Return number of chars of words to put on this line. * Prefix is set to number to skip at start, maxlen is max width, returns * length (after prefix) to put on this line. * start is set if we start a new line in the source description. */
| 50 | * length (after prefix) to put on this line. |
| 51 | * start is set if we start a new line in the source description. */ |
| 52 | static size_t consume_words(const char *words, size_t maxlen, size_t *prefix, |
| 53 | bool *start) |
| 54 | { |
| 55 | size_t oldlen, len; |
| 56 | |
| 57 | /* Always swollow leading whitespace. */ |
| 58 | *prefix = strspn(words, " \n"); |
| 59 | words += *prefix; |
| 60 | |
| 61 | /* Leading whitespace at start of line means literal. */ |
| 62 | if (*start && *prefix) { |
| 63 | oldlen = strcspn(words, "\n"); |
| 64 | } else { |
| 65 | /* Use at least one word, even if it takes us over maxlen. */ |
| 66 | oldlen = len = strcspn(words, " "); |
| 67 | while (len <= maxlen) { |
| 68 | oldlen = len; |
| 69 | len += strspn(words+len, " "); |
| 70 | if (words[len] == '\n') |
| 71 | break; |
| 72 | len += strcspn(words+len, " \n"); |
| 73 | if (len == oldlen) |
| 74 | break; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | if (oldlen != 0) |
| 79 | *start = (words[oldlen - 1] == '\n'); |
| 80 | return oldlen; |
| 81 | } |
| 82 | |
| 83 | static char *add_str_len(char *base, size_t *len, size_t *max, |
| 84 | const char *str, size_t slen) |