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Applications: Move to Userland/Applications/

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Andreas Kling 2021-01-12 12:05:23 +01:00
parent aa939c4b4b
commit dc28c07fa5
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Userland/Applications/SpaceAnalyzer/main.cpp Normal file
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/*
* Copyright (c) 2021, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "TreeMapWidget.h"
#include <AK/Queue.h>
#include <AK/QuickSort.h>
#include <AK/RefCounted.h>
#include <Applications/SpaceAnalyzer/SpaceAnalyzerGML.h>
#include <LibCore/DirIterator.h>
#include <LibCore/File.h>
#include <LibGUI/AboutDialog.h>
#include <LibGUI/Application.h>
#include <LibGUI/BreadcrumbBar.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Menu.h>
#include <LibGUI/MenuBar.h>
#include <LibGUI/StatusBar.h>
#include <sys/stat.h>
static const char* APP_NAME = "Space Analyzer";
struct TreeNode : public SpaceAnalyzer::TreeMapNode {
TreeNode(String name)
: m_name(move(name)) {};
virtual String name() const { return m_name; }
virtual int64_t area() const { return m_area; }
virtual size_t num_children() const
{
if (m_children) {
return m_children->size();
}
return 0;
}
virtual const TreeNode& child_at(size_t i) const { return m_children->at(i); }
virtual void sort_children_by_area() const
{
if (m_children) {
Vector<TreeNode>* children = const_cast<Vector<TreeNode>*>(m_children.ptr());
quick_sort(*children, [](auto& a, auto& b) { return b.m_area < a.m_area; });
}
}
String m_name;
int64_t m_area { 0 };
OwnPtr<Vector<TreeNode>> m_children;
};
struct Tree : public SpaceAnalyzer::TreeMap {
Tree(String root_name)
: m_root(move(root_name)) {};
virtual ~Tree() {};
TreeNode m_root;
virtual const SpaceAnalyzer::TreeMapNode& root() const override
{
return m_root;
};
};
struct MountInfo {
String mount_point;
String source;
};
static void fill_mounts(Vector<MountInfo>& output)
{
// Output info about currently mounted filesystems.
auto df = Core::File::construct("/proc/df");
if (!df->open(Core::IODevice::ReadOnly)) {
fprintf(stderr, "Failed to open /proc/df: %s\n", df->error_string());
return;
}
auto content = df->read_all();
auto json = JsonValue::from_string(content);
ASSERT(json.has_value());
json.value().as_array().for_each([&output](auto& value) {
auto filesystem_object = value.as_object();
MountInfo mount_info;
mount_info.mount_point = filesystem_object.get("mount_point").to_string();
mount_info.source = filesystem_object.get("source").as_string_or("none");
output.append(mount_info);
});
}
static MountInfo* find_mount_for_path(String path, Vector<MountInfo>& mounts)
{
MountInfo* result = nullptr;
size_t length = 0;
for (auto& mount_info : mounts) {
String& mount_point = mount_info.mount_point;
if (path.starts_with(mount_point)) {
if (!result || mount_point.length() > length) {
result = &mount_info;
length = mount_point.length();
}
}
}
return result;
}
static long long int update_totals(TreeNode& node)
{
long long int result = 0;
if (node.m_children) {
for (auto& child : *node.m_children) {
result += update_totals(child);
}
node.m_area = result;
} else {
result = node.m_area;
}
return result;
}
struct QueueEntry {
QueueEntry(String path, TreeNode* node)
: path(move(path))
, node(node) {};
String path;
TreeNode* node { nullptr };
};
static void populate_filesize_tree(TreeNode& root, Vector<MountInfo>& mounts, HashMap<int, int>& error_accumulator)
{
ASSERT(!root.m_name.ends_with("/"));
Queue<QueueEntry> queue;
queue.enqueue(QueueEntry(root.m_name, &root));
StringBuilder builder = StringBuilder();
builder.append(root.m_name);
builder.append("/");
MountInfo* root_mount_info = find_mount_for_path(builder.to_string(), mounts);
if (!root_mount_info) {
return;
}
while (!queue.is_empty()) {
QueueEntry queue_entry = queue.dequeue();
builder.clear();
builder.append(queue_entry.path);
builder.append("/");
MountInfo* mount_info = find_mount_for_path(builder.to_string(), mounts);
if (!mount_info || (mount_info != root_mount_info && mount_info->source != root_mount_info->source)) {
continue;
}
Core::DirIterator dir_iterator(builder.to_string(), Core::DirIterator::SkipParentAndBaseDir);
if (dir_iterator.has_error()) {
int error_sum = error_accumulator.get(dir_iterator.error()).value_or(0);
error_accumulator.set(dir_iterator.error(), error_sum + 1);
} else {
queue_entry.node->m_children = make<Vector<TreeNode>>();
while (dir_iterator.has_next()) {
queue_entry.node->m_children->append(TreeNode(dir_iterator.next_path()));
}
for (auto& child : *queue_entry.node->m_children) {
String& name = child.m_name;
int name_len = name.length();
builder.append(name);
struct stat st;
int stat_result = lstat(builder.to_string().characters(), &st);
if (stat_result < 0) {
int error_sum = error_accumulator.get(errno).value_or(0);
error_accumulator.set(errno, error_sum + 1);
} else {
if (S_ISDIR(st.st_mode)) {
queue.enqueue(QueueEntry(builder.to_string(), &child));
} else {
child.m_area = st.st_size;
}
}
builder.trim(name_len);
}
}
}
update_totals(root);
}
static void analyze(RefPtr<Tree> tree, SpaceAnalyzer::TreeMapWidget& treemapwidget, GUI::StatusBar& statusbar)
{
// Build an in-memory tree mirroring the filesystem and for each node
// calculate the sum of the file size for all its descendants.
TreeNode* root = &tree->m_root;
Vector<MountInfo> mounts;
fill_mounts(mounts);
HashMap<int, int> error_accumulator;
populate_filesize_tree(*root, mounts, error_accumulator);
// Display an error summary in the statusbar.
if (!error_accumulator.is_empty()) {
StringBuilder builder;
bool first = true;
builder.append("Some directories were not analyzed: ");
for (auto& key : error_accumulator.keys()) {
if (!first) {
builder.append(", ");
}
builder.append(strerror(key));
builder.append(" (");
int value = error_accumulator.get(key).value();
builder.append(String::number(value));
if (value == 1) {
builder.append(" time");
} else {
builder.append(" times");
}
builder.append(")");
first = false;
}
statusbar.set_text(builder.to_string());
} else {
statusbar.set_text("No errors");
}
treemapwidget.set_tree(tree);
}
int main(int argc, char* argv[])
{
auto app = GUI::Application::construct(argc, argv);
RefPtr<Tree> tree = adopt(*new Tree(""));
// Configure application window.
auto app_icon = GUI::Icon::default_icon("app-space-analyzer");
auto window = GUI::Window::construct();
window->set_title(APP_NAME);
window->resize(640, 480);
window->set_icon(app_icon.bitmap_for_size(16));
// Load widgets.
auto& mainwidget = window->set_main_widget<GUI::Widget>();
mainwidget.load_from_gml(space_analyzer_gml);
auto& breadcrumbbar = *mainwidget.find_descendant_of_type_named<GUI::BreadcrumbBar>("breadcrumb_bar");
auto& treemapwidget = *mainwidget.find_descendant_of_type_named<SpaceAnalyzer::TreeMapWidget>("tree_map");
auto& statusbar = *mainwidget.find_descendant_of_type_named<GUI::StatusBar>("status_bar");
// Configure the menubar.
auto menubar = GUI::MenuBar::construct();
auto& app_menu = menubar->add_menu(APP_NAME);
app_menu.add_action(GUI::Action::create("Analyze", [&](auto&) {
analyze(tree, treemapwidget, statusbar);
}));
app_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
app->quit();
}));
auto& help_menu = menubar->add_menu("Help");
help_menu.add_action(GUI::CommonActions::make_about_action(APP_NAME, app_icon, window));
app->set_menubar(move(menubar));
// Configure event handlers.
breadcrumbbar.on_segment_click = [&](size_t index) {
ASSERT(index < treemapwidget.path_size());
treemapwidget.set_viewpoint(index);
};
treemapwidget.on_path_change = [&]() {
breadcrumbbar.clear_segments();
for (size_t k = 0; k < treemapwidget.path_size(); k++) {
if (k == 0) {
breadcrumbbar.append_segment("/");
} else {
const SpaceAnalyzer::TreeMapNode* node = treemapwidget.path_node(k);
breadcrumbbar.append_segment(node->name());
}
}
breadcrumbbar.set_selected_segment(treemapwidget.viewpoint());
};
// At startup automatically do an analysis of root.
analyze(tree, treemapwidget, statusbar);
window->show();
return app->exec();
}