* @ingroup Media
*/
class DjVuImage {
+ /**
+ * @const DJVUTXT_MEMORY_LIMIT Memory limit for the DjVu description software
+ */
+ const DJVUTXT_MEMORY_LIMIT = 300000;
+
/**
* Constructor
*
$this->mFilename = $filename;
}
- /**
- * @const DJVUTXT_MEMORY_LIMIT Memory limit for the DjVu description software
- */
- const DJVUTXT_MEMORY_LIMIT = 300000;
-
/**
* Check if the given file is indeed a valid DjVu image file
* @return bool
*/
public function isValid() {
$info = $this->getInfo();
+
return $info !== false;
}
public function getImageSize() {
$data = $this->getInfo();
- if( $data !== false ) {
+ if ( $data !== false ) {
$width = $data['width'];
$height = $data['height'];
return array( $width, $height, 'DjVu',
"width=\"$width\" height=\"$height\"" );
}
+
return false;
}
function dump() {
$file = fopen( $this->mFilename, 'rb' );
$header = fread( $file, 12 );
- // @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
+ // @todo FIXME: Would be good to replace this extract() call with
+ // something that explicitly initializes local variables.
extract( unpack( 'a4magic/a4chunk/NchunkLength', $header ) );
+ /** @var string $chunk
+ * @var string $chunkLength */
echo "$chunk $chunkLength\n";
$this->dumpForm( $file, $chunkLength, 1 );
fclose( $file );
$start = ftell( $file );
$secondary = fread( $file, 4 );
echo str_repeat( ' ', $indent * 4 ) . "($secondary)\n";
- while( ftell( $file ) - $start < $length ) {
+ while ( ftell( $file ) - $start < $length ) {
$chunkHeader = fread( $file, 8 );
- if( $chunkHeader == '' ) {
+ if ( $chunkHeader == '' ) {
break;
}
- // @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
+ // @todo FIXME: Would be good to replace this extract() call with
+ // something that explicitly initializes local variables.
extract( unpack( 'a4chunk/NchunkLength', $chunkHeader ) );
+ /** @var string $chunk
+ * @var string $chunkLength */
echo str_repeat( ' ', $indent * 4 ) . "$chunk $chunkLength\n";
- if( $chunk == 'FORM' ) {
+ if ( $chunk == 'FORM' ) {
$this->dumpForm( $file, $chunkLength, $indent + 1 );
} else {
fseek( $file, $chunkLength, SEEK_CUR );
- if( $chunkLength & 1 == 1 ) {
+ if ( $chunkLength & 1 == 1 ) {
// Padding byte between chunks
fseek( $file, 1, SEEK_CUR );
}
wfSuppressWarnings();
$file = fopen( $this->mFilename, 'rb' );
wfRestoreWarnings();
- if( $file === false ) {
+ if ( $file === false ) {
wfDebug( __METHOD__ . ": missing or failed file read\n" );
+
return false;
}
$header = fread( $file, 16 );
$info = false;
- if( strlen( $header ) < 16 ) {
+ if ( strlen( $header ) < 16 ) {
wfDebug( __METHOD__ . ": too short file header\n" );
} else {
- // @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
+ // @todo FIXME: Would be good to replace this extract() call with
+ // something that explicitly initializes local variables.
extract( unpack( 'a4magic/a4form/NformLength/a4subtype', $header ) );
- if( $magic != 'AT&T' ) {
+ /** @var string $magic
+ * @var string $subtype
+ * @var string $formLength
+ * @var string $formType */
+ if ( $magic != 'AT&T' ) {
wfDebug( __METHOD__ . ": not a DjVu file\n" );
- } elseif( $subtype == 'DJVU' ) {
+ } elseif ( $subtype == 'DJVU' ) {
// Single-page document
$info = $this->getPageInfo( $file, $formLength );
- } elseif( $subtype == 'DJVM' ) {
+ } elseif ( $subtype == 'DJVM' ) {
// Multi-page document
$info = $this->getMultiPageInfo( $file, $formLength );
- } else {
+ } else {
wfDebug( __METHOD__ . ": unrecognized DJVU file type '$formType'\n" );
}
}
fclose( $file );
+
return $info;
}
private function readChunk( $file ) {
$header = fread( $file, 8 );
- if( strlen( $header ) < 8 ) {
+ if ( strlen( $header ) < 8 ) {
return array( false, 0 );
} else {
- // @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
+ // @todo FIXME: Would be good to replace this extract() call with
+ // something that explicitly initializes local variables.
extract( unpack( 'a4chunk/Nlength', $header ) );
+
+ /** @var string $chunk
+ * @var string $length */
return array( $chunk, $length );
}
}
private function skipChunk( $file, $chunkLength ) {
fseek( $file, $chunkLength, SEEK_CUR );
- if( $chunkLength & 0x01 == 1 && !feof( $file ) ) {
+ if ( $chunkLength & 0x01 == 1 && !feof( $file ) ) {
// padding byte
fseek( $file, 1, SEEK_CUR );
}
$start = ftell( $file );
do {
list( $chunk, $length ) = $this->readChunk( $file );
- if( !$chunk ) {
+ if ( !$chunk ) {
break;
}
- if( $chunk == 'FORM' ) {
+ if ( $chunk == 'FORM' ) {
$subtype = fread( $file, 4 );
- if( $subtype == 'DJVU' ) {
+ if ( $subtype == 'DJVU' ) {
wfDebug( __METHOD__ . ": found first subpage\n" );
+
return $this->getPageInfo( $file, $length );
}
$this->skipChunk( $file, $length - 4 );
wfDebug( __METHOD__ . ": skipping '$chunk' chunk\n" );
$this->skipChunk( $file, $length );
}
- } while( $length != 0 && !feof( $file ) && ftell( $file ) - $start < $formLength );
+ } while ( $length != 0 && !feof( $file ) && ftell( $file ) - $start < $formLength );
wfDebug( __METHOD__ . ": multi-page DJVU file contained no pages\n" );
+
return false;
}
private function getPageInfo( $file, $formLength ) {
list( $chunk, $length ) = $this->readChunk( $file );
- if( $chunk != 'INFO' ) {
+ if ( $chunk != 'INFO' ) {
wfDebug( __METHOD__ . ": expected INFO chunk, got '$chunk'\n" );
+
return false;
}
- if( $length < 9 ) {
+ if ( $length < 9 ) {
wfDebug( __METHOD__ . ": INFO should be 9 or 10 bytes, found $length\n" );
+
return false;
}
$data = fread( $file, $length );
- if( strlen( $data ) < $length ) {
+ if ( strlen( $data ) < $length ) {
wfDebug( __METHOD__ . ": INFO chunk cut off\n" );
+
return false;
}
- // @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
+ // @todo FIXME: Would be good to replace this extract() call with
+ // something that explicitly initializes local variables.
extract( unpack(
'nwidth/' .
'nheight/' .
'Cmajor/' .
'vresolution/' .
'Cgamma', $data ) );
+
# Newer files have rotation info in byte 10, but we don't use it yet.
+ /** @var string $width
+ * @var string $height
+ * @var string $major
+ * @var string $minor
+ * @var string $resolution
+ * @var string $length
+ * @var string $gamma */
return array(
'width' => $width,
'height' => $height,
$retval = '';
$txt = wfShellExec( $cmd, $retval, array(), array( 'memory' => self::DJVUTXT_MEMORY_LIMIT ) );
wfProfileOut( 'djvutxt' );
- if( $retval == 0 ) {
+ if ( $retval == 0 ) {
# Strip some control characters
$txt = preg_replace( "/[\013\035\037]/", "", $txt );
$reg = <<<EOR
$txt = preg_replace_callback( $reg, array( $this, 'pageTextCallback' ), $txt );
$txt = "<DjVuTxt>\n<HEAD></HEAD>\n<BODY>\n" . $txt . "</BODY>\n</DjVuTxt>\n";
$xml = preg_replace( "/<DjVuXML>/", "<mw-djvu><DjVuXML>", $xml, 1 );
- $xml = $xml . $txt. '</mw-djvu>';
+ $xml = $xml . $txt . '</mw-djvu>';
}
}
wfProfileOut( __METHOD__ );
+
return $xml;
}
function pageTextCallback( $matches ) {
# Get rid of invalid UTF-8, strip control characters
- return '<PAGE value="' . htmlspecialchars( UtfNormal::cleanUp( $matches[1] ) ) . '" />';
+ $val = htmlspecialchars( UtfNormal::cleanUp( stripcslashes( $matches[1] ) ) );
+ $val = str_replace( array( "\n", '�' ), array( ' ', '' ), $val );
+ return '<PAGE value="' . $val . '" />';
}
/**
* Hack to temporarily work around djvutoxml bug
- * @return bool|string
+ * @param $dump
+ * @return string
*/
function convertDumpToXML( $dump ) {
if ( strval( $dump ) == '' ) {
if ( preg_match( '/^ *DIRM.*indirect/', $line ) ) {
wfDebug( "Indirect multi-page DjVu document, bad for server!\n" );
+
return false;
}
if ( preg_match( '/^ *FORM:DJVU/', $line ) ) {
}
$xml .= "</BODY>\n</DjVuXML>\n";
+
return $xml;
}
break;
}
- if ( preg_match( '/^ *INFO *\[\d*\] *DjVu *(\d+)x(\d+), *\w*, *(\d+) *dpi, *gamma=([0-9.-]+)/', $line, $m ) ) {
- $xml .= Xml::tags( 'OBJECT',
+ if ( preg_match(
+ '/^ *INFO *\[\d*\] *DjVu *(\d+)x(\d+), *\w*, *(\d+) *dpi, *gamma=([0-9.-]+)/',
+ $line,
+ $m
+ ) ) {
+ $xml .= Xml::tags(
+ 'OBJECT',
array(
#'data' => '',
#'type' => 'image/x.djvu',
#'usemap' => '',
),
"\n" .
- Xml::element( 'PARAM', array( 'name' => 'DPI', 'value' => $m[3] ) ) . "\n" .
- Xml::element( 'PARAM', array( 'name' => 'GAMMA', 'value' => $m[4] ) ) . "\n"
+ Xml::element( 'PARAM', array( 'name' => 'DPI', 'value' => $m[3] ) ) . "\n" .
+ Xml::element( 'PARAM', array( 'name' => 'GAMMA', 'value' => $m[4] ) ) . "\n"
) . "\n";
+
return true;
}
$line = strtok( "\n" );
}
+
# Not found
return false;
}
dépôts / lhc / web / wiklou.git / blobdiff