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#!/usr/bin/perl

#

#  word-replace2,v 1.4 2002/01/17 21:47:47 joel Exp

#

eval "exec /usr/local/bin/perl -S $0 $*"

    if $running_under_some_shell;

require 'getopts.pl';

&Getopts("p:vh");               # help, pattern file, verbose,

if ($opt_h || ! $opt_p) {

    print STDERR <

word-replace2

   Replace *words* with patterns.   Pattern file specifies which patterns

   to replace on each line.  All patterns are wrapped with perl \\b regexp

   specifiers.

Usage: $0       [-v] -p pattern-file files to replace

    -v          -- possibly more verbose

    -p file     -- pattern file

    -h          -- help

    anything else == this help message

Pattern file looks like this:

# Example:

# ignores all lines with beginning with # or not exactly 2 fields

_Dorky_Name  rtems_dorky_name           # comments, and blank lines are cool

_Dorky_Name2 rtems_dorky_name2          # comments, and blank lines are cool

NO_MORE_HELP

    exit 0;

}

$verbose = $opt_v;

$pattern_file = $opt_p;

# make standard outputs unbuffered (so the '.'s come out ok)

$oldfh = select(STDERR); $| = 1; select($oldfh);

$oldfh = select(STDOUT); $| = 1; select($oldfh);

# pull in the patterns

open(PATTERNS, "<$pattern_file") ||

    die "could not open $pattern_file: $!, crapped out at";

foreach ()

{

    chop;

    s/#.*//;

    next if /^$/;

    ($orig, $new, $junk, @rest) = split;

    next if ( ! $orig || ! $new || $junk); # <2 or >2 patterns

    die "pattern appears 2x: '$orig' in '$pattern_file'--" if defined($patterns{$orig});

    $patterns{$orig} = $new;

}

close PATTERNS;

# walk thru each line in each file

$infile = '-' ;

$outfile = '-' ;

if ( $#ARGV > -1 )

{

  $infile = "@ARGV[0]" ;

  shift @ARGV ;

}

if ( $#ARGV > -1 )

{

  $outfile = "@ARGV[0]" ;

  shift @ARGV ;

}

open (INFILE, "<$infile") ||

        die "could not open input file $infile: $!";

$line = join('',) ;

close INFILE;

print STDERR "$outfile\t";

open (OUTFILE, ">$outfile") ||

        die "could not open output file $outfile: $!";

foreach $key (keys %patterns)

{

  if ( $line =~ s/\b$key\b/$patterns{$key}/ge )

  {

    print STDERR "." ;

  }

}

print OUTFILE $line ;

print STDERR "\n";

close OUTFILE;