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fcd2465c | 1 | /* |
297a0a40 KB |
2 | * Copyright (c) 1980 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
fcd2465c DF |
16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
297a0a40 | 20 | "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ |
fcd2465c | 21 | All rights reserved.\n"; |
297a0a40 | 22 | #endif /* not lint */ |
fcd2465c DF |
23 | |
24 | #ifndef lint | |
297a0a40 KB |
25 | static char sccsid[] = "@(#)colcrt.c 5.3 (Berkeley) %G%"; |
26 | #endif /* not lint */ | |
c1759b83 | 27 | |
fb76c798 BJ |
28 | #include <stdio.h> |
29 | /* | |
30 | * colcrt - replaces col for crts with new nroff esp. when using tbl. | |
31 | * Bill Joy UCB July 14, 1977 | |
32 | * | |
33 | * This filter uses a screen buffer, 267 half-lines by 132 columns. | |
34 | * It interprets the up and down sequences generated by the new | |
35 | * nroff when used with tbl and by \u \d and \r. | |
36 | * General overstriking doesn't work correctly. | |
37 | * Underlining is split onto multiple lines, etc. | |
38 | * | |
39 | * Option - suppresses all underlining. | |
40 | * Option -2 forces printing of all half lines. | |
41 | */ | |
42 | ||
43 | char page[267][132]; | |
44 | ||
45 | int outline = 1; | |
46 | int outcol; | |
47 | ||
fb76c798 BJ |
48 | char suppresul; |
49 | char printall; | |
50 | ||
51 | char *progname; | |
52 | FILE *f; | |
53 | ||
54 | main(argc, argv) | |
55 | int argc; | |
56 | char *argv[]; | |
57 | { | |
58 | register c; | |
59 | register char *cp, *dp; | |
60 | ||
61 | argc--; | |
62 | progname = *argv++; | |
63 | while (argc > 0 && argv[0][0] == '-') { | |
64 | switch (argv[0][1]) { | |
65 | case 0: | |
66 | suppresul = 1; | |
67 | break; | |
68 | case '2': | |
69 | printall = 1; | |
70 | break; | |
71 | default: | |
72 | printf("usage: %s [ - ] [ -2 ] [ file ... ]\n", progname); | |
73 | fflush(stdout); | |
74 | exit(1); | |
75 | } | |
76 | argc--; | |
77 | argv++; | |
78 | } | |
fb76c798 BJ |
79 | do { |
80 | if (argc > 0) { | |
81 | close(0); | |
bdbc9c90 | 82 | if (!(f = fopen(argv[0], "r"))) { |
fb76c798 BJ |
83 | fflush(stdout); |
84 | perror(argv[0]); | |
fb76c798 BJ |
85 | exit (1); |
86 | } | |
87 | argc--; | |
88 | argv++; | |
89 | } | |
90 | for (;;) { | |
91 | c = getc(stdin); | |
92 | if (c == -1) { | |
93 | pflush(outline); | |
94 | fflush(stdout); | |
95 | break; | |
96 | } | |
97 | switch (c) { | |
98 | case '\n': | |
99 | if (outline >= 265) | |
100 | pflush(62); | |
101 | outline += 2; | |
102 | outcol = 0; | |
103 | continue; | |
104 | case '\016': | |
105 | case '\017': | |
106 | continue; | |
107 | case 033: | |
108 | c = getc(stdin); | |
109 | switch (c) { | |
110 | case '9': | |
111 | if (outline >= 266) | |
112 | pflush(62); | |
113 | outline++; | |
114 | continue; | |
115 | case '8': | |
116 | if (outline >= 1) | |
117 | outline--; | |
118 | continue; | |
119 | case '7': | |
120 | outline -= 2; | |
121 | if (outline < 0) | |
122 | outline = 0; | |
123 | continue; | |
124 | default: | |
125 | continue; | |
126 | } | |
127 | case '\b': | |
128 | if (outcol) | |
129 | outcol--; | |
130 | continue; | |
131 | case '\t': | |
132 | outcol += 8; | |
133 | outcol &= ~7; | |
134 | outcol--; | |
135 | c = ' '; | |
136 | default: | |
137 | if (outcol >= 132) { | |
138 | outcol++; | |
139 | continue; | |
140 | } | |
141 | cp = &page[outline][outcol]; | |
142 | outcol++; | |
143 | if (c == '_') { | |
144 | if (suppresul) | |
145 | continue; | |
146 | cp += 132; | |
147 | c = '-'; | |
148 | } | |
149 | if (*cp == 0) { | |
150 | *cp = c; | |
151 | dp = cp - outcol; | |
152 | for (cp--; cp >= dp && *cp == 0; cp--) | |
153 | *cp = ' '; | |
154 | } else | |
155 | if (plus(c, *cp) || plus(*cp, c)) | |
156 | *cp = '+'; | |
157 | else if (*cp == ' ' || *cp == 0) | |
158 | *cp = c; | |
159 | continue; | |
160 | } | |
161 | } | |
162 | } while (argc > 0); | |
163 | fflush(stdout); | |
164 | exit(0); | |
165 | } | |
166 | ||
167 | plus(c, d) | |
168 | char c, d; | |
169 | { | |
170 | ||
171 | return (c == '|' && d == '-' || d == '_'); | |
172 | } | |
173 | ||
174 | int first; | |
175 | ||
176 | pflush(ol) | |
177 | int ol; | |
178 | { | |
179 | register int i, j; | |
180 | register char *cp; | |
181 | char lastomit; | |
182 | int l; | |
183 | ||
184 | l = ol; | |
185 | lastomit = 0; | |
186 | if (l > 266) | |
187 | l = 266; | |
188 | else | |
189 | l |= 1; | |
190 | for (i = first | 1; i < l; i++) { | |
191 | move(i, i - 1); | |
192 | move(i, i + 1); | |
193 | } | |
194 | for (i = first; i < l; i++) { | |
195 | cp = page[i]; | |
196 | if (printall == 0 && lastomit == 0 && *cp == 0) { | |
197 | lastomit = 1; | |
198 | continue; | |
199 | } | |
200 | lastomit = 0; | |
201 | printf("%s\n", cp); | |
202 | } | |
c1759b83 SL |
203 | bcopy(page[ol], page, (267 - ol) * 132); |
204 | bzero(page[267- ol], ol * 132); | |
fb76c798 BJ |
205 | outline -= ol; |
206 | outcol = 0; | |
207 | first = 1; | |
208 | } | |
c1759b83 | 209 | |
fb76c798 BJ |
210 | move(l, m) |
211 | int l, m; | |
212 | { | |
213 | register char *cp, *dp; | |
214 | ||
215 | for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { | |
216 | switch (*cp) { | |
217 | case '|': | |
218 | if (*dp != ' ' && *dp != '|' && *dp != 0) | |
219 | return; | |
220 | break; | |
221 | case ' ': | |
222 | break; | |
223 | default: | |
224 | return; | |
225 | } | |
226 | } | |
227 | if (*cp == 0) { | |
228 | for (cp = page[l], dp = page[m]; *cp; cp++, dp++) | |
229 | if (*cp == '|') | |
230 | *dp = '|'; | |
231 | else if (*dp == 0) | |
232 | *dp = ' '; | |
233 | page[l][0] = 0; | |
234 | } | |
235 | } |