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1 | /* | |
2 | * This file is part of the sigrok-cli project. | |
3 | * | |
4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <glib.h> | |
22 | #include <string.h> | |
23 | #include "sigrok-cli.h" | |
24 | ||
25 | static void free_drvopts(struct sr_config *src) | |
26 | { | |
27 | g_variant_unref(src->data); | |
28 | g_free(src); | |
29 | } | |
30 | ||
31 | GSList *device_scan(void) | |
32 | { | |
33 | struct sr_dev_driver **drivers, *driver; | |
34 | GSList *drvopts, *devices, *tmpdevs, *l; | |
35 | int i; | |
36 | ||
37 | if (opt_drv) { | |
38 | /* Caller specified driver. Use it. Only this one. */ | |
39 | if (!parse_driver(opt_drv, &driver, &drvopts)) | |
40 | return NULL; | |
41 | devices = sr_driver_scan(driver, drvopts); | |
42 | g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts); | |
43 | } else if (opt_dont_scan) { | |
44 | /* No -d choice, and -D "don't scan" requested. Do nothing. */ | |
45 | devices = NULL; | |
46 | } else { | |
47 | /* No driver specified. Scan all available drivers. */ | |
48 | devices = NULL; | |
49 | drivers = sr_driver_list(sr_ctx); | |
50 | for (i = 0; drivers[i]; i++) { | |
51 | driver = drivers[i]; | |
52 | if (sr_driver_init(sr_ctx, driver) != SR_OK) { | |
53 | g_critical("Failed to initialize driver."); | |
54 | return NULL; | |
55 | } | |
56 | tmpdevs = sr_driver_scan(driver, NULL); | |
57 | for (l = tmpdevs; l; l = l->next) | |
58 | devices = g_slist_append(devices, l->data); | |
59 | g_slist_free(tmpdevs); | |
60 | } | |
61 | } | |
62 | ||
63 | return devices; | |
64 | } | |
65 | ||
66 | /** | |
67 | * Lookup a channel group from its name. | |
68 | * | |
69 | * Uses the caller specified channel group name, or a previously stored | |
70 | * option value as a fallback. Returns a reference to the channel group | |
71 | * when the lookup succeeded, or #NULL after lookup failure, as well as | |
72 | * #NULL for the global channel group (the device). | |
73 | * | |
74 | * Accepts either #NULL pointer, or an empty string, or the "global" | |
75 | * literal to address the global channel group (the device). Emits an | |
76 | * error message when the lookup failed while a name was specified. | |
77 | * | |
78 | * @param[in] sdi Device instance. | |
79 | * @param[in] cg_name Caller provided channel group name. | |
80 | * | |
81 | * @returns The channel group, or #NULL for failed lookup. | |
82 | */ | |
83 | struct sr_channel_group *lookup_channel_group(struct sr_dev_inst *sdi, | |
84 | const char *cg_name) | |
85 | { | |
86 | struct sr_channel_group *cg; | |
87 | GSList *l, *channel_groups; | |
88 | ||
89 | if (!cg_name) | |
90 | cg_name = opt_channel_group; | |
91 | if (cg_name && g_ascii_strcasecmp(cg_name, "global") == 0) | |
92 | cg_name = NULL; | |
93 | if (!cg_name || !*cg_name) | |
94 | return NULL; | |
95 | ||
96 | channel_groups = sr_dev_inst_channel_groups_get(sdi); | |
97 | if (!channel_groups) { | |
98 | g_critical("This device does not have any channel groups."); | |
99 | return NULL; | |
100 | } | |
101 | ||
102 | for (l = channel_groups; l; l = l->next) { | |
103 | cg = l->data; | |
104 | if (g_ascii_strcasecmp(cg_name, cg->name) != 0) | |
105 | continue; | |
106 | return cg; | |
107 | } | |
108 | g_critical("Invalid channel group '%s'", cg_name); | |
109 | ||
110 | return NULL; | |
111 | } |