X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Ffputc.c;h=6224c5ec00d9f7375c8cdcb0cb330b10df64ed06;hb=e1c526e9bad3f6e69391e94059096145390508d3;hp=8f9737884b43f972beaa2cc56d7d1fe0d11b979c;hpb=13ee02fa27a739d9d602f801126eadcfbfeab8a8;p=pdclib

diff --git a/functions/stdio/fputc.c b/functions/stdio/fputc.c
index 8f97378..6224c5e 100644
--- a/functions/stdio/fputc.c
+++ b/functions/stdio/fputc.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
 /* fputc( int, FILE * )
 
    This file is part of the Public Domain C Library (PDCLib).
@@ -9,28 +7,38 @@
 #include <stdio.h>
 
 #ifndef REGTEST
+#include <_PDCLIB_io.h>
 
 /* Write the value c (cast to unsigned char) to the given stream.
    Returns c if successful, EOF otherwise.
-   If a write error occurs, sets the error indicator of the stream is set.
+   If a write error occurs, the error indicator of the stream is set.
 */
-int fputc( int c, struct _PDCLIB_file_t * stream )
+int _PDCLIB_fputc_unlocked( int c, FILE * stream )
 {
-    /* FIXME: This is devoid of any error checking (file writeable? r/w
-    constraints honored?) (Text format translations?)
-    */
+    if ( _PDCLIB_prepwrite( stream ) == EOF )
+    {
+        return EOF;
+    }
     stream->buffer[stream->bufidx++] = (char)c;
     if ( ( stream->bufidx == stream->bufsize )                   /* _IOFBF */
-           || ( ( stream->status & _IOLBF ) && (char)c == '\n' ) /* _IOLBF */
+           || ( ( stream->status & _IOLBF ) && ( (char)c == '\n' ) ) /* _IOLBF */
            || ( stream->status & _IONBF )                        /* _IONBF */
     )
     {
         /* buffer filled, unbuffered stream, or end-of-line. */
-        fflush( stream );
+        return ( _PDCLIB_flushbuffer( stream ) == 0 ) ? c : EOF;
     }
     return c;
 }
 
+int fputc( int c, FILE * stream )
+{
+    _PDCLIB_flockfile( stream );
+    int r = _PDCLIB_fputc_unlocked( c, stream );
+    _PDCLIB_funlockfile( stream );
+    return r;
+}
+
 #endif
 
 #ifdef TEST
@@ -38,7 +46,7 @@ int fputc( int c, struct _PDCLIB_file_t * stream )
 
 int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
+    /* Testing covered by ftell.c */
     return TEST_RESULTS;
 }