Editing macro - SmartyWiki

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=== The macro Prefilter ===
Copy this contents and past it to ./smarty/plugins/prefilter.macro.php
<code>
<?php
/**
 * A prefilter for macros in a smarty-template.
 * @internal ANSI-Chars: 齡塤籙稛
 * @internal coding:ISO-8859-1
 * @author Stowasser Harald, Freinet GmBH, Germany. <stowasser@freinet.de>
 * @since 14.09.07 16:07
 * @version 0.3
 * @example ../../www-htdocs/test/form/formular.html
 * @package smarty.plugins
 *
 * With this prefilter You can set macros in a smarty-Template.
 * the macros will be replaced before the smarty-compiler does his work
 * The Filter can also handle macros with content.
 * examples:
 *
 *
 *This defines an output for your error-variable
 *<code>
 * {set_macro error}
 * {$error}
 * {/set_macro error}
 *</code>
 *so this call:
 *<code>
 * {if $ding|has_error}{get_macro error}{/if}
 *</code>
 *will be replaced to:
 *<code>
 * {if $ding|has_error}{$error}{/if}
 *</code>
 *
 *The examlpe for my label is a litle bit harder:
 *The {$content}-Tag will be replaced with the text between {get_macro label} and {/get_macro label}
 *<code>
 * {set_macro label}
 * {if $form_last_element|is_required}
 * <label class="pflicht" for="{$form_last_element}">{$content}*</label>
 * {else}
 * <label class="normal" for="{$form_last_element}">{$content}</label>
 * {/if}
 * {/set_macro label}
 *
 * {assign var='form_last_element' value='adr_forename'}
 * {get_macro label}Forename:{/get_macro label}
 * <input type="text" name="{$form_last_element}" value="{$adresse->getForename()}"/>
 *</code>
 *
 *
 *You cann also define a file from wich macros should be loaded.
 *<code>
 * {load_macro file='standard_macros.tpl'}
 *</code>
 */

/**
 * Reads a set_macro from text
 * @since 0.2 (14.09.07 16:07)
 * @param String $text The string 2 get the macro
 * @return Array a set with Macros. [0][0]=The hole Macrodef,[0][1]=The Macro name,[0][2]=The Macro text
 */

/**
 * Merges 2 Macrosets.
 * @see prefilter_macro_read_macros
 * @since 0.2 (14.09.07 16:07)
 * @param Array $arr1 The Array wich will be extended
 * @param Array $arr2 The other Array.
 */
function prefilter_macro_merge_macroset( &$arr1, $arr2 ) {
  if ( count( $arr1 ) != 3 ) {
    $arr1 = $arr2;
  } else {
    $arr1[0]=array_merge( $arr1[0], $arr2[0] );
    $arr1[1]=array_merge( $arr1[1], $arr2[1] );
    $arr1[2]=array_merge( $arr1[2], $arr2[2] );
  }
}

/**
 * Serarch for Macrodefinitions, and replace them.
 * @since 0.2 (14.09.07 16:07)
 * @param string $tpl_source The Source-Code of the Smarty.
 * @param Smarty &$smarty      The Smarty wich has called this filter
 * @throws Exception if File not found in load_macro command.
 * @return string The changed Source-Code.
 */
function smarty_prefilter_macro( $tpl_source, &$smarty ) {
  $macroset = array( );
  // Search for a load_macro-tag:
  $macroload = array( );

$pattern = "/[{] *load_macro (.*?)[}]/";
 preg_match_all( $pattern, $tpl_source, $macroload );
 // And then delete it from the template:danach die set_macro-tags entfernen
 $tpl_source = preg_replace( "/[{] *load_macro .*?[}]/", "", $tpl_source );
 // Search teh file in the template-path open it and read the macros.
 if ( count( $macroload ) == 2 ) {
 $anz = count( $macroload[1] );
 for ( $i = 0; $i < $anz; $i++ ) {
 preg_match( '/file *= *["\'](.*)["\']/', $macroload[1][$i], $file );
 $file = $file[1];
 $path = $file;
 if ( !file_exists( $path ) ) {
 $path = $smarty->template_dir . $file;
 }
 if ( !file_exists( $path ) ) {
 $path = $smarty->template_dir . '../default-templates/' . $file;
 }
 if ( !file_exists( $path ) ) {
 throw new Exception( "load_macro file:" . $file . " not found" );
 }
 $handle = fopen( $path, "r" );
 $contents = fread( $handle, filesize( $path ) );
 fclose( $handle );
 prefilter_macro_merge_macroset( &$macroset, prefilter_macro_read_macros( $contents ) );
 }
 }
 // Search for a set_macro-tag:
 prefilter_macro_merge_macroset( &$macroset, prefilter_macro_read_macros( $tpl_source ) );

// And then delete it from the template:danach die set_macro-tags entfernen
 $tpl_source = preg_replace( "/[{] *set_macro .*?[}].*?[{] *\/ *set_macro .*?[}]/s", "", $tpl_source );
 // Now replace the get_macro-tags
 if ( count( $macroset ) == 3 ) {
 $anz = count( $macroset[2] );
 for ( $i = 0; $i < $anz; $i++ ) {
 // is this a macro with content?
 $content = array( );
 $macrotext = $macroset[1][$i];
 $macro = 'get_macro ' . $macroset[2][$i];
 $pattern = "/[{]\\s*" . $macro . "\\s*[}](.*?)[{]\\s*\/ *" . $macro . "\\s*[}]/s";

preg_match_all( $pattern, $tpl_source, $content );
 if ( count( $content ) > 0 ) {
 // then replace the Content
 $anz2 = count( $content[1] );
 for ( $j = 0; $j < $anz2; $j++ ) {
 $neutext = preg_replace( "/[{] *[$]content.*?[}]/", $content[1][$j], $macrotext );
 $tpl_source = str_replace( $content[0][$j], $neutext, $tpl_source );
 }
 } else {
 }
 //If there is no closing tag just do a replace.
 $macrotext = preg_replace( "/[{]\\s*[$]content.*?[}]/", "", $macrotext );
 $tpl_source = preg_replace( "/[{]\\s*" . $macro . "\\s*[}]/", $macrotext, $tpl_source );
 }
 }
 return $tpl_source;
}
?>
</code>

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