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- #include <stdio.h>
- #include <string.h>
- #include <ctype.h>
- #include <bios.h>
- #include <process.h>
- #include <io.h>
-
- #define LENGTH 80
-
- FILE *infile;
- FILE *outfile;
-
- void main(int argc, char *argv[])
- {
-
- register int i, count = 0;
- int flag = 1;
-
- char c;
- char tmp_file[LENGTH], *temptr;
- char src_file[LENGTH], *srcptr;
- char bak_file[LENGTH], *bakptr;
-
- if(argc != 2) {
- printf("\nUsage: prep <argv[1]>\n");
- exit(0);
- }
- strcpy(src_file, argv[1]); /* copy the filename */
- temptr = tmp_file; /* point to the files */
- srcptr = src_file;
- bakptr = bak_file;
- while(*srcptr) { /* copy the name til a . appears */
- if(*srcptr == '.') break; /* or we run out of stuff */
- *bakptr++ = *srcptr;
- *temptr++ = *srcptr++;
- }
- strcpy(temptr, ".$$$"); /* fill in the file types */
- strcpy(bakptr, ".BAK");
- if((infile = fopen(src_file, "r")) == NULL) {
- printf("\nCannot open file: %s\n", src_file);
- exit(0);
- }
- if((outfile = fopen(tmp_file, "w")) == NULL) {
- printf("\nCannot open file: %s\n", tmp_file);
- exit(0);
- }
- while(flag) { /* copy characters until End-Of-File */
- c = fgetc(infile);
- if(c == EOF) flag = 0;
- if(c != '\t') {
- fputc(c, outfile); /* expand the tab */
- count++;
- }
- else {
- i = 4 - (count % 4);
- while(i--) {
- fputc(' ', outfile);
- count++;
- }
- }
- if(c == '\n') count = 0;
- }
- fcloseall();
- unlink(bak_file); /* delete any previous .BAK files */
- rename(src_file, bak_file); /* rename the files */
- rename(tmp_file, src_file);
-
- }