1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
//
// Copyright(C) 2005-2014 Simon Howard
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
//
// Dehacked "mapping" code
// Allows the fields in structures to be mapped out and accessed by
// name
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "doomtype.h"
#include "i_system.h"
#include "m_misc.h"
#include "deh_mapping.h"
static deh_mapping_entry_t *GetMappingEntryByName(deh_context_t *context,
deh_mapping_t *mapping,
char *name)
{
int i;
for (i=0; mapping->entries[i].name != NULL; ++i)
{
deh_mapping_entry_t *entry = &mapping->entries[i];
if (!strcasecmp(entry->name, name))
{
if (entry->location == NULL)
{
DEH_Warning(context, "Field '%s' is unsupported", name);
return NULL;
}
return entry;
}
}
// Not found.
DEH_Warning(context, "Field named '%s' not found", name);
return NULL;
}
//
// Get the location of the specified field in the specified structure.
//
static void *GetStructField(void *structptr,
deh_mapping_t *mapping,
deh_mapping_entry_t *entry)
{
unsigned int offset;
offset = (uint8_t *)entry->location - (uint8_t *)mapping->base;
return (uint8_t *)structptr + offset;
}
//
// Set the value of a particular field in a structure by name
//
boolean DEH_SetMapping(deh_context_t *context, deh_mapping_t *mapping,
void *structptr, char *name, int value)
{
deh_mapping_entry_t *entry;
void *location;
entry = GetMappingEntryByName(context, mapping, name);
if (entry == NULL)
{
return false;
}
// Sanity check:
if (entry->is_string)
{
DEH_Error(context, "Tried to set '%s' as integer (BUG)", name);
return false;
}
location = GetStructField(structptr, mapping, entry);
// printf("Setting %p::%s to %i (%i bytes)\n",
// structptr, name, value, entry->size);
// Set field content based on its type:
switch (entry->size)
{
case 1:
* ((uint8_t *) location) = value;
break;
case 2:
* ((uint16_t *) location) = value;
break;
case 4:
* ((uint32_t *) location) = value;
break;
default:
DEH_Error(context, "Unknown field type for '%s' (BUG)", name);
return false;
}
return true;
}
//
// Set the value of a string field in a structure by name
//
boolean DEH_SetStringMapping(deh_context_t *context, deh_mapping_t *mapping,
void *structptr, char *name, char *value)
{
deh_mapping_entry_t *entry;
void *location;
entry = GetMappingEntryByName(context, mapping, name);
if (entry == NULL)
{
return false;
}
// Sanity check:
if (!entry->is_string)
{
DEH_Error(context, "Tried to set '%s' as string (BUG)", name);
return false;
}
location = GetStructField(structptr, mapping, entry);
// Copy value into field:
M_StringCopy(location, value, entry->size);
return true;
}
void DEH_StructSHA1Sum(sha1_context_t *context, deh_mapping_t *mapping,
void *structptr)
{
int i;
// Go through each mapping
for (i=0; mapping->entries[i].name != NULL; ++i)
{
deh_mapping_entry_t *entry = &mapping->entries[i];
void *location;
if (entry->location == NULL)
{
// Unsupported field
continue;
}
// Add in data for this field
location = (uint8_t *)structptr + ((uint8_t *)entry->location - (uint8_t *)mapping->base);
switch (entry->size)
{
case 1:
SHA1_UpdateInt32(context, *((uint8_t *) location));
break;
case 2:
SHA1_UpdateInt32(context, *((uint16_t *) location));
break;
case 4:
SHA1_UpdateInt32(context, *((uint32_t *) location));
break;
default:
I_Error("Unknown dehacked mapping field type for '%s' (BUG)",
entry->name);
break;
}
}
}
|
