42 lines
1.4 KiB
Bash
42 lines
1.4 KiB
Bash
__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="egrep $GREP_OPTIONS"
|
|
alias fgrep="fgrep $GREP_OPTIONS"
|
|
|
|
# write to cache file if cache directory is writable
|
|
if [[ -w "$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
|