Drop dependency on node.js for compiling coffeescript

.bzrignore

@@ -15,6 +15,7 @@ resources/scripts.pickle
 resources/ebook-convert-complete.pickle
 resources/builtin_recipes.xml
 resources/builtin_recipes.zip
+resources/coffee-script.js.bz2
 resources/template-functions.json
 resources/display/*.js
 setup/installer/windows/calibre/build.log

src/calibre/utils/coffeescript.py

@@ -10,15 +10,68 @@ __docformat__ = 'restructuredtext en'
 '''
 Utilities to help with developing coffeescript based apps
 '''
-import time, SimpleHTTPServer, SocketServer, os, subprocess
+import time, SimpleHTTPServer, SocketServer, os, bz2, sys
 from io import BytesIO
 
+from PyQt4.QtWebKit import QWebPage
+
+try:
+    from calibre.gui2 import must_use_qt
+    must_use_qt
+except ImportError:
+    import init_calibre
+    init_calibre
+    from calibre.gui2 import must_use_qt
+from calibre import force_unicode
+from calibre.gui2 import FunctionDispatcher
+
+must_use_qt()
+
+class Compiler(QWebPage): # {{{
+
+    def __init__(self):
+        QWebPage.__init__(self)
+        self.frame = self.mainFrame()
+        self.filename = self._src = ''
+        compiler = bz2.decompress(P('coffee-script.js.bz2', data=True))
+        self.frame.evaluateJavaScript(compiler)
+        self.frame.addToJavaScriptWindowObject("cs_compiler", self)
+        self.dispatcher = FunctionDispatcher(self.__evalcs, parent=self)
+        self.errors = []
+
+    def shouldInterruptJavaScript(self):
+        return True
+
+    def javaScriptConsoleMessage(self, msg, lineno, sourceid):
+        sourceid = sourceid or self.filename or '<script>'
+        self.errors.append('%s:%s'%(sourceid, msg))
+
+    def __evalcs(self, raw, filename=None):
+        # This method is NOT thread safe
+        self.filename = filename
+        self.setProperty('source', raw)
+        self.errors = []
+        res = self.frame.evaluateJavaScript('''
+            raw = document.getElementById("raw");
+            raw = cs_compiler.source;
+            CoffeeScript.compile(raw);
+        ''')
+        ans = ''
+        if res.type() == res.String:
+            ans = unicode(res.toString())
+        return ans, self.errors
+
+    def __call__(self, raw, filename=None):
+        raw = force_unicode(raw)
+        return self.dispatcher(raw, filename=filename)
+# }}}
+
 # FAVICON {{{
 FAVICON = \
 b'\x00\x00\x01\x00\x01\x00\x00\x00\x00\x00\x01\x00 \x00\x9c\x04\x00\x00\x16\x00\x00\x00\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x10\x00\x00\x00\x10\x08\x03\x00\x00\x00(-\x0fS\x00\x00\x02IPLTE\x00\x00\x00888\x0c\x0c\x0c\x12\x12\x12\x1b\x1b\x1b\x16\x16\x16I\x00\x00J\x00\x00\x17\x17\x17\x14\x14\x14\x10\x10\x10$$$""" ##\x19\x1c\x1c\x02\x07\x07\x81\x06\x0eT\t\x0e\x08\x11\x10\x0e\x0e\x0e\x1e\x1e\x1e\t\t\t\x06\x06\x06\xae\x1c\x1d\xa5\x1d\x1e\x8b\x18\x19\x87\x15\x15,\x16\x16!\x14\x15KJJ\x1f\x1f\x1f\x1d\x1d\x1d333\x05\x05\x05\x04\x04\x04"\x02\x03\x0f\x00\x02\x13\x13\x13\x0f\x0f\x0f\x0c\x0c\x0c\x0c\x0c\x0c\x11\x11\x11\x11\x11\x11\x0f\x10\x10"\n\nR\x00\x00L\x00\x00\x1c\r\r\x12\x13\x13\x13\x16\x16$\x13\x136\x04\x07!\x1a\x14)\x1c\x118\x04\x04\x1f\x15\x15\x10\x14\x14\x1e\x1f#74\x1e\x7fn\x1c5.\x172+\x11|j\x12<:\'\x1e\x1f#\r\x14$_S\x11\x8a|.[N\x05UJ\x0e\x03\x0b\x1f$\n\x0cO\r\x0bL\t\x080\x13\x15\x07\x07\x07\x13\x1f\x1fd\x12\x17\xd2\x05\nl\x15\x1b\n\x1b\x1a$##\x08\x08\x08\x12\x14\x14*\x17\x19X\x1a\x1fw %\'\x16\x18\x12\x13\x13\x05\x05\x05\n\n\n\x00\x0e\r\x91\x17\x1c\\"#l#%\x9a\x17\x1d\x00\t\t\x08\x08\x08\xa4$%\xc5"#\xbb  \xa1#$\x8a&\'\xbe&&\xbc))\x83\x1d\x1d$\x18\x18w\x1e\x1fp\x1f\x1f\x1d\x13\x14\x1d\x1e\x1e8\x15\x18!\x07\x08)\t\n=\x14\x17\x19\x1b\x1b\x16\x16\x16\x15\x16\x16$\x0c\x0e9\x02\x04[\x00\x01T\x00\x01=\x02\x04+\x1c\x1d%%%\'\'\'\x01\x01\x01\x10\x10\x10\x16\x16\x16\x00\x05\x02H\x00\x04S\x01\x02Y\x05\x05F\x02\x03C\x00\x01I\x00\x03\n\x16\x15%%%###\x00\x00\x00\x08\x08\x08\n\n\n!\x01\x023\x08\t\x1e\x04\x04\x0e\x00\x00\x16\x16\x16\x1a\x1a\x1aXWR\x18\x17\x12R+#JG:-)\x1c9\x10\x0b\xd2\x03\x07\xdd4(`M7[E1\xd8\x1d\x14\xb2\x14\x14\xf1`ak?@`,-\xe1\x1b\x1c\x9c\x15\x15\xa3\r\r\xe1!"\xcb,,\xd623\xdc\x16\x16\x99\r\rq\n\n<\x0f\x0f\xa4\x0e\x0e\x92\x13\x131\x11\x11\x92\x08\x08x\x07\x07<\x08\x08\x9c\x03\x03~\x06\x06\x1e\x0b\x0b\x83\n\n\x89\x04\x04\xb3\x00\x00\xb5\x02\x02\xb7\x03\x03\x9b\x01\x01\x81\x08\x08w\x00\x00\x86\x02\x02\x85\x02\x02r\x01\x01[\x02\x02N\x02\x02WT>\xb4\x00\x00\x00\x94tRNS\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x12\x06\t\x112@\n\x10A*\x1al:22>h\x12%r\x90\xe8\xe5\x86v\x1b\x1a\xad\xf9\xf8\xa5\x120\xd5\xc5\x1e\x03.\xc5\xfc\xa8"\x02\x06E[\xd8\xcc[B\x04\x04\x11(\xe4\xde$\x16\x030\xeb\xe6\'#\xe2\xda\x1b:\xd3\xd7-Q|\xf7\xf3\x90U\x11p*\x9f\xfe\xfd\x96?m\t\x03=.\x01\x15\x83\xc7\xc6|\x12\x0665\x01\x01\n\x03\x11\x10\x02\x02\nEu\xb9r\x00\x00\x00\tpHYs\x00\x00\x00H\x00\x00\x00H\x00F\xc9k>\x00\x00\x00\xf7IDAT\x18\xd3c````T\xd7`b``\xd6\xd4ba\x80\x00Vm\x1d]6v=}\x03\x0e\xa8\x00\xa7\xa1\x91\xb1\x89\xa9\x99\xb9\x05\x17T\x80\xdb\xd2\xca\xda\xc6\xd6\xce\xde\x81\x07*\xc0\xeb\xe8\xe4<e\xaa\x8b\xab\x1b\x1f\x84\xcf/\xe0\xee1m\xfa\x8c\x99\x9e^\x82B \xbe\xb0\xb7\x8f\xef\xac\xd9s\xe6\xce\xf3\xf3\x0f\x08\x14a`\x10\r\n\x0e\t\x9d\xbf`\xe1\xa2\xc5K\xc2\xc2#"E\x19D\xa3\xa2cb\x97.[\xbeb\xe5\xaa\xb8\xf8\x84D1\xa0\x1e\xf1\xa4\xe4\xd5k\xd6\xae[\xbf!%U\x02l\xa8dZ\xfa\xc6M\x9b\xb7l\xdd\x96\x91)\x05\x16\x90\xce\xca\xde\xbec\xe7\xae\xdd{rre\xc0\x02\xb2y\xf9\x05{\xf7\xed?PXT,\x07\xe2\xcb\x97\x94\x96\x95W\x1c<TYU]S\xab\xc0\xc0\xa0XW\xdf\xd0\xd8\xd4\xdc\xd2\xda\xd6\xde\xd1\xd9\xd5\xad\xc4\xa0\xd8\xd3\xdb\xa3\xa4\xdc\xd7?a\xa2\x8a\xea\xa4\xc9j\x8a\x00W\xf7J\xfe\xc9Y\x97\xae\x00\x00\x00%tEXtdate:create\x002011-11-06T14:56:51+05:00t\xf3K\xf2\x00\x00\x00%tEXtdate:modify\x002011-11-06T14:56:51+05:00\x05\xae\xf3N\x00\x00\x00\x00IEND\xaeB`\x82'
 # }}}
 
-class Handler(SimpleHTTPServer.SimpleHTTPRequestHandler):
+class Handler(SimpleHTTPServer.SimpleHTTPRequestHandler): # {{{
 
     special_resources = {}
     compiled_cs = {}
@@ -67,15 +120,18 @@ class Handler(SimpleHTTPServer.SimpleHTTPRequestHandler):
         raw, mtime = self.compiled_cs.get(src, (None, 0))
         if self.newer(src, mtime):
             mtime = time.time()
-            try:
-                raw = subprocess.check_output(['coffee', '-c', '-p', src])
-            except:
+            with open(src, 'rb') as f:
+                raw = f.read()
+            cs, errors = compile_coffeescript(raw)
+            for line in errors:
+                print(line, file=sys.stderr)
+            if not cs:
                 print('Compilation of %s failed'%src)
                 cs = '''
                 // Compilation of coffeescript failed
                 alert("Compilation of %s failed");
                 '''%src
-                raw = cs.encode('utf-8')
+            raw = cs.encode('utf-8')
             self.compiled_cs[src] = (raw, mtime)
         return raw, mtime
 
@@ -90,4 +146,24 @@ def serve(resources={}, port=8000):
         httpd.serve_forever()
     except KeyboardInterrupt:
         raise SystemExit(0)
+# }}}
 
+compile_coffeescript = Compiler()
+
+def main():
+    import argparse
+    parser = argparse.ArgumentParser(description=
+            'Compile coffeescript to javascript and print to stdout. Errors '
+            'and warnings are printed to stderr.')
+    parser.add_argument('src', type=argparse.FileType('rb'),
+            metavar='path/to/script.coffee', help='The coffee script to compile. Use '
+            ' - for stdin')
+    args = parser.parse_args()
+    ans, errors = compile_coffeescript(args.src.read(), filename=args.src.name)
+    for line in errors:
+        print(line, file=sys.stderr)
+    if ans:
+        print (ans.encode(sys.stdout.encoding or 'utf-8'))
+
+if __name__ == '__main__':
+    main()

src/calibre/utils/localization.py

@@ -8,7 +8,6 @@ __docformat__ = 'restructuredtext en'
 
 import os, locale, re, cStringIO, cPickle
 from gettext import GNUTranslations, NullTranslations
-from zipfile import ZipFile
 
 _available_translations = None
 
@@ -79,6 +78,7 @@ def set_translators():
             buf = cStringIO.StringIO(buf.getvalue())
 
         if mpath is not None:
+            from zipfile import ZipFile
             with ZipFile(P('localization/locales.zip',
                 allow_user_override=False), 'r') as zf:
                 if buf is None: