Subversion Repositories planix.SVN

/*
 * Things used to handle special requests (eg. manual feed) globally or on a per
 * page basis. Requests are passed through to the translator using the -R option.
 * The argument to -R can be "request", "request:page", or "request:page:file".
 * If page is omitted (as in the first form) or set to 0 request will be applied
 * to the global environment. In all other cases it applies only to the selected
 * page. If a file is given, page must be supplied, and the lookup is in that file
 * rather than *requestfile.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gen.h"                        /* general purpose definitions */
#include "ext.h"
#include "request.h"                    /* a few special definitions */
#include "path.h"                       /* for the default request file */

Request request[MAXREQUEST];            /* next page or global request */
int     nextreq = 0;                    /* goes in request[nextreq] */
char    *requestfile = REQUESTFILE;     /* default lookup file */

void    dumprequest(char *, char *, FILE *);
void    writerequest(int, FILE *);

/*
 * Save the request until we get to appropriate page - don't even bother with
 * the lookup right now. Format of *want string is "request", "request:page", or
 * "request:page:file", and we assume we can change the string here as needed.
 * If page is omitted or given as 0 the request will be done globally. If *want
 * includes a file, request and page must also be given, and in that case *file
 * will be used for the lookup.
 */
void
saverequest(want)
    char        *want;                  /* grab code for this stuff */
{
    char        *page;                  /* and save it for this page */

    if ( nextreq < MAXREQUEST )  {
        request[nextreq].want = strtok(want, ": ");
        if ( (page = strtok(NULL, ": ")) == NULL )
            request[nextreq].page = 0;
        else request[nextreq].page = atoi(page);
        if ( (request[nextreq].file = strtok(NULL, ": ")) == NULL )
            request[nextreq].file = requestfile;
        nextreq++;
    } else error(NON_FATAL, "too many requests - ignoring %s", want);
}

/*
 * Writes out all the requests that have been saved for page. Page 0 refers to
 * the global environment and is done during initial setup.
 */
void
writerequest(page, fp_out)
    int         page;                   /* write everything for this page */
    FILE        *fp_out;                /* to this file */
{
    int         i;                      /* loop index */

    for ( i = 0; i < nextreq; i++ )
        if ( request[i].page == page )
            dumprequest(request[i].want, request[i].file, fp_out);
}

/*
 * Looks for *want in the request file and if it's found the associated value
 * is copied to the output file. Keywords (ie. the *want strings) begin an @ in
 * the first column of file, while the values (ie. the stuff that's copied to
 * the output file) starts on the next line and extends to the next keyword or
 * to the end of file.
 */
void
dumprequest(want, file, fp_out)
    char        *want;                  /* look for this string */
    char        *file;                  /* in this file */
    FILE        *fp_out;                /* and write the value out here */
{
    char        buf[100];               /* line buffer for reading *file */
    FILE        *fp_in;

    if ( (fp_in = fopen(file, "r")) != NULL )  {
        while ( fgets(buf, sizeof(buf), fp_in) != NULL )
            if ( buf[0] == '@' && strncmp(want, &buf[1], strlen(want)) == 0 )
                while ( fgets(buf, sizeof(buf), fp_in) != NULL )
                    if ( buf[0] == '#' || buf[0] == '%' )
                        continue;
                    else if ( buf[0] != '@' )
                        fprintf(fp_out, "%s", buf);
                    else break;
        fclose(fp_in);
    }
}