-/**
- * call a custom function for each complete line
- *
- * \param buf the buffer containing data seperated by newlines
- * \param n the number of bytes in \a buf
- * \param line_handler the custom function
- *
- * If \a line_handler is \p NULL, return number of complete lines in buf.
- * Otherwise, call \a line_handler for each complete line. The rest of the
- * buffer (last chunk containing incomplete line is moved to the beginning of
- * the buffer.
- *
- * \return If line_handler is not NULL, this function returns the number
- * of bytes not handled to \a line_handler.
- */
-unsigned for_each_line(char *buf, int n, void (*line_handler)(char *))
-{
- char *start = buf, *end;
- int i, num_lines = 0;
-
-// PARA_INFO_LOG("buf: %s", buf);
- while (start < buf + n) {
- char *next_null;
- char *next_cr;
-
- next_cr = memchr(start, '\n', buf + n - start);
- next_null = memchr(start, '\0', buf + n - start);
- if (!next_cr && !next_null)
- break;
- if (next_cr && next_null) {
- end = next_cr < next_null? next_cr : next_null;
- } else if (next_null) {
- end = next_null;
- } else
- end = next_cr;
- num_lines++;
- if (line_handler) {
- *end = '\0';
-// PARA_INFO_LOG("calling line handler: %s\n", start);
- line_handler(start);
- start = ++end;
- } else
- start = ++end;
- }
- if (!line_handler)
- return num_lines;
- i = buf + n - start;
- if (i && i != n)
- memmove(buf, start, i);
- return i;
-}
-