mirror of https://github.com/CGAL/cgal
45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
/* Author: Maxime Gimeno <maxime.gimeno@gmail.com> */
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/***
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Need difflib.js
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Input : 2 strings
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Output: res. Contains the difference between the two input strings.
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According to the result of difflib, will output :
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- replace : -base, +newtext (the two input differs, but none are empty)
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- insert: +newtext (the first input is empty)
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- delete: -base (the second input is empty)
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***/
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function print_diff(base, newtext){
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// create a SequenceMatcher instance that diffs the two sets of lines
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var sm = new difflib.SequenceMatcher(base, newtext);
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// get the opcodes from the SequenceMatcher instance
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// opcodes is a list of 3-tuples describing what changes should be made to the base text
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// in order to yield the new text
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var opcodes = sm.get_opcodes();
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var res=["",""];
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for (var idx = 0; idx < opcodes.length; idx++) {
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code = opcodes[idx];
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change = code[0];
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var b = code[1];
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var be = code[2];
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var n = code[3];
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var ne = code[4];
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if(newtext.charAt(newtext.length-1) !== "y"
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&& change != "equal"){
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res[0]=base.charAt(base.length-1);
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res[1]=newtext.charAt(newtext.length-1);
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}
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//else if(change == "insert") {
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// res=newtext.charAt(newtext.length-1);
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//}
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//else if(change == "delete") {
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// res="-";
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//}
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//}
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}
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return res;
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}
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