3 void strbuf_init(struct strbuf *sb, size_t hint)
5 memset(sb, 0, sizeof(*sb));
10 void strbuf_release(struct strbuf *sb)
13 memset(sb, 0, sizeof(*sb));
16 void strbuf_reset(struct strbuf *sb)
22 char *strbuf_detach(struct strbuf *sb)
29 void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
36 sb->buf[sb->len] = '\0';
39 void strbuf_grow(struct strbuf *sb, size_t extra)
41 if (sb->len + extra + 1 <= sb->len)
42 die("you want to use way too much memory");
43 ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
46 void strbuf_rtrim(struct strbuf *sb)
48 while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
50 sb->buf[sb->len] = '\0';
53 int strbuf_cmp(struct strbuf *a, struct strbuf *b)
56 if (a->len < b->len) {
57 cmp = memcmp(a->buf, b->buf, a->len);
58 return cmp ? cmp : -1;
60 cmp = memcmp(a->buf, b->buf, b->len);
61 return cmp ? cmp : a->len != b->len;
65 void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
66 const void *data, size_t dlen)
69 die("you want to use way too much memory");
71 die("`pos' is too far after the end of the buffer");
72 if (pos + len > sb->len)
73 die("`pos + len' is too far after the end of the buffer");
76 strbuf_grow(sb, dlen - len);
77 memmove(sb->buf + pos + dlen,
80 memcpy(sb->buf + pos, data, dlen);
81 strbuf_setlen(sb, sb->len + dlen - len);
84 void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
86 strbuf_splice(sb, pos, 0, data, len);
89 void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
91 strbuf_splice(sb, pos, len, NULL, 0);
94 void strbuf_add(struct strbuf *sb, const void *data, size_t len)
97 memcpy(sb->buf + sb->len, data, len);
98 strbuf_setlen(sb, sb->len + len);
101 void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
107 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
112 if (len > strbuf_avail(sb)) {
113 strbuf_grow(sb, len);
115 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
117 if (len > strbuf_avail(sb)) {
118 die("this should not happen, your snprintf is broken");
121 strbuf_setlen(sb, sb->len + len);
124 size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
128 strbuf_grow(sb, size);
129 res = fread(sb->buf + sb->len, 1, size, f);
131 strbuf_setlen(sb, sb->len + res);
136 ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
138 size_t oldlen = sb->len;
140 strbuf_grow(sb, hint ? hint : 8192);
144 cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
146 strbuf_setlen(sb, oldlen);
152 strbuf_grow(sb, 8192);
155 sb->buf[sb->len] = '\0';
156 return sb->len - oldlen;
159 int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
168 while ((ch = fgetc(fp)) != EOF) {
172 sb->buf[sb->len++] = ch;
174 if (ch == EOF && sb->len == 0)
177 sb->buf[sb->len] = '\0';
181 int strbuf_read_file(struct strbuf *sb, const char *path)
185 fd = open(path, O_RDONLY);
188 len = strbuf_read(sb, fd, 0);