From 3caa05aa8e295d338be4bfbe7fdd2e825a59d947 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <jak@debian.org>
Date: Tue, 14 Apr 2009 22:14:10 +0200
Subject: * python/pkgsrcrecords.cc: Use GetSet properties for
 PkgSrcRecordsType

This time, it is a bit more complicated because we have to raise an
AttributeError when no package has been looked up.
---
 python/pkgsrcrecords.cc | 178 +++++++++++++++++++++++++++++++-----------------
 1 file changed, 117 insertions(+), 61 deletions(-)

(limited to 'python/pkgsrcrecords.cc')

diff --git a/python/pkgsrcrecords.cc b/python/pkgsrcrecords.cc
index f7f5d7a2..c830f8d2 100644
--- a/python/pkgsrcrecords.cc
+++ b/python/pkgsrcrecords.cc
@@ -75,71 +75,111 @@ static PyMethodDef PkgSrcRecordsMethods[] =
    {}
 };
 
-static PyObject *PkgSrcRecordsAttr(PyObject *Self,char *Name)
-{
+/**
+ * Get the PkgSrcRecordsStruct from a PyObject. If no package has been looked
+ * up, set an AttributeError using the given name.
+ */
+static inline PkgSrcRecordsStruct &GetStruct(PyObject *Self,char *name) {
    PkgSrcRecordsStruct &Struct = GetCpp<PkgSrcRecordsStruct>(Self);
+   if (Struct.Last == 0)
+      PyErr_SetString(PyExc_AttributeError,name);
+   return Struct;
+}
+
+static PyObject *PkgSrcRecordsGetPackage(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Package");
+   return (Struct.Last != 0) ? CppPyString(Struct.Last->Package()) : 0;
+}
+static PyObject *PkgSrcRecordsGetVersion(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Version");
+   return (Struct.Last != 0) ? CppPyString(Struct.Last->Version()) : 0;
+}
+static PyObject *PkgSrcRecordsGetMaintainer(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Maintainer");
+   return (Struct.Last != 0) ? CppPyString(Struct.Last->Maintainer()) : 0;
+}
+static PyObject *PkgSrcRecordsGetSection(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Section");
+   return (Struct.Last != 0) ? CppPyString(Struct.Last->Section()) : 0;
+}
+static PyObject *PkgSrcRecordsGetRecord(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Record");
+   return (Struct.Last != 0) ? CppPyString(Struct.Last->AsStr()) : 0;
+}
+static PyObject *PkgSrcRecordsGetBinaries(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Binaries");
+   if (Struct.Last == 0)
+      return 0;
+   PyObject *List = PyList_New(0);
+   for(const char **b = Struct.Last->Binaries(); *b != 0; ++b)
+      PyList_Append(List, CppPyString(*b));
+   return List; // todo
+}
+static PyObject *PkgSrcRecordsGetIndex(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Index");
+   if (Struct.Last == 0)
+      return 0;
+   const pkgIndexFile &tmp = Struct.Last->Index();
+   return CppOwnedPyObject_NEW<pkgIndexFile*>(Self,&PackageIndexFileType,
+                                              (pkgIndexFile*)&tmp);
+}
 
-   if (Struct.Last != 0)
-   {
-      if (strcmp("Package",Name) == 0)
-	 return CppPyString(Struct.Last->Package());
-      else if (strcmp("Version",Name) == 0)
-	 return CppPyString(Struct.Last->Version());
-      else if (strcmp("Maintainer",Name) == 0)
-	 return CppPyString(Struct.Last->Maintainer());
-      else if (strcmp("Section",Name) == 0)
-	 return CppPyString(Struct.Last->Section());
-      else if (strcmp("Record",Name) == 0)
-	 return CppPyString(Struct.Last->AsStr());
-      else if (strcmp("Binaries",Name) == 0) {
-         PyObject *List = PyList_New(0);
-
-         for(const char **b = Struct.Last->Binaries();
-             *b != 0;
-             ++b)
-            PyList_Append(List, CppPyString(*b));
-         return List; // todo
-      } else if (strcmp("Index",Name) == 0) {
-	 const pkgIndexFile &tmp = Struct.Last->Index();
-	 return CppOwnedPyObject_NEW<pkgIndexFile*>(Self,&PackageIndexFileType, (pkgIndexFile*)&tmp);
-      } else if (strcmp("Files",Name) == 0) {
-         PyObject *List = PyList_New(0);
-
-         vector<pkgSrcRecords::File> f;
-	 if(!Struct.Last->Files(f))
-	    return NULL; // error
-
-	 PyObject *v;
-	 for(unsigned int i=0;i<f.size();i++) {
-	    v = Py_BuildValue("(siss)",
-			      f[i].MD5Hash.c_str(),
-			      f[i].Size,
-			      f[i].Path.c_str(),
-			      f[i].Type.c_str());
-	    PyList_Append(List, v);
-	    Py_DECREF(v);
-	 }
-         return List;
-      } else if (strcmp("BuildDepends",Name) == 0) {
-         PyObject *List = PyList_New(0);
-
-         vector<pkgSrcRecords::Parser::BuildDepRec> bd;
-	 if(!Struct.Last->BuildDepends(bd, false /* arch-only*/))
-	    return NULL; // error
-
-	 PyObject *v;
-	 for(unsigned int i=0;i<bd.size();i++) {
-	    v = Py_BuildValue("(ssii)", bd[i].Package.c_str(),
-			      bd[i].Version.c_str(), bd[i].Op, bd[i].Type);
-	    PyList_Append(List, v);
-	    Py_DECREF(v);
-	 }
-         return List;
-      }
+static PyObject *PkgSrcRecordsGetFiles(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"Files");
+   if (Struct.Last == 0)
+      return 0;
+   PyObject *List = PyList_New(0);
+
+   vector<pkgSrcRecords::File> f;
+   if(!Struct.Last->Files(f))
+      return NULL; // error
+
+   PyObject *v;
+   for(unsigned int i=0;i<f.size();i++) {
+      v = Py_BuildValue("(siss)",
+			f[i].MD5Hash.c_str(),
+			f[i].Size,
+			f[i].Path.c_str(),
+			f[i].Type.c_str());
+      PyList_Append(List, v);
+      Py_DECREF(v);
    }
+   return List;
+}
 
-   return Py_FindMethod(PkgSrcRecordsMethods,Self,Name);
+static PyObject *PkgSrcRecordsGetBuildDepends(PyObject *Self,void*) {
+   PkgSrcRecordsStruct &Struct = GetStruct(Self,"BuildDepends");
+   if (Struct.Last == 0)
+      return 0;
+   PyObject *List = PyList_New(0);
+
+   vector<pkgSrcRecords::Parser::BuildDepRec> bd;
+   if(!Struct.Last->BuildDepends(bd, false /* arch-only*/))
+      return NULL; // error
+
+   PyObject *v;
+   for(unsigned int i=0;i<bd.size();i++) {
+      v = Py_BuildValue("(ssii)", bd[i].Package.c_str(),
+			bd[i].Version.c_str(), bd[i].Op, bd[i].Type);
+      PyList_Append(List, v);
+      Py_DECREF(v);
+   }
+   return List;
 }
+
+static PyGetSetDef PkgSrcRecordsGetSet[] = {
+   {"Binaries",PkgSrcRecordsGetBinaries},
+   {"BuildDepends",PkgSrcRecordsGetBuildDepends},
+   {"Files",PkgSrcRecordsGetFiles},
+   {"Index",PkgSrcRecordsGetIndex},
+   {"Maintainer",PkgSrcRecordsGetMaintainer},
+   {"Package",PkgSrcRecordsGetPackage},
+   {"Record",PkgSrcRecordsGetRecord},
+   {"Section",PkgSrcRecordsGetSection},
+   {"Version",PkgSrcRecordsGetVersion},
+   {}
+};
+
 PyTypeObject PkgSrcRecordsType =
 {
    PyObject_HEAD_INIT(&PyType_Type)
@@ -150,7 +190,7 @@ PyTypeObject PkgSrcRecordsType =
    // Methods
    CppDealloc<PkgSrcRecordsStruct>,   // tp_dealloc
    0,                                   // tp_print
-   PkgSrcRecordsAttr,                      // tp_getattr
+   0,                                   // tp_getattr
    0,                                   // tp_setattr
    0,                                   // tp_compare
    0,                                   // tp_repr
@@ -158,6 +198,22 @@ PyTypeObject PkgSrcRecordsType =
    0,                                   // tp_as_sequence
    0,                                   // tp_as_mapping
    0,                                   // tp_hash
+   0,                                   // tp_call
+   0,                                   // tp_str
+   0,                                   // tp_getattro
+   0,                                   // tp_setattro
+   0,                                   // tp_as_buffer
+   Py_TPFLAGS_DEFAULT,                  // tp_flags
+   "SourceRecords Object",              // tp_doc
+   0,                                   // tp_traverse
+   0,                                   // tp_clear
+   0,                                   // tp_richcompare
+   0,                                   // tp_weaklistoffset
+   0,                                   // tp_iter
+   0,                                   // tp_iternext
+   PkgSrcRecordsMethods,                   // tp_methods
+   0,                                   // tp_members
+   PkgSrcRecordsGetSet,                    // tp_getset
 };
 
 									/*}}}*/
-- 
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