Re: How to checkout only the changes

[horst . schlonz]

On 03/31/2017 12:22 PM, Andrew Reedick wrote:



-Original Message-
From: Daniel Shahaf [mailto:d...@daniel.shahaf.name]
Sent: Thursday, March 30, 2017 3:41 PM
To: Andrew Reedick
Cc: horst.schl...@gmx.de; users@subversion.apache.org
Subject: Re: How to checkout only the changes

'vsvn diff --summarize' or 'svn log -qv' would be better.  (They're O(1) as 
opposed to O(revision size).)


Unfortunately, neither one differentiates between directories and filenames 
(unless you go with --xml.)  And exporting a dir will grab a bit more than what 
we wanted.  Unless of course the contents of new directories count as changes.  
Which would be a requirements question for the OP.



I'm not sure if I understand what you guys are talking about.

Done some testing and it seems to do well, thanks. It exports a file 
with its path when the file has been added or modified (compared to the 
previous revision). I think I can easily wrap this in a loop to go 
through all revisions of a repository.


However, it would be even better if it would ignore cheap copies as 
these do not not contain that much new information. Maybe I can catch 
most of these if I ignore pathnames that contain "tags" or "branches".

RE: How to checkout only the changes

[Andrew Reedick]

> -Original Message-
> From: Daniel Shahaf [mailto:d...@daniel.shahaf.name] 
> Sent: Thursday, March 30, 2017 3:41 PM
> To: Andrew Reedick
> Cc: horst.schl...@gmx.de; users@subversion.apache.org
> Subject: Re: How to checkout only the changes
>
> 'vsvn diff --summarize' or 'svn log -qv' would be better.  (They're O(1) as 
> opposed to O(revision size).)


Unfortunately, neither one differentiates between directories and filenames 
(unless you go with --xml.)  And exporting a dir will grab a bit more than what 
we wanted.  Unless of course the contents of new directories count as changes.  
Which would be a requirements question for the OP.

Re: How to checkout only the changes

[Daniel Shahaf]

Andrew Reedick wrote on Thu, Mar 30, 2017 at 13:09:26 +:
> svn log --diff -r $REV "$SVNREPO"  | grep '^+++' | perl -pe 's/^\+\+\+ //; 
> s/\t.*$//' | while read i

'svn diff --summarize' or 'svn log -qv' would be better.  (They're O(1)
as opposed to O(revision size).)

RE: How to checkout only the changes

[Andrew Reedick]

New and improved and simplified version.  Uses 'svn log --diff' to get the 
files that changed.
Again, only lightly tested.  (The previous script assumed that the order of the 
xml attributes didn't change and it did.  Ooops.)
I used perl instead of sed due to sed version silliness in regards to tabs; so 
feel free to the perl equivalent sed commands to remove the trailing "\t 
(revision 12345)" from the "svn log --diff ... | grep '^+++' " output.
Remove the two echo commands to actually run the mkdir/export commands.

Edge case:  I didn't test how 'svn log --diff' handles deleted files.

#!/bin/bash

REV=$1
SVNREPO=$2

svn log --diff -r $REV "$SVNREPO"  | grep '^+++' | perl -pe 's/^\+\+\+ //; 
s/\t.*$//' | while read i
do
D=./`dirname "$i"`
echo mkdir -p "$D"
echo svn export --force "$SVNREPO/$i@$REV" "$D/"
done




-Original Message-
From: horst.schl...@gmx.de [mailto:horst.schl...@gmx.de] 
Sent: Wednesday, March 29, 2017 9:28 PM
To: users@subversion.apache.org
Subject: Re: How to checkout only the changes

On 03/27/2017 10:08 AM, Andrew Reedick wrote:
>> From: horst.schl...@gmx.de [mailto:horst.schl...@gmx.de]
>> Sent: Friday, March 24, 2017 4:04 PM
>> To: users@subversion.apache.org
>> Subject: How to checkout only the changes
>>
>>
>> Is there a way to export only the changes, that occured in a specific 
>> revision? Like export or checkout only the added or modified files in their 
>> respective paths? Deletions and cheap copies cannot be treated that way, 
>> obviously. Please CC as I am not subscribed.
>
> FYI, 'svn copy' counts as an Add.  That may or may not be a concern?
>
> Mostly Untested But Seems to Work in the Average Case(tm), so user beware:
>
> #!/bin/bash
>
> # usage:  foo.sh 1234   http://svn_server/repo_name
> REV=$1
> SVNREPO=$2
>
> svn log -qv -r $REV $SVNREPO
>
> # Yes we're grepping on XML because :laziness:
> # And we're using perl because I can't be bothered with sed/awk subtleties
> svn log -qv --xml -r $REV "$SVNREPO" | perl -ne 'chomp; $a=1 if /^   
> action="[AD]"/; print "$1\n" if ( $a && /^   kind="file">(.*)<\/path>/ ); 
> $a=0 if /<\/path>/;' | while read i
> do
>   D=./`dirname "$i"`
>   mkdir -p "$D"
>   svn export --force "$SVNREPO/$i@$REV" "$D/"
> done
>

The script just drops to the shell with exit code 0. My perl knowledge is very 
limited, but to debug I executed this

$ echo "action=\"A\">/trunk/text.txt" | perl -ne 'chomp; $a=1 if /^ 
action="[AD]"/; print "$1\n" if ( $a && /^ kind="file">(.*)<\/path>/ ); $a=0 if 
/<\/path>/;'

I assume that is supposed to do something but for me it just drops to the shell 
with exit code 0.

Re: How to checkout only the changes

[horst . schlonz]

On 03/27/2017 10:08 AM, Andrew Reedick wrote:

From: horst.schl...@gmx.de [mailto:horst.schl...@gmx.de]
Sent: Friday, March 24, 2017 4:04 PM
To: users@subversion.apache.org
Subject: How to checkout only the changes


Is there a way to export only the changes, that occured in a specific revision? 
Like export or checkout only the added or modified files in their respective 
paths? Deletions and cheap copies cannot be treated that way, obviously. Please 
CC as I am not subscribed.


FYI, 'svn copy' counts as an Add.  That may or may not be a concern?

Mostly Untested But Seems to Work in the Average Case(tm), so user beware:

#!/bin/bash

# usage:  foo.sh 1234   http://svn_server/repo_name
REV=$1
SVNREPO=$2

svn log -qv -r $REV $SVNREPO

# Yes we're grepping on XML because :laziness:
# And we're using perl because I can't be bothered with sed/awk subtleties
svn log -qv --xml -r $REV "$SVNREPO" | perl -ne 'chomp; $a=1 if /^   action="[AD]"/; print "$1\n" if ( $a 
&& /^   kind="file">(.*)<\/path>/ ); $a=0 if /<\/path>/;' | while read i
do
D=./`dirname "$i"`
mkdir -p "$D"
svn export --force "$SVNREPO/$i@$REV" "$D/"
done



The script just drops to the shell with exit code 0. My perl knowledge 
is very limited, but to debug I executed this


$ echo "action=\"A\">/trunk/text.txt" | perl -ne 'chomp; $a=1 if 
/^ action="[AD]"/; print "$1\n" if ( $a && /^ kind="file">(.*)<\/path>/ 
); $a=0 if /<\/path>/;'


I assume that is supposed to do something but for me it just drops to 
the shell with exit code 0.

RE: How to checkout only the changes

[Andrew Reedick]

> From: horst.schl...@gmx.de [mailto:horst.schl...@gmx.de] 
> Sent: Friday, March 24, 2017 4:04 PM
> To: users@subversion.apache.org
> Subject: How to checkout only the changes
>
>
> Is there a way to export only the changes, that occured in a specific 
> revision? Like export or checkout only the added or modified files in their 
> respective paths? Deletions and cheap copies cannot be treated that way, 
> obviously. Please CC as I am not subscribed.

FYI, 'svn copy' counts as an Add.  That may or may not be a concern?

Mostly Untested But Seems to Work in the Average Case(tm), so user beware:

#!/bin/bash

# usage:  foo.sh 1234   http://svn_server/repo_name
REV=$1
SVNREPO=$2

svn log -qv -r $REV $SVNREPO 

# Yes we're grepping on XML because :laziness:
# And we're using perl because I can't be bothered with sed/awk subtleties 
svn log -qv --xml -r $REV "$SVNREPO" | perl -ne 'chomp; $a=1 if /^   
action="[AD]"/; print "$1\n" if ( $a && /^   kind="file">(.*)<\/path>/ ); $a=0 
if /<\/path>/;' | while read i
do 
D=./`dirname "$i"`
mkdir -p "$D"
svn export --force "$SVNREPO/$i@$REV" "$D/"
done

Re: How to checkout only the changes

[Mark Phippard]

On Sat, Mar 25, 2017 at 10:59 AM,  wrote:

> On 3/24/2017 7:56 PM, Ryan Schmidt wrote:
>
>>
>> On Mar 24, 2017, at 15:04, horst.schl...@gmx.de wrote:
>>
>> Is there a way to export only the changes, that occured in a specific
>>> revision? Like export or checkout only the added or modified files in their
>>> respective paths? Deletions and cheap copies cannot be treated that way,
>>> obviously. Please CC as I am not subscribed.
>>>
>>
>> There's no built-in command to do that.
>>
>> Maybe somebody wrote a script for this?
>
> I'd like to index these files, but I don't want to index the same files
> again and again.
>

You could maintain a working copy and just run svn update and scrape the
output to identify changes.  Otherwise you need to run svn log -v with a
script and then use svn cat to get the individual files.

-- 
Thanks

Mark Phippard
http://markphip.blogspot.com/

Re: How to checkout only the changes

[horst . schlonz]

On 3/24/2017 7:56 PM, Ryan Schmidt wrote:


On Mar 24, 2017, at 15:04, horst.schl...@gmx.de wrote:


Is there a way to export only the changes, that occured in a specific revision? 
Like export or checkout only the added or modified files in their respective 
paths? Deletions and cheap copies cannot be treated that way, obviously. Please 
CC as I am not subscribed.


There's no built-in command to do that.


Maybe somebody wrote a script for this?

I'd like to index these files, but I don't want to index the same files 
again and again.

Re: How to checkout only the changes

[Ryan Schmidt]

On Mar 24, 2017, at 15:04, horst.schl...@gmx.de wrote:

> Is there a way to export only the changes, that occured in a specific 
> revision? Like export or checkout only the added or modified files in their 
> respective paths? Deletions and cheap copies cannot be treated that way, 
> obviously. Please CC as I am not subscribed.

There's no built-in command to do that.