aboutsummaryrefslogtreecommitdiff
path: root/lib/parseopt.c
blob: 874edfac793f4204974cddc187f89c5be6deae05 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/* This file is part of GNU Dico.
   Copyright (C) 2008, 2010 Sergey Poznyakoff

   GNU Dico is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   GNU Dico is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GNU Dico.  If not, see <http://www.gnu.org/licenses/>. */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <dico.h>
#include <string.h>
#include <libi18n.h>

static struct dico_option *
find_opt(struct dico_option *opt, const char *str, const char **value)
{
    size_t len = strlen(str);
    int isbool;
	
    if (len > 2 && memcmp(str, "no", 2) == 0) {
	*value = NULL;
	str += 2;
	isbool = 1;
    } else {
	isbool = 0;
	*value = str;
    }
	
    for (; opt->name; opt++) {
	if (len >= opt->len
	    && memcmp(opt->name, str, opt->len) == 0
	    && (!isbool || opt->type == dico_opt_bool)) {
	    int eq = str[opt->len] == '=';
	    
	    switch (opt->type) {
	    case dico_opt_long:
	    case dico_opt_string:
	    case dico_opt_const_string:
	    case dico_opt_enum:
		if (!eq)
		    continue;
		*value = str + opt->len + 1;
		break;

	    case dico_opt_null:
		if (eq)
		    *value = str + opt->len + 1;
		else
		    *value = NULL;
		break;					
				
	    default:
		if (eq)
		    continue;
		break;
	    }
	    return opt;
	}
    }
    return NULL;
}

int
find_value(const char **enumstr, const char *value)
{
    int i;
    for (i = 0; *enumstr; enumstr++, i++)
	if (strcmp(*enumstr, value) == 0)
	    return i;
    return -1;
}

int
dico_parseopt(struct dico_option *opt, int argc, char **argv, int flags,
	      int *pindex)
{
    int i;
    long n;
    char *s;
    int rc = 0;
    const char *modname = argv[0];

    _dico_libi18n_init();

    for (i = (flags & DICO_PARSEOPT_PARSE_ARGV0) ? 0 : 1;
	 i < argc; i++) {
	const char *value;
	struct dico_option *p = find_opt(opt, argv[i], &value);
	
	if (!p) {
	    if (pindex) {
		if (flags & DICO_PARSEOPT_PERMUTE) {
		    int j;

		    for (j = i + 1; j < argc; j++) 
			if ((p = find_opt(opt, argv[j], &value)))
			    break;
		    
		    if (p) {
			char *tmp = argv[j];
			argv[j] = argv[i];
			argv[i] = tmp;
		    } else
			break;
		} else
		    break;
	    } else {
		dico_log(L_ERR, 0, _("%s: %s: unknown option"),
			 modname, argv[i]);
		rc = 1;
		continue;
	    }
	}
				
	switch (p->type) {
	case dico_opt_long:
	    n = strtol(value, &s, 0);
	    if (*s) {
		dico_log(L_ERR, 0, _("%s: %s: %s is not a valid number"),
			 modname, p->name, value);
		rc = 1;
		continue;
	    }
	    *(long*)p->data = n;
	    break;
	    
	case dico_opt_const:
	    *(long*)p->data = p->v.value;
	    break;
	    
	case dico_opt_const_string:
	    *(const char**)p->data = value;
	    break;
	    
	case dico_opt_string:
	    *(const char**)p->data = strdup(value);
	    break;
	    
	case dico_opt_bool:
	    if (p->v.value) {
		if (value)
		    *(int*)p->data |= p->v.value;
		else
		    *(int*)p->data &= ~p->v.value;
	    } else
		*(int*)p->data = value != NULL;
	    break;
	    
	case dico_opt_bitmask:
	    *(int*)p->data |= p->v.value;
	    break;
				
	case dico_opt_bitmask_rev:
	    *(int*)p->data &= ~p->v.value;
	    break;
	    
	case dico_opt_enum:
	    n = find_value(p->v.enumstr, value);
	    if (n == -1) {
		dico_log(L_ERR, 0, _("%s: %s: invalid value %s"),
			 modname, p->name, value);
		rc = 1;
		continue;
	    }
	    *(int*)p->data = n;
	    break;

	case dico_opt_null:
	    break;
	}

	if (p->func && p->func (p, value))
	    rc = 1;
    }
    if (pindex)
	*pindex = i;
    return rc;
}

Return to:

Send suggestions and report system problems to the System administrator.