| #!/bin/sh |
| # git-mergetool--lib is a library for common merge tool functions |
| diff_mode() { |
| test "$TOOL_MODE" = diff |
| } |
| |
| merge_mode() { |
| test "$TOOL_MODE" = merge |
| } |
| |
| translate_merge_tool_path () { |
| case "$1" in |
| vimdiff) |
| echo vim |
| ;; |
| gvimdiff) |
| echo gvim |
| ;; |
| emerge) |
| echo emacs |
| ;; |
| araxis) |
| echo compare |
| ;; |
| *) |
| echo "$1" |
| ;; |
| esac |
| } |
| |
| check_unchanged () { |
| if test "$MERGED" -nt "$BACKUP"; then |
| status=0 |
| else |
| while true; do |
| echo "$MERGED seems unchanged." |
| printf "Was the merge successful? [y/n] " |
| read answer < /dev/tty |
| case "$answer" in |
| y*|Y*) status=0; break ;; |
| n*|N*) status=1; break ;; |
| esac |
| done |
| fi |
| } |
| |
| valid_tool () { |
| case "$1" in |
| kdiff3 | tkdiff | xxdiff | meld | opendiff | \ |
| emerge | vimdiff | gvimdiff | ecmerge | diffuse | araxis | p4merge) |
| ;; # happy |
| tortoisemerge) |
| if ! merge_mode; then |
| return 1 |
| fi |
| ;; |
| kompare) |
| if ! diff_mode; then |
| return 1 |
| fi |
| ;; |
| *) |
| if test -z "$(get_merge_tool_cmd "$1")"; then |
| return 1 |
| fi |
| ;; |
| esac |
| } |
| |
| get_merge_tool_cmd () { |
| # Prints the custom command for a merge tool |
| if test -n "$1"; then |
| merge_tool="$1" |
| else |
| merge_tool="$(get_merge_tool)" |
| fi |
| if diff_mode; then |
| echo "$(git config difftool.$merge_tool.cmd || |
| git config mergetool.$merge_tool.cmd)" |
| else |
| echo "$(git config mergetool.$merge_tool.cmd)" |
| fi |
| } |
| |
| run_merge_tool () { |
| merge_tool_path="$(get_merge_tool_path "$1")" || exit |
| base_present="$2" |
| status=0 |
| |
| case "$1" in |
| kdiff3) |
| if merge_mode; then |
| if $base_present; then |
| ("$merge_tool_path" --auto \ |
| --L1 "$MERGED (Base)" \ |
| --L2 "$MERGED (Local)" \ |
| --L3 "$MERGED (Remote)" \ |
| -o "$MERGED" \ |
| "$BASE" "$LOCAL" "$REMOTE" \ |
| > /dev/null 2>&1) |
| else |
| ("$merge_tool_path" --auto \ |
| --L1 "$MERGED (Local)" \ |
| --L2 "$MERGED (Remote)" \ |
| -o "$MERGED" \ |
| "$LOCAL" "$REMOTE" \ |
| > /dev/null 2>&1) |
| fi |
| status=$? |
| else |
| ("$merge_tool_path" --auto \ |
| --L1 "$MERGED (A)" \ |
| --L2 "$MERGED (B)" "$LOCAL" "$REMOTE" \ |
| > /dev/null 2>&1) |
| fi |
| ;; |
| kompare) |
| "$merge_tool_path" "$LOCAL" "$REMOTE" |
| ;; |
| tkdiff) |
| if merge_mode; then |
| if $base_present; then |
| "$merge_tool_path" -a "$BASE" \ |
| -o "$MERGED" "$LOCAL" "$REMOTE" |
| else |
| "$merge_tool_path" \ |
| -o "$MERGED" "$LOCAL" "$REMOTE" |
| fi |
| status=$? |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| p4merge) |
| if merge_mode; then |
| touch "$BACKUP" |
| if $base_present; then |
| "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" "$MERGED" |
| else |
| "$merge_tool_path" "$LOCAL" "$LOCAL" "$REMOTE" "$MERGED" |
| fi |
| check_unchanged |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| meld) |
| if merge_mode; then |
| touch "$BACKUP" |
| "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE" |
| check_unchanged |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| diffuse) |
| if merge_mode; then |
| touch "$BACKUP" |
| if $base_present; then |
| "$merge_tool_path" \ |
| "$LOCAL" "$MERGED" "$REMOTE" \ |
| "$BASE" | cat |
| else |
| "$merge_tool_path" \ |
| "$LOCAL" "$MERGED" "$REMOTE" | cat |
| fi |
| check_unchanged |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" | cat |
| fi |
| ;; |
| vimdiff) |
| if merge_mode; then |
| touch "$BACKUP" |
| "$merge_tool_path" -d -c "wincmd l" \ |
| "$LOCAL" "$MERGED" "$REMOTE" |
| check_unchanged |
| else |
| "$merge_tool_path" -d -c "wincmd l" \ |
| "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| gvimdiff) |
| if merge_mode; then |
| touch "$BACKUP" |
| "$merge_tool_path" -d -c "wincmd l" -f \ |
| "$LOCAL" "$MERGED" "$REMOTE" |
| check_unchanged |
| else |
| "$merge_tool_path" -d -c "wincmd l" -f \ |
| "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| xxdiff) |
| if merge_mode; then |
| touch "$BACKUP" |
| if $base_present; then |
| "$merge_tool_path" -X --show-merged-pane \ |
| -R 'Accel.SaveAsMerged: "Ctrl-S"' \ |
| -R 'Accel.Search: "Ctrl+F"' \ |
| -R 'Accel.SearchForward: "Ctrl-G"' \ |
| --merged-file "$MERGED" \ |
| "$LOCAL" "$BASE" "$REMOTE" |
| else |
| "$merge_tool_path" -X $extra \ |
| -R 'Accel.SaveAsMerged: "Ctrl-S"' \ |
| -R 'Accel.Search: "Ctrl+F"' \ |
| -R 'Accel.SearchForward: "Ctrl-G"' \ |
| --merged-file "$MERGED" \ |
| "$LOCAL" "$REMOTE" |
| fi |
| check_unchanged |
| else |
| "$merge_tool_path" \ |
| -R 'Accel.Search: "Ctrl+F"' \ |
| -R 'Accel.SearchForward: "Ctrl-G"' \ |
| "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| opendiff) |
| if merge_mode; then |
| touch "$BACKUP" |
| if $base_present; then |
| "$merge_tool_path" "$LOCAL" "$REMOTE" \ |
| -ancestor "$BASE" \ |
| -merge "$MERGED" | cat |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" \ |
| -merge "$MERGED" | cat |
| fi |
| check_unchanged |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" | cat |
| fi |
| ;; |
| ecmerge) |
| if merge_mode; then |
| touch "$BACKUP" |
| if $base_present; then |
| "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" \ |
| --default --mode=merge3 --to="$MERGED" |
| else |
| "$merge_tool_path" "$LOCAL" "$REMOTE" \ |
| --default --mode=merge2 --to="$MERGED" |
| fi |
| check_unchanged |
| else |
| "$merge_tool_path" --default --mode=diff2 \ |
| "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| emerge) |
| if merge_mode; then |
| if $base_present; then |
| "$merge_tool_path" \ |
| -f emerge-files-with-ancestor-command \ |
| "$LOCAL" "$REMOTE" "$BASE" \ |
| "$(basename "$MERGED")" |
| else |
| "$merge_tool_path" \ |
| -f emerge-files-command \ |
| "$LOCAL" "$REMOTE" \ |
| "$(basename "$MERGED")" |
| fi |
| status=$? |
| else |
| "$merge_tool_path" -f emerge-files-command \ |
| "$LOCAL" "$REMOTE" |
| fi |
| ;; |
| tortoisemerge) |
| if $base_present; then |
| touch "$BACKUP" |
| "$merge_tool_path" \ |
| -base:"$BASE" -mine:"$LOCAL" \ |
| -theirs:"$REMOTE" -merged:"$MERGED" |
| check_unchanged |
| else |
| echo "TortoiseMerge cannot be used without a base" 1>&2 |
| status=1 |
| fi |
| ;; |
| araxis) |
| if merge_mode; then |
| touch "$BACKUP" |
| if $base_present; then |
| "$merge_tool_path" -wait -merge -3 -a1 \ |
| "$BASE" "$LOCAL" "$REMOTE" "$MERGED" \ |
| >/dev/null 2>&1 |
| else |
| "$merge_tool_path" -wait -2 \ |
| "$LOCAL" "$REMOTE" "$MERGED" \ |
| >/dev/null 2>&1 |
| fi |
| check_unchanged |
| else |
| "$merge_tool_path" -wait -2 "$LOCAL" "$REMOTE" \ |
| >/dev/null 2>&1 |
| fi |
| ;; |
| *) |
| merge_tool_cmd="$(get_merge_tool_cmd "$1")" |
| if test -z "$merge_tool_cmd"; then |
| if merge_mode; then |
| status=1 |
| fi |
| break |
| fi |
| if merge_mode; then |
| trust_exit_code="$(git config --bool \ |
| mergetool."$1".trustExitCode || echo false)" |
| if test "$trust_exit_code" = "false"; then |
| touch "$BACKUP" |
| ( eval $merge_tool_cmd ) |
| check_unchanged |
| else |
| ( eval $merge_tool_cmd ) |
| status=$? |
| fi |
| else |
| ( eval $merge_tool_cmd ) |
| fi |
| ;; |
| esac |
| return $status |
| } |
| |
| guess_merge_tool () { |
| if merge_mode; then |
| tools="tortoisemerge" |
| else |
| tools="kompare" |
| fi |
| if test -n "$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 ecmerge p4merge araxis" |
| fi |
| case "${VISUAL:-$EDITOR}" in |
| *vim*) |
| tools="$tools vimdiff emerge" |
| ;; |
| *) |
| tools="$tools emerge vimdiff" |
| ;; |
| esac |
| echo >&2 "merge tool candidates: $tools" |
| |
| # Loop over each candidate and stop when a valid merge tool is found. |
| for i in $tools |
| do |
| merge_tool_path="$(translate_merge_tool_path "$i")" |
| if type "$merge_tool_path" > /dev/null 2>&1; then |
| echo "$i" |
| return 0 |
| fi |
| done |
| |
| echo >&2 "No known merge resolution program available." |
| return 1 |
| } |
| |
| get_configured_merge_tool () { |
| # Diff mode first tries diff.tool and falls back to merge.tool. |
| # Merge mode only checks merge.tool |
| if diff_mode; then |
| merge_tool=$(git config diff.tool || git config merge.tool) |
| else |
| merge_tool=$(git config merge.tool) |
| fi |
| if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then |
| echo >&2 "git config option $TOOL_MODE.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. |
| if test -n "$1"; then |
| merge_tool="$1" |
| else |
| merge_tool="$(get_merge_tool)" |
| fi |
| 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 "$merge_tool_path" |
| } |
| |
| get_merge_tool () { |
| # Check if a merge tool has been configured |
| merge_tool=$(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 |
| fi |
| echo "$merge_tool" |
| } |
