Merge ssh://192.168.66.221/~vitor/Yap/yap-6.3

packages/python/kernel

@@ -0,0 +1,92 @@
+from __future__ import print_function
+
+from metakernel import MetaKernel
+
+from metakernel import register_ipython_magics
+register_ipython_magics()
+
+class MetaKernelyap(MetaKernel):
+    implementation = 'MetaKernel YAP'
+    implementation_version = '1.0'
+    language = 'text'
+    language_version = '0.1'
+    banner = "MetaKernel YAP"
+    language_info = {
+        'mimetype': 'text/plain',
+        'name': 'text',
+        # ------ If different from 'language':
+         'codemirror_mode': {
+            "version": 2,
+            "name": "prolog"
+         }
+         'pygments_lexer': 'language',
+         'version'       : "0.0.1",
+        'file_extension': '.yap',
+        'help_links': MetaKernel.help_links,
+    }
+
+    def __init__(self, **kwargs):
+
+        MetaKernel.__init__(self, **kwargs)
+        self._start_yap()
+        self.qq = None      sq
+
+    def _start_yap(self):
+        # Signal handlers are inherited by forked processes, and we can't easily
+        # reset it from the subprocess. Since kernelapp ignores SIGINT except in
+        # message handlers, we need to temporarily reset the SIGINT handler here
+        # so that yap and its children are interruptible.
+        sig = signal.signal(signal.SIGINT, signal.SIG_DFL)
+        try:
+            engine = yap.YAPEngine()
+            engine.query("load_files(library(python), [])").command()
+            banner = "YAP {0} Kernel".format(self.engine.version())
+
+        finally:
+            signal.signal(signal.SIGINT, sig)
+
+        # Register Yap function to write image data to temporary file
+        #self.yapwrapper.run_command(image_setup_cmd)
+
+    def get_usage(self):
+        return "This is the YAP kernel."
+
+    def do_execute_direct(self, code):
+    if not code.strip():
+        return {'status': 'ok', 'execution_count': self.execution_count,
+                'payload': [], 'user_expressions': {}}
+
+    interrupted = False
+    try:
+        print self.q
+        if self.q is None:
+          self.q = self.engine.query(code.rstrip())
+       if self.q.next():
+            vs = self.q.namedVars()
+            if vs.length() > 0:
+              l = []
+              while vs.length() > 0:
+                eq = vs.car()
+                l.append(' '.join([getArg(1).text(), '=', eq.getArg(2).text())
+                vs = vs.cdr()
+              l.append(';')
+              o = '\n'.join(l)
+            else:
+              return 'yes'
+              self.q = None
+
+        else:
+            return 'no'
+            self.q = None
+
+
+
+    def repr(self, data):
+        return repr(data)
+
+if __name__ == '__main__':
+    try:
+        from ipykernel.kernelapp import IPKernelApp
+    except ImportError:
+        from IPython.kernel.zmq.kernelapp import IPKernelApp
+    IPKernelApp.launch_instance(kernel_class=MetaKernelyap)