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dll,launcher: invariant string comparisons

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This commit is contained in:
Bill Zissimopoulos
2016-12-09 14:23:53 -08:00
parent 228f9e2708
commit 3a65ce332b
5 changed files with 49 additions and 18 deletions
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35
src/shared/minimal.h
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@ -87,6 +87,41 @@ void *memmove(void *dst, const void *src, size_t siz)
return dst;
}
#define WINFSP_SHARED_MINIMAL_STRCMP(NAME, TYPE, CONV)\
static inline\
int NAME(const TYPE *s, const TYPE *t)\
{\
int v = 0;\
while (0 == (v = CONV(*s) - CONV(*t)) && *t)\
++s, ++t;\
return v;/*(0 < v) - (0 > v);*/\
}
#define WINFSP_SHARED_MINIMAL_STRNCMP(NAME, TYPE, CONV)\
static inline\
int NAME(const TYPE *s, const TYPE *t, size_t n)\
{\
int v = 0;\
const void *e = t + n;\
while (e > (const void *)t && 0 == (v = CONV(*s) - CONV(*t)) && *t)\
++s, ++t;\
return v;/*(0 < v) - (0 > v);*/\
}
static inline
unsigned invariant_toupper(unsigned c)
{
return ('a' <= c && c <= 'z') ? c & ~0x20 : c;
}
WINFSP_SHARED_MINIMAL_STRCMP(invariant_strcmp, char, (unsigned))
WINFSP_SHARED_MINIMAL_STRCMP(invariant_stricmp, char, invariant_toupper)
WINFSP_SHARED_MINIMAL_STRNCMP(invariant_strncmp, char, (unsigned))
WINFSP_SHARED_MINIMAL_STRNCMP(invariant_strnicmp, char, invariant_toupper)
WINFSP_SHARED_MINIMAL_STRCMP(invariant_wcscmp, wchar_t, (unsigned))
WINFSP_SHARED_MINIMAL_STRCMP(invariant_wcsicmp, wchar_t, invariant_toupper)
WINFSP_SHARED_MINIMAL_STRNCMP(invariant_wcsncmp, wchar_t, (unsigned))
WINFSP_SHARED_MINIMAL_STRNCMP(invariant_wcsnicmp, wchar_t, invariant_toupper)
#undef WINFSP_SHARED_MINIMAL_STRCMP
#undef WINFSP_SHARED_MINIMAL_STRNCMP
static inline void *MemAlloc(size_t Size)
{
return HeapAlloc(GetProcessHeap(), 0, Size);