#!/usr/bin/sh # git-difftool--helper is a GIT_EXTERNAL_DIFF-compatible diff tool launcher. # This script is typically launched by using the 'git difftool' # convenience command. # # Copyright (c) 2009, 2010 David Aguilar TOOL_MODE=diff . git-mergetool--lib # difftool.prompt controls the default prompt/no-prompt behavior # and is overridden with $GIT_DIFFTOOL*_PROMPT. should_prompt () { prompt_merge=$(git config --bool mergetool.prompt || echo true) prompt=$(git config --bool difftool.prompt || echo $prompt_merge) if test "$prompt" = true then test -z "$GIT_DIFFTOOL_NO_PROMPT" else test -n "$GIT_DIFFTOOL_PROMPT" fi } # Indicates that --extcmd=... was specified use_ext_cmd () { test -n "$GIT_DIFFTOOL_EXTCMD" } launch_merge_tool () { # Merged is the filename as it appears in the work tree # Local is the contents of a/filename # Remote is the contents of b/filename # Custom merge tool commands might use $BASE so we provide it MERGED="$1" LOCAL="$2" REMOTE="$3" BASE="$1" # $LOCAL and $REMOTE are temporary files so prompt # the user with the real $MERGED name before launching $merge_tool. if should_prompt then printf "\nViewing (%s/%s): '%s'\n" "$GIT_DIFF_PATH_COUNTER" \ "$GIT_DIFF_PATH_TOTAL" "$MERGED" if use_ext_cmd then printf "Launch '%s' [Y/n]? " \ "$GIT_DIFFTOOL_EXTCMD" else printf "Launch '%s' [Y/n]? " "$merge_tool" fi read ans || return if test "$ans" = n then return fi fi if use_ext_cmd then export BASE eval $GIT_DIFFTOOL_EXTCMD '"$LOCAL"' '"$REMOTE"' else initialize_merge_tool "$merge_tool" # ignore the error from the above --- run_merge_tool # will diagnose unusable tool by itself run_merge_tool "$merge_tool" fi } if ! use_ext_cmd then if test -n "$GIT_DIFF_TOOL" then merge_tool="$GIT_DIFF_TOOL" else merge_tool="$(get_merge_tool)" subshell_exit_status=$? if test $subshell_exit_status -gt 1 then exit $subshell_exit_status fi fi fi if test -n "$GIT_DIFFTOOL_DIRDIFF" then LOCAL="$1" REMOTE="$2" initialize_merge_tool "$merge_tool" # ignore the error from the above --- run_merge_tool # will diagnose unusable tool by itself run_merge_tool "$merge_tool" false status=$? if test $status -ge 126 then # Command not found (127), not executable (126) or # exited via a signal (>= 128). exit $status fi if test "$GIT_DIFFTOOL_TRUST_EXIT_CODE" = true then exit $status fi else # Launch the merge tool on each path provided by 'git diff' while test $# -gt 6 do launch_merge_tool "$1" "$2" "$5" status=$? if test $status -ge 126 then # Command not found (127), not executable (126) or # exited via a signal (>= 128). exit $status fi if test "$status" != 0 && test "$GIT_DIFFTOOL_TRUST_EXIT_CODE" = true then exit $status fi shift 7 done fi exit 0