[Analyzer] Add support for displaying cross-file diagnostic paths in HTML output

This change adds support for cross-file diagnostic paths in html output. If the
diagnostic path is not cross-file, there is no change in the output.

Patch by Vlad Tsyrklevich!

Differential Revision: https://reviews.llvm.org/D30406

llvm-svn: 309968

Author: devincoughlin

clang/include/clang/StaticAnalyzer/Core/Analyses.def

@@ -28,9 +28,10 @@ ANALYSIS_CONSTRAINTS(Z3Constraints, "z3", "Use Z3 contraint solver", CreateZ3Con
 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATEFN)
 #endif
 
-ANALYSIS_DIAGNOSTICS(HTML,  "html",  "Output analysis results using HTML",   createHTMLDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(HTML, "html", "Output analysis results using HTML", createHTMLDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(HTML_SINGLE_FILE, "html-single-file", "Output analysis results using HTML (not allowing for multi-file bugs)", createHTMLSingleFileDiagnosticConsumer)
 ANALYSIS_DIAGNOSTICS(PLIST, "plist", "Output analysis results using Plists", createPlistDiagnosticConsumer)
-ANALYSIS_DIAGNOSTICS(PLIST_MULTI_FILE, "plist-multi-file", "Output analysis results using Plists (allowing for mult-file bugs)", createPlistMultiFileDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(PLIST_MULTI_FILE, "plist-multi-file", "Output analysis results using Plists (allowing for multi-file bugs)", createPlistMultiFileDiagnosticConsumer)
 ANALYSIS_DIAGNOSTICS(PLIST_HTML, "plist-html", "Output analysis results using HTML wrapped with Plists", createPlistHTMLDiagnosticConsumer)
 ANALYSIS_DIAGNOSTICS(TEXT, "text", "Text output of analysis results", createTextPathDiagnosticConsumer)
 

clang/lib/Rewrite/HTMLRewrite.cpp

@@ -289,6 +289,11 @@ void html::AddHeaderFooterInternalBuiltinCSS(Rewriter &R, FileID FID,
       " body { color:#000000; background-color:#ffffff }\n"
       " body { font-family:Helvetica, sans-serif; font-size:10pt }\n"
       " h1 { font-size:14pt }\n"
+      " .FileName { margin-top: 5px; margin-bottom: 5px; display: inline; }\n"
+      " .FileNav { margin-left: 5px; margin-right: 5px; display: inline; }\n"
+      " .FileNav a { text-decoration:none; font-size: larger; }\n"
+      " .divider { margin-top: 30px; margin-bottom: 30px; height: 15px; }\n"
+      " .divider { background-color: gray; }\n"
       " .code { border-collapse:collapse; width:100%; }\n"
       " .code { font-family: \"Monospace\", monospace; font-size:10pt }\n"
       " .code { line-height: 1.2em }\n"