Fix bug 723 - "Missing QAbstractFileEngine.read and QAbstractFileEngine.readLine"

PySide/QtCore/typesystem_core.xml

@@ -2078,7 +2078,13 @@
         </inject-code>
     </add-function>
   </object-type>
-  <object-type name="QAbstractFileEngineHandler" />
+  <object-type name="QAbstractFileEngineHandler">
+      <modify-function signature="create(const QString&map;)const">
+        <modify-argument index="return">
+            <define-ownership owner="c++"/>
+        </modify-argument>
+      </modify-function>
+  </object-type>
   <!-- <object-type name="QAbstractFileEngine::MapExtensionOption" /> -->
   <!-- <object-type name="QAbstractFileEngine::MapExtensionReturn" /> -->
   <!-- <object-type name="QAbstractFileEngine::UnMapExtensionOption" /> -->
@@ -2121,10 +2127,52 @@
         </inject-code>
     </modify-function>
 
-    <!-- ### See bug 723 -->
+    <modify-function signature="read(char*, qint64)" allow-thread="yes">
-    <modify-function signature="read(char*, qint64)" allow-thread="yes" remove="all" />
+        <inject-code class="target">
-    <modify-function signature="readLine(char*, qint64)" allow-thread="yes" remove="all" />
+            QByteArray ba;
-    <!-- ### -->
+            ba.resize(%2);
+            %CPPSELF.%FUNCTION_NAME(ba.data(), ba.size());
+            %PYARG_0 = PyString_FromStringAndSize(ba.constData(), ba.size());
+        </inject-code>
+        <modify-argument index="1">
+            <remove-argument />
+        </modify-argument>
+        <modify-argument index="return">
+            <replace-type modified-type="PyObject"/>
+            <conversion-rule class="native">
+                %RETURN_TYPE %out;
+                if (!PyString_Check(%PYARG_0)) {
+                    %out = -1;
+                } else {
+                    %out = PyString_GET_SIZE((PyObject*)%PYARG_0);
+                    qstrncpy(%1, PyString_AS_STRING((PyObject*)%PYARG_0), %out + 1);
+                }
+            </conversion-rule>
+        </modify-argument>
+    </modify-function>
+    <modify-function signature="readLine(char*, qint64)" allow-thread="yes">
+        <inject-code class="target">
+            QByteArray ba;
+            ba.resize(%2);
+            %CPPSELF.%FUNCTION_NAME(ba.data(), ba.size());
+            %PYARG_0 = PyString_FromStringAndSize(ba.constData(), ba.size());
+        </inject-code>
+        <modify-argument index="1">
+            <remove-argument />
+        </modify-argument>
+        <modify-argument index="return">
+            <replace-type modified-type="PyObject"/>
+            <conversion-rule class="native">
+                %RETURN_TYPE %out;
+                if (!PyString_Check(%PYARG_0)) {
+                    %out = -1;
+                } else {
+                    %out = PyString_GET_SIZE((PyObject*)%PYARG_0);
+                    qstrncpy(%1, PyString_AS_STRING((PyObject*)%PYARG_0), %out + 1);
+                }
+            </conversion-rule>
+        </modify-argument>
+    </modify-function>
   </object-type>
   <object-type name="QProcess">
     <enum-type name="ExitStatus"/>

tests/QtCore/CMakeLists.txt

@@ -8,6 +8,7 @@ PYSIDE_TEST(bug_515.py)
 PYSIDE_TEST(bug_656.py)
 PYSIDE_TEST(bug_699.py)
 PYSIDE_TEST(bug_706.py)
+PYSIDE_TEST(bug_723.py)
 PYSIDE_TEST(bug_724.py)
 PYSIDE_TEST(blocking_signals_test.py)
 PYSIDE_TEST(child_event_test.py)

tests/QtCore/bug_723.py

@@ -0,0 +1,50 @@
+import unittest
+from PySide.QtCore import *
+
+class MyFileEngine (QAbstractFileEngine):
+
+    def __init__(self):
+        QAbstractFileEngine.__init__(self)
+        self.contents = "Foo bar for the win!"
+        self.pos = 0
+
+    def open(self, mode):
+        return True
+
+    def read(self, maxlen):
+        print "Reading... to return ", self.contents[self.pos:maxlen]
+
+        if self.pos > len(self.contents):
+            return -1
+
+        res = self.contents[self.pos:maxlen]
+        self.pos += len(res)
+        return res
+
+    def readLine(self, maxlen):
+        return self.contents[self.pos:maxlen]
+
+class MyFileEngineHandler (QAbstractFileEngineHandler):
+
+    def create(self, fileName):
+        print "hey ho: ", fileName
+        if fileName.startswith("foo:/"):
+            return MyFileEngine()
+        return None
+
+
+class TestBug723 (unittest.TestCase):
+
+    def testIt(self):
+        fh = MyFileEngineHandler()
+
+        f = QFile("foo:/bar")
+
+        assert(f.open(QFile.ReadOnly | QFile.Text))
+        contents = f.readAll()
+        self.assertEqual(contents, "Foo bar for the win!")
+        f.close()
+
+
+if __name__ == '__main__':
+    unittest.main()