-#!/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
# But we protect ourselves from such a user mistake nevertheless.
unset CDPATH
-# Similarly for IFS
-unset IFS
+# 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
die_with_status () {
status=$1
shift
- echo >&2 "$*"
+ printf >&2 '%s\n' "$*"
exit "$status"
}
parseopt_extra=
[ -n "$OPTIONS_KEEPDASHDASH" ] &&
parseopt_extra="--keep-dashdash"
+ [ -n "$OPTIONS_STUCKLONG" ] &&
+ parseopt_extra="$parseopt_extra --stuck-long"
eval "$(
echo "$OPTIONS_SPEC" |
else
dashless=$(basename "$0" | sed -e 's/-/ /')
usage() {
- die "Usage: $dashless $USAGE"
+ die "usage: $dashless $USAGE"
}
if [ -z "$LONG_USAGE" ]
then
- LONG_USAGE="Usage: $dashless $USAGE"
+ LONG_USAGE="usage: $dashless $USAGE"
else
- LONG_USAGE="Usage: $dashless $USAGE
+ LONG_USAGE="usage: $dashless $USAGE
$LONG_USAGE"
fi
esac
fi
+# Set the name of the end-user facing command in the reflog when the
+# script may update refs. When GIT_REFLOG_ACTION is already set, this
+# will not overwrite it, so that a scripted Porcelain (e.g. "git
+# rebase") can set it to its own name (e.g. "rebase") and then call
+# another scripted Porcelain (e.g. "git am") and a call to this
+# function in the latter will keep the name of the end-user facing
+# program (e.g. "rebase") in GIT_REFLOG_ACTION, ensuring whatever it
+# does will be record as actions done as part of the end-user facing
+# operation (e.g. "rebase").
+#
+# NOTE NOTE NOTE: consequently, after assigning a specific message to
+# GIT_REFLOG_ACTION when calling a "git" command to record a custom
+# reflog message, do not leave that custom value in GIT_REFLOG_ACTION,
+# after you are done. Other callers of "git" commands that rely on
+# writing the default "program name" in reflog expect the variable to
+# contain the value set by this function.
+#
+# To use a custom reflog message, do either one of these three:
+#
+# (a) use a single-shot export form:
+# GIT_REFLOG_ACTION="$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
GIT_PAGER=cat
fi
: ${LESS=-FRSX}
- export LESS
+ : ${LV=-c}
+ export LESS LV
eval "$GIT_PAGER" '"$@"'
}
fi
}
+# 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/.*/GIT_AUTHOR_NAME='\''&'\''/p
-
- g
- s/^author [^<]* <\([^>]*\)> .*$/\1/
- s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
-
- g
- s/^author [^<]* <[^>]*> \(.*\)$/@\1/
- s/.*/GIT_AUTHOR_DATE='\''&'\''/p
-
- q
- }
- '
encoding=$(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
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
}
: ${GIT_OBJECT_DIRECTORY="$GIT_DIR/objects"}
fi
+
+peel_committish () {
+ case "$1" in
+ :/*)
+ peeltmp=$(git rev-parse --verify "$1") &&
+ git rev-parse --verify "${peeltmp}^0"
+ ;;
+ *)
+ git rev-parse --verify "${1}^0"
+ ;;
+ esac
+}
projects / platform / upstream / git.git / blobdiff