Add an up to date POSIX port (works on Mac OS X). This is fully functional except...

[pdclib.old] / platform / posix / functions / stdio / _PDCLIB_fileops.c

diff --git a/platform/posix/functions/stdio/_PDCLIB_fileops.c b/platform/posix/functions/stdio/_PDCLIB_fileops.c
new file mode 100644 (file)
index 0000000..20138b7
--- /dev/null
+++ b/platform/posix/functions/stdio/_PDCLIB_fileops.c
@@ -0,0 +1,75 @@
+/* _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 <unistd.h>
+
+static bool readf( _PDCLIB_fd_t fd, void * buf, size_t length, 
+                   size_t * numBytesRead )
+{
+    ssize_t res = read(fd.sval, buf, length);
+    if(res == -1) {
+        return false;
+    } else {
+        *numBytesRead = res;
+        return true;
+    }
+}
+
+static bool writef( _PDCLIB_fd_t fd, const void * buf, size_t length, 
+                   size_t * numBytesWritten )
+{
+    ssize_t res = write(fd.sval, buf, length);
+    if(res == -1) {
+        return false;
+    } else {
+        *numBytesWritten = res;
+        return true;
+    }
+}
+
+/* Note: Assumes being compiled with an OFF64 programming model */
+
+static bool seekf( _PDCLIB_fd_t fd, int_fast64_t offset, int whence,
+    int_fast64_t* newPos )
+{
+    off_t npos = lseek( fd.sval, offset, whence );
+    if( npos == -1 ) {
+        return false;
+    } else {
+        *newPos = npos;
+        return true;
+    }
+}
+
+static void closef( _PDCLIB_fd_t self )
+{
+    close( self.sval );
+}
+
+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