write last directory before quit

Makefile

@@ -14,7 +14,7 @@ MANDIR = $(PREFIX)/share/man/man1
 LDFLAGS = $(shell pkg-config --libs ncurses)
 CFLAGS = -march=native -mtune=native -O3 -pipe -s -std=c99 -pedantic $(shell pkg-config --cflags ncurses) -Wall # -Wextra -Werror
 
-SRC = ccc.c util.c file.c $(CONF)
+SRC = ccc.c util.c file.c
 
 $(TARGET): $(SRC)
 	$(CC) $(CFLAGS) $(LDFLAGS) $(SRC) -o $@

ccc.c

@@ -4,7 +4,6 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
-#include <linux/limits.h>
 #include <dirent.h>         /* directories etc. */
 #include <sys/stat.h>
 #include <errno.h>
@@ -25,6 +24,7 @@ long add_file_stat(char *filepath, int ftype);
 void highlight_current_line();
 void show_file_content();
 void edit_file();
+int write_last_d();
 void wpprintw(const char *line);
 void init_windows();
 void draw_border_title(WINDOW *window, bool active);
@@ -101,6 +101,10 @@ int main(int argc, char** argv)
         switch (ch) {
             /* quit */
             case 'q':
+                if (write_last_d() == -1) {
+                    /* prompt user so error message can be shown to user */
+                    getch();
+                }
                 endwin();
                 return 0;
 
@@ -294,7 +298,11 @@ int main(int argc, char** argv)
                 delwin(preview_content);
                 delwin(panel);
                 endwin();
+                half_width = COLS / 2;
                 init_windows();
+                refresh();
+                populate_files(cwd, 0);
+                highlight_current_line();
                 break;
             default:
                 break;
@@ -320,14 +328,13 @@ void change_dir(const char *buf, int selection)
 
 /*
  * Recursively create directory by creating each subdirectory
+ * like mkdir -p
  */
 int mkdir_p(const char *destdir)
 {
     char *path = memalloc(PATH_MAX * sizeof(char));
-    char *token = strtok(path, "/");
     char dir_path[PATH_MAX] = "";
 
-    strcpy(path, destdir);
     if (destdir[0] == '~') {
         char *home = getenv("HOME");
         if (home == NULL) {
@@ -335,13 +342,16 @@ int mkdir_p(const char *destdir)
             return -1;
         }
         /* replace ~ with home */
-        memmove(path + strlen(home), path + 1, strlen(path));
+        snprintf(path, PATH_MAX, "%s%s", home, destdir + 1);
-        memcpy(path, home, strlen(home));
+    } else {
-    }
+        strcpy(path, destdir);
+     }
+
     /* fix first / not appearing in the string */
     if (path[0] == '/')
         strcat(dir_path, "/");
 
+    char *token = strtok(path, "/");
     while (token != NULL) {
         strcat(dir_path, token);
         strcat(dir_path, "/");
@@ -675,6 +685,42 @@ void edit_file()
     }
 }
 
+int write_last_d() {
+    #ifdef LAST_D
+        char *last_d = memalloc(PATH_MAX * sizeof(char)); 
+        strcpy(last_d, LAST_D);
+    #else
+        char *last_d = getenv("CCC_LAST_D");
+    #endif
+    if (last_d == NULL) {
+        wpprintw("Cannot get CCC_LAST_D variable, is it defined?");
+        return -1;
+    } else {
+        char *last_ddup = memalloc(PATH_MAX * sizeof(char));
+        char *home = getenv("HOME");
+        if (home == NULL) {
+            wpprintw("$HOME is not defined");
+            return -1;
+        }
+        /* replace ~ with home */
+        snprintf(last_ddup, PATH_MAX, "%s%s", home, last_d + 1);
+
+        char *last_d_dir = strrchr(last_d, '/');
+        if (last_d_dir != NULL) {
+            *last_d_dir = '\0'; /* truncate string */
+        }
+        mkdir_p(last_d);
+        FILE *last_d_file = fopen(last_ddup, "w");
+        if (last_d_file == NULL) {
+            wpprintw("Cannot open last directory file");
+            return -1;
+        }
+        fwrite(cwd, strlen(cwd), sizeof(char), last_d_file);
+        fclose(last_d_file);
+    }
+    return 0;
+}
+
 /*
  * Print line to the panel
  */

config.h

@@ -1,6 +1,7 @@
 /* Settings */
 #define PH 1            /* panel height */
 #define JUMP_NUM 14     /* how long ctrl + u/d jump are */
+#define PATH_MAX 4096
 
 /* Calculate directories' sizes RECURSIVELY upon entering? */
 #define DIRS_SIZE false
@@ -25,6 +26,9 @@ In COLS:
 /* Default text editor */
 #define EDITOR "nvim"
 
+/* File location to write last directory */
+#define LAST_D "~/.cache/ccc/.ccc_d"
+
 /* Keybindings */
 #define CTRLD 0x04
 #define ENTER 0xA