Add basic export code

CMakeLists.txt

@@ -9,7 +9,7 @@ project(logmeow CXX)
 find_package(SDL2 REQUIRED)
 find_package(Freetype 2 REQUIRED)
 find_package(nlohmann_json REQUIRED)
-list(APPEND LIBS -lpcre2-8 -lpcre2-posix SDL2 nlohmann_json::nlohmann_json imgui)
+list(APPEND LIBS -lpcre2-8 -lpcre2-posix SDL2 nlohmann_json::nlohmann_json imgui nfd)
 list(APPEND IMGUI_LIBS SDL2 Freetype::Freetype)
 
 set(INCLUDES "")
@@ -19,7 +19,7 @@ set(DEFINITIONS "")
 # imgui include because https://github.com/ocornut/imgui/issues/6184#issuecomment-1439570929
 list(APPEND INCLUDES thirdparty thirdparty/imgui /usr/include/SDL2)
 list(APPEND SOURCES main.cpp event_loop.cpp logcat_thread.cpp logcat_entry.cpp log.cpp config.cpp filters.cpp misc.cpp pcre2_wrapper.cpp
-    group_panel.cpp fragments/filters.cpp windows/logs.cpp windows/settings.cpp windows/main.cpp)
+    group_panel.cpp fragments/filters.cpp fragments/export.cpp windows/logs.cpp windows/settings.cpp windows/main.cpp)
 list(APPEND IMGUI_SOURCES thirdparty/imgui/imgui.cpp thirdparty/imgui/imgui_draw.cpp thirdparty/imgui/imgui_widgets.cpp thirdparty/imgui/imgui_tables.cpp
     thirdparty/imgui/misc/cpp/imgui_stdlib.cpp thirdparty/imgui/misc/freetype/imgui_freetype.cpp
     thirdparty/imgui/backends/imgui_impl_sdl2.cpp thirdparty/imgui/backends/imgui_impl_opengl3.cpp)
@@ -88,6 +88,9 @@ target_compile_definitions(imgui PRIVATE ${DEFINITIONS})
 # it seems like compilers may issue a warning for unknown warnings to ignore
 target_compile_options(imgui PRIVATE ${FLAGS} -Wno-unknown-warning-option -Wno-conversion)
 
+set(NFD_PORTAL ON)
+add_subdirectory(thirdparty/nativefiledialog-extended)
+
 add_executable(${PROJECT_NAME} ${SOURCES})
 set_target_properties(${PROJECT_NAME}
     PROPERTIES

fragments/export.cpp

@@ -0,0 +1,71 @@
+#include <imgui/imgui.h>
+#include <nativefiledialog-extended/src/include/nfd.h>
+#include <optional>
+
+#include "../file.h"
+#include "../logcat_entry.h"
+#include "export.h"
+
+enum class ExportAmount : int {
+    All = 0,
+    Filtered = 1,
+};
+
+static inline void export_logcat_entries(File& file, const std::vector<LogcatEntry>& logcat_entries,
+        const std::vector<size_t>& filtered_logcat_entry_offsets, ExportAmount export_amount, bool export_buffers);
+static inline std::optional<File> save_file_picker();
+
+void export_fragment(const std::vector<LogcatEntry>& logcat_entries, const std::vector<size_t>& filtered_logcat_entry_offsets) {
+    static ExportAmount export_amount = ExportAmount::Filtered;
+    static bool export_buffers = true;
+
+    ImGui::RadioButton("Export all entries", reinterpret_cast<int*>(&export_amount), static_cast<int>(ExportAmount::All));
+    ImGui::RadioButton("Export filtered entries", reinterpret_cast<int*>(&export_amount), static_cast<int>(ExportAmount::Filtered));
+    ImGui::Checkbox("Export buffers", &export_buffers);
+    ImGui::Separator();
+
+    if (ImGui::Button("Export to File")) {
+        std::optional<File> file = save_file_picker();
+        if (file) {
+            export_logcat_entries(*file, logcat_entries, filtered_logcat_entry_offsets, export_amount, export_buffers);
+            ImGui::CloseCurrentPopup();
+        }
+    }
+
+    ImGui::SameLine();
+    if (ImGui::Button("Export to Clipboard")) {
+        // TODO exist
+    }
+}
+
+static inline void export_logcat_entries(File& file, const std::vector<LogcatEntry>& logcat_entries,
+        const std::vector<size_t>& filtered_logcat_entry_offsets, ExportAmount export_amount, bool export_buffers) {
+    // TODO actually do the job
+    file.write(std::string("Count of all entries: ") + std::to_string(logcat_entries.size()) + '\n');
+    file.write(std::string("Count of filtered entries: ") + std::to_string(filtered_logcat_entry_offsets.size()) + '\n');
+    file.write(std::string("Export amount: ") + (export_amount == ExportAmount::All ? "all" : "filtered") + '\n');
+    file.write(std::string("Export buffers: ") + (export_buffers ? "true" : "false") + '\n');
+}
+
+static inline std::optional<File> save_file_picker() {
+    nfdchar_t* path;
+    nfdfilteritem_t filters[1] = {{"Log file", "log"}};
+    nfdresult_t res = NFD_SaveDialog(&path, filters, 1, nullptr, "logcat.log");
+
+    if (res == NFD_OKAY) {
+        try {
+            File file(path, "w");
+            NFD_FreePath(path);
+            return std::move(file);
+        } catch (const std::exception& e) {
+            NFD_FreePath(path);
+            log(std::string("Failed to open file from file picker: ") + e.what());
+        }
+    } else if (res == NFD_CANCEL) {
+        // dialog was canceled, shrug
+    } else {
+        log(std::string("Failed to open file picker: ") + NFD_GetError());
+    }
+
+    return std::nullopt;
+}

fragments/export.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <vector>
+#include <stddef.h>
+
+struct LogcatEntry; // forward declaration from ../logcat_entry.h
+
+void export_fragment(const std::vector<LogcatEntry>& logcat_entries, const std::vector<size_t>& filtered_logcat_entry_offsets);

main.cpp

@@ -12,6 +12,7 @@
 #else
     #include <SDL_opengl.h>
 #endif
+#include <nativefiledialog-extended/src/include/nfd.h>
 
 #include "log.h"
 #include "fonts.h"
@@ -47,6 +48,13 @@ int main() {
         return 1;
     }
 
+    // Setup NFDe
+    if (NFD_Init() != NFD_OKAY) {
+        SDL_Quit();
+        fprintf(stderr, "NFD_Init(): %s\n", NFD_GetError());
+        return 1;
+    }
+
     // Decide GL+GLSL versions
 #if defined(IMGUI_IMPL_OPENGL_ES2)
     // GL ES 2.0 + GLSL 100
@@ -178,6 +186,8 @@ int main() {
     ImGui_ImplSDL2_Shutdown();
     ImGui::DestroyContext();
 
+    NFD_Quit();
+
     SDL_GL_DeleteContext(gl_context);
     SDL_DestroyWindow(window);
     SDL_Quit();

thirdparty/nativefiledialog-extended

@@ -0,0 +1 @@
+Subproject commit 7909f55d912fe353ee2df6b08eec9313b50685f7

windows/main.cpp

@@ -1,4 +1,5 @@
 #include <imgui/imgui.h>
+#include <imgui/imgui_internal.h>
 #include <ctime>
 #include <string>
 #include <vector>
@@ -7,6 +8,7 @@
 #include "../config.h"
 #include "../logcat_entry.h"
 #include "../logcat_thread.h"
+#include "../fragments/export.h"
 #include "main.h"
 
 static inline void render_table_item_context_menu(const LogcatEntry& logcat_entry) {
@@ -166,6 +168,17 @@ void main_window(bool latest_log_entries_read, ImFont* monospace_font, LogcatThr
         ImGui::EndDisabled();
     }
 
+    ImGui::SameLine();
+    ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);
+    ImGui::SameLine();
+    if (ImGui::Button("Export")) {
+        ImGui::OpenPopup("export_logcat");
+    }
+    if (ImGui::BeginPopup("export_logcat")) {
+        export_fragment(logcat_entries, filtered_logcat_entry_offsets);
+        ImGui::EndPopup();
+    }
+
     ImGui::Separator();
     // copied from imgui/imgui_demo.cpp: [SECTION] Example App: Debug Console / ShowExampleAppConsole()
     // and [SECTION] Example App: Long Text / ShowExampleAppLongText()