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1 | /* |
2 | * Copyright (c) 1988 Mark Nudleman | |
3 | * Copyright (c) 1988 Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
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6 | * Redistribution and use in source and binary forms are permitted |
7 | * provided that the above copyright notice and this paragraph are | |
8 | * duplicated in all such forms and that any documentation, | |
9 | * advertising materials, and other materials related to such | |
10 | * distribution and use acknowledge that the software was developed | |
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11 | * by Mark Nudleman and the University of California, Berkeley. The |
12 | * name of Mark Nudleman or the | |
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13 | * University may not be used to endorse or promote products derived |
14 | * from this software without specific prior written permission. | |
15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
17 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
18 | */ | |
19 | ||
20 | #ifndef lint | |
ab46231c | 21 | static char sccsid[] = "@(#)option.c 5.10 (Berkeley) %G%"; |
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22 | #endif /* not lint */ |
23 | ||
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24 | #include <stdio.h> |
25 | #include <less.h> | |
26 | ||
27 | int top_scroll; /* Repaint screen from top */ | |
28 | int bs_mode; /* How to process backspaces */ | |
29 | int caseless; /* Do "caseless" searches */ | |
30 | int cbufs = 10; /* Current number of buffers */ | |
31 | int linenums = 1; /* Use line numbers */ | |
32 | int quit_at_eof; | |
33 | int squeeze; /* Squeeze multiple blank lines into one */ | |
34 | int tabstop = 8; /* Tab settings */ | |
35 | int tagoption; | |
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36 | |
37 | char *firstsearch; | |
38 | extern int sc_height; | |
39 | ||
40 | option(argc, argv) | |
41 | int argc; | |
42 | char **argv; | |
bfe13c81 | 43 | { |
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44 | extern char *optarg; |
45 | extern int optind; | |
46 | static int sc_window_set = 0; | |
47 | int ch; | |
48 | char *p; | |
49 | ||
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50 | /* backward compatible processing for "+/search" */ |
51 | char **a; | |
52 | for (a = argv; *a; ++a) | |
53 | if ((*a)[0] == '+' && (*a)[1] == '/') | |
54 | (*a)[0] = '-'; | |
55 | ||
966c6ec0 | 56 | optind = 1; /* called twice, re-init getopt. */ |
ab46231c | 57 | while ((ch = getopt(argc, argv, "0123456789/:ceinst:ux:f")) != EOF) |
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58 | switch((char)ch) { |
59 | case '0': case '1': case '2': case '3': case '4': | |
60 | case '5': case '6': case '7': case '8': case '9': | |
bfe13c81 | 61 | /* |
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62 | * kludge: more was originally designed to take |
63 | * a number after a dash. | |
bfe13c81 | 64 | */ |
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65 | if (!sc_window_set) { |
66 | p = argv[optind - 1]; | |
67 | if (p[0] == '-' && p[1] == ch && !p[2]) | |
68 | sc_height = atoi(++p); | |
69 | else | |
70 | sc_height = atoi(argv[optind] + 1); | |
71 | sc_window_set = 1; | |
bfe13c81 | 72 | } |
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73 | break; |
74 | case '/': | |
75 | firstsearch = optarg; | |
76 | break; | |
77 | case 'c': | |
78 | top_scroll = 1; | |
79 | break; | |
80 | case 'e': | |
81 | quit_at_eof = 1; | |
82 | break; | |
83 | case 'i': | |
84 | caseless = 1; | |
85 | break; | |
86 | case 'n': | |
87 | linenums = 0; | |
88 | break; | |
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89 | case 's': |
90 | squeeze = 1; | |
91 | break; | |
92 | case 't': | |
93 | tagoption = 1; | |
94 | findtag(optarg); | |
95 | break; | |
96 | case 'u': | |
97 | bs_mode = 1; | |
98 | break; | |
99 | case 'x': | |
100 | tabstop = atoi(optarg); | |
101 | if (tabstop <= 0) | |
102 | tabstop = 8; | |
103 | break; | |
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104 | case 'f': /* ignore -f, compatability with old more */ |
105 | break; | |
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106 | case '?': |
107 | default: | |
108 | fprintf(stderr, | |
750ed434 | 109 | "usage: more [-ceinus] [-t tag] [-x tabs] [-/ pattern] [-#] [file ...]\n"); |
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110 | exit(1); |
111 | } | |
112 | return(optind); | |
bfe13c81 | 113 | } |