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Solve the unnecessary-.po-file-regeneration problem once and for all
From: |
Jim Meyering |
Subject: |
Solve the unnecessary-.po-file-regeneration problem once and for all |
Date: |
Fri, 31 Aug 2007 23:18:23 +0200 |
I got tired of hearing my CPU fan spin for so long every time I ran
./bootstrap without --skip-po -- which led to lots of long-running
and completely pointless msgmerge processes during the next build.
I already had up-to-date .po files, so it shouldn't have clobbered the
merged ones with the just-downloaded ones. Here's the fix:
Solve the unnecessary-.po-file-regeneration problem once and for all.
* bootstrap (download_po_files): New function, renamed from
get_translations. Now, downloads, but doesn't update LINGUAS.
(update_po_files): New function.
diff --git a/bootstrap b/bootstrap
index e3425fa..4138204 100755
--- a/bootstrap
+++ b/bootstrap
@@ -252,7 +252,7 @@ gnulib_tool=$GNULIB_SRCDIR/gnulib-tool
# Get translations.
-get_translations() {
+download_po_files() {
subdir=$1
domain=$2
@@ -265,9 +265,35 @@ get_translations() {
(cd $subdir && rm -f dummy `ls | sed -n '/\.po/p'` &&
$WGET_COMMAND -r -l1 -nd -np -A.po $TP_URL/$domain)
;;
- esac &&
- ls "$subdir"/*.po 2>/dev/null |
- sed 's|.*/||; s|\.po$||' >"$subdir/LINGUAS"
+ esac
+}
+
+# Download .po files to $po_dir/.reference and copy only the new
+# or modified ones into $po_dir. Also update $po_dir/LINGUAS.
+update_po_files() {
+ # Directory containing primary .po files.
+ # Overwrite them only when we're sure a .po file is new.
+ po_dir=$1
+ domain=$2
+
+ # Download *.po files into this dir.
+ # Usually contains *.s1 checksum files.
+ ref_po_dir="$po_dir/.reference"
+
+ test -d $ref_po_dir || mkdir $ref_po_dir || return
+ download_po_files $ref_po_dir $domain \
+ && ls "$ref_po_dir"/*.po 2>/dev/null |
+ sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS"
+
+ for po in `cd $ref_po_dir && echo *.po|sed 's/\.po//g'`; do
+ new_po="$ref_po_dir/$po.po"
+ cksum_file="$ref_po_dir/$po.s1"
+ if ! sha1sum -c "$cksum_file" < "$new_po" > /dev/null; then
+ echo "updated $po_dir/$po.po..."
+ cp "$new_po" "$po_dir/$po.po" && sha1sum < "$new_po" > "$cksum_file"
+ fi
+ rm -f "$new_po"
+ done
}
case $SKIP_PO in
@@ -284,11 +310,11 @@ case $SKIP_PO in
esac
if test -d po; then
- get_translations po $package || exit
+ update_po_files po $package || exit
fi
if test -d runtime-po; then
- get_translations runtime-po $package-runtime || exit
+ update_po_files runtime-po $package-runtime || exit
fi;;
esac
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