Perforce: Simplify fileNameFromPerforceName()

Drop errorMessage arg. There are 2 callers of this method
1. PerforcePluginPrivate::printOpenedFileList() was ignoring this arg.
2. PerforceEditorWidget::findDiffFile() was just printing qWarning().
   In this case, instead of printing a warning, append a relevant
   error message to the VcsOutputWindow. Note, that this is done
   in case the passed quiet is false. Once, it's done implicitly
   by the call to runP4Cmd() and passing ErrorToWindow flag.
   The second possible message is explicitly sent to VcsOutputWindow
   in case of !quiet.

Change-Id: I257d474b958b09965ffabdd09ff2e0fb253a0bf8
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/perforce/perforceeditor.cpp

@@ -58,11 +58,7 @@ VcsBase::BaseAnnotationHighlighterCreator PerforceEditorWidget::annotationHighli
 
 QString PerforceEditorWidget::findDiffFile(const QString &f) const
 {
-    QString errorMessage;
-    const QString fileName = fileNameFromPerforceName(f.trimmed(), false, &errorMessage);
-    if (fileName.isEmpty())
-        qWarning("%s", qPrintable(errorMessage));
-    return fileName;
+    return fileNameFromPerforceName(f.trimmed(), false);
 }
 
 QStringList PerforceEditorWidget::annotationPreviousVersions(const QString &v) const

src/plugins/perforce/perforceplugin.cpp

@@ -691,7 +691,6 @@ void PerforcePluginPrivate::printOpenedFileList()
         return;
     // reformat "//depot/file.cpp#1 - description" into "file.cpp # - description"
     // for context menu opening to work. This produces absolute paths, then.
-    QString errorMessage;
     QString mapped;
     const QChar delimiter = QLatin1Char('#');
     const QStringList lines = perforceResponse.stdOut.split(QLatin1Char('\n'));
@@ -699,7 +698,7 @@ void PerforcePluginPrivate::printOpenedFileList()
         mapped.clear();
         const int delimiterPos = line.indexOf(delimiter);
         if (delimiterPos > 0)
-            mapped = fileNameFromPerforceName(line.left(delimiterPos), true, &errorMessage);
+            mapped = fileNameFromPerforceName(line.left(delimiterPos), true);
         if (mapped.isEmpty())
             VcsOutputWindow::appendSilently(line);
         else
@@ -1618,7 +1617,7 @@ static QString msgWhereFailed(const QString & file, const QString &why)
 }
 
 // Map a perforce name "//xx" to its real name in the file system
-QString fileNameFromPerforceName(const QString &perforceName, bool quiet, QString *errorMessage)
+QString fileNameFromPerforceName(const QString &perforceName, bool quiet)
 {
     // All happy, already mapped
     if (!perforceName.startsWith(QLatin1String("//")))
@@ -1630,10 +1629,8 @@ QString fileNameFromPerforceName(const QString &perforceName, bool quiet, QStrin
     if (!quiet)
         flags |= CommandToWindow|StdErrToWindow|ErrorToWindow;
     const PerforceResponse response = dd->runP4Cmd(settings().topLevelSymLinkTarget(), args, flags);
-    if (response.error) {
-        *errorMessage = msgWhereFailed(perforceName, response.message);
+    if (response.error)
         return {};
-    }
 
     QString output = response.stdOut;
     if (output.endsWith(QLatin1Char('\r')))
@@ -1642,8 +1639,11 @@ QString fileNameFromPerforceName(const QString &perforceName, bool quiet, QStrin
         output.chop(1);
 
     if (output.isEmpty()) {
+        if (!quiet) {
             //: File is not managed by Perforce
-        *errorMessage = msgWhereFailed(perforceName, Tr::tr("The file is not mapped"));
+            VcsOutputWindow::appendError(msgWhereFailed(perforceName,
+                                                        Tr::tr("The file is not mapped")));
+        }
         return {};
     }
     const QString p4fileSpec = output.mid(output.lastIndexOf(QLatin1Char(' ')) + 1);

src/plugins/perforce/perforceplugin.h

@@ -8,6 +8,6 @@
 namespace Perforce::Internal {
 
 // Map a perforce name "//xx" to its real name in the file system
-QString fileNameFromPerforceName(const QString &perforceName, bool quiet, QString *errorMessage);
+QString fileNameFromPerforceName(const QString &perforceName, bool quiet);
 
 } // Perforce::Internal