Add import functionality

CMakeLists.txt

@@ -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 fragments/export.cpp windows/logs.cpp windows/settings.cpp windows/main.cpp)
+    group_panel.cpp fragments/filters.cpp fragments/export.cpp fragments/import.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)

fragments/export.cpp

@@ -13,7 +13,7 @@ enum class ExportAmount : int {
 
 static inline void export_logcat_entries(const LogcatEntries& logcat_entries, ExportAmount export_amount, bool export_buffers, File& file);
 static inline void export_logcat_entries_to_clipboard(const LogcatEntries& logcat_entries, ExportAmount export_amount, bool export_buffers);
-static inline void export_logcat_entries(const LogcatEntries& logcat_entries, ExportAmount export_amount, bool export_buffers, auto cb);
+static void export_logcat_entries(const LogcatEntries& logcat_entries, ExportAmount export_amount, bool export_buffers, auto cb);
 static inline std::optional<File> save_file_picker();
 
 void export_fragment(const LogcatEntries& logcat_entries) {
@@ -64,7 +64,7 @@ static inline void export_logcat_entries_to_clipboard(const LogcatEntries& logca
     ImGui::SetClipboardText(text.c_str());
 }
 
-static inline void export_logcat_entries(const LogcatEntries& logcat_entries, ExportAmount export_amount, bool export_buffers, auto cb) {
+static void export_logcat_entries(const LogcatEntries& logcat_entries, ExportAmount export_amount, bool export_buffers, auto cb) {
     size_t size;
     const LogcatEntry& (LogcatEntries::*get_fn)(size_t) const;
     unsigned int buffers_printed = 0;

fragments/export.h

@@ -1,7 +1,5 @@
 #pragma once
 
-#include <vector>
-
 class LogcatEntries; // forward declaration from ../logcat_entry.h
 
 void export_fragment(const LogcatEntries& logcat_entries);

fragments/import.cpp

@@ -0,0 +1,154 @@
+#include <imgui/imgui.h>
+#include <nativefiledialog-extended/src/include/nfd.h>
+#include <optional>
+
+#include "../file.h"
+#include "../logcat_entry.h"
+
+static inline void import_logcat_entries(LogcatEntries& logcat_entries, bool ignore_buffer_lines, File& file);
+static inline void import_logcat_entries_from_clipboard(LogcatEntries& logcat_entries, bool ignore_buffer_lines);
+static void import_logcat_entries(LogcatEntries& logcat_entries, bool ignore_buffer_lines, auto cb);
+static inline std::optional<File> open_file_picker();
+
+void import_fragment(LogcatEntries& logcat_entries) {
+    static bool ignore_buffer_lines = false;
+
+    ImGui::Checkbox("Ignore buffer lines", &ignore_buffer_lines);
+
+    if (ImGui::Button("Import from File")) {
+        std::optional<File> file = open_file_picker();
+        if (file) {
+            ImGui::CloseCurrentPopup();
+            try {
+                import_logcat_entries(logcat_entries, ignore_buffer_lines, *file);
+            } catch (const std::exception& e) {
+                log(std::string("Failed to import logcat entries: ") + e.what());
+            }
+        }
+    }
+
+    ImGui::SameLine();
+    if (ImGui::Button("Import from Clipboard")) {
+        ImGui::CloseCurrentPopup();
+        try {
+            import_logcat_entries_from_clipboard(logcat_entries, ignore_buffer_lines);
+        } catch (const std::exception& e) {
+            log(std::string("Failed to import logcat entries: ") + e.what());
+        }
+    }
+}
+
+static inline void import_logcat_entries(LogcatEntries& logcat_entries, bool ignore_buffer_lines, File& file) {
+    auto handle_valid_char = [](char line[MAX_LOGCAT_LINE_SIZE], size_t* line_length, char c) -> std::optional<bool> {
+        if (c == '\n') {
+            return true;
+        }
+        if (*line_length == MAX_LOGCAT_LINE_SIZE) {
+            throw std::runtime_error("Received line longer than 512k");
+        }
+
+        line[*line_length] = c;
+        (*line_length)++;
+
+        return std::nullopt;
+    };
+    auto handle_char = [&](char line[MAX_LOGCAT_LINE_SIZE], size_t* line_length, int c) -> std::optional<bool> {
+        if (c != EOF) {
+            return handle_valid_char(line, line_length, static_cast<char>(c));
+        }
+
+        if (feof(file.get())) {
+            return *line_length != 0;
+        } else if (ferror(file.get())) {
+            throw_system_error("fread()");
+        } else {
+            throw std::runtime_error("fgetc() returned EOF without setting anything");
+        }
+
+        return std::nullopt;
+    };
+
+    import_logcat_entries(logcat_entries, ignore_buffer_lines, [&](char line[MAX_LOGCAT_LINE_SIZE], size_t* line_length) {
+        *line_length = 0;
+
+        while (true) {
+            int c = fgetc(file.get());
+            std::optional<bool> ret = handle_char(line, line_length, c);
+            if (ret) {
+                return *ret;
+            }
+        }
+    });
+}
+
+static inline void import_logcat_entries_from_clipboard(LogcatEntries& logcat_entries, bool ignore_buffer_lines) {
+    const char* text = ImGui::GetClipboardText();
+
+    import_logcat_entries(logcat_entries, ignore_buffer_lines, [&](char line[MAX_LOGCAT_LINE_SIZE], size_t* line_length) {
+        if (!text) {
+            return false;
+        }
+
+        const char* newline_offset = strchr(text, '\n');
+        *line_length = newline_offset ? static_cast<size_t>(newline_offset - text) : strlen(text);
+
+        if (*line_length > MAX_LOGCAT_LINE_SIZE) {
+            throw std::runtime_error("Received line longer than 512k");
+        }
+
+        memcpy(line, text, *line_length);
+        text = newline_offset ? &newline_offset[1] : nullptr;
+        return true;
+    });
+}
+
+static void import_logcat_entries(LogcatEntries& logcat_entries, bool ignore_buffer_lines, auto cb) {
+    char line[MAX_LOGCAT_LINE_SIZE];
+    size_t line_length;
+    Buffer buffer = Buffer::Unknown;
+
+    while (cb(line, &line_length)) {
+        if (line_length == 0) {
+            continue;
+        }
+
+        std::optional<LogcatEntry> logcat_entry = try_parse_logcat_entry(line, line_length, buffer);
+        if (logcat_entry) {
+            logcat_entries.push_back(std::move(*logcat_entry));
+            continue;
+        }
+
+        std::optional<Buffer> new_buffer = try_parse_buffer(line, line_length);
+        if (new_buffer) {
+            if (!ignore_buffer_lines) {
+                buffer = *new_buffer;
+            }
+            continue;
+        }
+
+        throw std::invalid_argument(std::string("Cannot parse line: ") + std::string(line, line_length));
+    }
+}
+
+static inline std::optional<File> open_file_picker() {
+    nfdchar_t* path;
+    nfdfilteritem_t filters[1] = {{"Log file", "log"}};
+    nfdresult_t res = NFD_OpenDialog(&path, filters, 1, nullptr);
+
+    if (res == NFD_OKAY) {
+        try {
+            File file(path, "r");
+            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 {
+        // ignore error when failing to open the file picker
+    }
+
+    return std::nullopt;
+}

fragments/import.h

@@ -0,0 +1,5 @@
+#pragma once
+
+class LogcatEntries; // forward declaration from ../logcat_entry.h
+
+void import_fragment(LogcatEntries& logcat_entries);

logcat_entry.cpp

@@ -8,7 +8,7 @@
 #include "pcre2_wrapper.h"
 
 static const Pcre2Regex LogcatEntryRegex(
-    "^ *(\\d+)(?:\\.\\d+)?" // time
+    "^ *(?:(\\d+)(?:\\.\\d+)?|(\\d{4,})-(\\d{2})-(\\d{2}) (\\d{2}):(\\d{2}):(\\d{2}))" // time and date
     "(?: +([\\w\\d._-]+))?" // optional user
     " +(\\d+)" // pid
     " +(\\d+)" // tid
@@ -22,6 +22,7 @@ static inline char to_char(Priority priority);
 static inline std::string rightpad(const std::string& str, size_t characters);
 
 static inline Priority priority_from(char c);
+static inline int to_int(const char* str, const char* expected_end);
 static inline long to_long(const char* str, const char* expected_end);
 static unsigned long long to_ull(const char* str, const char* expected_end);
 
@@ -78,7 +79,7 @@ std::string to_string(const LogcatEntry& logcat_entry) {
 
 
 std::optional<LogcatEntry> try_parse_logcat_entry(char* buf, size_t length, Buffer buffer) {
-    regmatch_t matches[8];
+    regmatch_t matches[14];
     matches[0].rm_so = 0;
     matches[0].rm_eo = static_cast<regoff_t>(length);
     if (static_cast<size_t>(matches[0].rm_eo) != length) {
@@ -90,6 +91,7 @@ std::optional<LogcatEntry> try_parse_logcat_entry(char* buf, size_t length, Buff
     }
 
     auto group_exists = [](const regmatch_t& match) { return match.rm_so > -1 && match.rm_eo > -1; };
+    auto group_int = [&](const regmatch_t& match) { return to_int(&buf[match.rm_so], &buf[match.rm_eo]); };
     auto group_long = [&](const regmatch_t& match) { return to_long(&buf[match.rm_so], &buf[match.rm_eo]); };
     auto group_ull = [&](const regmatch_t& match) { return to_ull(&buf[match.rm_so], &buf[match.rm_eo]); };
     auto group_string = [&](const regmatch_t& match) { return std::string(&buf[match.rm_so], static_cast<size_t>(match.rm_eo - match.rm_so)); };
@@ -98,17 +100,33 @@ std::optional<LogcatEntry> try_parse_logcat_entry(char* buf, size_t length, Buff
     // if pcre2 gives us negative offsets then i'll die
     LogcatEntry logcat_entry = {
         .buffer   = buffer,
-        // time to be set at the end
-        .user     = group_exists(matches[2]) ? std::optional(group_string(matches[2])) : std::nullopt,
-        .pid      = group_ull(matches[3]),
-        .tid      = group_ull(matches[4]),
-        .priority = group_priority(matches[5]),
-        .tag      = group_string(matches[6]),
-        .message  = group_string(matches[7]),
+        // time to be set later
+        .user     = group_exists(matches[8]) ? std::optional(group_string(matches[8])) : std::nullopt,
+        .pid      = group_ull(matches[9]),
+        .tid      = group_ull(matches[10]),
+        .priority = group_priority(matches[11]),
+        .tag      = group_string(matches[12]),
+        .message  = group_string(matches[13]),
     };
 
+    if (group_exists(matches[1])) {
         time_t time = group_long(matches[1]);
         localtime_r(&time, &logcat_entry.time);
+    } else {
+        struct tm tm = {
+            .tm_sec = group_int(matches[7]),
+            .tm_min = group_int(matches[6]),
+            .tm_hour = group_int(matches[5]),
+            .tm_mday = group_int(matches[4]),
+            .tm_mon = group_int(matches[3]),
+            .tm_year = group_int(matches[2]) - 1900,
+            .tm_isdst = -1,
+            .tm_gmtoff = 0,
+        };
+        time_t time = mktime(&tm) + tm.tm_gmtoff; // for some reason you have to add the local time offset?
+        localtime_r(&time, &logcat_entry.time);
+    }
+
     return std::move(logcat_entry);
 }
 
@@ -237,6 +255,16 @@ static inline Priority priority_from(char c) {
     }
 }
 
+static inline int to_int(const char* str, const char* expected_end) {
+    long res = to_long(str, expected_end);
+    if (res > INT_MAX) {
+        throw std::overflow_error(std::string(str) + " is too big");
+    } else if (res < INT_MIN) {
+        throw std::underflow_error(std::string(str) + " is too small");
+    }
+    return static_cast<int>(res);
+}
+
 static inline long to_long(const char* str, const char* expected_end) {
     char* endptr;
 

logcat_entry.h

@@ -7,6 +7,8 @@
 
 struct Config; // forward declaration from config.h
 
+#define MAX_LOGCAT_LINE_SIZE 512 * 1024
+
 enum class Buffer {
     Unknown = 0b1,
     Main = 0b10,

logcat_thread.cpp

@@ -26,7 +26,7 @@ static void mark_nonblock(int fd) {
     }
 }
 
-static inline void look_for_newlines(char buf[NEWLINE_BUF_SIZE], size_t* used, size_t previous_used,
+static inline void look_for_newlines(char buf[MAX_LOGCAT_LINE_SIZE], size_t* used, size_t previous_used,
         void(LogcatThread::*handle_line)(char*, size_t, bool), LogcatThread* logcat_thread, bool is_stdout) {
     size_t search_offset = previous_used;
     size_t real_offset = 0;
@@ -57,7 +57,7 @@ static inline void look_for_newlines(char buf[NEWLINE_BUF_SIZE], size_t* used, s
 static inline void handle_fd(int fd, char* buf, size_t* used,
         void(LogcatThread::*handle_line)(char*, size_t, bool), LogcatThread* logcat_thread, bool is_stdout) {
     while (true) {
-        ssize_t read_size_u = read(fd, &buf[*used], (NEWLINE_BUF_SIZE - *used) * sizeof(char));
+        ssize_t read_size_u = read(fd, &buf[*used], (MAX_LOGCAT_LINE_SIZE - *used) * sizeof(char));
         if (read_size_u == 0) {
             return;
         } else if (read_size_u < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) {
@@ -66,7 +66,7 @@ static inline void handle_fd(int fd, char* buf, size_t* used,
             throw_system_error("read()");
         }
         size_t read_size = static_cast<size_t>(read_size_u) / sizeof(char);
-        if (*used + read_size > NEWLINE_BUF_SIZE) {
+        if (*used + read_size > MAX_LOGCAT_LINE_SIZE) {
             throw std::runtime_error("Received line longer than 512k");
         }
         size_t previous_used = *used;

logcat_thread.h

@@ -7,7 +7,6 @@
 #include "logcat_entry.h"
 
 typedef std::variant<LogEntry, LogcatEntry> LogcatThreadItem;
-#define NEWLINE_BUF_SIZE 512 * 1024
 
 enum class LogcatProcessRequest {
     None,
@@ -54,9 +53,9 @@ private:
     int _stderr_read_fd = -1;
     int _stderr_write_fd = -1;
 
-    char _stdout_buf[NEWLINE_BUF_SIZE];
+    char _stdout_buf[MAX_LOGCAT_LINE_SIZE];
     size_t _stdout_buf_used = 0;
-    char _stderr_buf[NEWLINE_BUF_SIZE];
+    char _stderr_buf[MAX_LOGCAT_LINE_SIZE];
     size_t _stderr_buf_used = 0;
 
     pid_t _logcat_pid = -1;

windows/main.cpp

@@ -9,6 +9,7 @@
 #include "../logcat_entry.h"
 #include "../logcat_thread.h"
 #include "../fragments/export.h"
+#include "../fragments/import.h"
 #include "main.h"
 
 static inline void render_table_item_context_menu(const LogcatEntry& logcat_entry) {
@@ -164,10 +165,12 @@ void main_window(bool latest_log_entries_read, ImFont* monospace_font, LogcatThr
 
     ImGui::SameLine();
     ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);
+
     ImGui::SameLine();
     if (ImGui::Button("Clear")) {
         logcat_entries.clear();
     }
+
     ImGui::SameLine();
     if (ImGui::Button("Export")) {
         ImGui::OpenPopup("export_logcat");
@@ -177,6 +180,15 @@ void main_window(bool latest_log_entries_read, ImFont* monospace_font, LogcatThr
         ImGui::EndPopup();
     }
 
+    ImGui::SameLine();
+    if (ImGui::Button("Import")) {
+        ImGui::OpenPopup("import_logcat");
+    }
+    if (ImGui::BeginPopup("import_logcat")) {
+        import_fragment(logcat_entries);
+        ImGui::EndPopup();
+    }
+
     ImGui::Separator();
     // copied from imgui/imgui_demo.cpp: [SECTION] Example App: Debug Console / ShowExampleAppConsole()
     // and [SECTION] Example App: Long Text / ShowExampleAppLongText()