4 void strbuf_init(struct strbuf *sb, size_t hint)
6 memset(sb, 0, sizeof(*sb));
11 void strbuf_release(struct strbuf *sb)
14 memset(sb, 0, sizeof(*sb));
17 void strbuf_reset(struct strbuf *sb)
24 char *strbuf_detach(struct strbuf *sb)
31 void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
38 sb->buf[sb->len] = '\0';
41 void strbuf_grow(struct strbuf *sb, size_t extra)
43 if (sb->len + extra + 1 <= sb->len)
44 die("you want to use way too much memory");
45 ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
48 void strbuf_rtrim(struct strbuf *sb)
50 while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
52 sb->buf[sb->len] = '\0';
55 void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
59 die("`pos' is too far after the end of the buffer");
60 memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos);
61 memcpy(sb->buf + pos, data, len);
62 strbuf_setlen(sb, sb->len + 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_add(struct strbuf *sb, const void *data, size_t len)
87 memcpy(sb->buf + sb->len, data, len);
88 strbuf_setlen(sb, sb->len + len);
91 void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
97 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
102 if (len > strbuf_avail(sb)) {
103 strbuf_grow(sb, len);
105 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
107 if (len > strbuf_avail(sb)) {
108 die("this should not happen, your snprintf is broken");
111 strbuf_setlen(sb, sb->len + len);
114 size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
118 strbuf_grow(sb, size);
119 res = fread(sb->buf + sb->len, 1, size, f);
121 strbuf_setlen(sb, sb->len + res);
126 ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
128 size_t oldlen = sb->len;
130 strbuf_grow(sb, hint ? hint : 8192);
134 cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
136 strbuf_setlen(sb, oldlen);
142 strbuf_grow(sb, 8192);
145 sb->buf[sb->len] = '\0';
146 return sb->len - oldlen;
149 void read_line(struct strbuf *sb, FILE *fp, int term)
159 while ((ch = fgetc(fp)) != EOF) {
163 sb->buf[sb->len++] = ch;
165 if (ch == EOF && sb->len == 0) {
171 sb->buf[sb->len] = '\0';