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added buffer_get_chunk_tobuf() which copies some chunk from one buffer to the other without a temporary variable

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git@daemon.de
2014-02-26 15:27:53 +01:00
parent 0069d6ea29
commit 504ff55a00
3 changed files with 27 additions and 580 deletions
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14
libpcp/buffer.c
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@@ -136,6 +136,20 @@ size_t buffer_get_chunk(Buffer *b, void *buf, size_t len) {
return len;
}
size_t buffer_get_chunk_tobuf(Buffer *b, Buffer *dst, size_t len) {
if(len > b->end - b->offset || len == 0) {
fatal("[buffer %s] attempt to read %ld bytes data from buffer with %ld bytes left at offset %ld\n",
b->name, len, b->end - b->offset, b->offset);
return 0;
}
buffer_resize(dst, len);
memcpy(dst->buf+buffer_size(dst), b->buf + b->offset, len);
b->offset += len;
dst->end += len;
return len;
}
byte *buffer_get_remainder(Buffer *b) {
void *buf = ucmalloc(b->end - b->offset);
if(buffer_get_chunk(b, buf, b->end - b->offset) == 0) {