Getting the last revision number in SVN

Question

Using PHP  Perl  or Python  preferably PHP   I need a way to query an SVN database and find out the last revision number sent to SVN  I don t need anything other than that  It needs to be non-intensive  so I do it every 5 minutes as a cron job  SVN s performance should not be affected    SVN is located on my Intranet  but not my specific computer   I have SVN installed  but no bindings installed for PHP Perl Python  I m running Windows XP  but I would prefer a platform-independent solution that can also work in Linux  If you have a Linux-only  or XP-only  solution  that would also be helpful

User · Answer

You re looking for a call that s similar to the commandline call  svn info URL   It seems that this is possible using the pysvn library  and there s a recipe that should help you get started  I m not sure if there s something similar for PHP   If you need to resort to calling the SVN binary yourself  make sure to use the --xml parameter to get the result as XML  That should be easier to parse than the commandline output

User · Answer

You can try the below command   svn info -r  HEAD    grep Revision    awk -F      print  2

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A note about getting the latest revision number   Say I ve cd-ed in a revisioned subdirectory  MyProjectDir   Then  if I call svnversion     svnversion   323 340       I get  323 340   which I guess means   you ve got items here  ranging from revision 323 to 340     nbsp   Then  if I call svn info     svn info Path    URL  svn ssh   server com path to MyProject MyProjectDir Repository Root  svn ssh   server com path to MyProject Repository UUID  0000ffff-ffff-    Revision  323 Node Kind  directory Schedule  normal Last Changed Author  USER Last Changed Rev  323 Last Changed Date  2011-11-09 18 34 34  0000  Wed  09 Nov 2011        I get  323  as revision - which is actually the lowest revision of those that reported by svnversion    nbsp   We can then use svn info in recursive mode to get more information from the local directory    gt  svn info -R   grep  Path  Revision  Path    Revision  323 Path  file1 txt Revision  333 Path  file2 txt Revision  327 Path  file3 txt Revision  323 Path  subdirA Revision  328 Path  subdirA file1 txt Revision  339 Path  subdirA file1 txt Revision  340 Path  file1 txt Revision  323            remove the grep to see the more details     nbsp   Finally  what to do when we want to check what is the latest revision of the online repository  in this case    server com   Then we again issue svn info  but with -r HEAD  note the difference between capital -R option previously  and lowercase -r now     gt  svn info -r  HEAD  USER server com s password  Path  MyProjectDir URL  svn ssh   server com path to MyProject MyProjectDir Repository Root  svn ssh   server com path to MyProject Repository UUID  0000ffff-ffff-    Revision  340 Node Kind  directory Last Changed Author  USER Last Changed Rev  340 Last Changed Date  2011-11-11 01 53 50  0000  Fri  11 Nov 2011    The interesting thing is - svn info still refers to the current subdirectory  MyProjectDir   however  the online path is reported as MyProjectDir  as opposed to   for the local case  - and the online revision reported is the highest  340 - as opposed to the lowest one  323 reported locally

User · Answer

I think you are looking for  svn info -r HEAD   Can you shell to that command   You ll probably need to supply login credentials with the repository as well

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This can be obtained using  SVN  library   import svn remote  file path    enter your filepath   svn inf   svn remote RemoteClient file path   head revision     x for x in svn inf log default revision to    HEAD     -1   revision   The head revision should contain the latest revision number of the file

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If you want really short one   svn info      The caret notation is a shorthand for  the URL of the repository s root directory

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Starting with Subversion 1 9 you can use option --show-item to get a value of one of fields of svn info command s output  This command will display revision number only   svn info --show-item revision  lt URL-to-repository gt   Get XMLed output of svn info using --xml option and use PowerShell to get the revision number  Here is a simple example    xml  svninfo   svn info  lt REPOSITORY-URL gt  --xml -r HEAD  latestrevnum    svninfo info entry revision  latestrevnum  Using VisualSVN Server 3 4 or newer  you can get the number of revisions in a repository by running these commands    repo   Get-SvnRepository  lt REPOSITORY-NAME gt    repo Revisions  See Get-SvnRepository PowerShell cmdlet reference for more information

User · Answer

The simplest and clean way to do that  actually svn 1 9  released 2015  is using   svn info --show-item revision  --no-newline   SVNURL SVNPATH     The output is the number of the last revision  joungest  for the SVNURL  or the number of the current revision of the working copy of SVNPATH  The --no-newline is optional  instructs svn not to emit a cosmetic newline   n  after the value  if you need minimal output  only the revision number    See  https   subversion apache org docs release-notes 1 9 html svn-info-item

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This should work in Bash  from a working directory  I ve used it in Windows with unixutils installed   svn info  grep Revision   cut -c11-

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Looks like there is an entry in the official FAQ for this  The source code is in C but the same principle applies  as outlined here in this mailing list post

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The following should work   svnlook youngest  lt repo-path gt    It returns a single revision number

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You can use the XML out format  for example     svn info --xml   grep  revision    head -1   grep -Eo   0-9      xargs expr -1     Example  using the revision number  working  svn info --xml   grep  revision    head -1   grep -Eo   0-9      xargs expr -1    svn diff -r  working HEAD --summarize --xml

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svn info -r HEAD   This will give you the latest revision number at the head of your repository   There are some nice blog posts about integrating subversion numbers into your build script    Getting Subversion Revision in Ant Automatic Build Sub-Versioning in Xcode

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nickh SCLLNHENRY   Work standingcloud svn main trunk dev scripts  svnversion 12354   Or  nickh SCLLNHENRY   Work standingcloud svn main trunk dev scripts  svn info --xml       xmlstarlet sel -t --value-of    entry  revision  12354   Or  nickh SCLLNHENRY   Work standingcloud svn main trunk dev scripts  svn info --xml   xmlstarlet sel -t --value-of    commit  revision  12335

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The posted solutions don t handle the case when externals are being used   If I have a URL or a working copy with the svn externals property set  the externals may change and thus the subversion server s latest revision will change   But the latest revision of the working copy or URL will only report the revision number when the svn externals propty was change or any item lower in the URL path  which is expected behavior   So you either get the svn externals property and iterate over the URLs and pick the heights revision or query the base URL from the subversion server  The version reported from the base URL will contain the latest revision for EVERYTHING on the server   So  if you are using externals  it s best to use svn info BASE URL where BASE URL is the  root URL for all paths on the subversion server

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If you have the misfortune of needing to do this from a Windows batch file  here is the incantation you are looking for   set REV unknown for  f  usebackq tokens 1 2 delims       A in   svn info   do if    A      Revision  set REV   B echo Current SVN revision is  REV    This runs  svn info   iterating through each line of generated output  It uses a colon as a delimiter between the first and second token on the line  When the first token is  Revision  it sets the environment variable REV to the second token

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Just svn info in BASH will give you all details  RESULT  Path    URL   Repository Root   Repository UUID   Revision  54 Node Kind  directory Schedule  normal Last Changed Author   Last Changed Rev  54 Last Changed Date     You will get the REVISION from this

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lt  php      url    your repository here        output    svn info  url       echo   lt pre gt  output lt  pre gt      gt    You can get the output in XML like so    output    svn info  url --xml     If there is an error then the output will be directed to stderr  To capture stderr in your output use thusly     output    svn info  url 2 gt  amp 1

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svn log   head -10 on whatever directory that has a  svn folder

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If you want to analyse a local working copy  the best tool is svnversion  which comes with Subversion and produces output like 968 1000M  The documentation says      The version number will be a single   number if the working copy is single   revision  unmodified  not switched and   with an URL that matches the   TRAIL URL argument  If the working   copy is unusual the version number   will be more complex   4123 4168     mixed revision working copy 4168M         modified working copy 4123S         switched working copy 4123 4168MS   mixed revision  modified  switched working copy

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This will get just the revision number of the last changed revision    lt  php  REV      repo        url or directory  REV   svn info  repo --show-item last-changed-revision    gt    I hope this helps

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To really get the latest revision   head revision   number on your remote respository  use this   svn info -r  HEAD    grep Revision   egrep -o   0-9      Outputs for example   35669

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Someone else beat me to posting the answer about svnversion  which is definitely the best solution if you have a working copy  IIRC  it doesn t work with URLs    I ll add this  if you re on the server hosting SVN  the best way is to use the svnlook command   This is the command you use when writing a hook script to inspect the repository  and even the current transaction  in the case of pre-commit hooks    You can type svnlook help for details   You probably want to use the svnlook youngest command   Note that it requires direct access to the repo directory  so it must be used on the server

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svn info or svnversion won t take into consideration subdirectories  to find the latest  revision  of the live codebase the hacked way below worked for me - it might take a while to run   repo root  find      xargs -l svn info    grep  Revision      sort     Revision  86 Revision  86 Revision  89 Revision  90

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You can use either commands    1   gt  svn info   awk   Revision     print  2      gt returns the latest version   2   gt  svn log -l 1   grep   r 0-9       awk   print  1    svn log -l 1       gt  returns the latest version commit  grep   r 0-9       gt  greps the r4324  revision  number awk   print  1     gt  prints the match found

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Update  Subversion 1 9 will support a new command  svn youngest  that outputs only the latest revision number  The difference to  svnlook youngest  is that  svn youngest  also works remotely   http   subversion tigris org issues show bug cgi id 4299

[svn] Getting the last revision number in SVN?

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