Add support for playerctlrc file

playerctl/meson.build

@@ -26,6 +26,7 @@ playerctl_sources = [
   'playerctl-player.c',
   'playerctl-common.c',
   'playerctl-player-manager.c',
+  'playerctl-rc.c',
   playerctl_generated,
 ]
 

playerctl/playerctl-cli.c

@@ -30,6 +30,7 @@
 #include "playerctl-common.h"
 #include "playerctl-formatter.h"
 #include "playerctl-player-private.h"
+#include "playerctl-rc.h"
 
 #define LENGTH(array) (sizeof array / sizeof array[0])
 
@@ -815,7 +816,7 @@ static const GOptionEntry entries[] = {
     {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_STRING_ARRAY, &command_arg, NULL, "COMMAND"},
     {NULL}};
 
-static gboolean parse_setup_options(int argc, char *argv[], GError **error) {
+static gboolean parse_setup_options(int argc, char *argv[], char** rc_options, GError **error) {
     static const gchar *description =
         "Available Commands:"
         "\n  play                    Command the player to play"
@@ -851,6 +852,13 @@ static gboolean parse_setup_options(int argc, char *argv[], GError **error) {
     g_option_context_set_description(context, description);
     g_option_context_set_summary(context, summary);
 
+    success = g_option_context_parse_strv(context, &rc_options, error);
+
+    if (!success) {
+        g_option_context_free(context);
+        return FALSE;
+    }
+
     success = g_option_context_parse(context, &argc, &argv, error);
 
     if (!success) {
@@ -1166,7 +1174,9 @@ int main(int argc, char *argv[]) {
     // seems to be required to print unicode (see #8)
     setlocale(LC_CTYPE, "");
 
-    if (!parse_setup_options(argc, argv, &error)) {
+    char **rc_options = playerctl_rc_read_options();
+
+    if (!parse_setup_options(argc, argv, rc_options, &error)) {
         g_printerr("%s\n", error->message);
         g_clear_error(&error);
         exit(0);

playerctl/playerctl-rc.c

@@ -0,0 +1,116 @@
+/*
+ * This file is part of playerctl.
+ *
+ * playerctl is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * playerctl 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 Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with playerctl If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright © 2014, Tony Crisci and contributors.
+ */
+
+#include "playerctl/playerctl-rc.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static char **create_empty_options() {
+    char **options = (char**)malloc(sizeof(char*) * 2);
+    assert(options != NULL);
+
+    // Prepend empty to match argv size
+    options[0] = strdup("");
+    assert(options[0] != NULL);
+
+    // Null terminated array
+    options[1] = NULL;
+
+    return options;
+}
+
+static void trim(char **str) {
+    // Left trim
+    for (; **str == '\r' || **str == '\n' || **str == ' '; (*str)++);
+
+    // Right trim
+    for (char *end = *str + strlen(*str) - 1; end >= *str; end--) {
+        if (*end == '\r' || *end == '\n' || *end == ' ')
+            *end = '\0';
+        else
+            break;
+    }
+}
+
+static char **read_rc_file(const char* path) {
+    char **options = NULL;
+    int options_idx = 0;
+
+    FILE *rc_file;
+    if ((rc_file = fopen(path, "r")) != NULL) {
+        static int options_cap = 64;
+        options = (char**)malloc(sizeof(char*) * options_cap);
+        assert(options != NULL);
+
+        // Prepend empty to match argv size
+        options[options_idx] = strdup("");
+        assert(options[options_idx] != NULL);
+        options_idx++;
+
+        static int buf_size = 1024;
+        char line[buf_size];
+        while (fgets(line, buf_size, rc_file) != NULL && options_idx < options_cap - 1) {
+            char* context = NULL;
+            char* token = strtok_r(line, " ", &context);
+            while (token != NULL) {
+                trim(&token);
+                if (strlen(token) > 0) {
+                    options[options_idx] = strdup(token);
+                    assert(options[options_idx] != NULL);
+
+                    if (++options_idx == options_cap - 1)
+                        break;
+                }
+                token = strtok_r(NULL, " ", &context);
+            }
+        }
+
+        // Null terminated array
+        options[options_idx] = NULL;
+    }
+
+    return options;
+}
+
+char **playerctl_rc_read_options() {
+    char **options = NULL;
+    char *homedir = getenv("HOME");
+
+    if (homedir != NULL) {
+        static char rc_file_name[] = "/.playerctlrc";
+
+        char path[strlen(homedir) + strlen(rc_file_name) + 1];
+        sprintf(path, "%s%s", homedir, rc_file_name);
+
+        options = read_rc_file(path);
+    }
+
+    if (options == NULL) {
+        options = read_rc_file("/etc/playerctlrc");
+    }
+
+    if (options == NULL) {
+        options = create_empty_options();
+    }
+
+    return options;
+}

playerctl/playerctl-rc.h

@@ -0,0 +1,25 @@
+/*
+ * This file is part of playerctl.
+ *
+ * playerctl is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * playerctl 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 Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with playerctl If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright © 2022, Tony Crisci and contributors
+ */
+
+#ifndef __PLAYERCTL_RC_H__
+#define __PLAYERCTL_RC_H__
+
+char **playerctl_rc_read_options();
+
+#endif /* __PLAYERCTL_RC_H__ */