mirror of https://github.com/OpenRCT2/OpenRCT2.git
397 lines
14 KiB
C++
397 lines
14 KiB
C++
/*****************************************************************************
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* Copyright (c) 2014-2019 OpenRCT2 developers
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*
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* For a complete list of all authors, please refer to contributors.md
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* Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 is licensed under the GNU General Public License version 3.
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*****************************************************************************/
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#if (defined(__linux__) || defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__EMSCRIPTEN__)) && !defined(__ANDROID__)
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# include "UiContext.h"
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# include <SDL.h>
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# include <dlfcn.h>
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# include <openrct2/common.h>
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# include <openrct2/core/Path.hpp>
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# include <openrct2/core/String.hpp>
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# include <openrct2/localisation/Localisation.h>
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# include <openrct2/ui/UiContext.h>
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# include <sstream>
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# include <stdexcept>
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namespace OpenRCT2::Ui
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{
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enum class DIALOG_TYPE
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{
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NONE,
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KDIALOG,
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ZENITY,
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};
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class LinuxContext final : public IPlatformUiContext
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{
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private:
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public:
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LinuxContext()
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{
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}
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void SetWindowIcon(SDL_Window* window) override
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{
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}
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bool IsSteamOverlayAttached() override
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{
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# ifdef __linux__
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// See http://syprog.blogspot.ru/2011/12/listing-loaded-shared-objects-in-linux.html
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struct lmap
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{
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void* base_address;
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char* path;
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void* unused;
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lmap* next;
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lmap* prev;
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};
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struct dummy
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{
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void* pointers[3];
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dummy* ptr;
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};
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bool result = false;
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void* processHandle = dlopen(nullptr, RTLD_NOW);
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if (processHandle != nullptr)
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{
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dummy* p = ((dummy*)processHandle)->ptr;
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lmap* pl = (lmap*)p->ptr;
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while (pl != nullptr)
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{
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if (strstr(pl->path, "gameoverlayrenderer.so") != nullptr)
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{
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result = true;
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break;
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}
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pl = pl->next;
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}
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dlclose(processHandle);
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}
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return result;
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# else
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return false; // Needed for OpenBSD, likely all other Unixes.
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# endif
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}
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void ShowMessageBox(SDL_Window* window, const std::string& message) override
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{
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log_verbose(message.c_str());
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std::string executablePath;
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DIALOG_TYPE dtype = GetDialogApp(&executablePath);
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switch (dtype)
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{
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case DIALOG_TYPE::KDIALOG:
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{
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std::string cmd = String::Format(
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"%s --title \"OpenRCT2\" --msgbox \"%s\"", executablePath.c_str(), message.c_str());
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Execute(cmd);
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break;
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}
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case DIALOG_TYPE::ZENITY:
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{
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std::string cmd = String::Format(
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"%s --title=\"OpenRCT2\" --info --text=\"%s\"", executablePath.c_str(), message.c_str());
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Execute(cmd);
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break;
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}
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default:
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SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_WARNING, "OpenRCT2", message.c_str(), window);
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break;
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}
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}
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void OpenFolder(const std::string& path) override
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{
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std::string cmd = String::Format("xdg-open %s", EscapePathForShell(path).c_str());
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Execute(cmd);
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}
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std::string ShowFileDialog(SDL_Window* window, const FileDialogDesc& desc) override
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{
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std::string result;
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std::string executablePath;
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DIALOG_TYPE dtype = GetDialogApp(&executablePath);
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switch (dtype)
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{
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case DIALOG_TYPE::KDIALOG:
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{
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std::string action = (desc.Type == FILE_DIALOG_TYPE::OPEN) ? "--getopenfilename" : "--getsavefilename";
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std::string filter = GetKDialogFilterString(desc.Filters);
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std::string cmd = String::StdFormat(
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"%s --title '%s' %s '%s' '%s'", executablePath.c_str(), desc.Title.c_str(), action.c_str(),
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desc.InitialDirectory.c_str(), filter.c_str());
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std::string output;
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if (Execute(cmd, &output) == 0)
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{
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result = output;
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}
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break;
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}
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case DIALOG_TYPE::ZENITY:
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{
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std::string action = "--file-selection";
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std::string flags;
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if (desc.Type == FILE_DIALOG_TYPE::SAVE)
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{
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flags = "--confirm-overwrite --save";
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}
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std::string filters = GetZenityFilterString(desc.Filters);
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std::string cmd = String::StdFormat(
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"%s %s --filename='%s/' %s --title='%s' / %s", executablePath.c_str(), action.c_str(),
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desc.InitialDirectory.c_str(), flags.c_str(), desc.Title.c_str(), filters.c_str());
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std::string output;
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if (Execute(cmd, &output) == 0)
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{
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if (desc.Type == FILE_DIALOG_TYPE::SAVE)
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{
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// The default file extension is taken from the **first** available filter, since
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// we cannot obtain it from zenity's output. This means that the FileDialogDesc::Filters
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// array must be carefully populated, at least the first element.
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std::string pattern = desc.Filters[0].Pattern;
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std::string defaultExtension = pattern.substr(pattern.find_last_of('.'));
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const utf8* filename = Path::GetFileName(output.c_str());
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// If there is no extension, append the pattern
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const utf8* extension = Path::GetExtension(filename);
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result = output;
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if (extension[0] == '\0' && !defaultExtension.empty())
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{
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result = output.append(defaultExtension);
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}
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}
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else
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{
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result = output;
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}
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}
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break;
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}
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default:
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ThrowMissingDialogApp();
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break;
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}
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if (!result.empty())
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{
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if (desc.Type == FILE_DIALOG_TYPE::OPEN && access(result.c_str(), F_OK) == -1)
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{
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std::string msg = String::StdFormat(
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"\"%s\" not found: %s, please choose another file\n", result.c_str(), strerror(errno));
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ShowMessageBox(window, msg);
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return ShowFileDialog(window, desc);
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}
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else if (
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desc.Type == FILE_DIALOG_TYPE::SAVE && access(result.c_str(), F_OK) != -1 && dtype == DIALOG_TYPE::KDIALOG)
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{
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std::string cmd = String::StdFormat("%s --yesno \"Overwrite %s?\"", executablePath.c_str(), result.c_str());
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if (Execute(cmd) != 0)
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{
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result = std::string();
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}
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}
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}
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return result;
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}
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std::string ShowDirectoryDialog(SDL_Window* window, const std::string& title) override
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{
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std::string result;
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std::string executablePath;
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DIALOG_TYPE dtype = GetDialogApp(&executablePath);
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switch (dtype)
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{
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case DIALOG_TYPE::KDIALOG:
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{
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std::string output;
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std::string cmd = String::Format(
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"%s --title '%s' --getexistingdirectory /", executablePath.c_str(), title.c_str());
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if (Execute(cmd, &output) == 0)
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{
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result = output;
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}
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break;
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}
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case DIALOG_TYPE::ZENITY:
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{
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std::string output;
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std::string cmd = String::Format(
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"%s --title='%s' --file-selection --directory /", executablePath.c_str(), title.c_str());
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if (Execute(cmd, &output) == 0)
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{
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result = output;
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}
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break;
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}
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default:
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ThrowMissingDialogApp();
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break;
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}
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return result;
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}
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private:
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static DIALOG_TYPE GetDialogApp(std::string* executablePath)
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{
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// Prefer zenity as it offers more required features, e.g., overwrite
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// confirmation and selecting only existing files.
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// Silence error output with 2> /dev/null to avoid confusion in the
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// case where a user does not have zenity and/or kdialog.
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// OpenRCT2 will fall back to an SDL pop-up if the user has neither.
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if (Execute("which zenity 2> /dev/null", executablePath) == 0)
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{
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return DIALOG_TYPE::ZENITY;
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}
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if (Execute("which kdialog 2> /dev/null", executablePath) == 0)
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{
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return DIALOG_TYPE::KDIALOG;
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}
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return DIALOG_TYPE::NONE;
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}
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static int32_t Execute(const std::string& command, std::string* output = nullptr)
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{
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# ifndef __EMSCRIPTEN__
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log_verbose("executing \"%s\"...", command.c_str());
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FILE* fpipe = popen(command.c_str(), "r");
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if (fpipe == nullptr)
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{
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return -1;
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}
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if (output != nullptr)
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{
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// Read output into buffer
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std::vector<char> outputBuffer;
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char buffer[1024];
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size_t readBytes;
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while ((readBytes = fread(buffer, 1, sizeof(buffer), fpipe)) > 0)
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{
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outputBuffer.insert(outputBuffer.begin(), buffer, buffer + readBytes);
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}
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// Trim line breaks
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size_t outputLength = outputBuffer.size();
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for (size_t i = outputLength - 1; i != SIZE_MAX; i--)
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{
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if (outputBuffer[i] == '\n')
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{
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outputLength = i;
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}
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else
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{
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break;
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}
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}
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// Convert to string
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*output = std::string(outputBuffer.data(), outputLength);
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}
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else
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{
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fflush(fpipe);
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}
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// Return exit code
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return pclose(fpipe);
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# else
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log_warning("Emscripten cannot execute processes. The commandline was '%s'.", command.c_str());
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return -1;
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# endif // __EMSCRIPTEN__
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}
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static std::string GetKDialogFilterString(const std::vector<FileDialogDesc::Filter> filters)
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{
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std::stringstream filtersb;
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bool first = true;
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for (const auto& filter : filters)
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{
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// KDialog wants filters space-delimited and we don't expect ';' anywhere else
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std::string pattern = filter.Pattern;
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for (size_t i = 0; i < pattern.size(); i++)
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{
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if (pattern[i] == ';')
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{
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pattern[i] = ' ';
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}
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}
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if (first)
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{
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filtersb << String::StdFormat("%s | %s", pattern.c_str(), filter.Name.c_str());
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first = false;
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}
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else
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{
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filtersb << String::StdFormat("\\n%s | %s", pattern.c_str(), filter.Name.c_str());
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}
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}
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return filtersb.str();
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}
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static std::string GetZenityFilterString(const std::vector<FileDialogDesc::Filter> filters)
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{
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// Zenity seems to be case sensitive, while KDialog isn't
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std::stringstream filtersb;
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for (const auto& filter : filters)
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{
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filtersb << " --file-filter='" << filter.Name << " | ";
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for (char c : filter.Pattern)
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{
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if (c == ';')
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{
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filtersb << ' ';
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}
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else if (isalpha(c))
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{
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filtersb << '[' << (char)tolower(c) << (char)toupper(c) << ']';
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}
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else
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{
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filtersb << c;
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}
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}
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filtersb << "'";
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}
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return filtersb.str();
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}
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static void ThrowMissingDialogApp()
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{
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auto uiContext = GetContext()->GetUiContext();
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std::string dialogMissingWarning = language_get_string(STR_MISSING_DIALOG_APPLICATION_ERROR);
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uiContext->ShowMessageBox(dialogMissingWarning);
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throw std::runtime_error(dialogMissingWarning);
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}
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static std::string EscapePathForShell(std::string path)
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{
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for (size_t index = 0; (index = path.find('"', index)) != std::string::npos; index += 2)
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{
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path.replace(index, 1, "\\\"");
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}
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return '"' + path + '"';
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}
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};
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IPlatformUiContext* CreatePlatformUiContext()
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{
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return new LinuxContext();
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}
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} // namespace OpenRCT2::Ui
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#endif // __linux__ || __OpenBSD__
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