diff options
Diffstat (limited to 'plugins/SMS/src/AdditionalFunctions/MemoryCompare.h')
| -rw-r--r-- | plugins/SMS/src/AdditionalFunctions/MemoryCompare.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/plugins/SMS/src/AdditionalFunctions/MemoryCompare.h b/plugins/SMS/src/AdditionalFunctions/MemoryCompare.h new file mode 100644 index 0000000000..de663c6d8a --- /dev/null +++ b/plugins/SMS/src/AdditionalFunctions/MemoryCompare.h @@ -0,0 +1,177 @@ +#if !defined(AFX_MEMORYCOMPARE__H__INCLUDED_)
+#define AFX_MEMORYCOMPARE__H__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+
+// If the string pointed to by lpString1 is less than the string pointed
+// to by lpString2, the return value is negative.
+// If the string pointed to by lpString1 is greater than the string pointed
+// to by lpString2, the return value is positive.
+// If the strings are equal, the return value is zero.
+//
+// lpString1<lpString2 >> ret=1=CSTR_LESS_THAN
+// lpString1=lpString2 >> ret=2=CSTR_EQUAL
+// lpString1>lpString2 >> ret=3=CSTR_GREATER_THAN
+
+
+/*__inline DWORD MemoryCompare(LPCVOID lpcSource1,SIZE_T dwSource1Size,LPCVOID lpcSource2,SIZE_T dwSource2Size)
+{
+ DWORD dwRet;
+
+ __asm
+ {
+ mov ecx,dwSource1Size //; ecx = Source string 1 Size
+ cmp ecx,dwSource2Size //; сверяем длинны участков памяти
+ jg short greater_than
+ jl short less_than
+ test ecx,ecx
+ jz short equal //; NULL=NULL
+
+ mov esi,lpcSource1 //; edi = Source string 1
+ mov edi,lpcSource2 //; esi = Source string 2
+ cmp edi,esi //; сверяем указатели на участки памяти
+ je short equal //; это один и тотже участок, они естественно равны
+
+ test esi,esi //; lpcSource1=NULL, lpcSource1<lpcSource2
+ jz short less_than //; CSTR_LESS_THAN
+
+ test edi,edi //; lpcSource2=NULL, lpcSource1>lpcSource2
+ jz short greater_than //; CSTR_GREATER_THAN
+
+ //cld //; сканируя в прямом направлении
+
+ repe cmpsb //; цикл сравнения.
+ cmp_loop:
+ //sub ecx,4
+ //jz short equal
+
+ //inc esi
+ //inc edi
+ //mov al,byte ptr [esi]
+ //cmpsd
+ //cmp al,byte ptr [edi]
+ //je short cmp_loop
+ jg short greater_than
+ jl short less_than
+
+ equal: //; если мы попали сюда, значит, они
+ mov dwRet,CSTR_EQUAL //; совпадают (match)
+ jmp end_func
+ less_than: //; не совпадают
+ mov dwRet,CSTR_LESS_THAN
+ jmp end_func
+ greater_than:
+ mov dwRet,CSTR_GREATER_THAN
+
+ end_func:
+ }
+return(dwRet);
+}//*/
+
+__inline DWORD MemoryCompare(LPCVOID lpcSource1,SIZE_T dwSource1Size,LPCVOID lpcSource2,SIZE_T dwSource2Size)
+{
+ DWORD dwRet;
+
+ if (dwSource1Size==dwSource2Size)
+ {
+ if (lpcSource1==lpcSource2)
+ {
+ dwRet=CSTR_EQUAL;
+ }else{
+ if (lpcSource1 && lpcSource2)
+ {
+#ifdef _INC_MEMORY
+ dwRet=(2+memcmp(lpcSource1,lpcSource2,dwSource1Size));
+#else
+ SIZE_T dwDiffPosition;
+
+ //dwDiffPosition=RtlCompareMemory(lpcSource1,lpcSource2,dwSource1Size);
+ for(dwDiffPosition=0; (dwDiffPosition<dwSource1Size) && (((const BYTE*)lpcSource1)[dwDiffPosition]==((const BYTE*)lpcSource2)[dwDiffPosition]); dwDiffPosition++);
+ if (dwDiffPosition==dwSource1Size)
+ {
+ dwRet=CSTR_EQUAL;
+ }else{
+ if ((*((BYTE*)(((SIZE_T)lpcSource1)+dwDiffPosition)))>(*((BYTE*)(((SIZE_T)lpcSource2)+dwDiffPosition))))
+ {
+ dwRet=CSTR_GREATER_THAN;
+ }else{
+ dwRet=CSTR_LESS_THAN;
+ }
+ }
+#endif
+ }else{
+ if (lpcSource1)
+ {//lpcSource2==NULL
+ dwRet=CSTR_GREATER_THAN;
+ }else{//lpcSource1==NULL
+ dwRet=CSTR_LESS_THAN;
+ }
+ }
+ }
+ }else{
+ if (dwSource1Size<dwSource2Size)
+ {
+ dwRet=CSTR_LESS_THAN;
+ }else{
+ dwRet=CSTR_GREATER_THAN;
+ }
+ }
+return(dwRet);
+}//*/
+
+
+/*
+__inline DWORD MemoryCompareEx(LPCVOID lpcSource1,SIZE_T dwSource1Size,LPCVOID lpcSource2,SIZE_T dwSource2Size,SIZE_T *pdwDiffPosition)
+{
+ DWORD dwRet;
+
+ if (dwSource1Size==dwSource2Size)
+ {
+ if (lpcSource1==lpcSource2)
+ {
+ dwRet=CSTR_EQUAL;
+ }else{
+ if (lpcSource1 && lpcSource2)
+ {
+ SIZE_T dwDiffPosition;
+
+ dwDiffPosition=RtlCompareMemory(lpcSource1,lpcSource2,dwSource1Size);
+ if (dwDiffPosition==dwSource1Size)
+ {
+ dwRet=CSTR_EQUAL;
+ }else{
+ if ((*((BYTE*)(((SIZE_T)lpcSource1)+dwDiffPosition)))>(*((BYTE*)(((SIZE_T)lpcSource2)+dwDiffPosition))))
+ {
+ dwRet=CSTR_GREATER_THAN;
+ }else{
+ dwRet=CSTR_LESS_THAN;
+ }
+ }
+
+ if (pdwDiffPosition) (*pdwDiffPosition)=dwDiffPosition;
+ }else{
+ if (lpcSource1)
+ {//lpcSource2==NULL
+ dwRet=CSTR_GREATER_THAN;
+ }else{//lpcSource1==NULL
+ dwRet=CSTR_LESS_THAN;
+ }
+ }
+ }
+ }else{
+ if (dwSource1Size<dwSource2Size)
+ {
+ dwRet=CSTR_LESS_THAN;
+ }else{
+ dwRet=CSTR_GREATER_THAN;
+ }
+ }
+return(dwRet);
+}
+*/
+
+
+#endif // !defined(AFX_MEMORYCOMPARE__H__INCLUDED_)
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