mirror of
https://github.com/git/git.git
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Merge branch 'th/difftool-diffall'
Rolls the two-directory-diff logic from diffall script (in contrib/) into "git difftool" framework. By Tim Henigan * th/difftool-diffall: difftool: print list of valid tools with '--tool-help' difftool: teach difftool to handle directory diffs difftool: eliminate setup_environment function difftool: stop appending '.exe' to git difftool: remove explicit change of PATH difftool: exit(0) when usage is printed difftool: add '--no-gui' option difftool: parse options using Getopt::Long
This commit is contained in:
Junio C Hamano
commit
cae0977221
@ -19,6 +19,12 @@ linkgit:git-diff[1].
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OPTIONS
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-------
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-d::
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--dir-diff::
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Copy the modified files to a temporary location and perform
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a directory diff on them. This mode never prompts before
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launching the diff tool.
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-y::
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--no-prompt::
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Do not prompt before launching a diff tool.
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@ -30,11 +36,9 @@ OPTIONS
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-t <tool>::
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--tool=<tool>::
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Use the diff tool specified by <tool>.
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Valid diff tools are:
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araxis, bc3, deltawalker, diffuse, emerge, ecmerge, gvimdiff,
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kdiff3, kompare, meld, opendiff, p4merge, tkdiff, vimdiff and
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xxdiff.
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Use the diff tool specified by <tool>. Valid values include
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emerge, kompare, meld, and vimdiff. Run `git difftool --tool-help`
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for the list of valid <tool> settings.
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+
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If a diff tool is not specified, 'git difftool'
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will use the configuration variable `diff.tool`. If the
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@ -62,6 +66,9 @@ of the diff post-image. `$MERGED` is the name of the file which is
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being compared. `$BASE` is provided for compatibility
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with custom merge tool commands and has the same value as `$MERGED`.
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--tool-help::
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Print a list of diff tools that may be used with `--tool`.
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-x <command>::
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--extcmd=<command>::
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Specify a custom command for viewing diffs.
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@ -73,9 +73,16 @@ then
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fi
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fi
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# Launch the merge tool on each path provided by 'git diff'
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while test $# -gt 6
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do
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launch_merge_tool "$1" "$2" "$5"
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shift 7
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done
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if test -n "$GIT_DIFFTOOL_DIRDIFF"
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then
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LOCAL="$1"
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REMOTE="$2"
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run_merge_tool "$merge_tool" false
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else
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# Launch the merge tool on each path provided by 'git diff'
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while test $# -gt 6
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do
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launch_merge_tool "$1" "$2" "$5"
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shift 7
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done
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fi
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@ -1,121 +1,361 @@
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#!/usr/bin/env perl
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#!/usr/bin/perl
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# Copyright (c) 2009, 2010 David Aguilar
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# Copyright (c) 2012 Tim Henigan
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#
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# This is a wrapper around the GIT_EXTERNAL_DIFF-compatible
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# git-difftool--helper script.
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#
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# This script exports GIT_EXTERNAL_DIFF and GIT_PAGER for use by git.
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# GIT_DIFFTOOL_NO_PROMPT, GIT_DIFFTOOL_PROMPT, and GIT_DIFF_TOOL
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# are exported for use by git-difftool--helper.
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# The GIT_DIFF* variables are exported for use by git-difftool--helper.
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#
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# Any arguments that are unknown to this script are forwarded to 'git diff'.
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use 5.008;
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use strict;
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use warnings;
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use Cwd qw(abs_path);
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use File::Basename qw(dirname);
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use File::Copy;
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use File::Find;
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use File::stat;
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use File::Path qw(mkpath);
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use File::Temp qw(tempdir);
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use Getopt::Long qw(:config pass_through);
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use Git;
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require Git;
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my $DIR = abs_path(dirname($0));
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my @tools;
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my @working_tree;
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my $rc;
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my $repo = Git->repository();
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my $repo_path = $repo->repo_path();
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sub usage
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{
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my $exitcode = shift;
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print << 'USAGE';
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usage: git difftool [-t|--tool=<tool>] [-x|--extcmd=<cmd>]
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[-y|--no-prompt] [-g|--gui]
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usage: git difftool [-t|--tool=<tool>] [--tool-help]
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[-x|--extcmd=<cmd>]
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[-g|--gui] [--no-gui]
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[--prompt] [-y|--no-prompt]
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[-d|--dir-diff]
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['git diff' options]
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USAGE
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exit 1;
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exit($exitcode);
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}
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sub setup_environment
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sub find_worktree
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{
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$ENV{PATH} = "$DIR:$ENV{PATH}";
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# Git->repository->wc_path() does not honor changes to the working
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# tree location made by $ENV{GIT_WORK_TREE} or the 'core.worktree'
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# config variable.
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my $worktree;
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my $env_worktree = $ENV{GIT_WORK_TREE};
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my $core_worktree = Git::config('core.worktree');
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if (defined($env_worktree) and (length($env_worktree) > 0)) {
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$worktree = $env_worktree;
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} elsif (defined($core_worktree) and (length($core_worktree) > 0)) {
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$worktree = $core_worktree;
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} else {
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$worktree = $repo->wc_path();
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}
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return $worktree;
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}
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my $workdir = find_worktree();
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sub filter_tool_scripts
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{
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if (-d $_) {
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if ($_ ne ".") {
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# Ignore files in subdirectories
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$File::Find::prune = 1;
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}
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} else {
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if ((-f $_) && ($_ ne "defaults")) {
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push(@tools, $_);
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}
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}
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}
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sub print_tool_help
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{
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my ($cmd, @found, @notfound);
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my $gitpath = Git::exec_path();
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find(\&filter_tool_scripts, "$gitpath/mergetools");
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foreach my $tool (@tools) {
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$cmd = "TOOL_MODE=diff";
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$cmd .= ' && . "$(git --exec-path)/git-mergetool--lib"';
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$cmd .= " && get_merge_tool_path $tool >/dev/null 2>&1";
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$cmd .= " && can_diff >/dev/null 2>&1";
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if (system('sh', '-c', $cmd) == 0) {
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push(@found, $tool);
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} else {
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push(@notfound, $tool);
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}
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}
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print "'git difftool --tool=<tool>' may be set to one of the following:\n";
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print "\t$_\n" for (sort(@found));
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print "\nThe following tools are valid, but not currently available:\n";
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print "\t$_\n" for (sort(@notfound));
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print "\nNOTE: Some of the tools listed above only work in a windowed\n";
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print "environment. If run in a terminal-only session, they will fail.\n";
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exit(0);
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}
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sub setup_dir_diff
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{
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# Run the diff; exit immediately if no diff found
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# 'Repository' and 'WorkingCopy' must be explicitly set to insure that
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# if $GIT_DIR and $GIT_WORK_TREE are set in ENV, they are actually used
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# by Git->repository->command*.
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my $diffrepo = Git->repository(Repository => $repo_path, WorkingCopy => $workdir);
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my $diffrtn = $diffrepo->command_oneline('diff', '--raw', '--no-abbrev', '-z', @ARGV);
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exit(0) if (length($diffrtn) == 0);
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# Setup temp directories
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my $tmpdir = tempdir('git-diffall.XXXXX', CLEANUP => 1, TMPDIR => 1);
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my $ldir = "$tmpdir/left";
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my $rdir = "$tmpdir/right";
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mkpath($ldir) or die $!;
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mkpath($rdir) or die $!;
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# Build index info for left and right sides of the diff
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my $submodule_mode = '160000';
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my $symlink_mode = '120000';
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my $null_mode = '0' x 6;
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my $null_sha1 = '0' x 40;
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my $lindex = '';
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my $rindex = '';
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my %submodule;
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my %symlink;
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my @rawdiff = split('\0', $diffrtn);
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my $i = 0;
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while ($i < $#rawdiff) {
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if ($rawdiff[$i] =~ /^::/) {
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print "Combined diff formats ('-c' and '--cc') are not supported in directory diff mode.\n";
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exit(1);
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}
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my ($lmode, $rmode, $lsha1, $rsha1, $status) = split(' ', substr($rawdiff[$i], 1));
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my $src_path = $rawdiff[$i + 1];
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my $dst_path;
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if ($status =~ /^[CR]/) {
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$dst_path = $rawdiff[$i + 2];
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$i += 3;
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} else {
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$dst_path = $src_path;
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$i += 2;
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}
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if (($lmode eq $submodule_mode) or ($rmode eq $submodule_mode)) {
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$submodule{$src_path}{left} = $lsha1;
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if ($lsha1 ne $rsha1) {
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$submodule{$dst_path}{right} = $rsha1;
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} else {
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$submodule{$dst_path}{right} = "$rsha1-dirty";
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}
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next;
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}
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if ($lmode eq $symlink_mode) {
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$symlink{$src_path}{left} = $diffrepo->command_oneline('show', "$lsha1");
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}
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if ($rmode eq $symlink_mode) {
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$symlink{$dst_path}{right} = $diffrepo->command_oneline('show', "$rsha1");
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}
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if (($lmode ne $null_mode) and ($status !~ /^C/)) {
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$lindex .= "$lmode $lsha1\t$src_path\0";
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}
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if ($rmode ne $null_mode) {
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if ($rsha1 ne $null_sha1) {
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$rindex .= "$rmode $rsha1\t$dst_path\0";
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} else {
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push(@working_tree, $dst_path);
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}
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}
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}
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# If $GIT_DIR is not set prior to calling 'git update-index' and
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# 'git checkout-index', then those commands will fail if difftool
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# is called from a directory other than the repo root.
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my $must_unset_git_dir = 0;
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if (not defined($ENV{GIT_DIR})) {
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$must_unset_git_dir = 1;
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$ENV{GIT_DIR} = $repo_path;
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}
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# Populate the left and right directories based on each index file
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my ($inpipe, $ctx);
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$ENV{GIT_INDEX_FILE} = "$tmpdir/lindex";
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($inpipe, $ctx) = $repo->command_input_pipe(qw/update-index -z --index-info/);
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print($inpipe $lindex);
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$repo->command_close_pipe($inpipe, $ctx);
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$rc = system('git', 'checkout-index', '--all', "--prefix=$ldir/");
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exit($rc | ($rc >> 8)) if ($rc != 0);
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$ENV{GIT_INDEX_FILE} = "$tmpdir/rindex";
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($inpipe, $ctx) = $repo->command_input_pipe(qw/update-index -z --index-info/);
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print($inpipe $rindex);
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||||
$repo->command_close_pipe($inpipe, $ctx);
|
||||
$rc = system('git', 'checkout-index', '--all', "--prefix=$rdir/");
|
||||
exit($rc | ($rc >> 8)) if ($rc != 0);
|
||||
|
||||
# If $GIT_DIR was explicitly set just for the update/checkout
|
||||
# commands, then it should be unset before continuing.
|
||||
delete($ENV{GIT_DIR}) if ($must_unset_git_dir);
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||||
delete($ENV{GIT_INDEX_FILE});
|
||||
|
||||
# Changes in the working tree need special treatment since they are
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||||
# not part of the index
|
||||
for my $file (@working_tree) {
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||||
my $dir = dirname($file);
|
||||
unless (-d "$rdir/$dir") {
|
||||
mkpath("$rdir/$dir") or die $!;
|
||||
}
|
||||
copy("$workdir/$file", "$rdir/$file") or die $!;
|
||||
chmod(stat("$workdir/$file")->mode, "$rdir/$file") or die $!;
|
||||
}
|
||||
|
||||
# Changes to submodules require special treatment. This loop writes a
|
||||
# temporary file to both the left and right directories to show the
|
||||
# change in the recorded SHA1 for the submodule.
|
||||
for my $path (keys %submodule) {
|
||||
if (defined($submodule{$path}{left})) {
|
||||
write_to_file("$ldir/$path", "Subproject commit $submodule{$path}{left}");
|
||||
}
|
||||
if (defined($submodule{$path}{right})) {
|
||||
write_to_file("$rdir/$path", "Subproject commit $submodule{$path}{right}");
|
||||
}
|
||||
}
|
||||
|
||||
# Symbolic links require special treatment. The standard "git diff"
|
||||
# shows only the link itself, not the contents of the link target.
|
||||
# This loop replicates that behavior.
|
||||
for my $path (keys %symlink) {
|
||||
if (defined($symlink{$path}{left})) {
|
||||
write_to_file("$ldir/$path", $symlink{$path}{left});
|
||||
}
|
||||
if (defined($symlink{$path}{right})) {
|
||||
write_to_file("$rdir/$path", $symlink{$path}{right});
|
||||
}
|
||||
}
|
||||
|
||||
return ($ldir, $rdir);
|
||||
}
|
||||
|
||||
sub write_to_file
|
||||
{
|
||||
my $path = shift;
|
||||
my $value = shift;
|
||||
|
||||
# Make sure the path to the file exists
|
||||
my $dir = dirname($path);
|
||||
unless (-d "$dir") {
|
||||
mkpath("$dir") or die $!;
|
||||
}
|
||||
|
||||
# If the file already exists in that location, delete it. This
|
||||
# is required in the case of symbolic links.
|
||||
unlink("$path");
|
||||
|
||||
open(my $fh, '>', "$path") or die $!;
|
||||
print($fh $value);
|
||||
close($fh);
|
||||
}
|
||||
|
||||
# parse command-line options. all unrecognized options and arguments
|
||||
# are passed through to the 'git diff' command.
|
||||
my ($difftool_cmd, $dirdiff, $extcmd, $gui, $help, $prompt, $tool_help);
|
||||
GetOptions('g|gui!' => \$gui,
|
||||
'd|dir-diff' => \$dirdiff,
|
||||
'h' => \$help,
|
||||
'prompt!' => \$prompt,
|
||||
'y' => sub { $prompt = 0; },
|
||||
't|tool:s' => \$difftool_cmd,
|
||||
'tool-help' => \$tool_help,
|
||||
'x|extcmd:s' => \$extcmd);
|
||||
|
||||
if (defined($help)) {
|
||||
usage(0);
|
||||
}
|
||||
if (defined($tool_help)) {
|
||||
print_tool_help();
|
||||
}
|
||||
if (defined($difftool_cmd)) {
|
||||
if (length($difftool_cmd) > 0) {
|
||||
$ENV{GIT_DIFF_TOOL} = $difftool_cmd;
|
||||
} else {
|
||||
print "No <tool> given for --tool=<tool>\n";
|
||||
usage(1);
|
||||
}
|
||||
}
|
||||
if (defined($extcmd)) {
|
||||
if (length($extcmd) > 0) {
|
||||
$ENV{GIT_DIFFTOOL_EXTCMD} = $extcmd;
|
||||
} else {
|
||||
print "No <cmd> given for --extcmd=<cmd>\n";
|
||||
usage(1);
|
||||
}
|
||||
}
|
||||
if ($gui) {
|
||||
my $guitool = '';
|
||||
$guitool = Git::config('diff.guitool');
|
||||
if (length($guitool) > 0) {
|
||||
$ENV{GIT_DIFF_TOOL} = $guitool;
|
||||
}
|
||||
}
|
||||
|
||||
# In directory diff mode, 'git-difftool--helper' is called once
|
||||
# to compare the a/b directories. In file diff mode, 'git diff'
|
||||
# will invoke a separate instance of 'git-difftool--helper' for
|
||||
# each file that changed.
|
||||
if (defined($dirdiff)) {
|
||||
my ($a, $b) = setup_dir_diff();
|
||||
if (defined($extcmd)) {
|
||||
$rc = system($extcmd, $a, $b);
|
||||
} else {
|
||||
$ENV{GIT_DIFFTOOL_DIRDIFF} = 'true';
|
||||
$rc = system('git', 'difftool--helper', $a, $b);
|
||||
}
|
||||
|
||||
exit($rc | ($rc >> 8)) if ($rc != 0);
|
||||
|
||||
# If the diff including working copy files and those
|
||||
# files were modified during the diff, then the changes
|
||||
# should be copied back to the working tree
|
||||
for my $file (@working_tree) {
|
||||
copy("$b/$file", "$workdir/$file") or die $!;
|
||||
chmod(stat("$b/$file")->mode, "$workdir/$file") or die $!;
|
||||
}
|
||||
} else {
|
||||
if (defined($prompt)) {
|
||||
if ($prompt) {
|
||||
$ENV{GIT_DIFFTOOL_PROMPT} = 'true';
|
||||
} else {
|
||||
$ENV{GIT_DIFFTOOL_NO_PROMPT} = 'true';
|
||||
}
|
||||
}
|
||||
|
||||
$ENV{GIT_PAGER} = '';
|
||||
$ENV{GIT_EXTERNAL_DIFF} = 'git-difftool--helper';
|
||||
|
||||
# ActiveState Perl for Win32 does not implement POSIX semantics of
|
||||
# exec* system call. It just spawns the given executable and finishes
|
||||
# the starting program, exiting with code 0.
|
||||
# system will at least catch the errors returned by git diff,
|
||||
# allowing the caller of git difftool better handling of failures.
|
||||
my $rc = system('git', 'diff', @ARGV);
|
||||
exit($rc | ($rc >> 8));
|
||||
}
|
||||
|
||||
sub exe
|
||||
{
|
||||
my $exe = shift;
|
||||
if ($^O eq 'MSWin32' || $^O eq 'msys') {
|
||||
return "$exe.exe";
|
||||
}
|
||||
return $exe;
|
||||
}
|
||||
|
||||
sub generate_command
|
||||
{
|
||||
my @command = (exe('git'), 'diff');
|
||||
my $skip_next = 0;
|
||||
my $idx = -1;
|
||||
my $prompt = '';
|
||||
for my $arg (@ARGV) {
|
||||
$idx++;
|
||||
if ($skip_next) {
|
||||
$skip_next = 0;
|
||||
next;
|
||||
}
|
||||
if ($arg eq '-t' || $arg eq '--tool') {
|
||||
usage() if $#ARGV <= $idx;
|
||||
$ENV{GIT_DIFF_TOOL} = $ARGV[$idx + 1];
|
||||
$skip_next = 1;
|
||||
next;
|
||||
}
|
||||
if ($arg =~ /^--tool=/) {
|
||||
$ENV{GIT_DIFF_TOOL} = substr($arg, 7);
|
||||
next;
|
||||
}
|
||||
if ($arg eq '-x' || $arg eq '--extcmd') {
|
||||
usage() if $#ARGV <= $idx;
|
||||
$ENV{GIT_DIFFTOOL_EXTCMD} = $ARGV[$idx + 1];
|
||||
$skip_next = 1;
|
||||
next;
|
||||
}
|
||||
if ($arg =~ /^--extcmd=/) {
|
||||
$ENV{GIT_DIFFTOOL_EXTCMD} = substr($arg, 9);
|
||||
next;
|
||||
}
|
||||
if ($arg eq '-g' || $arg eq '--gui') {
|
||||
eval {
|
||||
my $tool = Git::command_oneline('config',
|
||||
'diff.guitool');
|
||||
if (length($tool)) {
|
||||
$ENV{GIT_DIFF_TOOL} = $tool;
|
||||
}
|
||||
};
|
||||
next;
|
||||
}
|
||||
if ($arg eq '-y' || $arg eq '--no-prompt') {
|
||||
$prompt = 'no';
|
||||
next;
|
||||
}
|
||||
if ($arg eq '--prompt') {
|
||||
$prompt = 'yes';
|
||||
next;
|
||||
}
|
||||
if ($arg eq '-h') {
|
||||
usage();
|
||||
}
|
||||
push @command, $arg;
|
||||
}
|
||||
if ($prompt eq 'yes') {
|
||||
$ENV{GIT_DIFFTOOL_PROMPT} = 'true';
|
||||
} elsif ($prompt eq 'no') {
|
||||
$ENV{GIT_DIFFTOOL_NO_PROMPT} = 'true';
|
||||
}
|
||||
return @command
|
||||
}
|
||||
|
||||
setup_environment();
|
||||
|
||||
# ActiveState Perl for Win32 does not implement POSIX semantics of
|
||||
# exec* system call. It just spawns the given executable and finishes
|
||||
# the starting program, exiting with code 0.
|
||||
# system will at least catch the errors returned by git diff,
|
||||
# allowing the caller of git difftool better handling of failures.
|
||||
my $rc = system(generate_command());
|
||||
exit($rc | ($rc >> 8));
|
||||
|
||||
@ -105,6 +105,19 @@ test_expect_success PERL 'difftool honors --gui' '
|
||||
restore_test_defaults
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool --gui last setting wins' '
|
||||
git config diff.guitool bogus-tool &&
|
||||
git difftool --no-prompt --gui --no-gui &&
|
||||
|
||||
git config merge.tool bogus-tool &&
|
||||
git config diff.tool bogus-tool &&
|
||||
git config diff.guitool test-tool &&
|
||||
diff=$(git difftool --no-prompt --no-gui --gui branch) &&
|
||||
test "$diff" = "branch" &&
|
||||
|
||||
restore_test_defaults
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool --gui works without configured diff.guitool' '
|
||||
git config diff.tool test-tool &&
|
||||
|
||||
@ -317,4 +330,48 @@ test_expect_success PERL 'say no to the second file' '
|
||||
echo "$diff" | stdin_doesnot_contain br2
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool --tool-help' '
|
||||
tool_help=$(git difftool --tool-help) &&
|
||||
echo "$tool_help" | stdin_contains tool
|
||||
'
|
||||
|
||||
test_expect_success PERL 'setup change in subdirectory' '
|
||||
git checkout master &&
|
||||
mkdir sub &&
|
||||
echo master >sub/sub &&
|
||||
git add sub/sub &&
|
||||
git commit -m "added sub/sub" &&
|
||||
echo test >>file &&
|
||||
echo test >>sub/sub &&
|
||||
git add . &&
|
||||
git commit -m "modified both"
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool -d' '
|
||||
diff=$(git difftool -d --extcmd ls branch) &&
|
||||
echo "$diff" | stdin_contains sub &&
|
||||
echo "$diff" | stdin_contains file
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool --dir-diff' '
|
||||
diff=$(git difftool --dir-diff --extcmd ls branch) &&
|
||||
echo "$diff" | stdin_contains sub &&
|
||||
echo "$diff" | stdin_contains file
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool --dir-diff ignores --prompt' '
|
||||
diff=$(git difftool --dir-diff --prompt --extcmd ls branch) &&
|
||||
echo "$diff" | stdin_contains sub &&
|
||||
echo "$diff" | stdin_contains file
|
||||
'
|
||||
|
||||
test_expect_success PERL 'difftool --dir-diff from subdirectory' '
|
||||
(
|
||||
cd sub &&
|
||||
diff=$(git difftool --dir-diff --extcmd ls branch) &&
|
||||
echo "$diff" | stdin_contains sub &&
|
||||
echo "$diff" | stdin_contains file
|
||||
)
|
||||
'
|
||||
|
||||
test_done
|
||||
|
||||
Loading…
Reference in New Issue
Block a user