ref: 20429fb04fd109dbd80932170e41ced8521547fe
dir: /sys/src/ape/cmd/diff/normal.c/
/* Normal-format output routines for GNU DIFF. Copyright (C) 1988, 1989, 1993 Free Software Foundation, Inc. This file is part of GNU DIFF. GNU DIFF 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 2, or (at your option) any later version. GNU DIFF 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 GNU DIFF; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "diff.h" static void print_normal_hunk PARAMS((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 (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 (hunk) struct change *hunk; { int first0, last0, first1, last1, deletes, inserts; register int i; /* Determine range of line numbers involved in each file. */ analyze_hunk (hunk, &first0, &last0, &first1, &last1, &deletes, &inserts); if (!deletes && !inserts) return; begin_output (); /* Print out the line number header for this hunk */ print_number_range (',', &files[0], first0, last0); fprintf (outfile, "%c", change_letter (inserts, deletes)); print_number_range (',', &files[1], first1, last1); fprintf (outfile, "\n"); /* Print the lines that the first file has. */ if (deletes) for (i = first0; i <= last0; i++) print_1_line ("<", &files[0].linbuf[i]); if (inserts && deletes) fprintf (outfile, "---\n"); /* Print the lines that the second file has. */ if (inserts) for (i = first1; i <= last1; i++) print_1_line (">", &files[1].linbuf[i]); }