| 1 | ###########################################################################
|
|---|
| 2 | #
|
|---|
| 3 | # ImageConverter - helper plugin that does image conversion using ImageMagick
|
|---|
| 4 | #
|
|---|
| 5 | # A component of the Greenstone digital library software
|
|---|
| 6 | # from the New Zealand Digital Library Project at the
|
|---|
| 7 | # University of Waikato, New Zealand.
|
|---|
| 8 | #
|
|---|
| 9 | # Copyright (C) 2008 New Zealand Digital Library Project
|
|---|
| 10 | #
|
|---|
| 11 | # This program is free software; you can redistribute it and/or modify
|
|---|
| 12 | # it under the terms of the GNU General Public License as published by
|
|---|
| 13 | # the Free Software Foundation; either version 2 of the License, or
|
|---|
| 14 | # (at your option) any later version.
|
|---|
| 15 | #
|
|---|
| 16 | # This program is distributed in the hope that it will be useful,
|
|---|
| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 19 | # GNU General Public License for more details.
|
|---|
| 20 | #
|
|---|
| 21 | # You should have received a copy of the GNU General Public License
|
|---|
| 22 | # along with this program; if not, write to the Free Software
|
|---|
| 23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|---|
| 24 | #
|
|---|
| 25 | ###########################################################################
|
|---|
| 26 | package ImageConverter;
|
|---|
| 27 |
|
|---|
| 28 | use BaseMediaConverter;
|
|---|
| 29 |
|
|---|
| 30 |
|
|---|
| 31 | use strict;
|
|---|
| 32 | no strict 'refs'; # allow filehandles to be variables and viceversa
|
|---|
| 33 |
|
|---|
| 34 | use gsprintf 'gsprintf';
|
|---|
| 35 |
|
|---|
| 36 | BEGIN {
|
|---|
| 37 | @ImageConverter::ISA = ('BaseMediaConverter');
|
|---|
| 38 | }
|
|---|
| 39 |
|
|---|
| 40 | my $arguments = [
|
|---|
| 41 | { 'name' => "create_thumbnail",
|
|---|
| 42 | 'desc' => "{ImageConverter.create_thumbnail}",
|
|---|
| 43 | 'type' => "enum",
|
|---|
| 44 | 'list' => [{'name' => "true", 'desc' => "{common.true}"},
|
|---|
| 45 | {'name' => "false", 'desc' => "{common.false}"}],
|
|---|
| 46 | 'deft' => "true",
|
|---|
| 47 | 'reqd' => "no" },
|
|---|
| 48 | { 'name' => "thumbnailsize",
|
|---|
| 49 | 'desc' => "{ImageConverter.thumbnailsize}",
|
|---|
| 50 | 'type' => "int",
|
|---|
| 51 | 'deft' => "100",
|
|---|
| 52 | 'range' => "1,",
|
|---|
| 53 | 'reqd' => "no" },
|
|---|
| 54 | { 'name' => "thumbnailtype",
|
|---|
| 55 | 'desc' => "{ImageConverter.thumbnailtype}",
|
|---|
| 56 | 'type' => "string",
|
|---|
| 57 | 'deft' => "gif",
|
|---|
| 58 | 'reqd' => "no" },
|
|---|
| 59 | { 'name' => "noscaleup",
|
|---|
| 60 | 'desc' => "{ImageConverter.noscaleup}",
|
|---|
| 61 | 'type' => "flag",
|
|---|
| 62 | 'reqd' => "no" },
|
|---|
| 63 | { 'name' => "create_screenview",
|
|---|
| 64 | 'desc' => "{ImageConverter.create_screenview}",
|
|---|
| 65 | 'type' => "enum",
|
|---|
| 66 | 'list' => [{'name' => "true", 'desc' => "{common.true}"},
|
|---|
| 67 | {'name' => "false", 'desc' => "{common.false}"}],
|
|---|
| 68 | 'deft' => "true",
|
|---|
| 69 | 'reqd' => "no" },
|
|---|
| 70 | { 'name' => "screenviewsize",
|
|---|
| 71 | 'desc' => "{ImageConverter.screenviewsize}",
|
|---|
| 72 | 'type' => "int",
|
|---|
| 73 | 'deft' => "500",
|
|---|
| 74 | 'range' => "1,",
|
|---|
| 75 | 'reqd' => "no" },
|
|---|
| 76 | { 'name' => "screenviewtype",
|
|---|
| 77 | 'desc' => "{ImageConverter.screenviewtype}",
|
|---|
| 78 | 'type' => "string",
|
|---|
| 79 | 'deft' => "jpg",
|
|---|
| 80 | 'reqd' => "no" },
|
|---|
| 81 | { 'name' => "converttotype",
|
|---|
| 82 | 'desc' => "{ImageConverter.converttotype}",
|
|---|
| 83 | 'type' => "string",
|
|---|
| 84 | 'deft' => "",
|
|---|
| 85 | 'reqd' => "no" },
|
|---|
| 86 | { 'name' => "minimumsize",
|
|---|
| 87 | 'desc' => "{ImageConverter.minimumsize}",
|
|---|
| 88 | 'type' => "int",
|
|---|
| 89 | 'deft' => "100",
|
|---|
| 90 | 'range' => "1,",
|
|---|
| 91 | 'reqd' => "no" },
|
|---|
| 92 | { 'name' => "cache_generated_images",
|
|---|
| 93 | 'desc' => "{ImageConverter.cache_generated_images}",
|
|---|
| 94 | 'type' => "flag",
|
|---|
| 95 | 'reqd' => "no",
|
|---|
| 96 | }
|
|---|
| 97 | ];
|
|---|
| 98 |
|
|---|
| 99 | my $options = { 'name' => "ImageConverter",
|
|---|
| 100 | 'desc' => "{ImageConverter.desc}",
|
|---|
| 101 | 'abstract' => "yes",
|
|---|
| 102 | 'inherits' => "yes",
|
|---|
| 103 | 'args' => $arguments };
|
|---|
| 104 |
|
|---|
| 105 | sub new {
|
|---|
| 106 | my ($class) = shift (@_);
|
|---|
| 107 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
|
|---|
| 108 | push(@$pluginlist, $class);
|
|---|
| 109 |
|
|---|
| 110 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
|
|---|
| 111 | push(@{$hashArgOptLists->{"OptList"}},$options);
|
|---|
| 112 |
|
|---|
| 113 | my $self = new BaseMediaConverter($pluginlist, $inputargs, $hashArgOptLists, 1);
|
|---|
| 114 |
|
|---|
| 115 |
|
|---|
| 116 | return bless $self, $class;
|
|---|
| 117 |
|
|---|
| 118 | }
|
|---|
| 119 |
|
|---|
| 120 | # needs to be called after BasePlugin init, so that outhandle is set up.
|
|---|
| 121 | sub init {
|
|---|
| 122 | my $self = shift(@_);
|
|---|
| 123 |
|
|---|
| 124 | $self->{'tmp_file_paths'} = ();
|
|---|
| 125 |
|
|---|
| 126 | # Check that ImageMagick is installed and available on the path
|
|---|
| 127 | my $image_conversion_available = 1;
|
|---|
| 128 | my $no_image_conversion_reason = "";
|
|---|
| 129 | # None of this works very well on Windows 95/98...
|
|---|
| 130 | if ($ENV{'GSDLOS'} eq "windows" && !Win32::IsWinNT()) {
|
|---|
| 131 | $image_conversion_available = 0;
|
|---|
| 132 | $no_image_conversion_reason = "win95notsupported";
|
|---|
| 133 | } else {
|
|---|
| 134 | my $result = `identify 2>&1`;
|
|---|
| 135 | if ($? == -1 || $? == 256) { # Linux and Windows return different values for "program not found"
|
|---|
| 136 | $image_conversion_available = 0;
|
|---|
| 137 | $no_image_conversion_reason = "imagemagicknotinstalled";
|
|---|
| 138 | }
|
|---|
| 139 | }
|
|---|
| 140 | $self->{'image_conversion_available'} = $image_conversion_available;
|
|---|
| 141 | $self->{'no_image_conversion_reason'} = $no_image_conversion_reason;
|
|---|
| 142 |
|
|---|
| 143 | if ($self->{'image_conversion_available'} == 0) {
|
|---|
| 144 | my $outhandle = $self->{'outhandle'};
|
|---|
| 145 | &gsprintf($outhandle, "ImageConverter: {ImageConverter.noconversionavailable} ({ImageConverter.".$self->{'no_image_conversion_reason'}."})\n");
|
|---|
| 146 | }
|
|---|
| 147 |
|
|---|
| 148 | }
|
|---|
| 149 |
|
|---|
| 150 |
|
|---|
| 151 | # convert image to new type if converttotype is set
|
|---|
| 152 | # generate thumbnails if required
|
|---|
| 153 | # generate screenview if required
|
|---|
| 154 | # discover image metadata
|
|---|
| 155 | # filename_no_path must be in utf8 and url-encoded
|
|---|
| 156 | sub generate_images {
|
|---|
| 157 | my $self = shift(@_);
|
|---|
| 158 |
|
|---|
| 159 | my ($filename_full_path, $filename_no_path, $doc_obj, $section) = @_;
|
|---|
| 160 |
|
|---|
| 161 | # check image magick status
|
|---|
| 162 | return 0 if $self->{'image_conversion_available'} == 0;
|
|---|
| 163 | # check the filenames
|
|---|
| 164 | return 0 if ($filename_no_path eq "" || !-f $filename_full_path);
|
|---|
| 165 |
|
|---|
| 166 | if ($self->{'cache_generated_images'}) {
|
|---|
| 167 | $self->init_cache_for_file($filename_full_path);
|
|---|
| 168 | }
|
|---|
| 169 |
|
|---|
| 170 | my $verbosity = $self->{'verbosity'};
|
|---|
| 171 | my $outhandle = $self->{'outhandle'};
|
|---|
| 172 |
|
|---|
| 173 | # check the size of the image against minimum size if specified
|
|---|
| 174 | my $minimumsize = $self->{'minimumsize'};
|
|---|
| 175 | if (defined $minimumsize && (-s $filename_full_path < $minimumsize)) {
|
|---|
| 176 | print $outhandle "ImageConverter: \"$filename_full_path\" too small, skipping\n"
|
|---|
| 177 | if ($verbosity > 1);
|
|---|
| 178 | return 0; # or is there a better return value??
|
|---|
| 179 | }
|
|---|
| 180 |
|
|---|
| 181 | my $filehead = $filename_no_path;
|
|---|
| 182 | $filehead =~ s/\.([^\.]*)$//; # filename with no extension
|
|---|
| 183 | my $assocfilemeta = "[assocfilepath]";
|
|---|
| 184 | if ($section ne $doc_obj->get_top_section()) {
|
|---|
| 185 | $assocfilemeta = "[parent(Top):assocfilepath]";
|
|---|
| 186 | }
|
|---|
| 187 |
|
|---|
| 188 | # The images that will get generated may contain percent signs in their src filenames
|
|---|
| 189 | # Encode those percent signs themselves so that urls to the imgs refer to them correctly
|
|---|
| 190 | my $url_to_filehead = &unicode::filename_to_url($filehead);
|
|---|
| 191 | my $url_to_filename_no_path = &unicode::filename_to_url($filename_no_path);
|
|---|
| 192 |
|
|---|
| 193 | # Convert the image to a new type (if required).
|
|---|
| 194 | my $converttotype = $self->{'converttotype'};
|
|---|
| 195 | my $type = "unknown";
|
|---|
| 196 |
|
|---|
| 197 | if ($converttotype ne "" && $filename_full_path !~ m/$converttotype$/) {
|
|---|
| 198 | # $doc_obj->add_utf8_metadata($section, "Image", $utf8_filename_meta);
|
|---|
| 199 |
|
|---|
| 200 | my ($result,$filename_full_path)
|
|---|
| 201 | = $self->convert($filename_full_path, $converttotype, "", "CONVERTTYPE");
|
|---|
| 202 |
|
|---|
| 203 | $type = $converttotype;
|
|---|
| 204 | $filename_no_path = "$filehead.$type";
|
|---|
| 205 | $url_to_filename_no_path = "$url_to_filehead.$type";
|
|---|
| 206 | }
|
|---|
| 207 |
|
|---|
| 208 | # add Image metadata
|
|---|
| 209 | $doc_obj->add_utf8_metadata($section, "Image", $url_to_filename_no_path); # url to generated image
|
|---|
| 210 |
|
|---|
| 211 | # here we overwrite the original with the potentially converted one
|
|---|
| 212 | $doc_obj->set_utf8_metadata_element($section, "Source", &unicode::url_decode($filename_no_path)); # displayname of generated image
|
|---|
| 213 | $doc_obj->set_utf8_metadata_element($section, "SourceFile", $url_to_filename_no_path); # displayname of generated image
|
|---|
| 214 |
|
|---|
| 215 | # use identify to get info about the (possibly converted) image
|
|---|
| 216 | my ($image_type, $image_width, $image_height, $image_size)
|
|---|
| 217 | = &identify($filename_full_path, $outhandle, $verbosity);
|
|---|
| 218 |
|
|---|
| 219 | if ($image_type ne " ") {
|
|---|
| 220 | $type = $self->correct_mime_type($image_type);
|
|---|
| 221 | }
|
|---|
| 222 |
|
|---|
| 223 | #overwrite the ones added in BasePlugin
|
|---|
| 224 | $doc_obj->set_metadata_element ($section, "FileFormat", $type);
|
|---|
| 225 | $doc_obj->set_metadata_element ($section, "FileSize", $image_size);
|
|---|
| 226 |
|
|---|
| 227 | $doc_obj->add_metadata ($section, "ImageType", $image_type);
|
|---|
| 228 | $doc_obj->add_metadata ($section, "ImageWidth", $image_width);
|
|---|
| 229 | $doc_obj->add_metadata ($section, "ImageHeight", $image_height);
|
|---|
| 230 | $doc_obj->add_metadata ($section, "ImageSize", $image_size);
|
|---|
| 231 |
|
|---|
| 232 | $doc_obj->add_metadata ($section, "srclink", "<a href=\"_httpprefix_/collect/[collection]/index/assoc/$assocfilemeta/[Image]\">");
|
|---|
| 233 | $doc_obj->add_metadata ($section, "/srclink", "</a>");
|
|---|
| 234 | $doc_obj->add_metadata ($section, "srcicon", "<img src=\"_httpprefix_/collect/[collection]/index/assoc/$assocfilemeta/[Image]\" width=\"100\">");
|
|---|
| 235 |
|
|---|
| 236 | # Add the image as an associated file
|
|---|
| 237 | $doc_obj->associate_file($filename_full_path, $filename_no_path, "image/$type", $section);
|
|---|
| 238 |
|
|---|
| 239 | if ($self->{'create_thumbnail'} eq "true") {
|
|---|
| 240 | $self->create_thumbnail($filename_full_path, $filehead, $doc_obj, $section, $assocfilemeta, $url_to_filehead);
|
|---|
| 241 | }
|
|---|
| 242 | if ($self->{'create_screenview'} eq "true") {
|
|---|
| 243 | $self->create_screenview($filename_full_path, $filehead, $doc_obj, $section, $assocfilemeta, $url_to_filehead);
|
|---|
| 244 | }
|
|---|
| 245 | }
|
|---|
| 246 |
|
|---|
| 247 | sub create_thumbnail {
|
|---|
| 248 | my $self = shift(@_);
|
|---|
| 249 | my ($original_file, $filehead, $doc_obj, $section, $assocfilemeta, $url_to_filehead) = @_;
|
|---|
| 250 | $url_to_filehead = $filehead unless defined $url_to_filehead;
|
|---|
| 251 |
|
|---|
| 252 | my $thumbnailsize = $self->{'thumbnailsize'};
|
|---|
| 253 | my $thumbnailtype = $self->correct_mime_type($self->{'thumbnailtype'});
|
|---|
| 254 |
|
|---|
| 255 | # Generate the thumbnail with convert
|
|---|
| 256 | my ($result,$thumbnailfile)
|
|---|
| 257 | = $self->convert($original_file, $thumbnailtype, "-geometry $thumbnailsize" . "x$thumbnailsize", "THUMB");
|
|---|
| 258 |
|
|---|
| 259 | # Add the thumbnail as an associated file ...
|
|---|
| 260 | if (-e "$thumbnailfile") {
|
|---|
| 261 | $doc_obj->associate_file("$thumbnailfile", $filehead."_thumb.$thumbnailtype",
|
|---|
| 262 | "image/$thumbnailtype",$section); # name of generated image
|
|---|
| 263 | $doc_obj->add_metadata ($section, "ThumbType", $thumbnailtype);
|
|---|
| 264 | $doc_obj->add_utf8_metadata ($section, "Thumb", $url_to_filehead."_thumb.$thumbnailtype"); # url to generated image
|
|---|
| 265 |
|
|---|
| 266 | $doc_obj->add_metadata ($section, "thumbicon", "<img src=\"_httpprefix_/collect/[collection]/index/assoc/$assocfilemeta/[Thumb]\" width=[ThumbWidth] height=[ThumbHeight]>");
|
|---|
| 267 |
|
|---|
| 268 |
|
|---|
| 269 | # Extract Thumbnail metadata from convert output
|
|---|
| 270 | if ($result =~ m/[0-9]+x[0-9]+=>([0-9]+)x([0-9]+)/) {
|
|---|
| 271 | $doc_obj->add_metadata ($section, "ThumbWidth", $1);
|
|---|
| 272 | $doc_obj->add_metadata ($section, "ThumbHeight", $2);
|
|---|
| 273 | }
|
|---|
| 274 | } else {
|
|---|
| 275 | my $outhandle = $self->{'outhandle'};
|
|---|
| 276 | print $outhandle "Couldn't find thumbnail $thumbnailfile\n";
|
|---|
| 277 |
|
|---|
| 278 | }
|
|---|
| 279 | }
|
|---|
| 280 |
|
|---|
| 281 | sub create_screenview {
|
|---|
| 282 |
|
|---|
| 283 | my $self = shift(@_);
|
|---|
| 284 | my ($original_file, $filehead, $doc_obj, $section, $assocfilemeta, $url_to_filehead) = @_;
|
|---|
| 285 | $url_to_filehead = $filehead unless defined $url_to_filehead;
|
|---|
| 286 |
|
|---|
| 287 | # To do: if the actual image smaller than the screenview size,
|
|---|
| 288 | # we should use the original !
|
|---|
| 289 |
|
|---|
| 290 | my $screenviewsize = $self->{'screenviewsize'};
|
|---|
| 291 | my $screenviewtype = $self->correct_mime_type($self->{'screenviewtype'});
|
|---|
| 292 |
|
|---|
| 293 | # make the screenview image
|
|---|
| 294 | my ($result,$screenviewfilename)
|
|---|
| 295 | = $self->convert($original_file, $screenviewtype, "-geometry $screenviewsize" . "x$screenviewsize", "SCREEN");
|
|---|
| 296 |
|
|---|
| 297 | #add the screenview as an associated file ...
|
|---|
| 298 | if (-e "$screenviewfilename") {
|
|---|
| 299 | $doc_obj->associate_file("$screenviewfilename", $filehead."_screen.$screenviewtype", "image/$screenviewtype",$section); # name of generated image
|
|---|
| 300 | $doc_obj->add_metadata ($section, "ScreenType", $screenviewtype);
|
|---|
| 301 | $doc_obj->add_utf8_metadata ($section, "Screen", $url_to_filehead."_screen.$screenviewtype"); # url to generated image
|
|---|
| 302 |
|
|---|
| 303 | $doc_obj->add_metadata ($section, "screenicon", "<img src=\"_httpprefix_/collect/[collection]/index/assoc/$assocfilemeta/[Screen]\" width=[ScreenWidth] height=[ScreenHeight]>");
|
|---|
| 304 |
|
|---|
| 305 | # get screenview dimensions, size and type
|
|---|
| 306 | if ($result =~ m/[0-9]+x[0-9]+=>([0-9]+)x([0-9]+)/) {
|
|---|
| 307 | $doc_obj->add_metadata ($section, "ScreenWidth", $1);
|
|---|
| 308 | $doc_obj->add_metadata ($section, "ScreenHeight", $2);
|
|---|
| 309 | } elsif ($result =~ m/([0-9]+)x([0-9]+)/) {
|
|---|
| 310 | #if the image hasn't changed size, the previous regex doesn't match
|
|---|
| 311 | $doc_obj->add_metadata ($section, "ScreenWidth", $1);
|
|---|
| 312 | $doc_obj->add_metadata ($section, "ScreenHeight", $2);
|
|---|
| 313 | }
|
|---|
| 314 | } else {
|
|---|
| 315 | my $outhandle = $self->{'outhandle'};
|
|---|
| 316 | print $outhandle "Couldn't find screenview file $screenviewfilename\n";
|
|---|
| 317 |
|
|---|
| 318 | }
|
|---|
| 319 |
|
|---|
| 320 | }
|
|---|
| 321 |
|
|---|
| 322 |
|
|---|
| 323 |
|
|---|
| 324 | sub convert {
|
|---|
| 325 | my $self = shift(@_);
|
|---|
| 326 | my $source_file_path = shift(@_);
|
|---|
| 327 | my $target_file_type = shift(@_);
|
|---|
| 328 | my $convert_options = shift(@_) || "";
|
|---|
| 329 | my $convert_id = shift(@_) || "";
|
|---|
| 330 |
|
|---|
| 331 | my $outhandle = $self->{'outhandle'};
|
|---|
| 332 | my $verbosity = $self->{'verbosity'};
|
|---|
| 333 |
|
|---|
| 334 | my $source_file_no_path = &File::Basename::basename($source_file_path);
|
|---|
| 335 |
|
|---|
| 336 | # Determine the full name and path of the output file
|
|---|
| 337 | my $target_file_path;
|
|---|
| 338 | if ($self->{'cache_generated_images'}) {
|
|---|
| 339 | my $cached_image_dir = $self->{'cached_dir'};
|
|---|
| 340 | my $image_root = $self->{'cached_file_root'};
|
|---|
| 341 | $image_root .= "_$convert_id" if ($convert_id ne "");
|
|---|
| 342 | my $image_file = "$image_root.$target_file_type";
|
|---|
| 343 | $target_file_path = &util::filename_cat($cached_image_dir,$image_file);
|
|---|
| 344 | }
|
|---|
| 345 | else {
|
|---|
| 346 | $target_file_path = &util::get_tmp_filename($target_file_type);
|
|---|
| 347 | push(@{$self->{'tmp_file_paths'}}, $target_file_path);
|
|---|
| 348 |
|
|---|
| 349 | # Output filename used to be parsed from result line:
|
|---|
| 350 | # my ($ofilename) = ($result =~ m/=>(.*\.$target_file_type)/);
|
|---|
| 351 | # by the function that called 'convert'
|
|---|
| 352 | # but this is no longer needed, as output filename is now
|
|---|
| 353 | # explicitly passed back
|
|---|
| 354 |
|
|---|
| 355 | }
|
|---|
| 356 |
|
|---|
| 357 | # Generate and run the convert command
|
|---|
| 358 | my $convert_command = "convert -interlace plane -verbose $convert_options \"$source_file_path\" \"$target_file_path\"";
|
|---|
| 359 |
|
|---|
| 360 | my $print_info = { 'message_prefix' => $convert_id,
|
|---|
| 361 | 'message' => "Converting image $source_file_no_path to: $convert_id $target_file_type" };
|
|---|
| 362 |
|
|---|
| 363 | my ($regenerated,$result,$had_error)
|
|---|
| 364 | = $self->autorun_general_cmd($convert_command,$target_file_path,$print_info);
|
|---|
| 365 |
|
|---|
| 366 | return ($result,$target_file_path);
|
|---|
| 367 | }
|
|---|
| 368 |
|
|---|
| 369 |
|
|---|
| 370 | # Discover the characteristics of an image file with the ImageMagick
|
|---|
| 371 | # "identify" command.
|
|---|
| 372 |
|
|---|
| 373 | sub identify {
|
|---|
| 374 | my ($image, $outhandle, $verbosity) = @_;
|
|---|
| 375 |
|
|---|
| 376 | # Use the ImageMagick "identify" command to get the file specs
|
|---|
| 377 | my $command = "identify \"$image\" 2>&1";
|
|---|
| 378 | print $outhandle "$command\n" if ($verbosity > 2);
|
|---|
| 379 | my $result = '';
|
|---|
| 380 | $result = `$command`;
|
|---|
| 381 | print $outhandle "$result\n" if ($verbosity > 3);
|
|---|
| 382 |
|
|---|
| 383 | # Read the type, width, and height
|
|---|
| 384 | my $type = 'unknown';
|
|---|
| 385 | my $width = 'unknown';
|
|---|
| 386 | my $height = 'unknown';
|
|---|
| 387 |
|
|---|
| 388 | my $image_safe = quotemeta $image;
|
|---|
| 389 | if ($result =~ /^$image_safe (\w+) (\d+)x(\d+)/) {
|
|---|
| 390 | $type = $1;
|
|---|
| 391 | $width = $2;
|
|---|
| 392 | $height = $3;
|
|---|
| 393 | }
|
|---|
| 394 |
|
|---|
| 395 | # Read the size
|
|---|
| 396 | my $size = "unknown";
|
|---|
| 397 | if ($result =~ m/^.* ([0-9]+)b/) {
|
|---|
| 398 | $size = $1;
|
|---|
| 399 | }
|
|---|
| 400 | elsif ($result =~ m/^.* ([0-9]+)(\.([0-9]+))?kb?/) {
|
|---|
| 401 | $size = 1024 * $1;
|
|---|
| 402 | if (defined($2)) {
|
|---|
| 403 | $size = $size + (1024 * $2);
|
|---|
| 404 | # Truncate size (it isn't going to be very accurate anyway)
|
|---|
| 405 | $size = int($size);
|
|---|
| 406 | }
|
|---|
| 407 | }
|
|---|
| 408 | elsif ($result =~ m/^.* (([0-9]+)(\.([0-9]+))?e\+([0-9]+))(kb|b)?/) {
|
|---|
| 409 | # Deals with file sizes on Linux of type "3.4e+02kb" where e+02 is 1*10^2.
|
|---|
| 410 | # 3.4e+02 therefore evaluates to 3.4 x 1 x 10^2 = 340kb.
|
|---|
| 411 | # Programming languages including Perl know how that 3.4e+02 is a number,
|
|---|
| 412 | # so we don't need to do any calculations.
|
|---|
| 413 | $size = $1*1; # turn the string into a number by multiplying it by 1
|
|---|
| 414 | #if we did $size = $1; $size would be merely the string "3.4e+02"
|
|---|
| 415 | $size = int($size); # truncate size
|
|---|
| 416 | }
|
|---|
| 417 | print $outhandle "file: $image:\t $type, $width, $height, $size\n"
|
|---|
| 418 | if ($verbosity > 2);
|
|---|
| 419 |
|
|---|
| 420 | # Return the specs
|
|---|
| 421 | return ($type, $width, $height, $size);
|
|---|
| 422 | }
|
|---|
| 423 |
|
|---|
| 424 | sub clean_up_temporary_files {
|
|---|
| 425 | my $self = shift(@_);
|
|---|
| 426 |
|
|---|
| 427 | foreach my $tmp_file_path (@{$self->{'tmp_file_paths'}}) {
|
|---|
| 428 | if (-e $tmp_file_path) {
|
|---|
| 429 | &util::rm($tmp_file_path);
|
|---|
| 430 | }
|
|---|
| 431 | }
|
|---|
| 432 |
|
|---|
| 433 | }
|
|---|
| 434 |
|
|---|
| 435 | # image/jpg is not a valid mime-type, it ought to be image/jpeg.
|
|---|
| 436 | # Sometimes JPEG is passed in also, want to keep things lowercase just in case.
|
|---|
| 437 | sub correct_mime_type {
|
|---|
| 438 | my $self = shift(@_);
|
|---|
| 439 | my ($file_extension) = @_;
|
|---|
| 440 |
|
|---|
| 441 | $file_extension = lc($file_extension);
|
|---|
| 442 | $file_extension =~ s/jpg/jpeg/s;
|
|---|
| 443 |
|
|---|
| 444 | return $file_extension;
|
|---|
| 445 | }
|
|---|
| 446 |
|
|---|
| 447 | 1;
|
|---|
