Returns 1 if argument consumed, 0 if all done, -1 on error. */
| 30 | |
| 31 | /* Returns 1 if argument consumed, 0 if all done, -1 on error. */ |
| 32 | int parse_one(int *argc, char *argv[], enum opt_type is_early, unsigned *offset, |
| 33 | void (*errlog)(const char *fmt, ...), bool unknown_ok) |
| 34 | { |
| 35 | unsigned i, arg, len; |
| 36 | const char *o, *optarg = NULL; |
| 37 | char *problem = NULL; |
| 38 | |
| 39 | if (getenv("POSIXLY_CORRECT")) { |
| 40 | /* Don't find options after non-options. */ |
| 41 | arg = 1; |
| 42 | } else { |
| 43 | for (arg = 1; argv[arg]; arg++) { |
| 44 | if (argv[arg][0] == '-') |
| 45 | break; |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | if (!argv[arg] || argv[arg][0] != '-') |
| 50 | return 0; |
| 51 | |
| 52 | /* Special arg terminator option. */ |
| 53 | if (strcmp(argv[arg], "--") == 0) { |
| 54 | consume_option(argc, argv, arg); |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | /* Long options start with -- */ |
| 59 | if (argv[arg][1] == '-') { |
| 60 | assert(*offset == 0); |
| 61 | for (o = first_lopt(&i, &len); o; o = next_lopt(o, &i, &len)) { |
| 62 | if (strncmp(argv[arg] + 2, o, len) != 0) |
| 63 | continue; |
| 64 | if (argv[arg][2 + len] == '=') |
| 65 | optarg = argv[arg] + 2 + len + 1; |
| 66 | else if (argv[arg][2 + len] != '\0') |
| 67 | continue; |
| 68 | break; |
| 69 | } |
| 70 | if (!o) { |
| 71 | if (unknown_ok) |
| 72 | goto ok; |
| 73 | return parse_err(errlog, argv[0], |
| 74 | argv[arg], strlen(argv[arg]), |
| 75 | "unrecognized option"); |
| 76 | } |
| 77 | /* For error messages, we include the leading '--' */ |
| 78 | o -= 2; |
| 79 | len += 2; |
| 80 | } else { |
| 81 | /* offset allows us to handle -abc */ |
| 82 | for (o = first_sopt(&i); o; o = next_sopt(o, &i)) { |
| 83 | if (argv[arg][*offset + 1] != *o) |
| 84 | continue; |
| 85 | (*offset)++; |
| 86 | break; |
| 87 | } |
| 88 | if (!o) { |
| 89 | if (unknown_ok) { |
no test coverage detected