118 lines
3 KiB
Bash
Executable file
118 lines
3 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (C) 2014 Joey Hess <id@joeyh.name>
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# Copyright (C) 2016 Klaus Ethgen <Klaus@Ethgen.ch>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This script can be used to add git-annex metadata to files when they're
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# committed. It is typically installed as .git/hooks/pre-commit-annex
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#
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# You can also run this script by hand, passing it the names of files
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# already checked into git-annex, and it will extract/refresh the git-annex
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# metadata from the files.
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tool="$(git config metadata.tool || :)"
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if [ -z "$tool" ]; then
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tool=extract
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fi
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case "$tool" in
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exiftool)
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tool_exec="exiftool -unknown -zip -veryShort -ignoreMinorErrors -use MWG -dateFormat '%Y-%m-%dT%H:%M:%S'"
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;;
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*)
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tool_exec="$tool"
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;;
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esac
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extract_fields="$(git config metadata.extract || :)"
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if [ -n "$extract_fields" ]; then
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tools=extract
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extract_want="^($(echo "$extract_fields" | sed -e 's/ /|/g' -e 's/_/ /g'))"
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fi
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exiftool_fields="$(git config metadata.exiftool || :)"
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if [ -n "$exiftool_fields" ]; then
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tools="exiftool $tools"
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exiftool_want="^($(echo "$exiftool_fields" | sed -e 's/ /|/g' -e 's/_/ /g'))"
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fi
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if [ -z "$tools" ]; then
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exit 0
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fi
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case "$(git config --bool metadata.overwrite || :)" in
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true)
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equal="="
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;;
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*)
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equal="?="
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;;
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esac
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if git rev-parse --verify HEAD >/dev/null 2>&1; then
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against="HEAD"
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else
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# Initial commit: diff against an empty tree object
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against="4b825dc642cb6eb9a060e54bf8d69288fbee4904"
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fi
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addmeta() {
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file="$1"
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field="$2"
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value="$3"
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afield="$(echo "$field" | tr ' ' '_')"
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git -c annex.alwayscommit=false annex metadata \
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--set "$afield$equal$value" --quiet -- "$file"
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}
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process() {
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if [ -e "$f" ]; then
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echo "adding metadata for $f"
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for tool in $tools; do
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case "$tool" in
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exiftool)
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tool_exec="exiftool -unknown -zip -veryShort -ignoreMinorErrors -use MWG -dateFormat '%Y-%m-%dT%H:%M:%S'"
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;;
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*)
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tool_exec="$tool"
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;;
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esac
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LC_ALL=C $tool_exec "./$f" | eval egrep --text -i \""\$${tool}_want"\" | while read line; do
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case "$tool" in
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extract)
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field="${line%% - *}"
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value="${line#* - }"
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;;
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exiftool)
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field="${line%%: *}"
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value="${line#*: }"
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;;
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esac
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if [ -n "$value" ]; then
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addmeta "$f" "$field" "$value"
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fi
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done
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done
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fi
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}
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if [ -n "$*" ]; then
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for f in "$@"; do
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process "$f"
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done
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else
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git diff-index --name-only --cached $against | while read f; do
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process "$f"
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done
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fi
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