ShellPkg: Add support for UEFI Shell 2.1 spec command line comments

Example: Shell> echo "You are ^#1!" # Testing echo You are #1! Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Chris Phillips <[email protected]> Reviewed-by: Jaben Carsey <[email protected]> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15871 6f19259b-4bc3-4df7-8a09-765794883524
tianocore · Aug 21, 2014 · d41a79a · d41a79a
1 parent a29117b
commit d41a79a
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/ShellPkg/Application/Shell/Shell.c b/ShellPkg/Application/Shell/Shell.c
@@ -2457,6 +2457,24 @@ RunCommand(
 
   TrimSpaces(&CleanOriginal);
 
+  //
+  // NULL out comments (leveraged from RunScriptFileHandle() ).
+  // The # character on a line is used to denote that all characters on the same line
+  // and to the right of the # are to be ignored by the shell.
+  // Afterward, again remove spaces, in case any were between the last command-parameter and '#'.
+  //
+  for (TempWalker = CleanOriginal; TempWalker != NULL && *TempWalker != CHAR_NULL; TempWalker++) {
+    if (*TempWalker == L'^') {
+      if (*(TempWalker + 1) == L'#') {
+        CopyMem (TempWalker, TempWalker + 1, StrSize (TempWalker) - sizeof (TempWalker[0]));
+      }
+    } else if (*TempWalker == L'#') {
+      *TempWalker = CHAR_NULL;
+    }
+  }
+
+  TrimSpaces(&CleanOriginal);
+
   //
   // Handle case that passed in command line is just 1 or more " " characters.
   //