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OcStringLib: Fix compilation with UDK, which has no CharToUpper

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This commit is contained in:
vit9696 2019-04-27 23:58:41 +03:00
parent 3837176219
commit 392185b0e3
1 changed files with 37 additions and 8 deletions
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45
Library/OcStringLib/OcUnicodeLib.c
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@ -19,6 +19,35 @@
#include <Library/OcStringLib.h>
#include <Library/PcdLib.h>
/**
Convert a Unicode character to upper case only if
it maps to a valid small-case ASCII character.
This internal function only deal with Unicode character
which maps to a valid small-case ASII character, i.e.
L'a' to L'z'. For other Unicode character, the input character
is returned directly.
@param Char The character to convert.
@retval LowerCharacter If the Char is with range L'a' to L'z'.
@retval Unchanged Otherwise.
**/
STATIC
CHAR16
InternalCharToUpper (
IN CHAR16 Char
)
{
if (Char >= L'a' && Char <= L'z') {
return (CHAR16) (Char - (L'a' - L'A'));
}
return Char;
}
/**
Performs a case insensitive comparison of two Null-terminated Unicode strings,
and returns the difference between the first mismatched Unicode characters.
@ -64,13 +93,13 @@ StriCmp (
ASSERT (StrSize (FirstString) != 0);
ASSERT (StrSize (SecondString) != 0);
UpperFirstString = CharToUpper (*FirstString);
UpperSecondString = CharToUpper (*SecondString);
UpperFirstString = InternalCharToUpper (*FirstString);
UpperSecondString = InternalCharToUpper (*SecondString);
while ((*FirstString != '\0') && (*SecondString != '\0') && (UpperFirstString == UpperSecondString)) {
FirstString++;
SecondString++;
UpperFirstString = CharToUpper (*FirstString);
UpperSecondString = CharToUpper (*SecondString);
UpperFirstString = InternalCharToUpper (*FirstString);
UpperSecondString = InternalCharToUpper (*SecondString);
}
return UpperFirstString - UpperSecondString;
@ -140,16 +169,16 @@ StrniCmp (
ASSERT (Length <= PcdGet32 (PcdMaximumUnicodeStringLength));
}
UpperFirstString = CharToUpper (*FirstString);
UpperSecondString = CharToUpper (*SecondString);
UpperFirstString = InternalCharToUpper (*FirstString);
UpperSecondString = InternalCharToUpper (*SecondString);
while ((*FirstString != L'\0') &&
(*SecondString != L'\0') &&
(UpperFirstString == UpperSecondString) &&
(Length > 1)) {
FirstString++;
SecondString++;
UpperFirstString = CharToUpper (*FirstString);
UpperSecondString = CharToUpper (*SecondString);
UpperFirstString = InternalCharToUpper (*FirstString);
UpperSecondString = InternalCharToUpper (*SecondString);
Length--;
}