Code reorganization

[SFmpqapi.git] / SFUtil.cpp

diff --git a/SFUtil.cpp b/SFUtil.cpp
new file mode 100644 (file)
index 0000000..76d2228
--- /dev/null
+++ b/SFUtil.cpp
@@ -0,0 +1,96 @@
+// License information for this code is in license.txt
+
+#include <windows.h>
+#include <stdlib.h>
+#include "SFTypes.h"
+
+void WINAPI SFMemZero(LPVOID lpvDestination, DWORD dwLength)
+{
+       DWORD dwPrevLen = dwLength;
+       LPDWORD lpdwDestination = (LPDWORD)lpvDestination;
+       LPBYTE lpbyDestination;
+
+       dwLength >>= 2;
+
+       while (dwLength--)
+               *lpdwDestination++ = 0;
+
+       lpbyDestination = (LPBYTE)lpdwDestination;
+
+       dwLength = dwPrevLen;
+       dwLength &= 3;
+
+       while (dwLength--)
+               *lpbyDestination++ = 0;
+}
+
+LPVOID WINAPI SFAlloc(DWORD dwSize)
+{
+       LPVOID lpMemory = malloc(dwSize);
+       if (lpMemory) SFMemZero(lpMemory,dwSize);
+       return lpMemory;
+}
+
+void WINAPI SFFree(LPVOID lpvMemory)
+{
+       if (lpvMemory) free(lpvMemory);
+}
+
+Int64 SFGetFileSize(HANDLE hFile)
+{
+       IntConv FileSize;
+
+       FileSize.ui64 = 0;
+
+       FileSize.ui32[0] = ::GetFileSize(hFile, &FileSize.ui32[1]);
+
+       if (FileSize.ui32[0] == INVALID_FILE_SIZE) {
+               if (::GetLastError() != NO_ERROR)
+                       return -1;
+       }
+
+       return FileSize.i64;
+}
+
+Int64 SFSetFilePointer(HANDLE hFile, Int64 nDistance, UInt32 dwMoveMethod)
+{
+       IntConv FilePos;
+
+       FilePos.i64 = nDistance;
+
+       FilePos.i32[0] = ::SetFilePointer(hFile, FilePos.i32[0], &FilePos.i32[1], dwMoveMethod);
+
+       if (FilePos.i32[0] == INVALID_SET_FILE_POINTER) {
+               if (::GetLastError() != NO_ERROR)
+                       return -1;
+       }
+
+       return FilePos.i64;
+}
+
+size_t strlnlen(const char *strline)
+{
+       if (strline==0) return 0;
+       const char *strcr = strchr(strline,'\r');
+       const char *strlf = strchr(strline,'\n');
+       if (strcr==0 && strlf==0) return strlen(strline);
+       if (strcr!=0 && (strcr<strlf || strlf==0)) return strcr-strline;
+       if (strlf!=0 && (strlf<strcr || strcr==0)) return strlf-strline;
+       return strlen(strline);
+}
+
+char *nextline(const char *strline)
+{
+       if (strline==0) return 0;
+       const char *strcr = strchr(strline,'\r');
+       const char *strlf = strchr(strline,'\n');
+       if (strcr==0 && strlf==0) return 0;
+       const char *streol;
+       if (strcr!=0 && (strcr<strlf || strlf==0)) streol = strcr;
+       if (strlf!=0 && (strlf<strcr || strcr==0)) streol = strlf;
+       do {
+               streol++;
+       } while (streol[0]=='\r' || streol[0]=='\n');
+       if (streol[0]==0) return 0;
+       return (char *)streol;
+}