From b53f5995969554211dde0b235c648f8d2e1cb0a6 Mon Sep 17 00:00:00 2001
From: Panu Matilainen <pmatilai@redhat.com>
Date: Wed, 30 Sep 2009 12:11:43 +0300
Subject: [PATCH] Turn hdrGetHeader() into argument parsing converter interface

---
 python/header-py.c | 12 +++++++++---
 python/header-py.h |  2 +-
 python/rpmds-py.c  | 13 +++++++------
 python/rpmfi-py.c  |  8 ++++----
 python/rpmts-py.c  |  8 ++++----
 5 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/python/header-py.c b/python/header-py.c
index af7c1cd..32ec7bd 100644
--- a/python/header-py.c
+++ b/python/header-py.c
@@ -378,7 +378,7 @@ static PyObject *hdr_new(PyTypeObject *subtype, PyObject *args, PyObject *kwds)
     if (obj == NULL) {
 	h = headerNew();
     } else if (hdrObject_Check(obj)) {
-	h = headerCopy(hdrGetHeader((hdrObject*) obj));
+	h = headerCopy(((hdrObject*) obj)->h);
     } else if (PyString_Check(obj)) {
 	h = headerCopyLoad(PyString_AsString(obj));
     } else if (rpmFdFromPyObject(obj, &fd)) {
@@ -527,9 +527,15 @@ PyObject * hdr_Wrap(PyTypeObject *subtype, Header h)
     return (PyObject *) hdr;
 }
 
-Header hdrGetHeader(hdrObject * s)
+int hdrFromPyObject(PyObject *item, Header *hptr)
 {
-    return s->h;
+    if (hdrObject_Check(item)) {
+	*hptr = ((hdrObject *) item)->h;
+	return 1;
+    } else {
+	PyErr_SetString(PyExc_TypeError, "header object expected");
+	return 0;
+    }
 }
 
 /**
diff --git a/python/header-py.h b/python/header-py.h
index faebc48..ad16e01 100644
--- a/python/header-py.h
+++ b/python/header-py.h
@@ -18,7 +18,7 @@ extern PyObject * pyrpmError;
 
 PyObject * hdr_Wrap(PyTypeObject *subtype, Header h);
 
-Header hdrGetHeader(hdrObject * h);
+int hdrFromPyObject(PyObject *item, Header *h);
 
 int tagNumFromPyObject (PyObject *item, rpmTag *tagp);
 
diff --git a/python/rpmds-py.c b/python/rpmds-py.c
index ab227c4..67904ba 100644
--- a/python/rpmds-py.c
+++ b/python/rpmds-py.c
@@ -418,17 +418,17 @@ static int rpmds_init(rpmdsObject * s, PyObject *args, PyObject *kwds)
 
 static PyObject * rpmds_new(PyTypeObject * subtype, PyObject *args, PyObject *kwds)
 {
-    hdrObject * ho = NULL;
+    Header h = NULL;
     rpmTag tagN = RPMTAG_REQUIRENAME;
     rpmsenseFlags flags = 0;
     rpmds ds = NULL;
     char * kwlist[] = {"header", "tag", "flags", NULL};
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!|O&i:rpmds_new", kwlist, 
-	    &hdr_Type, &ho, tagNumFromPyObject, &tagN, &flags))
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|O&i:rpmds_new", kwlist, 
+	    	hdrFromPyObject, &h, tagNumFromPyObject, &tagN, &flags))
 	return NULL;
 
-    ds = rpmdsNew(hdrGetHeader(ho), tagN, 0);
+    ds = rpmdsNew(h, tagN, 0);
 
     return rpmds_Wrap(subtype, ds);
 }
@@ -523,9 +523,10 @@ PyObject * hdr_dsFromHeader(PyObject * s, PyObject * args, PyObject * kwds)
 
 PyObject * hdr_dsOfHeader(PyObject * s)
 {
-    hdrObject * ho = (hdrObject *)s;
+    Header h = NULL;
     rpmTag tagN = RPMTAG_PROVIDENAME;
     rpmsenseFlags Flags = RPMSENSE_EQUAL;
+    if (!hdrFromPyObject(s, &h)) return NULL;
 
-    return rpmds_Wrap(&rpmds_Type, rpmdsThis(hdrGetHeader(ho), tagN, Flags));
+    return rpmds_Wrap(&rpmds_Type, rpmdsThis(h, tagN, Flags));
 }
diff --git a/python/rpmfi-py.c b/python/rpmfi-py.c
index ee20904..6d034db 100644
--- a/python/rpmfi-py.c
+++ b/python/rpmfi-py.c
@@ -296,18 +296,18 @@ static int rpmfi_init(rpmfiObject * s, PyObject *args, PyObject *kwds)
 
 static PyObject * rpmfi_new(PyTypeObject * subtype, PyObject *args, PyObject *kwds)
 {
-    hdrObject * ho = NULL;
     PyObject * to = NULL;
+    Header h = NULL;
     rpmfi fi = NULL;
     rpmTag tagN = RPMTAG_BASENAMES;
     int flags = 0;
     char * kwlist[] = {"header", "tag", "flags", NULL};
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!|Oi:rpmfi_init", kwlist,
-	    &hdr_Type, &ho, &to, &flags))
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|Oi:rpmfi_init", kwlist,
+				hdrFromPyObject, &h, &to, &flags))
 	return NULL;
 
-    fi = rpmfiNew(NULL, hdrGetHeader(ho), tagN, flags);
+    fi = rpmfiNew(NULL, h, tagN, flags);
 
     return rpmfi_Wrap(subtype, fi);
 }
diff --git a/python/rpmts-py.c b/python/rpmts-py.c
index 59605e9..5c38485 100644
--- a/python/rpmts-py.c
+++ b/python/rpmts-py.c
@@ -173,15 +173,15 @@ static void die(PyObject *cb)
 static PyObject *
 rpmts_AddInstall(rpmtsObject * s, PyObject * args, PyObject * kwds)
 {
-    hdrObject * h;
+    Header h = NULL;
     PyObject * key;
     char * how = "u";	/* XXX default to upgrade element if missing */
     int isUpgrade = 0;
     char * kwlist[] = {"header", "key", "how", NULL};
     int rc = 0;
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!O|s:AddInstall", kwlist,
-    	    &hdr_Type, &h, &key, &how))
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&O|s:AddInstall", kwlist,
+    	    hdrFromPyObject, &h, &key, &how))
 	return NULL;
 
     if (how && !rstreq(how, "u") && !rstreq(how, "i")) {
@@ -190,7 +190,7 @@ rpmts_AddInstall(rpmtsObject * s, PyObject * args, PyObject * kwds)
     } else if (how && rstreq(how, "u"))
     	isUpgrade = 1;
 
-    rc = rpmtsAddInstallElement(s->ts, hdrGetHeader(h), key, isUpgrade, NULL);
+    rc = rpmtsAddInstallElement(s->ts, h, key, isUpgrade, NULL);
     if (rc) {
 	PyErr_SetString(pyrpmError, "adding package to transaction failed");
 	return NULL;
-- 
2.7.4