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374 lines
8.5 KiB
374 lines
8.5 KiB
# This shell scriplet is meant to be included by other shell scripts |
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# to set up some variables pointing at the normal git directories and |
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# a few helper shell functions. |
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# Having this variable in your environment would break scripts because |
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# you would cause "cd" to be taken to unexpected places. If you |
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# like CDPATH, define it for your interactive shell sessions without |
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# exporting it. |
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# But we protect ourselves from such a user mistake nevertheless. |
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unset CDPATH |
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# Similarly for IFS, but some shells (e.g. FreeBSD 7.2) are buggy and |
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# do not equate an unset IFS with IFS with the default, so here is |
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# an explicit SP HT LF. |
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IFS=' |
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' |
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git_broken_path_fix () { |
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case ":$PATH:" in |
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*:$1:*) : ok ;; |
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*) |
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PATH=$( |
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SANE_TOOL_PATH="$1" |
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IFS=: path= sep= |
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set x $PATH |
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shift |
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for elem |
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do |
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case "$SANE_TOOL_PATH:$elem" in |
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(?*:/bin | ?*:/usr/bin) |
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path="$path$sep$SANE_TOOL_PATH" |
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sep=: |
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SANE_TOOL_PATH= |
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esac |
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path="$path$sep$elem" |
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sep=: |
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done |
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echo "$path" |
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) |
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;; |
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esac |
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} |
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# @@BROKEN_PATH_FIX@@ |
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# Source git-sh-i18n for gettext support. |
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. "$(git --exec-path)/git-sh-i18n" |
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die () { |
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die_with_status 1 "$@" |
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} |
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die_with_status () { |
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status=$1 |
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shift |
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printf >&2 '%s\n' "$*" |
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exit "$status" |
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} |
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GIT_QUIET= |
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say () { |
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if test -z "$GIT_QUIET" |
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then |
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printf '%s\n' "$*" |
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fi |
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} |
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if test -n "$OPTIONS_SPEC"; then |
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usage() { |
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"$0" -h |
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exit 1 |
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} |
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parseopt_extra= |
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[ -n "$OPTIONS_KEEPDASHDASH" ] && |
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parseopt_extra="--keep-dashdash" |
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[ -n "$OPTIONS_STUCKLONG" ] && |
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parseopt_extra="$parseopt_extra --stuck-long" |
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eval "$( |
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echo "$OPTIONS_SPEC" | |
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git rev-parse --parseopt $parseopt_extra -- "$@" || |
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echo exit $? |
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)" |
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else |
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dashless=$(basename -- "$0" | sed -e 's/-/ /') |
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usage() { |
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die "$(eval_gettext "usage: \$dashless \$USAGE")" |
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} |
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if [ -z "$LONG_USAGE" ] |
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then |
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LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE")" |
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else |
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LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE |
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$LONG_USAGE")" |
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fi |
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case "$1" in |
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-h) |
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echo "$LONG_USAGE" |
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exit |
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esac |
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fi |
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# Set the name of the end-user facing command in the reflog when the |
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# script may update refs. When GIT_REFLOG_ACTION is already set, this |
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# will not overwrite it, so that a scripted Porcelain (e.g. "git |
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# rebase") can set it to its own name (e.g. "rebase") and then call |
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# another scripted Porcelain (e.g. "git am") and a call to this |
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# function in the latter will keep the name of the end-user facing |
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# program (e.g. "rebase") in GIT_REFLOG_ACTION, ensuring whatever it |
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# does will be record as actions done as part of the end-user facing |
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# operation (e.g. "rebase"). |
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# |
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# NOTE NOTE NOTE: consequently, after assigning a specific message to |
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# GIT_REFLOG_ACTION when calling a "git" command to record a custom |
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# reflog message, do not leave that custom value in GIT_REFLOG_ACTION, |
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# after you are done. Other callers of "git" commands that rely on |
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# writing the default "program name" in reflog expect the variable to |
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# contain the value set by this function. |
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# |
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# To use a custom reflog message, do either one of these three: |
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# |
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# (a) use a single-shot export form: |
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# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" \ |
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# git command-that-updates-a-ref |
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# |
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# (b) save the original away and restore: |
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# SAVED_ACTION=$GIT_REFLOG_ACTION |
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# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" |
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# git command-that-updates-a-ref |
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# GIT_REFLOG_ACITON=$SAVED_ACTION |
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# |
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# (c) assign the variable in a subshell: |
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# ( |
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# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" |
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# git command-that-updates-a-ref |
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# ) |
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set_reflog_action() { |
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if [ -z "${GIT_REFLOG_ACTION:+set}" ] |
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then |
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GIT_REFLOG_ACTION="$*" |
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export GIT_REFLOG_ACTION |
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fi |
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} |
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git_editor() { |
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if test -z "${GIT_EDITOR:+set}" |
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then |
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GIT_EDITOR="$(git var GIT_EDITOR)" || return $? |
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fi |
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eval "$GIT_EDITOR" '"$@"' |
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} |
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git_pager() { |
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if test -t 1 |
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then |
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GIT_PAGER=$(git var GIT_PAGER) |
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else |
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GIT_PAGER=cat |
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fi |
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for vardef in @@PAGER_ENV@@ |
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do |
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var=${vardef%%=*} |
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eval ": \"\${$vardef}\" && export $var" |
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done |
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eval "$GIT_PAGER" '"$@"' |
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} |
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is_bare_repository () { |
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git rev-parse --is-bare-repository |
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} |
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cd_to_toplevel () { |
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cdup=$(git rev-parse --show-toplevel) && |
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cd "$cdup" || { |
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gettextln "Cannot chdir to \$cdup, the toplevel of the working tree" >&2 |
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exit 1 |
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} |
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} |
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require_work_tree_exists () { |
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if test "z$(git rev-parse --is-bare-repository)" != zfalse |
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then |
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program_name=$0 |
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die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")" |
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fi |
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} |
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require_work_tree () { |
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test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true || { |
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program_name=$0 |
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die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")" |
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} |
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} |
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require_clean_work_tree () { |
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git rev-parse --verify HEAD >/dev/null || exit 1 |
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git update-index -q --ignore-submodules --refresh |
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err=0 |
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if ! git diff-files --quiet --ignore-submodules |
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then |
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action=$1 |
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case "$action" in |
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"rewrite branches") |
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gettextln "Cannot rewrite branches: You have unstaged changes." >&2 |
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;; |
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*) |
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eval_gettextln "Cannot \$action: You have unstaged changes." >&2 |
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;; |
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esac |
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err=1 |
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fi |
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if ! git diff-index --cached --quiet --ignore-submodules HEAD -- |
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then |
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if test $err = 0 |
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then |
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action=$1 |
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eval_gettextln "Cannot \$action: Your index contains uncommitted changes." >&2 |
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else |
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gettextln "Additionally, your index contains uncommitted changes." >&2 |
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fi |
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err=1 |
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fi |
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if test $err = 1 |
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then |
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test -n "$2" && echo "$2" >&2 |
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exit 1 |
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fi |
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} |
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# Generate a sed script to parse identities from a commit. |
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# |
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# Reads the commit from stdin, which should be in raw format (e.g., from |
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# cat-file or "--pretty=raw"). |
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# |
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# The first argument specifies the ident line to parse (e.g., "author"), and |
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# the second specifies the environment variable to put it in (e.g., "AUTHOR" |
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# for "GIT_AUTHOR_*"). Multiple pairs can be given to parse author and |
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# committer. |
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pick_ident_script () { |
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while test $# -gt 0 |
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do |
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lid=$1; shift |
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uid=$1; shift |
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printf '%s' " |
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/^$lid /{ |
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s/'/'\\\\''/g |
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h |
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s/^$lid "'\([^<]*\) <[^>]*> .*$/\1/'" |
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s/.*/GIT_${uid}_NAME='&'/p |
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g |
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s/^$lid "'[^<]* <\([^>]*\)> .*$/\1/'" |
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s/.*/GIT_${uid}_EMAIL='&'/p |
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g |
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s/^$lid "'[^<]* <[^>]*> \(.*\)$/@\1/'" |
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s/.*/GIT_${uid}_DATE='&'/p |
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} |
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" |
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done |
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echo '/^$/q' |
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} |
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# Create a pick-script as above and feed it to sed. Stdout is suitable for |
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# feeding to eval. |
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parse_ident_from_commit () { |
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LANG=C LC_ALL=C sed -ne "$(pick_ident_script "$@")" |
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} |
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# Parse the author from a commit given as an argument. Stdout is suitable for |
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# feeding to eval to set the usual GIT_* ident variables. |
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get_author_ident_from_commit () { |
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encoding=$(git config i18n.commitencoding || echo UTF-8) |
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git show -s --pretty=raw --encoding="$encoding" "$1" -- | |
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parse_ident_from_commit author AUTHOR |
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} |
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# Clear repo-local GIT_* environment variables. Useful when switching to |
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# another repository (e.g. when entering a submodule). See also the env |
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# list in git_connect() |
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clear_local_git_env() { |
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unset $(git rev-parse --local-env-vars) |
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} |
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# Generate a virtual base file for a two-file merge. Uses git apply to |
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# remove lines from $1 that are not in $2, leaving only common lines. |
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create_virtual_base() { |
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sz0=$(wc -c <"$1") |
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@@DIFF@@ -u -La/"$1" -Lb/"$1" "$1" "$2" | git apply --no-add |
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sz1=$(wc -c <"$1") |
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# If we do not have enough common material, it is not |
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# worth trying two-file merge using common subsections. |
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expr $sz0 \< $sz1 \* 2 >/dev/null || : >"$1" |
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} |
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# Platform specific tweaks to work around some commands |
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case $(uname -s) in |
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*MINGW*) |
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# Windows has its own (incompatible) sort and find |
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sort () { |
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/usr/bin/sort "$@" |
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} |
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find () { |
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/usr/bin/find "$@" |
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} |
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# git sees Windows-style pwd |
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pwd () { |
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builtin pwd -W |
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} |
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is_absolute_path () { |
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case "$1" in |
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[/\\]* | [A-Za-z]:*) |
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return 0 ;; |
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esac |
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return 1 |
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} |
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;; |
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*) |
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is_absolute_path () { |
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case "$1" in |
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/*) |
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return 0 ;; |
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esac |
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return 1 |
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} |
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esac |
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# Make sure we are in a valid repository of a vintage we understand, |
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# if we require to be in a git repository. |
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git_dir_init () { |
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GIT_DIR=$(git rev-parse --git-dir) || exit |
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if [ -z "$SUBDIRECTORY_OK" ] |
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then |
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test -z "$(git rev-parse --show-cdup)" || { |
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exit=$? |
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gettextln "You need to run this command from the toplevel of the working tree." >&2 |
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exit $exit |
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} |
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fi |
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test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || { |
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gettextln "Unable to determine absolute path of git directory" >&2 |
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exit 1 |
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} |
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: "${GIT_OBJECT_DIRECTORY="$(git rev-parse --git-path objects)"}" |
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} |
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if test -z "$NONGIT_OK" |
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then |
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git_dir_init |
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fi |
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peel_committish () { |
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case "$1" in |
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:/*) |
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peeltmp=$(git rev-parse --verify "$1") && |
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git rev-parse --verify "${peeltmp}^0" |
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;; |
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*) |
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git rev-parse --verify "${1}^0" |
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;; |
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esac |
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}
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