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// Collection of convenient string related functions (strings.js)
HashOverConstructor.prototype.strings = {
// sprintf specifiers regular expression
specifiers: /%([cdfs])/g,
// Curly-brace variable regular expression
curlyBraces: /(\{\{.+?\}\})/g,
// Curly-brace variable name regular expression
curlyNames: /\{\{(.+?)\}\}/,
// Simplistic JavaScript port of sprintf function in C
sprintf: function (string, args)
{
var string = string || '';
var args = args || [];
var count = 0;
// Replace specifiers with array items
return string.replace (this.specifiers, function (match, type)
{
// Return the original specifier if there isn't an item for it
if (args[count] === undefined) {
return match;
}
// Switch through each specific type
switch (type) {
// Single characters
case 'c': {
// Use only the first character
return args[count++][0];
}
// Integer numbers
case 'd': {
// Parse item as integer
return parseInt (args[count++]);
}
// Floating point numbers
case 'f': {
// Parse item as float
return parseFloat (args[count++]);
}
// Strings
case 's': {
// Use string as-is
return args[count++];
}
}
});
},
templatify: function (text)
{
var template = text.split (this.curlyBraces);
var indexes = {};
for (var i = 0, il = template.length, curly, name; i < il; i++) {
curly = template[i].match (this.curlyNames);
if (curly && curly.length > 0) {
name = curly[1];
template[i] = '';
if (indexes[name] !== undefined) {
indexes[name].push (i);
} else {
indexes[name] = [ i ];
}
}
}
return {
text: template,
indexes: indexes
}
},
// Parses an HTML template
parseTemplate: function (template, data)
{
if (!template || !template.indexes || !template.text) {
return;
}
var textClone = template.text.slice ();
for (var name in data) {
if (template.indexes[name] === undefined) {
continue;
}
for (var i = 0, il = template.indexes[name].length, index; i < il; i++) {
index = template.indexes[name][i];
textClone[index] = data[name];
}
}
return textClone.join ('');
}
};
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