skins/htmldump/lookup.js

   1 /**
   2  * "Go" function for static HTML dump
   3  */
   4 function goToStatic(depth) {
   5         var url = getStaticURL(document.getElementById("searchInput").value, depth);
   6         if (url != "") {
   7                 location = url;
   8         } else {
   9                 alert("Invalid title");
  10         }
  11 }
  12
  13 /**
  14  * Determine relative path for a given non-canonical title
  15  */
  16 function getStaticURL(text, depth) {
  17         var pdbk = getPDBK(text);
  18         if (pdbk == "") {
  19                 return "";
  20         } else {
  21                 var i;
  22                 var path = getHashedDirectory(pdbk, depth) + "/" + getFriendlyName(pdbk) + ".html";
  23                 if (!/(index\.html|\/)$/.exec(location)) {
  24                         for (i = 0; i < depth; i++) {
  25                                 path = "../" + path;
  26                         }
  27                 }
  28                 return path;
  29         }
  30 }
  31
  32 function getPDBK(text) {
  33         // Spaces to underscores
  34         text = text.replace(/ /g, "_");
  35
  36         // Trim leading and trailing space
  37         text = text.replace(/^_+/g, "");
  38         text = text.replace(/_+$/g, "");
  39
  40         // Capitalise first letter
  41         return ucfirst(text);
  42 }
  43
  44 function getHashedDirectory(pdbk, depth) {
  45         // Find the first colon if there is one, use characters after it
  46         var dbk = pdbk.replace(/^[^:]*:_*(.*)$/, "$1");
  47         var i, c, dir = "";
  48
  49         for (i=0; i < depth; i++) {
  50                 if (i) {
  51                         dir += "/";
  52                 }
  53                 if (i >= dbk.length) {
  54                         dir += "_";
  55                 } else {
  56                         c = dbk.charAt(i);
  57                         cc = dbk.charCodeAt(i);
  58
  59                         if (cc >= 128 || /[a-zA-Z0-9!#$%&()+,[\]^_`{}-]/.exec(c)) {
  60                                 dir += c.toLowerCase();
  61                         } else {
  62                                 dir += binl2hex([cc]).substr(0,2).toUpperCase();
  63                         }
  64                 }
  65         }
  66         return dir;
  67 }
  68
  69 function ucfirst(s) {
  70         return s.charAt(0).toUpperCase() + s.substring(1, s.length);
  71 }
  72
  73 function getFriendlyName(name) {
  74         // Replace illegal characters for Windows paths with underscores
  75         var friendlyName = name.replace(/[\/\\*?"<>|~]/g, "_");
  76
  77         // Work out lower case form. We assume we're on a system with case-insensitive
  78         // filenames, so unless the case is of a special form, we have to disambiguate
  79         var lowerCase = ucfirst(name.toLowerCase());
  80
  81         // Make it mostly unique
  82         if (lowerCase != friendlyName) {
  83                 friendlyName += "_" + hex_md5(_to_utf8(name)).substring(0, 4);
  84         }
  85         // Handle colon specially by replacing it with tilde
  86         // Thus we reduce the number of paths with hashes appended
  87         friendlyName = friendlyName.replace(":", "~");
  88
  89         return friendlyName;
  90 }
  91