Thanks for pointing this out! I first need to search and find in the database (bigtable) and then display the articles (text) with the highlighted words. The texts in the databasee contains HTML or plain text formats.
On 1 jan, 09:26, Mengu <whalb...@gmail.com> wrote: > 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) -- You received this message because you are subscribed to the Google Groups "web2py-users" group. To post to this group, send email to web...@googlegroups.com. To unsubscribe from this group, send email to web2py+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/web2py?hl=en.
