| 1 | #include <stdio.h> |
| 2 | /* |
| 3 | * soelim - a filter to process n/troff input eliminating .so's |
| 4 | * |
| 5 | * Author: Bill Joy UCB July 8, 1977 |
| 6 | * |
| 7 | * This program eliminates .so's from a n/troff input stream. |
| 8 | * It can be used to prepare safe input for submission to the |
| 9 | * phototypesetter since the software supporting the operator |
| 10 | * doesn't let him do chdir. |
| 11 | * |
| 12 | * This is a kludge and the operator should be given the |
| 13 | * ability to do chdir. |
| 14 | * |
| 15 | * This program is more generally useful, it turns out, because |
| 16 | * the program tbl doesn't understand ".so" directives. |
| 17 | */ |
| 18 | |
| 19 | main(argc, argv) |
| 20 | int argc; |
| 21 | char *argv[]; |
| 22 | { |
| 23 | |
| 24 | argc--; |
| 25 | argv++; |
| 26 | if (argc == 0) { |
| 27 | fprintf(stderr, "Usage: %s file [ file ... ]\n", argv[-1]); |
| 28 | exit(1); |
| 29 | } |
| 30 | do { |
| 31 | process(argv[0]); |
| 32 | argv++; |
| 33 | argc--; |
| 34 | } while (argc > 0); |
| 35 | exit(0); |
| 36 | } |
| 37 | |
| 38 | process(file) |
| 39 | char *file; |
| 40 | { |
| 41 | register char *cp; |
| 42 | register int c; |
| 43 | char fname[BUFSIZ]; |
| 44 | FILE *soee; |
| 45 | |
| 46 | soee = fopen(file, "r"); |
| 47 | if (soee == NULL) { |
| 48 | perror(file); |
| 49 | return; |
| 50 | } |
| 51 | for (;;) { |
| 52 | c = getc(soee); |
| 53 | if (c < 0) |
| 54 | break; |
| 55 | if (c != '.') |
| 56 | goto simple; |
| 57 | c = getc(soee); |
| 58 | if (c != 's') { |
| 59 | putchar('.'); |
| 60 | goto simple; |
| 61 | } |
| 62 | c = getc(soee); |
| 63 | if (c != 'o') { |
| 64 | printf(".s"); |
| 65 | goto simple; |
| 66 | } |
| 67 | do |
| 68 | c = getc(soee); |
| 69 | while (c == ' ' || c == '\t'); |
| 70 | cp = fname; |
| 71 | for (;;) { |
| 72 | switch (c) { |
| 73 | |
| 74 | case ' ': |
| 75 | case '\t': |
| 76 | case '\n': |
| 77 | case EOF: |
| 78 | goto donename; |
| 79 | |
| 80 | default: |
| 81 | *cp++ = c; |
| 82 | c = getc(soee); |
| 83 | continue; |
| 84 | } |
| 85 | } |
| 86 | donename: |
| 87 | if (cp == fname) { |
| 88 | printf(".so"); |
| 89 | goto simple; |
| 90 | } |
| 91 | *cp++ = 0; |
| 92 | process(fname); |
| 93 | continue; |
| 94 | simple: |
| 95 | if (c == EOF) |
| 96 | break; |
| 97 | putchar(c); |
| 98 | } |
| 99 | fclose(soee); |
| 100 | } |