* psycopg/lobject*: const'ify the code.

4 files changed, 15 insertions, 11 deletions

diff --git a/ChangeLog b/ChangeLog
index 9c13255..d755d18 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2008-05-06  James Henstridge  <james@jamesh.id.au>
 
+	* psycopg/lobject*: const'ify the code.
+
 	* tests/test_lobject.py (LargeObjectTests): add more tests,
 	including behaviour on closed lobjects and stale lobjects.
 
diff --git a/psycopg/lobject.h b/psycopg/lobject.h
index 9f6bce3..d6dd979 100644
--- a/psycopg/lobject.h
+++ b/psycopg/lobject.h
@@ -42,7 +42,7 @@ typedef struct {
 
     int closed;              /* 1 if the lobject is closed */
     int mode;                /* numeric mode, tells if lobject was opened */
-    char *smode;             /* string mode if lobject was opened */
+    const char *smode;       /* string mode if lobject was opened */
 
     long int mark;           /* copied from conn->mark */
 
@@ -53,12 +53,14 @@ typedef struct {
 /* functions exported from lobject_int.c */
 
 HIDDEN int lobject_open(lobjectObject *self, connectionObject *conn,
-                         Oid oid, int mode, Oid new_oid, char *new_file);
+                        Oid oid, int mode, Oid new_oid,
+                        const char *new_file);
 HIDDEN int lobject_unlink(lobjectObject *self);
-HIDDEN int lobject_export(lobjectObject *self, char *filename);
+HIDDEN int lobject_export(lobjectObject *self, const char *filename);
 
 HIDDEN Py_ssize_t lobject_read(lobjectObject *self, char *buf, size_t len);
-HIDDEN Py_ssize_t lobject_write(lobjectObject *self, char *buf, size_t len);
+HIDDEN Py_ssize_t lobject_write(lobjectObject *self, const char *buf,
+                                size_t len);
 HIDDEN int lobject_seek(lobjectObject *self, int pos, int whence);
 HIDDEN int lobject_tell(lobjectObject *self);
 HIDDEN int lobject_close(lobjectObject *self);
diff --git a/psycopg/lobject_int.c b/psycopg/lobject_int.c
index 476f236..13f30bd 100644
--- a/psycopg/lobject_int.c
+++ b/psycopg/lobject_int.c
@@ -45,7 +45,7 @@ collect_error(connectionObject *conn, char **error)
 
 int
 lobject_open(lobjectObject *self, connectionObject *conn,
-              Oid oid, int mode, Oid new_oid, char *new_file)
+              Oid oid, int mode, Oid new_oid, const char *new_file)
 {
     int retvalue = -1;
     PGresult *pgres = NULL;
@@ -198,7 +198,7 @@ lobject_unlink(lobjectObject *self)
 /* lobject_write - write bytes to a lo */
 
 Py_ssize_t
-lobject_write(lobjectObject *self, char *buf, size_t len)
+lobject_write(lobjectObject *self, const char *buf, size_t len)
 {
     Py_ssize_t written;
     PGresult *pgres = NULL;
@@ -301,7 +301,7 @@ lobject_tell(lobjectObject *self)
 /* lobject_export - export to a local file */
 
 int
-lobject_export(lobjectObject *self, char *filename)
+lobject_export(lobjectObject *self, const char *filename)
 {
     PGresult *pgres = NULL;
     char *error = NULL;
diff --git a/psycopg/lobject_type.c b/psycopg/lobject_type.c
index 690e4b6..e191bdf 100644
--- a/psycopg/lobject_type.c
+++ b/psycopg/lobject_type.c
@@ -74,7 +74,7 @@ static PyObject *
 psyco_lobj_write(lobjectObject *self, PyObject *args)
 {
     int len, res=0;
-    char *buffer;
+    const char *buffer;
 
     if (!PyArg_ParseTuple(args, "s#", &buffer, &len)) return NULL;
 
@@ -191,7 +191,7 @@ psyco_lobj_unlink(lobjectObject *self, PyObject *args)
 static PyObject *
 psyco_lobj_export(lobjectObject *self, PyObject *args)
 {
-    char *filename;
+    const char *filename;
 
     if (!PyArg_ParseTuple(args, "s", &filename))
     	return NULL;
@@ -244,7 +244,7 @@ static struct PyMemberDef lobjectObject_members[] = {
 
 static int
 lobject_setup(lobjectObject *self, connectionObject *conn,
-              Oid oid, int mode, Oid new_oid, char *new_file)
+              Oid oid, int mode, Oid new_oid, const char *new_file)
 {
     Dprintf("lobject_setup: init lobject object at %p", self);
 
@@ -292,7 +292,7 @@ lobject_init(PyObject *obj, PyObject *args, PyObject *kwds)
 {
     Oid oid=InvalidOid, new_oid=InvalidOid;
     int mode=0;
-    char *new_file = NULL;
+    const char *new_file = NULL;
     PyObject *conn;
 
     if (!PyArg_ParseTuple(args, "O|iiis",