diff options
Diffstat (limited to 'strbuf.c')
| -rw-r--r-- | strbuf.c | 127 |
1 files changed, 118 insertions, 9 deletions
@@ -245,8 +245,8 @@ void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size static char prefix2[2]; if (prefix1[0] != comment_line_char) { - sprintf(prefix1, "%c ", comment_line_char); - sprintf(prefix2, "%c", comment_line_char); + xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char); + xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char); } add_lines(out, prefix1, prefix2, buf, size); } @@ -364,19 +364,19 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) strbuf_grow(sb, hint ? hint : 8192); for (;;) { - ssize_t cnt; + ssize_t want = sb->alloc - sb->len - 1; + ssize_t got = read_in_full(fd, sb->buf + sb->len, want); - cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); - if (cnt < 0) { + if (got < 0) { if (oldalloc == 0) strbuf_release(sb); else strbuf_setlen(sb, oldlen); return -1; } - if (!cnt) + sb->len += got; + if (got < want) break; - sb->len += cnt; strbuf_grow(sb, 8192); } @@ -526,9 +526,10 @@ int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) return 0; } -int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) +ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) { - int fd, len; + int fd; + ssize_t len; fd = open(path, O_RDONLY); if (fd < 0) @@ -709,3 +710,111 @@ char *xstrfmt(const char *fmt, ...) return ret; } + +void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm) +{ + size_t hint = 128; + size_t len; + + if (!*fmt) + return; + + strbuf_grow(sb, hint); + len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm); + + if (!len) { + /* + * strftime reports "0" if it could not fit the result in the buffer. + * Unfortunately, it also reports "0" if the requested time string + * takes 0 bytes. So our strategy is to munge the format so that the + * output contains at least one character, and then drop the extra + * character before returning. + */ + struct strbuf munged_fmt = STRBUF_INIT; + strbuf_addf(&munged_fmt, "%s ", fmt); + while (!len) { + hint *= 2; + strbuf_grow(sb, hint); + len = strftime(sb->buf + sb->len, sb->alloc - sb->len, + munged_fmt.buf, tm); + } + strbuf_release(&munged_fmt); + len--; /* drop munged space */ + } + strbuf_setlen(sb, sb->len + len); +} + +void strbuf_add_unique_abbrev(struct strbuf *sb, const unsigned char *sha1, + int abbrev_len) +{ + int r; + strbuf_grow(sb, GIT_SHA1_HEXSZ + 1); + r = find_unique_abbrev_r(sb->buf + sb->len, sha1, abbrev_len); + strbuf_setlen(sb, sb->len + r); +} + +/* + * Returns the length of a line, without trailing spaces. + * + * If the line ends with newline, it will be removed too. + */ +static size_t cleanup(char *line, size_t len) +{ + while (len) { + unsigned char c = line[len - 1]; + if (!isspace(c)) + break; + len--; + } + + return len; +} + +/* + * Remove empty lines from the beginning and end + * and also trailing spaces from every line. + * + * Turn multiple consecutive empty lines between paragraphs + * into just one empty line. + * + * If the input has only empty lines and spaces, + * no output will be produced. + * + * If last line does not have a newline at the end, one is added. + * + * Enable skip_comments to skip every line starting with comment + * character. + */ +void strbuf_stripspace(struct strbuf *sb, int skip_comments) +{ + int empties = 0; + size_t i, j, len, newlen; + char *eol; + + /* We may have to add a newline. */ + strbuf_grow(sb, 1); + + for (i = j = 0; i < sb->len; i += len, j += newlen) { + eol = memchr(sb->buf + i, '\n', sb->len - i); + len = eol ? eol - (sb->buf + i) + 1 : sb->len - i; + + if (skip_comments && len && sb->buf[i] == comment_line_char) { + newlen = 0; + continue; + } + newlen = cleanup(sb->buf + i, len); + + /* Not just an empty line? */ + if (newlen) { + if (empties > 0 && j > 0) + sb->buf[j++] = '\n'; + empties = 0; + memmove(sb->buf + j, sb->buf + i, newlen); + sb->buf[newlen + j++] = '\n'; + } else { + empties++; + } + } + + strbuf_setlen(sb, j); +} |