1 | <?php
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2 | /**
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3 | * Smarty plugin
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4 | * @package Smarty
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5 | * @subpackage plugins
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6 | */
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7 |
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8 | /**
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9 | * Smarty trimwhitespace outputfilter plugin
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10 | *
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11 | * File: outputfilter.trimwhitespace.php<br>
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12 | * Type: outputfilter<br>
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13 | * Name: trimwhitespace<br>
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14 | * Date: Jan 25, 2003<br>
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15 | * Purpose: trim leading white space and blank lines from
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16 | * template source after it gets interpreted, cleaning
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17 | * up code and saving bandwidth. Does not affect
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18 | * <<PRE>></PRE> and <SCRIPT></SCRIPT> blocks.<br>
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19 | * Install: Drop into the plugin directory, call
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20 | * <code>$smarty->load_filter('output','trimwhitespace');</code>
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21 | * from application.
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22 | * @author Monte Ohrt <monte at ohrt dot com>
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23 | * @author Contributions from Lars Noschinski <lars@usenet.noschinski.de>
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24 | * @version 1.3
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25 | * @param string
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26 | * @param Smarty
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27 | */
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28 | function smarty_outputfilter_trimwhitespace($source, &$smarty)
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29 | {
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30 | // Pull out the script blocks
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31 | preg_match_all("!<script[^>]+>.*?</script>!is", $source, $match);
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32 | $_script_blocks = $match[0];
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33 | $source = preg_replace("!<script[^>]+>.*?</script>!is",
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34 | '@@@SMARTY:TRIM:SCRIPT@@@', $source);
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35 |
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36 | // Pull out the pre blocks
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37 | preg_match_all("!<pre>.*?</pre>!is", $source, $match);
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38 | $_pre_blocks = $match[0];
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39 | $source = preg_replace("!<pre>.*?</pre>!is",
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40 | '@@@SMARTY:TRIM:PRE@@@', $source);
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41 |
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42 | // Pull out the textarea blocks
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43 | preg_match_all("!<textarea[^>]+>.*?</textarea>!is", $source, $match);
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44 | $_textarea_blocks = $match[0];
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45 | $source = preg_replace("!<textarea[^>]+>.*?</textarea>!is",
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46 | '@@@SMARTY:TRIM:TEXTAREA@@@', $source);
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47 |
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48 | // remove all leading spaces, tabs and carriage returns NOT
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49 | // preceeded by a php close tag.
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50 | $source = trim(preg_replace('/((?<!\?>)\n)[\s]+/m', '\1', $source));
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51 |
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52 | // replace script blocks
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53 | smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:SCRIPT@@@",$_script_blocks, $source);
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54 |
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55 | // replace pre blocks
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56 | smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:PRE@@@",$_pre_blocks, $source);
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57 |
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58 | // replace textarea blocks
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59 | smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:TEXTAREA@@@",$_textarea_blocks, $source);
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60 |
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61 | return $source;
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62 | }
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63 |
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64 | function smarty_outputfilter_trimwhitespace_replace($search_str, $replace, &$subject) {
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65 | $_len = strlen($search_str);
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66 | $_pos = 0;
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67 | for ($_i=0, $_count=count($replace); $_i<$_count; $_i++)
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68 | if (($_pos=strpos($subject, $search_str, $_pos))!==false)
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69 | $subject = substr_replace($subject, $replace[$_i], $_pos, $_len);
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70 | else
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71 | break;
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72 |
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73 | }
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74 |
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75 | ?>
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