X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=strbuf.c;h=9ff1b597c995780026a32a92fab78a780d60329a;hb=5e2b3d7c6741fdd65e195fbe3af98b6d8d2fa551;hp=09c43ae59a7d4715c26f13d72ca37bc759d1c76d;hpb=055f2c5d340508d3542ede8dc1db2aedd0b9f1b5;p=git.git diff --git a/strbuf.c b/strbuf.c index 09c43ae59..9ff1b597c 100644 --- a/strbuf.c +++ b/strbuf.c @@ -30,10 +30,8 @@ void strbuf_init(struct strbuf *sb, size_t hint) { sb->alloc = sb->len = 0; sb->buf = strbuf_slopbuf; - if (hint) { + if (hint) strbuf_grow(sb, hint); - sb->buf[0] = '\0'; - } } void strbuf_release(struct strbuf *sb) @@ -65,12 +63,15 @@ void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) void strbuf_grow(struct strbuf *sb, size_t extra) { + int new_buf = !sb->alloc; if (unsigned_add_overflows(extra, 1) || unsigned_add_overflows(sb->len, extra + 1)) die("you want to use way too much memory"); - if (!sb->alloc) + if (new_buf) sb->buf = NULL; ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); + if (new_buf) + sb->buf[0] = '\0'; } void strbuf_trim(struct strbuf *sb) @@ -103,24 +104,27 @@ void strbuf_ltrim(struct strbuf *sb) sb->buf[sb->len] = '\0'; } -struct strbuf **strbuf_split(const struct strbuf *sb, int delim) +struct strbuf **strbuf_split_buf(const char *str, size_t slen, int delim, int max) { int alloc = 2, pos = 0; - char *n, *p; + const char *n, *p; struct strbuf **ret; struct strbuf *t; ret = xcalloc(alloc, sizeof(struct strbuf *)); - p = n = sb->buf; - while (n < sb->buf + sb->len) { + p = n = str; + while (n < str + slen) { int len; - n = memchr(n, delim, sb->len - (n - sb->buf)); + if (max <= 0 || pos + 1 < max) + n = memchr(n, delim, slen - (n - str)); + else + n = NULL; if (pos + 1 >= alloc) { alloc = alloc * 2; ret = xrealloc(ret, sizeof(struct strbuf *) * alloc); } if (!n) - n = sb->buf + sb->len - 1; + n = str + slen - 1; len = n - p + 1; t = xmalloc(sizeof(struct strbuf)); strbuf_init(t, len);