PDCLIB-16: Add _unlocked variations of all I/O routines; move work into these versions

[pdclib.old] / functions / stdio / fgetc.c

diff --git a/functions/stdio/fgetc.c b/functions/stdio/fgetc.c
index 900cd0a12181a2f7f3e53df03d3538a53952a0b3..ae7a8356685540e2582a1c5dcc7a9b350a530c18 100644 (file)
--- a/functions/stdio/fgetc.c
+++ b/functions/stdio/fgetc.c
@@ -10,10 +10,27 @@
 
 #ifndef REGTEST
 
+#include <_PDCLIB_glue.h>
+
+int fgetc_unlocked( struct _PDCLIB_file_t * stream )
+{
+    if ( _PDCLIB_prepread( stream ) == EOF )
+    {
+        return EOF;
+    }
+    if ( stream->ungetidx > 0 )
+    {
+        return (unsigned char)stream->ungetbuf[ --(stream->ungetidx) ];
+    }
+    return (unsigned char)stream->buffer[stream->bufidx++];
+}
+
 int fgetc( struct _PDCLIB_file_t * stream )
 {
-    /* TODO: Implement. */
-    return 0;
+    flockfile( stream );
+    int c = fgetc_unlocked( stream );
+    funlockfile( stream );
+    return c;
 }
 
 #endif
@@ -23,7 +40,7 @@ int fgetc( struct _PDCLIB_file_t * stream )
 
 int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
+    /* Testing covered by ftell.c */
     return TEST_RESULTS;
 }