Debugger[CDB]: Do path mapping in both directions.

For breakpoints and reported stacktraces. Make mapping more precise,
check for slashes.

src/plugins/debugger/cdb/cdbengine.cpp

@@ -1147,7 +1147,7 @@ void CdbEngine::executeRunToLine(const ContextData &data)
         bp.fileName = data.fileName;
         bp.lineNumber = data.lineNumber;
     }
-    postCommand(cdbAddBreakpointCommand(bp, BreakpointId(-1), true), 0);
+    postCommand(cdbAddBreakpointCommand(bp, m_sourcePathMappings, BreakpointId(-1), true), 0);
     continueInferior();
 }
 
@@ -1157,7 +1157,7 @@ void CdbEngine::executeRunToFunction(const QString &functionName)
     BreakpointParameters bp(BreakpointByFunction);
     bp.functionName = functionName;
 
-    postCommand(cdbAddBreakpointCommand(bp, BreakpointId(-1), true), 0);
+    postCommand(cdbAddBreakpointCommand(bp, m_sourcePathMappings, BreakpointId(-1), true), 0);
     continueInferior();
 }
 
@@ -2329,7 +2329,7 @@ void CdbEngine::attemptBreakpointSynchronization()
         }
         switch (handler->state(id)) {
         case BreakpointInsertRequested:
-            postCommand(cdbAddBreakpointCommand(parameters, id, false), 0);
+            postCommand(cdbAddBreakpointCommand(parameters, m_sourcePathMappings, id, false), 0);
             if (!parameters.enabled)
                 postCommand("bd " + QByteArray::number(id), 0);
             handler->notifyBreakpointInsertProceeding(id);
@@ -2351,7 +2351,7 @@ void CdbEngine::attemptBreakpointSynchronization()
                 // Delete and re-add, triggering update
                 addedChanged = true;
                 postCommand("bc " + QByteArray::number(id), 0);
-                postCommand(cdbAddBreakpointCommand(parameters, id, false), 0);
+                postCommand(cdbAddBreakpointCommand(parameters, m_sourcePathMappings, id, false), 0);
                 m_pendingBreakpointMap.insert(id, response);
             }
             handler->notifyBreakpointChangeOk(id);
@@ -2384,15 +2384,8 @@ CdbEngine::NormalizedSourceFileName CdbEngine::sourceMapNormalizeFileNameFromDeb
     if (debugSourceMapping)
         qDebug(">sourceMapNormalizeFileNameFromDebugger %s", qPrintable(f));
     // Do we have source path mappings? ->Apply.
-    QString fileName = QDir::toNativeSeparators(f);
-    if (!m_sourcePathMappings.isEmpty()) {
-        foreach (const SourcePathMapping &m, m_sourcePathMappings) {
-            if (fileName.startsWith(m.first, Qt::CaseInsensitive)) {
-                fileName.replace(0, m.first.size(), m.second);
-                break;
-            }
-        }
-    }
+    const QString fileName = cdbSourcePathMapping(QDir::toNativeSeparators(f), m_sourcePathMappings,
+                                                  DebuggerToSource);
     // Up/lower case normalization according to Windows.
 #ifdef Q_OS_WIN
     QString normalized = winNormalizeFileName(fileName);

src/plugins/debugger/cdb/cdbparsehelpers.cpp

@@ -53,8 +53,50 @@
 namespace Debugger {
 namespace Internal {
 
-// Convert breakpoint in CDB syntax.
+// Perform mapping on parts of the source tree as reported by/passed to debugger
+// in case the user has specified such mappings in the global settings.
+// That is, when debugging an executable built from 'X:\buildsrv\foo.cpp' and using a local
+// source tree under 'c:\src', the user would specify a mapping 'X:\buildsrv'->'c:\src'
+// and file names passed to breakpoints and reported stack traces can be converted.
+QString cdbSourcePathMapping(QString fileName,
+                             const QList<QPair<QString, QString> > &sourcePathMapping,
+                             SourcePathMode mode)
+{
+    typedef QPair<QString, QString> SourcePathMapping;
+
+    if (fileName.isEmpty() || sourcePathMapping.isEmpty())
+        return fileName;
+    foreach (const SourcePathMapping &m, sourcePathMapping) {
+        const QString &source = mode == DebuggerToSource ? m.first : m.second;
+        const int sourceSize = source.size();
+        // Map parts of the path and ensure a slash follows.
+        if (fileName.size() > sourceSize && fileName.startsWith(source, Qt::CaseInsensitive)) {
+            const QChar next = fileName.at(sourceSize);
+            if (next == QLatin1Char('\\') || next == QLatin1Char('/')) {
+                const QString &target = mode == DebuggerToSource ? m.second: m.first;
+                fileName.replace(0, sourceSize, target);
+                return fileName;
+            }
+        }
+    }
+    return fileName;
+}
+
+// Determine file name to be used for breakpoints. Convert to native and, unless short path
+// is set, perform reverse lookup in the source path mappings.
+static inline QString cdbBreakPointFileName(const BreakpointParameters &bp,
+                                            const QList<QPair<QString, QString> > &sourcePathMapping)
+{
+    if (bp.fileName.isEmpty())
+        return bp.fileName;
+    if (bp.pathUsage == BreakpointUseShortPath)
+        return QFileInfo(bp.fileName).fileName();
+    return cdbSourcePathMapping(QDir::toNativeSeparators(bp.fileName), sourcePathMapping, SourceToDebugger);
+}
+
+// Convert breakpoint in CDB syntax. (applying source path mappings using native paths).
 QByteArray cdbAddBreakpointCommand(const BreakpointParameters &bpIn,
+                                   const QList<QPair<QString, QString> > &sourcePathMapping,
                                    BreakpointId id /* = BreakpointId(-1) */,
                                    bool oneshot)
 {
@@ -97,12 +139,7 @@ QByteArray cdbAddBreakpointCommand(const BreakpointParameters &bpIn,
         str << '`';
         if (!bp.module.isEmpty())
             str << bp.module << '!';
-        if (bp.pathUsage == BreakpointUseShortPath) {
-            str << QFileInfo(bp.fileName).fileName();
-        } else  {
-            str << QDir::toNativeSeparators(bp.fileName);
-        }
-        str << ':' << bp.lineNumber << '`';
+        str << cdbBreakPointFileName(bp, sourcePathMapping) << ':' << bp.lineNumber << '`';
         break;
     case Watchpoint:
         str << "rw 1 " << hex << hexPrefixOn << bp.address << hexPrefixOff << dec;

src/plugins/debugger/cdb/cdbparsehelpers.h

@@ -39,6 +39,7 @@
 #include <QtCore/QtGlobal>
 #include <QtCore/QList>
 #include <QtCore/QVector>
+#include <QtCore/QPair>
 #include <QtCore/QByteArray>
 
 QT_BEGIN_NAMESPACE
@@ -54,8 +55,17 @@ struct ThreadData;
 class Register;
 class GdbMi;
 
-// Convert breakpoint in CDB syntax.
-QByteArray cdbAddBreakpointCommand(const BreakpointParameters &d, BreakpointId id = BreakpointId(-1), bool oneshot = false);
+// Perform mapping on parts of the source tree as reported by/passed to debugger
+// in case the user has specified such mappings in the global settings.
+enum SourcePathMode { DebuggerToSource, SourceToDebugger };
+QString cdbSourcePathMapping(QString fileName,
+                             const QList<QPair<QString, QString> > &sourcePathMapping,
+                             SourcePathMode mode);
+
+// Convert breakpoint in CDB syntax (applying source path mappings using native paths).
+QByteArray cdbAddBreakpointCommand(const BreakpointParameters &d,
+                                   const QList<QPair<QString, QString> > &sourcePathMapping,
+                                   BreakpointId id = BreakpointId(-1), bool oneshot = false);
 // Parse extension command listing breakpoints.
 // Note that not all fields are returned, since file, line, function are encoded
 // in the expression (that is in addition deleted on resolving for a bp-type breakpoint).