Added yy_fill_buffer

1 files changed, 29 insertions, 3 deletions

diff --git a/flex.skl b/flex.skl
index 244a930..f97e506 100644
--- a/flex.skl
+++ b/flex.skl
@@ -174,7 +174,12 @@ struct yy_buffer_state
 	 * instead of fread(), to make sure we stop fetching input after
 	 * each newline.
 	 */
-	int is_interactive;
+	int yy_is_interactive;
+
+	/* Whether to try to fill the input buffer when we reach the
+	 * end of it.
+	 */
+	int yy_fill_buffer;
 
 	/* Whether we've seen an EOF on this buffer. */
 	int yy_eof_status;
@@ -591,6 +596,25 @@ int yyFlexLexer::yy_get_next_buffer()
 		YY_FATAL_ERROR(
 		"fatal flex scanner internal error--end of buffer missed" );
 
+	if ( yy_current_buffer->yy_fill_buffer == 0 )
+		{ /* Don't try to fill the buffer, so this is an EOF. */
+		if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
+			{
+			/* We matched a singled characater, the EOB, so
+			 * treat this as a final EOF.
+			 */
+			return EOB_ACT_END_OF_FILE;
+			}
+
+		else
+			{
+			/* We matched some text prior to the EOB, first
+			 * process it.
+			 */
+			return EOB_ACT_LAST_MATCH;
+			}
+		}
+
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
@@ -1004,11 +1028,13 @@ void yyFlexLexer::yy_init_buffer( YY_BUFFER_STATE b, istream* file )
 	b->yy_buf_pos = &b->yy_ch_buf[1];
 
 %-
-	b->is_interactive = file ? isatty( fileno(file) ) : 0;
+	b->yy_is_interactive = file ? isatty( fileno(file) ) : 0;
 %+
-	b->is_interactive = 0;
+	b->yy_is_interactive = 0;
 %*
 
+	b->yy_fill_buffer = 1;
+
 	b->yy_eof_status = EOF_NOT_SEEN;
 	}