Root/scripts/config/lxdialog/lxdialog.c

1/*
2 * dialog - Display simple dialog boxes from shell scripts
3 *
4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include "dialog.h"
23
24static void Usage(const char *name);
25
26typedef int (jumperFn) (const char *title, int argc, const char *const *argv);
27
28struct Mode {
29    char *name;
30    int argmin, argmax, argmod;
31    jumperFn *jumper;
32};
33
34jumperFn j_menu, j_radiolist, j_yesno, j_textbox, j_inputbox;
35jumperFn j_msgbox, j_infobox;
36
37static struct Mode modes[] = {
38    {"--menu", 9, 0, 3, j_menu},
39    {"--radiolist", 9, 0, 3, j_radiolist},
40    {"--yesno", 5, 5, 1, j_yesno},
41    {"--textbox", 5, 5, 1, j_textbox},
42    {"--inputbox", 5, 6, 1, j_inputbox},
43    {"--msgbox", 5, 5, 1, j_msgbox},
44    {"--infobox", 5, 5, 1, j_infobox},
45    {NULL, 0, 0, 0, NULL}
46};
47
48static struct Mode *modePtr;
49
50#ifdef LOCALE
51#include <locale.h>
52#endif
53
54int main(int argc, const char *const *argv)
55{
56    int offset = 0, opt_clear = 0, end_common_opts = 0, retval;
57    const char *title = NULL;
58
59#ifdef LOCALE
60    (void)setlocale(LC_ALL, "");
61#endif
62
63#ifdef TRACE
64    trace(TRACE_CALLS | TRACE_UPDATE);
65#endif
66    if (argc < 2) {
67        Usage(argv[0]);
68        exit(-1);
69    }
70
71    while (offset < argc - 1 && !end_common_opts) { /* Common options */
72        if (!strcmp(argv[offset + 1], "--title")) {
73            if (argc - offset < 3 || title != NULL) {
74                Usage(argv[0]);
75                exit(-1);
76            } else {
77                title = argv[offset + 2];
78                offset += 2;
79            }
80        } else if (!strcmp(argv[offset + 1], "--backtitle")) {
81            if (backtitle != NULL) {
82                Usage(argv[0]);
83                exit(-1);
84            } else {
85                backtitle = argv[offset + 2];
86                offset += 2;
87            }
88        } else if (!strcmp(argv[offset + 1], "--clear")) {
89            if (opt_clear) { /* Hey, "--clear" can't appear twice! */
90                Usage(argv[0]);
91                exit(-1);
92            } else if (argc == 2) { /* we only want to clear the screen */
93                init_dialog();
94                refresh(); /* init_dialog() will clear the screen for us */
95                end_dialog();
96                return 0;
97            } else {
98                opt_clear = 1;
99                offset++;
100            }
101        } else /* no more common options */
102            end_common_opts = 1;
103    }
104
105    if (argc - 1 == offset) { /* no more options */
106        Usage(argv[0]);
107        exit(-1);
108    }
109    /* use a table to look for the requested mode, to avoid code duplication */
110
111    for (modePtr = modes; modePtr->name; modePtr++) /* look for the mode */
112        if (!strcmp(argv[offset + 1], modePtr->name))
113            break;
114
115    if (!modePtr->name)
116        Usage(argv[0]);
117    if (argc - offset < modePtr->argmin)
118        Usage(argv[0]);
119    if (modePtr->argmax && argc - offset > modePtr->argmax)
120        Usage(argv[0]);
121
122    init_dialog();
123    retval = (*(modePtr->jumper)) (title, argc - offset, argv + offset);
124
125    if (opt_clear) { /* clear screen before exit */
126        attr_clear(stdscr, LINES, COLS, screen_attr);
127        refresh();
128    }
129    end_dialog();
130
131    exit(retval);
132}
133
134/*
135 * Print program usage
136 */
137static void Usage(const char *name)
138{
139    fprintf(stderr, "\
140\ndialog, by Savio Lam (lam836@cs.cuhk.hk).\
141\n patched by Stuart Herbert (S.Herbert@shef.ac.uk)\
142\n modified/gutted for use as a Linux kernel config tool by \
143\n William Roadcap (roadcapw@cfw.com)\
144\n\
145\n* Display dialog boxes from shell scripts *\
146\n\
147\nUsage: %s --clear\
148\n %s [--title <title>] [--backtitle <backtitle>] --clear <Box options>\
149\n\
150\nBox options:\
151\n\
152\n --menu <text> <height> <width> <menu height> <tag1> <item1>...\
153\n --radiolist <text> <height> <width> <list height> <tag1> <item1> <status1>...\
154\n --textbox <file> <height> <width>\
155\n --inputbox <text> <height> <width> [<init>]\
156\n --yesno <text> <height> <width>\
157\n", name, name);
158    exit(-1);
159}
160
161/*
162 * These are the program jumpers
163 */
164
165int j_menu(const char *t, int ac, const char *const *av)
166{
167    return dialog_menu(t, av[2], atoi(av[3]), atoi(av[4]),
168               atoi(av[5]), av[6], (ac - 6) / 2, av + 7);
169}
170
171int j_radiolist(const char *t, int ac, const char *const *av)
172{
173    return dialog_checklist(t, av[2], atoi(av[3]), atoi(av[4]),
174                atoi(av[5]), (ac - 6) / 3, av + 6);
175}
176
177int j_textbox(const char *t, int ac, const char *const *av)
178{
179    return dialog_textbox(t, av[2], atoi(av[3]), atoi(av[4]));
180}
181
182int j_yesno(const char *t, int ac, const char *const *av)
183{
184    return dialog_yesno(t, av[2], atoi(av[3]), atoi(av[4]));
185}
186
187int j_inputbox(const char *t, int ac, const char *const *av)
188{
189    int ret = dialog_inputbox(t, av[2], atoi(av[3]), atoi(av[4]),
190                  ac == 6 ? av[5] : (char *)NULL);
191    if (ret == 0)
192        fprintf(stderr, dialog_input_result);
193    return ret;
194}
195
196int j_msgbox(const char *t, int ac, const char *const *av)
197{
198    return dialog_msgbox(t, av[2], atoi(av[3]), atoi(av[4]), 1);
199}
200
201int j_infobox(const char *t, int ac, const char *const *av)
202{
203    return dialog_msgbox(t, av[2], atoi(av[3]), atoi(av[4]), 0);
204}
205

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