| 1 | /* Normal-format output routines for GNU DIFF.
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| 2 |
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| 3 | Copyright (C) 1988, 1989, 1993, 1995, 1998, 2001 Free Software
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| 4 | Foundation, Inc.
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| 5 |
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| 6 | This file is part of GNU DIFF.
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| 7 |
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| 8 | GNU DIFF is free software; you can redistribute it and/or modify
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| 9 | it under the terms of the GNU General Public License as published by
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| 10 | the Free Software Foundation; either version 2, or (at your option)
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| 11 | any later version.
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| 12 |
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| 13 | GNU DIFF is distributed in the hope that it will be useful,
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | GNU General Public License for more details.
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| 17 |
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| 18 | You should have received a copy of the GNU General Public License
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| 19 | along with this program; see the file COPYING.
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| 20 | If not, write to the Free Software Foundation,
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| 21 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 22 |
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| 23 | #include "diff.h"
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| 24 |
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| 25 | static void print_normal_hunk (struct change *);
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| 26 |
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| 27 | /* Print the edit-script SCRIPT as a normal diff.
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| 28 | INF points to an array of descriptions of the two files. */
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| 29 |
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| 30 | void
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| 31 | print_normal_script (struct change *script)
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| 32 | {
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| 33 | print_script (script, find_change, print_normal_hunk);
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| 34 | }
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| 35 |
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| 36 | /* Print a hunk of a normal diff.
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| 37 | This is a contiguous portion of a complete edit script,
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| 38 | describing changes in consecutive lines. */
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| 39 |
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| 40 | static void
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| 41 | print_normal_hunk (struct change *hunk)
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| 42 | {
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| 43 | lin first0, last0, first1, last1;
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| 44 | register lin i;
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| 45 |
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| 46 | /* Determine range of line numbers involved in each file. */
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| 47 | enum changes changes = analyze_hunk (hunk, &first0, &last0, &first1, &last1);
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| 48 | if (!changes)
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| 49 | return;
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| 50 |
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| 51 | begin_output ();
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| 52 |
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| 53 | /* Print out the line number header for this hunk */
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| 54 | print_number_range (',', &files[0], first0, last0);
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| 55 | fprintf (outfile, "%c", change_letter[changes]);
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| 56 | print_number_range (',', &files[1], first1, last1);
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| 57 | fprintf (outfile, "\n");
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| 58 |
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| 59 | /* Print the lines that the first file has. */
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| 60 | if (changes & OLD)
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| 61 | for (i = first0; i <= last0; i++)
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| 62 | print_1_line ("<", &files[0].linbuf[i]);
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| 63 |
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| 64 | if (changes == CHANGED)
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| 65 | fprintf (outfile, "---\n");
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| 66 |
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| 67 | /* Print the lines that the second file has. */
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| 68 | if (changes & NEW)
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| 69 | for (i = first1; i <= last1; i++)
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| 70 | print_1_line (">", &files[1].linbuf[i]);
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| 71 | }
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