X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=src%2Fssic.pl;h=f9744a95d800ca38d2b46fa13692154a5166a0bd;hb=87f192ab8edd589c14c609d45fad4c73852caadf;hp=553f83d00162787b840086237886d91e2df5ff4b;hpb=87ad3d52c3d06311e0fdd87dc654408ee746c45c;p=ssic.git

diff --git a/src/ssic.pl b/src/ssic.pl
old mode 100644
new mode 100755
index 553f83d..f9744a9
--- a/src/ssic.pl
+++ b/src/ssic.pl
@@ -1,4 +1,19 @@
 #!/usr/bin/perl
+#
+# 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;
@@ -9,6 +24,7 @@ use CGI::SSI;
 sub main
 {
 	my %opts;
+	my $ssi;
 	my $input;
 	my $output;
 
@@ -19,6 +35,7 @@ sub main
 	if (not GetOptions(\%opts,
 			"o=s",
 			"D=s%",
+			"I=s",
 			"h|help",
 			"V|version",
 		)) {
@@ -27,29 +44,34 @@ sub main
 	}
 
 	if (exists($opts{'h'})) {
-		help(*STDERR);
+		help(*STDOUT);
 		exit(0);
 	}
 	if (exists($opts{'V'})) {
-		version(*STDERR);
+		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 ($#ARGV gt 0) {
 			error(4, "Cannot specify -o with multiple files\n");
 		}
-		compile($ARGV[0], $opts{'o'}, $opts{'D'});
+		compile($ssi, $ARGV[0], $opts{'o'});
 	} else {
 		for $input (@ARGV) {
 			$output = $input;
 			$output =~ s/\.[^.]+$/.html/;
-			compile($input, $output, $opts{'D'});
+			compile($ssi, $input, $output);
 		}
 	}
+
+	undef $ssi;
 }
 
 sub usage
@@ -66,6 +88,7 @@ sub help
 	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");
@@ -86,55 +109,95 @@ sub version
 
 sub warning
 {
-	my ($fmt, $args) = @_;
+	my ($fmt, @args) = @_;
 
-	printf("ssic: Warning: " . $fmt, $args);
+	printf(STDERR "ssic: Warning: " . $fmt, @args);
 }
 
 sub error
 {
-	my ($status, $fmt, $args) = @_;
+	my ($status, $fmt, @args) = @_;
 
-	printf("ssic: Error: " . $fmt, $args);
+	printf(STDERR "ssic: Error: " . $fmt, @args);
 	exit($status);
 }
 
-sub compile
+sub init_compiler
 {
-	my ($input, $output, $vars) = @_;
-	my $input_fh;
-	my $output_fh;
+	my ($vars, $root) = @_;
 	my $ssi;
 	my $var_name;
 	my $var_value;
 
-	if ($input eq $output) {
-		error(4, "Input and output files are equal\n");
-	}
-
-	if (not open($input_fh, "<", $input)) {
-		error(4, "%s: %s\n", $input, $!);
-	}
-	if (not open($output_fh, ">", $output)) {
-		error(4, "%s: %s\n", $output, $!);
-	}
-
 	%ENV = (
-		"DOCUMENT_NAME" => $input,
-		"DOCUMENT_URI" => $input,
+		"DOCUMENT_ROOT" => $root,
 	);
 
 	$CGI::SSI::DEBUG = 0;
-	$ssi = CGI::SSI->new(
-		"DOCUMENT_NAME" => $input,
-		"DOCUMENT_URI" => $input,
-	);
+	$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();