Libraries: Create top level directory for libraries.

Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.

Libraries/LibCore/CConfigFile.cpp

@@ -0,0 +1,233 @@
+#include <AK/StringBuilder.h>
+#include <LibCore/CConfigFile.h>
+#include <LibCore/CFile.h>
+#include <LibCore/CUserInfo.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <unistd.h>
+
+NonnullRefPtr<CConfigFile> CConfigFile::get_for_app(const String& app_name)
+{
+    String home_path = get_current_user_home_path();
+    if (home_path == "/")
+        home_path = String::format("/tmp");
+    auto path = String::format("%s/%s.ini", home_path.characters(), app_name.characters());
+    return adopt(*new CConfigFile(path));
+}
+
+NonnullRefPtr<CConfigFile> CConfigFile::get_for_system(const String& app_name)
+{
+    auto path = String::format("/etc/%s.ini", app_name.characters());
+    return adopt(*new CConfigFile(path));
+}
+
+CConfigFile::CConfigFile(const String& file_name)
+    : m_file_name(file_name)
+{
+    reparse();
+}
+
+CConfigFile::~CConfigFile()
+{
+    sync();
+}
+
+void CConfigFile::reparse()
+{
+    m_groups.clear();
+
+    CFile file(m_file_name);
+    if (!file.open(CIODevice::OpenMode::ReadOnly))
+        return;
+
+    HashMap<String, String>* current_group = nullptr;
+
+    while (file.can_read_line()) {
+        auto line = file.read_line(BUFSIZ);
+        auto* cp = (const char*)line.pointer();
+
+        while (*cp && (*cp == ' ' || *cp == '\t' || *cp == '\n'))
+            ++cp;
+
+        switch (*cp) {
+        case '\0': // EOL...
+        case '#':  // Comment, skip entire line.
+        case ';':  // -||-
+            continue;
+        case '[': { // Start of new group.
+            StringBuilder builder;
+            ++cp; // Skip the '['
+            while (*cp && (*cp != ']'))
+                builder.append(*(cp++));
+            current_group = &m_groups.ensure(builder.to_string());
+            break;
+        }
+        default: { // Start of key{
+            StringBuilder key_builder;
+            StringBuilder value_builder;
+            while (*cp && (*cp != '='))
+                key_builder.append(*(cp++));
+            ++cp; // Skip the '='
+            while (*cp && (*cp != '\n'))
+                value_builder.append(*(cp++));
+            if (!current_group) {
+                // We're not in a group yet, create one with the name ""...
+                current_group = &m_groups.ensure("");
+            }
+            current_group->set(key_builder.to_string(), value_builder.to_string());
+        }
+        }
+    }
+}
+
+String CConfigFile::read_entry(const String& group, const String& key, const String& default_value) const
+{
+    if (!has_key(group, key)) {
+        const_cast<CConfigFile&>(*this).write_entry(group, key, default_value);
+        return default_value;
+    }
+    auto it = m_groups.find(group);
+    auto jt = it->value.find(key);
+    return jt->value;
+}
+
+int CConfigFile::read_num_entry(const String& group, const String& key, int default_value) const
+{
+    if (!has_key(group, key)) {
+        const_cast<CConfigFile&>(*this).write_num_entry(group, key, default_value);
+        return default_value;
+    }
+
+    bool ok;
+    int value = read_entry(group, key).to_uint(ok);
+    if (!ok)
+        return default_value;
+    return value;
+}
+
+Color CConfigFile::read_color_entry(const String& group, const String& key, Color default_value) const
+{
+    if (!has_key(group, key)) {
+        const_cast<CConfigFile&>(*this).write_color_entry(group, key, default_value);
+        return default_value;
+    }
+
+    auto shades = read_entry(group, key).split(',');
+    if (shades.size() < 3)
+        return default_value;
+    bool ok1 = true,
+         ok2 = true,
+         ok3 = true,
+         ok4 = true;
+    Color value;
+    if (shades.size() == 3) {
+        value = Color(shades[0].to_uint(ok1),
+            shades[1].to_uint(ok2),
+            shades[2].to_uint(ok3));
+    } else {
+        value = Color(shades[0].to_uint(ok1),
+            shades[1].to_uint(ok2),
+            shades[2].to_uint(ok3),
+            shades[3].to_uint(ok4));
+    }
+    if (!(ok1 && ok2 && ok3 && ok4))
+        return default_value;
+    return value;
+}
+
+bool CConfigFile::read_bool_entry(const String& group, const String& key, bool default_value) const
+{
+    return read_entry(group, key, default_value ? "1" : "0") == "1";
+}
+
+void CConfigFile::write_entry(const String& group, const String& key, const String& value)
+{
+    m_groups.ensure(group).ensure(key) = value;
+    m_dirty = true;
+}
+
+void CConfigFile::write_num_entry(const String& group, const String& key, int value)
+{
+    write_entry(group, key, String::number(value));
+}
+void CConfigFile::write_bool_entry(const String& group, const String& key, bool value)
+{
+    write_entry(group, key, value ? "1" : "0");
+}
+void CConfigFile::write_color_entry(const String& group, const String& key, Color value)
+{
+    write_entry(group, key, String::format("%d,%d,%d,%d", value.red(), value.green(), value.blue(), value.alpha()));
+}
+
+bool CConfigFile::sync()
+{
+    if (!m_dirty)
+        return true;
+
+    FILE* fp = fopen(m_file_name.characters(), "wb");
+    if (!fp)
+        return false;
+
+    for (auto& it : m_groups) {
+        fprintf(fp, "[%s]\n", it.key.characters());
+        for (auto& jt : it.value)
+            fprintf(fp, "%s=%s\n", jt.key.characters(), jt.value.characters());
+        fprintf(fp, "\n");
+    }
+
+    fclose(fp);
+
+    m_dirty = false;
+    return true;
+}
+
+void CConfigFile::dump() const
+{
+    for (auto& it : m_groups) {
+        printf("[%s]\n", it.key.characters());
+        for (auto& jt : it.value)
+            printf("%s=%s\n", jt.key.characters(), jt.value.characters());
+        printf("\n");
+    }
+}
+
+Vector<String> CConfigFile::groups() const
+{
+    return m_groups.keys();
+}
+
+Vector<String> CConfigFile::keys(const String& group) const
+{
+    auto it = m_groups.find(group);
+    if (it == m_groups.end())
+        return {};
+    return it->value.keys();
+}
+
+bool CConfigFile::has_key(const String& group, const String& key) const
+{
+    auto it = m_groups.find(group);
+    if (it == m_groups.end())
+        return {};
+    return it->value.contains(key);
+}
+
+bool CConfigFile::has_group(const String& group) const
+{
+    return m_groups.contains(group);
+}
+
+void CConfigFile::remove_group(const String& group)
+{
+    m_groups.remove(group);
+    m_dirty = true;
+}
+
+void CConfigFile::remove_entry(const String& group, const String& key)
+{
+    auto it = m_groups.find(group);
+    if (it == m_groups.end())
+        return;
+    it->value.remove(key);
+    m_dirty = true;
+}