Commit | Line | Data |
---|---|---|
6fb00d97 BJ |
1 | /* |
2 | * colcrt - replaces col for crts with new nroff esp. when using tbl. | |
3 | * Bill Joy UCB July 14, 1977 | |
4 | * | |
5 | * This filter uses a screen buffer, 267 half-lines by 132 columns. | |
6 | * It interprets the up and down sequences generated by the new | |
7 | * nroff when used with tbl and by \u \d and \r. | |
8 | * General overstriking doesn't work correctly. | |
9 | * Underlining is split onto multiple lines, etc. | |
10 | * | |
11 | * Option - suppresses all underlining. | |
12 | * Option -2 forces printing of all half lines. | |
13 | */ | |
14 | ||
15 | char page[267][132]; | |
16 | ||
17 | int outline 1; | |
18 | int outcol; | |
19 | ||
20 | char suppresul; | |
21 | char printall; | |
22 | extern fout; | |
23 | int ibuf[259]; | |
24 | ||
25 | char *progname; | |
26 | ||
27 | main(argc, argv) | |
28 | int argc; | |
29 | char *argv[]; | |
30 | { | |
31 | register c; | |
32 | register char *cp, *dp; | |
33 | ||
34 | argc--; | |
35 | progname = *argv++; | |
36 | while (argc > 0 && argv[0][0] == '-') { | |
37 | switch (argv[0][1]) { | |
38 | case 0: | |
39 | suppresul = 1; | |
40 | break; | |
41 | case '2': | |
42 | printall = 1; | |
43 | break; | |
44 | default: | |
45 | printf("usage: %s [ - ] [ -2 ] [ file ... ]\n", progname); | |
46 | flush(); | |
47 | exit(1); | |
48 | } | |
49 | argc--; | |
50 | argv++; | |
51 | } | |
52 | fout = dup(1); | |
53 | do { | |
54 | if (argc > 0) { | |
55 | close(0); | |
56 | if (fopen(argv[0], ibuf) < 0) { | |
57 | flush(); | |
58 | perror(argv[0]); | |
59 | flush(); | |
60 | exit (1); | |
61 | } | |
62 | argc--; | |
63 | argv++; | |
64 | } | |
65 | for (;;) { | |
66 | c = getc(ibuf); | |
67 | if (c == -1) { | |
68 | pflush(outline); | |
69 | flush(); | |
70 | break; | |
71 | } | |
72 | switch (c) { | |
73 | case '\n': | |
74 | if (outline >= 265) | |
75 | pflush(62); | |
76 | outline =+ 2; | |
77 | outcol = 0; | |
78 | continue; | |
79 | case '\016': | |
80 | case '\017': | |
81 | continue; | |
82 | case 033: | |
83 | c = getc(ibuf); | |
84 | switch (c) { | |
85 | case '9': | |
86 | if (outline >= 266) | |
87 | pflush(62); | |
88 | outline++; | |
89 | continue; | |
90 | case '8': | |
91 | if (outline >= 1) | |
92 | outline--; | |
93 | continue; | |
94 | case '7': | |
95 | outline =- 2; | |
96 | if (outline < 0) | |
97 | outline = 0; | |
98 | continue; | |
99 | default: | |
100 | continue; | |
101 | } | |
102 | case '\b': | |
103 | if (outcol) | |
104 | outcol--; | |
105 | continue; | |
106 | case '\t': | |
107 | outcol =+ 8; | |
108 | outcol =& ~7; | |
109 | outcol--; | |
110 | c = ' '; | |
111 | default: | |
112 | if (outcol >= 132) { | |
113 | outcol++; | |
114 | continue; | |
115 | } | |
116 | cp = &page[outline][outcol]; | |
117 | outcol++; | |
118 | if (c == '_') { | |
119 | if (suppresul) | |
120 | continue; | |
121 | cp =+ 132; | |
122 | c = '-'; | |
123 | } | |
124 | if (*cp == 0) { | |
125 | *cp = c; | |
126 | dp = cp - outcol; | |
127 | for (cp--; cp >= dp && *cp == 0; cp--) | |
128 | *cp = ' '; | |
129 | } else | |
130 | if (plus(c, *cp) || plus(*cp, c)) | |
131 | *cp = '+'; | |
132 | else if (*cp == ' ' || *cp == 0) | |
133 | *cp = c; | |
134 | continue; | |
135 | } | |
136 | } | |
137 | } while (argc > 0); | |
138 | } | |
139 | ||
140 | plus(c, d) | |
141 | char c, d; | |
142 | { | |
143 | ||
144 | return (c == '|' && d == '-' || d == '_'); | |
145 | } | |
146 | ||
147 | int first; | |
148 | ||
149 | pflush(ol) | |
150 | int ol; | |
151 | { | |
152 | register int i, j; | |
153 | register char *cp; | |
154 | char lastomit; | |
155 | int l; | |
156 | ||
157 | l = ol; | |
158 | lastomit = 0; | |
159 | if (l > 266) | |
160 | l = 266; | |
161 | else | |
162 | l =| 1; | |
163 | for (i = first | 1; i < l; i++) { | |
164 | move(i, i - 1); | |
165 | move(i, i + 1); | |
166 | } | |
167 | for (i = first; i < l; i++) { | |
168 | cp = &page[i]; | |
169 | if (printall == 0 && lastomit == 0 && *cp == 0) { | |
170 | lastomit = 1; | |
171 | continue; | |
172 | } | |
173 | lastomit = 0; | |
174 | printf("%s\n", cp); | |
175 | } | |
176 | copy(page, page[ol], (267 - ol) * 132); | |
177 | clear(page[267- ol], ol * 132); | |
178 | outline =- ol; | |
179 | outcol = 0; | |
180 | first = 1; | |
181 | } | |
182 | move(l, m) | |
183 | int l, m; | |
184 | { | |
185 | register char *cp, *dp; | |
186 | ||
187 | for (cp = &page[l], dp = &page[m]; *cp; cp++, dp++) { | |
188 | switch (*cp) { | |
189 | case '|': | |
190 | if (*dp != ' ' && *dp != '|' && *dp != 0) | |
191 | return; | |
192 | break; | |
193 | case ' ': | |
194 | break; | |
195 | default: | |
196 | return; | |
197 | } | |
198 | } | |
199 | if (*cp == 0) { | |
200 | for (cp = &page[l], dp = &page[m]; *cp; cp++, dp++) | |
201 | if (*cp == '|') | |
202 | *dp = '|'; | |
203 | else if (*dp == 0) | |
204 | *dp = ' '; | |
205 | page[l][0] = 0; | |
206 | } | |
207 | } | |
208 | ||
209 | copy(to, from, i) | |
210 | register char *to, *from; | |
211 | register int i; | |
212 | { | |
213 | ||
214 | if (i > 0) | |
215 | do | |
216 | *to++ = *from++; | |
217 | while (--i); | |
218 | } | |
219 | ||
220 | clear(at, cnt) | |
221 | register char *at; | |
222 | register int cnt; | |
223 | { | |
224 | ||
225 | if (cnt > 0) | |
226 | do | |
227 | *at++ = 0; | |
228 | while (--cnt); | |
229 | } |