Version 1

[yaffs-website] / node_modules / underscore.string / wrap.js

diff --git a/node_modules/underscore.string/wrap.js b/node_modules/underscore.string/wrap.js
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+// Wrap
+// wraps a string by a certain width
+
+var makeString = require('./helper/makeString');
+
+module.exports = function wrap(str, options){
+       str = makeString(str);
+
+       options = options || {};
+
+       var width = options.width || 75;
+       var seperator = options.seperator || '\n';
+       var cut = options.cut || false;
+       var preserveSpaces = options.preserveSpaces || false;
+       var trailingSpaces = options.trailingSpaces || false;
+
+  var result;
+
+       if(width <= 0){
+               return str;
+       }
+
+       else if(!cut){
+
+               var words = str.split(" ");
+               var current_column = 0;
+               result = "";
+
+               while(words.length > 0){
+                       
+                       // if adding a space and the next word would cause this line to be longer than width...
+                       if(1 + words[0].length + current_column > width){
+                               //start a new line if this line is not already empty
+                               if(current_column > 0){
+                                       // add a space at the end of the line is preserveSpaces is true
+                                       if (preserveSpaces){
+                                               result += ' ';
+                                               current_column++;
+                                       }
+                                       // fill the rest of the line with spaces if trailingSpaces option is true
+                                       else if(trailingSpaces){
+                                               while(current_column < width){
+                                                       result += ' ';
+                                                       current_column++;
+                                               }                                               
+                                       }
+                                       //start new line
+                                       result += seperator;
+                                       current_column = 0;
+                               }
+                       }
+
+                       // if not at the begining of the line, add a space in front of the word
+                       if(current_column > 0){
+                               result += " ";
+                               current_column++;
+                       }
+
+                       // tack on the next word, update current column, a pop words array
+                       result += words[0];
+                       current_column += words[0].length;
+                       words.shift();
+
+               }
+
+               // fill the rest of the line with spaces if trailingSpaces option is true
+               if(trailingSpaces){
+                       while(current_column < width){
+                               result += ' ';
+                               current_column++;
+                       }                                               
+               }
+
+               return result;
+
+       }
+
+       else {
+
+               var index = 0;
+               result = "";
+
+               // walk through each character and add seperators where appropriate
+               while(index < str.length){
+                       if(index % width == 0 && index > 0){
+                               result += seperator;
+                       }
+                       result += str.charAt(index);
+                       index++;
+               }
+
+               // fill the rest of the line with spaces if trailingSpaces option is true
+               if(trailingSpaces){
+                       while(index % width > 0){
+                               result += ' ';
+                               index++;
+                       }                                               
+               }
+               
+               return result;
+       }
+};