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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "HexEditorWidget.h"
28#include <AK/Optional.h>
29#include <AK/StringBuilder.h>
30#include <LibCore/File.h>
31#include <LibGUI/AboutDialog.h>
32#include <LibGUI/Action.h>
33#include <LibGUI/BoxLayout.h>
34#include <LibGUI/Button.h>
35#include <LibGUI/FilePicker.h>
36#include <LibGUI/FontDatabase.h>
37#include <LibGUI/InputBox.h>
38#include <LibGUI/Menu.h>
39#include <LibGUI/MenuBar.h>
40#include <LibGUI/MessageBox.h>
41#include <LibGUI/StatusBar.h>
42#include <LibGUI/TextBox.h>
43#include <LibGUI/TextEditor.h>
44#include <LibGUI/ToolBar.h>
45#include <stdio.h>
46
47HexEditorWidget::HexEditorWidget()
48{
49 set_layout(make<GUI::VerticalBoxLayout>());
50 layout()->set_spacing(0);
51
52 m_editor = add<HexEditor>();
53
54 m_editor->on_status_change = [this](int position, HexEditor::EditMode edit_mode, int selection_start, int selection_end) {
55 m_statusbar->set_text(0, String::format("Offset: %8X", position));
56 m_statusbar->set_text(1, String::format("Edit Mode: %s", edit_mode == HexEditor::EditMode::Hex ? "Hex" : "Text"));
57 m_statusbar->set_text(2, String::format("Selection Start: %d", selection_start));
58 m_statusbar->set_text(3, String::format("Selection End: %d", selection_end));
59 m_statusbar->set_text(4, String::format("Selected Bytes: %d", (selection_end - selection_start) + 1));
60 };
61
62 m_editor->on_change = [this] {
63 bool was_dirty = m_document_dirty;
64 m_document_dirty = true;
65 if (!was_dirty)
66 update_title();
67 };
68
69 m_statusbar = add<GUI::StatusBar>(5);
70
71 m_new_action = GUI::Action::create("New", { Mod_Ctrl, Key_N }, Gfx::Bitmap::load_from_file("/res/icons/16x16/new.png"), [this](const GUI::Action&) {
72 if (m_document_dirty) {
73 auto save_document_first_box = GUI::MessageBox::construct("Save Document First?", "Warning", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel, window());
74 auto save_document_first_result = save_document_first_box->exec();
75
76 if (save_document_first_result != GUI::Dialog::ExecResult::ExecOK)
77 return;
78 m_save_action->activate();
79 }
80
81 auto input_box = GUI::InputBox::construct("Enter new file size:", "New file size", this);
82 if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
83 auto valid = false;
84 auto file_size = input_box->text_value().to_int(valid);
85 if (valid && file_size > 0) {
86 m_document_dirty = false;
87 m_editor->set_buffer(ByteBuffer::create_zeroed(file_size));
88 set_path(FileSystemPath());
89 update_title();
90 } else {
91 GUI::MessageBox::show("Invalid file size entered.", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
92 }
93 }
94 });
95
96 m_open_action = GUI::CommonActions::make_open_action([this](auto&) {
97 Optional<String> open_path = GUI::FilePicker::get_open_filepath();
98
99 if (!open_path.has_value())
100 return;
101
102 open_file(open_path.value());
103 });
104
105 m_save_action = GUI::Action::create("Save", { Mod_Ctrl, Key_S }, Gfx::Bitmap::load_from_file("/res/icons/16x16/save.png"), [&](const GUI::Action&) {
106 if (!m_path.is_empty()) {
107 if (!m_editor->write_to_file(m_path)) {
108 GUI::MessageBox::show("Unable to save file.\n", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
109 } else {
110 m_document_dirty = false;
111 update_title();
112 }
113 return;
114 }
115
116 m_save_as_action->activate();
117 });
118
119 m_save_as_action = GUI::Action::create("Save as...", { Mod_Ctrl | Mod_Shift, Key_S }, Gfx::Bitmap::load_from_file("/res/icons/16x16/save.png"), [this](const GUI::Action&) {
120 Optional<String> save_path = GUI::FilePicker::get_save_filepath(m_name.is_null() ? "Untitled" : m_name, m_extension.is_null() ? "bin" : m_extension);
121 if (!save_path.has_value())
122 return;
123
124 if (!m_editor->write_to_file(save_path.value())) {
125 GUI::MessageBox::show("Unable to save file.\n", "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
126 return;
127 }
128
129 m_document_dirty = false;
130 set_path(FileSystemPath(save_path.value()));
131 dbg() << "Wrote document to " << save_path.value();
132 });
133
134 auto menubar = make<GUI::MenuBar>();
135 auto app_menu = GUI::Menu::construct("Hex Editor");
136 app_menu->add_action(*m_new_action);
137 app_menu->add_action(*m_open_action);
138 app_menu->add_action(*m_save_action);
139 app_menu->add_action(*m_save_as_action);
140 app_menu->add_separator();
141 app_menu->add_action(GUI::CommonActions::make_quit_action([this](auto&) {
142 if (!request_close())
143 return;
144 GUI::Application::the().quit(0);
145 }));
146 menubar->add_menu(move(app_menu));
147
148 auto bytes_per_row_menu = GUI::Menu::construct("Bytes Per Row");
149 for (int i = 8; i <= 32; i += 8) {
150 bytes_per_row_menu->add_action(GUI::Action::create(String::number(i), [this, i](auto&) {
151 m_editor->set_bytes_per_row(i);
152 m_editor->update();
153 }));
154 }
155
156 m_goto_decimal_offset_action = GUI::Action::create("Go To Offset (Decimal)...", { Mod_Ctrl | Mod_Shift, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"), [this](const GUI::Action&) {
157 auto input_box = GUI::InputBox::construct("Enter Decimal offset:", "Go To", this);
158 if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
159 auto valid = false;
160 auto new_offset = input_box->text_value().to_int(valid);
161 if (valid) {
162 m_editor->set_position(new_offset);
163 }
164 }
165 });
166
167 m_goto_hex_offset_action = GUI::Action::create("Go To Offset (Hex)...", { Mod_Ctrl, Key_G }, Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"), [this](const GUI::Action&) {
168 auto input_box = GUI::InputBox::construct("Enter Hex offset:", "Go To", this);
169 if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
170 auto new_offset = strtol(input_box->text_value().characters(), nullptr, 16);
171 m_editor->set_position(new_offset);
172 }
173 });
174
175 auto edit_menu = GUI::Menu::construct("Edit");
176 edit_menu->add_action(GUI::Action::create("Fill selection...", { Mod_Ctrl, Key_B }, [&](const GUI::Action&) {
177 auto input_box = GUI::InputBox::construct("Fill byte (hex):", "Fill Selection", this);
178 if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty()) {
179 auto fill_byte = strtol(input_box->text_value().characters(), nullptr, 16);
180 m_editor->fill_selection(fill_byte);
181 }
182 }));
183 edit_menu->add_separator();
184 edit_menu->add_action(*m_goto_decimal_offset_action);
185 edit_menu->add_action(*m_goto_hex_offset_action);
186 edit_menu->add_separator();
187 edit_menu->add_action(GUI::Action::create("Copy Hex", { Mod_Ctrl, Key_C }, [&](const GUI::Action&) {
188 m_editor->copy_selected_hex_to_clipboard();
189 }));
190 edit_menu->add_action(GUI::Action::create("Copy Text", { Mod_Ctrl | Mod_Shift, Key_C }, [&](const GUI::Action&) {
191 m_editor->copy_selected_text_to_clipboard();
192 }));
193 edit_menu->add_separator();
194 edit_menu->add_action(GUI::Action::create("Copy As C Code", { Mod_Alt | Mod_Shift, Key_C }, [&](const GUI::Action&) {
195 m_editor->copy_selected_hex_to_clipboard_as_c_code();
196 }));
197 menubar->add_menu(move(edit_menu));
198
199 auto view_menu = GUI::Menu::construct("View");
200 view_menu->add_submenu(move(bytes_per_row_menu));
201 menubar->add_menu(move(view_menu));
202
203 auto help_menu = GUI::Menu::construct("Help");
204 help_menu->add_action(GUI::Action::create("About", [&](const GUI::Action&) {
205 GUI::AboutDialog::show("Hex Editor", Gfx::Bitmap::load_from_file("/res/icons/32x32/app-hexeditor.png"), window());
206 }));
207 menubar->add_menu(move(help_menu));
208
209 GUI::Application::the().set_menubar(move(menubar));
210
211 m_editor->set_focus(true);
212}
213
214HexEditorWidget::~HexEditorWidget()
215{
216}
217
218void HexEditorWidget::set_path(const FileSystemPath& file)
219{
220 m_path = file.string();
221 m_name = file.title();
222 m_extension = file.extension();
223 update_title();
224}
225
226void HexEditorWidget::update_title()
227{
228 StringBuilder builder;
229 builder.append("Hex Editor: ");
230 builder.append(m_path);
231 if (m_document_dirty)
232 builder.append(" (*)");
233 window()->set_title(builder.to_string());
234}
235
236void HexEditorWidget::open_file(const String& path)
237{
238 auto file = Core::File::construct(path);
239 if (!file->open(Core::IODevice::ReadOnly)) {
240 GUI::MessageBox::show(String::format("Opening \"%s\" failed: %s", path.characters(), strerror(errno)), "Error", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window());
241 return;
242 }
243
244 m_document_dirty = false;
245 m_editor->set_buffer(file->read_all()); // FIXME: On really huge files, this is never going to work. Should really create a framework to fetch data from the file on-demand.
246 set_path(FileSystemPath(path));
247}
248
249bool HexEditorWidget::request_close()
250{
251 if (!m_document_dirty)
252 return true;
253 auto result = GUI::MessageBox::show("The file has been modified. Quit without saving?", "Quit without saving?", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel, window());
254 return result == GUI::MessageBox::ExecOK;
255}