wiggle.h

   1 /*
   2  * wiggle - apply rejected patches
   3  *
   4  * Copyright (C) 2003 Neil Brown <neilb@cse.unsw.edu.au>
   5  *
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2 of the License, or
  10  *    (at your option) any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License
  18  *    along with this program; if not, write to the Free Software
  19  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *    Author: Neil Brown
  22  *    Email: <neilb@cse.unsw.edu.au>
  23  *    Paper: Neil Brown
  24  *           School of Computer Science and Engineering
  25  *           The University of New South Wales
  26  *           Sydney, 2052
  27  *           Australia
  28  */
  29
  30 #include <stdio.h>
  31 #include <memory.h>
  32 #include        <getopt.h>
  33
  34 struct stream {
  35         char *body;
  36         int len;
  37 };
  38
  39
  40 struct elmnt {
  41         int hash;
  42         char *start;
  43         int len;
  44 };
  45
  46 static  inline int match(struct elmnt *a, struct elmnt *b)
  47 {
  48         return
  49                 a->hash == b->hash &&
  50                 a->len == b->len &&
  51                 strncmp(a->start, b->start, a->len)==0;
  52 }
  53
  54 static inline int ends_line(struct elmnt e)
  55 {
  56         return e.len &&  e.start[e.len-1] == '\n';
  57 }
  58
  59 struct csl {
  60         int a,b;
  61         int len;
  62 };
  63
  64 struct file {
  65         struct elmnt *list;
  66         int elcnt;
  67 };
  68
  69 extern struct stream load_file(char *name);
  70 extern int split_patch(struct stream, struct stream*, struct stream*);
  71 extern int split_merge(struct stream, struct stream*, struct stream*, struct stream*);
  72 extern struct file split_stream(struct stream s, int type, int reverse);
  73 extern struct csl *pdiff(struct file a, struct file b, int chunks);
  74 extern struct csl *diff(struct file a, struct file b);
  75 extern struct csl *diff_partial(struct file a, struct file b,
  76                                 int alo, int ahi, int blo, int bhi);
  77 extern struct csl *worddiff(struct stream f1, struct stream f2,
  78                             struct file *fl1p, struct file *fl2p);
  79
  80 struct ci { int conflicts; int ignored; };
  81 extern struct ci print_merge(FILE *out, struct file *a, struct file *b, struct file *c,
  82                        struct csl *c1, struct csl *c2,
  83                        int words);
  84 extern void printword(FILE *f, struct elmnt e);
  85
  86 extern void die(void);
  87
  88 extern char Version[];
  89 extern char short_options[];
  90 extern struct option long_options[];
  91 extern char Usage[];
  92 extern char Help[];
  93 extern char HelpExtract[];
  94 extern char HelpDiff[];
  95 extern char HelpMerge[];
  96
  97
  98 #define ByLine  0
  99 #define ByWord  1
 100 #define ApproxWord 2