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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 <chrisp@hp.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15871 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Chris Phillips 2014-08-21 20:18:47 +00:00 committed by jcarsey
parent a29117bf9e
commit d41a79a0da
1 changed files with 18 additions and 0 deletions
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18
ShellPkg/Application/Shell/Shell.c
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@ -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.
//