diff options
Diffstat (limited to 'strbuf.c')
| -rw-r--r-- | strbuf.c | 144 |
1 files changed, 116 insertions, 28 deletions
@@ -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) @@ -46,7 +44,9 @@ void strbuf_release(struct strbuf *sb) char *strbuf_detach(struct strbuf *sb, size_t *sz) { - char *res = sb->alloc ? sb->buf : NULL; + char *res; + strbuf_grow(sb, 0); + res = sb->buf; if (sz) *sz = sb->len; strbuf_init(sb, 0); @@ -65,12 +65,15 @@ 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) @@ -103,35 +106,30 @@ void strbuf_ltrim(struct strbuf *sb) sb->buf[sb->len] = '\0'; } -struct strbuf **strbuf_split_buf(const char *str, size_t slen, int delim, int max) +struct strbuf **strbuf_split_buf(const char *str, size_t slen, + int terminator, int max) { - int alloc = 2, pos = 0; - const char *n, *p; - struct strbuf **ret; + struct strbuf **ret = NULL; + size_t nr = 0, alloc = 0; struct strbuf *t; - ret = xcalloc(alloc, sizeof(struct strbuf *)); - p = n = str; - while (n < str + slen) { - int len; - 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); + while (slen) { + int len = slen; + if (max <= 0 || nr + 1 < max) { + const char *end = memchr(str, terminator, slen); + if (end) + len = end - str + 1; } - if (!n) - n = str + slen - 1; - len = n - p + 1; t = xmalloc(sizeof(struct strbuf)); strbuf_init(t, len); - strbuf_add(t, p, len); - ret[pos] = t; - ret[++pos] = NULL; - p = ++n; + strbuf_add(t, str, len); + ALLOC_GROW(ret, nr + 2, alloc); + ret[nr++] = t; + str += len; + slen -= len; } + ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */ + ret[nr] = NULL; return ret; } @@ -356,7 +354,6 @@ int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) { int ch; - strbuf_grow(sb, 0); if (feof(fp)) return EOF; @@ -383,6 +380,22 @@ int strbuf_getline(struct strbuf *sb, FILE *fp, int term) return 0; } +int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) +{ + strbuf_reset(sb); + + while (1) { + char ch; + ssize_t len = xread(fd, &ch, 1); + if (len <= 0) + return EOF; + strbuf_addch(sb, ch); + if (ch == term) + break; + } + return 0; +} + int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) { int fd, len; @@ -397,3 +410,78 @@ int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) return len; } + +void strbuf_add_lines(struct strbuf *out, const char *prefix, + const char *buf, size_t size) +{ + while (size) { + const char *next = memchr(buf, '\n', size); + next = next ? (next + 1) : (buf + size); + strbuf_addstr(out, prefix); + strbuf_add(out, buf, next - buf); + size -= next - buf; + buf = next; + } + strbuf_complete_line(out); +} + +static int is_rfc3986_reserved(char ch) +{ + switch (ch) { + case '!': case '*': case '\'': case '(': case ')': case ';': + case ':': case '@': case '&': case '=': case '+': case '$': + case ',': case '/': case '?': case '#': case '[': case ']': + return 1; + } + return 0; +} + +static int is_rfc3986_unreserved(char ch) +{ + return isalnum(ch) || + ch == '-' || ch == '_' || ch == '.' || ch == '~'; +} + +static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, + int reserved) +{ + strbuf_grow(sb, len); + while (len--) { + char ch = *s++; + if (is_rfc3986_unreserved(ch) || + (!reserved && is_rfc3986_reserved(ch))) + strbuf_addch(sb, ch); + else + strbuf_addf(sb, "%%%02x", ch); + } +} + +void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, + int reserved) +{ + strbuf_add_urlencode(sb, s, strlen(s), reserved); +} + +int printf_ln(const char *fmt, ...) +{ + int ret; + va_list ap; + va_start(ap, fmt); + ret = vprintf(fmt, ap); + va_end(ap); + if (ret < 0 || putchar('\n') == EOF) + return -1; + return ret + 1; +} + +int fprintf_ln(FILE *fp, const char *fmt, ...) +{ + int ret; + va_list ap; + va_start(ap, fmt); + ret = vfprintf(fp, fmt, ap); + va_end(ap); + if (ret < 0 || putc('\n', fp) == EOF) + return -1; + return ret + 1; +} |