dboolean M_BufferSetFile(buf_t *buf, const char *filename) {
FILE *fp = NULL;
size_t length = 0;
dboolean out = false;
if ((fp = fopen(filename, "rb")) == NULL)
return false;
fseek(fp, 0, SEEK_END);
length = ftell(fp);
fseek(fp, 0, SEEK_SET);
M_BufferClear(buf);
M_BufferEnsureTotalCapacity(buf, length);
if (fread(buf->data, sizeof(byte), length, fp) == length) {
buf->cursor = length;
buf->size = length;
out = true;
}
else {
M_BufferClear(buf);
out = false;
}
fclose(fp);
return out;
}
bool M_BufferMove(buf_t *buf, size_t dpos, size_t spos, size_t count) {
if ((spos + count) > M_BufferGetSize(buf))
return false;
M_BufferEnsureTotalCapacity(buf, dpos + count);
memmove(M_BufferGetData(buf) + dpos, M_BufferGetData(buf) + spos, count);
return true;
}
void M_BufferInitWithCapacity(buf_t *buf, size_t capacity) {
M_BufferInit(buf);
M_BufferEnsureTotalCapacity(buf, capacity);
}
void M_BufferSetData(buf_t *buf, const void *data, size_t size) {
M_BufferClear(buf);
M_BufferEnsureTotalCapacity(buf, size);
M_BufferWrite(buf, data, size);
}