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1 /* Normal-format output routines for GNU DIFF.

4 This file is part of GNU DIFF.

6 GNU DIFF is free software; you can redistribute it and/or modify

7 it under the terms of the GNU General Public License as published by

8 the Free Software Foundation; either version 2, or (at your option)

9 any later version.

11 GNU DIFF is distributed in the hope that it will be useful,

12 but WITHOUT ANY WARRANTY; without even the implied warranty of

13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

14 GNU General Public License for more details.

16 */

19 #include "diff.h"

21 static void print_normal_hunk PARAMS((struct change *));

23 /* Print the edit-script SCRIPT as a normal diff.

24 INF points to an array of descriptions of the two files. */

26 void

27 print_normal_script (script)

28 struct change *script;

29 {

30 print_script (script, find_change, print_normal_hunk);

31 }

33 /* Print a hunk of a normal diff.

34 This is a contiguous portion of a complete edit script,

35 describing changes in consecutive lines. */

37 static void

38 print_normal_hunk (hunk)

39 struct change *hunk;

40 {

41 int first0, last0, first1, last1, deletes, inserts;

42 register int i;

44 /* Determine range of line numbers involved in each file. */

45 analyze_hunk (hunk, &first0, &last0, &first1, &last1, &deletes, &inserts);

46 if (!deletes && !inserts)

47 return;

49 begin_output ();

51 /* Print out the line number header for this hunk */

52 print_number_range (',', &files[0], first0, last0);

53 printf_output ("%c", change_letter (inserts, deletes));

54 print_number_range (',', &files[1], first1, last1);

55 printf_output ("\n");

57 /* Print the lines that the first file has. */

58 if (deletes)

59 for (i = first0; i <= last0; i++)

60 print_1_line ("<", &files[0].linbuf[i]);

62 if (inserts && deletes)

63 printf_output ("---\n");

65 /* Print the lines that the second file has. */

66 if (inserts)

67 for (i = first1; i <= last1; i++)

68 print_1_line (">", &files[1].linbuf[i]);

69 }