[llvm-cov] Add the project summary to each source file coverage report.

This patch includes the following changes:
- Included header "Code coverage report" and include the date that the report was created.
- Included title (as specified in a command line option, (i.e llvm-cov  -project-title="Simple Test")
- In the summary, list the elf files that the source code file has contributed to.
- Used column heading for "Line No.", "Count No.", Source".

Differential Revision: https://reviews.llvm.org/D23345

llvm-svn: 279628

llvm/tools/llvm-cov/SourceCoverageViewText.cpp

@@ -63,9 +63,13 @@ void SourceCoverageViewText::renderViewHeader(raw_ostream &) {}
 
 void SourceCoverageViewText::renderViewFooter(raw_ostream &) {}
 
-void SourceCoverageViewText::renderSourceName(raw_ostream &OS) {
+void SourceCoverageViewText::renderSourceName(raw_ostream &OS, bool WholeFile) {
   getOptions().colored_ostream(OS, raw_ostream::CYAN) << getSourceName()
                                                       << ":\n";
+  if (WholeFile) {
+    getOptions().colored_ostream(OS, raw_ostream::CYAN)
+        << getOptions().ObjectFilename << ":\n";
+  }
 }
 
 void SourceCoverageViewText::renderLinePrefix(raw_ostream &OS,
@@ -211,3 +215,18 @@ void SourceCoverageViewText::renderInstantiationView(raw_ostream &OS,
   OS << ' ';
   ISV.View->print(OS, /*WholeFile=*/false, /*ShowSourceName=*/true, ViewDepth);
 }
+
+void SourceCoverageViewText::renderCellInTitle(raw_ostream &OS,
+                                               StringRef CellText) {
+  if (getOptions().hasProjectTitle())
+    getOptions().colored_ostream(OS, raw_ostream::CYAN)
+        << getOptions().ProjectTitle << "\n";
+
+  getOptions().colored_ostream(OS, raw_ostream::CYAN) << CellText << "\n";
+
+  if (getOptions().hasCreatedTime())
+    getOptions().colored_ostream(OS, raw_ostream::CYAN)
+        << getOptions().CreatedTimeStr << "\n";
+}
+
+void SourceCoverageViewText::renderTableHeader(raw_ostream &, unsigned) {}