Function ParseScanSet

base/string/format/specification.cpp:94–128

}

static int ParseScanSet(const char* format, char (*cs)[32])
{
    const char* f = format;
    bool is_neg = *f == '^';
    if (is_neg) {
        memset(cs, 0xFF, sizeof(*cs));
        ++f;
    } else {
        memset(cs, 0, sizeof(*cs));
    }

    while (*f != ']') {
        if (f - format > 256) {
            LOG(DFATAL) << "Invalid scanset, too long to see the ending ']'";
            return 0;
        }
        if (*f == '\0') {
            LOG(DFATAL) << "Invalid scanset, unexpected end before ']'";
            return 0;
        }

        if (f[1] == '-' && f[2] != '\0' && f[2] != ']') {
            // Process char range
            ScanSetSetCharRange(cs, f[0], f[2], !is_neg);
            f += 3;
        } else {
            // Single char
            ScanSetSetChar(cs, *f, !is_neg);
            f += 1;
        }
    }
    ++f;

    return f - format;
}

static int ParseSpecifier(const char* format, char* specifier)
{