/**
 * Copyright (c) 2022, Timothy Stack
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * * Neither the name of Timothy Stack nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "attr_line.builder.hh"

attr_line_builder&
attr_line_builder::append_as_hexdump(const string_fragment& in)
{
    auto first = true;
    auto remaining = in;
    while (!remaining.empty()) {
        if (first) {
            first = false;
        } else {
            this->append("\n");
        }

        auto [sf, rest] = remaining.split_n(16);
        auto byte_off = size_t{0};
        for (auto ch : sf) {
            if (byte_off == 8) {
                this->append(" ");
            }
            std::optional<role_t> ro;
            if (ch == '\0') {
                ro = role_t::VCR_NULL;
            } else if (isspace(ch) || iscntrl(ch)) {
                ro = role_t::VCR_ASCII_CTRL;
            } else if (!isprint(ch)) {
                ro = role_t::VCR_NON_ASCII;
            }
            auto ag = ro.has_value()
                ? this->with_attr(VC_ROLE.value(ro.value()))
                : this->with_default();
            this->appendf(FMT_STRING(" {:0>2x}"), ch);
            byte_off += 1;
        }
        for (; byte_off < 16; byte_off++) {
            if (byte_off == 8) {
                this->append(" ");
            }
            this->append("   ");
        }
        this->append("  ");
        byte_off = 0;
        for (auto ch : sf) {
            if (byte_off == 8) {
                this->append(" ");
            }
            if (ch == '\0') {
                auto ag = this->with_attr(VC_ROLE.value(role_t::VCR_NULL));
                this->append("\u22c4");
            } else if (isspace(ch)) {
                auto ag
                    = this->with_attr(VC_ROLE.value(role_t::VCR_ASCII_CTRL));
                this->append("_");
            } else if (iscntrl(ch)) {
                auto ag
                    = this->with_attr(VC_ROLE.value(role_t::VCR_ASCII_CTRL));
                this->append("\u2022");
            } else if (isprint(ch)) {
                this->alb_line.get_string().push_back(ch);
            } else {
                auto ag = this->with_attr(VC_ROLE.value(role_t::VCR_NON_ASCII));
                this->append("\u00d7");
            }
            byte_off += 1;
        }

        remaining = rest;
    }

    return *this;
}
