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Code Issues Releases Wiki Activity

REGEXP optimizations

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This commit is contained in:
David Grudl
2010-05-16 22:40:39 +02:00
parent 553f7da5f9
commit 27930611de
1 changed files with 5 additions and 5 deletions
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10
dibi/libs/DibiTranslator.php
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@@ -107,7 +107,7 @@ final class DibiTranslator extends DibiObject
} else { } else {
$sql[] = substr($arg, 0, $toSkip) $sql[] = substr($arg, 0, $toSkip)
/* /*
preg_replace_callback('/ . preg_replace_callback('/
(?=[`[\'":%?]) ## speed-up (?=[`[\'":%?]) ## speed-up
(?: (?:
`(.+?)`| ## 1) `identifier` `(.+?)`| ## 1) `identifier`
@@ -115,8 +115,8 @@ final class DibiTranslator extends DibiObject
(\')((?:\'\'|[^\'])*)\'| ## 3,4) 'string' (\')((?:\'\'|[^\'])*)\'| ## 3,4) 'string'
(")((?:""|[^"])*)"| ## 5,6) "string" (")((?:""|[^"])*)"| ## 5,6) "string"
(\'|")| ## 7) lone quote (\'|")| ## 7) lone quote
:(\S*?:)([a-zA-Z0-9._]?)| ## 8,9) substitution :(\S*?:)([a-zA-Z0-9._]?)| ## 8,9) :substitution:
%([a-zA-Z]{1,4})(?![a-zA-Z]) ## 10) modifier %([a-zA-Z]{1,4})(?![a-zA-Z])|## 10) modifier
(\?) ## 11) placeholder (\?) ## 11) placeholder
)/xs', )/xs',
*/ // note: this can change $this->args & $this->cursor & ... */ // note: this can change $this->args & $this->cursor & ...
@@ -344,7 +344,7 @@ final class DibiTranslator extends DibiObject
case 'i': // signed int case 'i': // signed int
case 'u': // unsigned int, ignored case 'u': // unsigned int, ignored
// support for long numbers - keep them unchanged // support for long numbers - keep them unchanged
if (is_string($value) && preg_match('#[+-]?\d+(e\d+)?$#A', $value)) { if (is_string($value) && preg_match('#[+-]?\d++(e\d+)?$#A', $value)) {
return $value; return $value;
} else { } else {
return $value === NULL ? 'NULL' : (string) (int) ($value + 0); return $value === NULL ? 'NULL' : (string) (int) ($value + 0);
@@ -568,7 +568,7 @@ final class DibiTranslator extends DibiObject
return '*'; return '*';
} elseif (strpos($value, ':') !== FALSE) { // provide substitution } elseif (strpos($value, ':') !== FALSE) { // provide substitution
$value = preg_replace_callback('#:(.*):#U', array(__CLASS__, 'subCb'), $value); $value = preg_replace_callback('#:([^:\s]*):#', array(__CLASS__, 'subCb'), $value);
} }
return $this->driver->escape($value, dibi::IDENTIFIER); return $this->driver->escape($value, dibi::IDENTIFIER);