Function take_while

src/inlines.c:259–270

Take characters while a predicate holds, and return a string.

// Take characters while a predicate holds, and return a string.
static inline cmark_chunk take_while(subject *subj, int (*f)(int)) {
  unsigned char c;
  bufsize_t startpos = subj->pos;
  bufsize_t len = 0;

  while ((c = peek_char(subj)) && (*f)(c)) {
    advance(subj);
    len++;
  }

  return cmark_chunk_dup(&subj->input, startpos, len);
}

// Return the number of newlines in a given span of text in a subject.  If
// the number is greater than zero, also return the number of characters