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/* _______ ____ __ ___ ___
* \ _ \ \ / \ / \ \ / / ' ' '
* | | \ \ | | || | \/ | . .
* | | | | | | || ||\ /| |
* | | | | | | || || \/ | | ' ' '
* | | | | | | || || | | . .
* | |_/ / \ \__// || | |
* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
* / \
* / . \
* readduh.c - Code to read a DUH from an open / / \ \
* file. | < / \_
* | \/ /\ /
* By entheh. \_ / > /
* | \ / /
* | ' /
* \__/
*/
#include <stdlib.h>
#include "dumb.h"
#include "internal/dumb.h"
static DUH_SIGNAL *read_signal(DUH *duh, DUMBFILE *f)
{
DUH_SIGNAL *signal;
long type;
signal = malloc(sizeof(*signal));
if (!signal)
return NULL;
type = dumbfile_mgetl(f);
if (dumbfile_error(f)) {
free(signal);
return NULL;
}
signal->desc = _dumb_get_sigtype_desc(type);
if (!signal->desc) {
free(signal);
return NULL;
}
if (signal->desc->load_sigdata) {
signal->sigdata = (*signal->desc->load_sigdata)(duh, f);
if (!signal->sigdata) {
free(signal);
return NULL;
}
} else
signal->sigdata = NULL;
return signal;
}
/* read_duh(): reads a DUH from an already open DUMBFILE, and returns its
* pointer, or null on error. The file is not closed.
*/
DUH *read_duh(DUMBFILE *f)
{
DUH *duh;
int i;
if (dumbfile_mgetl(f) != DUH_SIGNATURE)
return NULL;
duh = malloc(sizeof(*duh));
if (!duh)
return NULL;
duh->length = dumbfile_igetl(f);
if (dumbfile_error(f) || duh->length <= 0) {
free(duh);
return NULL;
}
duh->n_signals = dumbfile_igetl(f);
if (dumbfile_error(f) || duh->n_signals <= 0) {
free(duh);
return NULL;
}
duh->signal = malloc(sizeof(*duh->signal) * duh->n_signals);
if (!duh->signal) {
free(duh);
return NULL;
}
for (i = 0; i < duh->n_signals; i++)
duh->signal[i] = NULL;
for (i = 0; i < duh->n_signals; i++) {
if (!(duh->signal[i] = read_signal(duh, f))) {
unload_duh(duh);
return NULL;
}
}
return duh;
}
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