Commit | Line | Data |
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cc6679ee BJ |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
2 | #include <stdio.h> | |
3 | ||
4 | #define BACKSPACE 0 | |
5 | #define QUOTE 0200 | |
6 | /* | |
7 | * iul - a cat like program to indicate underlining for graphic terminals | |
8 | * | |
9 | * Bill Joy UCB June 22, 1977 | |
10 | * | |
11 | * This program was a piece of the editor ex. | |
12 | */ | |
13 | ||
14 | #define LBSIZE 512 | |
15 | ||
16 | char linebuf[LBSIZE], genbuf[LBSIZE]; | |
17 | char *strcpy(); | |
18 | ||
19 | main(argc, argv) | |
20 | int argc; | |
21 | char *argv[]; | |
22 | { | |
23 | register c; | |
24 | register char *lp; | |
25 | char obuf[BUFSIZ]; | |
26 | ||
27 | setbuf(stdout, obuf); | |
28 | argc--; | |
29 | argv++; | |
30 | do { | |
31 | if (argc > 0) { | |
32 | if (freopen(argv[0], "r", stdin) == NULL) { | |
33 | perror(argv[0]); | |
34 | exit(1); | |
35 | } | |
36 | argc--; argv++; | |
37 | } | |
38 | while (fgets(linebuf, sizeof linebuf, stdin) != 0) { | |
39 | for (lp = linebuf; *lp; lp++) | |
40 | continue; | |
41 | *--lp = 0; | |
42 | doulg(); | |
43 | dographic(); | |
44 | if (genbuf[0]) | |
45 | printf("\n%s", genbuf); | |
46 | putchar('\n'); | |
47 | fflush(stdout); | |
48 | } | |
49 | } while (argc > 0); | |
50 | exit(0); | |
51 | } | |
52 | ||
53 | dographic() | |
54 | { | |
55 | register char *lp; | |
56 | register c; | |
57 | ||
58 | for (lp = linebuf; c = *lp++;) { | |
59 | switch (c) { | |
60 | case '\b': | |
61 | if (BACKSPACE == 0) | |
62 | c = '?'; | |
63 | break; | |
64 | default: | |
65 | if (c < ' ' || c == 0177) | |
66 | c = '?'; | |
67 | break; | |
68 | case '\t': | |
69 | break; | |
70 | } | |
71 | putchar(c); | |
72 | } | |
73 | } | |
74 | ||
75 | doulg() | |
76 | { | |
77 | register char *lp, *gp; | |
78 | char *maxgp; | |
79 | register c; | |
80 | char csw; | |
81 | int col; | |
82 | ||
83 | gp = genbuf; | |
84 | *gp = 0; | |
85 | maxgp = gp; | |
86 | col = 0; | |
87 | for (lp = linebuf; c = *lp++;) { | |
88 | switch (c) { | |
89 | case '\t': | |
90 | while ((col & 7) != 7) { | |
91 | *gp++ = ' '; | |
92 | if (gp >= &genbuf[LBSIZE - 2]) | |
93 | goto ovflo; | |
94 | col++; | |
95 | } | |
96 | break; | |
97 | default: | |
98 | if (gp >= maxgp) | |
99 | break; | |
100 | c =| (*gp & QUOTE); | |
101 | break; | |
102 | case '_': | |
103 | if (gp >= maxgp) | |
104 | c = QUOTE; | |
105 | else | |
106 | c = *gp | QUOTE; | |
107 | break; | |
108 | case '\b': | |
109 | if (gp > genbuf) { | |
110 | gp--; | |
111 | col--; | |
112 | } | |
113 | continue; | |
114 | } | |
115 | if (gp >= &genbuf[LBSIZE - 2]) { | |
116 | ovflo: | |
117 | fprintf(stderr, "Line too long\n"); | |
118 | exit(1); | |
119 | } | |
120 | *gp++ = c; | |
121 | if (gp > maxgp) | |
122 | maxgp = gp; | |
123 | col++; | |
124 | } | |
125 | *maxgp = 0; | |
126 | strcpy(linebuf, genbuf); | |
127 | for (lp = linebuf, gp = genbuf; c = *lp; gp++, lp++) | |
128 | if (c & QUOTE) { | |
129 | c =& 0177; | |
130 | if (c == 0) | |
131 | *lp = '_', *gp = ' '; | |
132 | else | |
133 | *lp = c, *gp = '-'; | |
134 | } else | |
135 | *gp = ' '; | |
136 | --gp; | |
137 | while (gp >= genbuf && *gp == ' ') | |
138 | --gp; | |
139 | gp[1] = 0; | |
140 | } |