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annotate: Convert all -| calls to use a helper open_pipe().

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When we settle on a solution for ActiveState's forking issues, all
compatibility checks can be handled inside this one function.

Also, fixed an abuse of global variables in the process of cleaning this up.

Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Ryan Anderson 2006-02-25 22:02:05 -05:00 committed by Junio C Hamano
parent 87475f4dfc
commit 6b3e21d603
1 changed files with 44 additions and 29 deletions
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73
git-annotate.perl
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@ -98,15 +98,15 @@ while (my $bound = pop @stack) {
push @revqueue, $head;
init_claim( defined $starting_rev ? $starting_rev : 'dirty');
unless (defined $starting_rev) {
open(DIFF,"-|","git","diff","-R", "HEAD", "--",$filename)
my $diff = open_pipe("git","diff","-R", "HEAD", "--",$filename)
or die "Failed to call git diff to check for dirty state: $!";
_git_diff_parse(*DIFF, $head, "dirty", (
_git_diff_parse($diff, $head, "dirty", (
'author' => gitvar_name("GIT_AUTHOR_IDENT"),
'author_date' => sprintf("%s +0000",time()),
)
);
close(DIFF);
close($diff);
}
handle_rev();
@ -172,20 +172,21 @@ sub handle_rev {
sub git_rev_list {
my ($rev, $file) = @_;
my $revlist;
if ($rev_file) {
open(P, '<' . $rev_file);
open($revlist, '<' . $rev_file);
} else {
open(P,"-|","git-rev-list","--parents","--remove-empty",$rev,"--",$file)
$revlist = open_pipe("git-rev-list","--parents","--remove-empty",$rev,"--",$file)
or die "Failed to exec git-rev-list: $!";
}
my @revs;
while(my $line = <P>) {
while(my $line = <$revlist>) {
chomp $line;
my ($rev, @parents) = split /\s+/, $line;
push @revs, [ $rev, @parents ];
}
close(P);
close($revlist);
printf("0 revs found for rev %s (%s)\n", $rev, $file) if (@revs == 0);
return @revs;
@ -194,22 +195,22 @@ sub git_rev_list {
sub find_parent_renames {
my ($rev, $file) = @_;
open(P,"-|","git-diff-tree", "-M50", "-r","--name-status", "-z","$rev")
my $patch = open_pipe("git-diff-tree", "-M50", "-r","--name-status", "-z","$rev")
or die "Failed to exec git-diff: $!";
local $/ = "\0";
my %bound;
my $junk = <P>;
while (my $change = <P>) {
my $junk = <$patch>;
while (my $change = <$patch>) {
chomp $change;
my $filename = <P>;
my $filename = <$patch>;
chomp $filename;
if ($change =~ m/^[AMD]$/ ) {
next;
} elsif ($change =~ m/^R/ ) {
my $oldfilename = $filename;
$filename = <P>;
$filename = <$patch>;
chomp $filename;
if ( $file eq $filename ) {
my $parent = git_find_parent($rev, $oldfilename);
@ -218,7 +219,7 @@ sub find_parent_renames {
}
}
}
close(P);
close($patch);
return \%bound;
}
@ -227,14 +228,14 @@ sub find_parent_renames {
sub git_find_parent {
my ($rev, $filename) = @_;
open(REVPARENT,"-|","git-rev-list","--remove-empty", "--parents","--max-count=1","$rev","--",$filename)
my $revparent = open_pipe("git-rev-list","--remove-empty", "--parents","--max-count=1","$rev","--",$filename)
or die "Failed to open git-rev-list to find a single parent: $!";
my $parentline = <REVPARENT>;
my $parentline = <$revparent>;
chomp $parentline;
my ($revfound,$parent) = split m/\s+/, $parentline;
close(REVPARENT);
close($revparent);
return $parent;
}
@ -245,13 +246,13 @@ sub git_find_parent {
sub git_diff_parse {
my ($parent, $rev, %revinfo) = @_;
open(DIFF,"-|","git-diff-tree","-M","-p",$rev,$parent,"--",
my $diff = open_pipe("git-diff-tree","-M","-p",$rev,$parent,"--",
$revs{$rev}{'filename'}, $revs{$parent}{'filename'})
or die "Failed to call git-diff for annotation: $!";
_git_diff_parse(*DIFF, $parent, $rev, %revinfo);
_git_diff_parse($diff, $parent, $rev, %revinfo);
close(DIFF);
close($diff);
}
sub _git_diff_parse {
@ -264,7 +265,7 @@ sub _git_diff_parse {
my $gotheader = 0;
my ($remstart);
my ($hunk_start, $hunk_index);
while(<DIFF>) {
while(<$diff>) {
chomp;
if (m/^@@ -(\d+),(\d+) \+(\d+),(\d+)/) {
$remstart = $1;
@ -335,15 +336,15 @@ sub git_cat_file {
my $blob = git_ls_tree($rev, $filename);
open(C,"-|","git","cat-file", "blob", $blob)
my $catfile = open_pipe("git","cat-file", "blob", $blob)
or die "Failed to git-cat-file blob $blob (rev $rev, file $filename): " . $!;
my @lines;
while(<C>) {
while(<$catfile>) {
chomp;
push @lines, $_;
}
close(C);
close($catfile);
return @lines;
}
@ -351,15 +352,15 @@ sub git_cat_file {
sub git_ls_tree {
my ($rev, $filename) = @_;
open(T,"-|","git","ls-tree",$rev,$filename)
my $lstree = open_pipe("git","ls-tree",$rev,$filename)
or die "Failed to call git ls-tree: $!";
my ($mode, $type, $blob, $tfilename);
while(<T>) {
while(<$lstree>) {
($mode, $type, $blob, $tfilename) = split(/\s+/, $_, 4);
last if ($tfilename eq $filename);
}
close(T);
close($lstree);
return $blob if $filename eq $filename;
die "git-ls-tree failed to find blob for $filename";
@ -379,11 +380,11 @@ sub claim_line {
sub git_commit_info {
my ($rev) = @_;
open(COMMIT, "-|","git-cat-file", "commit", $rev)
my $commit = open_pipe("git-cat-file", "commit", $rev)
or die "Failed to call git-cat-file: $!";
my %info;
while(<COMMIT>) {
while(<$commit>) {
chomp;
last if (length $_ == 0);
@ -397,7 +398,7 @@ sub git_commit_info {
$info{'committer_date'} = $3;
}
}
close(COMMIT);
close($commit);
return %info;
}
@ -430,3 +431,17 @@ sub gitvar_name {
return join(' ', @field[0...(@field-4)]);
}
sub open_pipe {
my (@execlist) = @_;
my $pid = open my $kid, "-|";
defined $pid or die "Cannot fork: $!";
unless ($pid) {
exec @execlist;
die "Cannot exec @execlist: $!";
}
return $kid;
}