Re: [Lazarus] Write to UNC or mapped drive
El 26/05/16 a las 08:22, Santiago A. escribió:
El 25/05/2016 a las 21:48, Marc Weustink escribió:
Correct. Drivemappings are user specific. You get the same if you want
to run something as administrator from a mapping.
More than user specific are desktop session specific.
Depends on windows version, iirc on modern versions local system (or was it
local service) it has no network access
Marc
I think there is a user named "NetworkService", that at least has access
to network. Obviously, it has to open the session on the remote resource.
--
Saluds
Santiago A.
s...@ciberpiula.net
Thanks to all. The solution was to impersonate the user, then create the
mapped drive by code (using the NetUseAdd function, see below), write
the files to the destination drive, then NetUseDelete:
function Impersonate(const User, PW: string): Boolean;
var
LogonType : Integer;
LogonProvider : Integer;
TokenHandle : THandle;
strAdminUser : string;
strAdminDomain: string;
strAdminPassword : string;
begin
LogonType := LOGON32_LOGON_INTERACTIVE;
LogonProvider := LOGON32_PROVIDER_DEFAULT;
strAdminUser := USER;
strAdminDomain := '';
strAdminPassword := PW;
Result := LogonUser(PChar(strAdminUser), nil,
PChar(strAdminPassword), LogonType, LogonProvider, TokenHandle);
if Result then
begin
Result := ImpersonateLoggedOnUser(TokenHandle);
end;
end;
function NetUseAdd(const LocalName, RemoteName, UserName, Password:
string; var AccessName: string): DWord;
var
netResource: TNetResource;
dwResult, dwBufSize, dwFlags: DWORD;
hRes: DWORD;
buf: array[0..1024] of Char;
begin
dwFlags := CONNECT_REDIRECT;
ZeroMemory(@netResource, sizeof(TNetResource));
with netResource do begin
dwType := RESOURCETYPE_DISK;
lpLocalName := PAnsiChar(LocalName);
lpRemoteName := PAnsiChar(RemoteName);
lpProvider := nil;
end;
dwBufSize := Sizeof(buf);
result := WNetUseConnection(0, netResource, PAnsiChar(Password),
PAnsiChar(UserName), dwFlags, buf, dwBufSize, dwResult);
if hRes = NO_ERROR then
AccessName := buf;
end;
function NetUseDelete(const LocalName: string): Boolean;
var
hRes: DWORD;
begin
hRes := WNetCancelConnection2(PChar(LocalName),
CONNECT_UPDATE_PROFILE, true);
result := (hres = NO_ERROR);
end;
To use these:
var
lAccess: string;
begin
if Impersonate('user', 'pass') then
begin
NetUseAdd('X:', '\\server\directory', 'remoteuser', 'remotepass',
lAccess);
// write files to X:\
NetUseDelete('X:');
end;
end;
Regards,
--
Leonardo M. Ramé
Medical IT - Griensu S.A.
Av. Colón 636 - Piso 8 Of. A
X5000EPT -- Córdoba
Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19
Cel.: +54 9 (011) 40871877
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[Lazarus] Write to UNC or mapped drive
Hi, My app is a CGI running on Windows2012 (IIS 7.0), it needs to save a file to a remote UNC or Mapped drive, but when I check using DirectoryExists in both cases I get False, but of course the UNC and mapped drive exists. Any hint?. Regards, -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] test
-- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] fcl-web or BrookFramework queryfields array
El 15/04/16 a las 16:33, silvioprog escribió: On Fri, Apr 15, 2016 at 4:25 PM, Leonardo M. Ramé <l.r...@griensu.com <mailto:l.r...@griensu.com>> wrote: [...] It works pefectly por param=value&..., but I don't know how to parse array type values. example: ?filters[0]['filter']=name[0]['value']=john This filter can be easily parser if you send it as: ?filters[0].filter=name[0].value=john The parser can populate a class structure like: === code === TYourObject = class published property filter: string ...; property value: string ...; end; TFilters = class(TFPGMapObject) end; === /code === Sorry, nevermind. I've found a way to configure KendoUi Grid to send queries as POST using JSON, so, problem solved. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] fcl-web or BrookFramework queryfields array
El 15/04/16 a las 16:22, Michael Van Canneyt escribió: On Fri, 15 Apr 2016, Leonardo M. Ramé wrote: Hi, I need to extract the field values of a GET query of type: http://127.0.0.1/cgi-bin/test.cgi?fields[1]=f1value[2]=f2value Is there a way to handle this apart from HttpRequest.QueryFields? What other way would you like ? What is not good about this way ? Michael. It works pefectly por param=value&..., but I don't know how to parse array type values. example: ?filters[0]['filter']=name[0]['value']=john Regards, -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] fcl-web or BrookFramework queryfields array
Hi, I need to extract the field values of a GET query of type: http://127.0.0.1/cgi-bin/test.cgi?fields[1]=f1value[2]=f2value Is there a way to handle this apart from HttpRequest.QueryFields? Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Raspberry Pi 3 Now Available
El 29/02/16 a las 12:48, Dennis escribió: The speed of hardware improvement is so impressive and at the same time so scary. For those of us who have spent so much time optimizing the software so as to run smoothly on earlier primitive hardware, our effect seems so obsolete and silly from hindsight. Dennis Anthony Walter wrote: This is just a heads up to Lazrus/FPC users who are interested in the Raspberry Pi. Raspberry Pi is now available. New features include integrated wireless bluetooth, and a quad-core 64-bit ARM Cortex A53 clocked at 1.2 GHz. https://www.raspberrypi.org/blog/raspberry-pi-3-on-sale Does anyone know if this version includes a Gigabit nic? or allows USB 3 (to let ethernet-usb conversion) ?. I've read version 2 had slow network transfer because of only allowing USB2. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Lazarus on my ancient computer?
El 14/02/16 a las 11:34, Mark Morgan Lloyd escribió: Sven Barth wrote: On 14.02.2016 15:14, Bart wrote: Hi, This is a bit off-topic. I have an ancient computer: Intel Celeron 700Mhz, 512MB RAM, 20GB IDE HD. (http://flyingsheep.nl/computer_nostalgie.htm#celeron700) (Hardware upgrades are not in the picture.) [snip] So, do you have tips on which Linux flavour to install on this machine? I'd suggest ArchLinux. It's a very lightweight distro that's based on a rolling release (like Gentoo), but uses binary packages instead. I use it on my two main computers. On one I'm only using Awesome as window manager and on the other OpenBox. Nothing else. Alternatively, I run Debian "Lenny" with KDE on a number of machines of that sort of spec. For later Debians consider XFCE irrespective of system spec. +1 I run XUbuntu, that comes with XFCE instead of Unity and runs pretty well on low end PCs.. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TOracleConnector connect as SYSDBA
El 19/01/16 a las 15:55, Leonardo M. Ramé escribió: Hi, does anyone know how to connect to Oracle as SYSDBA?, I'm getting "ORA-01017: invalid username/password; logon denied" when I set these params: Hostname: 127.0.0.1 Database: MYDB User: sys as SYSDBA Pass: MYPASSWORD Role: SYSDBA (this field is not taken into account -apparently-) If, instead of using "sys as SYSDBA" I use "sys" alone, I get "ORA-28009: connection as SYS should be as SYSDBA or SYSOPER". I've found a solution, instead of using "sys as SYSDBA" I used the username "system", and leave Role empty. Leonardo. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TOracleConnector connect as SYSDBA
Hi, does anyone know how to connect to Oracle as SYSDBA?, I'm getting "ORA-01017: invalid username/password; logon denied" when I set these params: Hostname: 127.0.0.1 Database: MYDB User: sys as SYSDBA Pass: MYPASSWORD Role: SYSDBA (this field is not taken into account -apparently-) If, instead of using "sys as SYSDBA" I use "sys" alone, I get "ORA-28009: connection as SYS should be as SYSDBA or SYSOPER". Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Different behavior of method and class variables
Please, forget about this. I was using a header for a different version of the dll. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Different behavior of method and class variables
I'm creating a class out of a C header converted to pascal using h2pas. I created this type: pRobotArray = ^TArray0toMAX_ROBOT_DRIVES1OfHANDLE; If I use it inside a method, like this: procedure TMyClass.myMethod; var lRobots: pRobotArray; begin getRobots(lHRobots); lRobots := @lHRobots; // this works ok. end; If I add an FRobots var to my class: TRobotClass = class private FRobots: pRobotArray; public procedure myMethod; end; procedure TMyClass.myMethod; begin getRobots(lHRobots); FRobots := @lHRobots; // I get an external SIGSEGV. end; Why the difference?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Codetools and specialize
El 16/11/15 a las 09:18, Mattias Gaertner escribió: On Mon, 16 Nov 2015 08:16:18 -0300 Leonardo M. Ramé <l.r...@griensu.com> wrote: Hi, I'm trying to implement a method of an specialized class, but when I type ctrl+space the IDE shows "Error: Identifier not found: specialize". But I can compile this project without problems. The definition of my class is this: TActListStudies = class(specialize TBaseGAction) public procedure Post; override; end; Codetools do not yet support anonymous specialization. See bug report: http://bugs.freepascal.org/view.php?id=27895 Can you use below instead? TBaseGActionDummy = specialize TBaseGAction; TActListStudies = class(TBaseGActionDummy) public procedure Post; override; end; Hmm, when I change that, the same error is raised, this time in the definition of TBaseGAction: generic TBaseGAction = class(specialize TBrookGAction) ... -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Codetools and specialize
Hi, I'm trying to implement a method of an specialized class, but when I
type ctrl+space the IDE shows "Error: Identifier not found: specialize".
But I can compile this project without problems.
The definition of my class is this:
TActListStudies = class(specialize TBaseGAction)
public
procedure Post; override;
end;
And the implementation:
procedure TActListStudies.Post;
begin
// here CTRL+SPACE raises the error.
Write('Your content here ...');
end;
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
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[Lazarus] File is locked?
Hi, I'm checking the contents of an .ini file every 10 seconds (with a TTimer), the file is modified by another application and I display its contents in my program. The problem is the file is locked while the other program is using it and aparently TIniFile cannot handle this situation, thus raising an "Unable to open file" error. How can I check if the file is locked before reading its contents?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TextHint, TextHintFontColor, TextHintFontStyle
El 08/11/15 a las 11:08, Bart escribió: On 11/8/15, Leonardo M. Ramé <l.r...@griensu.com> wrote: Hi, I noted there are new (to me) properties in some components, what's the difference between those and the good old Hint property?. TextHint fills the TCustomEdit with the value assigned to it, whenever the control's Text property is empty and the control does not have focus. Hint only (and alwaysif showhint = true) displays a bloontip when the mouse is over the control. Just play with it: Edit1.TextHint := 'Type your name here'; Bart Thanks Bart, it's the same as Bootstrap's placeholder property. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TextHint, TextHintFontColor, TextHintFontStyle
Hi, I noted there are new (to me) properties in some components, what's the difference between those and the good old Hint property?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] External SIGSEGV (random) when assigning TBookmark
El 03/11/15 a las 04:40, Michael Van Canneyt escribió: On Mon, 2 Nov 2015, Leonardo M. Ramé wrote: El 01/11/15 a las 09:25, Leonardo M. Ramé escribió: Hi, I don't use data aware controls too often, but as I'm updating a legacy application I have to use them. ... I finally solved this by getting the value of a primary key, then after TSQLQuery.refresh I do a locate for that key, works like a charm. What I don't get is what's the purpouse of TBookmark, I thought it was made for solving the problem I had. Bookmarks are only valid until the dataset closes. I will add this to the documentation. Michael. Ok, but apart from Closing/Opening or Refresh, is there any other way to reload a dataset without closing it? TSqlQuery.Refresh also loses the Bookmark. Regards, Leonardo. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] External SIGSEGV (random) when assigning TBookmark
El 01/11/15 a las 09:25, Leonardo M. Ramé escribió: Hi, I don't use data aware controls too often, but as I'm updating a legacy application I have to use them. ... I finally solved this by getting the value of a primary key, then after TSQLQuery.refresh I do a locate for that key, works like a charm. What I don't get is what's the purpouse of TBookmark, I thought it was made for solving the problem I had. Leonardo. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] External SIGSEGV (random) when assigning TBookmark
Hi, I don't use data aware controls too often, but as I'm updating a legacy application I have to use them. Please take a look at this code. DataModule1.SQLQuery1 is a simple "select * from customers limit 10". What I want to accomplish is the refreshing of a DBGrid *without losing the focused row*, that's why I use a TBookmark. To me, the code looks correct, but I'm getting a SIGSEGV while assigning the bookmark. I must add the error only happens the 2nd or 3rd time this method is called: var lOldStatus: string; lBookmark : TBookmark; begin lOldStatus := StatusBar1.Panels[1].Text; StatusBar1.Panels[1].Text := 'Updating...'; lBookmark := DataModule1.SQLQuery1.Bookmark; DataModule1.SQLQuery1.DisableControls; DataModule1.SQLQuery1.Close; DataModule1.SQLQuery1.Open; DataModule1.SQLQuery1.EnableControls; DataModule1.SQLQuery1.Bookmark := lBookmark; <-- Random SIGSEGV StatusBar1.Panels[1].Text := lOldStatus; end; -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Printing on Raspberry Pi
El 29/10/15 a las 12:24, Koenraad Lelong escribió: Hi, I'm trying to print a lazreport on a Raspberry Pi2. It's not working, I get : Bus Error or misaligned data access Press OK to ignore ... Pressing OK does nothing. Any suggestions to solve this ? I also tried the example from http://wiki.lazarus.freepascal.org/Using_the_printer. On my x86 linux-machine this works, on the RPi, nothing happens. Koenraad. Hi Koenraad, can you print using the RPi from other applications?. Regards, Leonardo. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Theoretical question about future of Lazarus
El 12/10/15 a las 09:03, JuuS escribió: Hi, Lazarus has had the number schemes 0.xxx to now of 1.4.xx Before falling asleep it passed through my mind about a lazarus 2.xx and... ...I thought what could it be? Lazarus is already so good and so feature filled that I struggled to understand what could possibly be in or justify a Lazarus 2.xx Any thoughts from anyone what a Laz 2 would be? Julius An api for command line .lpi handling, I user "lazbuild -B myproject.lpi" for command line compiling, and I wonder if there's something similar for project creation, package inclusion, etc. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PostgreSql: unexpected EOF on client connection with an open transaction
Do you have a second transaction object (e.g. default transaction) ? If so, that's probably it. Michael. No, just a TSQLTransaction attached to the TPQConnection object. I commented all my code but the PQConnection1.Connected := True, and I noted I get the "could not receive data from client: Connection reset by peer" message just after the CGI program ends its execution. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PostgreSql: unexpected EOF on client connection with an open transaction
El 02/09/15 a las 16:11, Leonardo M. Ramé escribió: El 02/09/15 a las 16:00, Michael Van Canneyt escribió: Well, that is why I asked how it is closed. Maybe it was closed a different way in your CGI, without properly closing it. The strange thing is that it reports an active transaction. Do you open a dataset ? If so, try setting Unidirectional:=True before opening it. (this avoids extra queries to fetch unique key data etc.) No, the error is raised even when I only have a TDataModule with a PQConnection.Connect on it's onCreate event. I'll ask Silvio, because I'm using Brook Framework, and maybe the way TBrookApp is handling creation/drestruction of TDatamodule is different than with TApplication, and it seems that onDestroy is not called. I think I found a bug in Brook. My .lpr now has this: begin BrookApp.CreateForm(TDataModule1, DataModule1); BrookApp.Run; DataModule1.Free; // this fixes the issue. end. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PostgreSql: unexpected EOF on client connection with an open transaction
El 02/09/15 a las 15:09, Michael Van Canneyt escribió: On Wed, 2 Sep 2015, Leonardo M. Ramé wrote: Do you have a second transaction object (e.g. default transaction) ? If so, that's probably it. Michael. Yes, I added an onDestroy event to the datamodule containing the PQConnection object and called PQConnection.Close(), but the efect is the same. BTW, the onCreate event is who calls PQConnection.Connect := True. There must be a problem in the CGI, because I created a desktop app with just a PQConnection, SQLTransaction and SQLQuery and the message isn't logged on the server's log. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PostgreSql: unexpected EOF on client connection with an open transaction
El 02/09/15 a las 16:00, Michael Van Canneyt escribió: Well, that is why I asked how it is closed. Maybe it was closed a different way in your CGI, without properly closing it. The strange thing is that it reports an active transaction. Do you open a dataset ? If so, try setting Unidirectional:=True before opening it. (this avoids extra queries to fetch unique key data etc.) No, the error is raised even when I only have a TDataModule with a PQConnection.Connect on it's onCreate event. I'll ask Silvio, because I'm using Brook Framework, and maybe the way TBrookApp is handling creation/drestruction of TDatamodule is different than with TApplication, and it seems that onDestroy is not called. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] PostgreSql: unexpected EOF on client connection with an open transaction
El 02/09/15 a las 10:28, Marc Santhoff escribió: Only guessing: maybe the transaction object is set to "autocommit" and the .Commit statement produces the error? It's configured to caRollBack. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] PostgreSql: unexpected EOF on client connection with an open transaction
Hi, this is kind of a dejavu, I'm pretty sure I have asked this question before, but I can't find the old message, so, here I go. In my postgresql.log file I get this two messages every time I query/update the database: could not receive data from client: Connection reset by peer unexpected EOF on client connection with an open transaction I'm using TPQConnection/TSqlTransaction/TSqlQuery in a CGI with this method: procedure TDataModule1.ExecSql(ASql: string); var lSql: TSQLQuery; begin lSql := TSQLQuery.Create(nil); try lSql.DataBase := PQConnection1; lSql.Transaction := SQLTransaction1; lSql.SQL.Text:= ASql; lSql.ExecSQL; SQLTransaction1.Commit; finally lSql.Free; end; end; The query is executed without issues, data is stored into the db, but I keep getting those messages. I'm using FPC 3.1.1 - Lazarus 1.5 - Linux 64bits (Ubuntu 15.04). Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Protocol Buffers
On 25/07/15 06:31, Michael Van Canneyt wrote: On Fri, 24 Jul 2015, Leonardo M. Ramé wrote: Hi, does anyone know if there's a FreePascal implementation of Protocol Buffers, it seems to fit perfectly in on use case I'm working on: https://developers.google.com/protocol-buffers/ Yes, there are several. See e.g. fundamentals. http://fundementals.sourceforge.net/ Michael. Nice!, I didn't know about this library. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Protocol Buffers
On 25/07/15 08:17, Aradeonas wrote:
Leonardo can you explain where you can use it?
Regards,
Ara
Currently one of my apps is sending JSON files to a server, with a
structure similar to this:
{
document_name: doc 1,
document_type: pdf,
content: BASE64_ENCODED_PDF
}
Where BASE64_ENCODED_PDF is an binary file that must be converted to
base64 to be included into a json field.
The base64 encoding/decoding carries both processor and transfer size
overhead, compared to a binary protocol.
Of course I could have created my own proprietary protocol, but I have
some constraints, for example, the sender is a Java application, and the
receiver is a FreePascal one, so, using a standard protocol, like
Google's Protocol Buffers seems to fit very well in this particular
scenario.
Regards,
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
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[Lazarus] Protocol Buffers
Hi, does anyone know if there's a FreePascal implementation of Protocol Buffers, it seems to fit perfectly in on use case I'm working on: https://developers.google.com/protocol-buffers/ Regards, -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Base64 broken in json?
El 02/06/15 a las 09:21, Michael Van Canneyt escibió: On Tue, 2 Jun 2015, Leonardo M. Ramé wrote: You cannot copypaste that, because there may be escaped characters in it. If you are doing that, you are doing it wrong. Hmm. That's the problem, then. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Base64 broken in json?
El 02/06/15 a las 04:20, Michael Van Canneyt escibió:
On Mon, 1 Jun 2015, Leonardo M. Ramé wrote:
El 30/05/15 a las 13:29, silvioprog escibió:
On Sat, May 30, 2015 at 12:14 PM, Leonardo M. Ramé l.r...@griensu.com
mailto:l.r...@griensu.com wrote:
[Window Title]
project1
[Content]
{ var1 : bGVvbmFyZG8= } - leonardo
[OK]
But after take a look at your code, it seems better to use as:
myString := '{ var1: ' + StringToJsonString(Base64EncodedString) +
' }'
Because function StringToJsonString will encode string in a
JSON-escape string.
Hi Silvio, can you try encoding the attached file, then output using
both methods?.
I tested your file with the following program:
program jsonb;
uses sysutils, classes, fpjson, jsonparser, base64;
Var
O : TJSONObject;
F : TFileStream;
S : TStringStream;
begin
S:=Nil;
O:=Nil;
try
F:=TFileStream.Create(ParamStr(1),fmOpenRead);
S:=TStringStream.Create('');
With TBase64EncodingStream.Create(S) do
try
CopyFrom(F,0);
Flush;
O:=TJSONObject.Create(['file',S.DataString]);
finally
Free;
end;
FreeAndNil(S);
S:=TStringStream.Create(O.Get('file'));
S.Position:=0;
FreeAndNil(F);
F:=TFileStream.Create(ChangeFileExt(paramstr(1),'.base64'),fmCreate);
F.CopyFrom(S,0);
finally
O.Free;
F.Free;
S.Free;
end;
end.
cadwal: ./jsonb plantilla-original.ott
cadwal: base64 -d plantilla-original.base64 b.ott
cadwal: ls *.ott -l
-rw-rw-r-- 1 michael michael 41956 Jun 2 09:16 b.ott
-rw-rw-r-- 1 michael michael 41956 Jun 2 09:05 plantilla-original.ott
cadwal: cmp b.ott plantilla-original.ott
cmp reports all is well.
Michael.
Thanks Michael, what if you save the json object to file using:
with TStringList.Create do
begin
Text := O.AsJson;
SaveToFile('test.json');
end;
Then copy the content of the file variable, and save as test.base64?
and try base64 -d test.base64, this is what I tried to do and got errors
decoding.
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Re: [Lazarus] Base64 broken in json?
El 30/05/15 a las 13:29, silvioprog escibió:
On Sat, May 30, 2015 at 12:14 PM, Leonardo M. Ramé l.r...@griensu.com
mailto:l.r...@griensu.com wrote:
[Window Title]
project1
[Content]
{ var1 : bGVvbmFyZG8= } - leonardo
[OK]
But after take a look at your code, it seems better to use as:
myString := '{ var1: ' + StringToJsonString(Base64EncodedString) + ' }'
Because function StringToJsonString will encode string in a
JSON-escape string.
Hi Silvio, can you try encoding the attached file, then output using
both methods?.
Leonardo
plantilla-original.ott
Description: application/vnd.oasis.opendocument.text-template
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Re: [Lazarus] Base64 broken in json?
On 30/05/15 05:48, Michael Van Canneyt wrote:
On Fri, 29 May 2015, Leonardo M. Ramé wrote:
Hi, does anyone know if when adding a base64 encoded string to an
TJsonObject and calling AsJson method, the base64 is broken?
Normally not.
I did try to decode (with base64 -d command) and I'm getting errors
when trying to decode the base64 string contained in the json. Btw,
this is the 1nst time I get errors, the file encoded is about 1.5mb.
If you write the json with AsJSON to file and try to decode this file,
that will obviously not work.
You need to get the value of the member with the base64 using the
AsString method. The result of AsString should be decodable
I have used JSON with Base64 repeatedly and never had problems.
Michael.
Michael, obviously I decode the value of the member. Anyway, in this
particular case using AsJson the result is broken some way.
I just concatenated a string like:
myString := '{ var1: ' + Base64EncodedString + ' }';
And it worked perfectly, while doing:
myJson.Add('var1', Base64EncodedString);
and
myJson.AsJson results in errors while trying to decode var1.
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[Lazarus] Base64 broken in json?
Hi, does anyone know if when adding a base64 encoded string to an TJsonObject and calling AsJson method, the base64 is broken? I did try to decode (with base64 -d command) and I'm getting errors when trying to decode the base64 string contained in the json. Btw, this is the 1nst time I get errors, the file encoded is about 1.5mb. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Base64 broken in json?
El 29/05/15 a las 14:55, Leonardo M. Ramé escibió: Hi, does anyone know if when adding a base64 encoded string to an TJsonObject and calling AsJson method, the base64 is broken? I did try to decode (with base64 -d command) and I'm getting errors when trying to decode the base64 string contained in the json. Btw, this is the 1nst time I get errors, the file encoded is about 1.5mb. Is weird but returning a json composed by hand worked without issues. I'll make an example and post to Mantis. Leonardo. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Inserting enum type into Postgresql
El 15/05/15 a las 12:26, Michael Van Canneyt escibió:
On Fri, 15 May 2015, Leonardo M. Ramé wrote:
Hi, I need to insert a value into a custom type column in a PostgreSql
database.
The type was created using this:
create type doc_type as enum('pdf', 'rtf', 'html', 'doc', 'docx',
'xls', 'xlsx', 'txt');
To insert a field into a table with one column of that type, I use:
var
lQuery: TSqlQuery;
begin
...
lQuery.Sql.Text := 'insert into documents(document_name,
document_type) values(:name, :type)';
lQuery.ParamByName('type').AsString := 'txt';
...
I get Primary Error: column document_type is of type doc_type but
expression is of type text. How can I cast this?.
I would think
insert into documents(document_name, document_type) values(:name,
(:type)::doc_type )';
?
Michael.
Yes, that was the solution.
Leonardo.
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[Lazarus] Inserting enum type into Postgresql
Hi, I need to insert a value into a custom type column in a PostgreSql
database.
The type was created using this:
create type doc_type as enum('pdf', 'rtf', 'html', 'doc', 'docx', 'xls',
'xlsx', 'txt');
To insert a field into a table with one column of that type, I use:
var
lQuery: TSqlQuery;
begin
...
lQuery.Sql.Text := 'insert into documents(document_name,
document_type) values(:name, :type)';
lQuery.ParamByName('type').AsString := 'txt';
...
I get Primary Error: column document_type is of type doc_type but
expression is of type text. How can I cast this?.
Regards,
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http://leonardorame.blogspot.com
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Re: [Lazarus] Error: Duplicate identifier $ansistrrec18
El 28/04/15 a las 07:16, Leonardo M. Ramé escibió: Hi, I'm trying to build a CGI program using BrookFramework in FPC 3.1.1 and Lazarus compiled today but I'm getting this error: Error: Duplicate identifier $ansistrrec18 That identifier of course is not a variable, nor unit name, and it can't be found in any of the used files. Any hint?. BTW, the error happens in a method of a Generic Class defined this way: generic TBaseGActionT = class(specialize TBrookGActionT) ... end; Regards, Changed to the fixes_3_0 branch and everything compiled flawlessly. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Error: Duplicate identifier $ansistrrec18
Hi, I'm trying to build a CGI program using BrookFramework in FPC 3.1.1 and Lazarus compiled today but I'm getting this error: Error: Duplicate identifier $ansistrrec18 That identifier of course is not a variable, nor unit name, and it can't be found in any of the used files. Any hint?. BTW, the error happens in a method of a Generic Class defined this way: generic TBaseGActionT = class(specialize TBrookGActionT) ... end; Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Impressive web development
Nah, for web development leave me with Vim and I'll be happy. El 14/04/15 a las 17:32, Graeme Geldenhuys escibió: Hi, I just came across this on Google+ - probably the most impressive web app I've ever seen. It is called Codenvy and is a fully functional zero-configuration integrated development environment. http://ow.ly/LBJUa Are we going to see such a web based Lazarus IDE soon? ;-) It should help stop all those FPC Lazarus installation issue support emails. :) Regards, - Graeme - -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Cross Codebot surface drawing examples
El 21/03/15 a las 01:44, Anthony Walter escibió: Here is a brief overview of some of custom rendering which can be done with Cross Codebot graphics interfaces. A few videos are embedded in the page below: http://www.getlazarus.org/forums/viewtopic.php?f=18t=35p=150#p150 Here is a listing of the interfaces and their methods: http://www.getlazarus.org/videos/crossgraphics/ If you're interested in testing the Cross Codebot package let me know and I can provide user level account access to my private git server. Hi Anthony, looks nice!, congrats for the great work you are doing. BTW, please, include some introduction about Cross Codebot, some people (like me) doesn't know what it is. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Play video from memory
To embed mplayer into a window you must know its ID. Window IDs have a
relation with the WindowHandle, but that value must be somehow
translated to be understood by X11 (or Windows). I don't know how to
translate it :(.
For example, If I use Format('%x', [Self.WindowHandle]) I get the Hex
value BB5380, then, using the wininfo tool I can get the ID. Just run
xwininfo and click on the window you want to embed mplayer into.
In my example I got:
xwininfo: Window id: 0x2800048 BB5380
Absolute upper-left X: 662
Absolute upper-left Y: 270
Relative upper-left X: 1
Relative upper-left Y: 24
Width: 320
Height: 240
Depth: 24
Visual: 0x20
Visual Class: TrueColor
Border width: 0
Class: InputOutput
Colormap: 0x22 (installed)
Bit Gravity State: NorthWestGravity
Window Gravity State: NorthWestGravity
Backing Store State: NotUseful
Save Under State: no
Map State: IsViewable
Override Redirect State: no
Corners: +662+270 -1744+270 -1744-258 +662-258
-geometry 320x240+661+246
As you can see, the first line displays the same Hex number I get from
Lazarus, and 0x2800048, this is the value mplayer expects.
So, to embed a movie into a window, when you know the window Id, you
just launch mplayer using this options:
mplayer -wid 0x2800048 /home/leonardo/Imágenes/Fotos/2009/11/21/mvi_0260.avi
Please, if any you know how to translate BB5380 to 0x2800048 I'll be
glad to learn.
El 05/03/15 a las 18:51, Philippe Lévi escibió:
and you know how to tell MPLAYER to show the video in a specific window? (using
WINDOWS, and glutCreateWindow).
thanks
Philippe
De: Leonardo M. Ramé l.r...@griensu.com
Enviado: quinta-feira, 5 de março de 2015 17:44
Para: lazarus@lists.lazarus.freepascal.org
Assunto: Re: [Lazarus] Play video from memory
Yes, you can!.
1) Load your Video to a TStream (TMemoryStream for example).
2) Use TProcess to execute mplayer -, the - is the parameter.
3) Send your stream to the standard input of the process.
El 05/03/15 a las 16:45, aradeonas escibió:
Thank you Leonardo,
I saw it before but it doesn't seem there is a way to pass memory to it
or I couldn't find out how.
Do you know?
Regards,
Ara
On Thu, Mar 5, 2015, at 11:40 AM, Leonardo M. Ramé wrote:
It looks like MPlayer can do this:
http://www.mplayerhq.hu/DOCS/HTML/en/streaming.html
El 04/03/15 a las 13:29, aradeonas escibió:
Hi,
Any one know a library or way to buffer video file into memory and then
pass it to player?
Any simple player do the job but it should support a way to open file
from memory.
Regards,
Ara
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Re: [Lazarus] Play video from memory
It looks like MPlayer can do this: http://www.mplayerhq.hu/DOCS/HTML/en/streaming.html El 04/03/15 a las 13:29, aradeonas escibió: Hi, Any one know a library or way to buffer video file into memory and then pass it to player? Any simple player do the job but it should support a way to open file from memory. Regards, Ara -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Play video from memory
Yes, you can!. 1) Load your Video to a TStream (TMemoryStream for example). 2) Use TProcess to execute mplayer -, the - is the parameter. 3) Send your stream to the standard input of the process. El 05/03/15 a las 16:45, aradeonas escibió: Thank you Leonardo, I saw it before but it doesn't seem there is a way to pass memory to it or I couldn't find out how. Do you know? Regards, Ara On Thu, Mar 5, 2015, at 11:40 AM, Leonardo M. Ramé wrote: It looks like MPlayer can do this: http://www.mplayerhq.hu/DOCS/HTML/en/streaming.html El 04/03/15 a las 13:29, aradeonas escibió: Hi, Any one know a library or way to buffer video file into memory and then pass it to player? Any simple player do the job but it should support a way to open file from memory. Regards, Ara -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Missing (compatible) underlying dataset, can not open
Hi, I'm trying to execute this query, but I'm getting Missing (compatible) underlying dataset, can not open. lQuery.DataBase := PQConnection1; lQuery.ParseSQL:= false; lQuery.SQL.Text:= 'select json_agg(resultset) as json from(select 1) as resultset'; lQuery.Open; The query runs without problems in PostgreSql 9.3 both from pgAdmin and psql. Any hint?. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Missing (compatible) underlying dataset, can not open
El 27/11/14 a las 12:26, Michael Van Canneyt escibió: On Thu, 27 Nov 2014, Leonardo M. Ramé wrote: Hi, I'm trying to execute this query, but I'm getting Missing (compatible) underlying dataset, can not open. lQuery.DataBase := PQConnection1; lQuery.ParseSQL:= false; lQuery.SQL.Text:= 'select json_agg(resultset) as json from(select 1) as resultset'; lQuery.Open; The query runs without problems in PostgreSql 9.3 both from pgAdmin and psql. Any hint?. Yes: You are creating a result set with fields that are not recognized by SQLDB (json type). PQLib (on which pqconnection is based) also does not understand json result fields, it converts them to text. So, you must somehow typecast the result to string: Probably select json_agg(resultset)::text as myjson from(select 1) as resultset should work. Michael. Great Michael!, that worked. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] OT: Fast image viewer
Hi, I'm lookig for a fast-small JPEG/BMP image viewer with Zoom, Pan, and Print (if possible), to be launched from my application and passing a File param or better a Stream to be opened. Can anyone recommend such viewer?. I need it for Windows. Regards, -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] OT: Fast image viewer
El 05/11/14 a las 15:08, Frederic Da Vitoria escibió: 2014-11-05 13:24 GMT+01:00 Leonardo M. Ramé l.r...@griensu.com mailto:l.r...@griensu.com: Hi, I'm lookig for a fast-small JPEG/BMP image viewer with Zoom, Pan, and Print (if possible), to be launched from my application and passing a File param or better a Stream to be opened. Can anyone recommend such viewer?. I need it for Windows. Maybe JPEGView? http://sourceforge.net/projects/jpegview/ If you want something better in terms of usability: http://www.faststone.org/ , but definitely not as small as JPEGView -- Frederic Da Vitoria (davitof) Thanks Frederic, JPEGView looks great!. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart cannot zoom
El 21/10/14 a las 15:32, Werner Pamler escibió: You have added a ChartToolset and have assigned it to the chart. This deactivates the built-in toolset which is responsible for default zooming and panning. All you have to do is to add another ZoomDragTool to your toolset. To make it respond to dragging with the left mouse button set its Shift property to ssLeft, this is the standard behavior of the built-in zoom tool. If you need panning as well add a ZoomPanTool; by default, it becomes active with the right mouse button. But if you already use these Shift values in tools that are currently in your toolset, select something else, or add a key like ssCtrl, or ssShift (or both) - there are many possibilities. There are several tutorial which cover zooming in TAChart: * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Chart_Tools, * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_Function_Series * http://wiki.lazarus.freepascal.org/TAChart_Tutorial:_ColorMapSeries,_Zooming Thanks Werner, I'll take a look at it. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TAChart cannot zoom
Hi, I don't know what I did, but I no longer can zoom in / zoom out (by dragging the mouse pointer) my chart. If I draw 1000 data points, they all are drawn into the chart, but I only want to display part of that data, for example 100 points. Here's the definition of my TAChart object (extracted from the lfm), I hope this help: object HAChart: TChart Left = 0 Height = 206 Top = 302 Width = 582 AxisList = item Grid.Color = 2434341 TickColor = clSilver Alignment = calRight Group = 1 Marks.Format = '%0.2f' Marks.Range.Max = 50 Marks.Style = smsCustom Minors = Title.LabelFont.Orientation = 900 end item Grid.Color = clGray Grid.Visible = False Intervals.MaxLength = 100 Intervals.MinLength = 30 Alignment = calBottom Marks.LabelFont.Orientation = 750 Marks.Format = '%2:s' Marks.Source = ListChartSource1 Marks.Style = smsLabel Minors = end BackColor = clBlack ExpandPercentage = 5 Extent.UseYMin = True Foot.Brush.Color = clBtnFace Foot.Font.Color = clBlue Frame.Color = clMedGray Title.Brush.Color = clBtnFace Title.Font.Color = clBlue Title.Text.Strings = ( 'TAChart' ) Toolset = ChartToolset1 OnAfterDrawBackWall = CandleStickChartAfterDrawBackWall OnAfterPaint = CandleStickChartAfterPaint Align = alClient Color = clBlack ParentColor = False ParentShowHint = False OnMouseMove = CandleStickChartMouseMove end Regards, -- Leonardo M. Ramébr Medical IT - Griensu S.A.br Av. Colón 636 - Piso 8 Of. Abr X5000EPT -- Córdobabr Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19br Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TProcess.Input hangs
On 17/10/14 20:54, Andrew Haines wrote:
On 10/17/14 11:46, Leonardo M. Ramé wrote:
Hi, I'm using this code to convert WAV files to MP3 on the fly, using
lame. It was working great until today.
It looks like this code has problems with large files sent to stdin.
lProcess := TProcess.Create(nil);
lProcess.Executable := '/usr/bin/lame';
lProcess.Parameters.Add('-'); // stdin
lProcess.Parameters.Add('-'); // stdout
lProcess.Options := [poUsePipes];
lProcess.Execute;
lWav.LoadFromFile('/home/leonardo/16310.wav');
lWav.Position:= 0;
lWav.SaveToStream(lProcess.Input); // -- here hangs
lProcess.CloseInput;
I also tried using this:
repeat
lReadCount := lProcess.Input.Write(lWav.Memory^, 500);
if lReadCount 500 then
lReadCount := 0;
until lReadCount = 0;
But also hangs before lReadCount 500.
Any hint?
You are writing to stdin while the process is generating data to stdout.
If you don't empty stdout and stderr the process will hang.
There's lots of info here:
http://wiki.freepascal.org/Executing_External_Programs
You need something like
while lProcess.Running or (lProcess.StdOut.NumBytesAvailable 0) do
begin
while lProcess.StdOut.NumBytesAvailable 0 do
begin
lReadCount := lProcess.StdOut.Read(Buffer, SizeOf(Buffer);
if lReadCount 0 then
// do something with encoded data
end;
// also you need to keep lProcess.StdErr empty or it can hang if it
gets full.
while lProcess.StdErr.NumBytesAvailable 0 do
begin
lReadCount := lProcess.StdErr.Read(Buffer, SizeOf(Buffer);
if lReadCount 0 then
// do something with Stderr data
end;
// now write data to be encoded.
lReadCount := lWav.Read(Buffer, SizeOf(Buffer));
lProcess.Input.Write(Buffer, lReadCount);
end;
Regards,
Andrew Haines
Thanks Andrew!, that fixed the issue.
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[Lazarus] TProcess.Input hangs
Hi, I'm using this code to convert WAV files to MP3 on the fly, using
lame. It was working great until today.
It looks like this code has problems with large files sent to stdin.
lProcess := TProcess.Create(nil);
lProcess.Executable := '/usr/bin/lame';
lProcess.Parameters.Add('-'); // stdin
lProcess.Parameters.Add('-'); // stdout
lProcess.Options := [poUsePipes];
lProcess.Execute;
lWav.LoadFromFile('/home/leonardo/16310.wav');
lWav.Position:= 0;
lWav.SaveToStream(lProcess.Input); // -- here hangs
lProcess.CloseInput;
I also tried using this:
repeat
lReadCount := lProcess.Input.Write(lWav.Memory^, 500);
if lReadCount 500 then
lReadCount := 0;
until lReadCount = 0;
But also hangs before lReadCount 500.
Any hint?
--
Leonardo M. Ramé
Medical IT - Griensu S.A.
Av. Colón 636 - Piso 8 Of. A
X5000EPT -- Córdoba
Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19
Cel.: +54 9 (011) 40871877
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[Lazarus] Alt + tab IDE Windows
Hi, on GTK2, when I alt+tab from another app, I would like to bring to front all Lazarus windows, instead I hav to alt+tab several times until each window (editor, menu, Object Inspector, etc.) comes to front. Is it possible to link all lazarus windows in a way that when alt+tab they work as one app, instead of separated windows?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Alt + tab IDE Windows
El 26/09/14 a las 10:52, William Ferreira escibió: On IDE Options, try to enable 'Show single button in TaskBar'. Maybe could help... Yes, I tried that before asking, but sadly it does exactly the same. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Anchordocking
Hi, from time to time I check this bug request: http://mantis.freepascal.org/view.php?id=26646 and found a comment added by Juha Manninen saying it won't work with laptop and external monitor, because of negative position. I compiled the trunk version and tested again, on the right monitor it doesn't work, but as a workaround I found I can configure my docking layout on the left monitor, save it then close Lazarus. The next time I launch Lazarus it will open on the left monitor with my layout. A minor glitch is I only have to drag the window to the right monitor just after opening Lazarus. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Anchordocking
El 25/09/14 a las 11:12, Juha Manninen escibió: On Thursday, September 25, 2014, Leonardo M. Ramé l.r...@griensu.com mailto:l.r...@griensu.com wrote: Hi, from time to time I check this bug request: http://mantis.freepascal.org/__view.php?id=26646 http://mantis.freepascal.org/view.php?id=26646 and found a comment added by Juha Manninen saying it won't work with laptop and external monitor, because of negative position. In fact I only changed the summary based on _your_ own comment. I also marked it as duplicate to another issue as indicated in forum discussion. Personally I don't care about a docked IDE. I often want to have 2 editor windows, both from floor to ceiling, as high as possible. It would not be possible with docking. Earlier there were problems with many icons in task bar and then only one IDE window could be selected at a time. It has been fixed since a while and usability of the multi-window IDE is very good. Partly this is a question of fashion. Now docked IDEs are in fashion but maybe it will change again. Juha I also wouldn't care about docked windows if at least the ide could remember window position. Is it possible to save the window positions?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Anchordocking
El 25/09/14 a las 13:07, Juha Manninen escibió: On Thursday, September 25, 2014, Leonardo M. Ramé l.r...@griensu.com mailto:l.r...@griensu.com wrote: I also wouldn't care about docked windows if at least the ide could remember window position. Is it possible to save the window positions? It does remember the window positions. They are persistent, previous positions are restored when you start Lazarus IDE. Does it not work for you? Juha Great!, I didn't know that. Tested and it worked. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TAChart DataPointCrossHairTool
Hi, I'm playing with the DataPointCrossHairTool, and I would like to know if it's possible to display the horizontal line on cursor's position, instead as the default data point value. If mean, for example, my points are: 1: 10 2: 20 3: 30 When the mouse cursor is between 20 and 10, say 13 for example, the default behavior is displaying a line at 10 or 20, but what if I want to display the line just at 13?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart DataPointCrossHairTool
On 21/09/14 11:56, Werner Pamler wrote: Hi, I'm playing with the DataPointCrossHairTool, and I would like to know if it's possible to display the horizontal line on cursor's position, instead as the default data point value. Not 100% sure, but I believe that this tool always snaps to the data points. An alternative would be to add a constant line series to the chart and use a TDatapointDragTool to drag the line. Use the chart's MouseDown to show and the MouseUp to hide the line. The toolsdemo in TAChart's demo folder is an example of the basic idea (the green and purple dashed vertical lines). -- I kind of got what I need, based on Mouse.CursorPos and TAChart.ScreenToClient. Now, I need to convert the mouse pos to a relative value to the axis. In the AfterDrawBackWall event, to get current Y cursos position, I have: ASender.ScreenToClient(Mouse.CursorPos).Y Now, how can I convert that value to its relative to axis value. Please, take a look at the attached screenshot, in the bottom chart, you can see the cursor and an horizontal line, with its value at the rigth axis, in this case is a 64 (yellow bold) between 3.50 and 4.00, instead of 64 I want to display the correct value (approx. 3.95). -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart DataPointCrossHairTool
On 21/09/14 16:54, Werner Pamler wrote: To convert image coordinates (pixels within the chart rectangle which you, indeed, can obtain from the global mouse position converted to the local chart pixels) to graph coordinates you call the chart methods * XImageToGraph(x:Integer): Double for x coordinates, * YImageToGraph(y:Integer): Double for y coordinates, or * ImageToGraph(P:TPoint): TDoublePoint (for both). (or XGraphToImage() etc for the other direction). If you do not use axis transformations, then graph coordinates directly refer to the units of your data. If, on the other hand, axis transformations are involved (logarithmic axes, multiple axes etc) the values on the axes may be different from the graph units used in an internal coordinate system. In this case, you have to link the series to the axis (by means of the AxisIndexX and AxisIndexY properties) and call the GraphToAxis or AxisToGraph methods of the AxisTransformation which is obtained from the method GetTransform of the axis. In your example of y values the transformation chain would be mouse point yi -- graph coords by yg := Chart.YImageToGraph(yi) -- axis coords by ya := Chart.LeftAxis.GetTransform.GraphToAxis(yg). Here, ya refers to your input data, yi to the pixel data. But since you don't use transformations YImageToGraph is sufficient. Great!, here's a screenshot. Meanwhile I found a way to get the Y pixel value of a point, as you can see, the 19.60 with yellow background refers to the last point in my series, and is drawn exactly at the same position of the Close Y Point. For this I used GetYImgValue( Index of last point ) of the series. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Hint as text over TAChart
Hi, I want to display the value of the point below the mouse cursor as
text over the chart.
The way I'm trying to implement this is by first add a TChartToolSet and
DataPointHintTool, with an onHintPosition event handler to determine the
point value, for example:
procedure TForm1.ChartToolset1DataPointHintTool1HintPosition(
ATool: TDataPointHintTool; var APoint: TPoint);
begin
FmyHint := Format('O: %f, H: %f, L: %f, C: %f',
[FOHLCArray[ATool.PointIndex].open,
FOHLCArray[ATool.PointIndex].high,
FOHLCArray[ATool.PointIndex].low,
FOHLCArray[ATool.PointIndex].close]);
end;
This just set a value for a variable, in this case FMyHint. Then, to
draw the value over the chart, I use the onAfterPaint event of TAChart:
procedure TForm1.Chart1AfterPaint(ASender: TChart);
begin
Sender.Canvas.TextOut(10, 10, FmyHint);
end;
But this event is not called after DataPointHintToolPosition, but on
other events, such as Form.onResize.
One question is, is this the correct way to display text over a
TAChart?, I don't like to add a TLabel over the chart.
The second question, how can I force a call to TAChart.onAftertPaint?.
Regards,
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
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Re: [Lazarus] Hint as text over TAChart
On 20/09/14 17:08, Werner Pamler wrote:
Using the TDataPointHintTool is correct. It is just a little bit awkward
to use... In particular you are not picking the correct event.
Here's a step-by-step instruction. Code shown will be based on the
financial demo which I added to TAChart recently:
* Add a TChartToolset to the form
* Set the chart's Toolset property to the toolset added.
* Add a TDatapointHintTool.
* Set DistanceMode to cdmOnlyX - this means that only the x
coordinate of the mouse is evaluated to find the data point under
the mouse; otherwise you'd have to move the move correctly to x and
y. GrabRadius is the tolerance for point detection; you may want
to increase the value a bit.
* Add code to the OnHint event of the DatapointHintTool, this is the
code which generates the hint text. Adapt your code to the following
which works with the financial demo (note that the hint string may
contain line breaks!):
procedure TMainForm.ChartToolset1DataPointHintTool1Hint(ATool:
TDataPointHintTool;
const APoint: TPoint; var AHint: String);
var
ser: TOpenHighLowCloseSeries;
begin
ser := ATool.Series as TOpenHighLowCloseSeries;
AHint := Format('Date: %s'#13' Open: %.2f'#13' High: %.2f'#13'
Low: %.2f'#13' Close: %.2f', [
ser.ListSource[Atool.PointIndex]^.Text,// In
this example the date is not stored in x, but in the Text of the
data point
ser.ListSource[ATool.PointIndex]^.YList[0],
ser.ListSource[ATool.PointIndex]^.YList[2],
ser.ListSource[ATool.PointIndex]^.Y,
ser.ListSource[ATool.PointIndex]^.YList[1]
]);
end;
* When you compile the hints should work already. However, they are
not properly positioned. I'd prefer to move them above a data point
and center them horizontally to the data points. The OnHintPosition
event is responsible to determine the location of the upper/left
corner of the hint window.
procedure
TMainForm.ChartToolset1DataPointHintTool1HintPosition(ATool:
TDataPointHintTool;
var APoint: TPoint);
var
ser: TOpenHighLowCloseSeries;
x, y: Integer;
w, h: Integer;
r: TRect;
hintwnd : THintWindow;
s: String;
begin
{ Calculate screen coordinates of the high point }
ser := ATool.Series as TOpenHighLowCloseSeries;
x :=
FinancialChart.XGraphToImage(ser.ListSource[ATool.PointIndex]^.X);
y :=
FinancialChart.YGraphToImage(ser.ListSource[ATool.PointIndex]^.YList[2]);
// High value, i.e. max of data point
{ Calculate size of hint window }
// Get hint text - just call the event handler of OnHint
ChartToolset1DataPointHintTool1Hint(ATool, APoint, s);
// Calculation - borrowed from TATools
hintwnd := THintWindow.Create(nil);
try
r := hintwnd.CalcHintRect(FinancialChart.Width, s, nil);
w := r.Right - r.Left; // Hint width
h := r.Bottom - r.Top; // Hint height
finally
hintwnd.Free;
end;
// Center hint horizontally relative to data point
APoint.x := x - w div 2;
// Move hint 10 pixels above the High data point
APoint.y := y - h - 10;
// Hint coordinates are relative to screen
APoint := FinancialChart.ClientToScreen(APoint);
end;
Regarding your second question how to call OnAfterPaint: Just call it
like I call the OnHint event in above example.
Great, calling onAfterPaint did the trick. Btw, thanks for the example.
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
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[Lazarus] TAchart frame left and top values
I need to draw text just at the top left corner of a chart, is there a property to allow me to know the top, left (and of course right and bottom) points of the frame containing the chart?. I attached a screenshot showing what I'm looking for. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart CandleStick Chart
El 16/09/14 a las 16:09, Werner Pamler escibió: In r46244 the TOpenHighLowCloseSeries has a new property Mode: selection mOHLC does the standard painting as before while mChandleStick paints the candlesticks that you requested. Since your code was mostly a copy of existing code I decided to stick to the old series type, but just add the painting modes. There are also properties CandleStickUpBrush, CandleStickDownBrush and CandleStickLinePen to control painting of the up and down bars and the border and shadow line. I also added a little demo financial to the demo folder of the TAChart installation which demonstrates both modes. It would be nice if you could have a look if everything is fine - I'm not an expert in financial charts. I also fixed the bug which ignored the true minimum of the data - therefore, it is no longer necessary to calculate the minimum by yourself, just have a look at the code in the demo project. And, finally, I modified the AddXOHLC method such that it automatically initializes the size of the YCount of the chart source if the current size would not be enough. Great!, I'll take a look later today. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart CandleStick Chart
El 14/09/14 a las 11:46, Werner Pamler escibió: I'm not familiar with the multivalued series. But you chandlestick series looks much like the Box/Whisker series which is included in TAChart. Can you point out the difference? -- Mm, they look similar, but Box/Whisker, has a top and bottom horizontal lines and an horizontal line in the middle of the candle, maybe adding a couple of boolean properties like TopMark, BottomMark and MiddleMark to the Box/Whisker chart will let use it as a CandleStick chart. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart CandleStick Chart
El 15/09/14 a las 15:49, Werner Pamler escibió: The TopMark and BottomMark, as you call it, can be removed by setting WhiskerWidth to 0, and the MiddleMark disappears with MedianPen.Style set to psClear. The Up and Down colors can be set by some logics when adding data points (there's the color parameter in the Add method...). The intrinsic problem that Box/Whisker expects ordered y values, while the Candle obviously does not (open can be greater or smaller then close), could be overcome by pre-sorting the data which should also take account of the Up/Down colors. Well, in total, these are a few lines of code, but relatively straightforward. Nevertheless, maybe too much for less code-centered guys? Anyway, I'll try to add your contribution to a new CandleStick series. A few question before I begin: Your posting says that Candlestick plots do not have top and bottom marks, but the wikipedia reference that you gave does show them. What is true? What should be the default up and down colors? Thanks. I'm used to see CandleStick charts in many Stock Trading software, and I never saw thos top and bottom marks. Default UP can be clLime and Down clRed. P.S.: the next chart type is Heikin Ashi, a variation of CandleStick. -- Leonardo M. Ramé Medical IT - Griensu S.A. Av. Colón 636 - Piso 8 Of. A X5000EPT -- Córdoba Tel.: +54(351)4246924 +54(351)4247788 +54(351)4247979 int. 19 Cel.: +54 9 (011) 40871877 -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart Date Axis Remove Weekends
On 14/09/14 06:57, Werner Pamler wrote: Don't use the real date as x value. Instead, use a counter value that is incremented every time you add a value to the series. Don't add data if the DayOfWeek of their date is 6 (Friday) or 7 (Saturday). In the data you posted in your previous message the weekends are already messing, therefore you can simply use the line index I for the x coordinate of the data point. The problem left is the display of the axis labels. Your code in the other posting already adds a data label to each series point (last parameter of AddXOHLC shown). To activate it set the Style of the Chart.BottomAxis.Marks to smsLabel, and don't forget to link the ListSource of the series (that's where your AddXOHLC data go to) to the Source of the BottomAxis.Marks. However, the x labels will be quite crowded and overlapping. There are several ways to get rid of that: Use some logics in creating the data labels - for example, if you want labels only for Monday set the DateToStr(lDate) to the data label only if the DayOfWeek(lDate) is 2 (Monday), and use an empty string otherwise. Or you can play with the Intervals property of the BottomAxis to increase the distance of the labels, e.g. Intervals.MinLength=100, Intervals.MaxLength=200. Or you can rotate the label by 90 degrees (BottomAxis.Marks.LabelFont.Orientation = 900) Thanks! Werner, the chart is starting to look very good. Now, I need to define the range of left axis. By default it starts on 0 (bottom left) and ends in the highest value of my data. How can I change the starting value, to the minimum value of the data source?. Currently all the data poins are displayed at the top part of the chart, and from 0 to 70 is empty. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TAChart Date Axis Remove Weekends
On 14/09/14 08:35, Leonardo M. Ramé wrote: On 14/09/14 06:57, Werner Pamler wrote: Don't use the real date as x value. Instead, use a counter value that is incremented every time you add a value to the series. Don't add data if the DayOfWeek of their date is 6 (Friday) or 7 (Saturday). In the data you posted in your previous message the weekends are already messing, therefore you can simply use the line index I for the x coordinate of the data point. The problem left is the display of the axis labels. Your code in the other posting already adds a data label to each series point (last parameter of AddXOHLC shown). To activate it set the Style of the Chart.BottomAxis.Marks to smsLabel, and don't forget to link the ListSource of the series (that's where your AddXOHLC data go to) to the Source of the BottomAxis.Marks. However, the x labels will be quite crowded and overlapping. There are several ways to get rid of that: Use some logics in creating the data labels - for example, if you want labels only for Monday set the DateToStr(lDate) to the data label only if the DayOfWeek(lDate) is 2 (Monday), and use an empty string otherwise. Or you can play with the Intervals property of the BottomAxis to increase the distance of the labels, e.g. Intervals.MinLength=100, Intervals.MaxLength=200. Or you can rotate the label by 90 degrees (BottomAxis.Marks.LabelFont.Orientation = 900) Thanks! Werner, the chart is starting to look very good. Now, I need to define the range of left axis. By default it starts on 0 (bottom left) and ends in the highest value of my data. How can I change the starting value, to the minimum value of the data source?. Currently all the data poins are displayed at the top part of the chart, and from 0 to 70 is empty. Please forget about this, solved by setting Chart1.Extent.UseYMax and UseYMin. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] TAChart CandleStick Chart
Hi, I inherited TOpenHighLowCloseSeries to implement CandleStick Charts:
http://en.wikipedia.org/wiki/Candlestick_chart
I only implemented the Draw method, but it would be nice to have this
properties in the final version also:
CandleColor: fill color of default or UP candle.
DownCandleColor: fill color of down candle
By now I use LinePen.Color and DownLinePen.Color as color of brush (fill
of candle color) and the border is allways clBlack.
Can someone include it in TAMultiseries?
// interface
{ TCandleStickChart }
TCandleStickChart = class(TOpenHighLowCloseSeries)
public
procedure Draw(ADrawer: IChartDrawer); override;
end;
// implementation
procedure TCandleStickChart.Draw(ADrawer: IChartDrawer);
function MaybeRotate(AX, AY: Double): TPoint;
begin
if IsRotated then
Exchange(AX, AY);
Result := ParentChart.GraphToImage(DoublePoint(AX, AY));
end;
procedure DoLine(AX1, AY1, AX2, AY2: Double);
begin
ADrawer.Line(MaybeRotate(AX1, AY1), MaybeRotate(AX2, AY2));
end;
function GetGraphPointYIndex(AIndex, AYIndex: Integer): Double;
begin
if AYIndex = 0 then
Result := GetGraphPointY(AIndex)
else
Result := AxisToGraphY(Source[AIndex]^.YList[AYIndex - 1]);
end;
procedure DoRect(AX1, AY1, AX2, AY2: Double);
var
r: TRect;
begin
with ParentChart do begin
r.TopLeft := MaybeRotate(AX1, AY1);
r.BottomRight := MaybeRotate(AX2, AY2);
end;
ADrawer.FillRect(r.Left, r.Top, r.Right, r.Bottom);
ADrawer.Rectangle(r);
end;
var
my: Cardinal;
ext2: TDoubleRect;
i: Integer;
x, tw, yopen, yhigh, ylow, yclose: Double;
p: TPen;
begin
my := MaxIntValue([YIndexOpen, YIndexHigh, YIndexLow, YIndexClose]);
if IsEmpty or (my = Source.YCount) then exit;
ext2 := ParentChart.CurrentExtent;
ExpandRange(ext2.a.X, ext2.b.X, 1.0);
ExpandRange(ext2.a.Y, ext2.b.Y, 1.0);
PrepareGraphPoints(ext2, true);
for i := FLoBound to FUpBound do begin
x := GetGraphPointX(i);
yopen := GetGraphPointYIndex(i, YIndexOpen);
yhigh := GetGraphPointYIndex(i, YIndexHigh);
ylow := GetGraphPointYIndex(i, YIndexLow);
yclose := GetGraphPointYIndex(i, YIndexClose);
tw := GetXRange(x, i) * PERCENT * TickWidth;
if (DownLinePen.Color = clTAColor) or (yopen = yclose) then
p := LinePen
else
p := DownLinePen;
ADrawer.BrushColor:= P.Color;
// set border black
ADrawer.SetPenParams(p.Style, clBlack);
DoLine(x, yhigh, x, ylow);
DoRect(x - tw, yopen, x + tw, yclose);
end;
end;
I attached a screenshot of the result.
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
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[Lazarus] TAChart OHLC
Hi, I'm trying to create a basic Open High Low Close chart using
TAChart, but I'm getting a RunError(201) on tacustomsource.pas line
433, aparently YList is not initialized.
Here's the lfm:
object Form1: TForm1
Left = 364
Height = 354
Top = 255
Width = 582
Caption = 'Form1'
ClientHeight = 354
ClientWidth = 582
OnShow = FormShow
LCLVersion = '1.3'
object Chart1: TChart
Left = 0
Height = 354
Top = 0
Width = 582
AxisList =
item
Minors =
Title.LabelFont.Orientation = 900
end
item
Alignment = calBottom
Minors =
end
Foot.Brush.Color = clBtnFace
Foot.Font.Color = clBlue
Title.Brush.Color = clBtnFace
Title.Font.Color = clBlue
Title.Text.Strings = (
'TAChart'
)
Align = alClient
ParentColor = False
object Chart1OpenHighLowCloseSeries1: TOpenHighLowCloseSeries
end
end
end
And Here's the .pas
unit Unit1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, TAGraph, TASources, TAIntervalSources,
TAMultiSeries, Forms, Controls, Graphics, Dialogs,
StrUtils, DateUtils, TACustomSeries;
type
{ TForm1 }
TForm1 = class(TForm)
Chart1: TChart;
Chart1OpenHighLowCloseSeries1: TOpenHighLowCloseSeries;
procedure FormShow(Sender: TObject);
private
{ private declarations }
public
{ public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TForm1 }
procedure TForm1.FormShow(Sender: TObject);
var
lCSV: TStringList;
lLine: TStringList;
I: Integer;
lDate: TDate;
lOpen: double;
lHigh: double;
lLow: double;
lClose: double;
lStr: string;
begin
lCSV := TStringList.Create;
lLine := TStringList.Create;
DefaultFormatSettings.DateSeparator:='-';
DefaultFormatSettings.ShortDateFormat:='D-MMM-Y';
DefaultFormatSettings.ShortMonthNames[1] := 'Jan';
DefaultFormatSettings.ShortMonthNames[2] := 'Feb';
DefaultFormatSettings.ShortMonthNames[3] := 'Mar';
DefaultFormatSettings.ShortMonthNames[4] := 'Apr';
DefaultFormatSettings.ShortMonthNames[5] := 'May';
DefaultFormatSettings.ShortMonthNames[6] := 'Jun';
DefaultFormatSettings.ShortMonthNames[7] := 'Jul';
DefaultFormatSettings.ShortMonthNames[8] := 'Aug';
DefaultFormatSettings.ShortMonthNames[9] := 'Sep';
DefaultFormatSettings.ShortMonthNames[10] := 'Oct';
DefaultFormatSettings.ShortMonthNames[11] := 'Nov';
DefaultFormatSettings.ShortMonthNames[12] := 'Dec';
try
lCSV.LoadFromFile('aapl.csv');
for I := 0 to lCSV.Count - 1 do
begin
if I = 0 then
continue;
lLine.CommaText:= lCSV[I];
lDate := ScanDateTime('d-mmm-y', lLine[0]);
lOpen := StrToFloat(lLine[1]);
lHigh := StrToFloat(lLine[2]);
lLow := StrToFloat(lLine[3]);
lClose := StrToFloat(lLine[4]);
Chart1OpenHighLowCloseSeries1.AddXOHLC(I, lOpen, lHigh, lLow,
lClose, DateToStr(lDate));
end;
finally
lLine.Free;
lCSV.Free;
end;
end;
end.
Also I attached the file aapl.csv I'm using to feed the data.
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
Date,Open,High,Low,Close,Volume
10-Sep-14,98.01,101.11,97.76,101.00,100869587
9-Sep-14,99.08,103.08,96.14,97.99,189846255
8-Sep-14,99.30,99.31,98.05,98.36,46356742
5-Sep-14,98.80,99.39,98.31,98.97,58457035
4-Sep-14,98.85,100.09,97.79,98.12,85718221
3-Sep-14,103.10,103.20,98.58,98.94,125420521
2-Sep-14,103.06,103.74,102.72,103.30,53564262
29-Aug-14,102.86,102.90,102.20,102.50,44595247
28-Aug-14,102.13,102.78,101.56,102.25,68459801
27-Aug-14,101.02,102.57,100.70,102.13,52369011
26-Aug-14,101.42,101.50,100.86,100.89,33151984
25-Aug-14,101.79,102.17,101.28,101.54,40270173
22-Aug-14,100.29,101.47,100.19,101.32,44183834
21-Aug-14,100.57,100.94,100.11,100.58,33478198
20-Aug-14,100.44,101.09,99.95,100.57,52699192
19-Aug-14,99.41,100.68,99.32,100.53,69399270
18-Aug-14,98.49,99.37,97.98,99.16,47572413
15-Aug-14,97.90,98.19,96.86,97.98,48951331
14-Aug-14,97.33,97.57,96.80,97.50,28115566
13-Aug-14,96.15,97.24,96.04,97.24,31916439
12-Aug-14,96.04,96.88,95.61,95.97,33795352
11-Aug-14,95.27,96.08,94.84,95.99,36584844
8-Aug-14,94.26,94.82,93.28,94.74,41865193
7-Aug-14,94.93,95.95,94.10,94.48,46711179
6-Aug-14,94.75,95.48,94.71,94.96,38558342
5-Aug-14,95.36,95.68,94.36,95.12,55932663
4-Aug-14,96.37,96.58,95.17,95.59,39958144
1-Aug-14,94.90,96.62,94.81,96.13,48511286
31-Jul-14,97.16,97.45,95.33,95.60,56842647
30-Jul-14,98.44,98.70,97.67,98.15,33010001
29-Jul-14,99.33,99.44,98.25,98.38,43143095
28-Jul-14,97.82,99.24,97.55,99.02,55317689
25-Jul-14,96.85,97.84,96.64,97.67,43469117
24-Jul-14,97.04,97.32,96.42,97.03,45728843
23-Jul-14,95.42,97.88,95.17,97.19,92917719
22-Jul-14,94.68,94.89,94.12,94.72,55196597
21-Jul-14,94.99,95.00,93.72,93.94,39079002
18-Jul-14,93.62,94.74,93.02,94.43,49987593
17-Jul-14,95.03,95.28,92.57,93.09,57298243
16-Jul-14,96.97,97.10,94.74,94.78,53502415
15-Jul-14,96.80,96.85,95.03,95.32,45696176
14-Jul-14,95.86,96.89,95.65,96.45,42810155
11-Jul
[Lazarus] TAChart Date Axis Remove Weekends
Hi, I'm using TAChart to plot OHLC Stock prices and would like to ignore weekends. Is it possible to do that?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] StrToDate and DefaultFormatSettings
Hi, I need to convert strings with format d-mmm-y to TDateTime. For example: '12-Sep-14' Here's my code: DefaultFormatSettings.DateSeparator:='-'; DefaultFormatSettings.ShortDateFormat:='D-MMM-Y'; DefaultFormatSettings.ShortMonthNames[1] := 'Jan'; DefaultFormatSettings.ShortMonthNames[2] := 'Feb'; DefaultFormatSettings.ShortMonthNames[3] := 'Mar'; DefaultFormatSettings.ShortMonthNames[4] := 'Apr'; DefaultFormatSettings.ShortMonthNames[5] := 'May'; DefaultFormatSettings.ShortMonthNames[6] := 'Jun'; DefaultFormatSettings.ShortMonthNames[7] := 'Jul'; DefaultFormatSettings.ShortMonthNames[8] := 'Aug'; DefaultFormatSettings.ShortMonthNames[9] := 'Sep'; DefaultFormatSettings.ShortMonthNames[10] := 'Oct'; DefaultFormatSettings.ShortMonthNames[11] := 'Nov'; DefaultFormatSettings.ShortMonthNames[12] := 'Dec'; lStr := DateToStr(now); // This works Ok. lDate := StrToDate(lStr); // Here I get EConvert exception. Am I missing something?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Anchordocking on Lazarus 1.3
El 29/08/14 a las 06:36, Mattias Gaertner escibió: On Thu, 28 Aug 2014 14:45:36 -0300 Leonardo M. Ramé l.r...@griensu.com wrote: Hi, since a couple of months ago I noted Anchordocking is not working as expected. I can arrange a nice layout, and save it as my default layout, but when I start Lazarus again, it was commpletely messed up. Does anyone faced the same issue?. Do you use page docking? Mattias Re sent with a smaller image file. Sorry, what is page docking?. I attached a screenshot of how my Lazarus looks after arranging my layout, also the file anchordocklayout.xml after going to Tools - Save design... After closing Lazarus, the layout is completely messed up. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com ?xml version=1.0 encoding=UTF-8? CONFIG MainConfig Nodes ChildCount=1 Item1 Name=MainIDE Type=CustomSite Monitor=1 ChildCount=1 Bounds Left=1505 Top=48 Width=1044 Height=625 WorkArea Rect Left=1360 Top=25 Right=2726 Bottom=768/ /WorkArea /Bounds Item1 Name=AnchorDockSite4 Type=Layout ChildCount=7 Bounds Top=72 Width=1044 Height=532 SplitterPos=68/ Anchors Align=Bottom/ Item1 Name=SourceNotebook Type=Control Bounds Left=234 Width=527 Height=446/ Anchors Left=AnchorDockSplitter4 Right=AnchorDockSplitter3 Bottom=AnchorDockSplitter2/ Header Position=left/ /Item1 Item2 Name=AnchorDockSplitter2 Type=SplitterHorizontal Bounds Left=234 Top=446 Width=527 Height=4/ Anchors Left=AnchorDockSplitter4 Right=AnchorDockSplitter3/ /Item2 Item3 Name=MessagesView Type=Control Bounds Left=234 Top=450 Width=527 Height=82/ Anchors Left=AnchorDockSplitter4 Top=AnchorDockSplitter2 Right=AnchorDockSplitter3/ /Item3 Item4 Name=AnchorDockSplitter3 Type=SplitterVertical Bounds Left=761 Width=4 Height=532/ /Item4 Item5 Name=ProjectInspector Type=Control Bounds Left=765 Width=279 Height=532/ Anchors Left=AnchorDockSplitter3/ /Item5 Item6 Name=AnchorDockSplitter4 Type=SplitterVertical Bounds Left=230 Width=4 Height=532/ /Item6 Item7 Name=ObjectInspectorDlg Type=Control Bounds Width=230 Height=532/ Anchors Right=AnchorDockSplitter4/ /Item7 /Item1 /Item1 /Nodes /MainConfig Restores Count=1 Item1 Names=CodeExplorerView Nodes Name=MainIDE Type=CustomSite Monitor=1 ChildCount=1 Bounds Left=1461 Top=52 Width=1044 Height=555 WorkArea Rect Left=1360 Top=25 Right=2726 Bottom=768/ /WorkArea /Bounds Item1 Name=AnchorDockSite4 Type=Layout ChildCount=5 Bounds Top=72 Width=1044 Height=462 SplitterPos=68/ Anchors Align=Bottom/ Item1 Name=SourceNotebook Type=Control Bounds Width=795 Height=393/ Anchors Right=AnchorDockSplitter3 Bottom=AnchorDockSplitter2/ Header Position=left/ /Item1 Item2 Name=AnchorDockSplitter2 Type=SplitterHorizontal Bounds Top=393 Width=795 Height=4/ Anchors Right=AnchorDockSplitter3/ /Item2 Item3 Name=MessagesView Type=Control Bounds Top=397 Width=795 Height=65/ Anchors Top=AnchorDockSplitter2 Right=AnchorDockSplitter3/ /Item3 Item4 Name=AnchorDockSplitter3 Type=SplitterVertical Bounds Left=795 Width=4 Height=462/ /Item4 Item5 Name=CodeExplorerView Type=Control Bounds Left=799 Width=245 Height=462/ Anchors Left=AnchorDockSplitter3/ /Item5 /Item1 /Nodes /Item1 /Restores /CONFIG -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Anchordocking on Lazarus 1.3
El 29/08/14 a las 09:46, Mattias Gaertner escibió: On Fri, 29 Aug 2014 09:11:07 -0300 Leonardo M. Ramé l.r...@griensu.com wrote: El 29/08/14 a las 06:36, Mattias Gaertner escibió: On Thu, 28 Aug 2014 14:45:36 -0300 Leonardo M. Ramé l.r...@griensu.com wrote: Hi, since a couple of months ago I noted Anchordocking is not working as expected. I can arrange a nice layout, and save it as my default layout, but when I start Lazarus again, it was commpletely messed up. Does anyone faced the same issue?. Do you use page docking? Mattias Re sent with a smaller image file. Sorry, what is page docking?. I attached a screenshot of how my Lazarus looks after arranging my layout, also the file anchordocklayout.xml after going to Tools - Save design... After closing Lazarus, the layout is completely messed up. Thanks. Please create a bug report. Done: http://mantis.freepascal.org/view.php?id=26646 -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Anchordocking on Lazarus 1.3
Hi, since a couple of months ago I noted Anchordocking is not working as expected. I can arrange a nice layout, and save it as my default layout, but when I start Lazarus again, it was commpletely messed up. Does anyone faced the same issue?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Translating php://input into fcl-web
On 24/08/14 00:08, silvioprog wrote:
Oops,
On Sun, Aug 24, 2014 at 12:02 AM, silvioprog silviop...@gmail.com
mailto:silviop...@gmail.com wrote:
On Sat, Aug 23, 2014 at 9:07 PM, Leonardo M. Ramé
l.r...@griensu.com mailto:l.r...@griensu.com wrote:
[...]
Thank you very much Silvio for testing.
My setup is XUbuntu 14.04 64bits, and Apache/2.4.7 (Ubuntu).
Also I'm testing on Firefox 31 For Ubuntu with the latest
version of Flash Plugin.
What confuses me is the same setup, but instead of the CGI, if I
use PHP, the file is stored with the complete audio.
Worked on Ubuntu too, please try it online here:
_https://brookframework.org/leo/_
I used chmod 777 -R /var/www/html/leo/tmp/ to my CGI can write
waves into this directory.
The modified source code (i'm using jQuery in this demo to less
coding hehe):
http://tempsend.com/06FD41FF11
Please try online demo again. And in your code change this lines:
...
stopButton.on('click', function(e) {
e.preventDefault();
e.stopPropagation();
$(this).prop('disabled', true);
startButton.prop('disabled', false);
Wami.stopRecording();
setTimeout(function() {
downloadLink.removeClass('hidden');
}, 3000);
});
...
--
Silvio Clécio
My public projects - github.com/silvioprog http://github.com/silvioprog
Thanks, this works perfectly. I'm using the same browser, the same swf
but your Ubuntu server and your CGI example. Can you send me your
cgiproject1.bf (the compiled version) to check it in my PC?.
I deployed my example to an external Ubuntu 12.04 server, with the CGI
compiled in my machine, and the result is a file of correct size,
playable with mplayer but just about 1 second of audio then mute until
the playing ends, the same result as my local config.
I'm starting to think there must be something wrong in my fpc version...
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
--
___
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Re: [Lazarus] Translating php://input into fcl-web
On 24/08/14 07:31, Leonardo M. Ramé wrote:
On 24/08/14 00:08, silvioprog wrote:
Oops,
On Sun, Aug 24, 2014 at 12:02 AM, silvioprog silviop...@gmail.com
mailto:silviop...@gmail.com wrote:
On Sat, Aug 23, 2014 at 9:07 PM, Leonardo M. Ramé
l.r...@griensu.com mailto:l.r...@griensu.com wrote:
[...]
Thank you very much Silvio for testing.
My setup is XUbuntu 14.04 64bits, and Apache/2.4.7 (Ubuntu).
Also I'm testing on Firefox 31 For Ubuntu with the latest
version of Flash Plugin.
What confuses me is the same setup, but instead of the CGI, if I
use PHP, the file is stored with the complete audio.
Worked on Ubuntu too, please try it online here:
_https://brookframework.org/leo/_
I used chmod 777 -R /var/www/html/leo/tmp/ to my CGI can write
waves into this directory.
The modified source code (i'm using jQuery in this demo to less
coding hehe):
http://tempsend.com/06FD41FF11
Please try online demo again. And in your code change this lines:
...
stopButton.on('click', function(e) {
e.preventDefault();
e.stopPropagation();
$(this).prop('disabled', true);
startButton.prop('disabled', false);
Wami.stopRecording();
setTimeout(function() {
downloadLink.removeClass('hidden');
}, 3000);
});
...
--
Silvio Clécio
My public projects - github.com/silvioprog http://github.com/silvioprog
Thanks, this works perfectly. I'm using the same browser, the same swf
but your Ubuntu server and your CGI example. Can you send me your
cgiproject1.bf (the compiled version) to check it in my PC?.
I deployed my example to an external Ubuntu 12.04 server, with the CGI
compiled in my machine, and the result is a file of correct size,
playable with mplayer but just about 1 second of audio then mute until
the playing ends, the same result as my local config.
I'm starting to think there must be something wrong in my fpc version...
Confirmed!, I completely removed my fpc and Lazarus, then downloaded
from svn and rebuilded everything and it works now.
Thanks you Silvio again for your help.
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
--
___
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[Lazarus] Translating php://input into fcl-web
Hi, I'm trying to translate this PHP code to fcl-web (actually
brookframework):
?php
$content = file_get_contents('php://input');
$fh = fopen('output.wav', 'w') or die(can't open file);
fwrite($fh, $content);
fclose($fh);
?
The difficult part is the line with file_get_contents('php://input'),
it contains the whole POST content as binary.
What I already did was this:
procedure TActAudio.Post;
var
lWav: TMemoryStream;
begin
lWav := TMemoryStream.Create;
try
lWav.Write(HttpRequest.Content[1], HttpRequest.ContentLength);
lWav.Position:= 0;
lWav.SaveToFile('/tmp/output.wav');
finally
lWav.Free;
end;
end;
But the output.wav result is corrupt, while the php one is correct.
Any hint?.
Regards,
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
--
___
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Re: [Lazarus] Translating php://input into fcl-web
On 23/08/14 17:18, silvioprog wrote:
On Sat, Aug 23, 2014 at 3:12 PM, Leonardo M. Ramé l.r...@griensu.com
mailto:l.r...@griensu.com wrote:
Hi, I'm trying to translate this PHP code to fcl-web (actually
brookframework):
?php
$content = file_get_contents('php://__input');
$fh = fopen('output.wav', 'w') or die(can't open file);
fwrite($fh, $content);
fclose($fh);
?
The difficult part is the line with
file_get_contents('php://__input'), it contains the whole POST
content as binary.
What I already did was this:
procedure TActAudio.Post;
var
lWav: TMemoryStream;
begin
lWav := TMemoryStream.Create;
try
lWav.Write(HttpRequest.__Content[1], HttpRequest.ContentLength);
lWav.Position:= 0;
lWav.SaveToFile('/tmp/output.__wav');
finally
lWav.Free;
end;
end;
But the output.wav result is corrupt, while the php one is correct.
Any hint?.
Regards,
Worked fine here:
procedure TMyAction.Post;
begin
with TFileStream.Create('out.txt', fmCreate) do
try
Write(TheRequest.Content[1], TheRequest.ContentLength);
finally
Free;
end;
end;
POST /cgi1.br http://cgi1.br HTTP/1.1
{key1:value1,key2:value2}
out.txt:
{key1:value1,key2:value2}
Or:
procedure TMyAction.Post;
begin
with TMemoryStream.Create do
try
Write(TheRequest.Content[1], TheRequest.ContentLength);
SaveToFile('post.txt');
finally
Free;
end;
end;
P.S.: php://input is not available with enctype=multipart/form-data.
Yes, with plain text everything works ok, the problem raises when I try
to receive binary data, in this case a WAV file, enctype: audio/x-wav.
The client (a Flash app running on the browser) is sending a POST
message without params, just the binary data.
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
--
___
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Lazarus@lists.lazarus.freepascal.org
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Re: [Lazarus] Translating php://input into fcl-web
On 23/08/14 18:40, Leonardo M. Ramé wrote:
On 23/08/14 17:18, silvioprog wrote:
On Sat, Aug 23, 2014 at 3:12 PM, Leonardo M. Ramé l.r...@griensu.com
mailto:l.r...@griensu.com wrote:
Hi, I'm trying to translate this PHP code to fcl-web (actually
brookframework):
?php
$content = file_get_contents('php://__input');
$fh = fopen('output.wav', 'w') or die(can't open file);
fwrite($fh, $content);
fclose($fh);
?
The difficult part is the line with
file_get_contents('php://__input'), it contains the whole POST
content as binary.
What I already did was this:
procedure TActAudio.Post;
var
lWav: TMemoryStream;
begin
lWav := TMemoryStream.Create;
try
lWav.Write(HttpRequest.__Content[1],
HttpRequest.ContentLength);
lWav.Position:= 0;
lWav.SaveToFile('/tmp/output.__wav');
finally
lWav.Free;
end;
end;
But the output.wav result is corrupt, while the php one is correct.
Any hint?.
Regards,
Worked fine here:
procedure TMyAction.Post;
begin
with TFileStream.Create('out.txt', fmCreate) do
try
Write(TheRequest.Content[1], TheRequest.ContentLength);
finally
Free;
end;
end;
POST /cgi1.br http://cgi1.br HTTP/1.1
{key1:value1,key2:value2}
out.txt:
{key1:value1,key2:value2}
Or:
procedure TMyAction.Post;
begin
with TMemoryStream.Create do
try
Write(TheRequest.Content[1], TheRequest.ContentLength);
SaveToFile('post.txt');
finally
Free;
end;
end;
P.S.: php://input is not available with enctype=multipart/form-data.
Yes, with plain text everything works ok, the problem raises when I
try to receive binary data, in this case a WAV file, enctype:
audio/x-wav.
The client (a Flash app running on the browser) is sending a POST
message without params, just the binary data.
I made an example using fcl-web (without Brook) and the problem persists.
I attached an example for anyone to test, please, copy the following
files to your apache documents folder (/var/www/html on Ubuntu):
testwami.html
swfobject.js
wamirecorder.js
Also please download the file Wami.sfw from here:
https://wami-recorder.googlecode.com/hg/example/client/Wami.swf and copy
to the same folder as the previous files. I cannot attach it here
because of email size restrictions of the mailing list.
Also please compile the project cgiproject.lpi contained in wami.tar.gz,
then copy the executable to your /cgi-bin/ directory.
Regards,
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
wami.tar.gz
Description: application/gzip
--
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Re: [Lazarus] Translating php://input into fcl-web
On 23/08/14 18:40, Leonardo M. Ramé wrote:
On 23/08/14 17:18, silvioprog wrote:
On Sat, Aug 23, 2014 at 3:12 PM, Leonardo M. Ramé l.r...@griensu.com
mailto:l.r...@griensu.com wrote:
Hi, I'm trying to translate this PHP code to fcl-web (actually
brookframework):
?php
$content = file_get_contents('php://__input');
$fh = fopen('output.wav', 'w') or die(can't open file);
fwrite($fh, $content);
fclose($fh);
?
The difficult part is the line with
file_get_contents('php://__input'), it contains the whole POST
content as binary.
What I already did was this:
procedure TActAudio.Post;
var
lWav: TMemoryStream;
begin
lWav := TMemoryStream.Create;
try
lWav.Write(HttpRequest.__Content[1],
HttpRequest.ContentLength);
lWav.Position:= 0;
lWav.SaveToFile('/tmp/output.__wav');
finally
lWav.Free;
end;
end;
But the output.wav result is corrupt, while the php one is correct.
Any hint?.
Regards,
Worked fine here:
procedure TMyAction.Post;
begin
with TFileStream.Create('out.txt', fmCreate) do
try
Write(TheRequest.Content[1], TheRequest.ContentLength);
finally
Free;
end;
end;
POST /cgi1.br http://cgi1.br HTTP/1.1
{key1:value1,key2:value2}
out.txt:
{key1:value1,key2:value2}
Or:
procedure TMyAction.Post;
begin
with TMemoryStream.Create do
try
Write(TheRequest.Content[1], TheRequest.ContentLength);
SaveToFile('post.txt');
finally
Free;
end;
end;
P.S.: php://input is not available with enctype=multipart/form-data.
Yes, with plain text everything works ok, the problem raises when I
try to receive binary data, in this case a WAV file, enctype:
audio/x-wav.
The client (a Flash app running on the browser) is sending a POST
message without params, just the binary data.
I made an example using fcl-web (without Brook) and the problem persists.
As I cannot attach files here, please download this:
http://tempsend.com/6088747E14/DBFE/wami.tar.gz
That's an example for anyone to test, please uncompress and copy the
following files to your apache documents folder (/var/www/html on Ubuntu):
testwami.html
swfobject.js
wamirecorder.js
Also please download the file Wami.sfw from here:
https://wami-recorder.googlecode.com/hg/example/client/Wami.swf and copy
to the same folder as the previous files. I cannot attach it here
because of email size restrictions of the mailing list.
Also please compile the project cgiproject.lpi contained in wami.tar.gz,
then copy the executable to your /cgi-bin/ directory.
Regards,
--
Leonardo M. Ramé
http://leonardorame.blogspot.com
--
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Re: [Lazarus] Translating php://input into fcl-web
On 23/08/14 20:54, silvioprog wrote: On Sat, Aug 23, 2014 at 8:09 PM, Leonardo M. Ramé l.r...@griensu.com mailto:l.r...@griensu.com wrote: I made an example using fcl-web (without Brook) and the problem persists. [...] Strange. I made some changes to work here in my PC and it worked fine: http://tempsend.com/63FEC90D7A Listen my ugly audio3.wav file. :-P Lazarus 1.2.4 r45510 FPC 2.6.4 i386-win32-win32/win64 My Apache: https://archive.apache.org/dist/httpd/binaries/win32/httpd-2.2.22-win32-x86-openssl-0.9.8t.msi Thank you very much Silvio for testing. My setup is XUbuntu 14.04 64bits, and Apache/2.4.7 (Ubuntu). Also I'm testing on Firefox 31 For Ubuntu with the latest version of Flash Plugin. What confuses me is the same setup, but instead of the CGI, if I use PHP, the file is stored with the complete audio. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Cannot find -lpthread
Hi, I'm trying to build fpc and lazarus from sources in XUbuntu 14.04. While trying to link fpc I get this: /usr/bin/ld: aviso: link.res contiene secciones de salida. ¿Olvidó -T? /usr/bin/ld: no se puede encontrar -lpthread /usr/bin/ld: no se puede encontrar -ldl /usr/bin/ld: no se puede encontrar -lc fpmake.pp(44,1) Error: Error while linking Does anyone know which package I'm missing? I've installed build-essential and libpthread-stubs0, but it still cannot find pthread... Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Cannot find -lpthread
El 21/08/14 a las 12:34, Henry Vermaak escibió: On Thu, Aug 21, 2014 at 12:22:45PM -0300, Leonardo M. Ramé wrote: Hi, I'm trying to build fpc and lazarus from sources in XUbuntu 14.04. While trying to link fpc I get this: /usr/bin/ld: aviso: link.res contiene secciones de salida. ¿Olvidó -T? /usr/bin/ld: no se puede encontrar -lpthread /usr/bin/ld: no se puede encontrar -ldl /usr/bin/ld: no se puede encontrar -lc fpmake.pp(44,1) Error: Error while linking These are generally in libc6-dev, but that should be pulled in by build-essential. Try installing apt-file and using: apt-file search libpthread.so Henry -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus Here's the result, apparently it is already installed: libc6: /lib/x86_64-linux-gnu/libpthread.so.0 libc6-arm64-cross: /usr/aarch64-linux-gnu/lib/libpthread.so.0 libc6-armel-armhf-cross: /usr/arm-linux-gnueabihf/libsf/libpthread.so.0 libc6-armel-cross: /usr/arm-linux-gnueabi/lib/libpthread.so.0 libc6-armhf-armel-cross: /usr/arm-linux-gnueabi/libhf/libpthread.so.0 libc6-armhf-cross: /usr/arm-linux-gnueabihf/lib/libpthread.so.0 libc6-dev: /usr/lib/x86_64-linux-gnu/libpthread.so libc6-dev-arm64-cross: /usr/aarch64-linux-gnu/lib/libpthread.so libc6-dev-armel-armhf-cross: /usr/arm-linux-gnueabihf/libs/libpthread.so libc6-dev-armel-cross: /usr/arm-linux-gnueabi/lib/libpthread.so libc6-dev-armhf-armel-cross: /usr/arm-linux-gnueabi/libhf/libpthread.so libc6-dev-armhf-cross: /usr/arm-linux-gnueabihf/lib/libpthread.so libc6-dev-i386: /usr/lib32/libpthread.so libc6-dev-powerpc-cross: /usr/powerpc-linux-gnu/lib/libpthread.so libc6-dev-ppc64-powerpc-cross: /usr/powerpc-linux-gnu/lib6/libpthread.so libc6-dev-ppc64el-cross: /usr/powerpc64le-linux-gnu/lib/libpthread.so libc6-dev-x32: /usr/libx32/libpthread.so libc6-i386: /lib32/libpthread.so.0 libc6-powerpc-cross: /usr/powerpc-linux-gnu/lib/libpthread.so.0 libc6-ppc64-powerpc-cross: /usr/powerpc-linux-gnu/lib64/libpthread.so.0 libc6-ppc64el-cross: /usr/powerpc64le-linux-gnu/lib/libpthread.so.0 libc6-x32: /libx32/libpthread.so.0 Any hint? -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Cannot find -lpthread
El 21/08/14 a las 14:44, Péter Gábor escibió: Hello! If you try static linking with a library you need the development package of it which contains the required binary statements/codes/records for the static linking. For example: libpthread-stubs0-dev or libpthread-dev or something similar... Yes I have installed libpthread-stubs0-dev (libpthread-dev does not exists here), but the error persists. I need to know what is that something similar package needed by fpc... -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] CGI Response.ContentStream client break
On 2014-07-04 08:22:30 +0200, Michael Van Canneyt wrote: On Thu, 3 Jul 2014, silvioprog wrote: 2014-07-03 17:33 GMT-03:00 Leonardo M. Ramé l.r...@griensu.com: [...] Mmm, no, too fast. Maybe the problem is on the client side. I'm using Synapse library as client, and I'm issuing THttpSend's Abort method to stop downloading. You can change your 'broker' to a embedded HTTP server, and put a break point and debug both (client/server). Is the cgi notified when the client does an Abort call?. Hm... AFAIK, no. Indeed. The CGI program is just terminated. Normally the file stream is then closed by the OS, so this should not have any side effects. (unless the OS is buggy). If you do observe side effects, try opening the file without share locks. using flags (fmOpenRead or fmShareDenyNone), I think. Michael. Thanks Michael, using (fmOpenRead or fmShareDenyNone) params did the trick!. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] CGI Response.ContentStream client break
Hi, I have a CGI program that serves some files using this code in an action: AResponse.ContentStream := TFileStream.Create(lImagePath, fmOpenRead); The problem I'm facing is that some times the client breaks the connection to the server, aparently leaving the file open. If the client tries to download the file again, a code 500 is returned. Is there a way to detect the connection break and destroy the stream gracefully?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] CGI Response.ContentStream client break
On 2014-07-03 17:20:53 -0300, silvioprog wrote: 2014-07-03 16:51 GMT-03:00 Leonardo M. Ramé l.r...@griensu.com: Hi, I have a CGI program that serves some files using this code in an action: AResponse.ContentStream := TFileStream.Create(lImagePath, fmOpenRead); The problem I'm facing is that some times the client breaks the connection to the server, aparently leaving the file open. If the client tries to download the file again, a code 500 is returned. Is there a way to detect the connection break and destroy the stream gracefully?. You can use the FreeContentStream property and free your stream manually, e.g.: var f: TFileStream; begin f := TFileStream.Create(...); try HttpResponse.FreeContentStream := False; HttpResponse.ContentType := 'application/octet-stream'; HttpResponse.ContentStream := f; HttpResponse.SendContent; finally f.Free; end; end; Thanks Silvio, it seems to work. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] CGI Response.ContentStream client break
On 2014-07-03 17:28:41 -0300, Leonardo M. Ramé wrote: On 2014-07-03 17:20:53 -0300, silvioprog wrote: 2014-07-03 16:51 GMT-03:00 Leonardo M. Ramé l.r...@griensu.com: Hi, I have a CGI program that serves some files using this code in an action: AResponse.ContentStream := TFileStream.Create(lImagePath, fmOpenRead); The problem I'm facing is that some times the client breaks the connection to the server, aparently leaving the file open. If the client tries to download the file again, a code 500 is returned. Is there a way to detect the connection break and destroy the stream gracefully?. You can use the FreeContentStream property and free your stream manually, e.g.: var f: TFileStream; begin f := TFileStream.Create(...); try HttpResponse.FreeContentStream := False; HttpResponse.ContentType := 'application/octet-stream'; HttpResponse.ContentStream := f; HttpResponse.SendContent; finally f.Free; end; end; Thanks Silvio, it seems to work. Mmm, no, too fast. Maybe the problem is on the client side. I'm using Synapse library as client, and I'm issuing THttpSend's Abort method to stop downloading. Is the cgi notified when the client does an Abort call?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Errors while linking
': drawer.pas:(.debug_info+0x2b8): undefined reference to `DBG_$CONTROLS_$$_TMouseWheelEvent' drawer.pas:(.debug_info+0x3d0): undefined reference to `DBG_$FORMS_$$_THintWindow' drawer.pas:(.debug_info+0x4b4): undefined reference to `DBG_$CONTROLS_$$_TMouseWheelEvent' drawer.pas:(.debug_info+0x6b3): undefined reference to `DBG_$CONTROLS_$$_TMouseButton' drawer.pas:(.debug_info+0x829): undefined reference to `DBG_$CONTROLS_$$_TMouseButton' drawer.pas:(.debug_info+0xd66): undefined reference to `DBG_$CONTROLS_$$_TAlign' drawer.pas:(.debug_info+0xefa): undefined reference to `DBG_$CONTROLS_$$_TDragState' /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/series.o: In function `.La67': series.pas:(.debug_info+0x80ec): undefined reference to `DBG2_$EXTCTRLS_$$_TPaintBox' series.pas:(.debug_info+0x81e6): undefined reference to `DBG_$CONTROLS_$$_TMouseButton' series.pas:(.debug_info+0x8230): undefined reference to `DBG_$CONTROLS_$$_TMouseButton' /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/layout.o: In function `.La2': layout.pas:(.debug_info+0x264): undefined reference to `DBG_$EXTCTRLS_$$_TPaintBox' /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/layout.o: In function `.La6': layout.pas:(.debug_info+0x818): undefined reference to `DBG_$CONTROLS_$$_TMouseWheelEvent' layout.pas:(.debug_info+0x876): undefined reference to `DBG_$EXTCTRLS_$$_TPanel' layout.pas:(.debug_info+0x887): undefined reference to `DBG_$CONTROLS_$$_TControl' layout.pas:(.debug_info+0xa66): undefined reference to `DBG_$CONTROLS_$$_TControl' layout.pas:(.debug_info+0xacd): undefined reference to `DBG_$EXTCTRLS_$$_TPanel' layout.pas:(.debug_info+0xafe): undefined reference to `DBG_$CONTROLS_$$_TMouseWheelEvent' layout.pas:(.debug_info+0x120b): undefined reference to `DBG_$CONTROLS_$$_TWinControl' layout.pas:(.debug_info+0x134f): undefined reference to `DBG_$EXTCTRLS_$$_TPaintBox' layout.pas:(.debug_info+0x15a9): undefined reference to `DBG_$CONTROLS_$$_TCursor' /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/dlglayout.o: In function `.La1': dlglayout.pas:(.debug_info+0xa3): undefined reference to `DBG2_$FORMS_$$_TForm' dlglayout.pas:(.debug_info+0xb9): undefined reference to `DBG_$BUTTONPANEL_$$_TButtonPanel' dlglayout.pas:(.debug_info+0xcb): undefined reference to `DBG_$STDCTRLS_$$_TGroupBox' dlglayout.pas:(.debug_info+0xdd): undefined reference to `DBG_$STDCTRLS_$$_TGroupBox' dlglayout.pas:(.debug_info+0xf3): undefined reference to `DBG_$BUTTONS_$$_TSpeedButton' dlglayout.pas:(.debug_info+0x10a): undefined reference to `DBG_$BUTTONS_$$_TSpeedButton' more similar errors Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Errors while linking
On 2014-06-19 17:26:40 +0200, Mattias Gaertner wrote: On Thu, 19 Jun 2014 11:49:46 -0300 Leonardo M. Ramé l.r...@griensu.com wrote: Hi People, while trying to compile an app that uses BGRabitmap I've got many linking errors when compiling with debugging information enabled. I'm using Lazarus and FPC from trunk (updated today) on a Ubuntu 12.04 64bit machine. Here's the output with errors: /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/main.o: In function `.La4': main.pas:(.debug_info+0x16e): undefined reference to `DBG2_$ACTNLIST_$$_TAction' /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/main.o: In function `.La5': Have you tried a clean rebuild? Run / Clean up build files? Yes, and the problem persists. Also deleted the debugger directory of my svn lazarus directory and updated again, but I've got the same. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Errors while linking
On 2014-06-19 17:32:00 +0200, Reinier Olislagers wrote: On 19/06/2014 16:49, Leonardo M. Ramé wrote: I'm using Lazarus and FPC from trunk (updated today) on a Ubuntu 12.04 64bit machine. Here's the output with errors: /home/leonardo/Desarrollo/griensu/GViewerIII/lib/x86_64-linux/main.o: In function `.La4': main.pas:(.debug_info+0x16e): undefined reference to `DBG2_$ACTNLIST_$$_TAction' What options did you use when compiling - e.g. one or more of the -g... options? Hmm, it was DWARF3 (beta), I changed to -g and it worked. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Run command disabled
Hi people, I don't know what I did but the Run command (F9) is disabled in my program. Do you know how can I enable it again?. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Run command disabled
On 2014-06-11 09:27:14 -0300, silvioprog wrote: 2014-06-11 9:06 GMT-03:00 Leonardo M. Ramé l.r...@griensu.com: Hi people, I don't know what I did but the Run command (F9) is disabled in my program. Do you know how can I enable it again?. Shift+Ctrl+F11; Project Options Miscellaneous; and check Project is runnable. Thanks Silvio, it worked. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [ANN] Brook 3.0.0 release!
On 2014-05-18 23:45:23 -0300, silvioprog wrote: 2014-05-15 8:45 GMT-03:00 Leonardo M. Ramé l.r...@griensu.com: On 2014-05-13 20:10:20 -0300, silvioprog wrote: The Brook team is glad to announce the release 3.0.0. This version was compiled and tested successfully with Free Pascal 2.6.4. Here is the list of changes between version 2.6.4 and 3.0.0 of the Brook: https://github.com/silvioprog/brookframework/compare/57f8e01868dbec9708129bc789940df2a93c1637...v3.0.0(or short URL here: http://goo.gl/kr9oX0) The release is available for download on Github: https://github.com/silvioprog/brookframework/releases/tag/v3.0.0 Or through the Latest Release button on the project home page: http://silvioprog.github.io/brookframework/ Minimum requirements: Free Pascal 2.6.4. If you prefer the Lazarus interface, choose the 1.2.2 version. Enjoy! Hi Silvio, congratulations for the new release. I'm using it on one of my apps, and it's fantastic!. Can you add a What's new item in the home page or in the Wiki?. I know we are programmers and shouldn't have problems reading the git diff, but I'll be easy for us to know what additions and improvements you made. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com Hello Leonardo, I'm flattered with your comment. We can add a new file, called WHATS_NEW.txt, and it can be rewritten in all new versions, showing what's new in this released version. What do you think of this idea? Great!, that's what I was thinking of. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] [ANN] Brook 3.0.0 release!
On 2014-05-13 20:10:20 -0300, silvioprog wrote: The Brook team is glad to announce the release 3.0.0. This version was compiled and tested successfully with Free Pascal 2.6.4. Here is the list of changes between version 2.6.4 and 3.0.0 of the Brook: https://github.com/silvioprog/brookframework/compare/57f8e01868dbec9708129bc789940df2a93c1637...v3.0.0(or short URL here: http://goo.gl/kr9oX0) The release is available for download on Github: https://github.com/silvioprog/brookframework/releases/tag/v3.0.0 Or through the Latest Release button on the project home page: http://silvioprog.github.io/brookframework/ Minimum requirements: Free Pascal 2.6.4. If you prefer the Lazarus interface, choose the 1.2.2 version. Enjoy! Hi Silvio, congratulations for the new release. I'm using it on one of my apps, and it's fantastic!. Can you add a What's new item in the home page or in the Wiki?. I know we are programmers and shouldn't have problems reading the git diff, but I'll be easy for us to know what additions and improvements you made. Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] BSD Magazine featuring Free Pascal!
Congrats /Michael Van Canneyt/ for your article in the BSD Magazine april issue!. Please download the latest edition from: http://bsdmag.org/ Regards, -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Prevent visual updates
On 30/03/14 08:40, Jürgen Hestermann wrote: Am 2014-03-30 12:45, schrieb Chris Crori: Hi gyus, is there a way to prevent LCL (visual) updates for a short period? i am thinking of something like BeginUpdate/EndUpade in Grids, so i can make some changes drasticaly and avoid the flickering effect Functions BeginUpdate/EndUpdate exist. Just use them. Did you try setting DoubleBuffererd := True; in the Form OnCreate event?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
