static $needle;
if ( is_null( $s ) ) {
$needle = null;
- return;
+ return '';
}
if ( is_null( $needle ) ) {
* like "subdir/foo.html", etc.
*
* @param $url String: either fully-qualified or a local path + query
- * @param $defaultProto Mixed: one of the PROTO_* constants. Determines the protocol to use if $url or $wgServer is protocol-relative
- * @return string Fully-qualified URL
+ * @param $defaultProto Mixed: one of the PROTO_* constants. Determines the
+ * protocol to use if $url or $wgServer is
+ * protocol-relative
+ * @return string Fully-qualified URL, current-path-relative URL or false if
+ * no valid URL can be constructed
*/
function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT ) {
global $wgServer, $wgCanonicalServer, $wgInternalServer;
$defaultProtoWithoutSlashes = substr( $defaultProto, 0, -2 );
- if( substr( $url, 0, 2 ) == '//' ) {
- return $defaultProtoWithoutSlashes . $url;
- } elseif( substr( $url, 0, 1 ) == '/' ) {
+ if ( substr( $url, 0, 2 ) == '//' ) {
+ $url = $defaultProtoWithoutSlashes . $url;
+ } elseif ( substr( $url, 0, 1 ) == '/' ) {
// If $serverUrl is protocol-relative, prepend $defaultProtoWithoutSlashes, otherwise leave it alone
- return ( $serverHasProto ? '' : $defaultProtoWithoutSlashes ) . $serverUrl . $url;
- } else {
+ $url = ( $serverHasProto ? '' : $defaultProtoWithoutSlashes ) . $serverUrl . $url;
+ }
+
+ $bits = wfParseUrl( $url );
+ if ( $bits && isset( $bits['path'] ) ) {
+ $bits['path'] = wfRemoveDotSegments( $bits['path'] );
+ return wfAssembleUrl( $bits );
+ } elseif ( $bits ) {
+ # No path to expand
return $url;
+ } elseif ( substr( $url, 0, 1 ) != '/' ) {
+ # URL is a relative path
+ return wfRemoveDotSegments( $url );
+ }
+
+ # Expanded URL is not valid.
+ return false;
+}
+
+/**
+ * This function will reassemble a URL parsed with wfParseURL. This is useful
+ * if you need to edit part of a URL and put it back together.
+ *
+ * This is the basic structure used (brackets contain keys for $urlParts):
+ * [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment]
+ *
+ * @todo Need to integrate this into wfExpandUrl (bug 32168)
+ *
+ * @param $urlParts Array URL parts, as output from wfParseUrl
+ * @return string URL assembled from its component parts
+ */
+function wfAssembleUrl( $urlParts ) {
+ $result = '';
+
+ if ( isset( $urlParts['delimiter'] ) ) {
+ if ( isset( $urlParts['scheme'] ) ) {
+ $result .= $urlParts['scheme'];
+ }
+
+ $result .= $urlParts['delimiter'];
+ }
+
+ if ( isset( $urlParts['host'] ) ) {
+ if ( isset( $urlParts['user'] ) ) {
+ $result .= $urlParts['user'];
+ if ( isset( $urlParts['pass'] ) ) {
+ $result .= ':' . $urlParts['pass'];
+ }
+ $result .= '@';
+ }
+
+ $result .= $urlParts['host'];
+
+ if ( isset( $urlParts['port'] ) ) {
+ $result .= ':' . $urlParts['port'];
+ }
+ }
+
+ if ( isset( $urlParts['path'] ) ) {
+ $result .= $urlParts['path'];
+ }
+
+ if ( isset( $urlParts['query'] ) ) {
+ $result .= '?' . $urlParts['query'];
+ }
+
+ if ( isset( $urlParts['fragment'] ) ) {
+ $result .= '#' . $urlParts['fragment'];
+ }
+
+ return $result;
+}
+
+/**
+ * Remove all dot-segments in the provided URL path. For example,
+ * '/a/./b/../c/' becomes '/a/c/'. For details on the algorithm, please see
+ * RFC3986 section 5.2.4.
+ *
+ * @todo Need to integrate this into wfExpandUrl (bug 32168)
+ *
+ * @param $urlPath String URL path, potentially containing dot-segments
+ * @return string URL path with all dot-segments removed
+ */
+function wfRemoveDotSegments( $urlPath ) {
+ $output = '';
+
+ while ( $urlPath ) {
+ $matches = null;
+ if ( preg_match('%^\.\.?/%', $urlPath, $matches) ) {
+ # Step A, remove leading "../" or "./"
+ $urlPath = substr( $urlPath, strlen( $matches[0] ) );
+ } elseif ( preg_match( '%^/\.(/|$)%', $urlPath, $matches ) ) {
+ # Step B, replace leading "/.$" or "/./" with "/"
+ $start = strlen( $matches[0] );
+ $urlPath = '/' . substr( $urlPath, $start );
+ } elseif ( preg_match( '%^/\.\.(/|$)%', $urlPath, $matches ) ) {
+ # Step C, replace leading "/..$" or "/../" with "/" and
+ # remove last path component in output
+ $start = strlen( $matches[0] );
+ $urlPath = '/' . substr( $urlPath, $start );
+ $output = preg_replace('%(^|/)[^/]*$%', '', $output);
+ } elseif ( preg_match( '%^\.\.?$%', $urlPath, $matches ) ) {
+ # Step D, remove "^..$" or "^.$"
+ $urlPath = '';
+ } else {
+ # Step E, move leading path segment to output
+ preg_match( '%^/?[^/]*%', $urlPath, $matches );
+ $urlPath = substr( $urlPath, strlen( $matches[0] ) );
+ $output .= $matches[0];
+ }
}
+
+ return $output;
}
/**
* Returns a regular expression of url protocols
*
* @param $includeProtocolRelative bool If false, remove '//' from the returned protocol list.
- * DO NOT USE this directy, use wfUrlProtocolsWithoutProtRel() instead
+ * DO NOT USE this directly, use wfUrlProtocolsWithoutProtRel() instead
* @return String
*/
function wfUrlProtocols( $includeProtocolRelative = true ) {
* Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if
* you need a regex that matches all URL protocols but does not match protocol-
* relative URLs
+ * @return String
*/
function wfUrlProtocolsWithoutProtRel() {
return wfUrlProtocols( false );
}
/**
- * Make a URL index, appropriate for the el_index field of externallinks.
+ * Make URL indexes, appropriate for the el_index field of externallinks.
*
* @param $url String
- * @return String
+ * @return array
*/
-function wfMakeUrlIndex( $url ) {
+function wfMakeUrlIndexes( $url ) {
$bits = wfParseUrl( $url );
// Reverse the labels in the hostname, convert to lower case
if ( isset( $bits['fragment'] ) ) {
$index .= '#' . $bits['fragment'];
}
- return $index;
+
+ if ( $prot == '' ) {
+ return array( "http:$index", "https:$index" );
+ } else {
+ return array( $index );
+ }
}
/**
if ( $wgDebugLogFile != '' && !$wgProfileOnly ) {
# Strip unprintables; they can switch terminal modes when binary data
# gets dumped, which is pretty annoying.
- $text = preg_replace( '![\x00-\x08\x0b\x0c\x0e-\x1f]!', ' ', $text );
+ $text = preg_replace( '![\x00-\x08\x0b\x0c\x0e-\x1a\x1c-\x1f]!', ' ', $text );
$text = $wgDebugLogPrefix . $text;
wfErrorLog( $text, $wgDebugLogFile );
}
$text = preg_replace( '/^/m', $prefix . ' ', $text );
// Limit to 64KB
- if ( strlen( $text ) > 65534 ) {
- $text = substr( $text, 0, 65534 );
+ if ( strlen( $text ) > 65506 ) {
+ $text = substr( $text, 0, 65506 );
}
if ( substr( $text, -1 ) != "\n" ) {
$text .= "\n";
}
- } elseif ( strlen( $text ) > 65535 ) {
- $text = substr( $text, 0, 65535 );
+ } elseif ( strlen( $text ) > 65507 ) {
+ $text = substr( $text, 0, 65507 );
}
$sock = socket_create( $domain, SOCK_DGRAM, SOL_UDP );
return;
}
- $len = strlen( $text );
- $maxLen = socket_get_option( $sock, SOL_SOCKET, SO_SNDBUF );
-
- if ( $len > $maxLen ) {
- $len = $maxLen - 1;
- }
- socket_sendto( $sock, $text, $len, 0, $host, $port );
+ socket_sendto( $sock, $text, strlen( $text ), 0, $host, $port );
socket_close( $sock );
} else {
wfSuppressWarnings();
return (bool)$wgReadOnly;
}
+/**
+ * @return bool
+ */
function wfReadOnlyReason() {
global $wgReadOnly;
wfReadOnly();
* Throw a debugging exception. This function previously once exited the process,
* but now throws an exception instead, with similar results.
*
- * @param $msg String: message shown when dieing.
+ * @param $msg String: message shown when dying.
*/
function wfDebugDieBacktrace( $msg = '' ) {
throw new MWException( $msg );
* @param $query String: optional URL query parameter string
* @param $atend Bool: optional param for specified if this is the last page
* @return String
+ * @deprecated in 1.19; use Language::viewPrevNext() instead
*/
function wfViewPrevNext( $offset, $limit, $link, $query = '', $atend = false ) {
global $wgLang;
- $fmtLimit = $wgLang->formatNum( $limit );
- // @todo FIXME: Why on earth this needs one message for the text and another one for tooltip?
- # Get prev/next link display text
- $prev = wfMsgExt( 'prevn', array( 'parsemag', 'escape' ), $fmtLimit );
- $next = wfMsgExt( 'nextn', array( 'parsemag', 'escape' ), $fmtLimit );
- # Get prev/next link title text
- $pTitle = wfMsgExt( 'prevn-title', array( 'parsemag', 'escape' ), $fmtLimit );
- $nTitle = wfMsgExt( 'nextn-title', array( 'parsemag', 'escape' ), $fmtLimit );
- # Fetch the title object
+
+ $query = wfCgiToArray( $query );
+
if( is_object( $link ) ) {
- $title =& $link;
+ $title = $link;
} else {
$title = Title::newFromText( $link );
if( is_null( $title ) ) {
return false;
}
}
- # Make 'previous' link
- if( 0 != $offset ) {
- $po = $offset - $limit;
- $po = max( $po, 0 );
- $q = "limit={$limit}&offset={$po}";
- if( $query != '' ) {
- $q .= '&' . $query;
- }
- $plink = '<a href="' . $title->escapeLocalURL( $q ) . "\" title=\"{$pTitle}\" class=\"mw-prevlink\">{$prev}</a>";
- } else {
- $plink = $prev;
- }
- # Make 'next' link
- $no = $offset + $limit;
- $q = "limit={$limit}&offset={$no}";
- if( $query != '' ) {
- $q .= '&' . $query;
- }
- if( $atend ) {
- $nlink = $next;
- } else {
- $nlink = '<a href="' . $title->escapeLocalURL( $q ) . "\" title=\"{$nTitle}\" class=\"mw-nextlink\">{$next}</a>";
- }
- # Make links to set number of items per page
- $nums = $wgLang->pipeList( array(
- wfNumLink( $offset, 20, $title, $query ),
- wfNumLink( $offset, 50, $title, $query ),
- wfNumLink( $offset, 100, $title, $query ),
- wfNumLink( $offset, 250, $title, $query ),
- wfNumLink( $offset, 500, $title, $query )
- ) );
- return wfMsgHtml( 'viewprevnext', $plink, $nlink, $nums );
+
+ return $wgLang->viewPrevNext( $title, $offset, $limit, $query, $atend );
}
/**
- * Generate links for (20|50|100...) items-per-page links
+ * Make a list item, used by various special pages
*
- * @param $offset String
- * @param $limit Integer
- * @param $title Title
- * @param $query String: optional URL query parameter string
+ * @param $page String Page link
+ * @param $details String Text between brackets
+ * @param $oppositedm Boolean Add the direction mark opposite to your
+ * language, to display text properly
+ * @return String
+ * @deprecated since 1.19; use Language::specialList() instead
*/
-function wfNumLink( $offset, $limit, $title, $query = '' ) {
+function wfSpecialList( $page, $details, $oppositedm = true ) {
global $wgLang;
- if( $query == '' ) {
- $q = '';
- } else {
- $q = $query.'&';
- }
- $q .= "limit={$limit}&offset={$offset}";
- $fmtLimit = $wgLang->formatNum( $limit );
- $lTitle = wfMsgExt( 'shown-title', array( 'parsemag', 'escape' ), $limit );
- $s = '<a href="' . $title->escapeLocalURL( $q ) . "\" title=\"{$lTitle}\" class=\"mw-numlink\">{$fmtLimit}</a>";
- return $s;
+ return $wgLang->specialList( $page, $details, $oppositedm );
}
/**
$result = false;
return $result;
}
- wfDebug( " accepts gzip\n" );
+ wfDebug( "wfClientAcceptsGzip: client accepts gzip.\n" );
$result = true;
}
}
$dest |= $bit;
} else {
$dest &= ~$bit;
- }
- }
- return $temp;
-}
-
-/**
- * Windows-compatible version of escapeshellarg()
- * Windows doesn't recognise single-quotes in the shell, but the escapeshellarg()
- * function puts single quotes in regardless of OS.
- *
- * Also fixes the locale problems on Linux in PHP 5.2.6+ (bug backported to
- * earlier distro releases of PHP)
- *
- * @param varargs
- * @return String
- */
-function wfEscapeShellArg( ) {
- wfInitShellLocale();
-
- $args = func_get_args();
- $first = true;
- $retVal = '';
- foreach ( $args as $arg ) {
- if ( !$first ) {
- $retVal .= ' ';
- } else {
- $first = false;
- }
-
- if ( wfIsWindows() ) {
- // Escaping for an MSVC-style command line parser and CMD.EXE
- // Refs:
- // * http://web.archive.org/web/20020708081031/http://mailman.lyra.org/pipermail/scite-interest/2002-March/000436.html
- // * http://technet.microsoft.com/en-us/library/cc723564.aspx
- // * Bug #13518
- // * CR r63214
- // Double the backslashes before any double quotes. Escape the double quotes.
- $tokens = preg_split( '/(\\\\*")/', $arg, -1, PREG_SPLIT_DELIM_CAPTURE );
- $arg = '';
- $iteration = 0;
- foreach ( $tokens as $token ) {
- if ( $iteration % 2 == 1 ) {
- // Delimiter, a double quote preceded by zero or more slashes
- $arg .= str_replace( '\\', '\\\\', substr( $token, 0, -1 ) ) . '\\"';
- } elseif ( $iteration % 4 == 2 ) {
- // ^ in $token will be outside quotes, need to be escaped
- $arg .= str_replace( '^', '^^', $token );
- } else { // $iteration % 4 == 0
- // ^ in $token will appear inside double quotes, so leave as is
- $arg .= $token;
- }
- $iteration++;
- }
- // Double the backslashes before the end of the string, because
- // we will soon add a quote
- $m = array();
- if ( preg_match( '/^(.*?)(\\\\+)$/', $arg, $m ) ) {
- $arg = $m[1] . str_replace( '\\', '\\\\', $m[2] );
- }
-
- // Add surrounding quotes
- $retVal .= '"' . $arg . '"';
- } else {
- $retVal .= escapeshellarg( $arg );
- }
- }
- return $retVal;
-}
-
-/**
- * wfMerge attempts to merge differences between three texts.
- * Returns true for a clean merge and false for failure or a conflict.
- *
- * @param $old String
- * @param $mine String
- * @param $yours String
- * @param $result String
- * @return Bool
- */
-function wfMerge( $old, $mine, $yours, &$result ) {
- global $wgDiff3;
-
- # This check may also protect against code injection in
- # case of broken installations.
- wfSuppressWarnings();
- $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
- wfRestoreWarnings();
-
- if( !$haveDiff3 ) {
- wfDebug( "diff3 not found\n" );
- return false;
- }
-
- # Make temporary files
- $td = wfTempDir();
- $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
- $mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' );
- $yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' );
-
- fwrite( $oldtextFile, $old );
- fclose( $oldtextFile );
- fwrite( $mytextFile, $mine );
- fclose( $mytextFile );
- fwrite( $yourtextFile, $yours );
- fclose( $yourtextFile );
-
- # Check for a conflict
- $cmd = $wgDiff3 . ' -a --overlap-only ' .
- wfEscapeShellArg( $mytextName ) . ' ' .
- wfEscapeShellArg( $oldtextName ) . ' ' .
- wfEscapeShellArg( $yourtextName );
- $handle = popen( $cmd, 'r' );
-
- if( fgets( $handle, 1024 ) ) {
- $conflict = true;
- } else {
- $conflict = false;
- }
- pclose( $handle );
-
- # Merge differences
- $cmd = $wgDiff3 . ' -a -e --merge ' .
- wfEscapeShellArg( $mytextName, $oldtextName, $yourtextName );
- $handle = popen( $cmd, 'r' );
- $result = '';
- do {
- $data = fread( $handle, 8192 );
- if ( strlen( $data ) == 0 ) {
- break;
- }
- $result .= $data;
- } while ( true );
- pclose( $handle );
- unlink( $mytextName );
- unlink( $oldtextName );
- unlink( $yourtextName );
-
- if ( $result === '' && $old !== '' && !$conflict ) {
- wfDebug( "Unexpected null result from diff3. Command: $cmd\n" );
- $conflict = true;
- }
- return !$conflict;
-}
-
-/**
- * Returns unified plain-text diff of two texts.
- * Useful for machine processing of diffs.
- *
- * @param $before String: the text before the changes.
- * @param $after String: the text after the changes.
- * @param $params String: command-line options for the diff command.
- * @return String: unified diff of $before and $after
- */
-function wfDiff( $before, $after, $params = '-u' ) {
- if ( $before == $after ) {
- return '';
- }
-
- global $wgDiff;
- wfSuppressWarnings();
- $haveDiff = $wgDiff && file_exists( $wgDiff );
- wfRestoreWarnings();
-
- # This check may also protect against code injection in
- # case of broken installations.
- if( !$haveDiff ) {
- wfDebug( "diff executable not found\n" );
- $diffs = new Diff( explode( "\n", $before ), explode( "\n", $after ) );
- $format = new UnifiedDiffFormatter();
- return $format->format( $diffs );
- }
-
- # Make temporary files
- $td = wfTempDir();
- $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
- $newtextFile = fopen( $newtextName = tempnam( $td, 'merge-your-' ), 'w' );
-
- fwrite( $oldtextFile, $before );
- fclose( $oldtextFile );
- fwrite( $newtextFile, $after );
- fclose( $newtextFile );
-
- // Get the diff of the two files
- $cmd = "$wgDiff " . $params . ' ' . wfEscapeShellArg( $oldtextName, $newtextName );
-
- $h = popen( $cmd, 'r' );
-
- $diff = '';
-
- do {
- $data = fread( $h, 8192 );
- if ( strlen( $data ) == 0 ) {
- break;
- }
- $diff .= $data;
- } while ( true );
-
- // Clean up
- pclose( $h );
- unlink( $oldtextName );
- unlink( $newtextName );
-
- // Kill the --- and +++ lines. They're not useful.
- $diff_lines = explode( "\n", $diff );
- if ( strpos( $diff_lines[0], '---' ) === 0 ) {
- unset( $diff_lines[0] );
- }
- if ( strpos( $diff_lines[1], '+++' ) === 0 ) {
- unset( $diff_lines[1] );
+ }
}
-
- $diff = implode( "\n", $diff_lines );
-
- return $diff;
+ return $temp;
}
/**
global $wgDirectoryMode;
if ( !is_null( $caller ) ) {
- wfDebug( "$caller: called wfMkdirParents($dir)" );
+ wfDebug( "$caller: called wfMkdirParents($dir)\n" );
}
if( strval( $dir ) === '' || file_exists( $dir ) ) {
return $func( $str, $needle ) !== false;
}
-/**
- * Make a list item, used by various special pages
- *
- * @param $page String Page link
- * @param $details String Text between brackets
- * @param $oppositedm Boolean Add the direction mark opposite to your
- * language, to display text properly
- * @return String
- */
-function wfSpecialList( $page, $details, $oppositedm = true ) {
- global $wgLang;
- $dirmark = ( $oppositedm ? $wgLang->getDirMark( true ) : '' ) .
- $wgLang->getDirMark();
- $details = $details ? $dirmark . " ($details)" : '';
- return $page . $details;
-}
-
/**
* Safety wrapper around ini_get() for boolean settings.
* The values returned from ini_get() are pre-normalized for settings
return extension_loaded( $extension );
}
+/**
+ * Windows-compatible version of escapeshellarg()
+ * Windows doesn't recognise single-quotes in the shell, but the escapeshellarg()
+ * function puts single quotes in regardless of OS.
+ *
+ * Also fixes the locale problems on Linux in PHP 5.2.6+ (bug backported to
+ * earlier distro releases of PHP)
+ *
+ * @param varargs
+ * @return String
+ */
+function wfEscapeShellArg( ) {
+ wfInitShellLocale();
+
+ $args = func_get_args();
+ $first = true;
+ $retVal = '';
+ foreach ( $args as $arg ) {
+ if ( !$first ) {
+ $retVal .= ' ';
+ } else {
+ $first = false;
+ }
+
+ if ( wfIsWindows() ) {
+ // Escaping for an MSVC-style command line parser and CMD.EXE
+ // Refs:
+ // * http://web.archive.org/web/20020708081031/http://mailman.lyra.org/pipermail/scite-interest/2002-March/000436.html
+ // * http://technet.microsoft.com/en-us/library/cc723564.aspx
+ // * Bug #13518
+ // * CR r63214
+ // Double the backslashes before any double quotes. Escape the double quotes.
+ $tokens = preg_split( '/(\\\\*")/', $arg, -1, PREG_SPLIT_DELIM_CAPTURE );
+ $arg = '';
+ $iteration = 0;
+ foreach ( $tokens as $token ) {
+ if ( $iteration % 2 == 1 ) {
+ // Delimiter, a double quote preceded by zero or more slashes
+ $arg .= str_replace( '\\', '\\\\', substr( $token, 0, -1 ) ) . '\\"';
+ } elseif ( $iteration % 4 == 2 ) {
+ // ^ in $token will be outside quotes, need to be escaped
+ $arg .= str_replace( '^', '^^', $token );
+ } else { // $iteration % 4 == 0
+ // ^ in $token will appear inside double quotes, so leave as is
+ $arg .= $token;
+ }
+ $iteration++;
+ }
+ // Double the backslashes before the end of the string, because
+ // we will soon add a quote
+ $m = array();
+ if ( preg_match( '/^(.*?)(\\\\+)$/', $arg, $m ) ) {
+ $arg = $m[1] . str_replace( '\\', '\\\\', $m[2] );
+ }
+
+ // Add surrounding quotes
+ $retVal .= '"' . $arg . '"';
+ } else {
+ $retVal .= escapeshellarg( $arg );
+ }
+ }
+ return $retVal;
+}
+
/**
* Execute a shell command, with time and memory limits mirrored from the PHP
* configuration if supported.
}
}
+/**
+ * Generate a shell-escaped command line string to run a maintenance script.
+ * Note that $parameters should be a flat array and an option with an argument
+ * should consist of two consecutive items in the array (do not use "--option value").
+ * @param $script string MediaWiki maintenance script path
+ * @param $parameters Array Arguments and options to the script
+ * @param $options Array Associative array of options:
+ * 'php': The path to the php executable
+ * 'wrapper': Path to a PHP wrapper to handle the maintenance script
+ * @return Array
+ */
+function wfShellMaintenanceCmd( $script, array $parameters = array(), array $options = array() ) {
+ global $wgPhpCli;
+ // Give site config file a chance to run the script in a wrapper.
+ // The caller may likely want to call wfBasename() on $script.
+ wfRunHooks( 'wfShellMaintenanceCmd', array( &$script, &$parameters, &$options ) );
+ $cmd = isset( $options['php'] ) ? array( $options['php'] ) : array( $wgPhpCli );
+ if ( isset( $options['wrapper'] ) ) {
+ $cmd[] = $options['wrapper'];
+ }
+ $cmd[] = $script;
+ // Escape each parameter for shell
+ return implode( " ", array_map( 'wfEscapeShellArg', array_merge( $cmd, $parameters ) ) );
+}
+
+/**
+ * wfMerge attempts to merge differences between three texts.
+ * Returns true for a clean merge and false for failure or a conflict.
+ *
+ * @param $old String
+ * @param $mine String
+ * @param $yours String
+ * @param $result String
+ * @return Bool
+ */
+function wfMerge( $old, $mine, $yours, &$result ) {
+ global $wgDiff3;
+
+ # This check may also protect against code injection in
+ # case of broken installations.
+ wfSuppressWarnings();
+ $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
+ wfRestoreWarnings();
+
+ if( !$haveDiff3 ) {
+ wfDebug( "diff3 not found\n" );
+ return false;
+ }
+
+ # Make temporary files
+ $td = wfTempDir();
+ $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
+ $mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' );
+ $yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' );
+
+ fwrite( $oldtextFile, $old );
+ fclose( $oldtextFile );
+ fwrite( $mytextFile, $mine );
+ fclose( $mytextFile );
+ fwrite( $yourtextFile, $yours );
+ fclose( $yourtextFile );
+
+ # Check for a conflict
+ $cmd = $wgDiff3 . ' -a --overlap-only ' .
+ wfEscapeShellArg( $mytextName ) . ' ' .
+ wfEscapeShellArg( $oldtextName ) . ' ' .
+ wfEscapeShellArg( $yourtextName );
+ $handle = popen( $cmd, 'r' );
+
+ if( fgets( $handle, 1024 ) ) {
+ $conflict = true;
+ } else {
+ $conflict = false;
+ }
+ pclose( $handle );
+
+ # Merge differences
+ $cmd = $wgDiff3 . ' -a -e --merge ' .
+ wfEscapeShellArg( $mytextName, $oldtextName, $yourtextName );
+ $handle = popen( $cmd, 'r' );
+ $result = '';
+ do {
+ $data = fread( $handle, 8192 );
+ if ( strlen( $data ) == 0 ) {
+ break;
+ }
+ $result .= $data;
+ } while ( true );
+ pclose( $handle );
+ unlink( $mytextName );
+ unlink( $oldtextName );
+ unlink( $yourtextName );
+
+ if ( $result === '' && $old !== '' && !$conflict ) {
+ wfDebug( "Unexpected null result from diff3. Command: $cmd\n" );
+ $conflict = true;
+ }
+ return !$conflict;
+}
+
+/**
+ * Returns unified plain-text diff of two texts.
+ * Useful for machine processing of diffs.
+ *
+ * @param $before String: the text before the changes.
+ * @param $after String: the text after the changes.
+ * @param $params String: command-line options for the diff command.
+ * @return String: unified diff of $before and $after
+ */
+function wfDiff( $before, $after, $params = '-u' ) {
+ if ( $before == $after ) {
+ return '';
+ }
+
+ global $wgDiff;
+ wfSuppressWarnings();
+ $haveDiff = $wgDiff && file_exists( $wgDiff );
+ wfRestoreWarnings();
+
+ # This check may also protect against code injection in
+ # case of broken installations.
+ if( !$haveDiff ) {
+ wfDebug( "diff executable not found\n" );
+ $diffs = new Diff( explode( "\n", $before ), explode( "\n", $after ) );
+ $format = new UnifiedDiffFormatter();
+ return $format->format( $diffs );
+ }
+
+ # Make temporary files
+ $td = wfTempDir();
+ $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
+ $newtextFile = fopen( $newtextName = tempnam( $td, 'merge-your-' ), 'w' );
+
+ fwrite( $oldtextFile, $before );
+ fclose( $oldtextFile );
+ fwrite( $newtextFile, $after );
+ fclose( $newtextFile );
+
+ // Get the diff of the two files
+ $cmd = "$wgDiff " . $params . ' ' . wfEscapeShellArg( $oldtextName, $newtextName );
+
+ $h = popen( $cmd, 'r' );
+
+ $diff = '';
+
+ do {
+ $data = fread( $h, 8192 );
+ if ( strlen( $data ) == 0 ) {
+ break;
+ }
+ $diff .= $data;
+ } while ( true );
+
+ // Clean up
+ pclose( $h );
+ unlink( $oldtextName );
+ unlink( $newtextName );
+
+ // Kill the --- and +++ lines. They're not useful.
+ $diff_lines = explode( "\n", $diff );
+ if ( strpos( $diff_lines[0], '---' ) === 0 ) {
+ unset( $diff_lines[0] );
+ }
+ if ( strpos( $diff_lines[1], '+++' ) === 0 ) {
+ unset( $diff_lines[1] );
+ }
+
+ $diff = implode( "\n", $diff_lines );
+
+ return $diff;
+}
+
/**
* This function works like "use VERSION" in Perl, the program will die with a
* backtrace if the current version of PHP is less than the version provided
*
* @deprecated since 1.19
* @see DeferredUpdates::doUpdate()
+ * @param $commit string
*/
function wfDoUpdates( $commit = '' ) {
DeferredUpdates::doUpdates( $commit );
*
* @param $name String
* @param $p Array: parameters
+ * @return object
* @deprecated since 1.18, warnings in 1.18, removal in 1.20
*/
function wfCreateObject( $name, $p ) {
return MWFunction::newObj( $name, $p );
}
+/**
+ * @return bool
+ */
function wfHttpOnlySafe() {
global $wgHttpOnlyBlacklist;
* Split a wiki ID into DB name and table prefix
*
* @param $wiki String
- * @param $bits String
*
* @return array
*/
* Returns a valid placeholder object if the file does not exist.
*
* @param $title Title or String
- * @return File, or null if passed an invalid Title
+ * @return File|null A File, or null if passed an invalid Title
*/
function wfLocalFile( $title ) {
return RepoGroup::singleton()->getLocalRepo()->newFile( $title );
*
* @param $maxLag Integer (deprecated)
* @param $wiki mixed Wiki identifier accepted by wfGetLB
- * @return null
*/
function wfWaitForSlaves( $maxLag = false, $wiki = false ) {
$lb = wfGetLB( $wiki );
* Count down from $n to zero on the terminal, with a one-second pause
* between showing each number. For use in command-line scripts.
* @codeCoverageIgnore
+ * @param $n int
*/
function wfCountDown( $n ) {
for ( $i = $n; $i >= 0; $i-- ) {
* See unit test for examples.
*
* @param $code String: The language code.
- * @return $langCode String: The language code which complying with BCP 47 standards.
+ * @return String: The language code which complying with BCP 47 standards.
*/
function wfBCP47( $code ) {
$codeSegment = explode( '-', $code );
function wfRunHooks( $event, $args = array() ) {
return Hooks::run( $event, $args );
}
+
+/**
+ * Wrapper around php's unpack.
+ *
+ * @param $format String: The format string (See php's docs)
+ * @param $data: A binary string of binary data
+ * @param $length integer or false: The minimun length of $data. This is to
+ * prevent reading beyond the end of $data. false to disable the check.
+ *
+ * Also be careful when using this function to read unsigned 32 bit integer
+ * because php might make it negative.
+ *
+ * @throws MWException if $data not long enough, or if unpack fails
+ * @return Associative array of the extracted data
+ */
+function wfUnpack( $format, $data, $length=false ) {
+ if ( $length !== false ) {
+ $realLen = strlen( $data );
+ if ( $realLen < $length ) {
+ throw new MWException( "Tried to use wfUnpack on a "
+ . "string of length $realLen, but needed one "
+ . "of at least length $length."
+ );
+ }
+ }
+
+ wfSuppressWarnings();
+ $result = unpack( $format, $data );
+ wfRestoreWarnings();
+
+ if ( $result === false ) {
+ // If it cannot extract the packed data.
+ throw new MWException( "unpack could not unpack binary data" );
+ }
+ return $result;
+}
dépôts / lhc / web / wiklou.git / blobdiff