return sb->len - oldlen;
}
+ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint)
+{
+ ssize_t cnt;
+
+ strbuf_grow(sb, hint ? hint : 8192);
+ cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
+ if (cnt > 0)
+ strbuf_setlen(sb, sb->len + cnt);
+ return cnt;
+}
+
+ssize_t strbuf_write(struct strbuf *sb, FILE *f)
+{
+ return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0;
+}
+
+
#define STRBUF_MAXLINK (2*PATH_MAX)
int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
if (errno == ENOMEM)
die("Out of memory, getdelim failed");
- /* Restore slopbuf that we moved out of the way before */
+ /*
+ * Restore strbuf invariants; if getdelim left us with a NULL pointer,
+ * we can just re-init, but otherwise we should make sure that our
+ * length is empty, and that the result is NUL-terminated.
+ */
if (!sb->buf)
strbuf_init(sb, 0);
+ else
+ strbuf_reset(sb);
return EOF;
}
#else
}
#endif
-int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
+static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term)
{
if (strbuf_getwholeline(sb, fp, term))
return EOF;
- if (sb->buf[sb->len-1] == term)
- strbuf_setlen(sb, sb->len-1);
+ if (sb->buf[sb->len - 1] == term)
+ strbuf_setlen(sb, sb->len - 1);
+ return 0;
+}
+
+int strbuf_getline(struct strbuf *sb, FILE *fp)
+{
+ if (strbuf_getwholeline(sb, fp, '\n'))
+ return EOF;
+ if (sb->buf[sb->len - 1] == '\n') {
+ strbuf_setlen(sb, sb->len - 1);
+ if (sb->len && sb->buf[sb->len - 1] == '\r')
+ strbuf_setlen(sb, sb->len - 1);
+ }
return 0;
}
+int strbuf_getline_lf(struct strbuf *sb, FILE *fp)
+{
+ return strbuf_getdelim(sb, fp, '\n');
+}
+
+int strbuf_getline_nul(struct strbuf *sb, FILE *fp)
+{
+ return strbuf_getdelim(sb, fp, '\0');
+}
+
int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
{
strbuf_reset(sb);
size_t len, i;
len = strlen(string);
- result = xmalloc(len + 1);
+ result = xmallocz(len);
for (i = 0; i < len; i++)
result[i] = tolower(string[i]);
result[i] = '\0';
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);
+}