Re: [fpc-pascal] Parse JSON
On Fri, 23 Jun 2023, Darius Blaszyk via fpc-pascal wrote:
Hi all,
I've hardly done anything with JSON in Freepascal before, so apologies for
the trivial question. I want to traverse an array in JSON and retrieve the
elements (which I don't know what they are in advance) one by one. An example
of the JSON file is given below.
"keywords": {
"key": "value",
"key1": "value1",
"key2": "value2"
},
Ideally, I'd like to be able to stick to the FPC out-of-the-box library. Any
help would be appreciated.
Something like:
uses classes, fpjson;
var
J : TJSONObject;
F : TFileStream;
begin
J:=nil;
F:=TFileStream.Create('yourfile.json',fmOpenRead);
try
J:=GetJSON(F) as TJSONObject;
For I:=0 to J.Count-1 do
Writeln(J.Names[i],' : ',J.AsString);
finally
J.Free;
F.Free;
end;
end.
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Re: [fpc-pascal] Parse JSON
fpJson fully supports JSON:
https://www.freepascal.org/docs-html/fcl/fpjson/index.html
https://wiki.lazarus.freepascal.org/JSON
There's also JSON support in the LGenerics package, but it's not a bundled
package as far as I know.
Thomas
- Original Message -
From: Darius Blaszyk via fpc-pascal
To: FPC-Pascal users discussions
Sent: Friday, June 23, 2023, 16:02:26
Subject: [fpc-pascal] Parse JSON
Hi all,
I've hardly done anything with JSON in Freepascal before, so apologies
for the trivial question. I want to traverse an array in JSON and
retrieve the elements (which I don't know what they are in advance) one
by one. An example of the JSON file is given below.
"keywords": {
"key": "value",
"key1": "value1",
"key2": "value2"
},
Ideally, I'd like to be able to stick to the FPC out-of-the-box library.
Any help would be appreciated.
Rgds, Darius
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[fpc-pascal] Parse JSON
Hi all,
I've hardly done anything with JSON in Freepascal before, so apologies
for the trivial question. I want to traverse an array in JSON and
retrieve the elements (which I don't know what they are in advance) one
by one. An example of the JSON file is given below.
"keywords": {
"key": "value",
"key1": "value1",
"key2": "value2"
},
Ideally, I'd like to be able to stick to the FPC out-of-the-box library.
Any help would be appreciated.
Rgds, Darius___
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Re: [fpc-pascal] Microsoft SAPI on Freepascal
Hi James,
I am not familiar with variants and Ole objects, sorry about that. I found
some people using code with Ole objects and it that seems to work, can you
chack if it applies to your case?
https://stackoverflow.com/questions/17970573/using-word-ole-in-lazarus-freepascal
Best,
R
On Sun, Jun 25, 2023 at 2:25 PM
wrote:
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> Today's Topics:
>
>1. Re: Microsoft SAPI on Freepascal (Rafael Pican?o)
>2. Re: SDL2 Event Registration (and case statements)
> (Rafael Pican?o)
>3. Re: Microsoft SAPI on Freepascal (Rafael Pican?o)
>4. Re: Microsoft SAPI on Freepascal (James Richters)
>
>
> --
>
> Message: 1
> Date: Sun, 25 Jun 2023 13:33:24 -0300
> From: Rafael Pican?o
> To: fpc-pascal@lists.freepascal.org
> Subject: Re: [fpc-pascal] Microsoft SAPI on Freepascal
> Message-ID:
> h9m...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi James,
>
> > SpVoice : Variant;
> > SpVoice := CreateOleObject('SAPI.SpVoice')
>
> The Free Pascal Variant type does not handle interfaces by default. Take a
> look:
>
> https://wiki.freepascal.org/Variant
>
> Best,
> R
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> Message: 2
> Date: Sun, 25 Jun 2023 13:42:00 -0300
> From: Rafael Pican?o
> To: fpc-pascal@lists.freepascal.org
> Subject: Re: [fpc-pascal] SDL2 Event Registration (and case
> statements)
> Message-ID:
> hsjvo9...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Thanks Guilhermo,
>
> Just to clarify, I do have a limited number of events. Lets say, 2 events.
> So, using the SDL_RegisterEvents function, is it possible to define these
> two new events as normal constants so they will be known at compile time
> and will make Free Pascal case statements happy?
>
> Best,
> R
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> Message: 3
> Date: Sun, 25 Jun 2023 13:52:17 -0300
> From: Rafael Pican?o
> To: fpc-pascal@lists.freepascal.org
> Subject: Re: [fpc-pascal] Microsoft SAPI on Freepascal
> Message-ID:
> <
> cagpuci4jaaqdqnrvjgonezaos61mvuf-okabx92bm9stjo2...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi James,
>
> Sorry, I missed the following reference:
>
> "Remark Dispatch interface support for variants is currently broken in the
> compiler." (https://www.freepascal.org/docs-html/ref/refsu20.html)
>
> Best,
> R
>
> >
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> Message: 4
> Date: Sun, 25 Jun 2023 13:24:46 -0400
> From: "James Richters"
> To: , "'FPC-Pascal users discussions'"
>
> Subject: Re: [fpc-pascal] Microsoft SAPI on Freepascal
> Message-ID: <015d01d9a789$f1097fb0$d31c7f10$@productionautomation.net>
> Content-Type: text/plain; charset="utf-8"
>
> So it?s broken? It seems like the link you provided is trying to show a
> workaround, but I don?t know how I could apply that.
>
> >"Remark Dispatch interface support for variants is currently broken in
> the compiler." (https://www.freepascal.org/docs-html/ref/refsu20.html)
>
>
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Re: [fpc-pascal] Microsoft SAPI on Freepascal
So it’s broken? It seems like the link you provided is trying to show a workaround, but I don’t know how I could apply that. >"Remark Dispatch interface support for variants is currently broken in the >compiler." (https://www.freepascal.org/docs-html/ref/refsu20.html) ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Microsoft SAPI on Freepascal
Hi James, Sorry, I missed the following reference: "Remark Dispatch interface support for variants is currently broken in the compiler." (https://www.freepascal.org/docs-html/ref/refsu20.html) Best, R > ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] SDL2 Event Registration (and case statements)
Thanks Guilhermo, Just to clarify, I do have a limited number of events. Lets say, 2 events. So, using the SDL_RegisterEvents function, is it possible to define these two new events as normal constants so they will be known at compile time and will make Free Pascal case statements happy? Best, R ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Microsoft SAPI on Freepascal
Hi James,
> SpVoice : Variant;
> SpVoice := CreateOleObject('SAPI.SpVoice')
The Free Pascal Variant type does not handle interfaces by default. Take a
look:
https://wiki.freepascal.org/Variant
Best,
R
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Re: [fpc-pascal] Microsoft SAPI on Freepascal
Ooops forgot the link:
https://wiki.lazarus.freepascal.org/SAPI
From: fpc-pascal On Behalf Of
James Richters via fpc-pascal
Sent: Sunday, June 25, 2023 8:52 AM
To: 'FPC-Pascal users discussions'
Cc: James Richters
Subject: [fpc-pascal] Microsoft SAPI on Freepascal
I am trying to get Microsoft speech synthesis to work with Freepascal. I am
trying to follow the guide here:
I don't know what I am doing wrong. SAPI is working on my system, because
the TTSApp Demo that comes with the
Microsoft Speech SDK works fine.
Here is my test program:
{$mode objfpc}
uses
CRT, Windows, SysUtils, ComObj, Variants, OLEServer, Classes, ActiveX,
ShellApi;
var
SavedCW: Word;
SpVoice: Variant;
MyWideString: WideString;
begin
CoInitialize(nil);
SpVoice := CreateOleObject('SAPI.SpVoice');
// Change FPU interrupt mask to avoid SIGFPE exceptions
MyWideString := WideString('Hello, the time is ' + TimeToStr(Now));
Writeln(MyWideString);
SavedCW := Get8087CW;
try
Set8087CW(SavedCW or $4);
SpVoice.Speak(MyWideString, 0);
finally
// Restore FPU mask
Set8087CW(SavedCW);
end;
Writeln('Press Any Key');
ReadKey;
CoUninitialize;
end.
Whenever my program gets to:
SpVoice.Speak(MyWideString, 0);
Even if I hardcode something like:
SpVoice.Speak('Hello', 0);
I always get:
Running "i:\programming\TTS.exe "
Hello, the time is 8:41:27
An unhandled exception occurred at $0041FC90:
EOleError: Variant does not reference an automation object
$0041FC90
$00424DAD
$0040BB31
$00401A8A main, line 21 of i:\programming\TTS.pas
I don't really understand what this means, and I can't find a complete
sample program that I can just compile and run. I feel I must be missing
something but I don't know what it is.
Any help is greatly appreciated!
James
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[fpc-pascal] Microsoft SAPI on Freepascal
I am trying to get Microsoft speech synthesis to work with Freepascal. I am
trying to follow the guide here:
I don't know what I am doing wrong. SAPI is working on my system, because
the TTSApp Demo that comes with the
Microsoft Speech SDK works fine.
Here is my test program:
{$mode objfpc}
uses
CRT, Windows, SysUtils, ComObj, Variants, OLEServer, Classes, ActiveX,
ShellApi;
var
SavedCW: Word;
SpVoice: Variant;
MyWideString: WideString;
begin
CoInitialize(nil);
SpVoice := CreateOleObject('SAPI.SpVoice');
// Change FPU interrupt mask to avoid SIGFPE exceptions
MyWideString := WideString('Hello, the time is ' + TimeToStr(Now));
Writeln(MyWideString);
SavedCW := Get8087CW;
try
Set8087CW(SavedCW or $4);
SpVoice.Speak(MyWideString, 0);
finally
// Restore FPU mask
Set8087CW(SavedCW);
end;
Writeln('Press Any Key');
ReadKey;
CoUninitialize;
end.
Whenever my program gets to:
SpVoice.Speak(MyWideString, 0);
Even if I hardcode something like:
SpVoice.Speak('Hello', 0);
I always get:
Running "i:\programming\TTS.exe "
Hello, the time is 8:41:27
An unhandled exception occurred at $0041FC90:
EOleError: Variant does not reference an automation object
$0041FC90
$00424DAD
$0040BB31
$00401A8A main, line 21 of i:\programming\TTS.pas
I don't really understand what this means, and I can't find a complete
sample program that I can just compile and run. I feel I must be missing
something but I don't know what it is.
Any help is greatly appreciated!
James
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Re: [fpc-pascal] SDL2 Event Registration (and case statements)
Hi. > The SDL2 documentation recommends you to register constants with: > > Uint32 SDL_RegisterEvents(int numevents); >numevents = the number of events to be allocated. >Returns the beginning event number, or (Uint32)-1 if there are not > enough user-defined events left. > > The SDL_RegisterEvents result is not known at compile time, so one > can't use them as case conditions. So, Is there a workaround for > building these constants at compile time? If you know how many events were registered, then you can create constants. Else, you can't. > > Best, > R Guillermo "Ñuño" Martínez ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] 3123 inherited not supported inside inline
On Sun, 25 Jun 2023, Hairy Pixels via fpc-pascal wrote: On Jun 24, 2023, at 10:27 PM, Michael Van Canneyt via fpc-pascal wrote: It seems to me no gain is to be had from e.g. inlining a routine of 500+ lines of code. What if the function was only called from 3 places in the program and each one of those was in something with very long loops, say 1 million iterations? If you inline you'd get only an extra 1000 lines of code size but save 3 million function calls which could be a big savings. I doubt there will be any gain: 500 lines of code will result in many thousands of assembler instructions being executed 3 million times. The few additional instructions generated by a function call are dwarfed by that. More importantly: Inline is an automatism to optimize where possible. You can always find exceptional cases which will not be handled by an automatism. They are irrelevant. It's the bulk of cases that needs to be solved by automatisms. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
