function addRegularFile($filename, $content, $attrib = false)
{
if (!$attrib)
$attrib = array();
$size = strlen($content);
if (function_exists('gzopen')) {
list($data, $crc32, $os_type) = zip_deflate($content);
if (strlen($data) < $size) {
$content = $data; // Use compressed data.
$comp_type = ZIP_DEFLATE;
} else
unset ($crc32); // force plain store.
}
if (!isset($crc32)) {
$comp_type = ZIP_STORE;
$crc32 = zip_crc32($content);
}
if (!empty($attrib['write_protected']))
$atx = (0100444 << 16) | 1; // S_IFREG + read permissions to
// everybody.
else
$atx = (0100644 << 16); // Add owner write perms.
$ati = $attrib['is_ascii'] ? 1 : 0;
if (empty($attrib['mtime']))
$attrib['mtime'] = time();
list($mod_date, $mod_time) = unixtime2dostime($attrib['mtime']);
// Construct parts common to "Local file header" and "Central
// directory file header."
if (!isset($attrib['extra_field']))
$attrib['extra_field'] = '';
if (!isset($attrib['file_comment']))
$attrib['file_comment'] = '';
$head = pack(
"vvvvvVVVvv",
20, // Version needed to extract (FIXME: is this right?)
0, // Gen purp bit flag
$comp_type,
$mod_time,
$mod_date,
$crc32,
strlen($content),
$size,
strlen($filename),
strlen($attrib['extra_field'])
);
// Construct the "Local file header"
$lheader = ZIP_LOCHEAD_MAGIC . $head . $filename . $attrib['extra_field'];
// Construct the "central directory file header"
$this->dir .= pack("a4CC", ZIP_CENTHEAD_MAGIC, 23, $os_type);
$this->dir .= $head;
$this->dir .= pack(
"vvvVV",
strlen($attrib['file_comment']),
0, // Disk number start
$ati, // Internal file attributes
$atx, // External file attributes
$this->offset // Relative offset of local header
);
$this->dir .= $filename . $attrib['extra_field'] . $attrib['file_comment'];
// Output the "Local file header" and file contents.
echo $lheader;
echo $content;
$this->offset += strlen($lheader) + strlen($content);
$this->nfiles++;
}
function readFile()
{
$head = $this->_read(30);
// FIXME: This is bad for gzip compressed buffers
extract(unpack("a4magic/vreq_version/vflags/vcomp_type" . "/vmod_time/vmod_date" . "/Vcrc32/Vcomp_size/Vuncomp_size" . "/vfilename_len/vextrafld_len", $head));
if ($magic != ZIP_LOCHEAD_MAGIC) {
// maybe gzip?
//$x = substr($magic,0,3);
if (substr($magic, 0, 3) == " ‹•") {
if ($this->fp) {
fclose($this->fp);
$this->fp = fopen($this->zipfile, "rb");
$content = $this->_read(filesize($this->fp));
} else {
$content = $this->buf;
}
// TODO...
$data = zip_deflate($content);
return array($filename, $data, $attrib);
}
if ($magic != ZIP_CENTHEAD_MAGIC) {
// FIXME: better message?
ExitWiki(sprintf("Unsupported ZIP header type: %s", $magic));
}
return $this->done();
}
if (($flags & 0x21) != 0) {
ExitWiki("Encryption and/or zip patches not supported.");
}
if (($flags & 0x8) != 0) {
// FIXME: better message?
ExitWiki("Postponed CRC not yet supported.");
}
$filename = $this->_read($filename_len);
//FIXME: we should probably check $req_version.
$attrib['mtime'] = dostime2unixtime($mod_date, $mod_time);
if ($extrafld_len != 0) {
$attrib['extra_field'] = $this->_read($extrafld_len);
}
$data = $this->_read($comp_size);
if ($comp_type == ZIP_DEFLATE) {
$data = zip_inflate($data, $crc32, $uncomp_size);
} else {
if ($comp_type == ZIP_STORE) {
$crc = zip_crc32($data);
if ($crc32 != $crc) {
ExitWiki(sprintf("CRC mismatch %x != %x", $crc, $crc32));
}
} else {
ExitWiki(sprintf("Compression method %s unsupported", $comp_method));
}
}
if (strlen($data) != $uncomp_size) {
ExitWiki(sprintf("Uncompressed size mismatch %d != %d", strlen($data), $uncomp_size));
}
return array($filename, $data, $attrib);
}
function addRegularFile($filename, $content, $attrib = false)
{
if (!$attrib) {
$attrib = array();
}
$size = strlen($content);
if (function_exists('gzopen')) {
list($data, $crc32, $os_type) = zip_deflate($content);
if (strlen($data) < $size) {
$content = $data;
// Use compressed data.
$comp_type = ZIP_DEFLATE;
} else {
unset($crc32);
}
// force plain store.
}
if (!isset($crc32)) {
$comp_type = ZIP_STORE;
$crc32 = zip_crc32($content);
}
if (!empty($attrib['write_protected'])) {
$atx = 0100444 << 16 | 1;
} else {
$atx = 0100644 << 16;
}
// Add owner write perms.
$ati = $attrib['is_ascii'] ? 1 : 0;
if (empty($attrib['mtime'])) {
$attrib['mtime'] = time();
}
list($mod_date, $mod_time) = unixtime2dostime($attrib['mtime']);
// Construct parts common to "Local file header" and "Central
// directory file header."
if (!isset($attrib['extra_field'])) {
$attrib['extra_field'] = '';
}
if (!isset($attrib['file_comment'])) {
$attrib['file_comment'] = '';
}
$head = pack("vvvvvVVVvv", 20, 0, $comp_type, $mod_time, $mod_date, $crc32, strlen($content), $size, strlen($filename), strlen($attrib['extra_field']));
// Construct the "Local file header"
$lheader = ZIP_LOCHEAD_MAGIC . $head . $filename . $attrib['extra_field'];
// Construct the "central directory file header"
$this->dir .= pack("a4CC", ZIP_CENTHEAD_MAGIC, 23, $os_type);
$this->dir .= $head;
$this->dir .= pack("vvvVV", strlen($attrib['file_comment']), 0, $ati, $atx, $this->offset);
// Relative offset of local header
$this->dir .= $filename . $attrib['extra_field'] . $attrib['file_comment'];
// Output the "Local file header" and file contents.
echo $lheader;
echo $content;
$this->offset += strlen($lheader) + strlen($content);
$this->nfiles++;
}
