1 files changed, 91 insertions, 0 deletions
diff --git a/src/normal.c b/src/normal.c
new file mode 100644
index 0000000..852a767
--- /dev/null
+++ b/src/normal.c
@@ -0,0 +1,91 @@
+/* Normal-format output routines for GNU DIFF.
+
+   Copyright (C) 1988-1989, 1993, 1995, 1998, 2001, 2006, 2009-2013, 2015-2016
+   Free Software Foundation, Inc.
+
+   This file is part of GNU DIFF.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "diff.h"
+
+static void print_normal_hunk (struct change *);
+
+/* Print the edit-script SCRIPT as a normal diff.
+   INF points to an array of descriptions of the two files.  */
+
+void
+print_normal_script (struct change *script)
+{
+  print_script (script, find_change, print_normal_hunk);
+}
+
+/* Print a hunk of a normal diff.
+   This is a contiguous portion of a complete edit script,
+   describing changes in consecutive lines.  */
+
+static void
+print_normal_hunk (struct change *hunk)
+{
+  lin first0, last0, first1, last1;
+  register lin i;
+
+  /* Determine range of line numbers involved in each file.  */
+  enum changes changes = analyze_hunk (hunk, &first0, &last0, &first1, &last1);
+  if (!changes)
+    return;
+
+  begin_output ();
+
+  /* Print out the line number header for this hunk */
+  set_color_context (LINE_NUMBER_CONTEXT);
+  print_number_range (',', &files[0], first0, last0);
+  fputc (change_letter[changes], outfile);
+  print_number_range (',', &files[1], first1, last1);
+  set_color_context (RESET_CONTEXT);
+  fputc ('\n', outfile);
+
+  /* Print the lines that the first file has.  */
+  if (changes & OLD)
+    {
+      if (first0 <= last0)
+        set_color_context (DELETE_CONTEXT);
+      for (i = first0; i <= last0; i++)
+        {
+          print_1_line_nl ("<", &files[0].linbuf[i], true);
+          if (i == last0)
+            set_color_context (RESET_CONTEXT);
+          if (files[0].linbuf[i + 1][-1] == '\n')
+            putc ('\n', outfile);
+        }
+    }
+
+  if (changes == CHANGED)
+    fputs ("---\n", outfile);
+
+  /* Print the lines that the second file has.  */
+  if (changes & NEW)
+    {
+      if (first1 <= last1)
+        set_color_context (ADD_CONTEXT);
+      for (i = first1; i <= last1; i++)
+        {
+          print_1_line_nl (">", &files[1].linbuf[i], true);
+          if (i == last1)
+            set_color_context (RESET_CONTEXT);
+          if (files[1].linbuf[i + 1][-1] == '\n')
+            putc ('\n', outfile);
+        }
+    }
+}