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https://github.com/Dingo-Shenanigans/ReSkate.git
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Jean-Luc T.
e031571e1a
Reject malformed, non-finite, and out-of-range progress values while preserving them as ordinary messages. Add parser regression tests for progress and QR-code output, and register them with CMake.
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
#pragma once
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#include <cmath>
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#include <filesystem>
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#include <optional>
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#include <string>
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#include <string_view>
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#include <vector>
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namespace dingosdk::launcher_gui {
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// DepotDownloader prints its Steam sign-in QR code as rows of two-character
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// modules ("██" dark, " " light) and its progress as " 12.34% path".
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class DepotOutput {
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public:
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std::optional<std::vector<std::string>> qr_update;
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std::optional<float> percent;
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std::string file;
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std::string message;
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void feed(std::string_view line) {
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qr_update.reset();
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percent.reset();
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if (line.find("sign in with this QR code") != std::string_view::npos) {
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collecting_ = true;
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rows_.clear();
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return;
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}
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if (line.find("QR code has changed") != std::string_view::npos) return;
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if (collecting_) {
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std::string modules;
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if (qr_row(line, modules)) {
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if (modules.find('#') != std::string::npos) rows_.push_back(std::move(modules));
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else if (rows_.size() >= 21) finish(); // the smallest QR code is 21 x 21
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return;
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}
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if (!rows_.empty()) finish();
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collecting_ = false;
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}
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const auto trimmed = trim(line);
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if (trimmed.empty()) return;
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if (showing_qr_) { showing_qr_ = false; qr_update = std::vector<std::string>{}; }
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const auto sign = trimmed.find('%');
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if (sign != std::string_view::npos && sign <= 6 && sign + 1 < trimmed.size() && trimmed[sign + 1] == ' ') {
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try {
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std::size_t consumed{};
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const float value = std::stof(std::string(trimmed.substr(0, sign)), &consumed);
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if (consumed == sign && std::isfinite(value) && value >= 0.0f && value <= 100.0f) {
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percent = value;
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file = filename(trimmed.substr(sign + 2));
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return;
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}
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} catch (...) {}
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}
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message = std::string(trimmed.substr(0, 160));
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}
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private:
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bool collecting_{};
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static std::string filename(std::string_view path) {
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const auto slash = path.find_last_of("\\/");
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return std::string(slash == std::string_view::npos ? path : path.substr(slash + 1));
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}
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bool showing_qr_{};
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std::vector<std::string> rows_;
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static std::string_view trim(std::string_view value) {
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while (!value.empty() && (value.front() == ' ' || value.front() == '\t')) value.remove_prefix(1);
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while (!value.empty() && (value.back() == ' ' || value.back() == '\t')) value.remove_suffix(1);
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return value;
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}
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// Without a console DepotDownloader writes in the ANSI code page, where the
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// full block becomes '?'; a console gives UTF-8 or OEM 0xDB instead.
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static bool qr_row(std::string_view line, std::string& modules) {
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std::string cells;
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for (std::size_t index = 0; index < line.size();) {
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if (line[index] == ' ') { cells.push_back(' '); ++index; }
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else if (line.substr(index, 3) == "\xE2\x96\x88") { cells.push_back('#'); index += 3; }
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else if (line[index] == '?' || line[index] == '\xDB') { cells.push_back('#'); ++index; }
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else return false;
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}
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if (cells.empty()) return true; // a blank line is part of the quiet zone
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for (std::size_t index = 0; index < cells.size(); index += 2) modules.push_back(cells[index]);
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return true;
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}
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void finish() {
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qr_update = rows_;
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showing_qr_ = true;
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collecting_ = false;
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rows_.clear();
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}
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};
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} // namespace dingosdk::launcher_gui
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