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 },
36 { "autostart_microb", SWB_CONFIG_OPT_INT, SWB_CONFIG_AUTOSTART_MICROB_SET },
40 /* Browser Switchboard configuration defaults */
41 static struct swb_config swb_config_defaults = {
42 .flags = SWB_CONFIG_INITIALIZED,
44 .default_browser = "microb",
45 .other_browser_cmd = NULL,
47 .autostart_microb = -1,
51 /* Copy the contents of an swb_config struct
52 The entries[] array means that the standard copy will not work */
53 void swb_config_copy(struct swb_config *dst, struct swb_config *src) {
57 dst->entries[0] = &(dst->continuous_mode);
58 dst->entries[1] = &(dst->default_browser);
59 dst->entries[2] = &(dst->other_browser_cmd);
60 dst->entries[3] = &(dst->logging);
61 dst->entries[4] = &(dst->autostart_microb);
63 dst->flags = src->flags;
65 dst->continuous_mode = src->continuous_mode;
66 dst->default_browser = src->default_browser;
67 dst->other_browser_cmd = src->other_browser_cmd;
68 dst->logging = src->logging;
69 dst->autostart_microb = src->autostart_microb;
72 /* Initialize a swb_config struct with configuration defaults */
73 void swb_config_init(struct swb_config *cfg) {
74 swb_config_copy(cfg, &swb_config_defaults);
77 /* Free all heap memory used in an swb_config struct
78 This MUST NOT be done if any of the strings are being used elsewhere! */
79 void swb_config_free(struct swb_config *cfg) {
84 if (!(cfg->flags & SWB_CONFIG_INITIALIZED))
87 for (i = 0; swb_config_options[i].name; ++i) {
88 if (cfg->flags & swb_config_options[i].set_mask) {
89 switch (swb_config_options[i].type) {
90 case SWB_CONFIG_OPT_STRING:
91 free(*(char **)cfg->entries[i]);
92 *(char **)cfg->entries[i] = NULL;
103 /* Load a value into the part of a struct swb_config indicated by name */
104 static int swb_config_load_option(struct swb_config *cfg,
105 char *name, char *value) {
106 struct swb_config_option *opt;
109 /* Search through list of recognized config options for a match */
110 for (opt = swb_config_options; opt->name; ++opt) {
111 if (strcmp(name, opt->name))
114 if (!(cfg->flags & opt->set_mask)) {
115 i = opt - swb_config_options;
117 case SWB_CONFIG_OPT_STRING:
118 *(char **)cfg->entries[i] = value;
120 case SWB_CONFIG_OPT_INT:
121 *(int *)cfg->entries[i] = atoi(value);
125 cfg->flags |= opt->set_mask;
127 /* Option was repeated in the config file
128 We want the first value, so ignore this one */
134 /* Unrecognized config option */
139 /* Read the config file and load settings into the provided swb_config struct
140 Caller is responsible for freeing allocated strings with free()
141 Returns true on success, false otherwise */
142 int swb_config_load(struct swb_config *cfg) {
144 struct swb_config_line line;
146 if (!cfg || !(cfg->flags & SWB_CONFIG_INITIALIZED))
149 if (!(fp = open_config_file()))
152 /* Parse the config file
153 TODO: should we handle errors differently than EOF? */
154 if (!parse_config_file_begin())
156 while (!parse_config_file_line(fp, &line)) {
158 swb_config_load_option(cfg, line.key, line.value);
161 parse_config_file_end();