api_buffer_dump.cpp

void dump_buffer(API::Buffer& buf, unsigned codepage = 0)
{
    const char ascii_lup = 201, ascii_rup = 187,
        ascii_lsp = 199, ascii_rsp = 182,
        ascii_lbt = 200, ascii_rbt = 188,
        ascii_up_cross = 209, ascii_bt_cross = 207,
        ascii_cross = 197,
        ascii_v_sp = 179, ascii_h_sp = 196,
        ascii_v_border = 186, ascii_h_border = 205;

    const size_t line = 0x10;

    //code page
    if (!codepage) codepage = GetConsoleOutputCP();
    SetConsoleOutputCP(codepage);

    //start
    putc(ascii_lup, stdout);
    for (uint64_t i = 0; i < 8; i++) putc(ascii_h_border, stdout);
    putc(ascii_up_cross, stdout);
    for (uint64_t i = 0; i < line * 3 - 1; i++)
        putc(ascii_h_border, stdout);
    putc(ascii_up_cross, stdout);
    for (uint64_t i = 0; i < line; i++)
        putc(ascii_h_border, stdout);
    putc(ascii_rup, stdout);

    putc('\n', stdout);

    //header
    putc(ascii_v_border, stdout);
    printf(" offset ");
    putc(ascii_v_sp, stdout);
    for (uint64_t i = 0; i < line; i++)
        printf(i < line - 1 ? "%02x " : "%02x", i & 0xFF);
    putc(ascii_v_sp, stdout);
    switch (codepage)
    {
    case CP_UTF7: printf(" UTF-7  "); break;
    case CP_UTF8: printf(" UTF-8  "); break;
    default: printf(" ANSI CP #%05d ", codepage);
    }
    putc(ascii_v_border, stdout);

    putc('\n', stdout);

    //split
    putc(ascii_lsp, stdout);
    for (uint64_t i = 0; i < 8; i++)
        putc(ascii_h_sp, stdout);
    putc(ascii_cross, stdout);
    for (uint64_t i = 0; i < line * 3 - 1; i++)
        putc(ascii_h_sp, stdout);
    putc(ascii_cross, stdout);
    for (uint64_t i = 0; i < line; i++)
        putc(ascii_h_sp, stdout);
    putc(ascii_rsp, stdout);

    putc('\n', stdout);

    //hex dump
    for (size_t off = 0; off < buf.GetSize(); off += line)
    {
        size_t len = std::min(buf.GetSize() - off, line);

        putc(ascii_v_border, stdout);
        printf("%08" FCroOff, off);
        if (len) putc(ascii_v_sp, stdout);
        else break;

        for (uint64_t i = 0; i < line; i++)
        {
            if (i < len)
            {
                printf(i < line - 1 ? "%02X " : "%02X",
                    buf.GetData()[off + i] & 0xFF);
            }
            else printf(i < line - 1 ? "   " : "  ");
        }

        putc(ascii_v_sp, stdout);
        for (uint64_t i = 0; i < line; i++)
        {
            if (i < len)
            {
                uint8_t byte = buf.GetData()[off + i];
                putc(byte >= 0x20 ? (char)byte : '.', stdout);
            }
            else putc(' ', stdout);
        }
        putc(ascii_v_border, stdout);

        putc('\n', stdout);
    }

    //end
    putc(ascii_lbt, stdout);

    for (uint64_t i = 0; i < 8; i++)
        putc(ascii_h_border, stdout);
    putc(ascii_bt_cross, stdout);

    for (uint64_t i = 0; i < line * 3 - 1; i++)
        putc(ascii_h_border, stdout);

    putc(ascii_bt_cross, stdout);
    for (uint64_t i = 0; i < line; i++)
        putc(ascii_h_border, stdout);
    putc(ascii_rbt, stdout);

    putc('\n', stdout);
}