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10 reyssat 1
/*    Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
2
 *
3
 *  This program is free software; you can redistribute it and/or modify
4
 *  it under the terms of the GNU General Public License as published by
5
 *  the Free Software Foundation; either version 2 of the License, or
6
 *  (at your option) any later version.
7
 *
8
 *  This program is distributed in the hope that it will be useful,
9
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 *  GNU General Public License for more details.
12
 *
13
 *  You should have received a copy of the GNU General Public License
14
 *  along with this program; if not, write to the Free Software
15
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16
 */
17
 
7676 bpr 18
/* Versatile translation according to a dictionary */
10 reyssat 19
 
20
/*************** Customization: change values hereafter ****************/
21
 
7676 bpr 22
/* limit of dictionary entries */
10 reyssat 23
#define entrylim 32768
7676 bpr 24
/* limit of dictionary length */
25
#define diclim 2*1024*1024
26
/* limit of source length */
10 reyssat 27
#define sourcelim 16*1024*1024
28
 
29
/***************** Nothing should need change hereafter *****************/
8185 bpr 30
#include "../Lib/libwims.h"
8123 bpr 31
#include "suffix.h"
10 reyssat 32
 
33
char *inpbuf, outbuf[2*(MAX_LINELEN+1)];
34
char *dicbuf;
35
struct entry {
36
    unsigned char *original, *replace;
37
    int olen,earlier;
38
} entry[entrylim];
39
int entrycount;
40
 
41
enum {
42
    unk_delete, unk_leave, unk_replace
43
};
44
 
45
int has_digits=0;
46
int unknown_type=unk_delete;
47
int nocase=0,leaveline=0,fromfile=0;
48
char *unknown, unkbuf[1024];
49
 
7676 bpr 50
/* Exit without translating anything */
10 reyssat 51
void escape(void)
52
{
53
    printf("%s",inpbuf); exit(0);
54
}
55
 
7676 bpr 56
/* strip trailing spaces; return string end. */
8100 bpr 57
char *strip_trailing_spaces2(char *p)
10 reyssat 58
{
59
    char *pp;
60
    if(*p==0) return p;
61
    for(pp=p+strlen(p)-1; pp>=p && isspace(*pp); *(pp--)=0);
62
    return pp;
63
}
64
 
65
int compare(int i1, const char *s2)
66
{
67
    int k;
3247 bpr 68
    if(nocase) k=strncasecmp((char*)entry[i1].original,s2,entry[i1].olen);
69
    else k=strncmp((char*)entry[i1].original,s2,entry[i1].olen);
10 reyssat 70
    if(k==0 && (isalnum(*(s2+entry[i1].olen)) || (*(s2+entry[i1].olen)&128)!=0)) return -1;
71
    else return k;
72
}
73
 
7676 bpr 74
/* searches a list. Returns index if found, -1 if nomatch.
8149 bpr 75
 * Uses binary search, list must be sorted.
76
 */
8100 bpr 77
int search_list2(struct entry *list, int items, size_t item_size, const char *str)
10 reyssat 78
{
79
    int i1,i2,j,k,t,t1;
80
    unsigned char c;
81
 
82
    if(items<=0) return -1;
83
    j=0; c=str[0];
84
    k=list[0].original[0]-c; if(k==0) k=compare(0,str);
85
    if(k==0) goto more; if(k>0) return -1;
86
    j=items-1; k=list[j].original[0]-c; if(k==0) k=compare(j,str);
87
    if(k==0) return j;
88
    if(k>0) for(i1=0,i2=j;i2>i1+1;) {
7676 bpr 89
      j=i1+(i2-i1)/2;
90
      k=list[j].original[0]-c; if(k==0) k=compare(j,str);
91
      if(k==0) goto more;
92
      if(k>0) {i2=j; continue;}
93
      if(k<0) {i1=j; continue;}
10 reyssat 94
    }
95
    if(k>0) {j--;k=compare(j,str);}
96
    more:
97
    if((t=list[j].earlier)<0) {
7676 bpr 98
      if(k==0) return j; else return -1;
10 reyssat 99
    }
100
    if(compare(t,str)!=0) return -1;
101
    for(j=t1=t,k=0;j<items && list[j].earlier==t1 && (k=compare(j,str))<=0; j++) {
7676 bpr 102
      if(k==0) t=j;
10 reyssat 103
    }
104
    return t;
105
}
106
 
8123 bpr 107
/* modify a string. Bufferlen must be at least MAX_LINELEN */
8100 bpr 108
void string_modify3(char *start, char *bad_beg, char *bad_end, char *good,...)
10 reyssat 109
{
110
    char buf[MAX_LINELEN+1];
111
    va_list vp;
7676 bpr 112
 
10 reyssat 113
    va_start(vp,good);
114
    vsnprintf(buf,sizeof(buf),good,vp); va_end(vp);
115
    if(strlen(start)-(bad_end-bad_beg)+strlen(buf)>=2*MAX_LINELEN)
7676 bpr 116
      return; /* this is an error situation. */
10 reyssat 117
    strcat(buf,bad_end);
3718 reyssat 118
    ovlstrcpy(bad_beg,buf);
10 reyssat 119
}
120
 
7676 bpr 121
/* change all spaces into ' ', and collapse multiple occurences */
8100 bpr 122
void singlespace2(char *p)
10 reyssat 123
{
124
    char *pp, *p2;
125
    for(pp=p;*pp;pp++) {
7676 bpr 126
      if(!isspace(*pp)) continue;
127
      if(leaveline) {
128
          if(*pp==13) ovlstrcpy(pp,pp+1);
129
          if(*pp=='\n') {
130
            pp++;
131
            gopt: for(p2=pp; isspace(*p2) && *p2!='\n'; p2++);
132
            if(p2>pp) ovlstrcpy(pp,p2); pp--;
133
          }
134
          else {
135
            pp++; if(!isspace(*pp) || *pp=='\n') continue;
136
            goto gopt;
137
          }
138
      }
139
      else {
140
          if(*pp!=' ') *pp=' ';
141
          pp++; if(!isspace(*pp)) continue;
142
          for(p2=pp;isspace(*p2);p2++);
143
          ovlstrcpy(pp,p2); pp--;
144
      }
10 reyssat 145
    }
146
}
147
 
7676 bpr 148
/* Prepare dictionary */
10 reyssat 149
void prepare_dic(void)
150
{
151
    int i,l;
152
    FILE *dicf;
153
    char *fname, *p1, *p2, *pp, buf[1024];
154
    long int flen;
155
    fname=getenv("w_dictionary");
156
    if(fname==NULL || *fname==0 || *fname=='/' || strstr(fname,"..")) {
7676 bpr 157
      p1=getenv("w_module"); if(p1 && strncmp(p1,"classes/",strlen("classes/"))==0) {
158
          p1=getenv("w_wims_class"); p2=getenv("w_wims_home");
159
          if(p1 && p2) {
160
            snprintf(buf,sizeof(buf),"%s/log/classes/%s/",p2,p1);
161
            if(strncmp(fname,buf,strlen(buf))!=0) escape();
162
          }
163
          else escape();
164
      }
165
      else {
166
          p1=getenv("untrust"); if(p1 && strstr(p1,"yes")) escape();
167
      }
10 reyssat 168
    }
6876 bpr 169
/* replace escape() by return if there is some suffix dictionary, */
170
 
171
    dicf=fopen(fname,"r"); if(dicf==NULL) return;
10 reyssat 172
    fseek(dicf,0,SEEK_END);flen=ftell(dicf); fseek(dicf,0,SEEK_SET);
173
    if(flen>diclim) escape();
174
    dicbuf=xmalloc(flen+16);flen=fread(dicbuf,1,flen,dicf);
175
    fclose(dicf);
176
    if(flen>0 && flen<diclim) dicbuf[flen]=0;
177
    else escape();
178
    for(i=0,p1=dicbuf;p1!=NULL && *p1!=0 && i<entrylim;p1=p2) {
7676 bpr 179
      p2=strchr(p1+1,'\n'); if(p2>p1) *p2++=0;
180
      pp=strchr(p1,':'); if(pp==NULL) continue;
181
      *pp++=0;
8100 bpr 182
      strip_trailing_spaces2(p1); strip_trailing_spaces2(pp);
183
      singlespace2(p1);
7676 bpr 184
      p1=find_word_start(p1); pp=find_word_start(pp);
185
      if(*p1==0) continue;
186
      if(has_digits==0) {
187
          char *p;
188
          for(p=p1;*p!=0 && p<pp && !isdigit(*p);p++);
189
          if(isdigit(*p)) has_digits=1;
190
      }
191
      entry[i].original=(unsigned char*)p1;
8100 bpr 192
      entry[i].replace=(unsigned char*)pp;
7676 bpr 193
      entry[i].olen=l=strlen(p1); entry[i].earlier=-1;
194
      if(i>0) {
195
          int l1,l2;
196
          l1=entry[i-1].earlier; if(l1>=0) l2=entry[l1].olen;
197
          else {l2=entry[i-1].olen;l1=i-1;}
198
          if(l>l2 && isspace(p1[l2])
199
             && strncmp((char*)entry[l1].original,p1,l2)==0)
200
            entry[i].earlier=entry[i-1].earlier=l1;
201
      }
202
      i++;
10 reyssat 203
    }
204
    entrycount=i; if(entrycount<=0) escape();
205
}
206
 
7676 bpr 207
/* now make the translation. */
10 reyssat 208
void translate(void)
209
{
210
    char *p1, *p2, *pp;
211
    int t;
212
 
213
    for(p1=find_word_start(outbuf);
7676 bpr 214
      p1!=NULL && p1-outbuf<MAX_LINELEN && *p1!=0;
215
      p1=p2) {
216
      p2=find_word_end(p1);
217
      for(pp=p1;pp<p2 &&
218
          ((!has_digits && isalpha(*pp)) ||
219
           (has_digits && isalnum(*pp)) || (*pp&128)!=0 ||
220
           strchr("_",*pp)!=NULL);pp++);
221
      p2=find_word_start(p2);
222
      if(pp==p1 ||
223
         (has_digits==0 && isdigit(*pp)) ||
224
         (*pp!=0 && !isspace(*pp) && strchr(",.?!/;",*pp)==NULL)) continue;
8100 bpr 225
      t=search_list2(entry,entrycount,sizeof(entry[0]),p1);
7676 bpr 226
      if(t<0) {
227
          switch(unknown_type) {
228
            case unk_leave: break;
229
            case unk_delete: {
230
                ovlstrcpy(p1,find_word_start(pp)); p2=p1;
231
                break;
232
            }
233
            case unk_replace: {
8100 bpr 234
                string_modify3(outbuf,p1,pp,unkbuf);
7676 bpr 235
                p2=find_word_start(p1+strlen(unkbuf));
236
            }
237
          }
238
          continue;
239
      }
8100 bpr 240
      string_modify3(outbuf,p1,p1+strlen((char*)entry[t].original),
7676 bpr 241
                  (char*)entry[t].replace);
242
      p2=find_word_start(p1+strlen((char*)entry[t].replace));
10 reyssat 243
    }
244
    outbuf[MAX_LINELEN]=0; printf("%s",outbuf);
245
}
246
 
247
void switches(void)
248
{
249
    char *sw;
250
    unknown=getenv("w_translator_unknown");
251
    if(unknown==NULL) unknown="";
252
    snprintf(unkbuf,sizeof(unkbuf),"%s",find_word_start(unknown));
253
    *find_word_end(unkbuf)=0;
254
    if(strcasecmp(unkbuf,"leave")==0) unknown_type=unk_leave;
255
    else if(unkbuf[0]!=0) unknown_type=unk_replace;
256
    sw=getenv("w_translator_switch");
257
    if(sw==NULL) return;
258
    if(strstr(sw,"leaveline")) leaveline=1;
259
    if(strstr(sw,"nocase")) nocase=1;
260
    if(strstr(sw,"file")) fromfile=1;
261
}
262
 
263
int main()
264
{
265
    char c, *p1, *p2, *s;
266
    unsigned int l;
267
 
268
    switches();
269
    if(!fromfile) {
7676 bpr 270
      s=getenv("wims_exec_parm");
271
      if(s==NULL || *s==0) return 0; /* Nothing to translate */
272
      l=strlen(s); if(l<=0 || l>sourcelim) return 0; /* too long */
273
      inpbuf=xmalloc(l+16); memmove(inpbuf,s,l+1);
10 reyssat 274
    }
275
    else {
7676 bpr 276
      FILE *f;
277
      s=getenv("translator_input"); if(s==NULL || *s==0) return 0;
278
      f=fopen(s,"r"); if(f==NULL) return 0; /* no file */
279
      fseek(f,0,SEEK_END); l=ftell(f); fseek(f,0,SEEK_SET);
280
      if(l<=0 || l>sourcelim) return 0; /* too long */
281
      inpbuf=xmalloc(l+16); (void)fread(inpbuf,1,l,f); fclose(f); inpbuf[l]=0;
10 reyssat 282
    }
283
    p1=inpbuf; prepare_dic();
284
    if(leaveline) c='\n'; else c=' ';
285
    do {
7676 bpr 286
      l=strlen(p1);
287
      if(l>MAX_LINELEN-1024) l=MAX_LINELEN-1024; p2=p1+l;
288
      if(*p2) {
289
          while(p2>p1 && *p2!=c) p2--;
290
      }
291
      if(p2<=p1) return 0;
292
      memmove(outbuf,p1,p2-p1); outbuf[p2-p1]=0;
8100 bpr 293
      singlespace2(outbuf);
7676 bpr 294
      s=getenv("w_suffix_dictionary");
295
      if(s!=NULL && *s!=0) suffix(outbuf,s);
296
      translate();
297
      if(*p2==c) {printf("%c",c); p1=++p2;}
10 reyssat 298
    }
299
    while(*p2);
300
    return 0;
301
}