1 /* 2 * Things used to handle special requests (eg. manual feed) globally or on a per 3 * page basis. Requests are passed through to the translator using the -R option. 4 * The argument to -R can be "request", "request:page", or "request:page:file". 5 * If page is omitted (as in the first form) or set to 0 request will be applied 6 * to the global environment. In all other cases it applies only to the selected 7 * page. If a file is given, page must be supplied, and the lookup is in that file 8 * rather than *requestfile. 9 */ 10 11 #include <stdio.h> 12 #include <stdlib.h> 13 #include <string.h> 14 #include "gen.h" /* general purpose definitions */ 15 #include "ext.h" 16 #include "request.h" /* a few special definitions */ 17 #include "path.h" /* for the default request file */ 18 19 Request request[MAXREQUEST]; /* next page or global request */ 20 int nextreq = 0; /* goes in request[nextreq] */ 21 char *requestfile = REQUESTFILE; /* default lookup file */ 22 23 void dumprequest(char *, char *, FILE *); 24 void writerequest(int, FILE *); 25 26 /* 27 * Save the request until we get to appropriate page - don't even bother with 28 * the lookup right now. Format of *want string is "request", "request:page", or 29 * "request:page:file", and we assume we can change the string here as needed. 30 * If page is omitted or given as 0 the request will be done globally. If *want 31 * includes a file, request and page must also be given, and in that case *file 32 * will be used for the lookup. 33 */ 34 void 35 saverequest(want) 36 char *want; /* grab code for this stuff */ 37 { 38 char *page; /* and save it for this page */ 39 40 if ( nextreq < MAXREQUEST ) { 41 request[nextreq].want = strtok(want, ": "); 42 if ( (page = strtok(NULL, ": ")) == NULL ) 43 request[nextreq].page = 0; 44 else request[nextreq].page = atoi(page); 45 if ( (request[nextreq].file = strtok(NULL, ": ")) == NULL ) 46 request[nextreq].file = requestfile; 47 nextreq++; 48 } else error(NON_FATAL, "too many requests - ignoring %s", want); 49 } 50 51 /* 52 * Writes out all the requests that have been saved for page. Page 0 refers to 53 * the global environment and is done during initial setup. 54 */ 55 void 56 writerequest(page, fp_out) 57 int page; /* write everything for this page */ 58 FILE *fp_out; /* to this file */ 59 { 60 int i; /* loop index */ 61 62 for ( i = 0; i < nextreq; i++ ) 63 if ( request[i].page == page ) 64 dumprequest(request[i].want, request[i].file, fp_out); 65 } 66 67 /* 68 * Looks for *want in the request file and if it's found the associated value 69 * is copied to the output file. Keywords (ie. the *want strings) begin an @ in 70 * the first column of file, while the values (ie. the stuff that's copied to 71 * the output file) starts on the next line and extends to the next keyword or 72 * to the end of file. 73 */ 74 void 75 dumprequest(want, file, fp_out) 76 char *want; /* look for this string */ 77 char *file; /* in this file */ 78 FILE *fp_out; /* and write the value out here */ 79 { 80 char buf[100]; /* line buffer for reading *file */ 81 FILE *fp_in; 82 83 if ( (fp_in = fopen(file, "r")) != NULL ) { 84 while ( fgets(buf, sizeof(buf), fp_in) != NULL ) 85 if ( buf[0] == '@' && strncmp(want, &buf[1], strlen(want)) == 0 ) 86 while ( fgets(buf, sizeof(buf), fp_in) != NULL ) 87 if ( buf[0] == '#' || buf[0] == '%' ) 88 continue; 89 else if ( buf[0] != '@' ) 90 fprintf(fp_out, "%s", buf); 91 else break; 92 fclose(fp_in); 93 } 94 } 95