create default config file on first launch #373

create a hex dump of example config file with xxd in autogenerate.sh
use this to create a default config file in home dir on first launch
if no file is found.

this only applies if the path to config file is not specified

Author: karlstav

.gitignore

@@ -23,3 +23,4 @@ ltmain.sh
 m4/
 missing
 version
+config_file.h

autogen.sh

@@ -11,9 +11,4 @@ aclocal
 autoconf
 automake --add-missing
 
-CONFIGDIR=$XDG_CONFIG_HOME/cava
-
-if [ -z "$XDG_CONFIG_HOME" ]; then CONFIGDIR=$HOME/.config/cava; fi
-
-mkdir -p "$CONFIGDIR"
-[ -f "$CONFIGDIR"/config ] || cp example_files/config "$CONFIGDIR"/config
+xxd -i example_files/config config_file.h # make a hex dump of default config file to be generated in home dir on first launch

config.c

@@ -1,4 +1,5 @@
 #include "config.h"
+#include "config_file.h"
 #include "util.h"
 
 #include <ctype.h>
@@ -407,6 +408,11 @@ bool load_config(char configPath[PATH_MAX], struct config_params *p, bool colors
         // open file or create file if it does not exist
         fp = fopen(configPath, "ab+");
         if (fp) {
+            fseek(fp, 0, SEEK_END);
+            if (ftell(fp) == 0) {
+                printf("config file is empty, creating default config file\n");
+                fwrite(example_files_config, example_files_config_len, sizeof(unsigned char), fp);
+            }
             fclose(fp);
         } else {
             // try to open file read only