PDCLIB-8: First phase of intergation of new I/O backend system (with minimal

[pdclib] / functions / stdio / _PDCLIB_fillbuffer.c

diff --git a/functions/stdio/_PDCLIB_fillbuffer.c b/functions/stdio/_PDCLIB_fillbuffer.c
new file mode 100644 (file)
index 0000000..dfdfe26
--- /dev/null
+++ b/functions/stdio/_PDCLIB_fillbuffer.c
@@ -0,0 +1,45 @@
+/* _PDCLIB_fillbuffer( struct _PDCLIB_file_t * stream )\r
+\r
+   This file is part of the Public Domain C Library (PDCLib).\r
+   Permission is granted to use, modify, and / or redistribute at will.\r
+*/\r
+\r
+#include <stdio.h>\r
+\r
+#ifndef REGTEST\r
+#include <_PDCLIB_glue.h>\r
+\r
+int _PDCLIB_fillbuffer( struct _PDCLIB_file_t * stream )\r
+{\r
+    size_t bytesRead;\r
+    bool ok = stream->ops->read( stream->handle, stream->buffer, stream->bufsize,\r
+                        &bytesRead);\r
+\r
+    if( ok ) {\r
+        if( bytesRead == 0 ) {\r
+            stream->status |= _PDCLIB_EOFFLAG;\r
+            return EOF;\r
+        }\r
+        stream->pos.offset += bytesRead;\r
+        stream->bufend = bytesRead;\r
+        stream->bufidx = 0;\r
+        return 0;\r
+    } else {\r
+        stream->status |= _PDCLIB_ERRORFLAG;\r
+        return EOF;\r
+    }\r
+}\r
+\r
+#endif\r
+\r
+#ifdef TEST\r
+#include <_PDCLIB_test.h>\r
+\r
+int main( void )\r
+{\r
+    /* Testing covered by ftell.c */\r
+    return TEST_RESULTS;\r
+}\r
+\r
+#endif\r
+\r