diff options
Diffstat (limited to 'git-sh-setup.sh')
| -rw-r--r--[-rwxr-xr-x] | git-sh-setup.sh | 399 |
1 files changed, 310 insertions, 89 deletions
diff --git a/git-sh-setup.sh b/git-sh-setup.sh index 2142308bcc..378928518b 100755..100644 --- a/git-sh-setup.sh +++ b/git-sh-setup.sh @@ -1,19 +1,69 @@ -#!/bin/sh -# -# This is included in commands that either have to be run from the toplevel -# of the repository, or with GIT_DIR environment variable properly. -# If the GIT_DIR does not look like the right correct git-repository, -# it dies. +# This shell scriplet is meant to be included by other shell scripts +# to set up some variables pointing at the normal git directories and +# a few helper shell functions. # Having this variable in your environment would break scripts because # you would cause "cd" to be taken to unexpected places. If you # like CDPATH, define it for your interactive shell sessions without # exporting it. +# But we protect ourselves from such a user mistake nevertheless. unset CDPATH -die() { - echo >&2 "$@" - exit 1 +# Similarly for IFS, but some shells (e.g. FreeBSD 7.2) are buggy and +# do not equate an unset IFS with IFS with the default, so here is +# an explicit SP HT LF. +IFS=' +' + +git_broken_path_fix () { + case ":$PATH:" in + *:$1:*) : ok ;; + *) + PATH=$( + SANE_TOOL_PATH="$1" + IFS=: path= sep= + set x $PATH + shift + for elem + do + case "$SANE_TOOL_PATH:$elem" in + (?*:/bin | ?*:/usr/bin) + path="$path$sep$SANE_TOOL_PATH" + sep=: + SANE_TOOL_PATH= + esac + path="$path$sep$elem" + sep=: + done + echo "$path" + ) + ;; + esac +} + +# @@BROKEN_PATH_FIX@@ + +# Source git-sh-i18n for gettext support. +. "$(git --exec-path)/git-sh-i18n" + +die () { + die_with_status 1 "$@" +} + +die_with_status () { + status=$1 + shift + printf >&2 '%s\n' "$*" + exit "$status" +} + +GIT_QUIET= + +say () { + if test -z "$GIT_QUIET" + then + printf '%s\n' "$*" + fi } if test -n "$OPTIONS_SPEC"; then @@ -25,6 +75,8 @@ if test -n "$OPTIONS_SPEC"; then parseopt_extra= [ -n "$OPTIONS_KEEPDASHDASH" ] && parseopt_extra="--keep-dashdash" + [ -n "$OPTIONS_STUCKLONG" ] && + parseopt_extra="$parseopt_extra --stuck-long" eval "$( echo "$OPTIONS_SPEC" | @@ -32,27 +84,61 @@ if test -n "$OPTIONS_SPEC"; then echo exit $? )" else - dashless=$(basename "$0" | sed -e 's/-/ /') + dashless=$(basename -- "$0" | sed -e 's/-/ /') usage() { - die "Usage: $dashless $USAGE" + die "$(eval_gettext "usage: \$dashless \$USAGE")" } if [ -z "$LONG_USAGE" ] then - LONG_USAGE="Usage: $dashless $USAGE" + LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE")" else - LONG_USAGE="Usage: $dashless $USAGE + LONG_USAGE="$(eval_gettext "usage: \$dashless \$USAGE -$LONG_USAGE" +$LONG_USAGE")" fi case "$1" in - -h|--h|--he|--hel|--help) + -h) echo "$LONG_USAGE" exit esac fi +# Set the name of the end-user facing command in the reflog when the +# script may update refs. When GIT_REFLOG_ACTION is already set, this +# will not overwrite it, so that a scripted Porcelain (e.g. "git +# rebase") can set it to its own name (e.g. "rebase") and then call +# another scripted Porcelain (e.g. "git am") and a call to this +# function in the latter will keep the name of the end-user facing +# program (e.g. "rebase") in GIT_REFLOG_ACTION, ensuring whatever it +# does will be record as actions done as part of the end-user facing +# operation (e.g. "rebase"). +# +# NOTE NOTE NOTE: consequently, after assigning a specific message to +# GIT_REFLOG_ACTION when calling a "git" command to record a custom +# reflog message, do not leave that custom value in GIT_REFLOG_ACTION, +# after you are done. Other callers of "git" commands that rely on +# writing the default "program name" in reflog expect the variable to +# contain the value set by this function. +# +# To use a custom reflog message, do either one of these three: +# +# (a) use a single-shot export form: +# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" \ +# git command-that-updates-a-ref +# +# (b) save the original away and restore: +# SAVED_ACTION=$GIT_REFLOG_ACTION +# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" +# git command-that-updates-a-ref +# GIT_REFLOG_ACITON=$SAVED_ACTION +# +# (c) assign the variable in a subshell: +# ( +# GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: preparing frotz" +# git command-that-updates-a-ref +# ) set_reflog_action() { if [ -z "${GIT_REFLOG_ACTION:+set}" ] then @@ -62,19 +148,36 @@ set_reflog_action() { } git_editor() { - : "${GIT_EDITOR:=$(git config core.editor)}" - : "${GIT_EDITOR:=${VISUAL:-${EDITOR}}}" - case "$GIT_EDITOR,$TERM" in - ,dumb) - echo >&2 "No editor specified in GIT_EDITOR, core.editor, VISUAL," - echo >&2 "or EDITOR. Tried to fall back to vi but terminal is dumb." - echo >&2 "Please set one of these variables to an appropriate" - echo >&2 "editor or run $0 with options that will not cause an" - echo >&2 "editor to be invoked (e.g., -m or -F for git-commit)." - exit 1 - ;; - esac - eval "${GIT_EDITOR:=vi}" '"$@"' + if test -z "${GIT_EDITOR:+set}" + then + GIT_EDITOR="$(git var GIT_EDITOR)" || return $? + fi + + eval "$GIT_EDITOR" '"$@"' +} + +git_pager() { + if test -t 1 + then + GIT_PAGER=$(git var GIT_PAGER) + else + GIT_PAGER=cat + fi + for vardef in @@PAGER_ENV@@ + do + var=${vardef%%=*} + eval ": \"\${$vardef}\" && export $var" + done + + eval "$GIT_PAGER" '"$@"' +} + +sane_grep () { + GREP_OPTIONS= LC_ALL=C grep @@SANE_TEXT_GREP@@ "$@" +} + +sane_egrep () { + GREP_OPTIONS= LC_ALL=C egrep @@SANE_TEXT_GREP@@ "$@" } is_bare_repository () { @@ -82,96 +185,214 @@ is_bare_repository () { } cd_to_toplevel () { - cdup=$(git rev-parse --show-cdup) - if test ! -z "$cdup" + cdup=$(git rev-parse --show-toplevel) && + cd "$cdup" || { + gettextln "Cannot chdir to \$cdup, the toplevel of the working tree" >&2 + exit 1 + } +} + +require_work_tree_exists () { + if test "z$(git rev-parse --is-bare-repository)" != zfalse then - case "$cdup" in - /*) - # Not quite the same as if we did "cd -P '$cdup'" when - # $cdup contains ".." after symlink path components. - # Don't fix that case at least until Git switches to - # "cd -P" across the board. - phys="$cdup" + program_name=$0 + die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")" + fi +} + +require_work_tree () { + test "$(git rev-parse --is-inside-work-tree 2>/dev/null)" = true || { + program_name=$0 + die "$(eval_gettext "fatal: \$program_name cannot be used without a working tree.")" + } +} + +require_clean_work_tree () { + git rev-parse --verify HEAD >/dev/null || exit 1 + git update-index -q --ignore-submodules --refresh + err=0 + + if ! git diff-files --quiet --ignore-submodules + then + action=$1 + case "$action" in + rebase) + gettextln "Cannot rebase: You have unstaged changes." >&2 ;; - ..|../*|*/..|*/../*) - # Interpret $cdup relative to the physical, not logical, cwd. - # Probably /bin/pwd is more portable than passing -P to cd or pwd. - phys="$(unset PWD; /bin/pwd)/$cdup" + "rewrite branches") + gettextln "Cannot rewrite branches: You have unstaged changes." >&2 + ;; + "pull with rebase") + gettextln "Cannot pull with rebase: You have unstaged changes." >&2 ;; *) - # There's no "..", so no need to make things absolute. - phys="$cdup" + eval_gettextln "Cannot \$action: You have unstaged changes." >&2 ;; esac + err=1 + fi - cd "$phys" || { - echo >&2 "Cannot chdir to $phys, the toplevel of the working tree" - exit 1 - } + if ! git diff-index --cached --quiet --ignore-submodules HEAD -- + then + if test $err = 0 + then + action=$1 + case "$action" in + rebase) + gettextln "Cannot rebase: Your index contains uncommitted changes." >&2 + ;; + "pull with rebase") + gettextln "Cannot pull with rebase: Your index contains uncommitted changes." >&2 + ;; + *) + eval_gettextln "Cannot \$action: Your index contains uncommitted changes." >&2 + ;; + esac + else + gettextln "Additionally, your index contains uncommitted changes." >&2 + fi + err=1 + fi + + if test $err = 1 + then + test -n "$2" && echo "$2" >&2 + exit 1 fi } -require_work_tree () { - test $(git rev-parse --is-inside-work-tree) = true || - die "fatal: $0 cannot be used without a working tree." +# Generate a sed script to parse identities from a commit. +# +# Reads the commit from stdin, which should be in raw format (e.g., from +# cat-file or "--pretty=raw"). +# +# The first argument specifies the ident line to parse (e.g., "author"), and +# the second specifies the environment variable to put it in (e.g., "AUTHOR" +# for "GIT_AUTHOR_*"). Multiple pairs can be given to parse author and +# committer. +pick_ident_script () { + while test $# -gt 0 + do + lid=$1; shift + uid=$1; shift + printf '%s' " + /^$lid /{ + s/'/'\\\\''/g + h + s/^$lid "'\([^<]*\) <[^>]*> .*$/\1/'" + s/.*/GIT_${uid}_NAME='&'/p + + g + s/^$lid "'[^<]* <\([^>]*\)> .*$/\1/'" + s/.*/GIT_${uid}_EMAIL='&'/p + + g + s/^$lid "'[^<]* <[^>]*> \(.*\)$/@\1/'" + s/.*/GIT_${uid}_DATE='&'/p + } + " + done + echo '/^$/q' } +# Create a pick-script as above and feed it to sed. Stdout is suitable for +# feeding to eval. +parse_ident_from_commit () { + LANG=C LC_ALL=C sed -ne "$(pick_ident_script "$@")" +} + +# Parse the author from a commit given as an argument. Stdout is suitable for +# feeding to eval to set the usual GIT_* ident variables. get_author_ident_from_commit () { - pick_author_script=' - /^author /{ - s/'\''/'\''\\'\'\''/g - h - s/^author \([^<]*\) <[^>]*> .*$/\1/ - s/'\''/'\''\'\'\''/g - s/.*/GIT_AUTHOR_NAME='\''&'\''/p - - g - s/^author [^<]* <\([^>]*\)> .*$/\1/ - s/'\''/'\''\'\'\''/g - s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p - - g - s/^author [^<]* <[^>]*> \(.*\)$/\1/ - s/'\''/'\''\'\'\''/g - s/.*/GIT_AUTHOR_DATE='\''&'\''/p - - q - } - ' encoding=$(git config i18n.commitencoding || echo UTF-8) git show -s --pretty=raw --encoding="$encoding" "$1" -- | - LANG=C LC_ALL=C sed -ne "$pick_author_script" + parse_ident_from_commit author AUTHOR +} + +# Clear repo-local GIT_* environment variables. Useful when switching to +# another repository (e.g. when entering a submodule). See also the env +# list in git_connect() +clear_local_git_env() { + unset $(git rev-parse --local-env-vars) +} + +# Generate a virtual base file for a two-file merge. Uses git apply to +# remove lines from $1 that are not in $2, leaving only common lines. +create_virtual_base() { + sz0=$(wc -c <"$1") + @@DIFF@@ -u -La/"$1" -Lb/"$1" "$1" "$2" | git apply --no-add + sz1=$(wc -c <"$1") + + # If we do not have enough common material, it is not + # worth trying two-file merge using common subsections. + expr $sz0 \< $sz1 \* 2 >/dev/null || : >"$1" } + +# Platform specific tweaks to work around some commands +case $(uname -s) in +*MINGW*) + # Windows has its own (incompatible) sort and find + sort () { + /usr/bin/sort "$@" + } + find () { + /usr/bin/find "$@" + } + # git sees Windows-style pwd + pwd () { + builtin pwd -W + } + is_absolute_path () { + case "$1" in + [/\\]* | [A-Za-z]:*) + return 0 ;; + esac + return 1 + } + ;; +*) + is_absolute_path () { + case "$1" in + /*) + return 0 ;; + esac + return 1 + } +esac + # Make sure we are in a valid repository of a vintage we understand, # if we require to be in a git repository. -if test -z "$NONGIT_OK" -then +git_dir_init () { GIT_DIR=$(git rev-parse --git-dir) || exit if [ -z "$SUBDIRECTORY_OK" ] then test -z "$(git rev-parse --show-cdup)" || { exit=$? - echo >&2 "You need to run this command from the toplevel of the working tree." + gettextln "You need to run this command from the toplevel of the working tree." >&2 exit $exit } fi test -n "$GIT_DIR" && GIT_DIR=$(cd "$GIT_DIR" && pwd) || { - echo >&2 "Unable to determine absolute path of git directory" + gettextln "Unable to determine absolute path of git directory" >&2 exit 1 } - : ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"} + : "${GIT_OBJECT_DIRECTORY="$(git rev-parse --git-path objects)"}" +} + +if test -z "$NONGIT_OK" +then + git_dir_init fi -# Fix some commands on Windows -case $(uname -s) in -*MINGW*) - # Windows has its own (incompatible) sort and find - sort () { - /usr/bin/sort "$@" - } - find () { - /usr/bin/find "$@" - } - ;; -esac +peel_committish () { + case "$1" in + :/*) + peeltmp=$(git rev-parse --verify "$1") && + git rev-parse --verify "${peeltmp}^0" + ;; + *) + git rev-parse --verify "${1}^0" + ;; + esac +} |