Added JS generation with emscripten.

Some work left to make sure non-ascii text isn't decompressed
to mojibake.

Makefile

@@ -1,3 +1,4 @@
+CC=clang
 FLAGS=$(CFLAGS) -std=c99 -O3 -Wall
 SOURCES=shoco.c
 OBJECTS=$(SOURCES:.c=.o)
@@ -49,3 +50,9 @@ tests: tests.o $(OBJECTS) $(HEADERS)
 .PHONY: clean
 clean:
 	rm *.o
+
+.PHONY: js
+js: shoco.js
+
+shoco.js: $(OBJECTS) $(HEADERS)
+	emcc shoco.c -O3 -o $@ --closure 1 -s EXPORTED_FUNCTIONS="['_shoco_compress', '_shoco_decompress']" --pre-js pre.js

README.md

@@ -150,7 +150,7 @@ If you use _shoco_, or like it for whatever reason, I'd really love to hear from
 License
 -------
 
-_shoco_ is published under the MIT license; see the LICENSE file for details.
+_shoco_ is published under the MIT license; see the [LICENSE](LICENSE) file for details.
 
 Authors
 -------

pre.js

@@ -0,0 +1,32 @@
+var Module = {
+  'preRun': function() {
+    var _shoco_compress = Module['cwrap']('shoco_compress', 'number', ['string', 'number', 'number', 'number']);
+    var _shoco_decompress = Module['cwrap']('shoco_decompress', 'number', ['number', 'number', 'number', 'number']);
+
+    window['shoco'] = {
+      'compress': function(str_in) {
+        var out_heap = Module['_malloc'](str_in.length * 8);
+        var out_buffer = new Uint8Array(Module['HEAPU8']['buffer'], out_heap, str_in.length * 8);
+        var ret = _shoco_compress(str_in, 0, out_buffer.byteOffset, out_buffer.byteLength);
+        var result = new Uint8Array(out_buffer.subarray(0, ret));
+        Module['_free'](out_buffer.byteOffset);
+        return result;
+      },
+      'decompress': function(cmp) {
+        var out_heap = Module['_malloc'](cmp.length * 8);
+        var out_buffer = new Uint8Array(Module['HEAPU8']['buffer'], out_heap, cmp.length * 8);
+        var in_heap = Module['_malloc'](cmp.byteLength);
+        var in_buffer = new Uint8Array(Module['HEAPU8']['buffer'], in_heap, cmp.byteLength);
+        in_buffer.set(new Uint8Array(cmp.buffer));
+        var len = _shoco_decompress(in_buffer.byteOffset, cmp.byteLength, out_buffer.byteOffset, out_buffer.byteLength);
+        result = String.fromCharCode.apply(null, out_buffer.subarray(0, len));
+        Module['_free'](in_buffer.byteOffset);
+        Module['_free'](out_buffer.byteOffset);
+        return result;
+      }
+    }
+
+    if (typeof module !== "undefined")
+      module.exports = window['shoco'];
+  }
+};