1 /* Normal-format output routines for GNU DIFF. 2 Copyright (C) 1988, 1989, 1993, 1998 Free Software Foundation, Inc. 3 4 This file is part of GNU DIFF. 5 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. 10 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. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU DIFF; see the file COPYING. If not, write to 18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ 19 20 21 #include "diff.h" 22 23 static void print_normal_hunk PARAMS((struct change *)); 24 25 /* Print the edit-script SCRIPT as a normal diff. 26 INF points to an array of descriptions of the two files. */ 27 28 void 29 print_normal_script (script) 30 struct change *script; 31 { 32 print_script (script, find_change, print_normal_hunk); 33 } 34 35 /* Print a hunk of a normal diff. 36 This is a contiguous portion of a complete edit script, 37 describing changes in consecutive lines. */ 38 39 static void 40 print_normal_hunk (hunk) 41 struct change *hunk; 42 { 43 int first0, last0, first1, last1, deletes, inserts; 44 register int i; 45 46 /* Determine range of line numbers involved in each file. */ 47 analyze_hunk (hunk, &first0, &last0, &first1, &last1, &deletes, &inserts); 48 if (!deletes && !inserts) 49 return; 50 51 begin_output (); 52 53 /* Print out the line number header for this hunk */ 54 print_number_range (',', &files[0], first0, last0); 55 printf_output ("%c", change_letter (inserts, deletes)); 56 print_number_range (',', &files[1], first1, last1); 57 printf_output ("\n"); 58 59 /* Print the lines that the first file has. */ 60 if (deletes) 61 for (i = first0; i <= last0; i++) 62 print_1_line ("<", &files[0].linbuf[i]); 63 64 if (inserts && deletes) 65 printf_output ("---\n"); 66 67 /* Print the lines that the second file has. */ 68 if (inserts) 69 for (i = first1; i <= last1; i++) 70 print_1_line (">", &files[1].linbuf[i]); 71 } 72