char *buffer_prepare(buffer_t *buffer, size_t size) {
if(!buffer->data) {
+ assert(!buffer->maxlen);
+
buffer->maxlen = size;
buffer->data = xmalloc(size);
} else {
// Copy data into the buffer.
void buffer_add(buffer_t *buffer, const char *data, size_t size) {
+ assert(data);
+ assert(size);
+
memcpy(buffer_prepare(buffer, size), data, size);
}
// Remove given number of bytes from the buffer, return a pointer to the start of them.
static char *buffer_consume(buffer_t *buffer, size_t size) {
+ assert(size);
+ assert(buffer->len - buffer->offset >= size);
+
char *start = buffer->data + buffer->offset;
buffer->offset += size;
char *buffer_readline(buffer_t *buffer) {
char *newline = memchr(buffer->data + buffer->offset, '\n', buffer->len - buffer->offset);
- if(!newline)
+ if(!newline) {
return NULL;
+ }
size_t len = newline + 1 - (buffer->data + buffer->offset);
*newline = 0;
// Check if we have enough bytes in the buffer, and if so, return a pointer to the start of them.
char *buffer_read(buffer_t *buffer, size_t size) {
- if(buffer->len - buffer->offset < size)
+ assert(size);
+
+ if(buffer->len - buffer->offset < size) {
return NULL;
+ }
return buffer_consume(buffer, size);
}
void buffer_clear(buffer_t *buffer) {
+ assert(!buffer->data == !buffer->maxlen);
+
free(buffer->data);
buffer->data = NULL;
buffer->maxlen = 0;