detect svn changes in a .bat

Question

I have a .bat and inside the .bat i would like to execute a special code if there's some modification inside the svn repository (for example, compile).

Answer 1

Are you wanting this to be reactive? Or, on-demand?

For reactive, see hooks. The script will have to be named according to it's purpose: pre-commit.bat, post-commit.bat. The scripts are called as: [script] [repos-path] [revision-number]

For, on-demand:

• Working Copy
  • svn log
  • svn st
  • svn diff
  • svn proplist
• Repository
  • svnlook author
  • svnlook changed
  • svnlook date
  • svnlook diff
  • svnlook history

---

Example:

svn st "C:\path\to\working\directory\" >> C:\path\to\working\project.log

Every time you run the BAT, it'll add the st output to project.log. Adjust as needed.

Answer 2

For Win 2000 and later, this would assign the last output row from the svn status commmand to the svnOut variable and then test if the variable contains anything:

@echo off
set svnOut=
set svnDir=C:Your\path\to\svn\dir\to\check
for /F "tokens=*" %%I in ('svn status %svnDir%') do set svnOut=%%I

if "%svnOut%"==""  (
    echo No changes
) else (
    echo Changed files!
)

Why there is a line like this

set svnOut=

you have to figure out yourself. ;-)

Answer 3

Ok, the solution I found with the help of Tooony:

set vHEAD = 0
set vBASE = 0

set svnDir=<path to local svn directory>

for /F "tokens=1,2" %%I in ('svn info -r HEAD %svnDir%') do if "%%I"=="Revision:" set vHEAD=%%J
for /F "tokens=1,2" %%I in ('svn info -r BASE %svnDir%') do if "%%I"=="Revision:" set vBASE=%%J

if "%vBASE%"=="%vHEAD"  (
    echo No changes
) else (
    echo Changed files!
)

Answer 4

Have your .bat execute svnversion (if you're using Subversion) or SvnWCRev.exe (if you're using TortoiseSVN) against the top-most level of your working copy.

Both output if your working copy has been modified.

svnversion appends a "M" to its output. SvnWCRev.exe will print a line of text that the WC has been modified.