| 1 | static char *sccsid = "@(#)num.c 4.1 (Berkeley) %G%"; |
| 2 | #include "stdio.h" |
| 3 | #define formfeed 0xc |
| 4 | |
| 5 | /* |
| 6 | * number - a cat like program which prints a file with line |
| 7 | * numbers. Printing of numbers is suppressed on blank |
| 8 | * lines. |
| 9 | * |
| 10 | * Original Version by William Joy, June 1977 |
| 11 | * Updated October 1979 by M. Kirk McKusick |
| 12 | */ |
| 13 | main(ac, av) |
| 14 | int ac; |
| 15 | char *av[]; |
| 16 | { |
| 17 | register int argc = ac; |
| 18 | register char **argv = av; |
| 19 | register int lino; |
| 20 | register char *lineptr; |
| 21 | register FILE *STDOUT = stdout; |
| 22 | register FILE *STDIN = stdin; |
| 23 | char line[512]; |
| 24 | extern char _sibuf[], _sobuf[]; |
| 25 | |
| 26 | argv++; |
| 27 | argc--; |
| 28 | lino = 1; |
| 29 | setbuf(STDIN,_sibuf); |
| 30 | setbuf(STDOUT,_sobuf); |
| 31 | do |
| 32 | { |
| 33 | if (argc) |
| 34 | if (freopen(*argv++, "r", STDIN) == NULL) |
| 35 | { |
| 36 | perror(*--argv); |
| 37 | exit(1); |
| 38 | } |
| 39 | for(;;) |
| 40 | { |
| 41 | lineptr = line; |
| 42 | *lineptr = 0; |
| 43 | fscanf(STDIN,"%[^\n]",lineptr); |
| 44 | if (feof(STDIN)) |
| 45 | break; |
| 46 | if (*lineptr == formfeed) |
| 47 | putc(*lineptr++,STDOUT); |
| 48 | if (!*lineptr) |
| 49 | putc('\n',STDOUT); |
| 50 | else |
| 51 | fprintf(STDOUT,"%6d %s\n",lino,lineptr); |
| 52 | lino++; |
| 53 | getc(STDIN); |
| 54 | } |
| 55 | } |
| 56 | while (--argc > 0); |
| 57 | exit(); |
| 58 | } |