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diff --git a/src/options.h b/src/options.h
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+/* 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;
+	/* Whether to preserve gamma ramps if supported by gamma method. */
+	int preserve_gamma;
+
+	/* 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 */