X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=platform%2Fwin32%2Ffunctions%2F_PDCLIB%2F_PDCLIB_fileops.c;fp=platform%2Fwin32%2Ffunctions%2F_PDCLIB%2F_PDCLIB_fileops.c;h=1d48e11b286c8c73706d2fd771b95b2c2d42c4c1;hb=c5d49235e09fbd58416f10dec2799e61cf3431c8;hp=0000000000000000000000000000000000000000;hpb=4c7c56442f6b3e08c17594dd4e8095fca3aec9cf;p=pdclib

diff --git a/platform/win32/functions/_PDCLIB/_PDCLIB_fileops.c b/platform/win32/functions/_PDCLIB/_PDCLIB_fileops.c
new file mode 100644
index 0000000..1d48e11
--- /dev/null
+++ b/platform/win32/functions/_PDCLIB/_PDCLIB_fileops.c
@@ -0,0 +1,87 @@
+/* _PDCLIB_fileops
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#ifndef REGTEST
+#include <stdio.h>
+#include <stdint.h>
+#include <_PDCLIB_glue.h>
+#include <errno.h>
+#include <windows.h>
+
+#if _PDCLIB_C_MIN(2011)
+_Static_assert(SEEK_SET == FILE_BEGIN, "SEEK_SET is incorrect");
+_Static_assert(SEEK_CUR == FILE_CURRENT, "SEEK_CUR is incorrect");
+_Static_assert(SEEK_END == FILE_END, "SEEK_END is incorrect");
+#endif
+
+void _PDCLIB_w32errno(void);
+
+static bool readf( _PDCLIB_fd_t self, void * buf, size_t length, 
+                   size_t * numBytesRead )
+{
+    DWORD dwLen = length > INT32_MAX ? INT32_MAX : length;
+    DWORD dwBytesRead;
+    if(ReadFile(self.pointer, buf, dwLen, &dwBytesRead, NULL)) {
+        *numBytesRead = dwBytesRead;
+        return true;
+    } else {
+        _PDCLIB_w32errno();
+        return false;
+    }
+}
+
+static bool writef( _PDCLIB_fd_t self, const void * buf, size_t length, 
+                   size_t * numBytesWritten )
+{
+    DWORD dwLen = length > INT32_MAX ? INT32_MAX : length;
+    DWORD dwBytesWritten;
+
+    if(WriteFile(self.pointer, buf, dwLen, &dwBytesWritten, NULL)) {
+        *numBytesWritten = dwBytesWritten;
+        return true;
+    } else {
+        _PDCLIB_w32errno();
+        return false;
+    }
+}
+static bool seekf( _PDCLIB_fd_t self, int_fast64_t offset, int whence,
+    int_fast64_t* newPos )
+{
+    LARGE_INTEGER liOffset;
+    liOffset.QuadPart = offset;
+    if(!SetFilePointerEx( self.pointer, liOffset, &liOffset, whence )) {
+        _PDCLIB_w32errno();
+        return false;
+    }
+
+    *newPos = liOffset.QuadPart;
+    return true;
+}
+
+static void closef( _PDCLIB_fd_t self )
+{
+    CloseHandle( self.pointer );
+}
+
+const _PDCLIB_fileops_t _PDCLIB_fileops = {
+    .read  = readf,
+    .write = writef,
+    .seek  = seekf,
+    .close = closef,
+};
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    // Tested by stdio test cases
+    return TEST_RESULTS;
+}
+
+#endif