Move options handling to separate file

Create options.c which contains functions for initializing and
parsing options from the command line and the configuration file.
Program options that were previously local variables in main() are
moved to the options_t struct.

1 files changed, 61 insertions, 0 deletions

diff --git a/src/options.h b/src/options.h
new file mode 100644
index 0000000..95a31b1
--- /dev/null
+++ b/src/options.h
@@ -0,0 +1,61 @@
+/* options.h -- Program options header
+   This file is part of Redshift.
+
+   Redshift is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Redshift is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Redshift.  If not, see <http://www.gnu.org/licenses/>.
+
+   Copyright (c) 2017  Jon Lund Steffensen <jonlst@gmail.com>
+*/
+
+#ifndef REDSHIFT_OPTIONS_H
+#define REDSHIFT_OPTIONS_H
+
+#include "redshift.h"
+
+typedef struct {
+	/* Path to config file */
+	char *config_filepath;
+
+	transition_scheme_t scheme;
+	program_mode_t mode;
+	int verbose;
+
+	/* Temperature to set in manual mode. */
+	int temp_set;
+	/* Whether to fade between large skips in color temperature. */
+	int use_fade;
+
+	/* Selected gamma method. */
+	const gamma_method_t *method;
+	/* Arguments for gamma method. */
+	char *method_args;
+
+	/* Selected location provider. */
+	const location_provider_t *provider;
+	/* Arguments for location provider. */
+	char *provider_args;
+} options_t;
+
+
+void options_init(options_t *options);
+void options_parse_args(
+	options_t *options, int argc, char *argv[],
+	const gamma_method_t *gamma_methods,
+	const location_provider_t *location_providers);
+void options_parse_config_file(
+	options_t *options, config_ini_state_t *config_state,
+	const gamma_method_t *gamma_methods,
+	const location_provider_t *location_providers);
+void options_set_defaults(options_t *options);
+
+#endif /* ! REDSHIFT_OPTIONS_H */