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-rw-r--r--kxkb/extension.cpp326
1 files changed, 326 insertions, 0 deletions
diff --git a/kxkb/extension.cpp b/kxkb/extension.cpp
new file mode 100644
index 000000000..f4eee125c
--- /dev/null
+++ b/kxkb/extension.cpp
@@ -0,0 +1,326 @@
+#include <string.h>
+#include <errno.h>
+
+#include <qstring.h>
+#include <qmap.h>
+#include <qfile.h>
+
+#include <kdebug.h>
+#include <kstandarddirs.h>
+#include <kprocess.h>
+
+#include <X11/Xatom.h>
+#include <X11/Xos.h>
+#include <X11/Xlib.h>
+#include <X11/XKBlib.h>
+#include <X11/extensions/XKBfile.h>
+#include <X11/extensions/XKBgeom.h>
+#include <X11/extensions/XKM.h>
+
+#include "extension.h"
+
+
+QMap<QString, FILE*> XKBExtension::fileCache; //TODO: move to class?
+
+
+static QString getLayoutKey(const QString& layout, const QString& variant)
+{
+ return layout + "." + variant;
+}
+
+QString XKBExtension::getPrecompiledLayoutFilename(const QString& layoutKey)
+{
+ QString compiledLayoutFileName = m_tempDir + layoutKey + ".xkm";
+ return compiledLayoutFileName;
+}
+
+XKBExtension::XKBExtension(Display *d)
+{
+ if ( d == NULL )
+ d = qt_xdisplay();
+ m_dpy = d;
+
+// QStringList dirs = KGlobal::dirs()->findDirs ( "tmp", "" );
+// m_tempDir = dirs.count() == 0 ? "/tmp/" : dirs[0];
+ m_tempDir = locateLocal("tmp", "");
+}
+
+bool XKBExtension::init()
+{
+ // Verify the Xlib has matching XKB extension.
+
+ int major = XkbMajorVersion;
+ int minor = XkbMinorVersion;
+
+ if (!XkbLibraryVersion(&major, &minor))
+ {
+ kdError() << "Xlib XKB extension " << major << '.' << minor <<
+ " != " << XkbMajorVersion << '.' << XkbMinorVersion << endl;
+ return false;
+ }
+
+ // Verify the X server has matching XKB extension.
+
+ int opcode_rtrn;
+ int error_rtrn;
+ int xkb_opcode;
+ if (!XkbQueryExtension(m_dpy, &opcode_rtrn, &xkb_opcode, &error_rtrn,
+ &major, &minor))
+ {
+ kdError() << "X server XKB extension " << major << '.' << minor <<
+ " != " << XkbMajorVersion << '.' << XkbMinorVersion << endl;
+ return false;
+ }
+
+ // Do it, or face horrible memory corrupting bugs
+ ::XkbInitAtoms(NULL);
+
+ return true;
+}
+
+void XKBExtension::reset()
+{
+ for(QMap<QString, FILE*>::ConstIterator it = fileCache.begin(); it != fileCache.end(); it++) {
+ fclose(*it);
+// remove( QFile::encodeName(getPrecompiledLayoutFileName(*it)) );
+ }
+ fileCache.clear();
+}
+
+XKBExtension::~XKBExtension()
+{
+/* if( m_compiledLayoutFileNames.isEmpty() == false )
+ deletePrecompiledLayouts();*/
+}
+
+bool XKBExtension::setXkbOptions(const QString& options, bool resetOld)
+{
+ if (options.isEmpty())
+ return true;
+
+ QString exe = KGlobal::dirs()->findExe("setxkbmap");
+ if (exe.isEmpty())
+ return false;
+
+ KProcess p;
+ p << exe;
+ if( resetOld )
+ p << "-option";
+ p << "-option" << options;
+
+ p.start(KProcess::Block);
+
+ return p.normalExit() && (p.exitStatus() == 0);
+}
+
+bool XKBExtension::setLayout(const QString& model,
+ const QString& layout, const QString& variant,
+ const QString& includeGroup, bool useCompiledLayouts)
+{
+ if( useCompiledLayouts == false ) {
+ return setLayoutInternal( model, layout, variant, includeGroup );
+ }
+
+ const QString layoutKey = getLayoutKey(layout, variant);
+
+ bool res;
+ if( fileCache.contains(layoutKey) ) {
+ res = setCompiledLayout( layoutKey );
+ kdDebug() << "setCompiledLayout " << layoutKey << ": " << res << endl;
+
+ if( res )
+ return res;
+ }
+// else {
+ res = setLayoutInternal( model, layout, variant, includeGroup );
+ kdDebug() << "setRawLayout " << layoutKey << ": " << res << endl;
+ if( res )
+ compileCurrentLayout( layoutKey );
+
+// }
+ return res;
+}
+
+// private
+bool XKBExtension::setLayoutInternal(const QString& model,
+ const QString& layout, const QString& variant,
+ const QString& includeGroup)
+{
+ if ( layout.isEmpty() )
+ return false;
+
+ QString exe = KGlobal::dirs()->findExe("setxkbmap");
+ if( exe.isEmpty() ) {
+ kdError() << "Can't find setxkbmap" << endl;
+ return false;
+ }
+
+ QString fullLayout = layout;
+ QString fullVariant = variant;
+ if( includeGroup.isEmpty() == false ) {
+ fullLayout = includeGroup;
+ fullLayout += ",";
+ fullLayout += layout;
+
+// fullVariant = baseVar;
+ fullVariant = ",";
+ fullVariant += variant;
+ }
+
+ KProcess p;
+ p << exe;
+// p << "-rules" << rule;
+ if( model.isEmpty() == false )
+ p << "-model" << model;
+ p << "-layout" << fullLayout;
+ if( !fullVariant.isNull() && !fullVariant.isEmpty() )
+ p << "-variant" << fullVariant;
+
+ if (p.start(KProcess::Block) && p.normalExit() && (p.exitStatus() == 0)) {
+ return true; //setGroup( group );
+ }
+ else {
+ return false;
+ }
+}
+
+bool XKBExtension::setGroup(unsigned int group)
+{
+ kdDebug() << "Setting group " << group << endl;
+ return XkbLockGroup( m_dpy, XkbUseCoreKbd, group );
+}
+
+unsigned int XKBExtension::getGroup() const
+{
+ XkbStateRec xkbState;
+ XkbGetState( m_dpy, XkbUseCoreKbd, &xkbState );
+ return xkbState.group;
+}
+
+/**
+ * @brief Gets the current layout in its binary compiled form
+ * and write it to the file specified by 'fileName'
+ * @param[in] fileName file to store compiled layout to
+ * @return true if no problem, false otherwise
+ */
+bool XKBExtension::compileCurrentLayout(const QString &layoutKey)
+{
+ XkbFileInfo result;
+ memset(&result, 0, sizeof(result));
+ result.type = XkmKeymapFile;
+ XkbReadFromServer(m_dpy, XkbAllMapComponentsMask, XkbAllMapComponentsMask, &result);
+
+ const QString fileName = getPrecompiledLayoutFilename(layoutKey);
+
+ kdDebug() << "compiling layout " << this << " cache size: " << fileCache.count() << endl;
+ if( fileCache.contains(layoutKey) ) {
+ kdDebug() << "trashing old compiled layout for " << fileName << endl;
+ if( fileCache[ layoutKey ] != NULL )
+ fclose( fileCache[ layoutKey ] ); // recompiling - trash the old file
+ fileCache.remove(fileName);
+ }
+
+ FILE *output = fopen(QFile::encodeName(fileName), "w");
+
+ if ( output == NULL )
+ {
+ kdWarning() << "Could not open " << fileName << " to precompile: " << strerror(errno) << endl;
+ XkbFreeKeyboard(result.xkb, XkbAllControlsMask, True);
+ return false;
+ }
+
+ if( !XkbWriteXKMFile(output, &result) ) {
+ kdWarning() << "Could not write compiled layout to " << fileName << endl;
+ fclose(output);
+ return false;
+ }
+
+ fclose(output); // TODO: can we change mode w/out reopening?
+ FILE *input = fopen(QFile::encodeName(fileName), "r");
+ fileCache[ layoutKey ] = input;
+
+ XkbFreeKeyboard(result.xkb, XkbAllControlsMask, True);
+ return true;
+}
+
+/**
+ * @brief takes layout from its compiled binary snapshot in file
+ * and sets it as current
+ * TODO: cache layout in memory rather than in file
+ */
+bool XKBExtension::setCompiledLayout(const QString &layoutKey)
+{
+ FILE *input = NULL;
+
+ if( fileCache.contains(layoutKey) ) {
+ input = fileCache[ layoutKey ];
+ }
+
+ if( input == NULL ) {
+ kdWarning() << "setCompiledLayout trying to reopen xkb file" << endl; // should never happen
+ const QString fileName = getPrecompiledLayoutFilename(layoutKey);
+ input = fopen(QFile::encodeName(fileName), "r");
+
+ // FILE *input = fopen(QFile::encodeName(fileName), "r");
+ if ( input == NULL ) {
+ kdDebug() << "Unable to open " << fileName << ": " << strerror(errno) << endl;
+ fileCache.remove(layoutKey);
+ return false;
+ }
+ }
+ else {
+ rewind(input);
+ }
+
+ XkbFileInfo result;
+ memset(&result, 0, sizeof(result));
+ if ((result.xkb = XkbAllocKeyboard())==NULL) {
+ kdWarning() << "Unable to allocate memory for keyboard description" << endl;
+// fclose(input);
+// fileCache.remove(layoutKey);
+ return false;
+ }
+
+ unsigned retVal = XkmReadFile(input, 0, XkmKeymapLegal, &result);
+ if (retVal == XkmKeymapLegal)
+ {
+ // this means reading the Xkm didn't manage to read any section
+ kdWarning() << "Unable to load map from file" << endl;
+ XkbFreeKeyboard(result.xkb, XkbAllControlsMask, True);
+ fclose(input);
+ fileCache.remove(layoutKey);
+ return false;
+ }
+
+ // fclose(input); // don't close - goes in cache
+
+ if (XkbChangeKbdDisplay(m_dpy, &result) == Success)
+ {
+ if (!XkbWriteToServer(&result))
+ {
+ kdWarning() << "Unable to write the keyboard layout to X display" << endl;
+ XkbFreeKeyboard(result.xkb, XkbAllControlsMask, True);
+ return false;
+ }
+ }
+ else
+ {
+ kdWarning() << "Unable prepare the keyboard layout for X display" << endl;
+ }
+
+ XkbFreeKeyboard(result.xkb, XkbAllControlsMask, True);
+ return true;
+}
+
+
+// Deletes the precompiled layouts stored in temporary files
+// void XKBExtension::deletePrecompiledLayouts()
+// {
+// QMapConstIterator<LayoutUnit, QString> it, end;
+// end = m_compiledLayoutFileNames.end();
+// for (it = m_compiledLayoutFileNames.begin(); it != end; ++it)
+// {
+// unlink(QFile::encodeName(it.data()));
+// }
+// m_compiledLayoutFileNames.clear();
+// }
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