107 lines
2.2 KiB
Perl
107 lines
2.2 KiB
Perl
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# Copyright (c) 2021-2023, PostgreSQL Global Development Group
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# src/pl/plperl/text2macro.pl
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=head1 NAME
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text2macro.pl - convert text files into C string-literal macro definitions
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=head1 SYNOPSIS
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text2macro [options] file ... > output.h
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Options:
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--prefix=S - add prefix S to the names of the macros
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--name=S - use S as the macro name (assumes only one file)
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--strip=S - don't include lines that match perl regex S
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=head1 DESCRIPTION
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Reads one or more text files and outputs a corresponding series of C
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pre-processor macro definitions. Each macro defines a string literal that
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contains the contents of the corresponding text file. The basename of the text
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file as capitalized and used as the name of the macro, along with an optional prefix.
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=cut
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use strict;
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use warnings;
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use Getopt::Long;
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GetOptions(
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'prefix=s' => \my $opt_prefix,
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'name=s' => \my $opt_name,
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'strip=s' => \my $opt_strip,
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'selftest!' => sub { exit selftest() },) or exit 1;
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die "No text files specified"
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unless @ARGV;
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print qq{
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/*
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* DO NOT EDIT - THIS FILE IS AUTOGENERATED - CHANGES WILL BE LOST
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* Generated by src/pl/plperl/text2macro.pl
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*/
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};
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for my $src_file (@ARGV)
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{
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(my $macro = $src_file) =~ s/ .*? (\w+) (?:\.\w+) $/$1/x;
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open my $src_fh, '<', $src_file
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or die "Can't open $src_file: $!";
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printf qq{#define %s%s \\\n},
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$opt_prefix || '',
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($opt_name) ? $opt_name : uc $macro;
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while (<$src_fh>)
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{
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chomp;
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next if $opt_strip and m/$opt_strip/o;
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# escape the text to suite C string literal rules
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s/\\/\\\\/g;
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s/"/\\"/g;
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printf qq{"%s\\n" \\\n}, $_;
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}
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print qq{""\n\n};
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}
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print "/* end */\n";
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exit 0;
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sub selftest
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{
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my $tmp = "text2macro_tmp";
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my $string = q{a '' '\\'' "" "\\"" "\\\\" "\\\\n" b};
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open my $fh, '>', "$tmp.pl" or die;
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print $fh $string;
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close $fh;
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system("perl $0 --name=X $tmp.pl > $tmp.c") == 0 or die;
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open $fh, '>>', "$tmp.c";
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print $fh "#include <stdio.h>\n";
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print $fh "int main() { puts(X); return 0; }\n";
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close $fh;
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system("cat -n $tmp.c");
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system("make $tmp") == 0 or die;
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open $fh, '<', "./$tmp |" or die;
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my $result = <$fh>;
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unlink <$tmp.*>;
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warn "Test string: $string\n";
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warn "Result : $result";
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die "Failed!" if $result ne "$string\n";
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return;
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}
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