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Register pre-defined command aliases in sorted order. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tapan Shah <tapandshah@hp.com>
Reviewed-By: Jaben Carsey <jaben.carsey@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15999 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Tapan Shah 2014-08-29 20:43:08 +00:00 committed by jcarsey
parent 227a4b1c48
commit 4ba9b812da
1 changed files with 33 additions and 3 deletions
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36
ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.c
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@ -1,7 +1,7 @@
/** @file /** @file
Provides interface to shell internal functions for shell commands. Provides interface to shell internal functions for shell commands.
(C) Copyright 2013-2014, Hewlett-Packard Development Company, L.P. Copyright (c) 2013-2014, Hewlett-Packard Development Company, L.P.<BR>
Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR> Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License are licensed and made available under the terms and conditions of the BSD License
@ -777,6 +777,9 @@ ShellCommandRegisterAlias (
) )
{ {
ALIAS_LIST *Node; ALIAS_LIST *Node;
ALIAS_LIST *CommandAlias;
ALIAS_LIST *PrevCommandAlias;
INTN LexicalMatchValue;
// //
// Asserts for NULL // Asserts for NULL
@ -800,10 +803,37 @@ ShellCommandRegisterAlias (
StrCpy(Node->CommandString, Command); StrCpy(Node->CommandString, Command);
StrCpy(Node->Alias , Alias ); StrCpy(Node->Alias , Alias );
InsertHeadList (&mAliasList.Link, &Node->Link);
// //
// add the new struct to the list // Move a new pre-defined registered alias to its sorted ordered location in the list
// //
InsertTailList (&mAliasList.Link, &Node->Link); for ( CommandAlias = (ALIAS_LIST *)GetFirstNode (&mAliasList.Link),
PrevCommandAlias = (ALIAS_LIST *)GetFirstNode (&mAliasList.Link)
; !IsNull (&mAliasList.Link, &CommandAlias->Link)
; CommandAlias = (ALIAS_LIST *) GetNextNode (&mAliasList.Link, &CommandAlias->Link) ) {
//
// Get Lexical comparison value between PrevCommandAlias and CommandAlias List Entry
//
LexicalMatchValue = gUnicodeCollation->StriColl (
gUnicodeCollation,
PrevCommandAlias->Alias,
CommandAlias->Alias
);
//
// Swap PrevCommandAlias and CommandAlias list entry if PrevCommandAlias list entry
// is alphabetically greater than CommandAlias list entry
//
if (LexicalMatchValue > 0) {
CommandAlias = (ALIAS_LIST *) SwapListEntries (&PrevCommandAlias->Link, &CommandAlias->Link);
} else if (LexicalMatchValue < 0) {
//
// PrevCommandAlias entry is lexically lower than CommandAlias entry
//
break;
}
}
return (RETURN_SUCCESS); return (RETURN_SUCCESS);
} }