diff options
Diffstat (limited to 'bin/ssic')
| -rwxr-xr-x | bin/ssic | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/bin/ssic b/bin/ssic new file mode 100755 index 0000000..a88e565 --- /dev/null +++ b/bin/ssic @@ -0,0 +1,205 @@ +#!/usr/bin/perl +# +# ssic - Server Side Includes Compiler +# +# Copyright (C) 2013 Patrick "P. J." McDermott +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +use strict; +use warnings; + +use Getopt::Long; +use CGI::SSI; + +sub main +{ + my %opts; + my $ssi; + my $input; + my $output; + + $SIG{'__WARN__'} = \&warning; + + Getopt::Long::Configure("no_ignore_case", "bundling", "gnu_compat", + "no_getopt_compat"); + if (not GetOptions(\%opts, + "o=s", + "D=s%", + "I=s", + "h|help", + "V|version", + )) { + usage(*STDERR); + exit(4); + } + + if (exists($opts{'h'})) { + help(*STDOUT); + exit(0); + } + if (exists($opts{'V'})) { + version(*STDOUT); + exit(0); + } + + if ($#ARGV lt 0) { + error(4, "No input files\n"); + } + + $ssi = init_compiler($opts{'D'}, $opts{'I'}); + + if (exists($opts{'o'})) { + if ($#ARGV gt 0) { + error(4, "Cannot specify -o with multiple files\n"); + } + compile($ssi, $ARGV[0], $opts{'o'}); + } else { + for $input (@ARGV) { + $output = $input; + $output =~ s/\.[^.]+$/.html/; + compile($ssi, $input, $output); + } + } + + undef $ssi; +} + +sub usage +{ + my ($fh) = @_; + + printf($fh "Usage: %s [-o <output>] <input> ...\n", $0); +} + +sub help +{ + my ($fh) = @_; + + usage($fh); + print("Options:\n"); + print(" -D <name>=<value> Set the variable <name> to <value>\n"); + print(" -I <directory> Set the document root to <directory>\n"); + print(" -o <output> Place the output into <output>\n"); + print(" -h, --help Display this information\n"); + print(" -V, --version Display compiler version information\n"); +} + +sub version +{ + my ($fh) = @_; + + print("ssic 0.1.0\n"); + print("Copyright (C) 2013 Patrick \"P. J.\" McDermott\n"); + print("License GPLv3+: GNU GPL version 3 or later " . + "<http://gnu.org/licenses/gpl.html>.\n"); + print("This is free software: you are free to change and " . + "redistribute it.\n"); + print("There is NO WARRANTY, to the extent permitted by law.\n"); +} + +sub warning +{ + my ($fmt, @args) = @_; + + printf(STDERR "ssic: Warning: " . $fmt, @args); +} + +sub error +{ + my ($status, $fmt, @args) = @_; + + printf(STDERR "ssic: Error: " . $fmt, @args); + exit($status); +} + +sub init_compiler +{ + my ($vars, $root) = @_; + my $ssi; + my $var_name; + my $var_value; + + %ENV = ( + "DOCUMENT_ROOT" => $root, + ); + + $CGI::SSI::DEBUG = 0; + $ssi = CGI::SSI->new(); + + $ssi->set("DOCUMENT_ROOT" => $root); + + while (($var_name, $var_value) = each(%{$vars})) { + $ssi->set($var_name => $var_value); + } + + return $ssi; +} + +sub compile +{ + my ($ssi, $input, $output) = @_; + my $input_fh; + my $input_abs; + my $output_fh; + + if ($input eq $output and $input ne "-") { + warning("Input and output files are equal\n"); + } + + if ($input eq "-") { + $input_fh = *STDIN; + $input_abs = File::Spec->rel2abs("."); + } else { + if (not open($input_fh, "<", $input)) { + error(4, "%s: %s\n", $input, $!); + } + $input_abs = File::Spec->rel2abs($input); + } + if ($output eq "-") { + $output_fh = *STDOUT; + } else { + if (not open($output_fh, ">", $output . "~")) { + error(4, "%s: %s\n", $output . "~", $!); + } + } + + # CGI::SSI uses SCRIPT_FILENAME to determine the value of LAST_MODIFIED. + $ENV{"DOCUMENT_NAME"} = $input; + $ENV{"DOCUMENT_URI"} = $input; + $ENV{"SCRIPT_FILENAME"} = $input_abs; + + # Reset config tags to default values. + $ssi->config("errmsg", + "[an error occurred while processing this directive]"); + $ssi->config("sizefmt", "abbrev"); + $ssi->config("timefmt", undef); + + $ssi->set("DOCUMENT_NAME" => $input); + $ssi->set("DOCUMENT_URI" => $input); + + print($output_fh $ssi->process(<$input_fh>)); + + if ($input ne "-") { + close($input_fh); + } + if ($output ne "-") { + close($output_fh); + if (not rename($output . "~", $output)) { + error(4, "%s: %s\n", $output, $!); + } + } +} + +main(); |