From: René Scharfe Date: Sat, 10 Nov 2007 11:16:05 GMT Subject: [PATCH 2/3] add strbuf_adddup() Message-ID: <473592F5.2070407@lsrfire.ath.cx> In-Reply-To: <20071110004635.GA14992@sigill.intra.peff.net> Add a new function, strbuf_adddup(), that appends a duplicate of a part of a struct strbuf to end of the latter. Signed-off-by: Rene Scharfe --- strbuf.c | 7 +++++++ strbuf.h | 1 + 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/strbuf.c b/strbuf.c index 536b432..dbd8c4b 100644 --- a/strbuf.c +++ b/strbuf.c @@ -106,6 +106,13 @@ void strbuf_add(struct strbuf *sb, const void *data, size_t len) strbuf_setlen(sb, sb->len + len); } +void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len) +{ + strbuf_grow(sb, len); + memcpy(sb->buf + sb->len, sb->buf + pos, len); + strbuf_setlen(sb, sb->len + len); +} + void strbuf_addf(struct strbuf *sb, const char *fmt, ...) { int len; diff --git a/strbuf.h b/strbuf.h index 21d8944..1391912 100644 --- a/strbuf.h +++ b/strbuf.h @@ -101,6 +101,7 @@ static inline void strbuf_addstr(struct strbuf *sb, const char *s) { static inline void strbuf_addbuf(struct strbuf *sb, struct strbuf *sb2) { strbuf_add(sb, sb2->buf, sb2->len); } +extern void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len); typedef void (*expand_fn_t) (struct strbuf *sb, const char *placeholder, void *context); extern void strbuf_expand(struct strbuf *sb, const char *format, const char **placeholders, expand_fn_t fn, void *context); -- 1.5.3.5.1651.g30bf