Miscellaneous implementation of kernel32 stubs.

[reactos.git] / reactos / lib / kernel32 / misc / env.c

diff --git a/reactos/lib/kernel32/misc/env.c b/reactos/lib/kernel32/misc/env.c
index abaac3f..60a1add 100644 (file)
--- a/reactos/lib/kernel32/misc/env.c
+++ b/reactos/lib/kernel32/misc/env.c
@@ -346,3 +346,153 @@ FreeEnvironmentStringsW(
        return TRUE;
 }
 
        return TRUE;
 }
 

+
+int ExpandVariableA(
+       LPCSTR  lpSrc,  LPSTR  lpDst,   DWORD  nSize , DWORD *nWritten)
+{
+       int nVar = 0;
+       LPSTR  lpVar;
+       LPSTR  lpEnd;
+
+       if ( nWritten == NULL )
+               return -1;
+
+       if ( *lpSrc != '%' ) {
+               return -1;
+       }
+
+
+       lpVar = (LPSTR)lpSrc;
+       lpVar++;
+
+
+       lpEnd = strchr( lpVar, '%' );
+       if ( lpEnd == NULL ) {
+               return -1;
+       }
+       else
+               *lpEnd = 0;
+
+       nWritten = GetEnvironmentVariableA(lpVar,lpDst,nSize);
+       *lpEnd = '%';
+
+       if ( nWritten == 0 )
+               return -1;
+
+       if ( nWritten > nSize )
+               return -1;
+
+       return (lpEnd - lpVar) -1;
+}
+
+
+DWORD STDCALL ExpandEnvironmentStringsA(
+       LPCSTR  lpSrc,  LPSTR  lpDst,   DWORD  nSize    
+)
+{
+       DWORD v;
+       DWORD bw;
+
+       while(*lpSrc != 0 && nSize > 0 )
+       {
+               if ( *lpSrc == '%' ) {
+                       v = ExpandVariableA(lpSrc,lpDst,nSize , &bw);
+                       if ( v == -1 ) {
+                               *lpDst = *lpSrc;
+                               lpDst++;
+                               lpSrc++;
+                               nSize--;
+                       }
+                       else {
+                               lpSrc+=v;
+                               lpDst+=bw;
+                               nSize-=bw;
+                       }
+               }
+               else {
+
+                       *lpDst = *lpSrc;
+                       lpDst++;
+                       lpSrc++;
+                       nSize--;
+
+               }
+               
+       }
+       
+}
+
+int ExpandVariableW(
+       LPCWSTR  lpSrc, LPWSTR  lpDst,  DWORD  nSize , DWORD *nWritten)
+{
+       LPWSTR  lpVar;
+       LPWSTR  lpEnd;
+
+       if ( nWritten == NULL )
+               return -1;
+
+       if ( *lpSrc != L'%' ) {
+               return -1;
+       }
+
+
+       lpVar = (LPWSTR)lpSrc;
+       lpVar++;
+
+
+       lpEnd = wcschr( lpVar, L'%' );
+       if ( lpEnd == NULL ) {
+               return -1;
+       }
+       else
+               *lpEnd = 0;
+
+       nWritten = GetEnvironmentVariableW(lpVar,lpDst,nSize);
+       *lpEnd = L'%';
+
+       if ( nWritten == 0 )
+               return -1;
+
+       if ( nWritten > nSize )
+               return -1;
+
+       return ((lpEnd - lpVar)/2) -1;
+}
+
+
+DWORD STDCALL ExpandEnvironmentStringsW(
+       LPCWSTR  lpSrc, LPWSTR  lpDst,  DWORD  nSize    
+)
+{
+       DWORD v;
+       DWORD bw;
+
+       while(*lpSrc != 0 && nSize > 0 )
+       {
+               if ( *lpSrc == L'%' ) {
+                       v = ExpandVariableW(lpSrc,lpDst,nSize , &bw);
+                       if ( v == -1 ) {
+                               *lpDst = *lpSrc;
+                               lpDst++;
+                               lpSrc++;
+                               nSize--;
+                       }
+                       else {
+                               lpSrc+=v;
+                               lpDst+=bw;
+                               nSize-=bw;
+                       }
+               }
+               else {
+
+                       *lpDst = *lpSrc;
+                       lpDst++;
+                       lpSrc++;
+                       nSize--;
+
+               }
+               
+       }
+       
+}
+