Function emit_string

crawl-ref/source/json.cc:1179–1309

}

void emit_string(SB *out, const char *str)
{
    bool escape_unicode = false;
    const char *s = str;
    char *b;

    ASSERT(utf8_validate(str));

    /*
     * 14 bytes is enough space to write up to two
     * \uXXXX escapes and two quotation marks.
     */
    sb_need(out, 14);
    b = out->cur;

    *b++ = '"';
    while (*s != 0)
    {
        unsigned char c = *s++;

        /* Encode the next character, and write it to b. */
        switch (c)
        {
        case '"':
            *b++ = '\\';
            *b++ = '"';
            break;
        case '\\':
            *b++ = '\\';
            *b++ = '\\';
            break;
        case '\b':
            *b++ = '\\';
            *b++ = 'b';
            break;
        case '\f':
            *b++ = '\\';
            *b++ = 'f';
            break;
        case '\n':
            *b++ = '\\';
            *b++ = 'n';
            break;
        case '\r':
            *b++ = '\\';
            *b++ = 'r';
            break;
        case '\t':
            *b++ = '\\';
            *b++ = 't';
            break;
        default:
        {
            int len;

            s--;
            len = utf8_validate_cz(s);