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[3.1.0] Add multi-parse capability for StringHash

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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1624 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2008-03-23 00:02:37 +00:00
parent b8f00ace1a
commit 848795d4a0
3 changed files with 89 additions and 10 deletions
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44
library/HTMLPurifier/StringHashParser.php
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@ -21,21 +21,60 @@
*
* We use this as an easy to use file-format for configuration schema
* files, but the class itself is usage agnostic.
*
* You can use ---- to forcibly terminate parsing of a single string-hash;
* this marker is used in multi string-hashes to delimit boundaries.
*/
class HTMLPurifier_StringHashParser
{
public $default = 'ID';
/**
* Parses a file that contains a single string-hash.
*/
public function parseFile($file) {
if (!file_exists($file)) return false;
$fh = fopen($file, 'r');
if (!$fh) return false;
$ret = $this->parseHandle($fh);
fclose($fh);
return $ret;
}
/**
* Parses a file that contains multiple string-hashes delimited by '----'
*/
public function parseMultiFile($file) {
if (!file_exists($file)) return false;
$ret = array();
$fh = fopen($file, 'r');
if (!$fh) return false;
while (!feof($fh)) {
$ret[] = $this->parseHandle($fh);
}
fclose($fh);
return $ret;
}
/**
* Internal parser that acepts a file handle.
* @note While it's possible to simulate in-memory parsing by using
* custom stream wrappers, if such a use-case arises we should
* factor out the file handle into its own class.
* @param $fh File handle with pointer at start of valid string-hash
* block.
*/
protected function parseHandle($fh) {
$state = false;
$single = false;
$ret = array();
while (($line = fgets($fh)) !== false) {
do {
$line = fgets($fh);
if ($line === false) break;
$line = rtrim($line, "\n\r");
if (!$state && $line === '') continue;
if ($line === '----') break;
if (strncmp('--', $line, 2) === 0) {
// Multiline declaration
$state = trim($line, '- ');
@ -58,8 +97,7 @@ class HTMLPurifier_StringHashParser
if (!isset($ret[$state])) $ret[$state] = '';
$ret[$state] .= "$line\n";
}
}
fclose($fh);
} while (!feof($fh));
return $ret;
}