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Strip XML- or HTML-like tags from a string

// A convenience method that strips XML/HTML tags from string

   1  
   2  private String stripTags(String HTMLString) {
   3      String noHTMLString = HTMLString.replaceAll("\\<.*?>","");
   4      return noHTMLString;
   5  }
to html tags java string xml replace by sugonaut on Sep 29, 2008

Extracting just the text from a REXML document

With REXML only the leaf nodes return a value from the text property, however by extending the REXML::Document class it's possible to return the text from the whole document.

   1  
   2  class REXML::Document
   3    def text()
   4      self.to_s.gsub(/<\/?span>/," ").gsub(/<\/?[^>]+>/, "")
   5    end
   6  end
   7  
   8  html = "<body><p><span>guardian.co.uk, UK -</span><span>11 hours ago</span>
   9  </p><p>Baltimore is not the inner circle of <strong>hell</strong>. It  is not 
  10  entirely devoured by a drug economy that serves as its last viable industry. 
  11  <strong>...</strong></p><div style='clear:both'/></body>"
  12  
  13  doc_html = Document.new(html)
  14  puts doc_html.text

=> " guardian.co.uk, UK - 11 hours ago Baltimore is not the inner circle of hell. It is not entirely devoured by a drug economy that serves as its last viable industry. ..."

Reference: Strip html tags [dzone.com]
to ruby html tags xml rexml tag strip by jrobertson on Sep 06, 2008

.NET Regex Remove HTML tags from web content.

From site : http://www.123aspx.com/redir.aspx?res=35886

   1  
   2  using System.Text.RegularExpressions;  
   3  ...  
   4  public static string RemoveHTML(string in_HTML)    
   5  {      
   6       return Regex.Replace(lv_HTML, "<(.|\n)*?>", "");    
   7  }
to html tags regex .net remove remove html tags by deostroll on Aug 05, 2008

quote-delineated tag sets

snippet to surround a tag with “smart quotes” if it contains any odd characters. i.e. to display tags entered in a flickr-like style (space separated except inside quotes)

   1  
   2  tag.gsub(/^/,'&ldquo;').gsub(/$/,'&rdquo;') if tag[0].match(/[^A-Za-z0-9\-_.]/)
to ruby html tags tagging display quotes quoting smart by elliottcable on Mar 13, 2008

Python id3 tag from containing folder

// Total noob python script for renaming the 'album' tag in an untagged mp3 file. I plug it into podnova (using advanced -> run command) as it downloads my podcasts so that they get sorted correctly when I copy them onto my ipod.

PodNova organizes podcasts by folder. the iPod organizes podcasts by album tag. If you use GtkPod to copy podcasts from PodNova, this can help keep mp3 podcasts categorized properly.

   1  
   2  #!/usr/bin/python
   3  import sys
   4  
   5  # requires ID3 module, easily googled
   6  from ID3 import *
   7  for arg in sys.argv:
   8      fullfilename = arg
   9  
  10  # This only works for mp3 files, I would love suggestions for mp4 tags
  11  id3info = ID3(fullfilename)
  12  
  13  # Print command useful for logging.
  14  print id3info
  15  
  16  # Check if album info exists
  17  if not id3info.has_key('ALBUM'):
  18      print 'appending album tag'
  19      # truncate to just containing directory:
  20      folder = fullfilename[1:rfind(fullfilename,'/')]
  21      # define album based on podcast's directory
  22      album = (folder[rfind(folder,'/'):]).strip('/')
  23      id3info.album = album
  24      if id3info.album == album:
  25          print 'success!'
  26  else:
  27      print 'nothing to change'
  28
to tags python id3 mp3 podcasts ipod PodNova GtkPod by dannyq on Feb 13, 2007

Replace old style PHP tags to new style tags

Sometimes you have to work with scripts that contain old-style PHP tags. This little snippets fixes those scripts, so they use the new style PHP tags.

   1  
   2  find * -type f -exec perl -i -wpe 's/<\?php/<\?/g' {} \;
   3  find * -type f -exec perl -i -wpe 's/<\?/<\?php/g' {} \;
to tags php bash replace search fix by yoghoyogho on May 17, 2006

Parse Technorati-style Tags from HTML

An enhancement to the String class that parses out Technorati-style tags. Uses Typo's strip_html method to remove img tags and other markup.

   1  
   2  class String
   3    # Strips any html markup from a string
   4    TYPO_TAG_KEY = TYPO_ATTRIBUTE_KEY = /[\w:_-]+/
   5    TYPO_ATTRIBUTE_VALUE = /(?:[A-Za-z0-9]+|(?:'[^']*?'|"[^"]*?"))/
   6    TYPO_ATTRIBUTE = /(?:#{TYPO_ATTRIBUTE_KEY}(?:\s*=\s*#{TYPO_ATTRIBUTE_VALUE})?)/
   7    TYPO_ATTRIBUTES = /(?:#{TYPO_ATTRIBUTE}(?:\s+#{TYPO_ATTRIBUTE})*)/
   8    TAG = %r{<[!/?\[]?(?:#{TYPO_TAG_KEY}|--)(?:\s+#{TYPO_ATTRIBUTES})?\s*(?:[!/?\]]+|--)?>}
   9    def strip_html
  10      self.gsub(TAG, '').gsub(/\s+/, ' ').strip
  11    end
  12  
  13    def tags
  14      scan(/<a\s+[^>]*\s*rel=\s*(.?)tag\1[^>]*>(.+?)<\/a>/i).
  15      map { |match| match.last.strip_html rescue nil }.
  16      compact.select { |s| !s.strip.empty? }
  17    end
  18  end
  19  
  20  # Example usage
  21  
  22  s = %{<a href="http://www.docstrangelove.com/tag/civil-war" rel="tag">civil war</a> <a href="http://www.technorati.com/tag/civil+war" rel="tag"><img src="http://www.docstrangelove.com/wp-content/plugins/UltimateTagWarrior/technoratiicon.jpg" alt="Technorati tag page for civil war"/></a> <a href="http://www.docstrangelovecom/tag/iraq" rel="tag">iraq</a> <a href="http://www.technorati.com/tag/iraq" rel="tag"><img src="http://www.docstrangelove.com/wp-content/plugins/UltimateTagWarrior/technoratiicon.jpg" alt="Technorati tag page for iraq"/></a>}
  23  
  24  s.tags
  25  # => ["civil war", "iraq"]
to ruby rails tags string by canadaduane on Mar 24, 2006

Space-Separated Tag Parser

Here is a function that accepts a string containing tags and returns an array of extracted tags. (Updated to ignore duplicates)
   1  
   2  /**
   3   * Parses a String of Tags
   4   *
   5   * Tags are space delimited. Either single or double quotes mark a phrase.
   6   * Odd quotes will cause everything on their right to reflect as one single
   7   * tag or phrase. All white-space within a phrase is converted to single
   8   * space characters. Quotes burried within tags are ignored! Duplicate tags
   9   * are ignored, even duplicate phrases that are equivalent.
  10   *
  11   * Returns an array of tags.
  12   */
  13  function ParseTagString($sTagString)
  14  {
  15  	$arTags = array();		// Array of Output
  16  	$cPhraseQuote = null;	// Record of the quote that opened the current phrase
  17  	$sPhrase = null;		// Temp storage for the current phrase we are building
  18  	
  19  	// Define some constants
  20  	static $sTokens = " \r\n\t";	// Space, Return, Newline, Tab
  21  	static $sQuotes = "'\"";		// Single and Double Quotes
  22  	
  23  	// Start the State Machine
  24  	do
  25  	{
  26  		// Get the next token, which may be the first
  27  		$sToken = isset($sToken)? strtok($sTokens) : strtok($sTagString, $sTokens);
  28  		
  29  		// Are there more tokens?
  30  		if ($sToken === false)
  31  		{
  32  			// Ensure that the last phrase is marked as ended
  33  			$cPhraseQuote = null;
  34  		}
  35  		else
  36  		{		
  37  			// Are we within a phrase or not?
  38  			if ($cPhraseQuote !== null)
  39  			{
  40  				// Will the current token end the phrase?
  41  				if (substr($sToken, -1, 1) === $cPhraseQuote)
  42  				{
  43  					// Trim the last character and add to the current phrase, with a single leading space if necessary
  44  					if (strlen($sToken) > 1) $sPhrase .= ((strlen($sPhrase) > 0)? ' ' : null) . substr($sToken, 0, -1);
  45  					$cPhraseQuote = null;
  46  				}
  47  				else
  48  				{
  49  					// If not, add the token to the phrase, with a single leading space if necessary
  50  					$sPhrase .= ((strlen($sPhrase) > 0)? ' ' : null) . $sToken;
  51  				}
  52  			}
  53  			else
  54  			{
  55  				// Will the current token start a phrase?
  56  				if (strpos($sQuotes, $sToken[0]) !== false)
  57  				{
  58  					// Will the current token end the phrase?
  59  					if ((strlen($sToken) > 1) && ($sToken[0] === substr($sToken, -1, 1)))
  60  					{
  61  						// The current token begins AND ends the phrase, trim the quotes
  62  						$sPhrase = substr($sToken, 1, -1);
  63  					}
  64  					else
  65  					{
  66  						// Remove the leading quote
  67  						$sPhrase = substr($sToken, 1);
  68  						$cPhraseQuote = $sToken[0];
  69  					}
  70  				}
  71  				else
  72  					$sPhrase = $sToken;
  73  			}
  74  		}
  75  		
  76  		// If, at this point, we are not within a phrase, the prepared phrase is complete and can be added to the array
  77  		if (($cPhraseQuote === null) && ($sPhrase != null))
  78  		{
  79  			$sPhrase = strtolower($sPhrase);
  80  			if (!in_array($sPhrase, $arTags)) $arTags[] = $sPhrase;
  81  			$sPhrase = null;
  82  		}
  83  	}
  84  	while ($sToken !== false);	// Stop when we receive FALSE from strtok()
  85  	return $arTags;
  86  }


The string can be recreated from the array with the use of this reverse function:
   1  
   2  /**
   3   * Reverses ParseTagString()
   4   */
   5  function CreateTagString($arTags)
   6  {
   7  	// Prepare each tag to be imploded
   8  	for ($i = 0; $i < sizeof($arTags); $i++)
   9  	{
  10  		// Record findings
  11  		$bContainsWhitespace = false;	// Was whitespace found?
  12  		$cRequiredQuote = '"';			// Use double-quote by default
  13  		$cLastChar = null;
  14  	
  15  		// Search the tag
  16  		for ($j = 0; $j < strlen($arTags[$i]); $j++)
  17  		{
  18  			$c = $arTags[$i][$j];
  19  			
  20  			// If the current character is a space
  21  			if ($c === ' ')
  22  			{
  23  				$bContainsWhitespace = true;
  24  				
  25  				// If the previous char was a double quote, we require single quotes round our phrase
  26  				if ($cLastChar === '"')
  27  				{
  28  					$cRequiredQuote = "'";
  29  					break;	// There is no more point in continuing our search, we cant handle double-mixed quotes
  30  				}
  31  			}
  32  			
  33  			// Record this char as the last char
  34  			$cLastChar = $c;
  35  		}
  36  		
  37  		// Quote if necessary
  38  		if ($bContainsWhitespace) $arTags[$i] = $cRequiredQuote . $arTags[$i] . $cRequiredQuote;
  39  	}
  40  	return implode(' ', $arTags);
  41  }


To test the whole system, use the following array of test cases:
   1  
   2  $arTestInputs = array(
   3  	"this test ensures that words are correctly split",
   4  	"in this test \"phrases\" and \"multi-word phrases\" are tested",
   5  	"this test shows the behaviour if an \"odd quote is detected",
   6  	"this test shows that 'different quotes' work too",
   7  	"but mixed quotes fail: \"test phrase' does not stop on the quote",
   8  	"which can be usefull in some cases where \"the systems' requirements\" state that it is necessary",
   9  	"quotes need not be attached to \" their phrase \"",
  10  	"embedded\"quotes are ignored!",
  11  	"this is also usefull and demonstrates the system's coolness",
  12  	"redundant   white-space is   removed from \"  tags    and phrases\"",
  13  	"\"\"double quotes\"\" will result in single quotes!",
  14  	"remember that 'double-quotes\" may be nested within single quotes'",
  15  	"TaGs ArE NOT case SENsITiVE!",
  16  	"a duplicate tag will be removed from the tag list",
  17  	"even a \" complex phrase\" that is equivalent to another 'compleX   PHrASe   '"
  18  );
  19  
  20  foreach ($arTestInputs as $sTest)
  21  {
  22  	print ("<pre>$sTest</pre>");
  23  	print "<pre>";
  24  	print_r (ParseTagString($sTest));
  25  	print "</pre>";
  26  	print "<pre>";
  27  	print CreateTagString(ParseTagString($sTest));
  28  	print "</pre>";
  29  	print "<hr />";
  30  }


2006-03-09 0.1.0 - 0.2.0 Duplicate phrases are now ignored.

--
Version 0.2.0 - 2006-03-09
STEM: The STEM Cells of PHP
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License
http://creativecommons.org/licenses/by-sa/2.5/
to tags php space parser parse split STEM tag separated token tokenize tokenizer by Charlie on Mar 03, 2006 2 Comments

Using multiple tags on Code Snippets

I spent a lot of time trying to select snippets with
contain multiple tags. (series60 and sql)
There is no '+' links I can click anymore.
After about 10 minutes of trial and error, I find out how.
This also answer another question on correct use of URL.
   1  
   2  # for tag 'series60' AND 'sql'
   3  http://www.bigbold.com/snippets/tags/series60/sql/
   4  
   5  # this doesn't work
   6  http://www.bigbold.com/snippets/tag/series60/sql/
   7  
   8  # all of these work (single tag case)
   9  http://bigbold.com/snippets/tag/series60/
  10  http://bigbold.com/snippets/tags/series60/
  11  http://www.bigbold.com/snippets/tag/series60/
  12  http://www.bigbold.com/snippets/tags/series60/

My conclusion is that.
For a single tag, use '/tag/...'.
For multiple tags, use '/tags/...'.
The first is quicker to type, while the second is flexible in case you want to filter further.
to tags snippets url code multiple tag by korakot on Mar 02, 2006 1 Comments

Flat-tag updater

Pass new tags followed by a table name and database handle and this function updates the table so that each tag becomes properly associated/its record created, eg:

table state:
tagname | relatedtags
-----------------------
blog | rss;personal
rss | blog
personal | blog

call (table is named tags):
updateTags("blog personal friends","tags",$db);

table state:
tagname | relatedtags
-----------------------
blog | rss;personal;friends
rss | blog
personal | blog;friends
friends | blog;personal


   1  
   2  function updateTags($tags,$table,$db) {//category handling stuff
   3     include("recordExists.php");//see http://bigbold.com/snippets/posts/show/464
   4     $cats = explode(";",$tags);//parse tags into array cats
   5     foreach($cats as $cat) {//loop through cats
   6        $tmp = array($cat);//dummy array with cat in it
   7        $tmp = array_diff($cats,$tmp);//get everything in cats that is not cat
   8        if(!recordExists("tagname",$cat,$table,$db)) {//if there is no category by this name yet
   9           $tmp = implode(";",$tmp);//make tmp into semicolon-separated string
  10           $result = mysql_query("INSERT INTO ".$table." (tagname,relatedtags) VALUES ('$cat','$tmp')", $db) or die(mysql_error());//insert category into database
  11        } else {
  12           $result = mysql_query("SELECT relatedtags FROM ".$table." WHERE tagname='$cat'", $db) or die(mysql_error());//select already related tags
  13           $result = mysql_fetch_array($result);//get the result row as an array
  14           $result = explode(";",$result['relatedtags']);//parse relatedtags into result
  15           $result = array_merge($tmp,$result);//merge the cats in this $tags (without cat, hence tmp) with the ones that were in there already
  16           $result = array_unique($result);//strip duplicates
  17           $result = implode(";",$result);//make result into semicolon-separated string
  18           $result = mysql_query("UPDATE ".$table." SET relatedtags='$result' WHERE tagname='$cat'", $db) or die(mysql_error());//update category
  19        }//end if-else !recordExists
  20     }//end foreach cats
  21  }//end function updateTags
to tags mysql php by singpolyma on Jul 07, 2005
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