txt2page.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define PAGESIZE    2048
#define PAGECOUNT    720
#define LINESIZE      80
#define LINECOUNT     25

char page[PAGESIZE];

void remove_trailing_newline(char *);

/*
 * txt2page - convert a text file into a BefOS page.
 */
int
main(int argc, char **argv)
{
    int i = 1;
    char line[2048];

    bzero(page, PAGESIZE);
    for (i = 0; i < LINECOUNT; i++) {
        bzero(line, LINESIZE);
        if (fgets(line, 2048, stdin) == NULL)
            break;
        remove_trailing_newline(line);
        strncpy(&page[i * LINESIZE], line, LINESIZE);
    }

    /* TODO: MSDOS: set stdout to binary mode */
    fwrite(page, PAGESIZE, 1, stdout);
    return(0);
}

void
remove_trailing_newline(char *s)
{
    int i;

    i = strlen(s) - 1;
    while (s[i] == '\n' && i >= 0)
        s[i--] = 0;
}