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Don't allow invalid encodings in StringDecoder class

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isaacs 2012-10-04 17:43:15 -07:00
parent 77ed12fe7a
commit 314c6b3060
1 changed files with 7 additions and 0 deletions
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7
lib/string_decoder.js
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@ -19,8 +19,15 @@
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE. // USE OR OTHER DEALINGS IN THE SOFTWARE.
function assertEncoding(encoding) {
if (encoding && !Buffer.isEncoding(encoding)) {
throw new Error('Unknown encoding: ' + encoding);
}
}
var StringDecoder = exports.StringDecoder = function(encoding) { var StringDecoder = exports.StringDecoder = function(encoding) {
this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, ''); this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
assertEncoding(encoding);
switch (this.encoding) { switch (this.encoding) {
case 'utf8': case 'utf8':
// CESU-8 represents each of Surrogate Pair by 3-bytes // CESU-8 represents each of Surrogate Pair by 3-bytes