| 16 | namespace toft { |
| 17 | |
| 18 | int StringVScan(const char* string, const char* format, |
| 19 | const FormatScanArg** args, int nargs) |
| 20 | { |
| 21 | int success_count = 0; |
| 22 | int ai = 0; |
| 23 | const char* f = format; |
| 24 | const char* s = string; |
| 25 | while (*f != '\0') { |
| 26 | if (*f == '%') { |
| 27 | if (f[1] == '\0') |
| 28 | return -1; |
| 29 | if (f[1] == '%') { |
| 30 | if (*s == '%') { |
| 31 | f += 2; |
| 32 | ++s; |
| 33 | } else { |
| 34 | // Not match '%' |
| 35 | break; |
| 36 | } |
| 37 | } else { |
| 38 | ++f; |
| 39 | ScanSpecification spec; |
| 40 | int fw = spec.Parse(f); |
| 41 | if (fw == 0) |
| 42 | break; |
| 43 | bool success; |
| 44 | int sw = 0; |
| 45 | if (spec.skip) { |
| 46 | sw = FormatScanArg::ParseSkipped(s, spec); |
| 47 | success = sw > 0; |
| 48 | } else { |
| 49 | if (spec.specifier == 'n') { |
| 50 | success = args[ai]->WriteInt(s - string, spec); |
| 51 | if (success) |
| 52 | ++success_count; |
| 53 | else |
| 54 | LOG(ERROR) << "Invalid argument " << ai << " for %n"; |
| 55 | } else { |
| 56 | sw = args[ai]->Parse(s, spec); |
| 57 | success = sw > 0; |
| 58 | if (success) { |
| 59 | ++success_count; |
| 60 | ++ai; |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | if (success) { |
| 65 | f += fw; |
| 66 | s += sw; |
| 67 | } else { |
| 68 | break; |
| 69 | } |
| 70 | } |
| 71 | } else { |
| 72 | if (*s == *f) { |
| 73 | ++f; |
| 74 | ++s; |
| 75 | } else { |
no test coverage detected