Thank u Nik for your reply. On Friday, 9 May 2014 20:25:55 UTC+5:30, Nikolas Everett wrote: > > > > > On Fri, May 9, 2014 at 8:29 AM, Anand kumar <anand...@gmail.com<javascript:> > > wrote: > >> >> >> Am having an index of huge content, from which I just want to have the >> highlighting of the specific text. >> >> The highlighted text might have appear as many as times, all I want to >> have two or more lines before and after the line of highlighted text, by >> which i can have a snippet of text with highlighted parts are in the middle >> of the snippet, so that they can be easily located and identified from a >> huge content of file. >> >> Is it possible? >> >> > The only segmentation options are based on characters, sentences, and > grabbing the contents of the whole field. The trick with lines is, unless > the text contains explicit new lines and you only wrap on new lines, then > you have to estimate line breaks based on the rendering context. Stuff > like width in pixels and the font. If you want to be precise you need the > screen dpi as well and a font rendering engine that works similarly. Some > contexts don't properly render ligatures, some do. And its 1000x worse > when you leave English and go to something like Arabic or Sanskrit. There > be dragons. > > But, if you are talking about code, or something else with explicit > newlines and that only wraps on newlines, then the answer is still no, but > it wouldn't be hard to implement. > > Nik >
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