Support for the standard mime.types map in gitweb

gitweb will try to look up the filename mimetype in /etc/mime.types
and optionally a user-configured mime.types map as well.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/gitweb/gitweb.cgi b/gitweb/gitweb.cgi
index 8fde1c8833c87b64030d46cd769c340594bc6d5f..fa90c51a4da437b8fa8bfd159ec7f0cad0596e37 100755 (executable)
--- a/gitweb/gitweb.cgi
+++ b/gitweb/gitweb.cgi
@@ -49,6 +49,11 @@ my $projects_list =  "index/index.aux";
 my $default_blob_plain_mimetype = 'text/plain';
 my $default_text_plain_charset  = undef;
 
+# file to use for guessing MIME types before trying /etc/mime.types
+# (relative to the current git repository)
+my $mimetypes_file              = undef;
+
+
 # input validation and dispatch
 my $action = $cgi->param('a');
 if (defined $action) {
@@ -1486,6 +1491,40 @@ sub git_blob {
        git_footer_html();
 }
 
+sub mimetype_guess_file {
+       my $filename = shift;
+       my $mimemap = shift;
+       -r $mimemap or return undef;
+
+       my %mimemap;
+       open(MIME, $mimemap) or return undef;
+       while (<MIME>) {
+               my ($mime, $exts) = split(/\t+/);
+               my @exts = split(/\s+/, $exts);
+               foreach my $ext (@exts) {
+                       $mimemap{$ext} = $mime;
+               }
+       }
+       close(MIME);
+
+       $filename =~ /\.(.*?)$/;
+       return $mimemap{$1};
+}
+
+sub mimetype_guess {
+       my $filename = shift;
+       my $mime;
+       $filename =~ /\./ or return undef;
+
+       if ($mimetypes_file) {
+               my $file = $mimetypes_file;
+               $file =~ m#^/# or $file = "$projectroot/$path/$file";
+               $mime = mimetype_guess_file($filename, $file);
+       }
+       $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
+       return $mime;
+}
+
 sub git_blob_plain_mimetype {
        my $fd = shift;
        my $filename = shift;
@@ -1493,6 +1532,11 @@ sub git_blob_plain_mimetype {
        # just in case
        return $default_blob_plain_mimetype unless $fd;
 
+       if ($filename) {
+               my $mime = mimetype_guess($filename);
+               $mime and return $mime;
+       }
+
        if (-T $fd) {
                return 'text/plain' .
                       ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');