diff options
Diffstat (limited to 'contrib/diff/src/normal.c')
-rw-r--r-- | contrib/diff/src/normal.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/contrib/diff/src/normal.c b/contrib/diff/src/normal.c new file mode 100644 index 0000000..4a01596 --- /dev/null +++ b/contrib/diff/src/normal.c @@ -0,0 +1,71 @@ +/* Normal-format output routines for GNU DIFF. + + Copyright (C) 1988, 1989, 1993, 1995, 1998, 2001 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 this program; see the file COPYING. + If not, write to the Free Software Foundation, + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#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 */ + print_number_range (',', &files[0], first0, last0); + fprintf (outfile, "%c", change_letter[changes]); + print_number_range (',', &files[1], first1, last1); + fprintf (outfile, "\n"); + + /* Print the lines that the first file has. */ + if (changes & OLD) + for (i = first0; i <= last0; i++) + print_1_line ("<", &files[0].linbuf[i]); + + if (changes == CHANGED) + fprintf (outfile, "---\n"); + + /* Print the lines that the second file has. */ + if (changes & NEW) + for (i = first1; i <= last1; i++) + print_1_line (">", &files[1].linbuf[i]); +} |