-#!/bin/sh
+=head1 NAME
-# this script is used to regenerate a number of special build files
-# based on either information contained in a file called .patch or
-# directly from git.
-# The files involved are:
-# .patchnum # information about the current checkout
-# lib/Config_git.pl # holds some special configure settings related to git
-# unpushed.h # header file used by patchlevel.h to store unpushed commits
+make_patchnum.pl - make patchnum
-existing_patchnum=$(cat .patchnum 2>/dev/null)
-existing_config=$(cat lib/Config_git.pl 2>/dev/null)
-existing_unpushed=$(cat unpushed.h 2>/dev/null)
+=head1 SYNOPSIS
-unpushed_commits='/*no-op*/'
-if [ -s ".patch" ] ; then
- # this is the minimal expectation for the
- read branch snapshot_created commit_id describe < .patch
- changed=""
- extra_info="git_snapshot_date='$snapshot_created'"
- commit_title='Snapshot of:'
-elif [ -d ".git" ]; then
- branch=$(git branch | awk 'BEGIN{ORS=""} /\*/ { print $2 }')
- test -n "$branch" && remote=$(git config branch.$branch.remote)
- commit_id=$(git rev-parse HEAD)
- changed=$(git diff-index --name-only HEAD)
- describe=$(git describe --tags)
- commit_created=$(git log -1 --pretty='format:%ci')
- extra_info="git_commit_date='$commit_created'"
- if [ -n "$branch" ] && [ -n "$remote" ]; then
- unpushed_commit_list=$(git cherry $remote/$branch | awk 'BEGIN{ORS=","} /+/ {print $2}' | sed -e 's/,$//')
- unpushed_commits=$(git cherry $remote/$branch | awk 'BEGIN{ORS="\t\\\n"} /+/ {print ",\"" $2 "\""}')
+...
- if [ -n "$unpushed_commits" ]; then
- commit_title="Local Commit:"
- ancestor=`git rev-parse $remote/$branch`
- extra_info="$extra_info
-git_ancestor='$ancestor'
-git_unpushed='$unpushed_commit_list'"
- fi
-
- fi
-else
- cat <<SNDOGS
-Something is wrong with your source tree. You should
-either have a .git directory and a functional git toolset
-OR should have a .patch file in the source tree. Please
-report the particulars of this situation to
-perl5-porters@perl.org.
-SNDOGS
- exit 2
-fi
+=cut
+
+use strict;
+use warnings;
+no warnings 'uninitialized';
-# Set up defaults for various values
-new_patchnum="describe: $describe"
-if [ -n "$changed" ]; then
- changed="true"
- commit_title="Derived from:"
- new_patchnum="$new_patchnum
-status: uncommitted-changes"
-fi
-test -z "$commit_title" && commit_title='Commit id:'
+my $existing_patchnum = read_file('.patchnum');
+my $existing_config = read_file('lib/Config_git.pl');
+my $existing_unpushed = read_file('unpushed.h');
-new_unpushed=$(cat <<EOFTEXT
+my $unpushed_commits = '/*no-op*/';
+my ($read, $branch, $snapshot_created, $commit_id, $describe);
+my ($changed, $extra_info, $commit_title, $new_patchnum);
+if (-s path_to('.patch')) {
+ open my $fh, '<', path_to('.patch') or die "Failed to read .patch:$!";
+ ($read, $branch, $snapshot_created, $commit_id, $describe) = map { chomp $_; $_ } <$fh>;
+ $changed = '';
+ $extra_info = "git_snapshot_date='$snapshot_created'";
+ $commit_title = "Snapshot of:";
+}
+elsif (-d path_to('.git')) {
+ # git branch | awk 'BEGIN{ORS=""} /\*/ { print $2 }'
+ $branch = join "", map { (split /\s/, $_)[1] }
+ grep {/\*/} split /\n/, backtick('git branch');
+ my $remote;
+ if (length $branch) {
+ $remote = backtick("git config branch.$branch.remote");
+ }
+ $commit_id = backtick("git rev-parse HEAD");
+ $describe = backtick("git describe --tags");
+ my $commit_created = backtick(qq{git log -1 --pretty="format:%ci"});
+ $new_patchnum = "describe: $describe";
+ $extra_info = "git_commit_date='$commit_created'";
+ if (length $branch && length $remote) {
+ # git cherry $remote/$branch | awk 'BEGIN{ORS=","} /\+/ {print $2}' | sed -e 's/,$//'
+ my $unpushed_commit_list =
+ join ",", map { (split /\s/, $_)[1] }
+ grep {/\+/} split /\n/, backtick("git cherry $remote/$branch");
+ # git cherry $remote/$branch | awk 'BEGIN{ORS="\t\\\\\n"} /\+/ {print ",\"" $2 "\""}'
+ $unpushed_commits =
+ join "", map { ',"'.(split /\s/, $_)[1].'"'."\t\\\n" }
+ grep {/\+/} split /\n/, backtick("git cherry $remote/$branch");
+ if (length $unpushed_commits) {
+ $commit_title = "Local Commit:";
+ my $ancestor = backtick("git rev-parse $remote/$branch");
+ $extra_info = "$extra_info
+git_ancestor='$ancestor'
+git_unpushed='$unpushed_commit_list'";
+ }
+ }
+ if (length $changed) {
+ $changed = 'true';
+ $commit_title = "Derived from:";
+ $new_patchnum = "$new_patchnum
+status: uncommitted-changes";
+ }
+ if (not length $commit_title) {
+ $commit_title = "Commit id:";
+ }
+}
+
+my $new_unpushed =<<"EOFTEXT";
/*********************************************************************
-* WARNING: unpushed.h is automatically generated by make_patchnum.sh *
-* DO NOT EDIT DIRECTLY - edit make_patchnum.sh instead *
+* WARNING: unpushed.h is automatically generated by make_patchnum.pl *
+* DO NOT EDIT DIRECTLY - edit make_patchnum.pl instead *
*********************************************************************/
#define PERL_GIT_UNPUSHED_COMMITS $unpushed_commits
/*leave-this-comment*/
EOFTEXT
-)
-new_config=$(cat <<EOFDATA
+
+my $new_config =<<"EOFDATA";
#################################################################
-# WARNING: lib/Config_git.pl is generated by make_patchnum.sh #
-# DO NOT EDIT DIRECTLY - edit make_patchnum.sh instead #
+# WARNING: lib/Config_git.pl is generated by make_patchnum.pl #
+# DO NOT EDIT DIRECTLY - edit make_patchnum.pl instead #
#################################################################
\$Config::Git_Data=<<'ENDOFGIT';
git_commit_id='$commit_id'
$extra_info
ENDOFGIT
EOFDATA
-)
+
# only update the files if necessary, other build product depends on these files
-if [ "$existing_patchnum" != "$new_patchnum" ] || [ "$new_config" != "$existing_config" ] || [ "$existing_unpushed" != "$new_unpushed" ]; then
- echo "Updating .patchnum and lib/Config_git.pl"
- echo "$new_patchnum" > .patchnum
- echo "$new_config" > lib/Config_git.pl
- echo "$new_unpushed" > unpushed.h
-else
- echo "Reusing .patchnum and lib/Config_git.pl"
-fi
+if (( $existing_patchnum ne $new_patchnum ) || ( $existing_config ne $new_config ) || ( $existing_unpushed ne $new_unpushed )) {
+ print "Updating .patchnum and lib/Config_git.pl\n";
+ write_file('.patchnum', $new_patchnum);
+ write_file('lib/Config_git.pl', $new_config);
+ write_file('unpushed.h', $new_unpushed);
+}
+else {
+ print "Reusing .patchnum and lib/Config_git.pl\n"
+}
+
+sub path_to { "../$_[0]" } # use $_[0] if this'd be placed in toplevel.
+
+sub read_file {
+ my $file = shift;
+ return unless -f path_to($file);
+ open my $fh, '<', path_to($file) or die "Failed to open $file:$!";
+ return do { local $/; <$fh> };
+}
+
+sub write_file {
+ my ($file, $content) = @_;
+ open my $fh, '>', path_to($file) or die "Failed to open $file:$!";
+ print $fh $content;
+ close $fh;
+}
+
+sub backtick {
+ my $command = shift;
+ my $result = `$command`;
+ chomp $result;
+ return $result;
+}
projects / p5sagit/p5-mst-13.2.git / commitdiff