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Add new bin_record() functions Implement them.

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2006-08-26  Soren Sandmann <sandmann@daimi.au.dk>

	* binparser.h: Add new bin_record() functions
	* binparser.c: Implement them.
This commit is contained in:
Soren Sandmann
2006-08-26 16:44:17 +00:00
committed by Søren Sandmann Pedersen
parent 62c86a1951
commit b569c3a34c
3 changed files with 132 additions and 49 deletions
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5
ChangeLog
View File

@ -1,3 +1,8 @@
2006-08-26 Soren Sandmann <sandmann@daimi.au.dk>
* binparser.h: Add new bin_record() functions
* binparser.c: Implement them.
2006-08-22 Soren Sandmann <sandmann@daimi.au.dk>
* collector.c (unique_dup): Demangle instead of strdup.

165
binparser.c
View File

@ -15,6 +15,14 @@ struct ParserFrame
ParserFrame * next;
};
struct BinRecord
{
BinFormat * format;
int index;
gsize offset;
BinParser * parser;
};
struct BinField
{
guint64 offset;
@ -165,16 +173,65 @@ get_field (BinFormat *format,
return NULL;
}
guint64
convert_uint (const guchar *data,
gboolean big_endian,
int width)
{
guint8 r8;
guint16 r16;
guint32 r32;
guint64 r64;
switch (width)
{
case 1:
r8 = *(guint8 *)data;
return r8;
case 2:
r16 = *(guint16 *)data;
if (big_endian)
r16 = GUINT16_FROM_BE (r16);
else
r16 = GUINT16_FROM_LE (r16);
return r16;
case 4:
r32 = *(guint32 *)data;
if (big_endian)
r32 = GUINT32_FROM_BE (r32);
else
r32 = GUINT32_FROM_LE (r32);
return r32;
case 8:
r64 = *(guint64 *)data;
if (big_endian)
r64 = GUINT64_FROM_BE (r64);
else
r64 = GUINT64_FROM_LE (r64);
return r64;
default:
g_assert_not_reached();
return 0;
}
}
guint64
bin_parser_get_uint (BinParser *parser,
const gchar *name)
{
const BinField *field;
const guint8 *pos;
guint8 r8;
guint16 r16;
guint32 r32;
guint64 r64;
BinFormat *format;
const guchar *data;
@ -194,51 +251,8 @@ bin_parser_get_uint (BinParser *parser,
/* FIXME: generate error */
return 0;
}
#if 0
g_print ("getting %s from offset: %llu\n", name, field->offset);
#endif
switch (field->width)
{
case 1:
r8 = *(guint8 *)pos;
return r8;
case 2:
r16 = *(guint16 *)pos;
if (format->big_endian)
r16 = GUINT16_FROM_BE (r16);
else
r16 = GUINT16_FROM_LE (r16);
return r16;
case 4:
r32 = *(guint32 *)pos;
if (format->big_endian)
r32 = GUINT32_FROM_BE (r32);
else
r32 = GUINT32_FROM_LE (r32);
return r32;
case 8:
r64 = *(guint64 *)pos;
if (format->big_endian)
r64 = GUINT64_FROM_BE (r64);
else
r64 = GUINT64_FROM_LE (r64);
return r64;
}
#if 0
g_print ("width: %d\n", field->width);
#endif
return convert_uint (pos, format->big_endian, field->width);
g_assert_not_reached();
return 0;
@ -345,6 +359,59 @@ bin_parser_get_length (BinParser *parser)
return parser->length;
}
/* Record */
BinRecord *
bin_parser_get_record (BinParser *parser,
BinFormat *format,
gsize offset)
{
BinRecord *record = g_new0 (BinRecord, 1);
record->parser = parser;
record->index = 0;
record->offset = offset;
record->format = format;
return record;
}
void
bin_record_free (BinRecord *record)
{
g_free (record);
}
guint64
bin_record_get_uint (BinRecord *record,
const char *name)
{
const guint8 *pos;
const BinField *field;
field = get_field (record->format, name);
pos = record->parser->data + record->offset + field->offset;
if (record->offset + field->offset + field->width > record->parser->length)
{
/* FIXME: generate error */
return 0;
}
return convert_uint (pos, record->format->big_endian, field->width);
}
void
bin_record_index (BinRecord *record,
int index)
{
gsize format_size = bin_format_get_size (record->format);
record->offset -= record->index * format_size;
record->offset += index * format_size;
record->index = index;
}
/* Fields */
BinField *
bin_field_new_fixed_array (int n_elements,
int element_size)

11
binparser.h
View File

@ -3,6 +3,7 @@
typedef struct BinField BinField;
typedef struct BinFormat BinFormat;
typedef struct BinParser BinParser;
typedef struct BinRecord BinRecord;
/* BinParser */
BinParser *bin_parser_new (const guchar *data,
@ -19,6 +20,16 @@ const char *bin_parser_get_string (BinParser *parser);
guint64 bin_parser_get_uint (BinParser *parser,
const gchar *name);
/* Record */
BinRecord *bin_parser_get_record (BinParser *parser,
BinFormat *format,
gsize offset);
void bin_record_free (BinRecord *record);
guint64 bin_record_get_uint (BinRecord *record,
const char *name);
void bin_record_index (BinRecord *record,
int index);
/* BinFormat */
BinFormat *bin_format_new (gboolean big_endian,
const char *name, BinField *field,