Fix a bunch of compiler warnings.
[sigrok-cli.git] / parsers.c
1 /*
2  * This file is part of the sigrok-cli project.
3  *
4  * Copyright (C) 2011 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 "sigrok-cli.h"
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <stdint.h>
24 #include <string.h>
25 #include <glib.h>
26
27 static struct sr_probe *find_probe(GSList *probelist, const char *probename)
28 {
29         struct sr_probe *probe;
30         GSList *l;
31
32         probe = NULL;
33         for (l = probelist; l; l = l->next) {
34                 probe = l->data;
35                 if (!strcmp(probe->name, probename))
36                         break;
37         }
38         probe = l ? l->data : NULL;
39
40         return probe;
41 }
42
43 GSList *parse_probestring(struct sr_dev_inst *sdi, const char *probestring)
44 {
45         struct sr_probe *probe;
46         GSList *probelist;
47         int ret, n, b, e, i;
48         char **tokens, **range, **names, *eptr, str[8];
49
50         if (!probestring || !probestring[0])
51                 /* All probes are enabled by default by the driver. */
52                 return NULL;
53
54         ret = SR_OK;
55         range = NULL;
56         names = NULL;
57         probelist = NULL;
58         tokens = g_strsplit(probestring, ",", 0);
59         for (i = 0; tokens[i]; i++) {
60                 if (tokens[i][0] == '\0') {
61                         g_critical("Invalid empty probe.");
62                         ret = SR_ERR;
63                         break;
64                 }
65                 if (strchr(tokens[i], '-')) {
66                         /* A range of probes in the form a-b. This will only work
67                          * if the probes are named as numbers -- so every probe
68                          * in the range must exist as a probe name string in the
69                          * device. */
70                         range = g_strsplit(tokens[i], "-", 2);
71                         if (!range[0] || !range[1] || range[2]) {
72                                 /* Need exactly two arguments. */
73                                 g_critical("Invalid probe syntax '%s'.", tokens[i]);
74                                 ret = SR_ERR;
75                                 goto range_fail;
76                         }
77
78                         b = strtol(range[0], &eptr, 10);
79                         if (eptr == range[0] || *eptr != '\0') {
80                                 g_critical("Invalid probe '%s'.", range[0]);
81                                 ret = SR_ERR;
82                                 goto range_fail;
83                         }
84                         e = strtol(range[1], NULL, 10);
85                         if (eptr == range[1] || *eptr != '\0') {
86                                 g_critical("Invalid probe '%s'.", range[1]);
87                                 ret = SR_ERR;
88                                 goto range_fail;
89                         }
90                         if (b < 0 || b >= e) {
91                                 g_critical("Invalid probe range '%s'.", tokens[i]);
92                                 ret = SR_ERR;
93                                 goto range_fail;
94                         }
95
96                         while (b <= e) {
97                                 n = snprintf(str, 8, "%d", b);
98                                 if (n < 0 || n > 8) {
99                                         g_critical("Invalid probe '%d'.", b);
100                                         ret = SR_ERR;
101                                         break;
102                                 }
103                                 probe = find_probe(sdi->probes, str);
104                                 if (!probe) {
105                                         g_critical("unknown probe '%d'.", b);
106                                         ret = SR_ERR;
107                                         break;
108                                 }
109                                 probelist = g_slist_append(probelist, probe);
110                                 b++;
111                         }
112 range_fail:
113                         if (range)
114                                 g_strfreev(range);
115
116                         if (ret != SR_OK)
117                                 break;
118                 } else {
119                         names = g_strsplit(tokens[i], "=", 2);
120                         if (!names[0] || (names[1] && names[2])) {
121                                 /* Need one or two arguments. */
122                                 g_critical("Invalid probe '%s'.", tokens[i]);
123                                 ret = SR_ERR;
124                                 break;
125                         }
126
127                         probe = find_probe(sdi->probes, names[0]);
128                         if (!probe) {
129                                 g_critical("unknown probe '%s'.", names[0]);
130                                 ret = SR_ERR;
131                                 break;
132                         }
133                         if (names[1]) {
134                                 /* Rename probe. */
135                                 g_free(probe->name);
136                                 probe->name = g_strdup(names[1]);
137                         }
138                         probelist = g_slist_append(probelist, probe);
139
140                         if (names)
141                                 g_strfreev(names);
142                 }
143         }
144
145         if (ret != SR_OK) {
146                 g_slist_free(probelist);
147                 probelist = NULL;
148         }
149
150         g_strfreev(tokens);
151
152         return probelist;
153 }
154
155 GHashTable *parse_generic_arg(const char *arg, gboolean sep_first)
156 {
157         GHashTable *hash;
158         int i;
159         char **elements, *e;
160
161         if (!arg || !arg[0])
162                 return NULL;
163
164         i = 0;
165         hash = g_hash_table_new_full(g_str_hash, g_str_equal,
166                         g_free, g_free);
167         elements = g_strsplit(arg, ":", 0);
168         if (sep_first)
169                 g_hash_table_insert(hash, g_strdup("sigrok_key"),
170                                 g_strdup(elements[i++]));
171         for (; elements[i]; i++) {
172                 e = strchr(elements[i], '=');
173                 if (!e)
174                         g_hash_table_insert(hash, g_strdup(elements[i]), NULL);
175                 else {
176                         *e++ = '\0';
177                         g_hash_table_insert(hash, g_strdup(elements[i]), g_strdup(e));
178                 }
179         }
180         g_strfreev(elements);
181
182         return hash;
183 }
184
185 static char *strcanon(const char *str)
186 {
187         int p0, p1;
188         char *s;
189
190         /* Returns newly allocated string. */
191         s = g_ascii_strdown(str, -1);
192         for (p0 = p1 = 0; str[p0]; p0++) {
193                 if ((s[p0] >= 'a' && s[p0] <= 'z')
194                                 || (s[p0] >= '0' && s[p0] <= '9'))
195                         s[p1++] = s[p0];
196         }
197         s[p1] = '\0';
198
199         return s;
200 }
201
202 int canon_cmp(const char *str1, const char *str2)
203 {
204         int ret;
205         char *s1, *s2;
206
207         s1 = strcanon(str1);
208         s2 = strcanon(str2);
209         ret = g_ascii_strcasecmp(s1, s2);
210         g_free(s2);
211         g_free(s1);
212
213         return ret;
214 }