projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 32a94702 | 1 | static char *sccsid = "@(#)colcrt.c 4.4 (Berkeley) %G%"; |
| c1759b83 | 2 | |
| fb76c798 BJ |
3 | #include <stdio.h> |
| 4 | /* | |
| 5 | * colcrt - replaces col for crts with new nroff esp. when using tbl. | |
| 6 | * Bill Joy UCB July 14, 1977 | |
| 7 | * | |
| 8 | * This filter uses a screen buffer, 267 half-lines by 132 columns. | |
| 9 | * It interprets the up and down sequences generated by the new | |
| 10 | * nroff when used with tbl and by \u \d and \r. | |
| 11 | * General overstriking doesn't work correctly. | |
| 12 | * Underlining is split onto multiple lines, etc. | |
| 13 | * | |
| 14 | * Option - suppresses all underlining. | |
| 15 | * Option -2 forces printing of all half lines. | |
| 16 | */ | |
| 17 | ||
| 18 | char page[267][132]; | |
| 19 | ||
| 20 | int outline = 1; | |
| 21 | int outcol; | |
| 22 | ||
| fb76c798 BJ |
23 | char suppresul; |
| 24 | char printall; | |
| 25 | ||
| 26 | char *progname; | |
| 27 | FILE *f; | |
| 28 | ||
| 29 | main(argc, argv) | |
| 30 | int argc; | |
| 31 | char *argv[]; | |
| 32 | { | |
| 33 | register c; | |
| 34 | register char *cp, *dp; | |
| 35 | ||
| 36 | argc--; | |
| 37 | progname = *argv++; | |
| 38 | while (argc > 0 && argv[0][0] == '-') { | |
| 39 | switch (argv[0][1]) { | |
| 40 | case 0: | |
| 41 | suppresul = 1; | |
| 42 | break; | |
| 43 | case '2': | |
| 44 | printall = 1; | |
| 45 | break; | |
| 46 | default: | |
| 47 | printf("usage: %s [ - ] [ -2 ] [ file ... ]\n", progname); | |
| 48 | fflush(stdout); | |
| 49 | exit(1); | |
| 50 | } | |
| 51 | argc--; | |
| 52 | argv++; | |
| 53 | } | |
| fb76c798 BJ |
54 | do { |
| 55 | if (argc > 0) { | |
| 56 | close(0); | |
| 57 | if ((f=fopen(argv[0], "r") | |
| 58 | ) < 0) { | |
| 59 | fflush(stdout); | |
| 60 | perror(argv[0]); | |
| fb76c798 BJ |
61 | exit (1); |
| 62 | } | |
| 63 | argc--; | |
| 64 | argv++; | |
| 65 | } | |
| 66 | for (;;) { | |
| 67 | c = getc(stdin); | |
| 68 | if (c == -1) { | |
| 69 | pflush(outline); | |
| 70 | fflush(stdout); | |
| 71 | break; | |
| 72 | } | |
| 73 | switch (c) { | |
| 74 | case '\n': | |
| 75 | if (outline >= 265) | |
| 76 | pflush(62); | |
| 77 | outline += 2; | |
| 78 | outcol = 0; | |
| 79 | continue; | |
| 80 | case '\016': | |
| 81 | case '\017': | |
| 82 | continue; | |
| 83 | case 033: | |
| 84 | c = getc(stdin); | |
| 85 | switch (c) { | |
| 86 | case '9': | |
| 87 | if (outline >= 266) | |
| 88 | pflush(62); | |
| 89 | outline++; | |
| 90 | continue; | |
| 91 | case '8': | |
| 92 | if (outline >= 1) | |
| 93 | outline--; | |
| 94 | continue; | |
| 95 | case '7': | |
| 96 | outline -= 2; | |
| 97 | if (outline < 0) | |
| 98 | outline = 0; | |
| 99 | continue; | |
| 100 | default: | |
| 101 | continue; | |
| 102 | } | |
| 103 | case '\b': | |
| 104 | if (outcol) | |
| 105 | outcol--; | |
| 106 | continue; | |
| 107 | case '\t': | |
| 108 | outcol += 8; | |
| 109 | outcol &= ~7; | |
| 110 | outcol--; | |
| 111 | c = ' '; | |
| 112 | default: | |
| 113 | if (outcol >= 132) { | |
| 114 | outcol++; | |
| 115 | continue; | |
| 116 | } | |
| 117 | cp = &page[outline][outcol]; | |
| 118 | outcol++; | |
| 119 | if (c == '_') { | |
| 120 | if (suppresul) | |
| 121 | continue; | |
| 122 | cp += 132; | |
| 123 | c = '-'; | |
| 124 | } | |
| 125 | if (*cp == 0) { | |
| 126 | *cp = c; | |
| 127 | dp = cp - outcol; | |
| 128 | for (cp--; cp >= dp && *cp == 0; cp--) | |
| 129 | *cp = ' '; | |
| 130 | } else | |
| 131 | if (plus(c, *cp) || plus(*cp, c)) | |
| 132 | *cp = '+'; | |
| 133 | else if (*cp == ' ' || *cp == 0) | |
| 134 | *cp = c; | |
| 135 | continue; | |
| 136 | } | |
| 137 | } | |
| 138 | } while (argc > 0); | |
| 139 | fflush(stdout); | |
| 140 | exit(0); | |
| 141 | } | |
| 142 | ||
| 143 | plus(c, d) | |
| 144 | char c, d; | |
| 145 | { | |
| 146 | ||
| 147 | return (c == '|' && d == '-' || d == '_'); | |
| 148 | } | |
| 149 | ||
| 150 | int first; | |
| 151 | ||
| 152 | pflush(ol) | |
| 153 | int ol; | |
| 154 | { | |
| 155 | register int i, j; | |
| 156 | register char *cp; | |
| 157 | char lastomit; | |
| 158 | int l; | |
| 159 | ||
| 160 | l = ol; | |
| 161 | lastomit = 0; | |
| 162 | if (l > 266) | |
| 163 | l = 266; | |
| 164 | else | |
| 165 | l |= 1; | |
| 166 | for (i = first | 1; i < l; i++) { | |
| 167 | move(i, i - 1); | |
| 168 | move(i, i + 1); | |
| 169 | } | |
| 170 | for (i = first; i < l; i++) { | |
| 171 | cp = page[i]; | |
| 172 | if (printall == 0 && lastomit == 0 && *cp == 0) { | |
| 173 | lastomit = 1; | |
| 174 | continue; | |
| 175 | } | |
| 176 | lastomit = 0; | |
| 177 | printf("%s\n", cp); | |
| 178 | } | |
| c1759b83 SL |
179 | bcopy(page[ol], page, (267 - ol) * 132); |
| 180 | bzero(page[267- ol], ol * 132); | |
| fb76c798 BJ |
181 | outline -= ol; |
| 182 | outcol = 0; | |
| 183 | first = 1; | |
| 184 | } | |
| c1759b83 | 185 | |
| fb76c798 BJ |
186 | move(l, m) |
| 187 | int l, m; | |
| 188 | { | |
| 189 | register char *cp, *dp; | |
| 190 | ||
| 191 | for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { | |
| 192 | switch (*cp) { | |
| 193 | case '|': | |
| 194 | if (*dp != ' ' && *dp != '|' && *dp != 0) | |
| 195 | return; | |
| 196 | break; | |
| 197 | case ' ': | |
| 198 | break; | |
| 199 | default: | |
| 200 | return; | |
| 201 | } | |
| 202 | } | |
| 203 | if (*cp == 0) { | |
| 204 | for (cp = page[l], dp = page[m]; *cp; cp++, dp++) | |
| 205 | if (*cp == '|') | |
| 206 | *dp = '|'; | |
| 207 | else if (*dp == 0) | |
| 208 | *dp = ' '; | |
| 209 | page[l][0] = 0; | |
| 210 | } | |
| 211 | } |