Commit | Line | Data |
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5a7042c9 | 1 | static char *sccsid = "@(#)colcrt.c 4.2 (Berkeley) %G%"; |
fb76c798 BJ |
2 | #include <stdio.h> |
3 | /* | |
4 | * colcrt - replaces col for crts with new nroff esp. when using tbl. | |
5 | * Bill Joy UCB July 14, 1977 | |
6 | * | |
7 | * This filter uses a screen buffer, 267 half-lines by 132 columns. | |
8 | * It interprets the up and down sequences generated by the new | |
9 | * nroff when used with tbl and by \u \d and \r. | |
10 | * General overstriking doesn't work correctly. | |
11 | * Underlining is split onto multiple lines, etc. | |
12 | * | |
13 | * Option - suppresses all underlining. | |
14 | * Option -2 forces printing of all half lines. | |
15 | */ | |
16 | ||
17 | char page[267][132]; | |
18 | ||
19 | int outline = 1; | |
20 | int outcol; | |
21 | ||
5a7042c9 | 22 | char buf[BUFSIZ]; |
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 | } | |
54 | setbuf(stdout, buf); | |
55 | do { | |
56 | if (argc > 0) { | |
57 | close(0); | |
58 | if ((f=fopen(argv[0], "r") | |
59 | ) < 0) { | |
60 | fflush(stdout); | |
61 | perror(argv[0]); | |
62 | fflush(stdout); | |
63 | exit (1); | |
64 | } | |
65 | argc--; | |
66 | argv++; | |
67 | } | |
68 | for (;;) { | |
69 | c = getc(stdin); | |
70 | if (c == -1) { | |
71 | pflush(outline); | |
72 | fflush(stdout); | |
73 | break; | |
74 | } | |
75 | switch (c) { | |
76 | case '\n': | |
77 | if (outline >= 265) | |
78 | pflush(62); | |
79 | outline += 2; | |
80 | outcol = 0; | |
81 | continue; | |
82 | case '\016': | |
83 | case '\017': | |
84 | continue; | |
85 | case 033: | |
86 | c = getc(stdin); | |
87 | switch (c) { | |
88 | case '9': | |
89 | if (outline >= 266) | |
90 | pflush(62); | |
91 | outline++; | |
92 | continue; | |
93 | case '8': | |
94 | if (outline >= 1) | |
95 | outline--; | |
96 | continue; | |
97 | case '7': | |
98 | outline -= 2; | |
99 | if (outline < 0) | |
100 | outline = 0; | |
101 | continue; | |
102 | default: | |
103 | continue; | |
104 | } | |
105 | case '\b': | |
106 | if (outcol) | |
107 | outcol--; | |
108 | continue; | |
109 | case '\t': | |
110 | outcol += 8; | |
111 | outcol &= ~7; | |
112 | outcol--; | |
113 | c = ' '; | |
114 | default: | |
115 | if (outcol >= 132) { | |
116 | outcol++; | |
117 | continue; | |
118 | } | |
119 | cp = &page[outline][outcol]; | |
120 | outcol++; | |
121 | if (c == '_') { | |
122 | if (suppresul) | |
123 | continue; | |
124 | cp += 132; | |
125 | c = '-'; | |
126 | } | |
127 | if (*cp == 0) { | |
128 | *cp = c; | |
129 | dp = cp - outcol; | |
130 | for (cp--; cp >= dp && *cp == 0; cp--) | |
131 | *cp = ' '; | |
132 | } else | |
133 | if (plus(c, *cp) || plus(*cp, c)) | |
134 | *cp = '+'; | |
135 | else if (*cp == ' ' || *cp == 0) | |
136 | *cp = c; | |
137 | continue; | |
138 | } | |
139 | } | |
140 | } while (argc > 0); | |
141 | fflush(stdout); | |
142 | exit(0); | |
143 | } | |
144 | ||
145 | plus(c, d) | |
146 | char c, d; | |
147 | { | |
148 | ||
149 | return (c == '|' && d == '-' || d == '_'); | |
150 | } | |
151 | ||
152 | int first; | |
153 | ||
154 | pflush(ol) | |
155 | int ol; | |
156 | { | |
157 | register int i, j; | |
158 | register char *cp; | |
159 | char lastomit; | |
160 | int l; | |
161 | ||
162 | l = ol; | |
163 | lastomit = 0; | |
164 | if (l > 266) | |
165 | l = 266; | |
166 | else | |
167 | l |= 1; | |
168 | for (i = first | 1; i < l; i++) { | |
169 | move(i, i - 1); | |
170 | move(i, i + 1); | |
171 | } | |
172 | for (i = first; i < l; i++) { | |
173 | cp = page[i]; | |
174 | if (printall == 0 && lastomit == 0 && *cp == 0) { | |
175 | lastomit = 1; | |
176 | continue; | |
177 | } | |
178 | lastomit = 0; | |
179 | printf("%s\n", cp); | |
180 | } | |
181 | copy(page, page[ol], (267 - ol) * 132); | |
182 | clear(page[267- ol], ol * 132); | |
183 | outline -= ol; | |
184 | outcol = 0; | |
185 | first = 1; | |
186 | } | |
187 | move(l, m) | |
188 | int l, m; | |
189 | { | |
190 | register char *cp, *dp; | |
191 | ||
192 | for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { | |
193 | switch (*cp) { | |
194 | case '|': | |
195 | if (*dp != ' ' && *dp != '|' && *dp != 0) | |
196 | return; | |
197 | break; | |
198 | case ' ': | |
199 | break; | |
200 | default: | |
201 | return; | |
202 | } | |
203 | } | |
204 | if (*cp == 0) { | |
205 | for (cp = page[l], dp = page[m]; *cp; cp++, dp++) | |
206 | if (*cp == '|') | |
207 | *dp = '|'; | |
208 | else if (*dp == 0) | |
209 | *dp = ' '; | |
210 | page[l][0] = 0; | |
211 | } | |
212 | } | |
213 | ||
214 | copy(to, from, i) | |
215 | register char *to, *from; | |
216 | register int i; | |
217 | { | |
218 | ||
219 | if (i > 0) | |
220 | do | |
221 | *to++ = *from++; | |
222 | while (--i); | |
223 | } | |
224 | ||
225 | clear(at, cnt) | |
226 | register char *at; | |
227 | register int cnt; | |
228 | { | |
229 | ||
230 | if (cnt > 0) | |
231 | do | |
232 | *at++ = 0; | |
233 | while (--cnt); | |
234 | } |