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author | Biswakalyan Bhuyan <biswa@surgot.in> | 2022-10-03 21:42:20 +0530 |
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committer | Biswakalyan Bhuyan <biswa@surgot.in> | 2022-10-03 21:42:20 +0530 |
commit | af120ab348f2e1a5a39dec035ed9dcf84189a64e (patch) | |
tree | 2a3aadd7ce1b7b771dfe3fe7c983569726c8d7ed /zsh/oh-my-zsh/lib/grep.zsh | |
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Diffstat (limited to 'zsh/oh-my-zsh/lib/grep.zsh')
-rw-r--r-- | zsh/oh-my-zsh/lib/grep.zsh | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/zsh/oh-my-zsh/lib/grep.zsh b/zsh/oh-my-zsh/lib/grep.zsh new file mode 100644 index 0000000..a725e0f --- /dev/null +++ b/zsh/oh-my-zsh/lib/grep.zsh @@ -0,0 +1,41 @@ +__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 |