X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=strbuf.h;h=4ce7dedee07efced23c1214de71e0687d7cb297a;hb=4584c94f0efb9c03b8e860622937d754076da3dc;hp=675a91f93821421aa79de51857b22a4960da8ec1;hpb=fa8f1ca2a4c4ab37cc322341d543885057b7957c;p=git.git diff --git a/strbuf.h b/strbuf.h index 675a91f93..4ce7dedee 100644 --- a/strbuf.h +++ b/strbuf.h @@ -1,42 +1,7 @@ #ifndef STRBUF_H #define STRBUF_H -/* - * Strbuf's can be use in many ways: as a byte array, or to store arbitrary - * long, overflow safe strings. - * - * Strbufs has some invariants that are very important to keep in mind: - * - * 1. the ->buf member is always malloc-ed, hence strbuf's can be used to - * build complex strings/buffers whose final size isn't easily known. - * - * It is NOT legal to copy the ->buf pointer away. - * `strbuf_detach' is the operation that detaches a buffer from its shell - * while keeping the shell valid wrt its invariants. - * - * 2. the ->buf member is a byte array that has at least ->len + 1 bytes - * allocated. The extra byte is used to store a '\0', allowing the ->buf - * member to be a valid C-string. Every strbuf function ensures this - * invariant is preserved. - * - * Note that it is OK to "play" with the buffer directly if you work it - * that way: - * - * strbuf_grow(sb, SOME_SIZE); - * ... Here, the memory array starting at sb->buf, and of length - * ... strbuf_avail(sb) is all yours, and you are sure that - * ... strbuf_avail(sb) is at least SOME_SIZE. - * strbuf_setlen(sb, sb->len + SOME_OTHER_SIZE); - * - * Of course, SOME_OTHER_SIZE must be smaller or equal to strbuf_avail(sb). - * - * Doing so is safe, though if it has to be done in many places, adding the - * missing API to the strbuf module is the way to go. - * - * XXX: do _not_ assume that the area that is yours is of size ->alloc - 1 - * even if it's true in the current implementation. Alloc is somehow a - * "private" member that should not be messed with. - */ +/* See Documentation/technical/api-strbuf.txt */ #include