78 lines
1.8 KiB
Bash
Executable File
78 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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set -eu
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set -o pipefail
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cols=$(tput cols)
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readlink_f() {
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if [ $(uname) = 'Darwin' ]
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then
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local d=$(echo "${1%/*}")
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local f=$(basename "$1")
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(cd "$d" && echo "$(pwd -P)/$f")
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else
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readlink -f "$1"
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fi
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}
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addattr() {
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ext="$1"
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if ! grep -qE "^\*.$ext diff=image\$" "$attributesfile"
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then
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if grep -qE "^\*.$ext" "$attributesfile"
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then
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fold -s -w$cols >&2 <<EOS
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$attributesfile already has *.$ext configured, but not the way that this script requires.
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If you want to use git-image-diff with $ext files, you must add a diff=image attribute yourself.
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EOS
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else
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echo "+ echo '*.$ext diff=image' >>'$attributesfile'"
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echo "*.$ext diff=image" >>"$attributesfile"
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fi
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fi
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}
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thisdir=$(dirname $(readlink_f "$0"))
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thisdir_tilde="${thisdir/#$HOME/~}"
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attributesfile_tilde=$(git config --global core.attributesfile || true)
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attributesfile="${attributesfile_tilde/#\~/$HOME}"
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if [ -z "$attributesfile" ]
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then
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attributesfile="$HOME/.gitattributes"
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attributesfile_tilde="~/.gitattributes"
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echo "+ git config --global core.attributesfile '$attributesfile_tilde'"
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git config --global core.attributesfile "$attributesfile_tilde"
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fi
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if [ ! -f "$attributesfile" ]
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then
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if [ ! -e "$attributesfile" ]
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then
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echo "+ touch '$attributesfile'"
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touch "$attributesfile"
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else
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echo "$attributesfile is not a regular file! I give up." >&2
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exit 1
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fi
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fi
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addattr gif
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addattr jpeg
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addattr jpg
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addattr png
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echo '+ git config --global alias.diff-image '"'"'!f() { GIT_DIFF_IMAGE_ENABLED=1 git diff "$@"; }; f'"'"
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git config --global alias.diff-image '!f() { GIT_DIFF_IMAGE_ENABLED=1 git diff "$@"; }; f'
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echo "+ git config --global diff.image.command '$thisdir_tilde/git_diff_image'"
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git config --global diff.image.command "$thisdir_tilde/git_diff_image"
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