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annotate src/xdiff/xprepare.c @ 32174:f84e5db372ea v9.0.1418

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patch 9.0.1418: the included xdiff code is a bit outdated Commit: https://github.com/vim/vim/commit/5fedb8a5ab7addb584728c89e809be190de992bf Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Mon Mar 20 17:30:52 2023 +0000 patch 9.0.1418: the included xdiff code is a bit outdated Problem: The included xdiff code is a bit outdated. Solution: Sync with the latest git xdiff code. (Yee Cheng Chin, closes #12181)
author Bram Moolenaar <Bram@vim.org>
date Mon, 20 Mar 2023 18:45:04 +0100
parents 195e8b1fcbbf
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14696
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1 /*
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2 * LibXDiff by Davide Libenzi ( File Differential Library )
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3 * Copyright (C) 2003 Davide Libenzi
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4 *
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5 * This library is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU Lesser General Public
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7 * License as published by the Free Software Foundation; either
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8 * version 2.1 of the License, or (at your option) any later version.
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9 *
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10 * This library is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Lesser General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Lesser General Public
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16 * License along with this library; if not, see
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17 * <http://www.gnu.org/licenses/>.
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18 *
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19 * Davide Libenzi <davidel@xmailserver.org>
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20 *
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21 */
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22
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23 #include "xinclude.h"
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24
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25
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26 #define XDL_KPDIS_RUN 4
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27 #define XDL_MAX_EQLIMIT 1024
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28 #define XDL_SIMSCAN_WINDOW 100
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29 #define XDL_GUESS_NLINES1 256
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30 #define XDL_GUESS_NLINES2 20
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31
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32
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33 typedef struct s_xdlclass {
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34 struct s_xdlclass *next;
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35 unsigned long ha;
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36 char const *line;
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37 long size;
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38 long idx;
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39 long len1, len2;
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40 } xdlclass_t;
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41
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42 typedef struct s_xdlclassifier {
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43 unsigned int hbits;
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44 long hsize;
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45 xdlclass_t **rchash;
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46 chastore_t ncha;
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47 xdlclass_t **rcrecs;
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48 long alloc;
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49 long count;
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50 long flags;
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51 } xdlclassifier_t;
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52
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53
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54
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55
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56 static int xdl_init_classifier(xdlclassifier_t *cf, long size, long flags);
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57 static void xdl_free_classifier(xdlclassifier_t *cf);
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58 static int xdl_classify_record(unsigned int pass, xdlclassifier_t *cf, xrecord_t **rhash,
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59 unsigned int hbits, xrecord_t *rec);
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60 static int xdl_prepare_ctx(unsigned int pass, mmfile_t *mf, long narec, xpparam_t const *xpp,
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61 xdlclassifier_t *cf, xdfile_t *xdf);
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62 static void xdl_free_ctx(xdfile_t *xdf);
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63 static int xdl_clean_mmatch(char const *dis, long i, long s, long e);
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64 static int xdl_cleanup_records(xdlclassifier_t *cf, xdfile_t *xdf1, xdfile_t *xdf2);
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65 static int xdl_trim_ends(xdfile_t *xdf1, xdfile_t *xdf2);
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66 static int xdl_optimize_ctxs(xdlclassifier_t *cf, xdfile_t *xdf1, xdfile_t *xdf2);
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67
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68
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69
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70
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71 static int xdl_init_classifier(xdlclassifier_t *cf, long size, long flags) {
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72 cf->flags = flags;
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73
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74 cf->hbits = xdl_hashbits((unsigned int) size);
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75 cf->hsize = 1 << cf->hbits;
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76
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77 if (xdl_cha_init(&cf->ncha, sizeof(xdlclass_t), size / 4 + 1) < 0) {
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78
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79 return -1;
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80 }
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81 if (!XDL_CALLOC_ARRAY(cf->rchash, cf->hsize)) {
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82
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83 xdl_cha_free(&cf->ncha);
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84 return -1;
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85 }
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86
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87 cf->alloc = size;
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88 if (!XDL_ALLOC_ARRAY(cf->rcrecs, cf->alloc)) {
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89
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90 xdl_free(cf->rchash);
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91 xdl_cha_free(&cf->ncha);
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92 return -1;
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93 }
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94
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95 cf->count = 0;
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96
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97 return 0;
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98 }
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99
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100
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101 static void xdl_free_classifier(xdlclassifier_t *cf) {
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102
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103 xdl_free(cf->rcrecs);
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104 xdl_free(cf->rchash);
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105 xdl_cha_free(&cf->ncha);
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106 }
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107
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108
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109 static int xdl_classify_record(unsigned int pass, xdlclassifier_t *cf, xrecord_t **rhash,
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110 unsigned int hbits, xrecord_t *rec) {
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111 long hi;
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112 char const *line;
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113 xdlclass_t *rcrec;
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114
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115 line = rec->ptr;
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116 hi = (long) XDL_HASHLONG(rec->ha, cf->hbits);
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117 for (rcrec = cf->rchash[hi]; rcrec; rcrec = rcrec->next)
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118 if (rcrec->ha == rec->ha &&
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119 xdl_recmatch(rcrec->line, rcrec->size,
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120 rec->ptr, rec->size, cf->flags))
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121 break;
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122
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123 if (!rcrec) {
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124 if (!(rcrec = xdl_cha_alloc(&cf->ncha))) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
125
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
126 return -1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
127 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
128 rcrec->idx = cf->count++;
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
129 if (XDL_ALLOC_GROW(cf->rcrecs, cf->count, cf->alloc))
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
130 return -1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
131 cf->rcrecs[rcrec->idx] = rcrec;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
132 rcrec->line = line;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
133 rcrec->size = rec->size;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
134 rcrec->ha = rec->ha;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
135 rcrec->len1 = rcrec->len2 = 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
136 rcrec->next = cf->rchash[hi];
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
137 cf->rchash[hi] = rcrec;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
138 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
139
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
140 (pass == 1) ? rcrec->len1++ : rcrec->len2++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
141
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
142 rec->ha = (unsigned long) rcrec->idx;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
143
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
144 hi = (long) XDL_HASHLONG(rec->ha, hbits);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
145 rec->next = rhash[hi];
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
146 rhash[hi] = rec;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
147
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
148 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
149 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
150
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
151
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
152 static int xdl_prepare_ctx(unsigned int pass, mmfile_t *mf, long narec, xpparam_t const *xpp,
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
153 xdlclassifier_t *cf, xdfile_t *xdf) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
154 unsigned int hbits;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
155 long nrec, hsize, bsize;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
156 unsigned long hav;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
157 char const *blk, *cur, *top, *prev;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
158 xrecord_t *crec;
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
159 xrecord_t **recs;
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
160 xrecord_t **rhash;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
161 unsigned long *ha;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
162 char *rchg;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
163 long *rindex;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
164
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
165 ha = NULL;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
166 rindex = NULL;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
167 rchg = NULL;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
168 rhash = NULL;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
169 recs = NULL;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
170
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
171 if (xdl_cha_init(&xdf->rcha, sizeof(xrecord_t), narec / 4 + 1) < 0)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
172 goto abort;
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
173 if (!XDL_ALLOC_ARRAY(recs, narec))
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
174 goto abort;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
175
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
176 hbits = xdl_hashbits((unsigned int) narec);
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
177 hsize = 1 << hbits;
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
178 if (!XDL_CALLOC_ARRAY(rhash, hsize))
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
179 goto abort;
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
180
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
181 nrec = 0;
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
182 if ((cur = blk = xdl_mmfile_first(mf, &bsize))) {
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
183 for (top = blk + bsize; cur < top; ) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
184 prev = cur;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
185 hav = xdl_hash_record(&cur, top, xpp->flags);
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
186 if (XDL_ALLOC_GROW(recs, nrec + 1, narec))
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
187 goto abort;
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
188 if (!(crec = xdl_cha_alloc(&xdf->rcha)))
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
189 goto abort;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
190 crec->ptr = prev;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
191 crec->size = (long) (cur - prev);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
192 crec->ha = hav;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
193 recs[nrec++] = crec;
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
194 if (xdl_classify_record(pass, cf, rhash, hbits, crec) < 0)
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
195 goto abort;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
196 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
197 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
198
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
199 if (!XDL_CALLOC_ARRAY(rchg, nrec + 2))
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
200 goto abort;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
201
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
202 if ((XDF_DIFF_ALG(xpp->flags) != XDF_PATIENCE_DIFF) &&
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
203 (XDF_DIFF_ALG(xpp->flags) != XDF_HISTOGRAM_DIFF)) {
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
204 if (!XDL_ALLOC_ARRAY(rindex, nrec + 1))
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
205 goto abort;
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
206 if (!XDL_ALLOC_ARRAY(ha, nrec + 1))
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
207 goto abort;
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
208 }
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
209
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
210 xdf->nrec = nrec;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
211 xdf->recs = recs;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
212 xdf->hbits = hbits;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
213 xdf->rhash = rhash;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
214 xdf->rchg = rchg + 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
215 xdf->rindex = rindex;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
216 xdf->nreff = 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
217 xdf->ha = ha;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
218 xdf->dstart = 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
219 xdf->dend = nrec - 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
220
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
221 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
222
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
223 abort:
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
224 xdl_free(ha);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
225 xdl_free(rindex);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
226 xdl_free(rchg);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
227 xdl_free(rhash);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
228 xdl_free(recs);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
229 xdl_cha_free(&xdf->rcha);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
230 return -1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
231 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
232
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
233
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
234 static void xdl_free_ctx(xdfile_t *xdf) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
235
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
236 xdl_free(xdf->rhash);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
237 xdl_free(xdf->rindex);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
238 xdl_free(xdf->rchg - 1);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
239 xdl_free(xdf->ha);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
240 xdl_free(xdf->recs);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
241 xdl_cha_free(&xdf->rcha);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
242 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
243
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
244
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
245 int xdl_prepare_env(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
246 xdfenv_t *xe) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
247 long enl1, enl2, sample;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
248 xdlclassifier_t cf;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
249
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
250 memset(&cf, 0, sizeof(cf));
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
251
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
252 /*
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diff changeset
253 * For histogram diff, we can afford a smaller sample size and
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
254 * thus a poorer estimate of the number of lines, as the hash
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
255 * table (rhash) won't be filled up/grown. The number of lines
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
256 * (nrecs) will be updated correctly anyway by
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
257 * xdl_prepare_ctx().
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
258 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
259 sample = (XDF_DIFF_ALG(xpp->flags) == XDF_HISTOGRAM_DIFF
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
260 ? XDL_GUESS_NLINES2 : XDL_GUESS_NLINES1);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
261
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
262 enl1 = xdl_guess_lines(mf1, sample) + 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
263 enl2 = xdl_guess_lines(mf2, sample) + 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
264
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
265 if (xdl_init_classifier(&cf, enl1 + enl2 + 1, xpp->flags) < 0)
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
266 return -1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
267
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
268 if (xdl_prepare_ctx(1, mf1, enl1, xpp, &cf, &xe->xdf1) < 0) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
269
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
270 xdl_free_classifier(&cf);
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parents:
diff changeset
271 return -1;
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parents:
diff changeset
272 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
273 if (xdl_prepare_ctx(2, mf2, enl2, xpp, &cf, &xe->xdf2) < 0) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
274
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
275 xdl_free_ctx(&xe->xdf1);
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diff changeset
276 xdl_free_classifier(&cf);
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diff changeset
277 return -1;
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diff changeset
278 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
279
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
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diff changeset
280 if ((XDF_DIFF_ALG(xpp->flags) != XDF_PATIENCE_DIFF) &&
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
281 (XDF_DIFF_ALG(xpp->flags) != XDF_HISTOGRAM_DIFF) &&
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
282 xdl_optimize_ctxs(&cf, &xe->xdf1, &xe->xdf2) < 0) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
283
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
284 xdl_free_ctx(&xe->xdf2);
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diff changeset
285 xdl_free_ctx(&xe->xdf1);
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diff changeset
286 xdl_free_classifier(&cf);
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parents:
diff changeset
287 return -1;
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parents:
diff changeset
288 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
289
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
290 xdl_free_classifier(&cf);
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
291
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
292 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
293 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
294
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
295
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
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diff changeset
296 void xdl_free_env(xdfenv_t *xe) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
297
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
298 xdl_free_ctx(&xe->xdf2);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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diff changeset
299 xdl_free_ctx(&xe->xdf1);
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parents:
diff changeset
300 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
301
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
302
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
303 static int xdl_clean_mmatch(char const *dis, long i, long s, long e) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
304 long r, rdis0, rpdis0, rdis1, rpdis1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
305
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
306 /*
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
307 * Limits the window the is examined during the similar-lines
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
308 * scan. The loops below stops when dis[i - r] == 1 (line that
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
309 * has no match), but there are corner cases where the loop
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
310 * proceed all the way to the extremities by causing huge
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
311 * performance penalties in case of big files.
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
312 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
313 if (i - s > XDL_SIMSCAN_WINDOW)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
314 s = i - XDL_SIMSCAN_WINDOW;
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parents:
diff changeset
315 if (e - i > XDL_SIMSCAN_WINDOW)
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Christian Brabandt <cb@256bit.org>
parents:
diff changeset
316 e = i + XDL_SIMSCAN_WINDOW;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
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parents:
diff changeset
317
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
318 /*
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
319 * Scans the lines before 'i' to find a run of lines that either
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
320 * have no match (dis[j] == 0) or have multiple matches (dis[j] > 1).
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
321 * Note that we always call this function with dis[i] > 1, so the
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
322 * current line (i) is already a multimatch line.
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
323 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
324 for (r = 1, rdis0 = 0, rpdis0 = 1; (i - r) >= s; r++) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
325 if (!dis[i - r])
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
326 rdis0++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
327 else if (dis[i - r] == 2)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
328 rpdis0++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
329 else
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
330 break;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
331 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
332 /*
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
333 * If the run before the line 'i' found only multimatch lines, we
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
334 * return 0 and hence we don't make the current line (i) discarded.
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
335 * We want to discard multimatch lines only when they appear in the
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
336 * middle of runs with nomatch lines (dis[j] == 0).
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
337 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
338 if (rdis0 == 0)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
339 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
340 for (r = 1, rdis1 = 0, rpdis1 = 1; (i + r) <= e; r++) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
341 if (!dis[i + r])
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
342 rdis1++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
343 else if (dis[i + r] == 2)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
344 rpdis1++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
345 else
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
346 break;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
347 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
348 /*
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
349 * If the run after the line 'i' found only multimatch lines, we
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
350 * return 0 and hence we don't make the current line (i) discarded.
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
351 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
352 if (rdis1 == 0)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
353 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
354 rdis1 += rdis0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
355 rpdis1 += rpdis0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
356
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
357 return rpdis1 * XDL_KPDIS_RUN < (rpdis1 + rdis1);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
358 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
359
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
360
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
361 /*
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
362 * Try to reduce the problem complexity, discard records that have no
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
363 * matches on the other file. Also, lines that have multiple matches
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
364 * might be potentially discarded if they happear in a run of discardable.
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
365 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
366 static int xdl_cleanup_records(xdlclassifier_t *cf, xdfile_t *xdf1, xdfile_t *xdf2) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
367 long i, nm, nreff, mlim;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
368 xrecord_t **recs;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
369 xdlclass_t *rcrec;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
370 char *dis, *dis1, *dis2;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
371
32174
f84e5db372ea patch 9.0.1418: the included xdiff code is a bit outdated
Bram Moolenaar <Bram@vim.org>
parents: 14696
diff changeset
372 if (!XDL_CALLOC_ARRAY(dis, xdf1->nrec + xdf2->nrec + 2))
14696
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
373 return -1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
374 dis1 = dis;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
375 dis2 = dis1 + xdf1->nrec + 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
376
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
377 if ((mlim = xdl_bogosqrt(xdf1->nrec)) > XDL_MAX_EQLIMIT)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
378 mlim = XDL_MAX_EQLIMIT;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
379 for (i = xdf1->dstart, recs = &xdf1->recs[xdf1->dstart]; i <= xdf1->dend; i++, recs++) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
380 rcrec = cf->rcrecs[(*recs)->ha];
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
381 nm = rcrec ? rcrec->len2 : 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
382 dis1[i] = (nm == 0) ? 0: (nm >= mlim) ? 2: 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
383 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
384
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
385 if ((mlim = xdl_bogosqrt(xdf2->nrec)) > XDL_MAX_EQLIMIT)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
386 mlim = XDL_MAX_EQLIMIT;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
387 for (i = xdf2->dstart, recs = &xdf2->recs[xdf2->dstart]; i <= xdf2->dend; i++, recs++) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
388 rcrec = cf->rcrecs[(*recs)->ha];
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
389 nm = rcrec ? rcrec->len1 : 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
390 dis2[i] = (nm == 0) ? 0: (nm >= mlim) ? 2: 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
391 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
392
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
393 for (nreff = 0, i = xdf1->dstart, recs = &xdf1->recs[xdf1->dstart];
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
394 i <= xdf1->dend; i++, recs++) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
395 if (dis1[i] == 1 ||
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
396 (dis1[i] == 2 && !xdl_clean_mmatch(dis1, i, xdf1->dstart, xdf1->dend))) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
397 xdf1->rindex[nreff] = i;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
398 xdf1->ha[nreff] = (*recs)->ha;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
399 nreff++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
400 } else
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
401 xdf1->rchg[i] = 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
402 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
403 xdf1->nreff = nreff;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
404
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
405 for (nreff = 0, i = xdf2->dstart, recs = &xdf2->recs[xdf2->dstart];
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
406 i <= xdf2->dend; i++, recs++) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
407 if (dis2[i] == 1 ||
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
408 (dis2[i] == 2 && !xdl_clean_mmatch(dis2, i, xdf2->dstart, xdf2->dend))) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
409 xdf2->rindex[nreff] = i;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
410 xdf2->ha[nreff] = (*recs)->ha;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
411 nreff++;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
412 } else
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
413 xdf2->rchg[i] = 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
414 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
415 xdf2->nreff = nreff;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
416
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
417 xdl_free(dis);
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
418
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
419 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
420 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
421
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
422
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
423 /*
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
424 * Early trim initial and terminal matching records.
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
425 */
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
426 static int xdl_trim_ends(xdfile_t *xdf1, xdfile_t *xdf2) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
427 long i, lim;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
428 xrecord_t **recs1, **recs2;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
429
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
430 recs1 = xdf1->recs;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
431 recs2 = xdf2->recs;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
432 for (i = 0, lim = XDL_MIN(xdf1->nrec, xdf2->nrec); i < lim;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
433 i++, recs1++, recs2++)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
434 if ((*recs1)->ha != (*recs2)->ha)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
435 break;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
436
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
437 xdf1->dstart = xdf2->dstart = i;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
438
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
439 recs1 = xdf1->recs + xdf1->nrec - 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
440 recs2 = xdf2->recs + xdf2->nrec - 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
441 for (lim -= i, i = 0; i < lim; i++, recs1--, recs2--)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
442 if ((*recs1)->ha != (*recs2)->ha)
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
443 break;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
444
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
445 xdf1->dend = xdf1->nrec - i - 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
446 xdf2->dend = xdf2->nrec - i - 1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
447
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
448 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
449 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
450
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
451
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
452 static int xdl_optimize_ctxs(xdlclassifier_t *cf, xdfile_t *xdf1, xdfile_t *xdf2) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
453
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
454 if (xdl_trim_ends(xdf1, xdf2) < 0 ||
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
455 xdl_cleanup_records(cf, xdf1, xdf2) < 0) {
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
456
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
457 return -1;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
458 }
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
459
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
460 return 0;
195e8b1fcbbf patch 8.1.0360: using an external diff program is slow and inflexible
Christian Brabandt <cb@256bit.org>
parents:
diff changeset
461 }