Utils: Introduce new class OsSpecificAspects.

This is basically a generalization of HostOsInfo for
a system that might not be the host system. HostOsInfo
is now implemented in terms of the new class.
Prospective use case: Untie Utils::Environment from
the host system.

Change-Id: If333b96674652109fcb0ad79f75aaaf5e86e17e3
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

9 files changed, 115 insertions, 38 deletions

diff --git a/src/libs/utils/environment.cpp b/src/libs/utils/environment.cpp
index e0a19db274..9c7140b202 100644
--- a/src/libs/utils/environment.cpp
+++ b/src/libs/utils/environment.cpp
@@ -187,14 +187,14 @@ void Environment::prependOrSetPath(const QString &value)
 void Environment::prependOrSetLibrarySearchPath(const QString &value)
 {
     switch (HostOsInfo::hostOs()) {
-    case HostOsInfo::HostOsWindows: {
+    case OsTypeWindows: {
         const QChar sep = QLatin1Char(';');
         const QLatin1String path("PATH");
         prependOrSet(path, QDir::toNativeSeparators(value), QString(sep));
         break;
     }
-    case HostOsInfo::HostOsLinux:
-    case HostOsInfo::HostOsOtherUnix: {
+    case OsTypeLinux:
+    case OsTypeOtherUnix: {
         const QChar sep = QLatin1Char(':');
         const QLatin1String path("LD_LIBRARY_PATH");
         prependOrSet(path, QDir::toNativeSeparators(value), QString(sep));
diff --git a/src/libs/utils/hostosinfo.h b/src/libs/utils/hostosinfo.h
index 0bb642561b..10ad8785c8 100644
--- a/src/libs/utils/hostosinfo.h
+++ b/src/libs/utils/hostosinfo.h
@@ -32,10 +32,12 @@
 
 #include "utils_global.h"
 
+#include "osspecificaspects.h"
+
 #include <QString>
 
 #ifdef Q_OS_WIN
-#define QTC_HOST_EXE_SUFFIX ".exe"
+#define QTC_HOST_EXE_SUFFIX QTC_WIN_EXE_SUFFIX
 #else
 #define QTC_HOST_EXE_SUFFIX ""
 #endif // Q_OS_WIN
@@ -45,55 +47,54 @@ namespace Utils {
 class QTCREATOR_UTILS_EXPORT HostOsInfo
 {
 public:
-    // Add more as needed.
-    enum HostOs { HostOsWindows, HostOsLinux, HostOsMac, HostOsOtherUnix, HostOsOther };
-    static inline HostOs hostOs();
+    static inline OsType hostOs();
 
     enum HostArchitecture { HostArchitectureX86, HostArchitectureAMD64, HostArchitectureItanium,
                             HostArchitectureArm, HostArchitectureUnknown };
     static HostArchitecture hostArchitecture();
 
-    static bool isWindowsHost() { return hostOs() == HostOsWindows; }
-    static bool isLinuxHost() { return hostOs() == HostOsLinux; }
-    static bool isMacHost() { return hostOs() == HostOsMac; }
+    static bool isWindowsHost() { return hostOs() == OsTypeWindows; }
+    static bool isLinuxHost() { return hostOs() == OsTypeLinux; }
+    static bool isMacHost() { return hostOs() == OsTypeMac; }
     static inline bool isAnyUnixHost();
 
     static QString withExecutableSuffix(const QString &executable)
     {
-        QString finalName = executable;
-        if (isWindowsHost())
-            finalName += QLatin1String(QTC_HOST_EXE_SUFFIX);
-        return finalName;
+        return hostOsAspects().withExecutableSuffix(executable);
     }
 
     static Qt::CaseSensitivity fileNameCaseSensitivity()
     {
-        return isWindowsHost() ? Qt::CaseInsensitive: Qt::CaseSensitive;
+        return hostOsAspects().fileNameCaseSensitivity();
     }
 
     static QChar pathListSeparator()
     {
-        return isWindowsHost() ? QLatin1Char(';') : QLatin1Char(':');
+        return hostOsAspects().pathListSeparator();
     }
 
     static Qt::KeyboardModifier controlModifier()
     {
-        return isMacHost() ? Qt::MetaModifier : Qt::ControlModifier;
+        return hostOsAspects().controlModifier();
     }
+
+private:
+    static OsSpecificAspects hostOsAspects() { return OsSpecificAspects(hostOs()); }
 };
 
-HostOsInfo::HostOs HostOsInfo::hostOs()
+
+OsType HostOsInfo::hostOs()
 {
 #if defined(Q_OS_WIN)
-    return HostOsWindows;
+    return OsTypeWindows;
 #elif defined(Q_OS_LINUX)
-    return HostOsLinux;
+    return OsTypeLinux;
 #elif defined(Q_OS_MAC)
-    return HostOsMac;
+    return OsTypeMac;
 #elif defined(Q_OS_UNIX)
-    return HostOsOtherUnix;
+    return OsTypeOtherUnix;
 #else
-    return HostOsOther;
+    return OsTypeOther;
 #endif
 }
 
diff --git a/src/libs/utils/osspecificaspects.h b/src/libs/utils/osspecificaspects.h
new file mode 100644
index 0000000000..febdcbd022
--- /dev/null
+++ b/src/libs/utils/osspecificaspects.h
@@ -0,0 +1,74 @@
+/**************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef QTC_OSSPECIFICASPECTS_H
+#define QTC_OSSPECIFICASPECTS_H
+
+#include "utils_global.h"
+
+#include <QString>
+
+#define QTC_WIN_EXE_SUFFIX ".exe"
+
+namespace Utils {
+
+// Add more as needed.
+enum OsType { OsTypeWindows, OsTypeLinux, OsTypeMac, OsTypeOtherUnix, OsTypeOther };
+
+class QTCREATOR_UTILS_EXPORT OsSpecificAspects
+{
+public:
+    OsSpecificAspects(OsType osType) : m_osType(osType) { }
+
+    QString withExecutableSuffix(const QString &executable) const {
+        QString finalName = executable;
+        if (m_osType == OsTypeWindows)
+            finalName += QLatin1String(QTC_WIN_EXE_SUFFIX);
+        return finalName;
+    }
+
+    Qt::CaseSensitivity fileNameCaseSensitivity() const {
+        return m_osType == OsTypeWindows ? Qt::CaseInsensitive : Qt::CaseSensitive;
+    }
+
+    QChar pathListSeparator() const {
+        return QLatin1Char(m_osType == OsTypeWindows ? ';' : ':');
+    }
+
+    Qt::KeyboardModifier controlModifier() const {
+        return m_osType == OsTypeMac ? Qt::MetaModifier : Qt::ControlModifier;
+    }
+
+private:
+    const OsType m_osType;
+};
+
+} // namespace Utils
+
+#endif // Include guard.
diff --git a/src/libs/utils/synchronousprocess.cpp b/src/libs/utils/synchronousprocess.cpp
index ab89569b77..f9c181c205 100644
--- a/src/libs/utils/synchronousprocess.cpp
+++ b/src/libs/utils/synchronousprocess.cpp
@@ -621,11 +621,11 @@ static QString checkBinary(const QDir &dir, const QString &binary)
         return  QString();
 
     switch (HostOsInfo::hostOs()) {
-    case HostOsInfo::HostOsLinux:
-    case HostOsInfo::HostOsOtherUnix:
-    case HostOsInfo::HostOsOther:
+    case OsTypeLinux:
+    case OsTypeOtherUnix:
+    case OsTypeOther:
         break;
-    case HostOsInfo::HostOsWindows: {
+    case OsTypeWindows: {
             static const char *windowsExtensions[] = {".cmd", ".bat", ".exe", ".com" };
             // Check the Windows extensions using the order
             const int windowsExtensionCount = sizeof(windowsExtensions)/sizeof(const char*);
@@ -636,7 +636,7 @@ static QString checkBinary(const QDir &dir, const QString &binary)
             }
         }
         break;
-    case HostOsInfo::HostOsMac: {
+    case OsTypeMac: {
             // Check for Mac app folders
             const QFileInfo appFolder(dir.filePath(binary + QLatin1String(".app")));
             if (appFolder.isDir()) {
diff --git a/src/libs/utils/utils-lib.pri b/src/libs/utils/utils-lib.pri
index 138c65bf45..335fb8cfdd 100644
--- a/src/libs/utils/utils-lib.pri
+++ b/src/libs/utils/utils-lib.pri
@@ -167,6 +167,7 @@ HEADERS += \
     $$PWD/bracematcher.h \
     $$PWD/proxyaction.h \
     $$PWD/hostosinfo.h \
+    $$PWD/osspecificaspects.h \
     $$PWD/elidinglabel.h \
     $$PWD/tooltip/tooltip.h \
     $$PWD/tooltip/tips.h \
diff --git a/src/libs/utils/utils.qbs b/src/libs/utils/utils.qbs
index 61f3bba82d..bb3834f3aa 100644
--- a/src/libs/utils/utils.qbs
+++ b/src/libs/utils/utils.qbs
@@ -110,6 +110,7 @@ QtcLibrary {
         "newclasswidget.cpp",
         "newclasswidget.h",
         "newclasswidget.ui",
+        "osspecificaspects.h",
         "outputformat.h",
         "outputformatter.cpp",
         "outputformatter.h",
diff --git a/src/plugins/android/androidconfigurations.cpp b/src/plugins/android/androidconfigurations.cpp
index 82e04e7b79..7774983b36 100644
--- a/src/plugins/android/androidconfigurations.cpp
+++ b/src/plugins/android/androidconfigurations.cpp
@@ -335,13 +335,13 @@ void AndroidConfigurations::detectToolchainHost()
 {
     QStringList hostPatterns;
     switch (HostOsInfo::hostOs()) {
-    case HostOsInfo::HostOsLinux:
+    case OsTypeLinux:
         hostPatterns << QLatin1String("linux*");
         break;
-    case HostOsInfo::HostOsWindows:
+    case OsTypeWindows:
         hostPatterns << QLatin1String("windows*");
         break;
-    case HostOsInfo::HostOsMac:
+    case OsTypeMac:
         hostPatterns << QLatin1String("darwin*");
         break;
     default: /* unknown host */ return;
diff --git a/src/plugins/qt4projectmanager/librarydetailscontroller.cpp b/src/plugins/qt4projectmanager/librarydetailscontroller.cpp
index abc528e4ca..8080054f6f 100644
--- a/src/plugins/qt4projectmanager/librarydetailscontroller.cpp
+++ b/src/plugins/qt4projectmanager/librarydetailscontroller.cpp
@@ -67,13 +67,13 @@ LibraryDetailsController::LibraryDetailsController(
     m_libraryDetailsWidget(libraryDetails)
 {
     switch (Utils::HostOsInfo::hostOs()) {
-    case Utils::HostOsInfo::HostOsMac:
+    case Utils::OsTypeMac:
         m_creatorPlatform = CreatorMac;
         break;
-    case Utils::HostOsInfo::HostOsLinux:
+    case Utils::OsTypeLinux:
         m_creatorPlatform = CreatorLinux;
         break;
-    case Utils::HostOsInfo::HostOsWindows:
+    case Utils::OsTypeWindows:
         m_creatorPlatform = CreatorWindows;
         break;
     default:
diff --git a/src/plugins/welcome/welcomeplugin.cpp b/src/plugins/welcome/welcomeplugin.cpp
index c9f26bbc08..befdf9d5dc 100644
--- a/src/plugins/welcome/welcomeplugin.cpp
+++ b/src/plugins/welcome/welcomeplugin.cpp
@@ -286,10 +286,10 @@ void WelcomeMode::initPlugins()
 QString WelcomeMode::platform() const
 {
     switch (HostOsInfo::hostOs()) {
-    case HostOsInfo::HostOsWindows: return QLatin1String("windows");
-    case HostOsInfo::HostOsMac: return QLatin1String("mac");
-    case HostOsInfo::HostOsLinux: return QLatin1String("linux");
-    case HostOsInfo::HostOsOtherUnix: return QLatin1String("unix");
+    case OsTypeWindows: return QLatin1String("windows");
+    case OsTypeMac: return QLatin1String("mac");
+    case OsTypeLinux: return QLatin1String("linux");
+    case OsTypeOtherUnix: return QLatin1String("unix");
     default: return QLatin1String("other");
     }
 }