Interface to TextEdit toolbox

Mac/Modules/te/tesupport.py

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+# This script generates a Python interface for an Apple Macintosh Manager.
+# It uses the "bgen" package to generate C code.
+# The function specifications are generated by scanning the mamager's header file,
+# using the "scantools" package (customized for this particular manager).
+
+import string
+
+# Declarations that change for each manager
+MACHEADERFILE = 'TextEdit.h'		# The Apple header file
+MODNAME = 'TE'				# The name of the module
+OBJECTNAME = 'TE'			# The basic name of the objects used here
+KIND = 'Handle'				# Usually 'Ptr' or 'Handle'
+
+# The following is *usually* unchanged but may still require tuning
+MODPREFIX = MODNAME			# The prefix for module-wide routines
+OBJECTTYPE = "TEHandle"		# The C type used to represent them
+OBJECTPREFIX = MODPREFIX + 'Obj'	# The prefix for object methods
+INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
+OUTPUTFILE = MODNAME + "module.c"	# The file generated by this program
+
+from macsupport import *
+
+# Create the type objects
+TEHandle = OpaqueByValueType("TEHandle", "TEObj")
+CharsHandle = OpaqueByValueType("CharsHandle", "ResObj")
+##Handle = OpaqueByValueType("Handle", "ResObj")
+StScrpHandle = OpaqueByValueType("StScrpHandle", "ResObj")
+TEStyleHandle = OpaqueByValueType("TEStyleHandle", "ResObj")
+RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
+
+TextStyle = OpaqueType("TextStyle", "TextStyle")
+TextStyle_ptr = TextStyle
+
+includestuff = includestuff + """
+#include <%s>""" % MACHEADERFILE + """
+
+/* Exported by Qdmodule.c: */
+extern PyObject *QdRGB_New(RGBColor *);
+extern int QdRGB_Convert(PyObject *, RGBColor *);
+
+/*
+** Parse/generate TextStyle records
+*/
+PyObject *TextStyle_New(itself)
+	TextStylePtr itself;
+{
+
+	return Py_BuildValue("lllO&", (long)itself->tsFont, (long)itself->tsFace, (long)itself->tsSize, QdRGB_New,
+				&itself->tsColor);
+}
+
+TextStyle_Convert(v, p_itself)
+	PyObject *v;
+	TextStylePtr p_itself;
+{
+	long font, face, size;
+	
+	if( !PyArg_ParseTuple(v, "lllO&", &font, &face, &size, QdRGB_Convert, &p_itself->tsColor) )
+		return 0;
+	p_itself->tsFont = (short)font;
+	p_itself->tsFace = (Style)face;
+	p_itself->tsSize = (short)size;
+	return 1;
+}
+"""
+
+class TEMethodGenerator(OSErrMethodGenerator):
+	"""Similar to MethodGenerator, but has self as last argument"""
+
+	def parseArgumentList(self, args):
+		args, a0 = args[:-1], args[-1]
+		t0, n0, m0 = a0
+		if m0 != InMode:
+			raise ValueError, "method's 'self' must be 'InMode'"
+		self.itself = Variable(t0, "_self->ob_itself", SelfMode)
+		FunctionGenerator.parseArgumentList(self, args)
+		self.argumentList.append(self.itself)
+
+
+
+class MyObjectDefinition(GlobalObjectDefinition):
+	def outputCheckNewArg(self):
+		Output("""if (itself == NULL) {
+					PyErr_SetString(TE_Error,"Cannot create null TE");
+					return NULL;
+				}""")
+	def outputFreeIt(self, itselfname):
+		Output("TEDispose(%s);", itselfname)
+
+# From here on it's basically all boiler plate...
+
+# Create the generator groups and link them
+module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
+object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
+module.addobject(object)
+
+# Create the generator classes used to populate the lists
+Function = OSErrFunctionGenerator
+Method = TEMethodGenerator
+
+# Create and populate the lists
+functions = []
+methods = []
+execfile(INPUTFILE)
+
+# add the populated lists to the generator groups
+# (in a different wordl the scan program would generate this)
+for f in functions: module.add(f)
+for f in methods: object.add(f)
+
+# generate output (open the output file as late as possible)
+SetOutputFileName(OUTPUTFILE)
+module.generate()
+