29 #define minus_minus 01
36 #define dot_dot_dot 016
37 #define colon_colon 06
38 #define period_ast 026
39 #define minus_gt_ast 027 \
42 #define longest_name 1000
43 #define long_buf_size (buf_size+longest_name)
44 #define xisspace(c) (isspace(c) &&((unsigned char) c<0200) )
45 #define xisupper(c) (isupper(c) &&((unsigned char) c<0200) ) \
47 #define max_include_depth 10 \
49 #define max_file_name_length 60
50 #define cur_file file[include_depth]
51 #define cur_file_name file_name[include_depth]
52 #define cur_line line[include_depth]
53 #define web_file file[0]
54 #define web_file_name file_name[0] \
56 #define lines_dont_match (change_limit-change_buffer!=limit-buffer|| \
57 strncmp(buffer,change_buffer,limit-buffer) ) \
59 #define if_section_start_make_pending(b) {*limit= '!'; \
60 for(loc= buffer;xisspace(*loc) ;loc++) ; \
62 if(*loc=='@'&&(xisspace(*(loc+1) ) ||*(loc+1) =='*') ) change_pending= b; \
65 #define max_sections 2000 \
68 #define too_long() {include_depth--; \
69 err_print("! Include file name too long") ;goto restart;} \
71 #define max_bytes 90000 \
73 #define max_names 4000 \
76 #define length(c) (c+1) ->byte_start-(c) ->byte_start
77 #define print_id(c) term_write((c) ->byte_start,length((c) ) ) \
79 #define hash_size 353 \
82 #define rlink dummy.Rlink
83 #define root name_dir->rlink \
86 #define first_chunk(p) ((p) ->byte_start+2)
87 #define prefix_length(p) (int) ((unsigned char) *((p) ->byte_start) *256+ \
88 (unsigned char) *((p) ->byte_start+1) )
89 #define set_prefix_length(p,m) (*((p) ->byte_start) = (m) /256, \
90 *((p) ->byte_start+1) = (m) %256) \
98 #define bad_extension 5 \
101 #define harmless_message 1
102 #define error_message 2
103 #define fatal_message 3
104 #define mark_harmless {if(history==spotless) history= harmless_message;}
105 #define mark_error history= error_message \
107 #define confusion(s) fatal("! This can't happen: ",s) \
110 #define show_banner flags['b']
111 #define show_progress flags['p']
112 #define show_stats flags['s']
113 #define show_happiness flags['h'] \
115 #define update_terminal fflush(stdout) \
117 #define new_line putchar('\n')
118 #define putxchar putchar
119 #define term_write(a,b) fflush(stdout) ,fwrite(a,sizeof(char) ,b,stdout)
120 #define C_printf(c,a) fprintf(C_file,c,a)
121 #define C_putc(c) putc(c,C_file) \
129 typedef short boolean;
135 char buffer[long_buf_size];
136 char*buffer_end= buffer+buf_size-2;
144 FILE*file[max_include_depth];
146 char file_name[max_include_depth][max_file_name_length];
148 char change_file_name[max_file_name_length];
149 char alt_web_file_name[max_file_name_length];
150 int line[max_include_depth];
153 boolean input_has_ended;
155 boolean web_file_open= 0;
160 typedef unsigned short sixteen_bits;
161 sixteen_bits section_count;
162 boolean changed_section[max_sections];
163 boolean change_pending;
165 boolean print_where= 0;
170 typedef struct name_info{
175 struct name_info*link;
181 struct name_info*Rlink;
187 #line 1062 "common.w"
195 typedef name_info*name_pointer;
196 char byte_mem[max_bytes];
197 char*byte_mem_end= byte_mem+max_bytes-1;
198 name_info name_dir[max_names];
199 name_pointer name_dir_end= name_dir+max_names-1;
204 name_pointer name_ptr;
210 typedef name_pointer*hash_pointer;
211 name_pointer hash[hash_size];
212 hash_pointer hash_end= hash+hash_size-1;
216 #line 1082 "common.w"
218 int history= spotless;
221 #line 1220 "common.w"
225 char C_file_name[max_file_name_length];
226 char tex_file_name[max_file_name_length];
227 char idx_file_name[max_file_name_length];
228 char scn_file_name[max_file_name_length];
232 #line 1370 "common.w"
250 char change_buffer[buf_size];
259 extern int names_match();
269 extern void init_node();
272 #line 1017 "common.w"
274 int section_name_cmp();
277 #line 1092 "common.w"
282 #line 1140 "common.w"
285 extern void print_stats();
288 #line 1173 "common.w"
290 void fatal(),overflow();
293 #line 1251 "common.w"
298 #line 1411 "common.w"
302 extern char*strcpy();
303 extern int strncmp();
304 extern char*strncpy();
319 name_dir->byte_start= byte_ptr= byte_mem;
320 name_ptr= name_dir+1;
321 name_ptr->byte_start= byte_mem;
326 for(h= hash;h<=hash_end;*h++= NULL);
337 #line 1233 "common.w"
339 show_banner= show_happiness= show_progress= 1;
345 #line 1377 "common.w"
348 if(program==ctangle){
349 if((C_file= fopen(C_file_name,"w"))==NULL)
350 fatal("! Cannot open output file ",C_file_name);
354 if((tex_file= fopen(tex_file_name,"w"))==NULL)
355 fatal("! Cannot open output file ",tex_file_name);
371 if(feof(fp))return(0);
373 while(k<=buffer_end&&(c= getc(fp))!=EOF&&c!='\n')
374 if((*(k++)= c)!=' ')limit= k;
376 if((c= getc(fp))!=EOF&&c!='\n'){
377 ungetc(c,fp);loc= buffer;err_print("! Input line too long");
380 if(c==EOF&&limit==buffer)return(0);
389 prime_the_change_buffer()
391 change_limit= change_buffer;
397 if(!input_ln(change_file))return;
398 if(limit<buffer+2)continue;
399 if(buffer[0]!='@')continue;
400 if(xisupper(buffer[1]))buffer[1]= tolower(buffer[1]);
401 if(buffer[1]=='x')break;
402 if(buffer[1]=='y'||buffer[1]=='z'||buffer[1]=='i'){
404 err_print("! Missing @x in change file");
417 if(!input_ln(change_file)){
418 err_print("! Change file ended after @x");
422 }while(limit==buffer);
431 change_limit= change_buffer+(limit-buffer);
432 strncpy(change_buffer,buffer,limit-buffer+1);
447 if(lines_dont_match)return;
449 if(!changed_section[section_count]){
450 if_section_start_make_pending(1);
451 if(!change_pending)changed_section[section_count]= 1;
454 changing= 1;print_where= 1;change_line++;
455 if(!input_ln(change_file)){
456 err_print("! Change file ended before @y");
458 change_limit= change_buffer;changing= 0;
461 if(limit> buffer+1&&buffer[0]=='@'){
462 char xyz_code= xisupper(buffer[1])?tolower(buffer[1]):buffer[1];
466 if(xyz_code=='x'||xyz_code=='z'){
467 loc= buffer+2;err_print("! Where is the matching @y?");
470 else if(xyz_code=='y'){
473 printf("\n! Hmm... %d ",n);
474 err_print("of the preceding lines failed to match");
477 change_depth= include_depth;
489 change_limit= change_buffer+(limit-buffer);
490 strncpy(change_buffer,buffer,limit-buffer+1);
496 changing= 0;cur_line++;
497 while(!input_ln(cur_file)){
498 if(include_depth==0){
499 err_print("! CWEB file ended during a change");
501 input_has_ended= 1;return;
503 include_depth--;cur_line++;
505 if(lines_dont_match)n++;
515 limit= buffer;loc= buffer+1;buffer[0]= ' ';
519 if((web_file= fopen(web_file_name,"r"))==NULL){
520 strcpy(web_file_name,alt_web_file_name);
521 if((web_file= fopen(web_file_name,"r"))==NULL)
522 fatal("! Cannot open input file ",web_file_name);
527 if((change_file= fopen(change_file_name,"r"))==NULL)
528 fatal("! Cannot open change file ",change_file_name);
533 include_depth= 0;cur_line= 0;change_line= 0;
534 change_depth= include_depth;
535 changing= 1;prime_the_change_buffer();changing= !changing;
536 limit= buffer;loc= buffer+1;buffer[0]= ' ';input_has_ended= 0;
545 if(changing&&include_depth==change_depth)
550 if(!input_ln(change_file)){
551 err_print("! Change file ended without @z");
553 buffer[0]= '@';buffer[1]= 'z';limit= buffer+2;
557 if_section_start_make_pending(0);
559 changed_section[section_count]= 1;change_pending= 0;
564 if(xisupper(buffer[1]))buffer[1]= tolower(buffer[1]);
565 if(buffer[1]=='x'||buffer[1]=='y'){
567 err_print("! Where is the matching @z?");
570 else if(buffer[1]=='z'){
571 prime_the_change_buffer();changing= !changing;print_where= 1;
580 if(!changing||include_depth> change_depth){
585 while(!input_ln(cur_file)){
587 if(include_depth==0){input_has_ended= 1;break;}
589 fclose(cur_file);include_depth--;
590 if(changing&&include_depth==change_depth)break;
594 if(!changing&&!input_has_ended)
595 if(limit-buffer==change_limit-change_buffer)
596 if(buffer[0]==change_buffer[0])
597 if(change_limit> change_buffer)check_change();
603 if(changing&&include_depth==change_depth)goto restart;
605 if(input_has_ended)return 0;
606 loc= buffer;*limit= ' ';
607 if(buffer[0]=='@'&&(buffer[1]=='i'||buffer[1]=='I')){
608 loc= buffer+2;*limit= '"';
609 while(*loc==' '||*loc=='\t')loc++;
611 err_print("! Include file name not given");
615 if(include_depth>=max_include_depth-1){
616 err_print("! Too many nested includes");
624 char temp_file_name[max_file_name_length];
625 char*cur_file_name_end= cur_file_name+max_file_name_length-1;
626 char*k= cur_file_name,*kk;
631 while(*loc!='"'&&k<=cur_file_name_end)*k++= *loc++;
632 if(loc==limit)k= cur_file_name_end+1;
634 while(*loc!=' '&&*loc!='\t'&&*loc!='"'&&k<=cur_file_name_end)*k++= *loc++;
635 if(k> cur_file_name_end)too_long();
638 if((cur_file= fopen(cur_file_name,"r"))!=NULL){
639 cur_line= 0;print_where= 1;
642 kk= getenv("CWEBINPUTS");
644 if((l= strlen(kk))> max_file_name_length-2)too_long();
645 strcpy(temp_file_name,kk);
649 if((l= strlen(CWEBINPUTS))> max_file_name_length-2)too_long();
650 strcpy(temp_file_name,CWEBINPUTS);
656 if(k+l+2>=cur_file_name_end)too_long();
658 for(;k>=cur_file_name;k--)*(k+l+1)= *k;
659 strcpy(cur_file_name,temp_file_name);
660 cur_file_name[l]= '/';
661 if((cur_file= fopen(cur_file_name,"r"))!=NULL){
662 cur_line= 0;print_where= 1;
666 include_depth--;err_print("! Cannot open include file");goto restart;
681 if(change_limit!=change_buffer){
682 strncpy(buffer,change_buffer,change_limit-change_buffer+1);
683 limit= buffer+(int)(change_limit-change_buffer);
684 changing= 1;change_depth= include_depth;loc= buffer;
685 err_print("! Change file entry did not match");
694 id_lookup(first,last,t)
703 if(last==NULL)for(last= first;*last!='\0';last++);
708 h= (unsigned char)*i;
709 while(++i<last)h= (h+h+(int)((unsigned char)*i))%hash_size;
719 while(p&&!names_match(p,first,l,t))p= p->link;
722 p->link= hash[h];hash[h]= p;
728 if(p==name_ptr)/*39:*/
731 if(byte_ptr+l> byte_mem_end)overflow("byte memory");
732 if(name_ptr>=name_dir_end)overflow("name");
733 strncpy(byte_ptr,first,l);
734 (++name_ptr)->byte_start= byte_ptr+= l;
735 if(program==cweave)init_p(p,t);
748 print_section_name(p)
751 char*ss,*s= first_chunk(p);
754 ss= (p+1)->byte_start-1;
756 term_write(s,ss-s);p= q->link;q= p;
758 term_write(s,ss+1-s);p= name_dir;q= NULL;
762 if(q)term_write("...",3);
769 sprint_section_name(dest,p)
773 char*ss,*s= first_chunk(p);
776 ss= (p+1)->byte_start-1;
782 strncpy(dest,s,ss-s),dest+= ss-s;
795 char*s= first_chunk(p);
796 int l= prefix_length(p);
798 if(s+l<(p+1)->byte_start)term_write("...",3);
804 int web_strcmp(j,j_len,k,k_len)
808 char*j1= j+j_len,*k1= k+k_len;
809 while(k<k1&&j<j1&&*j==*k)k++,j++;
810 if(k==k1)if(j==j1)return equal;
811 else return extension;
812 else if(j==j1)return prefix;
813 else if(*j<*k)return less;
821 add_section_name(par,c,first,last,ispref)
828 name_pointer p= name_ptr;
829 char*s= first_chunk(p);
830 int name_len= last-first+ispref;
831 if(s+name_len> byte_mem_end)overflow("byte memory");
832 if(name_ptr+1>=name_dir_end)overflow("name");
833 (++name_ptr)->byte_start= byte_ptr= s+name_len;
837 name_ptr->link= name_dir;
838 (++name_ptr)->byte_start= byte_ptr;
840 set_prefix_length(p,name_len);
841 strncpy(s,first,name_len);
845 return par==NULL?(root= p):c==less?(par->llink= p):(par->rlink= p);
852 extend_section_name(p,first,last,ispref)
860 int name_len= last-first+ispref;
861 if(name_ptr>=name_dir_end)overflow("name");
862 while(q->link!=name_dir)q= q->link;
864 s= name_ptr->byte_start;
865 name_ptr->link= name_dir;
866 if(s+name_len> byte_mem_end)overflow("byte memory");
867 (++name_ptr)->byte_start= byte_ptr= s+name_len;
868 strncpy(s,first,name_len);
869 if(ispref)*(byte_ptr-1)= ' ';
876 section_lookup(first,last,ispref)
881 name_pointer p= root;
882 name_pointer q= NULL;
883 name_pointer r= NULL;
884 name_pointer par= NULL;
886 int name_len= last-first+1;
891 c= web_strcmp(first,name_len,first_chunk(p),prefix_length(p));
892 if(c==less||c==greater){
895 p= (c==less?p->llink:p->rlink);
898 printf("\n! Ambiguous prefix: matches <");
900 print_prefix_name(p);
902 print_prefix_name(r);
921 return add_section_name(par,c,first,last+1,ispref);
929 switch(section_name_cmp(&first,name_len,r)){
933 printf("\n! New name is a prefix of <");
935 print_section_name(r);
938 else if(name_len<prefix_length(r))set_prefix_length(r,name_len);
941 case extension:if(!ispref||first<=last)
942 extend_section_name(r,first,last+1,ispref);
945 printf("\n! New name extends <");
947 print_section_name(r);
951 printf("\n! Section name incompatible with <");
953 print_prefix_name(r);
954 printf(">,\n which abbreviates <");
955 print_section_name(r);
966 #line 1020 "common.w"
968 int section_name_cmp(pfirst,len,r)
975 char*ss,*s= first_chunk(r);
979 ss= (r+1)->byte_start-1;
980 if(*ss==' '&&ss>=r->byte_start)ispref= 1,q= q->link;
981 else ispref= 0,ss++,q= name_dir;
982 switch(c= web_strcmp(first,len,s,ss-s)){
983 case equal:if(q==name_dir)
985 *pfirst= first+(ss-s);
988 else return(q->byte_start==(q+1)->byte_start)?equal:prefix;
990 if(!ispref)return bad_extension;
992 if(q!=name_dir){len-= ss-s;s= q->byte_start;r= q;continue;}
993 *pfirst= first;return extension;
1000 #line 1095 "common.w"
1007 printf(*s=='!'?"\n%s":"%s",s);
1008 if(web_file_open)/*59:*/
1009 #line 1115 "common.w"
1011 {if(changing&&include_depth==change_depth)
1012 printf(". (l. %d of change file)\n",change_line);
1013 else if(include_depth==0)printf(". (l. %d)\n",cur_line);
1014 else printf(". (l. %d of include file %s)\n",cur_line,cur_file_name);
1015 l= (loc>=limit?limit:loc);
1017 for(k= buffer;k<l;k++)
1018 if(*k=='\t')putchar(' ');
1021 for(k= buffer;k<l;k++)putchar(' ');
1023 for(k= l;k<limit;k++)putchar(*k);
1024 if(*limit=='|')putchar('|');
1029 #line 1102 "common.w"
1031 update_terminal;mark_error;
1035 #line 1150 "common.w"
1042 #line 1160 "common.w"
1045 case spotless:if(show_happiness)printf("(No errors were found.)\n");break;
1046 case harmless_message:
1047 printf("(Did you see the warning message above?)\n");break;
1049 printf("(Pardon me, but I think I spotted something wrong.)\n");break;
1050 case fatal_message:printf("(That was a fatal error, my friend.)\n");
1054 #line 1155 "common.w"
1056 if(history> harmless_message)return(1);
1061 #line 1179 "common.w"
1068 history= fatal_message;exit(wrap_up());
1072 #line 1190 "common.w"
1077 printf("\n! Sorry, %s capacity exceeded",t);fatal("","");
1082 #line 1254 "common.w"
1090 boolean found_web= 0,found_change= 0,found_out= 0;
1092 boolean flag_change;
1095 if((**(++argv)=='-'||**argv=='+')&&*(*argv+1))/*74:*/
1096 #line 1344 "common.w"
1099 if(**argv=='-')flag_change= 0;
1100 else flag_change= 1;
1101 for(dot_pos= *argv+1;*dot_pos> '\0';dot_pos++)
1102 flags[*dot_pos]= flag_change;
1106 #line 1266 "common.w"
1109 s= name_pos= *argv;dot_pos= NULL;
1111 if(*s=='.')dot_pos= s++;
1112 else if(*s=='/')dot_pos= NULL,name_pos= ++s;
1115 if(!found_web)/*71:*/
1116 #line 1292 "common.w"
1119 if(s-*argv> max_file_name_length-5)
1121 #line 1364 "common.w"
1122 fatal("! Filename too long\n",*argv);
1126 #line 1295 "common.w"
1129 sprintf(web_file_name,"%s.w",*argv);
1131 strcpy(web_file_name,*argv);
1134 sprintf(alt_web_file_name,"%s.web",*argv);
1135 sprintf(tex_file_name,"%s.tex",name_pos);
1136 sprintf(idx_file_name,"%s.idx",name_pos);
1137 sprintf(scn_file_name,"%s.scn",name_pos);
1138 sprintf(C_file_name,"%s.c",name_pos);
1143 #line 1275 "common.w"
1145 else if(!found_change)/*72:*/
1146 #line 1310 "common.w"
1149 if(strcmp(*argv,"-")==0)found_change= -1;
1151 if(s-*argv> max_file_name_length-4)
1153 #line 1364 "common.w"
1154 fatal("! Filename too long\n",*argv);
1158 #line 1315 "common.w"
1161 sprintf(change_file_name,"%s.ch",*argv);
1162 else strcpy(change_file_name,*argv);
1168 #line 1276 "common.w"
1170 else if(!found_out)/*73:*/
1171 #line 1323 "common.w"
1174 if(s-*argv> max_file_name_length-5)
1176 #line 1364 "common.w"
1177 fatal("! Filename too long\n",*argv);
1181 #line 1326 "common.w"
1184 sprintf(tex_file_name,"%s.tex",*argv);
1185 sprintf(idx_file_name,"%s.idx",*argv);
1186 sprintf(scn_file_name,"%s.scn",*argv);
1187 sprintf(C_file_name,"%s.c",*argv);
1189 strcpy(tex_file_name,*argv);
1190 strcpy(C_file_name,*argv);
1193 sprintf(idx_file_name,"%s.idx",*argv);
1194 sprintf(scn_file_name,"%s.scn",*argv);
1201 #line 1277 "common.w"
1204 #line 1352 "common.w"
1207 if(program==ctangle)
1209 "! Usage: ctangle [options] webfile[.w] [{changefile[.ch]|-} [outfile[.c]]]\n"
1213 "! Usage: cweave [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
1218 #line 1278 "common.w"
1222 if(!found_web)/*75:*/
1223 #line 1352 "common.w"
1226 if(program==ctangle)
1228 "! Usage: ctangle [options] webfile[.w] [{changefile[.ch]|-} [outfile[.c]]]\n"
1232 "! Usage: cweave [options] webfile[.w] [{changefile[.ch]|-} [outfile[.tex]]]\n"
1237 #line 1281 "common.w"
1239 if(found_change<=0)strcpy(change_file_name,"/dev/null");