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Add util functions to deal with ISO types.

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This commit is contained in:
Vreixo Formoso
2007-12-27 00:19:09 +01:00
parent bf51fba3bc
commit aae230a321
3 changed files with 107 additions and 30 deletions
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22
src/util.c
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@ -514,6 +514,28 @@ void iso_bb(uint8_t *buf, uint32_t num, int bytes)
iso_msb(buf+bytes, num, bytes);
}
uint32_t iso_read_lsb(const uint8_t *buf, int bytes)
{
int i;
uint32_t ret = 0;
for (i=0; i<bytes; i++) {
ret += ((uint32_t) buf[i]) << (i*8);
}
return ret;
}
uint32_t iso_read_msb(const uint8_t *buf, int bytes)
{
int i;
uint32_t ret = 0;
for (i=0; i<bytes; i++) {
ret += ((uint32_t) buf[bytes-i-1]) << (i*8);
}
return ret;
}
void iso_datetime_7(unsigned char *buf, time_t t)
{
static int tzsetup = 0;

3
src/util.h
View File

@ -93,6 +93,9 @@ void iso_lsb(uint8_t *buf, uint32_t num, int bytes);
void iso_msb(uint8_t *buf, uint32_t num, int bytes);
void iso_bb(uint8_t *buf, uint32_t num, int bytes);
uint32_t iso_read_lsb(const uint8_t *buf, int bytes);
uint32_t iso_read_msb(const uint8_t *buf, int bytes);
/** Records the date/time into a 7 byte buffer (ECMA-119, 9.1.5) */
void iso_datetime_7(uint8_t *buf, time_t t);