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status_shortcuts.sh
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status_shortcuts.sh
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# ------------------------------------------------------------------------------
# SCM Breeze - Streamline your SCM workflow.
# Copyright 2011 Nathan Broadbent (http://madebynathan.com). All Rights Reserved.
# Released under the LGPL (GNU Lesser General Public License)
# ------------------------------------------------------------------------------
# ------------------------------------------------------------------------------
# Numbered file shortcuts for git commands
# ------------------------------------------------------------------------------
# Processes 'git status --porcelain', and exports numbered
# env variables that contain the path of each affected file.
# Output is also more concise than standard 'git status'.
#
# Call with optional <group> parameter to filter by modification state:
# 1 || staged, 2 || unmerged, 3 || unstaged, 4 || untracked
# --------------------------------------------------------------------
git_status_shortcuts() {
fail_if_not_git_repo || return 1
zsh_compat # Ensure shwordsplit is on for zsh
git_clear_vars
# Run ruby script, store output
local cmd_output="$(/usr/bin/env ruby "$scmbDir/lib/git/status_shortcuts.rb" "$@")"
# Print debug information if $scmbDebug = "true"
if [ "${scmbDebug:-}" = "true" ]; then
printf "status_shortcuts.rb output => \n$cmd_output\n------------------------\n"
fi
if [[ -z "$cmd_output" ]]; then
# Just show regular git status if ruby script returns nothing.
git status
echo -e "\n\033[33mThere were more than $gs_max_changes changed files. SCM Breeze has fallen back to standard \`git status\` for performance reasons.\033[0m"
return 1
fi
# Fetch list of files from last line of script output
files="$(echo "$cmd_output" | \grep '@@filelist@@::' | sed 's%@@filelist@@::%%g')"
if [ "${scmbDebug:-}" = "true" ]; then echo "filelist => $files"; fi
# Export numbered env variables for each file
local IFS="|"
local e=1
for file in $files; do
export $git_env_char$e="$file"
if [ "${scmbDebug:-}" = "true" ]; then echo "Set \$$git_env_char$e => $file"; fi
let e++
done
if [ "${scmbDebug:-}" = "true" ]; then echo "------------------------"; fi
# Print status
echo "$cmd_output" | \grep -v '@@filelist@@::'
zsh_reset # Reset zsh environment to default
}
# 'git add' & 'git rm' wrapper
# This shortcut means 'stage the change to the file'
# i.e. It will add new and changed files, and remove deleted files.
# Should be used in conjunction with the git_status_shortcuts() function for 'git status'.
# - 'auto git rm' behaviour can be turned off
# -------------------------------------------------------------------------------
git_add_shortcuts() {
fail_if_not_git_repo || return 1
if [ -z "$1" ]; then
echo "Usage: ga <file> => git add <file>"
echo " ga 1 => git add \$e1"
echo " ga 2-4 => git add \$e2 \$e3 \$e4"
echo " ga 2 5-7 => git add \$e2 \$e5 \$e6 \$e7"
if [[ $ga_auto_remove == "yes" ]]; then
echo -e "\nNote: Deleted files will also be staged using this shortcut."
echo " To turn off this behaviour, change the 'auto_remove' option."
fi
else
git_silent_add_shortcuts "$@"
# Makes sense to run 'git status' after this command.
git_status_shortcuts
fi
}
# Does nothing if no args are given.
git_silent_add_shortcuts() {
if [ -n "$1" ]; then
# Expand args and process resulting set of files.
local args
eval args="$(scmb_expand_args "$@")" # populate $args array
for file in "${args[@]}"; do
# Use 'git rm' if file doesn't exist and 'ga_auto_remove' is enabled.
if [[ $ga_auto_remove = yes && ! -e $file ]]; then
echo -n "# "
git rm "$file"
else
git add "$file"
echo -e "# Added '$file'"
fi
done
echo "#"
fi
}
# Prints a list of all files affected by a given SHA1,
# and exports numbered environment variables for each file.
git_show_affected_files(){
fail_if_not_git_repo || return 1
local f=0 # File count
# Show colored revision and commit message
echo -n "# "; git show --oneline --name-only "$@" | head -n1; echo "# "
for file in $(git show --pretty="format:" --name-only "$@" | \grep -v '^$'); do
let f++
export $git_env_char$f=$file # Export numbered variable.
echo -e "# \033[2;37m[\033[0m$f\033[2;37m]\033[0m $file"
done; echo "# "
}
# Allows expansion of numbered shortcuts, ranges of shortcuts, or standard paths.
# Return a string which can be `eval`ed like: eval args="$(scmb_expand_args "$@")"
# Numbered shortcut variables are produced by various commands, such as:
# * git_status_shortcuts() - git status implementation
# * git_show_affected_files() - shows files affected by a given SHA1, etc.
scmb_expand_args() {
# Check for --relative param
if [ "$1" = "--relative" ]; then
local relative=1
shift
fi
local args
args=() # initially empty array. zsh 5.0.2 from Ubuntu 14.04 requires this to be separated
for arg in "$@"; do
if [[ "$arg" =~ ^[0-9]{0,4}$ ]] ; then # Substitute $e{*} variables for any integers
if [ -e "$arg" ]; then
# Don't expand files or directories with numeric names
args+=("$arg")
else
args+=("$(_print_path "$relative" "$git_env_char$arg")")
fi
elif [[ "$arg" =~ ^[0-9]+-[0-9]+$ ]]; then # Expand ranges into $e{*} variables
for i in $(eval echo {${arg/-/..}}); do
args+=("$(_print_path "$relative" "$git_env_char$i")")
done
else # Otherwise, treat $arg as a normal string.
args+=("$arg")
fi
done
# "declare -p" with zsh 5.0.2 on Ubuntu 14.04 creates a string that it cannot process:
# typeset -a args args=(one three six)
# There should be a ; between the two "args" tokens
# "declare -p" with bash 4.3.11(1) on Ubuntu 14.04 creates a string like:
# declare -a a='([0]="a" [1]="b c" [2]="d")'
# The RHS of this string is incompatible with zsh 5.0.2 and "eval args="
# Generate a quoted array string to assign to "eval args="
echo "( $(token_quote "${args[@]}") )"
}
# Expand a variable (named by $2) into a (possibly relative) pathname
_print_path() {
local pathname
pathname=$(eval printf '%s' "\"\${$2}\"")
if [ "$1" = 1 ]; then # print relative
pathname=${pathname#$PWD/} # Remove $PWD from beginning of the path
fi
printf '%s' "$pathname"
}
# Execute a command with expanded args, e.g. Delete files 6 to 12: $ ge rm 6-12
# Fails if command is a number or range (probably not worth fixing)
exec_scmb_expand_args() {
local args
eval "args=$(scmb_expand_args "$@")" # populate $args array
_safe_eval "${args[@]}"
}
# Clear numbered env variables
git_clear_vars() {
local i
for (( i=1; i<=$gs_max_changes; i++ )); do
# Stop clearing after first empty var
local env_var_i=${git_env_char}${i}
if [[ -z "$(eval echo "\${$env_var_i:-}")" ]]; then
break
else
unset $env_var_i
fi
done
}
# Shortcuts for resolving merge conflicts.
_git_resolve_merge_conflict() {
if [ -n "$2" ]; then
# Expand args and process resulting set of files.
local args
eval "args=$(scmb_expand_args "$@")" # populate $args array
for file in "${args[@]:2}"; do
git checkout "--$1""s" "$file" # "--$1""s" is expanded to --ours or --theirs
git add "$file"
echo -e "# Added $1 version of '$file'"
done
echo -e "# -- If you have finished resolving conflicts, commit the resolutions with 'git commit'"
fi
}
ours(){ _git_resolve_merge_conflict "our" "$@"; }
theirs(){ _git_resolve_merge_conflict "their" "$@"; }
# Git commit prompts
# ------------------------------------------------------------------------------
# * Prompt for commit message
# * Execute prerequisite commands if message given, abort if not
# * Pipe commit message to 'git commit'
# * Add escaped commit command and unescaped message to bash history.
git_commit_prompt() (
local commit_msg
local saved_commit_msg
if [ -f "/tmp/.git_commit_message~" ]; then
saved_commit_msg="$(cat /tmp/.git_commit_message~)"
echo -e "\033[0;36mLeave blank to use saved commit message: \033[0m$saved_commit_msg"
fi
if [[ $shell == "zsh" ]]; then
vared -h -p "Commit Message: " commit_msg
else
read -r -e -p "Commit Message: " commit_msg
fi
if [ -z "$commit_msg" ]; then
if [ -n "$saved_commit_msg" ]; then
commit_msg="$saved_commit_msg"
else
echo -e "\033[0;31mAborting commit due to empty commit message.\033[0m"
return
fi
fi
# Add $GIT_COMMIT_MSG_SUFFIX to commit message, if given.
# (Used to append things like [ci skip] for Travis CI)
if [ -n "$GIT_COMMIT_MSG_SUFFIX" ]; then
commit_msg="$commit_msg $GIT_COMMIT_MSG_SUFFIX"
fi
# Exclamation marks are really difficult to escape properly in a bash prompt.
# They must always be enclosed with single quotes.
escaped_msg=$(echo "$commit_msg" | sed -e 's/"/\\"/g' -e "s/!/\"'!'\"/g")
# Add command to bash history, so that if a git pre-commit hook fails,
# you can just press "up" and "return" to retry the commit.
if [[ $shell == "zsh" ]]; then
# zsh's print needs double escaping
print -s "git commit -m \"${escaped_msg//\\/\\\\}\""
else
history -s "git commit -m \"$escaped_msg\""
# Need to write history to a file for tests
if [ -n "$SHUNIT_VERSION" ]; then history -w $HISTFILE; fi
fi
# Also save the commit message to a temp file in case git commit fails
echo "$commit_msg" > "/tmp/.git_commit_message~"
eval $@ # run any prequisite commands
echo "$commit_msg" | git commit -F - | tail -n +2
# Fetch the pipe status (for both bash and zsh):
GIT_PIPE_STATUS=("${PIPESTATUS[@]}${pipestatus[@]}")
if [[ $shell == "zsh" ]]; then
git_exit_status="${GIT_PIPE_STATUS[2]}" # zsh array indexes start at 1
else
git_exit_status="${GIT_PIPE_STATUS[1]}"
fi
if [[ "$git_exit_status" == 0 ]]; then
# Delete saved commit message if commit was successful
rm -f "/tmp/.git_commit_message~"
fi
)
# Prompt for commit message, then commit all modified and untracked files.
git_commit_all() (
fail_if_not_git_repo || return 1
changes=$(git status --porcelain | wc -l | tr -d ' ')
if [ "$changes" -gt 0 ]; then
if [ -n "$GIT_COMMIT_MSG_SUFFIX" ]; then
local appending=" | \033[0;36mappending '\033[1;36m$GIT_COMMIT_MSG_SUFFIX\033[0;36m' to commit message.\033[0m"
fi
echo -e "\033[0;33mCommitting all files (\033[0;31m$changes\033[0;33m)\033[0m$appending"
git_commit_prompt "git add --all ."
else
echo "# No changed files to commit."
fi
)
# Add paths or expanded args if any given, then commit all staged changes.
git_add_and_commit() (
fail_if_not_git_repo || return 1
git_silent_add_shortcuts "$@"
changes=$(git diff --cached --numstat | wc -l)
if [ "$changes" -gt 0 ]; then
git_status_shortcuts 1 # only show staged changes
git_commit_prompt
else
echo "# No staged changes to commit."
fi
)