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ShellPkg/ShellLib: Fix a bug in InternalShellIsHexOrDecimalNumber 

InternalShellIsHexOrDecimalNumber() wrongly treats "-" as a number.
The patch fixes this issue.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=730

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
This commit is contained in:
Ruiyu Ni 2018-02-13 15:39:31 +07:00
parent 7cb0313359
commit ee33344c59
1 changed files with 15 additions and 8 deletions
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23
ShellPkg/Library/UefiShellLib/UefiShellLib.c
View File

@ -3,7 +3,7 @@
(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
Copyright 2016 Dell Inc.
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -3636,29 +3636,36 @@ InternalShellIsHexOrDecimalNumber (
)
{
BOOLEAN Hex;
BOOLEAN LeadingZero;
if (String == NULL) {
return FALSE;
}
//
// chop off a single negative sign
//
if (String != NULL && *String == L'-') {
if (*String == L'-') {
String++;
}
if (String == NULL) {
return (FALSE);
if (*String == CHAR_NULL) {
return FALSE;
}
//
// chop leading zeroes
//
while(String != NULL && *String == L'0'){
LeadingZero = FALSE;
while(*String == L'0'){
String++;
LeadingZero = TRUE;
}
//
// allow '0x' or '0X', but not 'x' or 'X'
//
if (String != NULL && (*String == L'x' || *String == L'X')) {
if (*(String-1) != L'0') {
if (*String == L'x' || *String == L'X') {
if (!LeadingZero) {
//
// we got an x without a preceeding 0
//
@ -3675,7 +3682,7 @@ InternalShellIsHexOrDecimalNumber (
//
// loop through the remaining characters and use the lib function
//
for ( ; String != NULL && *String != CHAR_NULL && !(StopAtSpace && *String == L' ') ; String++){
for ( ; *String != CHAR_NULL && !(StopAtSpace && *String == L' ') ; String++){
if (TimeNumbers && (String[0] == L':')) {
continue;
}