improve error message

[ikiwiki.git] / IkiWiki / Plugin / img.pm

diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm
index 49e1d57d61b49a3eb0faa7740a2a3a5c74fd744b..44d67bd8375057e77d5853ee93cdd7943108ed14 100644 (file)
--- a/IkiWiki/Plugin/img.pm
+++ b/IkiWiki/Plugin/img.pm
@@ -5,15 +5,24 @@ package IkiWiki::Plugin::img;
 
 use warnings;
 use strict;
-use IkiWiki 2.00;
+use IkiWiki 3.00;
 
 my %imgdefaults;
 
-sub import { #{{{
+sub import {
+       hook(type => "getsetup", id => "img", call => \&getsetup);
        hook(type => "preprocess", id => "img", call => \&preprocess, scan => 1);
-} #}}}
+}
 
-sub preprocess (@) { #{{{
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+               },
+}
+
+sub preprocess (@) {
        my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint
        my %params=@_;
 
@@ -34,43 +43,48 @@ sub preprocess (@) { #{{{
                return '';
        }
 
-       push @{$links{$params{page}}}, $image;
+       add_link($params{page}, $image);
        # optimisation: detect scan mode, and avoid generating the image
        if (! defined wantarray) {
                return;
        }
 
        my $file = bestlink($params{page}, $image);
+       my $srcfile = srcfile($file, 1);
+       if (! length $file || ! defined $srcfile) {
+               return htmllink($params{page}, $params{destpage}, $image);
+       }
 
        my $dir = $params{page};
        my $base = IkiWiki::basename($file);
 
        eval q{use Image::Magick};
-       return "[[img ".gettext("Image::Magick not installed")."]]" if $@;
+       error gettext("Image::Magick is not installed") if $@;
        my $im = Image::Magick->new;
        my $imglink;
        my $r;
 
        if ($params{size} ne 'full') {
-               my ($w, $h) = ($params{size} =~ /^(\d+)x(\d+)$/);
-               return "[[img ".sprintf(gettext('bad size "%s"'), $params{size})."]]"
-                       unless (defined $w && defined $h);
+               my ($w, $h) = ($params{size} =~ /^(\d*)x(\d*)$/);
+               error sprintf(gettext('wrong size format "%s" (should be WxH)'), $params{size})
+                       unless (defined $w && defined $h &&
+                               (length $w || length $h));
 
                my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
                $imglink = "$dir/${w}x${h}-$base";
                
                will_render($params{page}, $imglink);
 
-               if (-e $outfile && (-M srcfile($file) >= -M $outfile)) {
+               if (-e $outfile && (-M $srcfile >= -M $outfile)) {
                        $r = $im->Read($outfile);
-                       return "[[img ".sprintf(gettext("failed to read %s: %s"), $outfile, $r)."]]" if $r;
+                       error sprintf(gettext("failed to read %s: %s"), $outfile, $r) if $r;
                }
                else {
-                       $r = $im->Read(srcfile($file));
-                       return "[[img ".sprintf(gettext("failed to read %s: %s"), $file, $r)."]]" if $r;
+                       $r = $im->Read($srcfile);
+                       error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
 
                        $r = $im->Resize(geometry => "${w}x${h}");
-                       return "[[img ".sprintf(gettext("failed to resize: %s"), $r)."]]" if $r;
+                       error sprintf(gettext("failed to resize: %s"), $r) if $r;
 
                        # don't actually write file in preview mode
                        if (! $params{preview}) {
@@ -83,8 +97,8 @@ sub preprocess (@) { #{{{
                }
        }
        else {
-               $r = $im->Read(srcfile($file));
-               return "[[img ".sprintf(gettext("failed to read %s: %s"), $file, $r)."]]" if $r;
+               $r = $im->Read($srcfile);
+               error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
                $imglink = $file;
        }
 
@@ -101,14 +115,15 @@ sub preprocess (@) { #{{{
        }
 
        if (! defined($im->Get("width")) || ! defined($im->Get("height"))) {
-               return "[[img ".sprintf(gettext("failed to determine size of image %s"), $file)."]]";
+               error sprintf(gettext("failed to determine size of image %s"), $file)
        }
 
        my $imgtag='<img src="'.$imgurl.
-               '" alt="'.(exists $params{alt} ? $params{alt} : '').
                '" width="'.$im->Get("width").
                '" height="'.$im->Get("height").'"'.
+               (exists $params{alt} ? ' alt="'.$params{alt}.'"' : '').
                (exists $params{title} ? ' title="'.$params{title}.'"' : '').
+               (exists $params{align} ? ' align="'.$params{align}.'"' : '').
                (exists $params{class} ? ' class="'.$params{class}.'"' : '').
                (exists $params{id} ? ' id="'.$params{id}.'"' : '').
                ' />';
@@ -135,6 +150,6 @@ sub preprocess (@) { #{{{
        else {
                return $imgtag;
        }
-} #}}}
+}
 
 1