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/* -*-Mode: C;-*-
* $Id: generic.c 1.1 Sun, 28 Jan 2007 10:02:26 -0800 jmacd $
*
* Copyright (C) 1998, 1999, Josh MacDonald.
* All Rights Reserved.
*
* Author: Josh MacDonald <jmacd@CS.Berkeley.EDU>
*/
#include "edsio.h"
/* Type-based selectors for unknown types
*/
typedef struct {
const char* name;
gboolean (*unserialize_func) ();
gboolean (*serialize_func) ();
guint (*count_func) ();
void (*print_func) ();
guint32 val;
} SerEntry;
static GArray *ser_array;
static gboolean ser_array_sorted;
void
serializeio_initialize_type (const char* name,
guint32 val,
gboolean (*unserialize_func) (),
gboolean (*serialize_func) (),
guint (*count_func) (),
void (*print_func) ())
{
SerEntry it;
it.name = name;
it.val = val;
it.unserialize_func = unserialize_func;
it.serialize_func = serialize_func;
it.count_func = count_func;
it.print_func = print_func;
if (ser_array == NULL)
ser_array = g_array_new (FALSE, TRUE, sizeof (SerEntry));
g_array_append_val (ser_array, it);
ser_array_sorted = FALSE;
}
static int
ser_entry_compare (const void* va, const void* vb)
{
SerEntry* a = (SerEntry*) va;
SerEntry* b = (SerEntry*) vb;
return a->val - b->val;
}
static SerEntry*
serializeio_find_entry (SerialType type)
{
if (! edsio_library_check (type & EDSIO_LIBRARY_OFFSET_MASK))
return NULL;
if (ser_array)
{
gint high_index = ser_array->len;
gint low_index = 0;
gint index;
gint this_val;
if (! ser_array_sorted)
{
ser_array_sorted = TRUE;
qsort (ser_array->data, ser_array->len, sizeof (SerEntry), ser_entry_compare);
}
again:
index = (low_index + high_index) / 2;
this_val = g_array_index (ser_array, SerEntry, index).val;
if (this_val < type)
{
low_index = index + 1;
goto again;
}
else if (this_val > type)
{
high_index = index - 1;
goto again;
}
else
{
return & g_array_index (ser_array, SerEntry, index);
}
}
edsio_generate_intint_event (EC_EdsioUnregisteredType,
type & EDSIO_LIBRARY_OFFSET_MASK,
type >> EDSIO_LIBRARY_OFFSET_BITS);
return NULL;
}
gboolean
serializeio_unserialize_generic_internal (SerialSource *source,
SerialType *object_type,
void **object,
gboolean set_allocation)
{
SerialType type = (* source->source_type) (source, set_allocation);
SerEntry* ent;
gboolean res = FALSE;
if (type < 0)
return FALSE;
ent = serializeio_find_entry (type);
(*object_type) = type;
if (ent)
{
res = ent->unserialize_func (source, object);
}
return res;
}
gboolean
serializeio_unserialize_generic (SerialSource *source,
SerialType *object_type,
void **object)
{
return serializeio_unserialize_generic_internal (source, object_type, object, TRUE);
}
gboolean
serializeio_serialize_generic (SerialSink *sink,
SerialType object_type,
void *object)
{
return serializeio_serialize_generic_internal (sink, object_type, object, TRUE);
}
gboolean
serializeio_serialize_generic_internal (SerialSink *sink,
SerialType object_type,
void *object,
gboolean set_allocation)
{
SerEntry* ent;
gboolean res = FALSE;
if (! (* sink->sink_type) (sink, object_type, set_allocation ? serializeio_generic_count (object_type, object) : 0, set_allocation))
return FALSE;
ent = serializeio_find_entry (object_type);
if (ent)
res = ent->serialize_func (sink, object);
return res;
}
const char*
serializeio_generic_type_to_string (SerialType type)
{
SerEntry* ent;
const char* res = "*Unknown*";
ent = serializeio_find_entry (type);
if (ent)
res = ent->name;
return res;
}
guint
serializeio_generic_count (SerialType object_type,
void *object)
{
SerEntry* ent;
gboolean res = FALSE;
ent = serializeio_find_entry (object_type);
if (ent)
res = ent->count_func (object);
return res;
}
void
serializeio_generic_print (SerialType type, void* object, guint indent_spaces)
{
SerEntry* ent;
ent = serializeio_find_entry (type);
if (ent)
ent->print_func (object, indent_spaces);
else
{
int i = 0;
for (; i < indent_spaces; i += 1)
g_print (" ");
g_print ("*Type Not Registered*\n");
}
}
gboolean
serializeio_unserialize_generic_acceptable (SerialSource *source,
guint32 accept,
SerialType *object_type,
void **object)
{
gboolean s;
s = serializeio_unserialize_generic (source, object_type, object);
if (s)
{
if (accept != -1)
{
if ((*object_type & EDSIO_LIBRARY_OFFSET_MASK) != (accept & EDSIO_LIBRARY_OFFSET_MASK))
{
edsio_generate_intint_event (EC_EdsioUnexpectedLibraryType,
accept & EDSIO_LIBRARY_OFFSET_MASK,
*object_type & EDSIO_LIBRARY_OFFSET_MASK);
return FALSE;
}
if (! ((*object_type & ~EDSIO_LIBRARY_OFFSET_MASK) |
(accept & ~EDSIO_LIBRARY_OFFSET_MASK)))
{
edsio_generate_void_event (EC_EdsioUnexpectedType);
return FALSE;
}
}
}
return s;
}
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