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#!/usr/bin/perl
#
# $Id$
#
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 <<NO_MORE_HELP;
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: $!, crapped out at";
foreach (<PATTERNS>)
{
chop;
s/#.*//;
next if /^$/;
($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: $!";
$line = join('',<INFILE>) ;
close INFILE;
print STDERR "$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;
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