7e791d08489740782175e47487ca2775557501f9
[openocd.git] / src / helper / configuration.c
1 /***************************************************************************
2 * Copyright (C) 2004, 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 √ėyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
12 * *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
20 ***************************************************************************/
21
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25
26 #include "configuration.h"
27 #include "log.h"
28 #include "replacements.h"
29
30 static size_t num_config_files;
31 static char **config_file_names;
32
33 static size_t num_script_dirs;
34 static char **script_search_dirs;
35
36 void add_script_search_dir(const char *dir)
37 {
38 num_script_dirs++;
39 script_search_dirs = realloc(script_search_dirs, (num_script_dirs + 1) * sizeof(char *));
40
41 script_search_dirs[num_script_dirs-1] = strdup(dir);
42 script_search_dirs[num_script_dirs] = NULL;
43
44 LOG_DEBUG("adding %s", dir);
45 }
46
47 void add_config_command(const char *cfg)
48 {
49 num_config_files++;
50 config_file_names = realloc(config_file_names, (num_config_files + 1) * sizeof(char *));
51
52 config_file_names[num_config_files-1] = strdup(cfg);
53 config_file_names[num_config_files] = NULL;
54 }
55
56 void free_config(void)
57 {
58 while (num_config_files)
59 free(config_file_names[--num_config_files]);
60
61 free(config_file_names);
62 config_file_names = NULL;
63
64 while (num_script_dirs)
65 free(script_search_dirs[--num_script_dirs]);
66
67 free(script_search_dirs);
68 script_search_dirs = NULL;
69 }
70
71 /* return full path or NULL according to search rules */
72 char *find_file(const char *file)
73 {
74 FILE *fp = NULL;
75 char **search_dirs = script_search_dirs;
76 char *dir;
77 char const *mode = "r";
78 char *full_path;
79
80 /* Check absolute and relative to current working dir first.
81 * This keeps full_path reporting belowing working. */
82 full_path = alloc_printf("%s", file);
83 fp = fopen(full_path, mode);
84
85 while (!fp) {
86 free(full_path);
87 full_path = NULL;
88 dir = *search_dirs++;
89
90 if (!dir)
91 break;
92
93 full_path = alloc_printf("%s/%s", dir, file);
94 fp = fopen(full_path, mode);
95 }
96
97 if (fp) {
98 fclose(fp);
99 LOG_DEBUG("found %s", full_path);
100 return full_path;
101 }
102
103 free(full_path);
104
105 return NULL;
106 }
107
108 FILE *open_file_from_path(const char *file, const char *mode)
109 {
110 if (mode[0] != 'r')
111 return fopen(file, mode);
112 else {
113 char *full_path = find_file(file);
114 if (!full_path)
115 return NULL;
116 FILE *fp = NULL;
117 fp = fopen(full_path, mode);
118 free(full_path);
119 return fp;
120 }
121 }
122
123 int parse_config_file(struct command_context *cmd_ctx)
124 {
125 int retval;
126 char **cfg;
127
128 if (!config_file_names) {
129 command_run_line(cmd_ctx, "script openocd.cfg");
130 return ERROR_OK;
131 }
132
133 cfg = config_file_names;
134
135 while (*cfg) {
136 retval = command_run_line(cmd_ctx, *cfg);
137 if (retval != ERROR_OK)
138 return retval;
139 cfg++;
140 }
141
142 return ERROR_OK;
143 }
144
145 #ifndef _WIN32
146 #include <pwd.h>
147 #endif
148
149 char *get_home_dir(const char *append_path)
150 {
151 char *home = getenv("HOME");
152
153 if (!home) {
154
155 #ifdef _WIN32
156 home = getenv("USERPROFILE");
157
158 if (!home) {
159
160 char homepath[MAX_PATH];
161 char *drive = getenv("HOMEDRIVE");
162 char *path = getenv("HOMEPATH");
163 if (drive && path) {
164 snprintf(homepath, MAX_PATH, "%s/%s", drive, path);
165 home = homepath;
166 }
167 }
168 #else
169 struct passwd *pwd = getpwuid(getuid());
170 if (pwd)
171 home = pwd->pw_dir;
172
173 #endif
174 }
175
176 if (!home)
177 return home;
178
179 char *home_path;
180
181 if (append_path)
182 home_path = alloc_printf("%s/%s", home, append_path);
183 else
184 home_path = alloc_printf("%s", home);
185
186 return home_path;
187 }

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