[sysadmin-bin: 35/168] Add a port of the svn pre-commit .po file check

[Andrea Veri <av src gnome org>]

commit b6cc3e8656fd96e26da8fd2a5e9acec7d65d8cf7
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Tue Mar 3 15:15:55 2009 -0500

    Add a port of the svn pre-commit .po file check
    
    pre-receive-check-po: Port of the .po-file checking script used
      for svn.
    
    gnome-pre-receive: Wrapper pre-receive hook along the lines of
      gnome-post-receive. This is the pre-receive hook for all modules.

 gnome-pre-receive    |   27 ++++++++++++
 pre-receive-check-po |  109 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 136 insertions(+), 0 deletions(-)
---
diff --git a/gnome-pre-receive b/gnome-pre-receive
new file mode 100755
index 0000000..3081db0
--- /dev/null
+++ b/gnome-pre-receive
@@ -0,0 +1,27 @@
+#!/bin/bash
+#
+# Standard GNOME pre-receive hook.
+#
+# The "pre-receive" hook is invoked just before receive-pack starts to
+# update refs on the remote repository. Its exit status determines the 
+# success or failure of the update.
+
+BINDIR=/home/admin/gitadmin-bin
+
+# If the committing user has a homedir with a .gitconfig in it, it we
+# don't want that to affect our operation. (Should this just be handled
+# in run-git-or-special-cmd?)
+GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
+GIT_CONFIG="${GIT_DIR}/config"
+export GIT_CONFIG
+
+while read oldrev newrev refname; do
+    # Unlike the gnome-post-receive script, where we play fancy games
+    # with 'tee', we invoke the different pre-receive hooks separately
+    # for each ref that is updated. This keeps things simple and
+    # reliable and none of the scripts need all the refs at once.
+
+    if ! $BINDIR/pre-receive-check-po $oldrev $newrev $refname ; then
+	exit 1
+    fi
+done
diff --git a/pre-receive-check-po b/pre-receive-check-po
new file mode 100755
index 0000000..e6db14b
--- /dev/null
+++ b/pre-receive-check-po
@@ -0,0 +1,109 @@
+#!/bin/bash
+
+check_pos() {
+    oldrev=$1
+    newrev=$2
+    refname=$3
+
+    branchname=${refname#refs/heads/}
+    if [ "$branchname" = "$refname" ] ; then
+        # not a branch update
+	return
+    fi
+
+    branch_message=
+    if [ "x$branchname" != "master" ] ; then
+	branch_message=" (When updating branch '$branchname'.)"
+    fi
+
+    git diff-tree -r $oldrev $newrev | (
+	while read srcmode destmode srcsha destsha status srcpath destpath ; do
+	    if [ $status = 'D' ] ; then
+		continue # deleted
+	    fi
+
+            # destpath only present for copies/renames
+	    if [ x"$destpath" = x ] ; then
+		destpath=$srcpath
+	    fi
+
+	    case "$destpath" in
+		*.po)
+		    ;;
+		*)
+		    continue
+		    ;;
+	    esac
+
+	    basename=`basename $destpath`
+
+	    # Strip colon from the source mode
+	    srcmode=${srcmode#:}
+
+	    # gettext-0.14.6 on git.gnome.org isn't new enough to handle
+            # features such as msgctx
+            # dash_c="-c"
+            dash_c=
+
+	    # Parse the file and check for errors
+	    result=`git cat-file blob "$newrev:$destpath" | msgfmt $dash_c -o /dev/null - 2>&1`
+	    if [ $? -gt 0 ]; then
+		cat <<EOF >&2
+
+The following translation (.po) file appears to be invalid.$branch_message
+
+$destpath
+
+The results of the validation follow. Please correct the errors on the line numbers mentioned and try to push again.
+
+$result
+
+To check this locally before attempting to push again, you can use the following command:
+
+msgfmt $dash_c $basename
+
+After making fixes, modify your commit to include them, by doing:
+
+git add $basename
+git commit --amend
+
+If you have any further problems or questions, please contact the GNOME Translation Project mailing list <gnome-i18n gnome org>. Thank you.
+
+EOF
+		exit 1
+	    fi
+
+	    # Check for the absence of an executable flag
+	    if expr "$destmode" : ".*\([1357]..\|[1357].\|[1357]\)$" > /dev/null 2>& 1; then
+		cat <<EOF >&2
+
+The following translation file appears to have its executable flag set.$branch_message
+
+$destpath
+
+Translation files should not be executable. Please remove the flag and try to push again. The following commands may help:
+
+chmod a-x $basename
+git add $basename
+git commit --amend
+
+If you have any further problems or questions, please contact the GNOME Translation Project mailing list <gnome-i18n gnome org>. Thank you.
+
+EOF
+		exit 1
+	    fi
+	done
+   )
+}
+
+if [ $# = 3 ] ; then
+    if ! check_pos $@ ; then
+	exit 1
+    fi
+else
+    while read oldrev newrev refname; do
+	if ! check_pos $oldrev $newrev $refname ; then
+	    exit 1
+	fi
+    done
+fi