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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/config.h>
#include <sal/log.hxx>
#include <deque>
#include <IconThemeScanner.hxx>
#include <osl/file.hxx>
#include <salhelper/linkhelper.hxx>
#include <unotools/pathoptions.hxx>
#include <vcl/IconThemeInfo.hxx>
#include <o3tl/string_view.hxx>
namespace vcl {
namespace {
// set the status of a file. Returns false if the status could not be determined.
bool set_file_status(osl::FileStatus& status, const OUString& file)
{
osl::DirectoryItem dirItem;
osl::FileBase::RC retvalGet = osl::DirectoryItem::get(file, dirItem);
if (retvalGet != osl::FileBase::E_None) {
SAL_WARN("vcl.app", "Could not determine status for file '" << file << "'.");
return false;
}
osl::FileBase::RC retvalStatus = dirItem.getFileStatus(status);
if (retvalStatus != osl::FileBase::E_None) {
SAL_WARN("vcl.app", "Could not determine status for file '" << file << "'.");
return false;
}
return true;
}
OUString convert_to_absolute_path(const OUString& path)
{
salhelper::LinkResolver resolver(0);
osl::FileBase::RC rc = resolver.fetchFileStatus(path);
if (rc != osl::FileBase::E_None) {
SAL_WARN("vcl.app", "Could not resolve path '" << path << "' to search for icon themes.");
if (rc == osl::FileBase::E_MULTIHOP)
{
throw std::runtime_error("Provided a recursive symlink to an icon theme directory that could not be resolved.");
}
}
return resolver.m_aStatus.getFileURL();
}
}
IconThemeScanner::IconThemeScanner()
{}
void IconThemeScanner::ScanDirectoryForIconThemes(std::u16string_view paths)
{
mFoundIconThemes.clear();
std::deque<OUString> aPaths;
sal_Int32 nIndex = 0;
do
{
aPaths.push_front(OUString(o3tl::getToken(paths, 0, ';', nIndex)));
}
while (nIndex >= 0);
for (const auto& path : aPaths)
{
osl::FileStatus fileStatus(osl_FileStatus_Mask_Type);
bool couldSetFileStatus = set_file_status(fileStatus, path);
if (!couldSetFileStatus) {
continue;
}
if (!fileStatus.isDirectory()) {
SAL_INFO("vcl.app", "Cannot search for icon themes in '"<< path << "'. It is not a directory.");
continue;
}
std::vector<OUString> iconThemePaths = ReadIconThemesFromPath(path);
if (iconThemePaths.empty()) {
SAL_WARN("vcl.app", "Could not find any icon themes in the provided directory ('" <<path<<"'.");
continue;
}
for (auto const& iconThemePath : iconThemePaths)
{
AddIconThemeByPath(iconThemePath);
}
}
}
bool
IconThemeScanner::AddIconThemeByPath(const OUString &url)
{
if (!IconThemeInfo::UrlCanBeParsed(url)) {
return false;
}
SAL_INFO("vcl.app", "Found a file that seems to be an icon theme: '" << url << "'" );
IconThemeInfo newTheme(url);
mFoundIconThemes.push_back(newTheme);
SAL_INFO("vcl.app", "Adding the file as '" << newTheme.GetDisplayName() <<
"' with id '" << newTheme.GetThemeId() << "'.");
return true;
}
/*static*/ std::vector<OUString>
IconThemeScanner::ReadIconThemesFromPath(const OUString& dir)
{
std::vector<OUString> found;
SAL_INFO("vcl.app", "Scanning directory '" << dir << " for icon themes.");
osl::Directory dirToScan(dir);
osl::FileBase::RC retvalOpen = dirToScan.open();
if (retvalOpen != osl::FileBase::E_None) {
return found;
}
osl::DirectoryItem directoryItem;
while (dirToScan.getNextItem(directoryItem) == osl::FileBase::E_None) {
osl::FileStatus status(osl_FileStatus_Mask_Type | osl_FileStatus_Mask_FileURL | osl_FileStatus_Mask_FileName);
osl::FileBase::RC retvalStatus = directoryItem.getFileStatus(status);
if (retvalStatus != osl::FileBase::E_None) {
continue;
}
OUString filename = convert_to_absolute_path(status.getFileURL());
if (!FileIsValidIconTheme(filename)) {
continue;
}
found.push_back(filename);
}
return found;
}
/*static*/ bool
IconThemeScanner::FileIsValidIconTheme(const OUString& filename)
{
// check whether we can construct an IconThemeInfo from it
if (!IconThemeInfo::UrlCanBeParsed(filename)) {
SAL_INFO("vcl.app", "File '" << filename << "' does not seem to be an icon theme.");
return false;
}
osl::FileStatus fileStatus(osl_FileStatus_Mask_Type);
bool couldSetFileStatus = set_file_status(fileStatus, filename);
if (!couldSetFileStatus) {
return false;
}
if (!fileStatus.isRegular()) {
return false;
}
return true;
}
bool
IconThemeScanner::IconThemeIsInstalled(const OUString& themeId) const
{
return IconThemeInfo::IconThemeIsInVector(mFoundIconThemes, themeId);
}
/*static*/ std::shared_ptr<IconThemeScanner>
IconThemeScanner::Create(std::u16string_view path)
{
std::shared_ptr<IconThemeScanner> retval(new IconThemeScanner);
retval->ScanDirectoryForIconThemes(path);
return retval;
}
/*static*/ OUString
IconThemeScanner::GetStandardIconThemePath()
{
SvtPathOptions aPathOptions;
return aPathOptions.GetIconsetPath();
}
namespace
{
class SameTheme
{
private:
const OUString& m_rThemeId;
public:
explicit SameTheme(const OUString &rThemeId) : m_rThemeId(rThemeId) {}
bool operator()(const vcl::IconThemeInfo &rInfo)
{
return m_rThemeId == rInfo.GetThemeId();
}
};
}
const vcl::IconThemeInfo&
IconThemeScanner::GetIconThemeInfo(const OUString& themeId)
{
std::vector<IconThemeInfo>::iterator info = std::find_if(mFoundIconThemes.begin(), mFoundIconThemes.end(),
SameTheme(themeId));
if (info == mFoundIconThemes.end()) {
SAL_WARN("vcl.app", "Requested information for icon theme with id '" << themeId
<< "' which does not exist.");
throw std::runtime_error("Requested information on not-installed icon theme");
}
return *info;
}
} // end namespace vcl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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