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Add String.startsWith and String.endsWith

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This commit is contained in:
Kovid Goyal 2015-06-24 03:48:39 +05:30
parent 22987bea12
commit c73d53f50a
1 changed files with 19 additions and 2 deletions
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21
src/duktape/__init__.py
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@ -111,7 +111,7 @@ class Context(object):
return this.replace(rtrim, ''); return this.replace(rtrim, '');
}; };
})(); })();
} };
if (!String.prototype.trimLeft) { if (!String.prototype.trimLeft) {
(function() { (function() {
// Make sure we trim BOM and NBSP // Make sure we trim BOM and NBSP
@ -120,7 +120,7 @@ class Context(object):
return this.replace(rtrim, ''); return this.replace(rtrim, '');
}; };
})(); })();
} };
if (!String.prototype.trimRight) { if (!String.prototype.trimRight) {
(function() { (function() {
// Make sure we trim BOM and NBSP // Make sure we trim BOM and NBSP
@ -129,6 +129,23 @@ class Context(object):
return this.replace(rtrim, ''); return this.replace(rtrim, '');
}; };
})(); })();
};
if (!String.prototype.startsWith) {
String.prototype.startsWith = function(searchString, position) {
position = position || 0;
return this.indexOf(searchString, position) === position;
};
}
if (!String.prototype.endsWith) {
String.prototype.endsWith = function(searchString, position) {
var subjectString = this.toString();
if (position === undefined || position > subjectString.length) {
position = subjectString.length;
}
position -= searchString.length;
var lastIndex = subjectString.indexOf(searchString, position);
return lastIndex !== -1 && lastIndex === position;
};
} }
Duktape.readfile = function(path, encoding) { Duktape.readfile = function(path, encoding) {
var x = Duktape.pyreadfile(path, encoding); var x = Duktape.pyreadfile(path, encoding);