2 * config.c -- configuration functions for Browser Switchboard
4 * Copyright (C) 2009-2010 Steven Luo
5 * Derived from a Python implementation by Jason Simpson and Steven Luo
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
27 #include "configfile.h"
30 /* The Browser Switchboard config file options */
31 struct swb_config_option swb_config_options[] = {
32 { "continuous_mode", SWB_CONFIG_OPT_INT, SWB_CONFIG_CONTINUOUS_MODE_SET },
33 { "default_browser", SWB_CONFIG_OPT_STRING, SWB_CONFIG_DEFAULT_BROWSER_SET },
34 { "other_browser_cmd", SWB_CONFIG_OPT_STRING, SWB_CONFIG_OTHER_BROWSER_CMD_SET },
35 { "logging", SWB_CONFIG_OPT_STRING, SWB_CONFIG_LOGGING_SET },
39 /* Browser Switchboard configuration defaults */
40 static struct swb_config swb_config_defaults = {
41 .flags = SWB_CONFIG_INITIALIZED,
43 .default_browser = "microb",
44 .other_browser_cmd = NULL,
49 /* Copy the contents of an swb_config struct
50 The entries[] array means that the standard copy will not work */
51 void swb_config_copy(struct swb_config *dst, struct swb_config *src) {
55 dst->entries[0] = &(dst->continuous_mode);
56 dst->entries[1] = &(dst->default_browser);
57 dst->entries[2] = &(dst->other_browser_cmd);
58 dst->entries[3] = &(dst->logging);
60 dst->flags = src->flags;
62 dst->continuous_mode = src->continuous_mode;
63 dst->default_browser = src->default_browser;
64 dst->other_browser_cmd = src->other_browser_cmd;
65 dst->logging = src->logging;
68 /* Initialize a swb_config struct with configuration defaults */
69 void swb_config_init(struct swb_config *cfg) {
70 swb_config_copy(cfg, &swb_config_defaults);
73 /* Free all heap memory used in an swb_config struct
74 This MUST NOT be done if any of the strings are being used elsewhere! */
75 void swb_config_free(struct swb_config *cfg) {
78 if (!(cfg->flags & SWB_CONFIG_INITIALIZED))
81 if (cfg->flags & SWB_CONFIG_DEFAULT_BROWSER_SET) {
82 free(cfg->default_browser);
83 cfg->default_browser = NULL;
85 if (cfg->flags & SWB_CONFIG_OTHER_BROWSER_CMD_SET) {
86 free(cfg->other_browser_cmd);
87 cfg->other_browser_cmd = NULL;
89 if (cfg->flags & SWB_CONFIG_LOGGING_SET) {
97 /* Load a value into the part of a struct swb_config indicated by name */
98 static int swb_config_load_option(struct swb_config *cfg,
99 char *name, char *value) {
100 struct swb_config_option *opt;
104 for (opt = swb_config_options; opt->name; ++opt) {
105 if (strcmp(name, opt->name))
108 if (!(cfg->flags & opt->set_mask)) {
109 i = opt - swb_config_options;
111 case SWB_CONFIG_OPT_STRING:
112 *(char **)cfg->entries[i] = value;
114 case SWB_CONFIG_OPT_INT:
115 *(int *)cfg->entries[i] = atoi(value);
119 cfg->flags |= opt->set_mask;
131 /* Read the config file and load settings into the provided swb_config struct
132 Caller is responsible for freeing allocated strings with free()
133 Returns true on success, false otherwise */
134 int swb_config_load(struct swb_config *cfg) {
136 struct swb_config_line line;
138 if (!cfg || !(cfg->flags & SWB_CONFIG_INITIALIZED))
141 if (!(fp = open_config_file()))
144 /* Parse the config file
145 TODO: should we handle errors differently than EOF? */
146 if (!parse_config_file_begin())
148 while (!parse_config_file_line(fp, &line)) {
150 swb_config_load_option(cfg, line.key, line.value);
153 parse_config_file_end();