for this purpose i am using a jquery plugin named highlight. On Dec 31 2009, 6:05 pm, stelg <stelg.best...@gmail.com> wrote: > Enclosed an example that i use to highlight words in a text string > which might also contain HTML tags and entities. > > Maybe you can use it in your Web2py applications? > > # -*- coding: utf-8 -*- > import re > from BeautifulSoup import BeautifulStoneSoup > # seehttp://effbot.org/zone/python-list.htm > #http://effbot.org/librarybook/htmlentitydefs.htm > def remove_tags(in_text): > # convert in_text to a mutable object (e.g. list) > altreplacechars =['^','~','|','`','%','#','@','!','+','%'] > # verify first that one of this alternative replace characters do > not appear in search tekst > altchar = ' ' > for altchar in altreplacechars: > if not altchar in in_text: > break > s_list = list(in_text) > i = 0 > while i < len(s_list): > # find the < > if s_list[i] == '<': > while s_list[i] != '>': > # remove everything between the < and the > > s_list.pop(i) > s_list.insert(i,altchar) > i=i+1 > # make sure we get rid of the > to > s_list.pop(i) > s_list.insert(i,altchar) > else: > i=i+1 > join_char='' > return join_char.join(s_list) > > def insert_highlight_tags(text, searchstring, > start_tag_highlight='<span style="background-color:%s" id="found- > %s">', \ > end_tag_highlight='</span>', color='yellow', > case_sensitive=False): > converted_text = str(BeautifulStoneSoup(text, > convertEntities=BeautifulStoneSoup.HTML_ENTITIES)) > clean_text = remove_tags(converted_text) > #print clean_text > # no_tags_text = list(clean_text) > text = ''.join(text) > text = list(converted_text) > if not case_sensitive: > clean_text=clean_text.upper() > searchstring =searchstring.upper() > idx = [match.start() for match in re.finditer(re.escape > (searchstring), clean_text)] > offset=0 > diff = 0 > iprev = 0 > tagcounter=0 > for i in idx: > tagcounter += 1 > diff = i - iprev > offset = offset + diff > #no_tags_text.insert(offset, start_tag_highlight %tagcounter) > text.insert(offset, start_tag_highlight %(color, tagcounter)) > offset = offset + len(searchstring) + 1 # positioning after > search word > #no_tags_text.insert(offset, end_tag_highlight) > text.insert(offset, end_tag_highlight) > offset = offset - len(searchstring) + 1 > # positioning after end tag > iprev = i > > # no_tags_text = ''.join(no_tags_text) > text = ''.join(text) > return text > > if __name__ == '__main__': > import sys > text = u'''<html><body><h1>This ~is my ^’ text to > test;<h1><a href="http://localhost";>& O yeh, This is the hyperlink to > my »local machine».</a><p>This is my paragraph< /p></ > body></html>''' > searchstring='~' #search string > start_tag_highlight='<a style="background-color:red" id="found- > %s">' # start highlight-tag > end_tag_highlight='</a>' # end highlight-tag > > print insert_highlight_tags(text, searchstring, color='green', > case_sensitive=True)
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