swaynag: implement config file support

7 files changed, 470 insertions, 122 deletions

diff --git a/swaynag/main.c b/swaynag/main.c
index 60560c72..b199fac4 100644
--- a/swaynag/main.c
+++ b/swaynag/main.c
@@ -1,10 +1,14 @@
-#define _XOPEN_SOURCE 500
+#define _XOPEN_SOURCE 700
+#define _POSIX_C_SOURCE 200112L
 #include <getopt.h>
 #include <signal.h>
+#include <stdlib.h>
+#include <wordexp.h>
 #include "log.h"
 #include "list.h"
 #include "readline.h"
 #include "swaynag/nagbar.h"
+#include "swaynag/types.h"
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 static struct sway_nagbar nagbar;
@@ -19,22 +23,6 @@ void sway_terminate(int code) {
         exit(code);
 }
 
-static void set_nagbar_colors() {
-        if (nagbar.type == NAGBAR_ERROR) {
-                nagbar.colors.button_background = 0x680A0AFF;
-                nagbar.colors.background = 0x900000FF;
-                nagbar.colors.text = 0xFFFFFFFF;
-                nagbar.colors.border = 0xD92424FF;
-                nagbar.colors.border_bottom = 0x470909FF;
-        } else if (nagbar.type == NAGBAR_WARNING) {
-                nagbar.colors.button_background = 0xFFC100FF;
-                nagbar.colors.background = 0xFFA800FF;
-                nagbar.colors.text = 0x000000FF;
-                nagbar.colors.border = 0xAB7100FF;
-                nagbar.colors.border_bottom = 0xAB7100FF;
-        }
-}
-
 static char *read_from_stdin() {
         char *buffer = NULL;
         while (!feof(stdin)) {
@@ -61,32 +49,11 @@ static char *read_from_stdin() {
         return buffer;
 }
 
-int main(int argc, char **argv) {
-        int exit_code = EXIT_SUCCESS;
-        bool debug = false;
-
-        memset(&nagbar, 0, sizeof(nagbar));
-        nagbar.anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
-                | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
-                | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
-        nagbar.type = NAGBAR_ERROR;
-        set_nagbar_colors();
-        nagbar.font = strdup("pango:monospace 10");
-        nagbar.buttons = create_list();
-
-        struct sway_nagbar_button *button_close =
-                calloc(sizeof(struct sway_nagbar_button), 1);
-        button_close->text = strdup("X");
-        button_close->type = NAGBAR_ACTION_DISMISS;
-        list_add(nagbar.buttons, button_close);
-
-        struct sway_nagbar_button *button_details =
-                calloc(sizeof(struct sway_nagbar_button), 1);
-        button_details->text = strdup("Toggle Details");
-        button_details->type = NAGBAR_ACTION_EXPAND;
-
+static int parse_options(int argc, char **argv, struct sway_nagbar *nagbar,
+                list_t *types, char **config, bool *debug) {
         static struct option opts[] = {
                 {"button", required_argument, NULL, 'b'},
+                {"config", required_argument, NULL, 'c'},
                 {"debug", no_argument, NULL, 'd'},
                 {"edge", required_argument, NULL, 'e'},
                 {"font", required_argument, NULL, 'f'},
@@ -106,6 +73,7 @@ int main(int argc, char **argv) {
                 "\n"
                 "  -b, --button <text> <action>  Create a button with text that "
                         "executes action when pressed. Multiple buttons can be defined.\n"
+                "  -c, --config <path>           Path to config file.\n"
                 "  -d, --debug                   Enable debugging.\n"
                 "  -e, --edge top|bottom         Set the edge to use.\n"
                 "  -f, --font <font>             Set the font to use.\n"
@@ -115,114 +83,301 @@ int main(int argc, char **argv) {
                 "  -m, --message <msg>           Set the message text.\n"
                 "  -o, --output <output>         Set the output to use.\n"
                 "  -s, --dismiss-button <text>   Set the dismiss button text.\n"
-                "  -t, --type error|warning      Set the message type.\n"
+                "  -t, --type <type>             Set the message type.\n"
                 "  -v, --version                 Show the version number and quit.\n";
 
+        optind = 1;
         while (1) {
-                int c = getopt_long(argc, argv, "b:de:f:hlL:m:o:s:t:v", opts, NULL);
+                int c = getopt_long(argc, argv, "b:c:de:f:hlL:m:o:s:t:v", opts, NULL);
                 if (c == -1) {
                         break;
                 }
                 switch (c) {
                 case 'b': // Button
-                        if (optind >= argc) {
-                                fprintf(stderr, "Missing action for button %s\n", optarg);
-                                exit_code = EXIT_FAILURE;
-                                goto cleanup;
-                        }
-                        struct sway_nagbar_button *button;
-                        button = calloc(sizeof(struct sway_nagbar_button), 1);
-                        button->text = strdup(optarg);
-                        button->type = NAGBAR_ACTION_COMMAND;
-                        button->action = strdup(argv[optind]);
-                        optind++;
-                        list_add(nagbar.buttons, button);
+                        if (nagbar) {
+                                if (optind >= argc) {
+                                        fprintf(stderr, "Missing action for button %s\n", optarg);
+                                        return EXIT_FAILURE;
+                                }
+                                struct sway_nagbar_button *button;
+                                button = calloc(sizeof(struct sway_nagbar_button), 1);
+                                button->text = strdup(optarg);
+                                button->type = NAGBAR_ACTION_COMMAND;
+                                button->action = strdup(argv[optind]);
+                                optind++;
+                                list_add(nagbar->buttons, button);
+                        }
+                        break;
+                case 'c': // Config
+                        if (config) {
+                                *config = strdup(optarg);
+                        }
                         break;
                 case 'd': // Debug
-                        debug = true;
+                        if (debug) {
+                                *debug = true;
+                        }
                         break;
                 case 'e': // Edge
-                        if (strcmp(optarg, "top") == 0) {
-                                nagbar.anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
-                                        | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
-                                        | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
-                        } else if (strcmp(optarg, "bottom") == 0) {
-                                nagbar.anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM
-                                        | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
-                                        | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
-                        } else {
-                                fprintf(stderr, "Invalid edge: %s\n", optarg);
-                                exit_code = EXIT_FAILURE;
-                                goto cleanup;
+                        if (nagbar) {
+                                if (strcmp(optarg, "top") == 0) {
+                                        nagbar->anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
+                                                | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
+                                                | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+                                } else if (strcmp(optarg, "bottom") == 0) {
+                                        nagbar->anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM
+                                                | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
+                                                | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+                                } else {
+                                        fprintf(stderr, "Invalid edge: %s\n", optarg);
+                                        return EXIT_FAILURE;
+                                }
                         }
                         break;
                 case 'f': // Font
-                        free(nagbar.font);
-                        nagbar.font = strdup(optarg);
+                        if (nagbar) {
+                                free(nagbar->font);
+                                nagbar->font = strdup(optarg);
+                        }
                         break;
                 case 'l': // Detailed Message
-                        free(nagbar.details.message);
-                        nagbar.details.message = read_from_stdin();
-                        nagbar.details.button_up.text = strdup("▲");
-                        nagbar.details.button_down.text = strdup("▼");
+                        if (nagbar) {
+                                free(nagbar->details.message);
+                                nagbar->details.message = read_from_stdin();
+                                nagbar->details.button_up.text = strdup("▲");
+                                nagbar->details.button_down.text = strdup("▼");
+                        }
                         break;
                 case 'L': // Detailed Button Text
-                        free(button_details->text);
-                        button_details->text = strdup(optarg);
+                        if (nagbar) {
+                                free(nagbar->details.button_details.text);
+                                nagbar->details.button_details.text = strdup(optarg);
+                        }
                         break;
                 case 'm': // Message
-                        free(nagbar.message);
-                        nagbar.message = strdup(optarg);
+                        if (nagbar) {
+                                free(nagbar->message);
+                                nagbar->message = strdup(optarg);
+                        }
                         break;
                 case 'o': // Output
-                        free(nagbar.output.name);
-                        nagbar.output.name = strdup(optarg);
+                        if (nagbar) {
+                                free(nagbar->output.name);
+                                nagbar->output.name = strdup(optarg);
+                        }
                         break;
                 case 's': // Dismiss Button Text
-                        free(button_close->text);
-                        button_close->text = strdup(optarg);
+                        if (nagbar) {
+                                struct sway_nagbar_button *button_close;
+                                button_close = nagbar->buttons->items[0];
+                                free(button_close->text);
+                                button_close->text = strdup(optarg);
+                        }
                         break;
                 case 't': // Type
-                        if (strcmp(optarg, "error") == 0) {
-                                nagbar.type = NAGBAR_ERROR;
-                        } else if (strcmp(optarg, "warning") == 0) {
-                                nagbar.type = NAGBAR_WARNING;
-                        } else {
-                                fprintf(stderr, "Type must be either 'error' or 'warning'\n");
-                                exit_code = EXIT_FAILURE;
-                                goto cleanup;
+                        if (nagbar) {
+                                nagbar->type = nagbar_type_get(types, optarg);
+                                if (!nagbar->type) {
+                                        fprintf(stderr, "Unknown type %s\n", optarg);
+                                        return EXIT_FAILURE;
+                                }
                         }
-                        set_nagbar_colors();
                         break;
                 case 'v': // Version
                         fprintf(stdout, "swaynag version " SWAY_VERSION "\n");
-                        exit_code = EXIT_SUCCESS;
-                        goto cleanup;
+                        return -1;
                 default: // Help or unknown flag
                         fprintf(c == 'h' ? stdout : stderr, "%s", usage);
-                        exit_code = c == 'h' ? EXIT_SUCCESS : EXIT_FAILURE;
-                        goto cleanup;
+                        return -1;
+                }
+        }
+
+        return 0;
+}
+
+static bool file_exists(const char *path) {
+        return path && access(path, R_OK) != -1;
+}
+
+static char *get_config_path(void) {
+        static const char *config_paths[] = {
+                "$HOME/.swaynag/config",
+                "$XDG_CONFIG_HOME/swaynag/config",
+                SYSCONFDIR "/swaynag/config",
+        };
+
+        if (!getenv("XDG_CONFIG_HOME")) {
+                char *home = getenv("HOME");
+                char *config_home = malloc(strlen(home) + strlen("/.config") + 1);
+                if (!config_home) {
+                        wlr_log(WLR_ERROR, "Unable to allocate $HOME/.config");
+                } else {
+                        strcpy(config_home, home);
+                        strcat(config_home, "/.config");
+                        setenv("XDG_CONFIG_HOME", config_home, 1);
+                        wlr_log(WLR_DEBUG, "Set XDG_CONFIG_HOME to %s", config_home);
+                        free(config_home);
+                }
+        }
+
+        wordexp_t p;
+        char *path;
+        for (size_t i = 0; i < sizeof(config_paths) / sizeof(char *); ++i) {
+                if (wordexp(config_paths[i], &p, 0) == 0) {
+                        path = strdup(p.we_wordv[0]);
+                        wordfree(&p);
+                        if (file_exists(path)) {
+                                return path;
+                        }
+                        free(path);
+                }
+        }
+
+        return NULL;
+}
+
+static int load_config(char *path, struct sway_nagbar *nagbar, list_t *types) {
+        FILE *config = fopen(path, "r");
+        if (!config) {
+                fprintf(stderr, "Failed to read config. Running without it.\n");
+                return 0;
+        }
+        struct sway_nagbar_type *type = NULL;
+        char *line;
+        int line_number = 0;
+        while (!feof(config)) {
+                line = read_line(config);
+                if (!line) {
+                        continue;
+                }
+
+                line_number++;
+                if (line[0] == '#') {
+                        free(line);
+                        continue;
                 }
+                if (strlen(line) == 0) {
+                        free(line);
+                        continue;
+                }
+
+                if (line[0] == '[') {
+                        char *close = strchr(line, ']');
+                        if (!close) {
+                                free(line);
+                                fclose(config);
+                                fprintf(stderr, "Closing bracket not found on line %d\n",
+                                                line_number);
+                                return 1;
+                        }
+                        char *name = calloc(1, close - line);
+                        strncat(name, line + 1, close - line - 1);
+                        type = nagbar_type_get(types, name);
+                        if (!type) {
+                                type = calloc(1, sizeof(struct sway_nagbar_type));
+                                type->name = strdup(name);
+                                list_add(types, type);
+                        }
+                        free(name);
+                } else {
+                        char flag[strlen(line) + 3];
+                        sprintf(flag, "--%s", line);
+                        char *argv[] = {"swaynag", flag};
+                        int result;
+                        if (type) {
+                                result = nagbar_parse_type(2, argv, type);
+                        } else {
+                                result = parse_options(2, argv, nagbar, types, NULL, NULL);
+                        }
+                        if (result != 0) {
+                                free(line);
+                                fclose(config);
+                                return result;
+                        }
+                }
+
+                free(line);
         }
+        fclose(config);
+        return 0;
+}
+
+int main(int argc, char **argv) {
+        int exit_code = EXIT_SUCCESS;
+
+        list_t *types = create_list();
+        nagbar_types_add_default(types);
+
+        memset(&nagbar, 0, sizeof(nagbar));
+        nagbar.anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
+                | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
+                | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+        nagbar.font = strdup("pango:monospace 10");
+        nagbar.buttons = create_list();
+
+        struct sway_nagbar_button *button_close =
+                calloc(sizeof(struct sway_nagbar_button), 1);
+        button_close->text = strdup("X");
+        button_close->type = NAGBAR_ACTION_DISMISS;
+        list_add(nagbar.buttons, button_close);
+
+        nagbar.details.button_details.text = strdup("Toggle Details");
+        nagbar.details.button_details.type = NAGBAR_ACTION_EXPAND;
 
+
+        char *config_path = NULL;
+        bool debug = false;
+        int launch_status = parse_options(argc, argv, NULL, NULL,
+                        &config_path, &debug);
+        if (launch_status != 0)  {
+                exit_code = launch_status;
+                goto cleanup;
+        }
         wlr_log_init(debug ? WLR_DEBUG : WLR_ERROR, NULL);
 
+        if (!config_path) {
+                config_path = get_config_path();
+        }
+        if (config_path) {
+                wlr_log(WLR_DEBUG, "Loading config file: %s", config_path);
+                int config_status = load_config(config_path, &nagbar, types);
+                free(config_path);
+                if (config_status != 0) {
+                        exit_code = config_status;
+                        goto cleanup;
+                }
+        }
+
+        if (argc > 1) {
+                int result = parse_options(argc, argv, &nagbar, types, NULL, NULL);
+                if (result != 0) {
+                        exit_code = result;
+                        goto cleanup;
+                }
+        }
+
         if (!nagbar.message) {
                 wlr_log(WLR_ERROR, "No message passed. Please provide --message/-m");
                 exit_code = EXIT_FAILURE;
                 goto cleanup;
         }
 
+        if (!nagbar.type) {
+                nagbar.type = nagbar_type_get(types, "error");
+        }
+
+        nagbar.type = nagbar_type_clone(nagbar.type);
+        nagbar_types_free(types);
+
         if (nagbar.details.message) {
-                list_add(nagbar.buttons, button_details);
+                list_add(nagbar.buttons, &nagbar.details.button_details);
         } else {
-                free(button_details->text);
-                free(button_details);
+                free(nagbar.details.button_details.text);
         }
 
         wlr_log(WLR_DEBUG, "Output: %s", nagbar.output.name);
         wlr_log(WLR_DEBUG, "Anchors: %d", nagbar.anchors);
-        wlr_log(WLR_DEBUG, "Type: %d", nagbar.type);
+        wlr_log(WLR_DEBUG, "Type: %s", nagbar.type->name);
         wlr_log(WLR_DEBUG, "Message: %s", nagbar.message);
         wlr_log(WLR_DEBUG, "Font: %s", nagbar.font);
         wlr_log(WLR_DEBUG, "Buttons");
@@ -238,8 +393,8 @@ int main(int argc, char **argv) {
         return exit_code;
 
 cleanup:
-        free(button_details->text);
-        free(button_details);
+        nagbar_types_free(types);
+        free(nagbar.details.button_details.text);
         nagbar_destroy(&nagbar);
         return exit_code;
 }
diff --git a/swaynag/meson.build b/swaynag/meson.build
index 6492e4dc..6a9df984 100644
--- a/swaynag/meson.build
+++ b/swaynag/meson.build
@@ -3,6 +3,7 @@ executable(
                 'main.c',
                 'nagbar.c',
                 'render.c',
+                'types.c',
         ],
         include_directories: [sway_inc],
         dependencies: [
diff --git a/swaynag/nagbar.c b/swaynag/nagbar.c
index 6647e8c2..a20a9095 100644
--- a/swaynag/nagbar.c
+++ b/swaynag/nagbar.c
@@ -8,6 +8,7 @@
 #include "list.h"
 #include "swaynag/nagbar.h"
 #include "swaynag/render.h"
+#include "swaynag/types.h"
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 static void nop() {
@@ -386,6 +387,10 @@ void nagbar_destroy(struct sway_nagbar *nagbar) {
         free(nagbar->details.button_up.text);
         free(nagbar->details.button_down.text);
 
+        if (nagbar->type) {
+                nagbar_type_free(nagbar->type);
+        }
+
         if (nagbar->layer_surface) {
                 zwlr_layer_surface_v1_destroy(nagbar->layer_surface);
         }
diff --git a/swaynag/render.c b/swaynag/render.c
index 150ae3f2..134c247e 100644
--- a/swaynag/render.c
+++ b/swaynag/render.c
@@ -4,6 +4,7 @@
 #include "pango.h"
 #include "pool-buffer.h"
 #include "swaynag/nagbar.h"
+#include "swaynag/types.h"
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 static uint32_t render_message(cairo_t *cairo, struct sway_nagbar *nagbar) {
@@ -22,7 +23,7 @@ static uint32_t render_message(cairo_t *cairo, struct sway_nagbar *nagbar) {
                 return ideal_surface_height;
         }
 
-        cairo_set_source_u32(cairo, nagbar->colors.text);
+        cairo_set_source_u32(cairo, nagbar->type->text);
         cairo_move_to(cairo, padding, (int)(ideal_height - text_height) / 2);
         pango_printf(cairo, nagbar->font, nagbar->scale, true, "%s",
                         nagbar->message);
@@ -39,17 +40,17 @@ static void render_details_scroll_button(cairo_t *cairo,
         int border = NAGBAR_BUTTON_BORDER_THICKNESS * nagbar->scale;
         int padding = NAGBAR_BUTTON_PADDING * nagbar->scale;
 
-        cairo_set_source_u32(cairo, nagbar->colors.border);
+        cairo_set_source_u32(cairo, nagbar->type->border);
         cairo_rectangle(cairo, button->x, button->y,
                         button->width, button->height);
         cairo_fill(cairo);
 
-        cairo_set_source_u32(cairo, nagbar->colors.button_background);
+        cairo_set_source_u32(cairo, nagbar->type->button_background);
         cairo_rectangle(cairo, button->x + border, button->y + border,
                         button->width - (border * 2), button->height - (border * 2));
         cairo_fill(cairo);
 
-        cairo_set_source_u32(cairo, nagbar->colors.text);
+        cairo_set_source_u32(cairo, nagbar->type->text);
         cairo_move_to(cairo, button->x + border + padding,
                         button->y + border + (button->height - text_height) / 2);
         pango_printf(cairo, nagbar->font, nagbar->scale, true, "%s", button->text);
@@ -154,14 +155,14 @@ static uint32_t render_detailed(cairo_t *cairo, struct sway_nagbar *nagbar,
                                 &nagbar->details.button_down);
         }
 
-        cairo_set_source_u32(cairo, nagbar->colors.border);
+        cairo_set_source_u32(cairo, nagbar->type->border);
         cairo_rectangle(cairo, nagbar->details.x, nagbar->details.y,
                         nagbar->details.width, nagbar->details.height);
         cairo_fill(cairo);
 
         cairo_move_to(cairo, nagbar->details.x + padding,
                         nagbar->details.y + padding);
-        cairo_set_source_u32(cairo, nagbar->colors.text);
+        cairo_set_source_u32(cairo, nagbar->type->text);
         pango_cairo_show_layout(cairo, layout);
         g_object_unref(layout);
 
@@ -192,17 +193,17 @@ static uint32_t render_button(cairo_t *cairo, struct sway_nagbar *nagbar,
         button->width = text_width + padding * 2;
         button->height = text_height + padding * 2;
 
-        cairo_set_source_u32(cairo, nagbar->colors.border);
+        cairo_set_source_u32(cairo, nagbar->type->border);
         cairo_rectangle(cairo, button->x - border, button->y - border,
                         button->width + border * 2, button->height + border * 2);
         cairo_fill(cairo);
 
-        cairo_set_source_u32(cairo, nagbar->colors.button_background);
+        cairo_set_source_u32(cairo, nagbar->type->button_background);
         cairo_rectangle(cairo, button->x, button->y,
                         button->width, button->height);
         cairo_fill(cairo);
 
-        cairo_set_source_u32(cairo, nagbar->colors.text);
+        cairo_set_source_u32(cairo, nagbar->type->text);
         cairo_move_to(cairo, button->x + padding, button->y + padding);
         pango_printf(cairo, nagbar->font, nagbar->scale, true, "%s", button->text);
 
@@ -215,7 +216,7 @@ static uint32_t render_to_cairo(cairo_t *cairo, struct sway_nagbar *nagbar) {
         uint32_t max_height = 0;
 
         cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
-        cairo_set_source_u32(cairo, nagbar->colors.background);
+        cairo_set_source_u32(cairo, nagbar->type->background);
         cairo_paint(cairo);
 
         uint32_t h = render_message(cairo, nagbar);
@@ -240,7 +241,7 @@ static uint32_t render_to_cairo(cairo_t *cairo, struct sway_nagbar *nagbar) {
         if (max_height > nagbar->height) {
                 max_height += border;
         }
-        cairo_set_source_u32(cairo, nagbar->colors.border_bottom);
+        cairo_set_source_u32(cairo, nagbar->type->border_bottom);
         cairo_rectangle(cairo, 0, nagbar->height * nagbar->scale - border,
                         nagbar->width * nagbar->scale, border);
         cairo_fill(cairo);
diff --git a/swaynag/swaynag.1.scd b/swaynag/swaynag.1.scd
index 879aaf2e..7d250a45 100644
--- a/swaynag/swaynag.1.scd
+++ b/swaynag/swaynag.1.scd
@@ -1,4 +1,4 @@
-swaynagbar(1)
+swaynag(1)
 
 # NAME
 
@@ -13,13 +13,21 @@ _swaynag_ [options...]
         Create a button with the text _text_ that executes _action_ when pressed.
         Multiple buttons can be defined by providing the flag multiple times.
 
+*-c, --config* <path>
+        The config file to use. By default, the following paths are checked:
+        _$HOME/.swaynag/config_, _$XDG\_CONFIG\_HOME/swaynag/config_, and
+        _SYSCONFDIR/swaynag/config_. All flags aside from this one and _debug_ are
+        valid options in the configuration file using the format
+        _long-option=value_. All leading dashes should be omitted and the equals
+        sign is required. See swaynag(5) for more information.
+
 *-d, --debug*
         Enable debugging.
 
-*-e, --edge top|bottom*
+*-e, --edge* top|bottom
         Set the edge to use.
 
-*-f, --font <font>*
+*-f, --font* <font>
         Set the font to use.
 
 *-h, --help*
@@ -29,24 +37,29 @@ _swaynag_ [options...]
         Read a detailed message from stdin. A button to toggle details will be
         added. Details are shown in a scrollable multi-line text area.
 
-*-L, --detailed-button <text>*
+*-L, --detailed-button* <text>
         Set the text for the button that toggles details. This has no effect if
         there is not a detailed message. The default is _Toggle Details_.
 
-*-m, --message <msg>*
+*-m, --message* <msg>
         Set the message text.
 
-*-o, --output <output>*
+*-o, --output* <output>
         Set the output to use. This should be the name of a _xdg\_output_. If
         _xdg\_output\_manager_ is not supported, then the first detected output
         will be used
 
-*-s, --dismiss-button <text>*
+*-s, --dismiss-button* <text>
         Sets the text for the dismiss nagbar button. The default is _X_.
 
-*-t, --type error|warning*
-        Set the message type.
+*-t, --type*
+        Set the message type. Two types are created by default _error_ and
+        _warning_. Custom types can be defined in the config file. See
+        _--config_ and swaynag(5) for details. Both of the default types can be
+        overridden in the config file as well.
 
-*-v, --version
+*-v, --version*
         Show the version number and quit.
 
+# SEE
+swaynag(5)
diff --git a/swaynag/swaynag.5.scd b/swaynag/swaynag.5.scd
new file mode 100644
index 00000000..a4e05e3a
--- /dev/null
+++ b/swaynag/swaynag.5.scd
@@ -0,0 +1,57 @@
+swaynag(5)
+
+# NAME
+
+swaynag - swaynag configuration file
+
+# SYNOPSIS
+
+$HOME/.swaynag/config, $XDG\_CONFIG\_HOME/swaynag/config,
+SYSCONFDIR/swaynag/config
+
+# CONFIG FILE
+At the top of the config file, _swaynag_ options can be set using the format
+_long-option=value_. These will be used as default values if _swaynag_ is not
+given the option. This can be useful for setting a preferred font, output, and
+edge.
+
+Below the options, custom types may be defined. To define a type, use the
+following format:
+
+```
+[name-of-type]
+color=RRGGBB[AA]
+```
+
+All colors may be given in the form _RRGGBB_ or _RRGGBBAA_. The following
+colors can be set:
+
+*background*
+        The background color for _swaynag_.
+
+*border*
+        The color to use for borders of buttons.
+
+*border-bottom*
+        The color of the border line at the bottom of _swaynag_.
+
+*button-background*
+        The background color for the buttons.
+
+*text*
+        The color of the text.
+
+# EXAMPLE
+```
+font=Monospace 12
+
+[green]
+background=00AA00
+border=006600
+border-bottom=004400
+text=FFFFFF
+button-background=00CC00
+```
+
+# SEE
+swaynag(1)
diff --git a/swaynag/types.c b/swaynag/types.c
new file mode 100644
index 00000000..8dd99d2a
--- /dev/null
+++ b/swaynag/types.c
@@ -0,0 +1,116 @@
+#define _XOPEN_SOURCE 500
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include "list.h"
+#include "swaynag/types.h"
+#include "util.h"
+
+void nagbar_types_add_default(list_t *types) {
+        struct sway_nagbar_type *type_error;
+        type_error = calloc(1, sizeof(struct sway_nagbar_type));
+        type_error->name = strdup("error");
+        type_error->button_background = 0x680A0AFF;
+        type_error->background = 0x900000FF;
+        type_error->text = 0xFFFFFFFF;
+        type_error->border = 0xD92424FF;
+        type_error->border_bottom = 0x470909FF;
+        list_add(types, type_error);
+
+        struct sway_nagbar_type *type_warning;
+        type_warning = calloc(1, sizeof(struct sway_nagbar_type));
+        type_warning->name = strdup("warning");
+        type_warning->button_background = 0xFFC100FF;
+        type_warning->background = 0xFFA800FF;
+        type_warning->text = 0x000000FF;
+        type_warning->border = 0xAB7100FF;
+        type_warning->border_bottom = 0xAB7100FF;
+        list_add(types, type_warning);
+}
+
+struct sway_nagbar_type *nagbar_type_get(list_t *types, char *name) {
+        for (int i = 0; i < types->length; i++) {
+                struct sway_nagbar_type *type = types->items[i];
+                if (strcasecmp(type->name, name) == 0) {
+                        return type;
+                }
+        }
+        return NULL;
+}
+
+struct sway_nagbar_type *nagbar_type_clone(struct sway_nagbar_type *type) {
+        struct sway_nagbar_type *clone;
+        clone = calloc(1, sizeof(struct sway_nagbar_type));
+        clone->name = strdup(type->name);
+        clone->button_background = type->button_background;
+        clone->background = type->background;
+        clone->text = type->text;
+        clone->border = type->border;
+        clone->border_bottom = type->border_bottom;
+        return clone;
+}
+
+void nagbar_type_free(struct sway_nagbar_type *type) {
+        free(type->name);
+        free(type);
+}
+
+void nagbar_types_free(list_t *types) {
+        while (types->length) {
+                struct sway_nagbar_type *type = types->items[0];
+                nagbar_type_free(type);
+                list_del(types, 0);
+        }
+        list_free(types);
+}
+
+int nagbar_parse_type(int argc, char **argv, struct sway_nagbar_type *type) {
+        enum color_option {
+                COLOR_BACKGROUND,
+                COLOR_BORDER,
+                COLOR_BORDER_BOTTOM,
+                COLOR_BUTTON,
+                COLOR_TEXT,
+        };
+
+        static struct option opts[] = {
+                {"background", required_argument, NULL, COLOR_BACKGROUND},
+                {"border", required_argument, NULL, COLOR_BORDER},
+                {"border-bottom", required_argument, NULL, COLOR_BORDER_BOTTOM},
+                {"button-background", required_argument, NULL, COLOR_BUTTON},
+                {"text", required_argument, NULL, COLOR_TEXT},
+                {0, 0, 0, 0}
+        };
+
+        optind = 1;
+        while (1) {
+                int c = getopt_long(argc, argv, "", opts, NULL);
+                if (c == -1) {
+                        break;
+                }
+                switch (c) {
+                        case COLOR_BACKGROUND:
+                                type->background = parse_color(optarg);
+                                break;
+                        case COLOR_BORDER:
+                                type->border = parse_color(optarg);
+                                break;
+                        case COLOR_BORDER_BOTTOM:
+                                type->border_bottom = parse_color(optarg);
+                                break;
+                        case COLOR_BUTTON:
+                                type->button_background = parse_color(optarg);
+                                break;
+                        case COLOR_TEXT:
+                                type->text = parse_color(optarg);
+                                break;
+                        default:
+                                break;
+                }
+        }
+        return 0;
+}
+