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57b178102c
- Use $ZSH_CACHE_DIR to store the grep alias with all the right features - Expire the cache after 24 hours - See issue #8444
40 lines
1.2 KiB
Bash
40 lines
1.2 KiB
Bash
# see if we already cached the grep alias in past day
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_grep_alias_cache=("$ZSH_CACHE_DIR"/grep_alias.zsh(Nm-24))
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if (( $#_grep_alias_cache )); then
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source "$ZSH_CACHE_DIR"/grep_alias.zsh
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else
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# is x grep argument available?
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grep-flag-available() {
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echo | grep $1 "" >/dev/null 2>&1
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}
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GREP_OPTIONS=""
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# color grep results
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if grep-flag-available --color=auto; then
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GREP_OPTIONS+=" --color=auto"
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fi
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# ignore these folders (if the necessary grep flags are available)
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EXC_FOLDERS="{.bzr,CVS,.git,.hg,.svn,.idea,.tox}"
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if grep-flag-available --exclude-dir=.cvs; then
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GREP_OPTIONS+=" --exclude-dir=$EXC_FOLDERS"
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elif grep-flag-available --exclude=.cvs; then
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GREP_OPTIONS+=" --exclude=$EXC_FOLDERS"
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fi
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{
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# export grep, egrep and fgrep settings
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echo alias grep="'grep $GREP_OPTIONS'"
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echo alias egrep="'egrep $GREP_OPTIONS'"
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echo alias fgrep="'fgrep $GREP_OPTIONS'"
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} > "$ZSH_CACHE_DIR/grep_alias.zsh"
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source "$ZSH_CACHE_DIR/grep_alias.zsh"
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# clean up
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unset GREP_OPTIONS EXC_FOLDERS
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unfunction grep-flag-available
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fi
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unset _grep_alias_cache
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