smarty/plugins/block.textformat.php
author Dan
Sun, 23 Mar 2008 23:11:56 -0400
changeset 6 5f35ebc4f9bb
parent 0 c63de9eb7045
permissions -rw-r--r--
First release version. Renamed to Greyhound and readme/license files added.
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<?php
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/**
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 * Smarty plugin
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 * @package Smarty
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 * @subpackage plugins
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 */
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/**
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 * Smarty {textformat}{/textformat} block plugin
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 *
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 * Type:     block function<br>
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 * Name:     textformat<br>
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 * Purpose:  format text a certain way with preset styles
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 *           or custom wrap/indent settings<br>
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 * @link http://smarty.php.net/manual/en/language.function.textformat.php {textformat}
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 *       (Smarty online manual)
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 * @param array
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 * <pre>
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 * Params:   style: string (email)
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 *           indent: integer (0)
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 *           wrap: integer (80)
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 *           wrap_char string ("\n")
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 *           indent_char: string (" ")
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 *           wrap_boundary: boolean (true)
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 * </pre>
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 * @author Monte Ohrt <monte at ohrt dot com>
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 * @param string contents of the block
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 * @param Smarty clever simulation of a method
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 * @return string string $content re-formatted
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 */
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function smarty_block_textformat($params, $content, &$smarty)
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{
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    if (is_null($content)) {
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        return;
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    }
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    $style = null;
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    $indent = 0;
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    $indent_first = 0;
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    $indent_char = ' ';
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    $wrap = 80;
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    $wrap_char = "\n";
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    $wrap_cut = false;
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    $assign = null;
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    foreach ($params as $_key => $_val) {
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        switch ($_key) {
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            case 'style':
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            case 'indent_char':
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            case 'wrap_char':
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            case 'assign':
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                $$_key = (string)$_val;
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                break;
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            case 'indent':
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            case 'indent_first':
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            case 'wrap':
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                $$_key = (int)$_val;
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                break;
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            case 'wrap_cut':
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                $$_key = (bool)$_val;
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                break;
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            default:
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                $smarty->trigger_error("textformat: unknown attribute '$_key'");
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        }
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    }
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    if ($style == 'email') {
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        $wrap = 72;
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    }
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    // split into paragraphs
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    $_paragraphs = preg_split('![\r\n][\r\n]!',$content);
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    $_output = '';
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    for($_x = 0, $_y = count($_paragraphs); $_x < $_y; $_x++) {
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        if ($_paragraphs[$_x] == '') {
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            continue;
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        }
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        // convert mult. spaces & special chars to single space
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        $_paragraphs[$_x] = preg_replace(array('!\s+!','!(^\s+)|(\s+$)!'), array(' ',''), $_paragraphs[$_x]);
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        // indent first line
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        if($indent_first > 0) {
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            $_paragraphs[$_x] = str_repeat($indent_char, $indent_first) . $_paragraphs[$_x];
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        }
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        // wordwrap sentences
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        $_paragraphs[$_x] = wordwrap($_paragraphs[$_x], $wrap - $indent, $wrap_char, $wrap_cut);
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        // indent lines
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        if($indent > 0) {
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            $_paragraphs[$_x] = preg_replace('!^!m', str_repeat($indent_char, $indent), $_paragraphs[$_x]);
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        }
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    }
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    $_output = implode($wrap_char . $wrap_char, $_paragraphs);
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    return $assign ? $smarty->assign($assign, $_output) : $_output;
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}
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/* vim: set expandtab: */
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?>