dotfiles/zsh/.oh-my-zsh/lib/grep.zsh

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2024-06-19 00:06:56 +02:00
__GREP_CACHE_FILE="$ZSH_CACHE_DIR"/grep-alias
# See if there's a cache file modified in the last day
__GREP_ALIAS_CACHES=("$__GREP_CACHE_FILE"(Nm-1))
if [[ -n "$__GREP_ALIAS_CACHES" ]]; then
source "$__GREP_CACHE_FILE"
else
grep-flags-available() {
command grep "$@" "" &>/dev/null <<< ""
}
# Ignore these folders (if the necessary grep flags are available)
EXC_FOLDERS="{.bzr,CVS,.git,.hg,.svn,.idea,.tox}"
# Check for --exclude-dir, otherwise check for --exclude. If --exclude
# isn't available, --color won't be either (they were released at the same
# time (v2.5): https://git.savannah.gnu.org/cgit/grep.git/tree/NEWS?id=1236f007
if grep-flags-available --color=auto --exclude-dir=.cvs; then
GREP_OPTIONS="--color=auto --exclude-dir=$EXC_FOLDERS"
elif grep-flags-available --color=auto --exclude=.cvs; then
GREP_OPTIONS="--color=auto --exclude=$EXC_FOLDERS"
fi
if [[ -n "$GREP_OPTIONS" ]]; then
# export grep, egrep and fgrep settings
alias grep="grep $GREP_OPTIONS"
alias egrep="grep -E $GREP_OPTIONS"
alias fgrep="grep -F $GREP_OPTIONS"
# write to cache file if cache directory is writable
if [[ -w "$ZSH_CACHE_DIR" ]]; then
alias -L grep egrep fgrep >| "$__GREP_CACHE_FILE"
fi
fi
# Clean up
unset GREP_OPTIONS EXC_FOLDERS
unfunction grep-flags-available
fi
unset __GREP_CACHE_FILE __GREP_ALIAS_CACHES