| // Library for wraping JavaScript code for different evaluation contexts. |
| |
| var libwrapjs = { |
| transform_each_character: function(str, transform) { |
| var result = new Array(); |
| for (var i=0; i < str.length; ++i) |
| result.push(transform(str.charAt(i))); |
| return result.join(''); |
| }, |
| |
| escape_for_single_quote: function(str) { |
| function transform(ch) { |
| if (ch == "\\") |
| return "\\\\"; |
| if (ch == "/") |
| return "\\/"; |
| if (ch == "'") |
| return "\\'"; |
| return ch; |
| } |
| return this.transform_each_character(str, transform); |
| }, |
| |
| escape_for_html: function(str) { |
| function transform(ch) { |
| if (ch == "<") |
| return "<"; |
| if (ch == ">") |
| return ">"; |
| if (ch == "&") |
| return "&"; |
| if (ch == "\n") |
| return "<br />" |
| if (ch == "\"") |
| return """; |
| return ch; |
| } |
| return this.transform_each_character(str, transform); |
| }, |
| |
| in_string: function(code) { |
| return "'" + this.escape_for_single_quote(code) + "'"; |
| }, |
| |
| in_script_tag: function(code) { |
| return "<script>" + code + "</scr" + "ipt>"; |
| }, |
| |
| in_document_write: function(code) { |
| return "document.write(" + this.in_string(this.in_script_tag(code)) + ")"; |
| }, |
| |
| in_javascript_url: function(code) { |
| return this.in_string("javascript:void(" + code + ")"); |
| }, |
| |
| in_javascript_document: function(code) { |
| return this.in_string("javascript:" + |
| this.in_string(this.in_script_tag(code))); |
| } |
| }; |
| |
