* Re-implementations of newer functions or functions in non-standard
* PHP extensions may be included here.
*/
+
+# iconv support is not in the default configuration and so may not be present.
+# Assume will only ever use utf-8 and iso-8859-1.
+# This will *not* work in all circumstances.
+function fallback_iconv( $from, $to, $string ) {
+ if ( substr( $to, -8 ) == '//IGNORE' ) {
+ $to = substr( $to, 0, strlen( $to ) - 8 );
+ }
+ if( strcasecmp( $from, $to ) == 0 ) {
+ return $string;
+ }
+ if( strcasecmp( $from, 'utf-8' ) == 0 ) {
+ return utf8_decode( $string );
+ }
+ if( strcasecmp( $to, 'utf-8' ) == 0 ) {
+ return utf8_encode( $string );
+ }
+ return $string;
+}
+
if( !function_exists( 'iconv' ) ) {
- # iconv support is not in the default configuration and so may not be present.
- # Assume will only ever use utf-8 and iso-8859-1.
- # This will *not* work in all circumstances.
function iconv( $from, $to, $string ) {
- if ( substr( $to, -8 ) == '//IGNORE' ) {
- $to = substr( $to, 0, strlen( $to ) - 8 );
- }
- if( strcasecmp( $from, $to ) == 0 ) {
- return $string;
- }
- if( strcasecmp( $from, 'utf-8' ) == 0 ) {
- return utf8_decode( $string );
- }
- if( strcasecmp( $to, 'utf-8' ) == 0 ) {
- return utf8_encode( $string );
- }
- return $string;
+ return fallback_iconv( $from, $to, $string )
}
}
-if ( !function_exists( 'mb_substr' ) ) {
- /**
- * Fallback implementation for mb_substr, hardcoded to UTF-8.
- * Attempts to be at least _moderately_ efficient; best optimized
- * for relatively small offset and count values -- about 5x slower
- * than native mb_string in my testing.
- *
- * Larger offsets are still fairly efficient for Latin text, but
- * can be up to 100x slower than native if the text is heavily
- * multibyte and we have to slog through a few hundred kb.
- */
- function mb_substr( $str, $start, $count='end' ) {
- if( $start != 0 ) {
- $split = mb_substr_split_unicode( $str, intval( $start ) );
- $str = substr( $str, $split );
- }
- if( $count !== 'end' ) {
- $split = mb_substr_split_unicode( $str, intval( $count ) );
- $str = substr( $str, 0, $split );
- }
- return $str;
+
+/**
+ * Fallback implementation for mb_substr, hardcoded to UTF-8.
+ * Attempts to be at least _moderately_ efficient; best optimized
+ * for relatively small offset and count values -- about 5x slower
+ * than native mb_string in my testing.
+ *
+ * Larger offsets are still fairly efficient for Latin text, but
+ * can be up to 100x slower than native if the text is heavily
+ * multibyte and we have to slog through a few hundred kb.
+ */
+function fallback_mb_substr( $str, $start, $count='end' ) {
+ if( $start != 0 ) {
+ $split = fallback_mb_substr_split_unicode( $str, intval( $start ) );
+ $str = substr( $str, $split );
}
- function mb_substr_split_unicode( $str, $splitPos ) {
- if( $splitPos == 0 ) {
- return 0;
- }
+ if( $count !== 'end' ) {
+ $split = fallback_mb_substr_split_unicode( $str, intval( $count ) );
+ $str = substr( $str, 0, $split );
+ }
- $byteLen = strlen( $str );
+ return $str;
+}
- if( $splitPos > 0 ) {
- if( $splitPos > 256 ) {
- // Optimize large string offsets by skipping ahead N bytes.
- // This will cut out most of our slow time on Latin-based text,
- // and 1/2 to 1/3 on East European and Asian scripts.
- $bytePos = $splitPos;
- while ( $bytePos < $byteLen && $str{$bytePos} >= "\x80" && $str{$bytePos} < "\xc0" ) {
- ++$bytePos;
- }
- $charPos = mb_strlen( substr( $str, 0, $bytePos ) );
- } else {
- $charPos = 0;
- $bytePos = 0;
- }
+function fallback_mb_substr_split_unicode( $str, $splitPos ) {
+ if( $splitPos == 0 ) {
+ return 0;
+ }
+
+ $byteLen = strlen( $str );
- while( $charPos++ < $splitPos ) {
+ if( $splitPos > 0 ) {
+ if( $splitPos > 256 ) {
+ // Optimize large string offsets by skipping ahead N bytes.
+ // This will cut out most of our slow time on Latin-based text,
+ // and 1/2 to 1/3 on East European and Asian scripts.
+ $bytePos = $splitPos;
+ while ( $bytePos < $byteLen && $str{$bytePos} >= "\x80" && $str{$bytePos} < "\xc0" ) {
++$bytePos;
- // Move past any tail bytes
- while ( $bytePos < $byteLen && $str{$bytePos} >= "\x80" && $str{$bytePos} < "\xc0" ) {
- ++$bytePos;
- }
}
+ $charPos = mb_strlen( substr( $str, 0, $bytePos ) );
} else {
- $splitPosX = $splitPos + 1;
- $charPos = 0; // relative to end of string; we don't care about the actual char position here
- $bytePos = $byteLen;
- while( $bytePos > 0 && $charPos-- >= $splitPosX ) {
+ $charPos = 0;
+ $bytePos = 0;
+ }
+
+ while( $charPos++ < $splitPos ) {
+ ++$bytePos;
+ // Move past any tail bytes
+ while ( $bytePos < $byteLen && $str{$bytePos} >= "\x80" && $str{$bytePos} < "\xc0" ) {
+ ++$bytePos;
+ }
+ }
+ } else {
+ $splitPosX = $splitPos + 1;
+ $charPos = 0; // relative to end of string; we don't care about the actual char position here
+ $bytePos = $byteLen;
+ while( $bytePos > 0 && $charPos-- >= $splitPosX ) {
+ --$bytePos;
+ // Move past any tail bytes
+ while ( $bytePos > 0 && $str{$bytePos} >= "\x80" && $str{$bytePos} < "\xc0" ) {
--$bytePos;
- // Move past any tail bytes
- while ( $bytePos > 0 && $str{$bytePos} >= "\x80" && $str{$bytePos} < "\xc0" ) {
- --$bytePos;
- }
}
}
+ }
- return $bytePos;
+ return $bytePos;
+}
+
+if ( !function_exists( 'mb_substr' ) ) {
+ function mb_substr( $str, $start, $count='end' ) {
+ return fallback_mb_substr( $str, $start, $count )
}
+
+ function mb_substr_split_unicode( $str, $splitPos ) {
+ return fallback_mb_substr_split_unicode( $str, $splitPos );
+ }
+}
+
+
+
+/**
+ * Fallback implementation of mb_strlen, hardcoded to UTF-8.
+ * @param string $str
+ * @param string $enc optional encoding; ignored
+ * @return int
+ */
+function fallback_mb_strlen( $str, $enc = '' ) {
+ $counts = count_chars( $str );
+ $total = 0;
+
+ // Count ASCII bytes
+ for( $i = 0; $i < 0x80; $i++ ) {
+ $total += $counts[$i];
+ }
+
+ // Count multibyte sequence heads
+ for( $i = 0xc0; $i < 0xff; $i++ ) {
+ $total += $counts[$i];
+ }
+ return $total;
}
if ( !function_exists( 'mb_strlen' ) ) {
- /**
- * Fallback implementation of mb_strlen, hardcoded to UTF-8.
- * @param string $str
- * @param string $enc optional encoding; ignored
- * @return int
- */
function mb_strlen( $str, $enc = '' ) {
- $counts = count_chars( $str );
- $total = 0;
+ return fallback_mb_strlen( $str, $enc );
+ }
+}
- // Count ASCII bytes
- for( $i = 0; $i < 0x80; $i++ ) {
- $total += $counts[$i];
- }
- // Count multibyte sequence heads
- for( $i = 0xc0; $i < 0xff; $i++ ) {
- $total += $counts[$i];
- }
- return $total;
+
+/**
+ * Fallback implementation of mb_strpos, hardcoded to UTF-8.
+ * @param $haystack String
+ * @param $needle String
+ * @param $offset String: optional start position
+ * @param $encoding String: optional encoding; ignored
+ * @return int
+ */
+function fallback_mb_strpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
+ $needle = preg_quote( $needle, '/' );
+
+ $ar = array();
+ preg_match( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
+
+ if( isset( $ar[0][1] ) ) {
+ return $ar[0][1];
+ } else {
+ return false;
}
}
-
if( !function_exists( 'mb_strpos' ) ) {
- /**
- * Fallback implementation of mb_strpos, hardcoded to UTF-8.
- * @param $haystack String
- * @param $needle String
- * @param $offset String: optional start position
- * @param $encoding String: optional encoding; ignored
- * @return int
- */
+
function mb_strpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
- $needle = preg_quote( $needle, '/' );
+ return fallback_mb_strpos( $haystack, $needle, $offset, $encoding );
+ }
+
+}
- $ar = array();
- preg_match( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
- if( isset( $ar[0][1] ) ) {
- return $ar[0][1];
- } else {
- return false;
- }
+
+/**
+ * Fallback implementation of mb_strrpos, hardcoded to UTF-8.
+ * @param $haystack String
+ * @param $needle String
+ * @param $offset String: optional start position
+ * @param $encoding String: optional encoding; ignored
+ * @return int
+ */
+function fallback_mb_strrpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
+ $needle = preg_quote( $needle, '/' );
+
+ $ar = array();
+ preg_match_all( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
+
+ if( isset( $ar[0] ) && count( $ar[0] ) > 0 &&
+ isset( $ar[0][count( $ar[0] ) - 1][1] ) ) {
+ return $ar[0][count( $ar[0] ) - 1][1];
+ } else {
+ return false;
}
}
if( !function_exists( 'mb_strrpos' ) ) {
- /**
- * Fallback implementation of mb_strrpos, hardcoded to UTF-8.
- * @param $haystack String
- * @param $needle String
- * @param $offset String: optional start position
- * @param $encoding String: optional encoding; ignored
- * @return int
- */
function mb_strrpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
- $needle = preg_quote( $needle, '/' );
-
- $ar = array();
- preg_match_all( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
-
- if( isset( $ar[0] ) && count( $ar[0] ) > 0 &&
- isset( $ar[0][count( $ar[0] ) - 1][1] ) ) {
- return $ar[0][count( $ar[0] ) - 1][1];
- } else {
- return false;
- }
+ return fallback_mb_strrpos( $haystack, $needle, $offset, $encoding );
}
}
+
// Support for Wietse Venema's taint feature
if ( !function_exists( 'istainted' ) ) {
function istainted( $var ) {
/// @endcond
+
/**
* Like array_diff( $a, $b ) except that it works with two-dimensional arrays.
*/
dépôts / lhc / web / wiklou.git / commitdiff