Javascript snippet 1: Return the relative path from sourcefile to targetfile // Return the relative path from sourcefile to targetfile function getRelativePath(source, target) { /* returns the path to the target relative to the source @source=filename (with absolute path) of the source @target=filename (with absolute path) to the target algorithm: 1. strip out the common basedir of source and target 2 if no common basedir return the full target 3. find number of ../ from source to basedir 4. return #(../)+base_dir_stripped_target [rev0. 2014-03-27 by Rune Thorsen]
thanks to:https://gist.github.com/eriwen/1211656 for inspiration */ sep = (source.indexOf("/") !== -1) ? "/" : "\"; targetArr = target.split(sep); sourceArr = source.split(sep); if (targetArr[0]!=sourceArr[0]) { //NO common root return the full target return target; } //There is a common root, remove it while (targetArr[0]==sourceArr[0]) {//Strip common root if (sourceArr.length<=1) break; //if same file targetArr.shift(); //Remove first entry (targetArr[0]) } relativePath = ""; // Make step up string from source pos to common root for (var i=0;i<sourceArr.length-1;i++) { relativePath =relativePath+ ".." + sep; } res=relativePath+targetArr.join(sep);
return res;
} /------------TESTING------------ use the shell bookmark for Firefox http://www.squarefree.com/shell/shell.html source=document.URL; target="file:///C:/Pinko/Pallino/Notes/Test.htm"; r=getRelativePath(source, target); window.open(r) ------------------------/