thank you; gettext

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

diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm
index ed2e9354da988dfdfe1894d1fe6d7bb93e1ad4c1..b85824345ed6e1634cf6f43b08ac3887a56117d4 100644 (file)
--- a/IkiWiki/Plugin/img.pm
+++ b/IkiWiki/Plugin/img.pm
@@ -23,8 +23,8 @@ sub getsetup () {
                },
                img_allowed_formats => {
                        type => "string",
                },
                img_allowed_formats => {
                        type => "string",

-                       default => [qw(jpeg png gif)],
-                       description => "Image formats to process (jpeg, png, gif, pdf, svg or 'everything' to accept all)",
+                       default => [qw(jpeg png gif svg)],
+                       description => "Image formats to process (jpeg, png, gif, svg, pdf or 'everything' to accept all)",

                        # ImageMagick has had arbitrary code execution flaws,
                        # and the whole delegates mechanism is scary from
                        # that perspective
                        # ImageMagick has had arbitrary code execution flaws,
                        # and the whole delegates mechanism is scary from
                        # that perspective


@@ -36,10 +36,10 @@ sub getsetup () {
 sub allowed {
        my $format = shift;
        my $allowed = $config{img_allowed_formats};
 sub allowed {
        my $format = shift;
        my $allowed = $config{img_allowed_formats};

-       $allowed = ['jpeg', 'png'] unless defined $allowed && @$allowed;
+       $allowed = ['jpeg', 'png', 'gif', 'svg'] unless defined $allowed && @$allowed;

 
        foreach my $a (@$allowed) {
 
        foreach my $a (@$allowed) {

-               return 1 if $a eq $format || $a eq 'everything';
+               return 1 if lc($a) eq $format || lc($a) eq 'everything';

        }
 
        return 0;
        }
 
        return 0;


@@ -89,7 +89,7 @@ sub preprocess (@) {
        my $extension;
        my $format;
 
        my $extension;
        my $format;
 

-       if ($base =~ m/\.([a-z0-9]+)$/) {
+       if ($base =~ m/\.([a-z0-9]+)$/is) {

                $extension = $1;
        }
        else {
                $extension = $1;
        }
        else {


@@ -125,23 +125,20 @@ sub preprocess (@) {
        }
        else {
                # allow ImageMagick to auto-detect (potentially dangerous)
        }
        else {
                # allow ImageMagick to auto-detect (potentially dangerous)

-               $format = '';
+               my $im = Image::Magick->new();
+               my $r = $im->Ping(file => $in);
+               if ($r) {
+                       $format = lc $r;
+               }
+               else {
+                       error sprintf(gettext("failed to determine format of %s"), $file);
+               }

        }
 
        error sprintf(gettext("%s image processing disabled in img_allowed_formats configuration"), $format ? $format : "\"$extension\"") unless allowed($format ? $format : "everything");
 
        # Try harder to protect ImageMagick from itself
        }
 
        error sprintf(gettext("%s image processing disabled in img_allowed_formats configuration"), $format ? $format : "\"$extension\"") unless allowed($format ? $format : "everything");
 
        # Try harder to protect ImageMagick from itself

-       if ($format eq 'svg') {
-               my $content;
-               read($in, $content, 5) or error sprintf(gettext("failed to read %s: %s"), $file, $!);
-               # This is an over-simplification, but ?xml is the check that
-               # ImageMagick uses. We also accept <svg for the simplest
-               # possible SVGs.
-               if ($content !~ m/^(.\?xml|<svg)/is) {
-                       error sprintf(gettext("\"%s\" does not seem to be a valid %s file"), $file, $format);
-               }
-       }
-       elsif ($magic) {
+       if (defined $magic) {

                my $content;
                read($in, $content, length $magic) or error sprintf(gettext("failed to read %s: %s"), $file, $!);
                if ($magic ne $content) {
                my $content;
                read($in, $content, length $magic) or error sprintf(gettext("failed to read %s: %s"), $file, $!);
                if ($magic ne $content) {


@@ -149,94 +146,118 @@ sub preprocess (@) {
                }
        }
 
                }
        }
 

-       my $issvg = $base=~s/\.svg$/.png/i;

        my $ispdf = $base=~s/\.pdf$/.png/i;
        my $pagenumber = exists($params{pagenumber}) ? int($params{pagenumber}) : 0;
        if ($pagenumber != 0) {
                $base = "p$pagenumber-$base";
        }
 
        my $ispdf = $base=~s/\.pdf$/.png/i;
        my $pagenumber = exists($params{pagenumber}) ? int($params{pagenumber}) : 0;
        if ($pagenumber != 0) {
                $base = "p$pagenumber-$base";
        }
 

-       eval q{use Image::Magick};
-       error gettext("Image::Magick is not installed") if $@;
-       my $im = Image::Magick->new();

        my $imglink;
        my $imgdatalink;
        my $imglink;
        my $imgdatalink;

-       my $r = $im->Read("$format:$srcfile\[$pagenumber]");
-       error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
+       my ($dwidth, $dheight);

 
 

-       if (! defined $im->Get("width") || ! defined $im->Get("height")) {
-               error sprintf(gettext("failed to get dimensions of %s"), $file);
+       my ($w, $h);
+       if ($params{size} ne 'full') {
+               ($w, $h) = ($params{size} =~ /^(\d*)x(\d*)$/);

        }
 
        }
 

-       my ($dwidth, $dheight);
+       if ($format eq 'svg') {
+               # svg images are not scaled using ImageMagick because the
+               # pipeline is complex. Instead, the image size is simply
+               # set to the provided values.
+               #
+               # Aspect ratio will be preserved automatically when
+               # only a width or only a height is specified.
+               # When both are specified, aspect ratio will not be
+               # preserved.
+               $imglink = $file;
+               $dwidth = $w if length $w;
+               $dheight = $h if length $h;
+       }
+       else {
+               eval q{use Image::Magick};
+               error gettext("Image::Magick is not installed") if $@;
+               my $im = Image::Magick->new();
+               my $r = $im->Read("$format:$srcfile\[$pagenumber]");
+               error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
+
+               if ($config{deterministic}) {
+                       $im->Set('date:create' => 0);
+                       $im->Set('date:modify' => 0);
+                       $im->Set('option'      => 'png:exclude-chunk=time');
+               }

 
 

-       if ($params{size} eq 'full') {
-               $dwidth = $im->Get("width");
-               $dheight = $im->Get("height");
-       } else {
-               my ($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 $h));
-
-               if ($im->Get("width") == 0 || $im->Get("height") == 0) {
-                       ($dwidth, $dheight)=(0, 0);
-               } elsif (! length $w || (length $h && $im->Get("height")*$w > $h * $im->Get("width"))) {
-                       # using height because only height is given or ...
-                       # because original image is more portrait than $w/$h
-                       # ... slimness of $im > $h/w
-                       # ... $im->Get("height")/$im->Get("width") > $h/$w
-                       # ... $im->Get("height")*$w > $h * $im->Get("width")
-
-                       $dheight=$h;
-                       $dwidth=$h / $im->Get("height") * $im->Get("width");
-               } else { # (! length $h) or $w is what determines the resized size
-                       $dwidth=$w;
-                       $dheight=$w / $im->Get("width") * $im->Get("height");
+               if (! defined $im->Get("width") || ! defined $im->Get("height")) {
+                       error sprintf(gettext("failed to get dimensions of %s"), $file);

                }
                }

-       }

 
 

-       if ($dwidth < $im->Get("width") || $ispdf) {
-               # resize down, or resize to pixels at all
+               if (! length $w && ! length $h) {
+                       $dwidth = $im->Get("width");
+                       $dheight = $im->Get("height");
+               } else {
+                       error sprintf(gettext('wrong size format "%s" (should be WxH)'), $params{size})
+                               unless (defined $w && defined $h &&
+                                       (length $w || length $h));
+
+                       if ($im->Get("width") == 0 || $im->Get("height") == 0) {
+                               ($dwidth, $dheight)=(0, 0);
+                       } elsif (! length $w || (length $h && $im->Get("height")*$w > $h * $im->Get("width"))) {
+                               # using height because only height is given or ...
+                               # because original image is more portrait than $w/$h
+                               # ... slimness of $im > $h/w
+                               # ... $im->Get("height")/$im->Get("width") > $h/$w
+                               # ... $im->Get("height")*$w > $h * $im->Get("width")
+
+                               $dheight=$h;
+                               $dwidth=$h / $im->Get("height") * $im->Get("width");
+                       } else { # (! length $h) or $w is what determines the resized size
+                               $dwidth=$w;
+                               $dheight=$w / $im->Get("width") * $im->Get("height");
+                       }
+               }

 
 

-               my $outfile = "$config{destdir}/$dir/$params{size}-$base";
-               $imglink = "$dir/$params{size}-$base";
+               if ($dwidth < $im->Get("width") || $ispdf) {
+                       # resize down, or resize to pixels at all

 
 

-               will_render($params{page}, $imglink);
+                       my $outfile = "$config{destdir}/$dir/$params{size}-$base";
+                       $imglink = "$dir/$params{size}-$base";

 
 

-               if (-e $outfile && (-M $srcfile >= -M $outfile)) {
-                       $im = Image::Magick->new;
-                       $r = $im->Read($outfile);
-                       error sprintf(gettext("failed to read %s: %s"), $outfile, $r) if $r;
-               }
-               else {
-                       $r = $im->Resize(geometry => "${dwidth}x${dheight}");
-                       error sprintf(gettext("failed to resize: %s"), $r) if $r;
-
-                       $im->set(($issvg || $ispdf) ? (magick => 'png') : ());
-                       my @blob = $im->ImageToBlob();
-                       # don't actually write resized file in preview mode;
-                       # rely on width and height settings
-                       if (! $params{preview}) {
-                               writefile($imglink, $config{destdir}, $blob[0], 1);
+                       will_render($params{page}, $imglink);
+
+                       if (-e $outfile && (-M $srcfile >= -M $outfile)) {
+                               $im = Image::Magick->new;
+                               $r = $im->Read($outfile);
+                               error sprintf(gettext("failed to read %s: %s"), $outfile, $r) if $r;

                        }
                        else {
                        }
                        else {

-                               eval q{use MIME::Base64};
-                               error($@) if $@;
-                               $imgdatalink = "data:image/".$im->Get("magick").";base64,".encode_base64($blob[0]);
+                               $r = $im->Resize(geometry => "${dwidth}x${dheight}");
+                               error sprintf(gettext("failed to resize: %s"), $r) if $r;
+
+                               $im->set($ispdf ? (magick => 'png') : ());
+                               my @blob = $im->ImageToBlob();
+                               # don't actually write resized file in preview mode;
+                               # rely on width and height settings
+                               if (! $params{preview}) {
+                                       writefile($imglink, $config{destdir}, $blob[0], 1);
+                               }
+                               else {
+                                       eval q{use MIME::Base64};
+                                       error($@) if $@;
+                                       $imgdatalink = "data:image/".$im->Get("magick").";base64,".encode_base64($blob[0]);
+                               }

                        }
                        }

+
+                       # always get the true size of the resized image (it could be
+                       # that imagemagick did its calculations differently)
+                       $dwidth  = $im->Get("width");
+                       $dheight = $im->Get("height");
+               } else {
+                       $imglink = $file;

                }
 
                }
 

-               # always get the true size of the resized image (it could be
-               # that imagemagick did its calculations differently)
-               $dwidth  = $im->Get("width");
-               $dheight = $im->Get("height");
-       } else {
-               $imglink = $file;
-       }
-       
-       if (! defined($dwidth) || ! defined($dheight)) {
-               error sprintf(gettext("failed to determine size of image %s"), $file)
+               if (! defined($dwidth) || ! defined($dheight)) {
+                       error sprintf(gettext("failed to determine size of image %s"), $file)
+               }

        }
 
        my ($fileurl, $imgurl);
        }
 
        my ($fileurl, $imgurl);


@@ -255,10 +276,10 @@ sub preprocess (@) {
                }
        }
        
                }
        }
        

-       my $imgtag='<img src="'.$imgurl.
-               '" width="'.$dwidth.
-               '" height="'.$dheight.'"'.
-               $attrs.
+       my $imgtag='<img src="'.$imgurl.'"';
+       $imgtag.=' width="'.$dwidth.'"' if defined $dwidth;
+       $imgtag.=' height="'.$dheight.'"' if defined $dheight;
+       $imgtag.= $attrs.

                (exists $params{align} && ! exists $params{caption} ? ' align="'.$params{align}.'"' : '').
                ' />';
 
                (exists $params{align} && ! exists $params{caption} ? ' align="'.$params{align}.'"' : '').
                ' />';