Function esc

src/io/json11.cpp:329–337

esc(c) * * Format char c suitable for printing in an error message. */

 * Format char c suitable for printing in an error message.
 */
static inline string esc(char c) {
    char buf[12];
    if (static_cast<uint8_t>(c) >= 0x20 && static_cast<uint8_t>(c) <= 0x7f) {
        snprintf(buf, sizeof buf, "'%c' (%d)", c, c);
    } else {
        snprintf(buf, sizeof buf, "(%d)", c);
    }
    return string(buf);
}

static inline bool in_range(long x, long lower, long upper) {
    return (x >= lower && x <= upper);