tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add check before use to make code run more safer. 

Signed-off-by: ydong10

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12262 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10 2011-09-02 07:51:45 +00:00
parent 0c18794ea4
commit 6709bbd17f
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
MdePkg/Library/BasePrintLib/PrintLibInternal.c
View File

@ -843,7 +843,7 @@ BasePrintLibSPrintMarker (
//
if ((Flags & (PAD_TO_WIDTH | LEFT_JUSTIFY)) == (PAD_TO_WIDTH)) {
LengthToReturn += ((Width - Precision) * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Width - Precision, ' ', BytesPerOutputCharacter);
}
}
@ -851,22 +851,22 @@ BasePrintLibSPrintMarker (
if (ZeroPad) {
if (Prefix != 0) {
LengthToReturn += (1 * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, Prefix, BytesPerOutputCharacter);
}
}
LengthToReturn += ((Precision - Count) * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Precision - Count, '0', BytesPerOutputCharacter);
}
} else {
LengthToReturn += ((Precision - Count) * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Precision - Count, ' ', BytesPerOutputCharacter);
}
if (Prefix != 0) {
LengthToReturn += (1 * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, Prefix, BytesPerOutputCharacter);
}
}
@ -887,7 +887,7 @@ BasePrintLibSPrintMarker (
ArgumentCharacter = ((*ArgumentString & 0xff) | (*(ArgumentString + 1) << 8)) & ArgumentMask;
LengthToReturn += (1 * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ArgumentCharacter, BytesPerOutputCharacter);
}
ArgumentString += BytesPerArgumentCharacter;
@ -899,7 +899,7 @@ BasePrintLibSPrintMarker (
Index++;
if (Index < Count) {
LengthToReturn += (1 * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ',', BytesPerOutputCharacter);
}
}
@ -912,7 +912,7 @@ BasePrintLibSPrintMarker (
//
if ((Flags & (PAD_TO_WIDTH | LEFT_JUSTIFY)) == (PAD_TO_WIDTH | LEFT_JUSTIFY)) {
LengthToReturn += ((Width - Precision) * BytesPerOutputCharacter);
if ((Flags & COUNT_ONLY_NO_PRINT) == 0) {
if ((Flags & COUNT_ONLY_NO_PRINT) == 0 && Buffer != NULL) {
Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Width - Precision, ' ', BytesPerOutputCharacter);
}
}
@ -932,6 +932,7 @@ BasePrintLibSPrintMarker (
return (LengthToReturn / BytesPerOutputCharacter);
}
ASSERT (Buffer != NULL);
//
// Null terminate the Unicode or ASCII string
//