1 files changed, 69 insertions, 0 deletions
diff --git a/src/pdclib/functions/stdio/fputs.c b/src/pdclib/functions/stdio/fputs.c
new file mode 100644
index 0000000..a5d7e56
--- /dev/null
+++ b/src/pdclib/functions/stdio/fputs.c
@@ -0,0 +1,69 @@
+/* fputs( const char *, FILE * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+
+#include "pdclib/_PDCLIB_glue.h"
+
+int fputs( const char * _PDCLIB_restrict s, struct _PDCLIB_file_t * _PDCLIB_restrict stream )
+{
+    if ( _PDCLIB_prepwrite( stream ) == EOF )
+    {
+        return EOF;
+    }
+    while ( *s != '\0' )
+    {
+        /* Unbuffered and line buffered streams get flushed when fputs() does
+           write the terminating end-of-line. All streams get flushed if the
+           buffer runs full.
+        */
+        stream->buffer[ stream->bufidx++ ] = *s;
+        if ( ( stream->bufidx == stream->bufsize ) ||
+             ( ( stream->status & _IOLBF ) && *s == '\n' )
+           )
+        {
+            if ( _PDCLIB_flushbuffer( stream ) == EOF )
+            {
+                return EOF;
+            }
+        }
+        ++s;
+    }
+    if ( stream->status & _IONBF )
+    {
+        if ( _PDCLIB_flushbuffer( stream ) == EOF )
+        {
+            return EOF;
+        }
+    }
+    return 0;
+}
+
+#endif
+
+#ifdef TEST
+
+#include "_PDCLIB_test.h"
+
+int main( void )
+{
+    const char * const message = "SUCCESS testing fputs()";
+    FILE * fh;
+    size_t i;
+    TESTCASE( ( fh = tmpfile() ) != NULL );
+    TESTCASE( fputs( message, fh ) >= 0 );
+    rewind( fh );
+    for ( i = 0; i < 23; ++i )
+    {
+        TESTCASE( fgetc( fh ) == message[i] );
+    }
+    TESTCASE( fclose( fh ) == 0 );
+    return TEST_RESULTS;
+}
+
+#endif