diff options
Diffstat (limited to 'framework/3rdParty/adodb/adodb-csvlib.inc.php')
-rw-r--r-- | framework/3rdParty/adodb/adodb-csvlib.inc.php | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/framework/3rdParty/adodb/adodb-csvlib.inc.php b/framework/3rdParty/adodb/adodb-csvlib.inc.php new file mode 100644 index 00000000..073c20f0 --- /dev/null +++ b/framework/3rdParty/adodb/adodb-csvlib.inc.php @@ -0,0 +1,312 @@ +<?php + +// security - hide paths +if (!defined('ADODB_DIR')) die(); + +global $ADODB_INCLUDED_CSV; +$ADODB_INCLUDED_CSV = 1; + +/* + + V4.81 3 May 2006 (c) 2000-2006 John Lim (jlim#natsoft.com.my). All rights reserved. + Released under both BSD license and Lesser GPL library license. + Whenever there is any discrepancy between the two licenses, + the BSD license will take precedence. See License.txt. + Set tabs to 4 for best viewing. + + Latest version is available at http://adodb.sourceforge.net + + Library for CSV serialization. This is used by the csv/proxy driver and is the + CacheExecute() serialization format. + + ==== NOTE ==== + Format documented at http://php.weblogs.com/ADODB_CSV + ============== +*/ + + /** + * convert a recordset into special format + * + * @param rs the recordset + * + * @return the CSV formated data + */ + function _rs2serialize(&$rs,$conn=false,$sql='') + { + $max = ($rs) ? $rs->FieldCount() : 0; + + if ($sql) $sql = urlencode($sql); + // metadata setup + + if ($max <= 0 || $rs->dataProvider == 'empty') { // is insert/update/delete + if (is_object($conn)) { + $sql .= ','.$conn->Affected_Rows(); + $sql .= ','.$conn->Insert_ID(); + } else + $sql .= ',,'; + + $text = "====-1,0,$sql\n"; + return $text; + } + $tt = ($rs->timeCreated) ? $rs->timeCreated : time(); + + ## changed format from ====0 to ====1 + $line = "====1,$tt,$sql\n"; + + if ($rs->databaseType == 'array') { + $rows =& $rs->_array; + } else { + $rows = array(); + while (!$rs->EOF) { + $rows[] = $rs->fields; + $rs->MoveNext(); + } + } + + for($i=0; $i < $max; $i++) { + $o =& $rs->FetchField($i); + $flds[] = $o; + } + + $savefetch = isset($rs->adodbFetchMode) ? $rs->adodbFetchMode : $rs->fetchMode; + $class = $rs->connection->arrayClass; + $rs2 = new $class(); + $rs2->sql = $rs->sql; + $rs2->oldProvider = $rs->dataProvider; + $rs2->InitArrayFields($rows,$flds); + $rs2->fetchMode = $savefetch; + return $line.serialize($rs2); + } + + +/** +* Open CSV file and convert it into Data. +* +* @param url file/ftp/http url +* @param err returns the error message +* @param timeout dispose if recordset has been alive for $timeout secs +* +* @return recordset, or false if error occured. If no +* error occurred in sql INSERT/UPDATE/DELETE, +* empty recordset is returned +*/ + function &csv2rs($url,&$err,$timeout=0, $rsclass='ADORecordSet_array') + { + $false = false; + $err = false; + $fp = @fopen($url,'rb'); + if (!$fp) { + $err = $url.' file/URL not found'; + return $false; + } + @flock($fp, LOCK_SH); + $arr = array(); + $ttl = 0; + + if ($meta = fgetcsv($fp, 32000, ",")) { + // check if error message + if (strncmp($meta[0],'****',4) === 0) { + $err = trim(substr($meta[0],4,1024)); + fclose($fp); + return $false; + } + // check for meta data + // $meta[0] is -1 means return an empty recordset + // $meta[1] contains a time + + if (strncmp($meta[0], '====',4) === 0) { + + if ($meta[0] == "====-1") { + if (sizeof($meta) < 5) { + $err = "Corrupt first line for format -1"; + fclose($fp); + return $false; + } + fclose($fp); + + if ($timeout > 0) { + $err = " Illegal Timeout $timeout "; + return $false; + } + + $rs = new $rsclass($val=true); + $rs->fields = array(); + $rs->timeCreated = $meta[1]; + $rs->EOF = true; + $rs->_numOfFields = 0; + $rs->sql = urldecode($meta[2]); + $rs->affectedrows = (integer)$meta[3]; + $rs->insertid = $meta[4]; + return $rs; + } + # Under high volume loads, we want only 1 thread/process to _write_file + # so that we don't have 50 processes queueing to write the same data. + # We use probabilistic timeout, ahead of time. + # + # -4 sec before timeout, give processes 1/32 chance of timing out + # -2 sec before timeout, give processes 1/16 chance of timing out + # -1 sec after timeout give processes 1/4 chance of timing out + # +0 sec after timeout, give processes 100% chance of timing out + if (sizeof($meta) > 1) { + if($timeout >0){ + $tdiff = (integer)( $meta[1]+$timeout - time()); + if ($tdiff <= 2) { + switch($tdiff) { + case 4: + case 3: + if ((rand() & 31) == 0) { + fclose($fp); + $err = "Timeout 3"; + return $false; + } + break; + case 2: + if ((rand() & 15) == 0) { + fclose($fp); + $err = "Timeout 2"; + return $false; + } + break; + case 1: + if ((rand() & 3) == 0) { + fclose($fp); + $err = "Timeout 1"; + return $false; + } + break; + default: + fclose($fp); + $err = "Timeout 0"; + return $false; + } // switch + + } // if check flush cache + }// (timeout>0) + $ttl = $meta[1]; + } + //================================================ + // new cache format - use serialize extensively... + if ($meta[0] === '====1') { + // slurp in the data + $MAXSIZE = 128000; + + $text = fread($fp,$MAXSIZE); + if (strlen($text)) { + while ($txt = fread($fp,$MAXSIZE)) { + $text .= $txt; + } + } + fclose($fp); + $rs = unserialize($text); + if (is_object($rs)) $rs->timeCreated = $ttl; + else { + $err = "Unable to unserialize recordset"; + //echo htmlspecialchars($text),' !--END--!<p>'; + } + return $rs; + } + + $meta = false; + $meta = fgetcsv($fp, 32000, ","); + if (!$meta) { + fclose($fp); + $err = "Unexpected EOF 1"; + return $false; + } + } + + // Get Column definitions + $flds = array(); + foreach($meta as $o) { + $o2 = explode(':',$o); + if (sizeof($o2)!=3) { + $arr[] = $meta; + $flds = false; + break; + } + $fld = new ADOFieldObject(); + $fld->name = urldecode($o2[0]); + $fld->type = $o2[1]; + $fld->max_length = $o2[2]; + $flds[] = $fld; + } + } else { + fclose($fp); + $err = "Recordset had unexpected EOF 2"; + return $false; + } + + // slurp in the data + $MAXSIZE = 128000; + + $text = ''; + while ($txt = fread($fp,$MAXSIZE)) { + $text .= $txt; + } + + fclose($fp); + @$arr = unserialize($text); + //var_dump($arr); + if (!is_array($arr)) { + $err = "Recordset had unexpected EOF (in serialized recordset)"; + if (get_magic_quotes_runtime()) $err .= ". Magic Quotes Runtime should be disabled!"; + return $false; + } + $rs = new $rsclass(); + $rs->timeCreated = $ttl; + $rs->InitArrayFields($arr,$flds); + return $rs; + } + + + /** + * Save a file $filename and its $contents (normally for caching) with file locking + */ + function adodb_write_file($filename, $contents,$debug=false) + { + # http://www.php.net/bugs.php?id=9203 Bug that flock fails on Windows + # So to simulate locking, we assume that rename is an atomic operation. + # First we delete $filename, then we create a $tempfile write to it and + # rename to the desired $filename. If the rename works, then we successfully + # modified the file exclusively. + # What a stupid need - having to simulate locking. + # Risks: + # 1. $tempfile name is not unique -- very very low + # 2. unlink($filename) fails -- ok, rename will fail + # 3. adodb reads stale file because unlink fails -- ok, $rs timeout occurs + # 4. another process creates $filename between unlink() and rename() -- ok, rename() fails and cache updated + if (strncmp(PHP_OS,'WIN',3) === 0) { + // skip the decimal place + $mtime = substr(str_replace(' ','_',microtime()),2); + // getmypid() actually returns 0 on Win98 - never mind! + $tmpname = $filename.uniqid($mtime).getmypid(); + if (!($fd = @fopen($tmpname,'a'))) return false; + $ok = ftruncate($fd,0); + if (!fwrite($fd,$contents)) $ok = false; + fclose($fd); + chmod($tmpname,0644); + // the tricky moment + @unlink($filename); + if (!@rename($tmpname,$filename)) { + unlink($tmpname); + $ok = false; + } + if (!$ok) { + if ($debug) ADOConnection::outp( " Rename $tmpname ".($ok? 'ok' : 'failed')); + } + return $ok; + } + if (!($fd = @fopen($filename, 'a'))) return false; + if (flock($fd, LOCK_EX) && ftruncate($fd, 0)) { + $ok = fwrite( $fd, $contents ); + fclose($fd); + chmod($filename,0644); + }else { + fclose($fd); + if ($debug)ADOConnection::outp( " Failed acquiring lock for $filename<br>\n"); + $ok = false; + } + + return $ok; + } +?>
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