X-Git-Url: https://git.rvb.name/openlib.git/blobdiff_plain/a47401f5fac121db5eb44214530121ab14cba2f3..6b3a07a008979ee27733a2deae2ff4fc42f4a535:/www/resources/php-epub-meta/tbszip.php
diff --git a/www/resources/php-epub-meta/tbszip.php b/www/resources/php-epub-meta/tbszip.php
new file mode 100644
index 0000000..fbbb8cb
--- /dev/null
+++ b/www/resources/php-epub-meta/tbszip.php
@@ -0,0 +1,924 @@
+Meth8Ok = extension_loaded('zlib'); // check if Zlib extension is available. This is need for compress and uncompress with method 8.
+ $this->DisplayError = true;
+ $this->ArchFile = '';
+ $this->Error = false;
+ }
+
+ function CreateNew($ArchName='new.zip') {
+ // Create a new virtual empty archive, the name will be the default name when the archive is flushed.
+ if (!isset($this->Meth8Ok)) $this->__construct(); // for PHP 4 compatibility
+ $this->Close(); // note that $this->ArchHnd is set to false here
+ $this->Error = false;
+ $this->ArchFile = $ArchName;
+ $this->ArchIsNew = true;
+ $bin = 'PK'.chr(05).chr(06).str_repeat(chr(0), 18);
+ $this->CdEndPos = strlen($bin) - 4;
+ $this->CdInfo = array('disk_num_curr'=>0, 'disk_num_cd'=>0, 'file_nbr_curr'=>0, 'file_nbr_tot'=>0, 'l_cd'=>0, 'p_cd'=>0, 'l_comm'=>0, 'v_comm'=>'', 'bin'=>$bin);
+ $this->CdPos = $this->CdInfo['p_cd'];
+ }
+
+ function Open($ArchFile, $UseIncludePath=false) {
+ // Open the zip archive
+ if (!isset($this->Meth8Ok)) $this->__construct(); // for PHP 4 compatibility
+ $this->Close(); // close handle and init info
+ $this->Error = false;
+ $this->ArchFile = $ArchFile;
+ $this->ArchIsNew = false;
+ // open the file
+ $this->ArchHnd = fopen($ArchFile, 'rb', $UseIncludePath);
+ $ok = !($this->ArchHnd===false);
+ if ($ok) $ok = $this->CentralDirRead();
+ return $ok;
+ }
+
+ function Close() {
+ if (isset($this->ArchHnd) and ($this->ArchHnd!==false)) fclose($this->ArchHnd);
+ $this->ArchFile = '';
+ $this->ArchHnd = false;
+ $this->CdInfo = array();
+ $this->CdFileLst = array();
+ $this->CdFileNbr = 0;
+ $this->CdFileByName = array();
+ $this->VisFileLst = array();
+ $this->ArchCancelModif();
+ }
+
+ function ArchCancelModif() {
+ $this->LastReadComp = false; // compression of the last read file (1=compressed, 0=stored not compressed, -1= stored compressed but read uncompressed)
+ $this->LastReadIdx = false; // index of the last file read
+ $this->ReplInfo = array();
+ $this->ReplByPos = array();
+ $this->AddInfo = array();
+ }
+
+ function FileAdd($Name, $Data, $DataType=TBSZIP_STRING, $Compress=true) {
+
+ if ($Data===false) return $this->FileCancelModif($Name, false); // Cancel a previously added file
+
+ // Save information for adding a new file into the archive
+ $Diff = 30 + 46 + 2*strlen($Name); // size of the header + cd info
+ $Ref = $this->_DataCreateNewRef($Data, $DataType, $Compress, $Diff, $Name);
+ if ($Ref===false) return false;
+ $Ref['name'] = $Name;
+ $this->AddInfo[] = $Ref;
+ return $Ref['res'];
+
+ }
+
+ function CentralDirRead() {
+ $cd_info = 'PK'.chr(05).chr(06); // signature of the Central Directory
+ $cd_pos = -22;
+ $this->_MoveTo($cd_pos, SEEK_END);
+ $b = $this->_ReadData(4);
+ if ($b!==$cd_info) return $this->RaiseError('The End of Central Rirectory Record is not found.');
+
+ $this->CdEndPos = ftell($this->ArchHnd) - 4;
+ $this->CdInfo = $this->CentralDirRead_End($cd_info);
+ $this->CdFileLst = array();
+ $this->CdFileNbr = $this->CdInfo['file_nbr_curr'];
+ $this->CdPos = $this->CdInfo['p_cd'];
+
+ if ($this->CdFileNbr<=0) return $this->RaiseError('No header found in the Central Directory.');
+ if ($this->CdPos<=0) return $this->RaiseError('No position found for the Central Directory.');
+
+ $this->_MoveTo($this->CdPos);
+ for ($i=0;$i<$this->CdFileNbr;$i++) {
+ $x = $this->CentralDirRead_File($i);
+ if ($x!==false) {
+ $this->CdFileLst[$i] = $x;
+ $this->CdFileByName[$x['v_name']] = $i;
+ }
+ }
+ return true;
+ }
+
+ function CentralDirRead_End($cd_info) {
+ $b = $cd_info.$this->_ReadData(18);
+ $x = array();
+ $x['disk_num_curr'] = $this->_GetDec($b,4,2); // number of this disk
+ $x['disk_num_cd'] = $this->_GetDec($b,6,2); // number of the disk with the start of the central directory
+ $x['file_nbr_curr'] = $this->_GetDec($b,8,2); // total number of entries in the central directory on this disk
+ $x['file_nbr_tot'] = $this->_GetDec($b,10,2); // total number of entries in the central directory
+ $x['l_cd'] = $this->_GetDec($b,12,4); // size of the central directory
+ $x['p_cd'] = $this->_GetDec($b,16,4); // position of start of central directory with respect to the starting disk number
+ $x['l_comm'] = $this->_GetDec($b,20,2); // .ZIP file comment length
+ $x['v_comm'] = $this->_ReadData($x['l_comm']); // .ZIP file comment
+ $x['bin'] = $b.$x['v_comm'];
+ return $x;
+ }
+
+ function CentralDirRead_File($idx) {
+
+ $b = $this->_ReadData(46);
+
+ $x = $this->_GetHex($b,0,4);
+ if ($x!=='h:02014b50') return $this->RaiseError("Signature of Central Directory Header #".$idx." (file information) expected but not found at position ".$this->_TxtPos(ftell($this->ArchHnd) - 46).".");
+
+ $x = array();
+ $x['vers_used'] = $this->_GetDec($b,4,2);
+ $x['vers_necess'] = $this->_GetDec($b,6,2);
+ $x['purp'] = $this->_GetBin($b,8,2);
+ $x['meth'] = $this->_GetDec($b,10,2);
+ $x['time'] = $this->_GetDec($b,12,2);
+ $x['date'] = $this->_GetDec($b,14,2);
+ $x['crc32'] = $this->_GetDec($b,16,4);
+ $x['l_data_c'] = $this->_GetDec($b,20,4);
+ $x['l_data_u'] = $this->_GetDec($b,24,4);
+ $x['l_name'] = $this->_GetDec($b,28,2);
+ $x['l_fields'] = $this->_GetDec($b,30,2);
+ $x['l_comm'] = $this->_GetDec($b,32,2);
+ $x['disk_num'] = $this->_GetDec($b,34,2);
+ $x['int_file_att'] = $this->_GetDec($b,36,2);
+ $x['ext_file_att'] = $this->_GetDec($b,38,4);
+ $x['p_loc'] = $this->_GetDec($b,42,4);
+ $x['v_name'] = $this->_ReadData($x['l_name']);
+ $x['v_fields'] = $this->_ReadData($x['l_fields']);
+ $x['v_comm'] = $this->_ReadData($x['l_comm']);
+
+ $x['bin'] = $b.$x['v_name'].$x['v_fields'].$x['v_comm'];
+
+ return $x;
+ }
+
+ function RaiseError($Msg) {
+ if ($this->DisplayError) echo ''.get_class($this).' ERROR : '.$Msg.'
'."\r\n";
+ $this->Error = $Msg;
+ return false;
+ }
+
+ function Debug($FileHeaders=false) {
+
+ $this->DisplayError = true;
+
+ if ($FileHeaders) {
+ // Calculations first in order to have error messages before other information
+ $idx = 0;
+ $pos = 0;
+ $pos_stop = $this->CdInfo['p_cd'];
+ $this->_MoveTo($pos);
+ while ( ($pos<$pos_stop) && ($ok = $this->_ReadFile($idx,false)) ) {
+ $this->VisFileLst[$idx]['p_this_header (debug_mode only)'] = $pos;
+ $pos = ftell($this->ArchHnd);
+ $idx++;
+ }
+ }
+
+ $nl = "\r\n";
+ echo "";
+
+ echo "-------------------------------".$nl;
+ echo "End of Central Directory record".$nl;
+ echo "-------------------------------".$nl;
+ print_r($this->DebugArray($this->CdInfo));
+
+ echo $nl;
+ echo "-------------------------".$nl;
+ echo "Central Directory headers".$nl;
+ echo "-------------------------".$nl;
+ print_r($this->DebugArray($this->CdFileLst));
+
+ if ($FileHeaders) {
+ echo $nl;
+ echo "------------------".$nl;
+ echo "Local File headers".$nl;
+ echo "------------------".$nl;
+ print_r($this->DebugArray($this->VisFileLst));
+ }
+
+ echo "";
+
+ }
+
+ function DebugArray($arr) {
+ foreach ($arr as $k=>$v) {
+ if (is_array($v)) {
+ $arr[$k] = $this->DebugArray($v);
+ } elseif (substr($k,0,2)=='p_') {
+ $arr[$k] = $this->_TxtPos($v);
+ }
+ }
+ return $arr;
+ }
+
+ function FileExists($NameOrIdx) {
+ return ($this->FileGetIdx($NameOrIdx)!==false);
+ }
+
+ function FileGetIdx($NameOrIdx) {
+ // Check if a file name, or a file index exists in the Central Directory, and return its index
+ if (is_string($NameOrIdx)) {
+ if (isset($this->CdFileByName[$NameOrIdx])) {
+ return $this->CdFileByName[$NameOrIdx];
+ } else {
+ return false;
+ }
+ } else {
+ if (isset($this->CdFileLst[$NameOrIdx])) {
+ return $NameOrIdx;
+ } else {
+ return false;
+ }
+ }
+ }
+
+ function FileGetIdxAdd($Name) {
+ // Check if a file name exists in the list of file to add, and return its index
+ if (!is_string($Name)) return false;
+ $idx_lst = array_keys($this->AddInfo);
+ foreach ($idx_lst as $idx) {
+ if ($this->AddInfo[$idx]['name']===$Name) return $idx;
+ }
+ return false;
+ }
+
+ function FileRead($NameOrIdx, $Uncompress=true) {
+
+ $this->LastReadComp = false; // means the file is not found
+ $this->LastReadIdx = false;
+
+ $idx = $this->FileGetIdx($NameOrIdx);
+ if ($idx===false) return $this->RaiseError('File "'.$NameOrIdx.'" is not found in the Central Directory.');
+
+ $pos = $this->CdFileLst[$idx]['p_loc'];
+ $this->_MoveTo($pos);
+
+ $this->LastReadIdx = $idx; // Can be usefull to get the idx
+
+ $Data = $this->_ReadFile($idx, true);
+
+ // Manage uncompression
+ $Comp = 1; // means the contents stays compressed
+ $meth = $this->CdFileLst[$idx]['meth'];
+ if ($meth==8) {
+ if ($Uncompress) {
+ if ($this->Meth8Ok) {
+ $Data = gzinflate($Data);
+ $Comp = -1; // means uncompressed
+ } else {
+ $this->RaiseError('Unable to uncompress file "'.$NameOrIdx.'" because extension Zlib is not installed.');
+ }
+ }
+ } elseif($meth==0) {
+ $Comp = 0; // means stored without compression
+ } else {
+ if ($Uncompress) $this->RaiseError('Unable to uncompress file "'.$NameOrIdx.'" because it is compressed with method '.$meth.'.');
+ }
+ $this->LastReadComp = $Comp;
+
+ return $Data;
+
+ }
+
+ function _ReadFile($idx, $ReadData) {
+ // read the file header (and maybe the data ) in the archive, assuming the cursor in at a new file position
+
+ $b = $this->_ReadData(30);
+
+ $x = $this->_GetHex($b,0,4);
+ if ($x!=='h:04034b50') return $this->RaiseError("Signature of Local File Header #".$idx." (data section) expected but not found at position ".$this->_TxtPos(ftell($this->ArchHnd)-30).".");
+
+ $x = array();
+ $x['vers'] = $this->_GetDec($b,4,2);
+ $x['purp'] = $this->_GetBin($b,6,2);
+ $x['meth'] = $this->_GetDec($b,8,2);
+ $x['time'] = $this->_GetDec($b,10,2);
+ $x['date'] = $this->_GetDec($b,12,2);
+ $x['crc32'] = $this->_GetDec($b,14,4);
+ $x['l_data_c'] = $this->_GetDec($b,18,4);
+ $x['l_data_u'] = $this->_GetDec($b,22,4);
+ $x['l_name'] = $this->_GetDec($b,26,2);
+ $x['l_fields'] = $this->_GetDec($b,28,2);
+ $x['v_name'] = $this->_ReadData($x['l_name']);
+ $x['v_fields'] = $this->_ReadData($x['l_fields']);
+
+ $x['bin'] = $b.$x['v_name'].$x['v_fields'];
+
+ // Read Data
+ if (isset($this->CdFileLst[$idx])) {
+ $len_cd = $this->CdFileLst[$idx]['l_data_c'];
+ if ($x['l_data_c']==0) {
+ // Sometimes, the size is not specified in the local information.
+ $len = $len_cd;
+ } else {
+ $len = $x['l_data_c'];
+ if ($len!=$len_cd) {
+ //echo "TbsZip Warning: Local information for file #".$idx." says len=".$len.", while Central Directory says len=".$len_cd.".";
+ }
+ }
+ } else {
+ $len = $x['l_data_c'];
+ if ($len==0) $this->RaiseError("File Data #".$idx." cannt be read because no length is specified in the Local File Header and its Central Directory information has not been found.");
+ }
+
+ if ($ReadData) {
+ $Data = $this->_ReadData($len);
+ } else {
+ $this->_MoveTo($len, SEEK_CUR);
+ }
+
+ // Description information
+ $desc_ok = ($x['purp'][2+3]=='1');
+ if ($desc_ok) {
+ $b = $this->_ReadData(12);
+ $s = $this->_GetHex($b,0,4);
+ $d = 0;
+ // the specification says the signature may or may not be present
+ if ($s=='h:08074b50') {
+ $b .= $this->_ReadData(4);
+ $d = 4;
+ $x['desc_bin'] = $b;
+ $x['desc_sign'] = $s;
+ } else {
+ $x['desc_bin'] = $b;
+ }
+ $x['desc_crc32'] = $this->_GetDec($b,0+$d,4);
+ $x['desc_l_data_c'] = $this->_GetDec($b,4+$d,4);
+ $x['desc_l_data_u'] = $this->_GetDec($b,8+$d,4);
+ }
+
+ // Save file info without the data
+ $this->VisFileLst[$idx] = $x;
+
+ // Return the info
+ if ($ReadData) {
+ return $Data;
+ } else {
+ return true;
+ }
+
+ }
+
+ function FileReplace($NameOrIdx, $Data, $DataType=TBSZIP_STRING, $Compress=true) {
+ // Store replacement information.
+
+ $idx = $this->FileGetIdx($NameOrIdx);
+ if ($idx===false) return $this->RaiseError('File "'.$NameOrIdx.'" is not found in the Central Directory.');
+
+ $pos = $this->CdFileLst[$idx]['p_loc'];
+
+ if ($Data===false) {
+ // file to delete
+ $this->ReplInfo[$idx] = false;
+ $Result = true;
+ } else {
+ // file to replace
+ $Diff = - $this->CdFileLst[$idx]['l_data_c'];
+ $Ref = $this->_DataCreateNewRef($Data, $DataType, $Compress, $Diff, $NameOrIdx);
+ if ($Ref===false) return false;
+ $this->ReplInfo[$idx] = $Ref;
+ $Result = $Ref['res'];
+ }
+
+ $this->ReplByPos[$pos] = $idx;
+
+ return $Result;
+
+ }
+
+ function FileCancelModif($NameOrIdx, $ReplacedAndDeleted=true) {
+ // cancel added, modified or deleted modifications on a file in the archive
+ // return the number of cancels
+
+ $nbr = 0;
+
+ if ($ReplacedAndDeleted) {
+ // replaced or deleted files
+ $idx = $this->FileGetIdx($NameOrIdx);
+ if ($idx!==false) {
+ if (isset($this->ReplInfo[$idx])) {
+ $pos = $this->CdFileLst[$idx]['p_loc'];
+ unset($this->ReplByPos[$pos]);
+ unset($this->ReplInfo[$idx]);
+ $nbr++;
+ }
+ }
+ }
+
+ // added files
+ $idx = $this->FileGetIdxAdd($NameOrIdx);
+ if ($idx!==false) {
+ unset($this->AddInfo[$idx]);
+ $nbr++;
+ }
+
+ return $nbr;
+
+ }
+
+ function Flush($Render=TBSZIP_DOWNLOAD, $File='', $ContentType='') {
+
+ if ( ($File!=='') && ($this->ArchFile===$File)) {
+ $this->RaiseError('Method Flush() cannot overwrite the current opened archive: \''.$File.'\''); // this makes corrupted zip archives without PHP error.
+ return false;
+ }
+
+ $ArchPos = 0;
+ $Delta = 0;
+ $FicNewPos = array();
+ $DelLst = array(); // idx of deleted files
+ $DeltaCdLen = 0; // delta of the CD's size
+
+ $now = time();
+ $date = $this->_MsDos_Date($now);
+ $time = $this->_MsDos_Time($now);
+
+ if (!$this->OutputOpen($Render, $File, $ContentType)) return false;
+
+ // output modified zipped files and unmodified zipped files that are beetween them
+ ksort($this->ReplByPos);
+ foreach ($this->ReplByPos as $ReplPos => $ReplIdx) {
+ // output data from the zip archive which is before the data to replace
+ $this->OutputFromArch($ArchPos, $ReplPos);
+ // get current file information
+ if (!isset($this->VisFileLst[$ReplIdx])) $this->_ReadFile($ReplIdx, false);
+ $FileInfo =& $this->VisFileLst[$ReplIdx];
+ $b1 = $FileInfo['bin'];
+ if (isset($FileInfo['desc_bin'])) {
+ $b2 = $FileInfo['desc_bin'];
+ } else {
+ $b2 = '';
+ }
+ $info_old_len = strlen($b1) + $this->CdFileLst[$ReplIdx]['l_data_c'] + strlen($b2); // $FileInfo['l_data_c'] may have a 0 value in some archives
+ // get replacement information
+ $ReplInfo =& $this->ReplInfo[$ReplIdx];
+ if ($ReplInfo===false) {
+ // The file is to be deleted
+ $Delta = $Delta - $info_old_len; // headers and footers are also deleted
+ $DelLst[$ReplIdx] = true;
+ } else {
+ // prepare the header of the current file
+ $this->_DataPrepare($ReplInfo); // get data from external file if necessary
+ $this->_PutDec($b1, $time, 10, 2); // time
+ $this->_PutDec($b1, $date, 12, 2); // date
+ $this->_PutDec($b1, $ReplInfo['crc32'], 14, 4); // crc32
+ $this->_PutDec($b1, $ReplInfo['len_c'], 18, 4); // l_data_c
+ $this->_PutDec($b1, $ReplInfo['len_u'], 22, 4); // l_data_u
+ if ($ReplInfo['meth']!==false) $this->_PutDec($b1, $ReplInfo['meth'], 8, 2); // meth
+ // prepare the bottom description if the zipped file, if any
+ if ($b2!=='') {
+ $d = (strlen($b2)==16) ? 4 : 0; // offset because of the signature if any
+ $this->_PutDec($b2, $ReplInfo['crc32'], $d+0, 4); // crc32
+ $this->_PutDec($b2, $ReplInfo['len_c'], $d+4, 4); // l_data_c
+ $this->_PutDec($b2, $ReplInfo['len_u'], $d+8, 4); // l_data_u
+ }
+ // output data
+ $this->OutputFromString($b1.$ReplInfo['data'].$b2);
+ unset($ReplInfo['data']); // save PHP memory
+ $Delta = $Delta + $ReplInfo['diff'] + $ReplInfo['len_c'];
+ }
+ // Update the delta of positions for zipped files which are physically after the currently replaced one
+ for ($i=0;$i<$this->CdFileNbr;$i++) {
+ if ($this->CdFileLst[$i]['p_loc']>$ReplPos) {
+ $FicNewPos[$i] = $this->CdFileLst[$i]['p_loc'] + $Delta;
+ }
+ }
+ // Update the current pos in the archive
+ $ArchPos = $ReplPos + $info_old_len;
+ }
+
+ // Ouput all the zipped files that remain before the Central Directory listing
+ if ($this->ArchHnd!==false) $this->OutputFromArch($ArchPos, $this->CdPos); // ArchHnd is false if CreateNew() has been called
+ $ArchPos = $this->CdPos;
+
+ // Output file to add
+ $AddNbr = count($this->AddInfo);
+ $AddDataLen = 0; // total len of added data (inlcuding file headers)
+ if ($AddNbr>0) {
+ $AddPos = $ArchPos + $Delta; // position of the start
+ $AddLst = array_keys($this->AddInfo);
+ foreach ($AddLst as $idx) {
+ $n = $this->_DataOuputAddedFile($idx, $AddPos);
+ $AddPos += $n;
+ $AddDataLen += $n;
+ }
+ }
+
+ // Modifiy file information in the Central Directory for replaced files
+ $b2 = '';
+ $old_cd_len = 0;
+ for ($i=0;$i<$this->CdFileNbr;$i++) {
+ $b1 = $this->CdFileLst[$i]['bin'];
+ $old_cd_len += strlen($b1);
+ if (!isset($DelLst[$i])) {
+ if (isset($FicNewPos[$i])) $this->_PutDec($b1, $FicNewPos[$i], 42, 4); // p_loc
+ if (isset($this->ReplInfo[$i])) {
+ $ReplInfo =& $this->ReplInfo[$i];
+ $this->_PutDec($b1, $time, 12, 2); // time
+ $this->_PutDec($b1, $date, 14, 2); // date
+ $this->_PutDec($b1, $ReplInfo['crc32'], 16, 4); // crc32
+ $this->_PutDec($b1, $ReplInfo['len_c'], 20, 4); // l_data_c
+ $this->_PutDec($b1, $ReplInfo['len_u'], 24, 4); // l_data_u
+ if ($ReplInfo['meth']!==false) $this->_PutDec($b1, $ReplInfo['meth'], 10, 2); // meth
+ }
+ $b2 .= $b1;
+ }
+ }
+ $this->OutputFromString($b2);
+ $ArchPos += $old_cd_len;
+ $DeltaCdLen = $DeltaCdLen + strlen($b2) - $old_cd_len;
+
+ // Output until "end of central directory record"
+ if ($this->ArchHnd!==false) $this->OutputFromArch($ArchPos, $this->CdEndPos); // ArchHnd is false if CreateNew() has been called
+
+ // Output file information of the Central Directory for added files
+ if ($AddNbr>0) {
+ $b2 = '';
+ foreach ($AddLst as $idx) {
+ $b2 .= $this->AddInfo[$idx]['bin'];
+ }
+ $this->OutputFromString($b2);
+ $DeltaCdLen += strlen($b2);
+ }
+
+ // Output "end of central directory record"
+ $b2 = $this->CdInfo['bin'];
+ $DelNbr = count($DelLst);
+ if ( ($AddNbr>0) or ($DelNbr>0) ) {
+ // total number of entries in the central directory on this disk
+ $n = $this->_GetDec($b2, 8, 2);
+ $this->_PutDec($b2, $n + $AddNbr - $DelNbr, 8, 2);
+ // total number of entries in the central directory
+ $n = $this->_GetDec($b2, 10, 2);
+ $this->_PutDec($b2, $n + $AddNbr - $DelNbr, 10, 2);
+ // size of the central directory
+ $n = $this->_GetDec($b2, 12, 4);
+ $this->_PutDec($b2, $n + $DeltaCdLen, 12, 4);
+ $Delta = $Delta + $AddDataLen;
+ }
+ $this->_PutDec($b2, $this->CdPos+$Delta , 16, 4); // p_cd (offset of start of central directory with respect to the starting disk number)
+ $this->OutputFromString($b2);
+
+ $this->OutputClose();
+
+ return true;
+
+ }
+
+ // ----------------
+ // output functions
+ // ----------------
+
+ function OutputOpen($Render, $File, $ContentType) {
+
+ if (($Render & TBSZIP_FILE)==TBSZIP_FILE) {
+ $this->OutputMode = TBSZIP_FILE;
+ if (''.$File=='') $File = basename($this->ArchFile).'.zip';
+ $this->OutputHandle = @fopen($File, 'w');
+ if ($this->OutputHandle===false) {
+ $this->RaiseError('Method Flush() cannot overwrite the target file \''.$File.'\'. This may not be a valid file path or the file may be locked by another process or because of a denied permission.');
+ return false;
+ }
+ } elseif (($Render & TBSZIP_STRING)==TBSZIP_STRING) {
+ $this->OutputMode = TBSZIP_STRING;
+ $this->OutputSrc = '';
+ } elseif (($Render & TBSZIP_DOWNLOAD)==TBSZIP_DOWNLOAD) {
+ $this->OutputMode = TBSZIP_DOWNLOAD;
+ // Output the file
+ if (''.$File=='') $File = basename($this->ArchFile);
+ if (($Render & TBSZIP_NOHEADER)==TBSZIP_NOHEADER) {
+ } else {
+ header ('Pragma: no-cache');
+ if ($ContentType!='') header ('Content-Type: '.$ContentType);
+ header('Content-Disposition: attachment; filename="'.$File.'"');
+ header('Expires: 0');
+ header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
+ header('Cache-Control: public');
+ header('Content-Description: File Transfer');
+ header('Content-Transfer-Encoding: binary');
+ $Len = $this->_EstimateNewArchSize();
+ if ($Len!==false) header('Content-Length: '.$Len);
+ }
+ }
+
+ return true;
+
+ }
+
+ function OutputFromArch($pos, $pos_stop) {
+ $len = $pos_stop - $pos;
+ if ($len<0) return;
+ $this->_MoveTo($pos);
+ $block = 1024;
+ while ($len>0) {
+ $l = min($len, $block);
+ $x = $this->_ReadData($l);
+ $this->OutputFromString($x);
+ $len = $len - $l;
+ }
+ unset($x);
+ }
+
+ function OutputFromString($data) {
+ if ($this->OutputMode===TBSZIP_DOWNLOAD) {
+ echo $data; // donwload
+ } elseif ($this->OutputMode===TBSZIP_STRING) {
+ $this->OutputSrc .= $data; // to string
+ } elseif (TBSZIP_FILE) {
+ fwrite($this->OutputHandle, $data); // to file
+ }
+ }
+
+ function OutputClose() {
+ if ( ($this->OutputMode===TBSZIP_FILE) && ($this->OutputHandle!==false) ) {
+ fclose($this->OutputHandle);
+ $this->OutputHandle = false;
+ }
+ }
+
+ // ----------------
+ // Reading functions
+ // ----------------
+
+ function _MoveTo($pos, $relative = SEEK_SET) {
+ fseek($this->ArchHnd, $pos, $relative);
+ }
+
+ function _ReadData($len) {
+ if ($len>0) {
+ $x = fread($this->ArchHnd, $len);
+ return $x;
+ } else {
+ return '';
+ }
+ }
+
+ // ----------------
+ // Take info from binary data
+ // ----------------
+
+ function _GetDec($txt, $pos, $len) {
+ $x = substr($txt, $pos, $len);
+ $z = 0;
+ for ($i=0;$i<$len;$i++) {
+ $asc = ord($x[$i]);
+ if ($asc>0) $z = $z + $asc*pow(256,$i);
+ }
+ return $z;
+ }
+
+ function _GetHex($txt, $pos, $len) {
+ $x = substr($txt, $pos, $len);
+ return 'h:'.bin2hex(strrev($x));
+ }
+
+ function _GetBin($txt, $pos, $len) {
+ $x = substr($txt, $pos, $len);
+ $z = '';
+ for ($i=0;$i<$len;$i++) {
+ $asc = ord($x[$i]);
+ if (isset($x[$i])) {
+ for ($j=0;$j<8;$j++) {
+ $z .= ($asc & pow(2,$j)) ? '1' : '0';
+ }
+ } else {
+ $z .= '00000000';
+ }
+ }
+ return 'b:'.$z;
+ }
+
+ // ----------------
+ // Put info into binary data
+ // ----------------
+
+ function _PutDec(&$txt, $val, $pos, $len) {
+ $x = '';
+ for ($i=0;$i<$len;$i++) {
+ if ($val==0) {
+ $z = 0;
+ } else {
+ $z = intval($val % 256);
+ if (($val<0) && ($z!=0)) { // ($z!=0) is very important, example: val=-420085702
+ // special opration for negative value. If the number id too big, PHP stores it into a signed integer. For example: crc32('coucou') => -256185401 instead of 4038781895. NegVal = BigVal - (MaxVal+1) = BigVal - 256^4
+ $val = ($val - $z)/256 -1;
+ $z = 256 + $z;
+ } else {
+ $val = ($val - $z)/256;
+ }
+ }
+ $x .= chr($z);
+ }
+ $txt = substr_replace($txt, $x, $pos, $len);
+ }
+
+ function _MsDos_Date($Timestamp = false) {
+ // convert a date-time timstamp into the MS-Dos format
+ $d = ($Timestamp===false) ? getdate() : getdate($Timestamp);
+ return (($d['year']-1980)*512) + ($d['mon']*32) + $d['mday'];
+ }
+ function _MsDos_Time($Timestamp = false) {
+ // convert a date-time timstamp into the MS-Dos format
+ $d = ($Timestamp===false) ? getdate() : getdate($Timestamp);
+ return ($d['hours']*2048) + ($d['minutes']*32) + intval($d['seconds']/2); // seconds are rounded to an even number in order to save 1 bit
+ }
+
+ function _MsDos_Debug($date, $time) {
+ // Display the formated date and time. Just for debug purpose.
+ // date end time are encoded on 16 bits (2 bytes) : date = yyyyyyymmmmddddd , time = hhhhhnnnnnssssss
+ $y = ($date & 65024)/512 + 1980;
+ $m = ($date & 480)/32;
+ $d = ($date & 31);
+ $h = ($time & 63488)/2048;
+ $i = ($time & 1984)/32;
+ $s = ($time & 31) * 2; // seconds have been rounded to an even number in order to save 1 bit
+ return $y.'-'.str_pad($m,2,'0',STR_PAD_LEFT).'-'.str_pad($d,2,'0',STR_PAD_LEFT).' '.str_pad($h,2,'0',STR_PAD_LEFT).':'.str_pad($i,2,'0',STR_PAD_LEFT).':'.str_pad($s,2,'0',STR_PAD_LEFT);
+ }
+
+ function _TxtPos($pos) {
+ // Return the human readable position in both decimal and hexa
+ return $pos." (h:".dechex($pos).")";
+ }
+
+ function _DataOuputAddedFile($Idx, $PosLoc) {
+
+ $Ref =& $this->AddInfo[$Idx];
+ $this->_DataPrepare($Ref); // get data from external file if necessary
+
+ // Other info
+ $now = time();
+ $date = $this->_MsDos_Date($now);
+ $time = $this->_MsDos_Time($now);
+ $len_n = strlen($Ref['name']);
+ $purp = 2048 ; // purpose // +8 to indicates that there is an extended local header
+
+ // Header for file in the data section
+ $b = 'PK'.chr(03).chr(04).str_repeat(' ',26); // signature
+ $this->_PutDec($b,20,4,2); //vers = 20
+ $this->_PutDec($b,$purp,6,2); // purp
+ $this->_PutDec($b,$Ref['meth'],8,2); // meth
+ $this->_PutDec($b,$time,10,2); // time
+ $this->_PutDec($b,$date,12,2); // date
+ $this->_PutDec($b,$Ref['crc32'],14,4); // crc32
+ $this->_PutDec($b,$Ref['len_c'],18,4); // l_data_c
+ $this->_PutDec($b,$Ref['len_u'],22,4); // l_data_u
+ $this->_PutDec($b,$len_n,26,2); // l_name
+ $this->_PutDec($b,0,28,2); // l_fields
+ $b .= $Ref['name']; // name
+ $b .= ''; // fields
+
+ // Output the data
+ $this->OutputFromString($b.$Ref['data']);
+ $OutputLen = strlen($b) + $Ref['len_c']; // new position of the cursor
+ unset($Ref['data']); // save PHP memory
+
+ // Information for file in the Central Directory
+ $b = 'PK'.chr(01).chr(02).str_repeat(' ',42); // signature
+ $this->_PutDec($b,20,4,2); // vers_used = 20
+ $this->_PutDec($b,20,6,2); // vers_necess = 20
+ $this->_PutDec($b,$purp,8,2); // purp
+ $this->_PutDec($b,$Ref['meth'],10,2); // meth
+ $this->_PutDec($b,$time,12,2); // time
+ $this->_PutDec($b,$date,14,2); // date
+ $this->_PutDec($b,$Ref['crc32'],16,4); // crc32
+ $this->_PutDec($b,$Ref['len_c'],20,4); // l_data_c
+ $this->_PutDec($b,$Ref['len_u'],24,4); // l_data_u
+ $this->_PutDec($b,$len_n,28,2); // l_name
+ $this->_PutDec($b,0,30,2); // l_fields
+ $this->_PutDec($b,0,32,2); // l_comm
+ $this->_PutDec($b,0,34,2); // disk_num
+ $this->_PutDec($b,0,36,2); // int_file_att
+ $this->_PutDec($b,0,38,4); // ext_file_att
+ $this->_PutDec($b,$PosLoc,42,4); // p_loc
+ $b .= $Ref['name']; // v_name
+ $b .= ''; // v_fields
+ $b .= ''; // v_comm
+
+ $Ref['bin'] = $b;
+
+ return $OutputLen;
+
+ }
+
+ function _DataCreateNewRef($Data, $DataType, $Compress, $Diff, $NameOrIdx) {
+
+ if (is_array($Compress)) {
+ $result = 2;
+ $meth = $Compress['meth'];
+ $len_u = $Compress['len_u'];
+ $crc32 = $Compress['crc32'];
+ $Compress = false;
+ } elseif ($Compress and ($this->Meth8Ok)) {
+ $result = 1;
+ $meth = 8;
+ $len_u = false; // means unknown
+ $crc32 = false;
+ } else {
+ $result = ($Compress) ? -1 : 0;
+ $meth = 0;
+ $len_u = false;
+ $crc32 = false;
+ $Compress = false;
+ }
+
+ if ($DataType==TBSZIP_STRING) {
+ $path = false;
+ if ($Compress) {
+ // we compress now in order to save PHP memory
+ $len_u = strlen($Data);
+ $crc32 = crc32($Data);
+ $Data = gzdeflate($Data);
+ $len_c = strlen($Data);
+ } else {
+ $len_c = strlen($Data);
+ if ($len_u===false) {
+ $len_u = $len_c;
+ $crc32 = crc32($Data);
+ }
+ }
+ } else {
+ $path = $Data;
+ $Data = false;
+ if (file_exists($path)) {
+ $fz = filesize($path);
+ if ($len_u===false) $len_u = $fz;
+ $len_c = ($Compress) ? false : $fz;
+ } else {
+ return $this->RaiseError("Cannot add the file '".$path."' because it is not found.");
+ }
+ }
+
+ // at this step $Data and $crc32 can be false only in case of external file, and $len_c is false only in case of external file to compress
+ return array('data'=>$Data, 'path'=>$path, 'meth'=>$meth, 'len_u'=>$len_u, 'len_c'=>$len_c, 'crc32'=>$crc32, 'diff'=>$Diff, 'res'=>$result);
+
+ }
+
+ function _DataPrepare(&$Ref) {
+ // returns the real size of data
+ if ($Ref['path']!==false) {
+ $Ref['data'] = file_get_contents($Ref['path']);
+ if ($Ref['crc32']===false) $Ref['crc32'] = crc32($Ref['data']);
+ if ($Ref['len_c']===false) {
+ // means the data must be compressed
+ $Ref['data'] = gzdeflate($Ref['data']);
+ $Ref['len_c'] = strlen($Ref['data']);
+ }
+ }
+ }
+
+ function _EstimateNewArchSize($Optim=true) {
+ // Return the size of the new archive, or false if it cannot be calculated (because of external file that must be compressed before to be insered)
+
+ if ($this->ArchIsNew) {
+ $Len = strlen($this->CdInfo['bin']);
+ } else {
+ $Len = filesize($this->ArchFile);
+ }
+
+ // files to replace or delete
+ foreach ($this->ReplByPos as $i) {
+ $Ref =& $this->ReplInfo[$i];
+ if ($Ref===false) {
+ // file to delete
+ $Info =& $this->CdFileLst[$i];
+ if (!isset($this->VisFileLst[$i])) {
+ if ($Optim) return false; // if $Optimization is set to true, then we d'ont rewind to read information
+ $this->_MoveTo($Info['p_loc']);
+ $this->_ReadFile($i, false);
+ }
+ $Vis =& $this->VisFileLst[$i];
+ $Len += -strlen($Vis['bin']) -strlen($Info['bin']) - $Info['l_data_c'];
+ if (isset($Vis['desc_bin'])) $Len += -strlen($Vis['desc_bin']);
+ } elseif ($Ref['len_c']===false) {
+ return false; // information not yet known
+ } else {
+ // file to replace
+ $Len += $Ref['len_c'] + $Ref['diff'];
+ }
+ }
+
+ // files to add
+ $i_lst = array_keys($this->AddInfo);
+ foreach ($i_lst as $i) {
+ $Ref =& $this->AddInfo[$i];
+ if ($Ref['len_c']===false) {
+ return false; // information not yet known
+ } else {
+ $Len += $Ref['len_c'] + $Ref['diff'];
+ }
+ }
+
+ return $Len;
+
+ }
+
+}
\ No newline at end of file