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Diffstat (limited to 'buildscripts/phing/classes/phing/filters/ReplaceTokens.php')
| -rw-r--r-- | buildscripts/phing/classes/phing/filters/ReplaceTokens.php | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/buildscripts/phing/classes/phing/filters/ReplaceTokens.php b/buildscripts/phing/classes/phing/filters/ReplaceTokens.php new file mode 100644 index 00000000..999f734f --- /dev/null +++ b/buildscripts/phing/classes/phing/filters/ReplaceTokens.php @@ -0,0 +1,415 @@ +<?php + +/* + * $Id: ReplaceTokens.php,v 1.14 2005/06/16 15:09:10 hlellelid Exp $ + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This software consists of voluntary contributions made by many individuals + * and is licensed under the LGPL. For more information please see + * <http://phing.info>. +*/ + +include_once 'phing/filters/BaseParamFilterReader.php'; +include_once 'phing/types/TokenSource.php'; +include_once 'phing/filters/ChainableReader.php'; + +/* + * Replaces tokens in the original input with user-supplied values. + * + * Example: + * + * <pre><replacetokens begintoken="#" endtoken="#">; + * <token key="DATE" value="${TODAY}"/> + * </replacetokens></pre> + * + * Or: + * + * <pre><filterreader classname="phing.filters.ReplaceTokens"> + * <param type="tokenchar" name="begintoken" value="#"/> + * <param type="tokenchar" name="endtoken" value="#"/> + * <param type="token" name="DATE" value="${TODAY}"/> + * </filterreader></pre> + * + * @author <a href="mailto:yl@seasonfive.com">Yannick Lecaillez</a> + * @author hans lellelid, hans@velum.net + * @version $Revision: 1.14 $ $Date: 2005/06/16 15:09:10 $ + * @access public + * @see BaseParamFilterReader + * @package phing.filters + */ +class ReplaceTokens extends BaseParamFilterReader implements ChainableReader { + + /** + * Default "begin token" character. + * @var string + */ + const DEFAULT_BEGIN_TOKEN = "@"; + + /** + * Default "end token" character. + * @var string + */ + const DEFAULT_END_TOKEN = "@"; + + /** + * [Deprecated] Data that must be read from, if not null. + * @var string + */ + private $_queuedData = null; + + /** + * Array to hold the replacee-replacer pairs (String to String). + * @var array + */ + private $_tokens = array(); + + /** + * Array to hold the token sources that make tokens from + * different sources available + * @var array + */ + private $_tokensources = array(); + + /** + * Array holding all tokens given directly to the Filter and + * those passed via a TokenSource. + * @var array + */ + private $_alltokens = null; + + /** + * Character marking the beginning of a token. + * @var string + */ + private $_beginToken = "@"; // self::DEFAULT_BEGIN_TOKEN; + + /** + * Character marking the end of a token. + * @var string + */ + private $_endToken = "@"; //self::DEFAULT_END_TOKEN; + + /** + * Performs lookup on key and returns appropriate replacement string. + * @param array $matches Array of 1 el containing key to search for. + * @return string Text with which to replace key or value of key if none is found. + * @access private + */ + private function replaceTokenCallback($matches) { + + $key = $matches[1]; + + /* Get tokens from tokensource and merge them with the + * tokens given directly via build file. This should be + * done a bit more elegantly + */ + if ($this->_alltokens === null) { + $this->_alltokens = array(); + + $count = count($this->_tokensources); + for ($i = 0; $i < $count; $i++) { + $source = $this->_tokensources[$i]; + $this->_alltokens = array_merge($this->_alltokens, $source->getTokens()); + } + + + $this->_alltokens = array_merge($this->_tokens, $this->_alltokens); + } + + $tokens = $this->_alltokens; + + $replaceWith = null; + $count = count($tokens); + + for ($i = 0; $i < $count; $i++) { + if ($tokens[$i]->getKey() === $key) { + $replaceWith = $tokens[$i]->getValue(); + } + } + + if ($replaceWith === null) { + $replaceWith = $this->_beginToken . $key . $this->_endToken; + $this->log("No token defined for key \"".$this->_beginToken . $key . $this->_endToken."\""); + } else { + $this->log("Replaced \"".$this->_beginToken . $key . $this->_endToken ."\" with \"".$replaceWith."\""); + } + + return $replaceWith; + } + + /** + * Returns stream with tokens having been replaced with appropriate values. + * If a replacement value is not found for a token, the token is left in the stream. + * + * @return mixed filtered stream, -1 on EOF. + */ + function read($len = null) { + if ( !$this->getInitialized() ) { + $this->_initialize(); + $this->setInitialized(true); + } + + // read from next filter up the chain + $buffer = $this->in->read($len); + + if($buffer === -1) { + return -1; + } + + // filter buffer + $buffer = preg_replace_callback( + "/".preg_quote($this->_beginToken)."([\w\.\-:]+?)".preg_quote($this->_endToken)."/", + array($this, 'replaceTokenCallback'), $buffer); + + return $buffer; + } + + /** + * Sets the "begin token" character. + * + * @param string $beginToken the character used to denote the beginning of a token. + */ + function setBeginToken($beginToken) { + $this->_beginToken = (string) $beginToken; + } + + /** + * Returns the "begin token" character. + * + * @return string The character used to denote the beginning of a token. + */ + function getBeginToken() { + return $this->_beginToken; + } + + /** + * Sets the "end token" character. + * + * @param string $endToken the character used to denote the end of a token + */ + function setEndToken($endToken) { + $this->_endToken = (string) $endToken; + } + + /** + * Returns the "end token" character. + * + * @return the character used to denote the beginning of a token + */ + function getEndToken() { + return $this->_endToken; + } + + /** + * Adds a token element to the map of tokens to replace. + * + * @return object The token added to the map of replacements. + * Must not be <code>null</code>. + */ + function createToken() { + $num = array_push($this->_tokens, new Token()); + return $this->_tokens[$num-1]; + } + + /** + * Adds a token source to the sources of this filter. + * + * @return object A Reference to the source just added. + */ + function createTokensource() { + $num = array_push($this->_tokensources, new TokenSource()); + return $this->_tokensources[$num-1]; + } + + /** + * Sets the map of tokens to replace. + * ; used by ReplaceTokens::chain() + * + * @param array A map (String->String) of token keys to replacement + * values. Must not be <code>null</code>. + */ + function setTokens($tokens) { + // type check, error must never occur, bad code of it does + if ( !is_array($tokens) ) { + throw new Exception("Excpected 'array', got something else"); + } + + $this->_tokens = $tokens; + } + + /** + * Returns the map of tokens which will be replaced. + * ; used by ReplaceTokens::chain() + * + * @return array A map (String->String) of token keys to replacement values. + */ + function getTokens() { + return $this->_tokens; + } + + /** + * Sets the tokensources to use; used by ReplaceTokens::chain() + * + * @param array An array of token sources. + */ + function setTokensources($sources) { + // type check + if ( !is_array($sources)) { + throw new Exception("Exspected 'array', got something else"); + } + $this->_tokensources = $sources; + } + + /** + * Returns the token sources used by this filter; used by ReplaceTokens::chain() + * + * @return array + */ + function getTokensources() { + return $this->_tokensources; + } + + /** + * Creates a new ReplaceTokens using the passed in + * Reader for instantiation. + * + * @param object A Reader object providing the underlying stream. + * Must not be <code>null</code>. + * + * @return object A new filter based on this configuration, but filtering + * the specified reader + */ + function chain(Reader $reader) { + $newFilter = new ReplaceTokens($reader); + $newFilter->setProject($this->getProject()); + $newFilter->setBeginToken($this->getBeginToken()); + $newFilter->setEndToken($this->getEndToken()); + $newFilter->setTokens($this->getTokens()); + $newFilter->setTokensources($this->getTokensources()); + $newFilter->setInitialized(true); + return $newFilter; + } + + /** + * Initializes tokens and loads the replacee-replacer hashtable. + * This method is only called when this filter is used through + * a <filterreader> tag in build file. + */ + private function _initialize() { + $params = $this->getParameters(); + if ( $params !== null ) { + for($i = 0 ; $i<count($params) ; $i++) { + if ( $params[$i] !== null ) { + $type = $params[$i]->getType(); + if ( $type === "tokenchar" ) { + $name = $params[$i]->getName(); + if ( $name === "begintoken" ) { + $this->_beginToken = substr($params[$i]->getValue(), 0, 1); + } else if ( $name === "endtoken" ) { + $this->_endToken = substr($params[$i]->getValue(), 0, 1); + } + } else if ( $type === "token" ) { + $name = $params[$i]->getName(); + $value = $params[$i]->getValue(); + + $tok = new Token(); + $tok->setKey($name); + $tok->setValue($value); + + array_push($this->_tokens, $tok); + } else if ( $type === "tokensource" ) { + // Store data from nested tags in local array + $arr = array(); $subparams = $params[$i]->getParams(); + $count = count($subparams); + for ($i = 0; $i < $count; $i++) { + $arr[$subparams[$i]->getName()] = $subparams[$i]->getValue(); + } + + // Create TokenSource + $tokensource = new TokenSource(); + if (isset($arr["classname"])) + $tokensource->setClassname($arr["classname"]); + + // Copy other parameters 1:1 to freshly created TokenSource + foreach ($arr as $key => $value) { + if (strtolower($key) === "classname") + continue; + $param = $tokensource->createParam(); + $param->setName($key); + $param->setValue($value); + } + + $this->_tokensources[] = $tokensource; + } + } + } + } + } +} + +/** + * Holds a token. + */ +class Token { + + /** + * Token key. + * @var string + */ + private $_key; + + /** + * Token value. + * @var string + */ + private $_value; + + /** + * Sets the token key. + * + * @param string $key The key for this token. Must not be <code>null</code>. + */ + function setKey($key) { + $this->_key = (string) $key; + } + + /** + * Sets the token value. + * + * @param string $value The value for this token. Must not be <code>null</code>. + */ + function setValue($value) { + $this->_value = (string) $value; + } + + /** + * Returns the key for this token. + * + * @return string The key for this token. + */ + function getKey() { + return $this->_key; + } + + /** + * Returns the value for this token. + * + * @return string The value for this token. + */ + function getValue() { + return $this->_value; + } +} + +?> |