diff options
Diffstat (limited to 'strbuf.c')
| -rw-r--r-- | strbuf.c | 188 |
1 files changed, 155 insertions, 33 deletions
@@ -44,7 +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); @@ -104,35 +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; } @@ -207,6 +204,54 @@ void strbuf_addf(struct strbuf *sb, const char *fmt, ...) va_end(ap); } +static void add_lines(struct strbuf *out, + const char *prefix1, + const char *prefix2, + const char *buf, size_t size) +{ + while (size) { + const char *prefix; + const char *next = memchr(buf, '\n', size); + next = next ? (next + 1) : (buf + size); + + prefix = (prefix2 && buf[0] == '\n') ? prefix2 : prefix1; + strbuf_addstr(out, prefix); + strbuf_add(out, buf, next - buf); + size -= next - buf; + buf = next; + } + strbuf_complete_line(out); +} + +void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size) +{ + static char prefix1[3]; + static char prefix2[2]; + + if (prefix1[0] != comment_line_char) { + sprintf(prefix1, "%c ", comment_line_char); + sprintf(prefix2, "%c", comment_line_char); + } + add_lines(out, prefix1, prefix2, buf, size); +} + +void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...) +{ + va_list params; + struct strbuf buf = STRBUF_INIT; + int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n'; + + va_start(params, fmt); + strbuf_vaddf(&buf, fmt, params); + va_end(params); + + strbuf_add_commented_lines(sb, buf.buf, buf.len); + if (incomplete_line) + sb->buf[--sb->len] = '\0'; + + strbuf_release(&buf); +} + void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) { int len; @@ -383,6 +428,22 @@ 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; @@ -401,15 +462,33 @@ int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) 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; + add_lines(out, prefix, NULL, buf, size); +} + +void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s) +{ + while (*s) { + size_t len = strcspn(s, "\"<>&"); + strbuf_add(buf, s, len); + s += len; + switch (*s) { + case '"': + strbuf_addstr(buf, """); + break; + case '<': + strbuf_addstr(buf, "<"); + break; + case '>': + strbuf_addstr(buf, ">"); + break; + case '&': + strbuf_addstr(buf, "&"); + break; + case 0: + return; + } + s++; } - strbuf_complete_line(out); } static int is_rfc3986_reserved(char ch) @@ -429,8 +508,8 @@ static int is_rfc3986_unreserved(char ch) ch == '-' || ch == '_' || ch == '.' || ch == '~'; } -void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, - int reserved) +static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, + int reserved) { strbuf_grow(sb, len); while (len--) { @@ -448,3 +527,46 @@ void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, { strbuf_add_urlencode(sb, s, strlen(s), reserved); } + +void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes) +{ + if (bytes > 1 << 30) { + strbuf_addf(buf, "%u.%2.2u GiB", + (int)(bytes >> 30), + (int)(bytes & ((1 << 30) - 1)) / 10737419); + } else if (bytes > 1 << 20) { + int x = bytes + 5243; /* for rounding */ + strbuf_addf(buf, "%u.%2.2u MiB", + x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20); + } else if (bytes > 1 << 10) { + int x = bytes + 5; /* for rounding */ + strbuf_addf(buf, "%u.%2.2u KiB", + x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10); + } else { + strbuf_addf(buf, "%u bytes", (int)bytes); + } +} + +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; +} |