Revision c62bc49139f1d18e922fc98e35bb08b1aadbcafc authored by Junio C Hamano on 02 August 2019, 20:12:02 UTC, committed by Junio C Hamano on 02 August 2019, 20:12:02 UTC
Support building Git with Visual Studio The bits about .git/branches/* have been dropped from the series. We may want to drop the support for it, but until that happens, the tests should rely on the existence of the support to pass. * js/visual-studio: (23 commits) git: avoid calling aliased builtins via their dashed form bin-wrappers: append `.exe` to target paths if necessary .gitignore: ignore Visual Studio's temporary/generated files .gitignore: touch up the entries regarding Visual Studio vcxproj: also link-or-copy builtins msvc: add a Makefile target to pre-generate the Visual Studio solution contrib/buildsystems: add a backend for modern Visual Studio versions contrib/buildsystems: handle options starting with a slash contrib/buildsystems: also handle -lexpat contrib/buildsystems: handle libiconv, too contrib/buildsystems: handle the curl library option contrib/buildsystems: error out on unknown option contrib/buildsystems: optionally capture the dry-run in a file contrib/buildsystems: redirect errors of the dry run into a log file contrib/buildsystems: ignore gettext stuff contrib/buildsystems: handle quoted spaces in filenames contrib/buildsystems: fix misleading error message contrib/buildsystems: ignore irrelevant files in Generators/ contrib/buildsystems: ignore invalidcontinue.obj Vcproj.pm: urlencode '<' and '>' when generating VC projects ...
git-mergetool--lib.sh
# git-mergetool--lib is a shell library for common merge tool functions
: ${MERGE_TOOLS_DIR=$(git --exec-path)/mergetools}
IFS='
'
mode_ok () {
if diff_mode
then
can_diff
elif merge_mode
then
can_merge
else
false
fi
}
is_available () {
merge_tool_path=$(translate_merge_tool_path "$1") &&
type "$merge_tool_path" >/dev/null 2>&1
}
list_config_tools () {
section=$1
line_prefix=${2:-}
git config --get-regexp $section'\..*\.cmd' |
while read -r key value
do
toolname=${key#$section.}
toolname=${toolname%.cmd}
printf "%s%s\n" "$line_prefix" "$toolname"
done
}
show_tool_names () {
condition=${1:-true} per_line_prefix=${2:-} preamble=${3:-}
not_found_msg=${4:-}
extra_content=${5:-}
shown_any=
( cd "$MERGE_TOOLS_DIR" && ls ) | {
while read toolname
do
if setup_tool "$toolname" 2>/dev/null &&
(eval "$condition" "$toolname")
then
if test -n "$preamble"
then
printf "%s\n" "$preamble"
preamble=
fi
shown_any=yes
printf "%s%s\n" "$per_line_prefix" "$toolname"
fi
done
if test -n "$extra_content"
then
if test -n "$preamble"
then
# Note: no '\n' here since we don't want a
# blank line if there is no initial content.
printf "%s" "$preamble"
preamble=
fi
shown_any=yes
printf "\n%s\n" "$extra_content"
fi
if test -n "$preamble" && test -n "$not_found_msg"
then
printf "%s\n" "$not_found_msg"
fi
test -n "$shown_any"
}
}
diff_mode () {
test "$TOOL_MODE" = diff
}
merge_mode () {
test "$TOOL_MODE" = merge
}
gui_mode () {
test "$GIT_MERGETOOL_GUI" = true
}
translate_merge_tool_path () {
echo "$1"
}
check_unchanged () {
if test "$MERGED" -nt "$BACKUP"
then
return 0
else
while true
do
echo "$MERGED seems unchanged."
printf "Was the merge successful [y/n]? "
read answer || return 1
case "$answer" in
y*|Y*) return 0 ;;
n*|N*) return 1 ;;
esac
done
fi
}
valid_tool () {
setup_tool "$1" && return 0
cmd=$(get_merge_tool_cmd "$1")
test -n "$cmd"
}
setup_user_tool () {
merge_tool_cmd=$(get_merge_tool_cmd "$tool")
test -n "$merge_tool_cmd" || return 1
diff_cmd () {
( eval $merge_tool_cmd )
}
merge_cmd () {
( eval $merge_tool_cmd )
}
}
setup_tool () {
tool="$1"
# Fallback definitions, to be overridden by tools.
can_merge () {
return 0
}
can_diff () {
return 0
}
diff_cmd () {
return 1
}
merge_cmd () {
return 1
}
translate_merge_tool_path () {
echo "$1"
}
# Most tools' exit codes cannot be trusted, so By default we ignore
# their exit code and check the merged file's modification time in
# check_unchanged() to determine whether or not the merge was
# successful. The return value from run_merge_cmd, by default, is
# determined by check_unchanged().
#
# When a tool's exit code can be trusted then the return value from
# run_merge_cmd is simply the tool's exit code, and check_unchanged()
# is not called.
#
# The return value of exit_code_trustable() tells us whether or not we
# can trust the tool's exit code.
#
# User-defined and built-in tools default to false.
# Built-in tools advertise that their exit code is trustable by
# redefining exit_code_trustable() to true.
exit_code_trustable () {
false
}
if ! test -f "$MERGE_TOOLS_DIR/$tool"
then
setup_user_tool
return $?
fi
# Load the redefined functions
. "$MERGE_TOOLS_DIR/$tool"
# Now let the user override the default command for the tool. If
# they have not done so then this will return 1 which we ignore.
setup_user_tool
if merge_mode && ! can_merge
then
echo "error: '$tool' can not be used to resolve merges" >&2
return 1
elif diff_mode && ! can_diff
then
echo "error: '$tool' can only be used to resolve merges" >&2
return 1
fi
return 0
}
get_merge_tool_cmd () {
merge_tool="$1"
if diff_mode
then
git config "difftool.$merge_tool.cmd" ||
git config "mergetool.$merge_tool.cmd"
else
git config "mergetool.$merge_tool.cmd"
fi
}
trust_exit_code () {
if git config --bool "mergetool.$1.trustExitCode"
then
:; # OK
elif exit_code_trustable
then
echo true
else
echo false
fi
}
# Entry point for running tools
run_merge_tool () {
# If GIT_PREFIX is empty then we cannot use it in tools
# that expect to be able to chdir() to its value.
GIT_PREFIX=${GIT_PREFIX:-.}
export GIT_PREFIX
merge_tool_path=$(get_merge_tool_path "$1") || exit
base_present="$2"
# Bring tool-specific functions into scope
setup_tool "$1" || return 1
if merge_mode
then
run_merge_cmd "$1"
else
run_diff_cmd "$1"
fi
}
# Run a either a configured or built-in diff tool
run_diff_cmd () {
diff_cmd "$1"
}
# Run a either a configured or built-in merge tool
run_merge_cmd () {
mergetool_trust_exit_code=$(trust_exit_code "$1")
if test "$mergetool_trust_exit_code" = "true"
then
merge_cmd "$1"
else
touch "$BACKUP"
merge_cmd "$1"
check_unchanged
fi
}
list_merge_tool_candidates () {
if merge_mode
then
tools="tortoisemerge"
else
tools="kompare"
fi
if test -n "$DISPLAY"
then
if test -n "$GNOME_DESKTOP_SESSION_ID"
then
tools="meld opendiff kdiff3 tkdiff xxdiff $tools"
else
tools="opendiff kdiff3 tkdiff xxdiff meld $tools"
fi
tools="$tools gvimdiff diffuse diffmerge ecmerge"
tools="$tools p4merge araxis bc codecompare"
tools="$tools smerge"
fi
case "${VISUAL:-$EDITOR}" in
*vim*)
tools="$tools vimdiff emerge"
;;
*)
tools="$tools emerge vimdiff"
;;
esac
}
show_tool_help () {
tool_opt="'git ${TOOL_MODE}tool --tool=<tool>'"
tab=' '
LF='
'
any_shown=no
cmd_name=${TOOL_MODE}tool
config_tools=$({
diff_mode && list_config_tools difftool "$tab$tab"
list_config_tools mergetool "$tab$tab"
} | sort)
extra_content=
if test -n "$config_tools"
then
extra_content="${tab}user-defined:${LF}$config_tools"
fi
show_tool_names 'mode_ok && is_available' "$tab$tab" \
"$tool_opt may be set to one of the following:" \
"No suitable tool for 'git $cmd_name --tool=<tool>' found." \
"$extra_content" &&
any_shown=yes
show_tool_names 'mode_ok && ! is_available' "$tab$tab" \
"${LF}The following tools are valid, but not currently available:" &&
any_shown=yes
if test "$any_shown" = yes
then
echo
echo "Some of the tools listed above only work in a windowed"
echo "environment. If run in a terminal-only session, they will fail."
fi
exit 0
}
guess_merge_tool () {
list_merge_tool_candidates
cat >&2 <<-EOF
This message is displayed because '$TOOL_MODE.tool' is not configured.
See 'git ${TOOL_MODE}tool --tool-help' or 'git help config' for more details.
'git ${TOOL_MODE}tool' will now attempt to use one of the following tools:
$tools
EOF
# Loop over each candidate and stop when a valid merge tool is found.
IFS=' '
for tool in $tools
do
is_available "$tool" && echo "$tool" && return 0
done
echo >&2 "No known ${TOOL_MODE} tool is available."
return 1
}
get_configured_merge_tool () {
keys=
if diff_mode
then
if gui_mode
then
keys="diff.guitool merge.guitool diff.tool merge.tool"
else
keys="diff.tool merge.tool"
fi
else
if gui_mode
then
keys="merge.guitool merge.tool"
else
keys="merge.tool"
fi
fi
merge_tool=$(
IFS=' '
for key in $keys
do
selected=$(git config $key)
if test -n "$selected"
then
echo "$selected"
return
fi
done)
if test -n "$merge_tool" && ! valid_tool "$merge_tool"
then
echo >&2 "git config option $TOOL_MODE.${gui_prefix}tool set to unknown tool: $merge_tool"
echo >&2 "Resetting to default..."
return 1
fi
echo "$merge_tool"
}
get_merge_tool_path () {
# A merge tool has been set, so verify that it's valid.
merge_tool="$1"
if ! valid_tool "$merge_tool"
then
echo >&2 "Unknown merge tool $merge_tool"
exit 1
fi
if diff_mode
then
merge_tool_path=$(git config difftool."$merge_tool".path ||
git config mergetool."$merge_tool".path)
else
merge_tool_path=$(git config mergetool."$merge_tool".path)
fi
if test -z "$merge_tool_path"
then
merge_tool_path=$(translate_merge_tool_path "$merge_tool")
fi
if test -z "$(get_merge_tool_cmd "$merge_tool")" &&
! type "$merge_tool_path" >/dev/null 2>&1
then
echo >&2 "The $TOOL_MODE tool $merge_tool is not available as"\
"'$merge_tool_path'"
exit 1
fi
echo "$merge_tool_path"
}
get_merge_tool () {
is_guessed=false
# Check if a merge tool has been configured
merge_tool=$(get_configured_merge_tool)
# Try to guess an appropriate merge tool if no tool has been set.
if test -z "$merge_tool"
then
merge_tool=$(guess_merge_tool) || exit
is_guessed=true
fi
echo "$merge_tool"
test "$is_guessed" = false
}
mergetool_find_win32_cmd () {
executable=$1
sub_directory=$2
# Use $executable if it exists in $PATH
if type -p "$executable" >/dev/null 2>&1
then
printf '%s' "$executable"
return
fi
# Look for executable in the typical locations
for directory in $(env | grep -Ei '^PROGRAM(FILES(\(X86\))?|W6432)=' |
cut -d '=' -f 2- | sort -u)
do
if test -n "$directory" && test -x "$directory/$sub_directory/$executable"
then
printf '%s' "$directory/$sub_directory/$executable"
return
fi
done
printf '%s' "$executable"
}
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