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 void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
54 const void *data, size_t dlen)
57 die("you want to use way too much memory");
59 die("`pos' is too far after the end of the buffer");
60 if (pos + len > sb->len)
61 die("`pos + len' is too far after the end of the buffer");
64 strbuf_grow(sb, dlen - len);
65 memmove(sb->buf + pos + dlen,
68 memcpy(sb->buf + pos, data, dlen);
69 strbuf_setlen(sb, sb->len + dlen - len);
72 void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
74 strbuf_splice(sb, pos, 0, data, len);
77 void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
79 strbuf_splice(sb, pos, len, NULL, 0);
82 void strbuf_add(struct strbuf *sb, const void *data, size_t len)
85 memcpy(sb->buf + sb->len, data, len);
86 strbuf_setlen(sb, sb->len + len);
89 void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
95 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
100 if (len > strbuf_avail(sb)) {
101 strbuf_grow(sb, len);
103 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
105 if (len > strbuf_avail(sb)) {
106 die("this should not happen, your snprintf is broken");
109 strbuf_setlen(sb, sb->len + len);
112 size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
116 strbuf_grow(sb, size);
117 res = fread(sb->buf + sb->len, 1, size, f);
119 strbuf_setlen(sb, sb->len + res);
124 ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
126 size_t oldlen = sb->len;
128 strbuf_grow(sb, hint ? hint : 8192);
132 cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
134 strbuf_setlen(sb, oldlen);
140 strbuf_grow(sb, 8192);
143 sb->buf[sb->len] = '\0';
144 return sb->len - oldlen;
147 int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
156 while ((ch = fgetc(fp)) != EOF) {
160 sb->buf[sb->len++] = ch;
162 if (ch == EOF && sb->len == 0)
165 sb->buf[sb->len] = '\0';