Lines Matching refs:sb
20 int strbuf_init(struct strbuf *sb, ssize_t hint)
22 sb->alloc = sb->len = 0;
23 sb->buf = strbuf_slopbuf;
25 return strbuf_grow(sb, hint);
29 void strbuf_release(struct strbuf *sb)
31 if (sb->alloc) {
32 zfree(&sb->buf);
33 strbuf_init(sb, 0);
37 char *strbuf_detach(struct strbuf *sb, size_t *sz)
39 char *res = sb->alloc ? sb->buf : NULL;
41 *sz = sb->len;
42 strbuf_init(sb, 0);
46 int strbuf_grow(struct strbuf *sb, size_t extra)
49 size_t nr = sb->len + extra + 1;
51 if (nr < sb->alloc)
54 if (nr <= sb->len)
57 if (alloc_nr(sb->alloc) > nr)
58 nr = alloc_nr(sb->alloc);
61 * Note that sb->buf == strbuf_slopbuf if sb->alloc == 0, and it is
64 buf = realloc(sb->alloc ? sb->buf : NULL, nr * sizeof(*buf));
68 sb->buf = buf;
69 sb->alloc = nr;
73 int strbuf_addch(struct strbuf *sb, int c)
75 int ret = strbuf_grow(sb, 1);
79 sb->buf[sb->len++] = c;
80 sb->buf[sb->len] = '\0';
84 int strbuf_add(struct strbuf *sb, const void *data, size_t len)
86 int ret = strbuf_grow(sb, len);
90 memcpy(sb->buf + sb->len, data, len);
91 return strbuf_setlen(sb, sb->len + len);
94 static int strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap)
99 if (!strbuf_avail(sb)) {
100 ret = strbuf_grow(sb, 64);
106 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
111 if (len > strbuf_avail(sb)) {
112 ret = strbuf_grow(sb, len);
117 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap_saved);
118 if (len > strbuf_avail(sb)) {
125 return strbuf_setlen(sb, sb->len + len);
128 int strbuf_addf(struct strbuf *sb, const char *fmt, ...)
134 ret = strbuf_addv(sb, fmt, ap);
139 ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint)
141 size_t oldlen = sb->len;
142 size_t oldalloc = sb->alloc;
145 ret = strbuf_grow(sb, hint ? hint : 8192);
152 cnt = read(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
155 strbuf_release(sb);
157 strbuf_setlen(sb, oldlen);
162 sb->len += cnt;
163 ret = strbuf_grow(sb, 8192);
168 sb->buf[sb->len] = '\0';
169 return sb->len - oldlen;