ack + context for php

cack

#!/bin/bash
# A wrapper for ack to provide context for results; i.e. name of surrounding function or class

# context regex: match lines that qualify as "context"
# this could certainly be improved but it's okay for now
CONT='\<function\>.*(\|\<class\s\+[a-zA-Z_]\+'

proceed() {
    while read LINE; do

        # just repeat blank lines
        if [ -z "$LINE" ]; then
            echo "$LINE"
            continue
        fi

        # is the line already a "context" line?
        IS_CONT=$(echo "$LINE" | grep "$CONT")
        if [ -n "$IS_CONT" ]; then
            echo "$LINE"
            continue
        fi

        # grab location
        FILE=$(echo "$LINE" | sed 's/^\s*\([^:]\+\):[0-9]\+:.*$/\1/')
        LINE_NUM=$(echo "$LINE" | sed 's/^[^:]\+:\([0-9]\+\).*$/\1/')

        # nothing found?
        if [ -z "$FILE" -o -z "$LINE_NUM" ]; then
            echo "$LINE"
            continue
        fi

        # look for context
        SEARCH=$(head "$FILE" -n "$LINE_NUM" 2>/dev/null | tac | grep -m 1 "$CONT" | sed 's/^M$//')

        if [ -n "$SEARCH" ]; then
            echo "--$SEARCH"
        fi

        echo "$LINE"
    done
}

# This tool can be called as ack, or can have ack output passed to it:
if [ -n "$*" ]; then
    ack "$@" | proceed
else
    proceed
fi