contrib/client-side/wcgrep

   1 #!/bin/bash
   2
   3 # Copyright 2004 Ben Reser <ben@reser.org>
   4 # Licensed under the terms subversion ships under or GPLv2.
   5
   6 # Useful for greping in a subversion working copy.
   7 # Essentially it behaves the same way your grep command does (in fact it
   8 # ultimately calls the grep command on your path) with a few exceptions.
   9 # Ignores the subversion admin directories (.svn) and vi(m) backup files.
  10 # Recursive is always on with or without -r.
  11 # Always print filename and line numbers.
  12 # Ignores binary files.
  13 # If no path is given the current working directory is searched not stdin.
  14 # Other than that it will take any parameter or pattern your standard grep
  15 # does.
  16 #
  17 # This script requires GNU findutils and by default GNU grep (though that
  18 # can be changed with environment variables).
  19 #
  20 # There are three environment variables you can set that modify the default
  21 # behavior:
  22 #
  23 # WCGREP_GREP      Controls what command is used for the grep command.
  24 #                  If unset or null wcgrep will use the command named grep.
  25 # WCGREP_GREPARGS  Controls what arguments are always passed to the grep
  26 #                  command before the arguments given on the command line.
  27 #                  If unset or null it defaults to -HnI (always print file
  28 #                  names, line numbers and ignore binary files).  If you wish
  29 #                  to set no default args set the variable to a space (" ").
  30 # WCGREP_IGNORE    Controls what files are ignored by the grep command.
  31 #                  This is a regex that is passed to the find command with
  32 #                  -regex so see find's man page for details.  If unset or
  33 #                  null defaults to '.*~$\|.*/\.svn\(/\|$\)', which will
  34 #                  ignore vim backup files and subversion admin dirs.
  35
  36
  37 arg_count=$#
  38 for (( i=1; i <= $arg_count; i++ )); do
  39     arg="$1"
  40     shift 1
  41     if [ -z "$pattern" ]; then
  42         if [ "$arg" == "--" ]; then
  43             grepargs="$grepargs $arg"
  44             pattern="$1"
  45             shift 1
  46             ((i++))
  47         elif [ "${arg:0:1}" != "-" ]; then
  48             pattern="$arg"
  49         else
  50             grepargs="$grepargs $arg"
  51         fi
  52     else
  53         pathargs="$pathargs $arg"
  54     fi
  55 done
  56
  57 find $pathargs -regex ${WCGREP_IGNORE:-'.*~$\|.*/\.svn\(/\|$\)'} -prune -o \
  58     -type f -print0 | xargs -r0 ${WCGREP_GREP:-grep} ${WCGREP_GREPARGS:--HnI} \
  59     $grepargs "$pattern"