delta time no longer reloading images

Makefile

@@ -3,6 +3,7 @@ CFLAGS := -Wall -Wextra -O2 -flto=auto
 CURSES := -lncursesw -ltinfow #utf8 support
 #CURSES := -lncurses -tinfo #no utf8
 CFLAGS_DEBUG := $(CFLAGS) -g
+CFLAGS_PROFILE := $(CFLAGS) -pg
 GDB := gdb --tui ./th
 VALGRIND := valgrind --leak-check=full --track-origins=yes --show-leak-kinds=all --log-fd=9 9>>valgrind.log ./th
 HELGRIND := valgrind --tool=helgrind --log-fd=9 9>>helgrind.log ./th
@@ -15,6 +16,9 @@ d:
 	$(CC) ./main.c -o th -std=c89 $(CFLAGS_DEBUG) $(CURSES)
 	$(GDB)
 
+p:
+	$(CC) ./main.c -o th -std=c89 $(CFLAGS_PROFILE) $(CURSES)
+
 v:
 	$(CC) ./main.c -o th -std=c89 $(CFLAGS_DEBUG) $(CURSES)
 	$(VALGRIND)

backend.c

@@ -1,3 +1,6 @@
+#include <stdlib.h>
+#include <string.h>
+
 char* concat(const char *s1, const char *s2){
     const size_t len1 = strlen(s1);
     const size_t len2 = strlen(s2);
@@ -6,5 +9,46 @@ char* concat(const char *s1, const char *s2){
     memcpy(result + len1, s2, len2 + 1);
     return result;
 }
+char* smartstrcasestr(char *haystack, const char *needle){
+	char smart = 0;
+	char *ret;
+	char passes = 0;
+	while (*needle) {
+		if (*needle >= 'A' && *needle <= 'Z') {
+			smart = 1;
+			break;
+		}
+		passes++;
+		needle++;
+	}
+	needle -= passes;
+	if (smart == 0) {
+		char *needle_case = malloc(strlen(needle)+1);
+		strcpy(needle_case, needle);
+		passes = 0;
+		while (*needle_case) {
+			*needle_case = *needle_case | ' ';
+			needle_case++;
+			passes++;
+		}
+		needle_case -= passes;
 
+		char *haystack_case = malloc(strlen(haystack)+1);
+		strcpy(haystack_case, haystack);
+		passes = 0;
+		while (*haystack_case) {
+			*haystack_case = *haystack_case | ' ';
+			haystack_case++;
+			passes++;
+		}
+		haystack_case -= passes;
+
+		ret = strstr(haystack_case, needle_case);
+		free(needle_case);
+		free(haystack_case);
+	} else {
+		ret = strstr(haystack, needle);
+	}
+	return ret;
+}
 

backend.h

@@ -6,3 +6,4 @@
 
 
 char* concat(const char *s1, const char *s2);
+char* smartstrcasestr(char *haystack, const char *needle);

config.h

@@ -1,10 +1,14 @@
+#define SETTINGS_LINE_NUMBERS 2			/* 0 is disabled, 1 is enabled, 2 is relative */
+#define SETTINGS_UEBERZUG_IMAGE_PREVIEW 1	/* 0 is disabled, 1 is enabled, 2 is with caching */
+#define SETTINGS_RELOAD_DIR_DELTA 10		/* 0 is disabled, time in seconds of how often the directory should be reload */
+
+/* {{{ */
 #ifndef CONFIG_GUARD
 #define CONFIG_GUARD
 #include "defines.h"
 #include "sorting.h"
 #include "interactions.h"
-
+/* }}} */
-#define SETTINGS_LINE_NUMBERS 2 /* 0 is disabled, 1 is enabled, 2 is relative */
 
 static const mimetype mimetype_default_cmd[] = {
 	/* mimetype	shell command
@@ -40,9 +44,13 @@ static const binding key_binding[] = {
 	/* blackmagic holds a modifier of an action, either as string or as function pointer depending on the action */
 	{ "q",		quit_program,		NULL,			"quit"				},
 	{ " ",		toggle_selection,	NULL,			"toggle file selection"		}, /* on hovered file/directory */
+	{ "v",		select_all,		NULL,			"select all files in dir"	},
 	{ "e",		update,			NULL,			"rerun all backend"		}, /* executes the entire backend and redrawing of the screen */
 	{ "B",		enter_shell,		"$SHELL",		"enter $SHELL shell"		},
-	{ "/",		not_implemented,	NULL,			"search"			}, 
+	{ "/",		search,			NULL,			"search"			}, 
+	{ ":",		jmp_file_index,		NULL,			"jump to file on input number"	},
+	{ "l",		search_next,		NULL,			"search next"			}, 
+	{ "L",		search_previous,	NULL,			"search previous"		}, 
 
 	{ "h",		move_left,		NULL,			"move left"			}, /* moves one dir up */
 	{ "t",		move_down,		NULL,			"move down"			},
@@ -53,6 +61,8 @@ static const binding key_binding[] = {
 	{ "r",		rename_hovered,		NULL,			"rename hovered file"		}, /* renames currently hovered file/directory */
 	{ "dD",		delete,			NULL,			"delete file"			}, /* deletes currently hovered OR selected file/directory
 													 * this means that it does not delete the hovered files if files are already selected */
+	{ "yn",		yank_text,		"name",			"yank filename of hovered file"	},
+	{ "yp",		yank_text,		"path",			"yank path of hovered file"	},
 	{ "yy",		yank_file,		"copy",			"copy/yank file/directory"	}, 
 	{ "dd",		yank_file,		"cut",			"cut file/directory"		}, 
 	{ "pp",		paste,			NULL,			"paste"				},
@@ -60,10 +70,14 @@ static const binding key_binding[] = {
 	{ "G",		jump_bottom,		NULL,			"jump to last file in dir"	},
 	{ "gg",		jump_top,		NULL,			"jump to first file in dir"	},
 	{ "gh",		jump_to_dir,		"$HOME",		"jump to $HOME"			},
-	{ "gs",		jump_to_dir,		"$START_PATH",		"jump to $START_PATH"		},
+	{ "gs",		jump_to_dir,		"$START_PATH",		"jump to $START_PATH"		}, /* the path you started th in */
 	{ "gD",		jump_to_dir,		"$HOME/Downloads",	"jump to $HOME/Downloads"	},
+	{ "gC",		jump_to_dir,		"$HOME/Documents",	"jump to $HOME/Documents"	},
+	{ "gP",		jump_to_dir,		"$HOME/Pictures",	"jump to $HOME/Pictures"	},
+	{ "gM",		jump_to_dir,		"$HOME/Music",		"jump to $HOME/Music"		},
 	{ "gd",		jump_to_dir,		"/dev",			"jump to /dev"			},
 	{ "ge",		jump_to_dir,		"/etc",			"jump to /etc"			},
+	{ "gp",		jump_to_dir,		"/etc/portage",		"jump to /etc/portage"		},
 	{ "gm",		jump_to_dir,		"/mnt",			"jump to /mnt"			},
 	{ "go",		jump_to_dir,		"/opt",			"jump to /opt"			},
 	{ "gt",		jump_to_dir,		"/tmp",			"jump to /tmp"			},
@@ -77,11 +91,10 @@ static const binding key_binding[] = {
 	{ "uz",		cmd_on_selected,	"unzip ",		"unzip zip"			},
 
 	{ "on",		order_by,		sort_natural,		"order natural"			},
-	{ "or",		not_implemented,	"",			"order reverse"			},
+	{ "oe",		order_by,		sort_extension,		"order extension"		},
-	{ "oe",		not_implemented,	"",			"order extension"		},
 	{ "os",		order_by,		sort_size,		"order size"			},
 	{ "ot",		order_by,		sort_type,		"order type"			},
-	{ "oz",		order_by,		sort_random,		"order random"			},
+	{ "or",		order_by,		sort_random,		"order random"			},
 	{ "oa",		order_by,		sort_alpha,		"order alphabetically"		},
 
 	{ "mk",		makedir,		NULL,			"create directory"		},
@@ -90,15 +103,27 @@ static const binding key_binding[] = {
 	{ "a",		toggle_hidden_files,	NULL,			"toggle hidden files"		},
 	{ "\x7F",	toggle_hidden_files,	NULL,			"toggle hidden files"		}, /* backspace key */
 };
+
+static const char size_unit[] = { 'B', 'K', 'M', 'G', 'T', 'P' }; /* this defines the maximum size unit, deleting everything except B results in all sizes being displayed in byte */
+
+static const char clipboard_cmd[] = "xsel -ib --trim"; /* assembles the following shell cmd: echo "hovered_file" | clipboard_cmd */
+static const char ui_btm_text_storage_left[] = "total free";
+static const char ui_btm_current_dir_size[] = "sum of dir,";
+
+/* {{{ */
 static const unsigned long binding_count = sizeof(key_binding) / sizeof(binding);
 static const unsigned long mimetype_default_count = sizeof(mimetype_default_cmd) / sizeof(mimetype);
 static const unsigned long file_extension_default_count = sizeof(file_extension_default_cmd) / sizeof(extension);
+static const char size_unit_count = (sizeof(size_unit) / sizeof(size_unit[0])) - 1;
 #else
+static const char clipboard_cmd[];
 static const mimetype mimetype_default_cmd[];
 static const extension file_extension_default_cmd[];
 static const binding key_binding[];
 static const unsigned long binding_count;
 static const unsigned long mimetype_default_count;
 static const unsigned long file_extension_default_count;
+static const char size_unit[];
+static const char size_unit_count;
 #endif
-
+/* }}} */

defines.h

@@ -9,6 +9,7 @@
 #define STATUS_UPDATE_SCREEN_RELOAD_FULL 32
 #define STATUS_USER_ROOT 64
 #define STATUS_INPUT_MATCH 128
+#define STATUS_DELTA_TIME 256
 
 #define SETTINGS_HAS_COLOR 1
 
@@ -25,8 +26,7 @@
 #define FILE_STATUS_HOVER 1
 #define FILE_STATUS_SELECTED 2
 #define FILE_STATUS_IS_REGULAR_FILE 4
-#define FILE_STATUS_DIR_EMPTY 64 /* if a directory is empty */
+#define FILE_STATUS_FILE_OPEN 64 /* only used for file previews */
-#define FILE_STATUS_FILE_OPEN 128 /* only used for file previews */
 
 #define COLOR_UNKNOWN 0
 #define COLOR_DIR 1
@@ -40,16 +40,16 @@
 #define COLOR_ORPHAN 9
 #define COLOR_PATH 10
 
-#define FILE_TYPE_UNKNOWN COLOR_UNKNOWN
+#define FILE_TYPE_UNKNOWN 0
-#define FILE_TYPE_DIR COLOR_DIR
+#define FILE_TYPE_EXEC 1
-#define FILE_TYPE_EXEC COLOR_EXEC
+#define FILE_TYPE_REGULAR 2
-#define FILE_TYPE_REGULAR COLOR_REGULAR
+#define FILE_TYPE_BLOCK 3
-#define FILE_TYPE_SYMLINK COLOR_SYMLINK
+#define FILE_TYPE_CHARDEV 4
-#define FILE_TYPE_BLOCK COLOR_BLOCK
+#define FILE_TYPE_SOCK 5
-#define FILE_TYPE_CHARDEV COLOR_CHARDEV
+#define FILE_TYPE_FIFO 6
-#define FILE_TYPE_SOCK COLOR_SOCK
+#define FILE_TYPE_ORPHAN 7
-#define FILE_TYPE_FIFO COLOR_FIFO
+#define FILE_TYPE_DIR 32
-#define FILE_TYPE_ORPHAN COLOR_ORPHAN
+#define FILE_TYPE_SYMLINK 64
 #define FILE_TYPE_OPEN_FILE 128 /* this is only used in rgt_content to print a file preview, not the dir */
 
 #define YANK_IS_USED 1
@@ -91,4 +91,10 @@ typedef struct Yank {
 	char **list;
 	unsigned long count;
 } yank;
+typedef struct Linked_dir {
+	char *path;
+	unsigned long selected_file_current;
+	struct Linked_dir *next;
+} linked_dir;
+
 #endif

dir.c

@@ -5,19 +5,25 @@
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 #include "sorting.h"
 #include "defines.h"
 #include "config.h"
 
 
+extern file *mid_content;
+extern unsigned long mid_file_count;
 extern unsigned int settings;
 extern unsigned int file_modifiers;
 extern unsigned int color_count;
 extern unsigned int terminal_height;
 extern volatile unsigned long selected_file_current;
+extern volatile unsigned long selected_file_last;
 extern color *colors;
 int (*order_func)() = sort_natural;
+linked_dir *visited_dirs;
+linked_dir *current_dir;
 
 unsigned long get_dir_size(char *path);
 void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_content);
@@ -28,29 +34,31 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 unsigned long get_dir_size(char *path){
 	DIR *dir = opendir(path);
 	unsigned long entry_count = 0;
-	if (dir) {
+	struct dirent *entry;
-		struct dirent *entry;
+	if (dir && file_modifiers & FILE_MODIFIERS_HIDDEN_FILES) {
 		while ((entry=readdir(dir))) { 
-			if (entry->d_name[0] != '.' || (file_modifiers & FILE_MODIFIERS_HIDDEN_FILES)) {
+			entry_count++;
+		}
+		/* removes files "." and ".." */
+		entry_count -= 2;
+	} else if (dir) {
+		while ((entry=readdir(dir))) { 
+			if (entry->d_name[0] != '.') {
 				entry_count++;
 			} 
 		}
-	}	
-	closedir(dir);
-	if (file_modifiers & FILE_MODIFIERS_HIDDEN_FILES) {
-		/* removes files "." and ".." */
-		entry_count -= 2;
 	}
+	closedir(dir);
 	return entry_count;
 
 }
 
 void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_content){
-	struct dirent **entry;
+	struct dirent **entry = NULL;
 	if (file_modifiers & FILE_MODIFIERS_HIDDEN_FILES) { /* print hidden files */
-		scandir(path, &entry, skip_dot, alphasort);
+		scandir(path, &entry, skip_dot, NULL);
 	} else {
-		scandir(path, &entry, skip_hidden_files, alphasort);
+		scandir(path, &entry, skip_hidden_files, NULL);
 	}
 	
 	unsigned long i = 0;
@@ -59,24 +67,20 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 		} else {
 			dir_content[i].file_name = malloc(strlen(entry[i]->d_name)+1);
 			strcpy(dir_content[i].file_name, entry[i]->d_name);
-			dir_content[i].file_name[strlen(entry[i]->d_name)] = '\0';
 
 			
 			struct stat *file;
 			file = malloc(sizeof(struct stat));
-			memset(file, ' ', sizeof(struct stat));
 
 			/* using the full path allows using the same function for all windows */
-			unsigned long path_len = strlen(path);
 			char *full_path = malloc(strlen(path) + strlen(entry[i]->d_name) + 1 + sizeof("/"));
 			memcpy(full_path, path, strlen(path));
-			memcpy(full_path + path_len, "/", sizeof("/"));
+			memcpy(full_path + strlen(path) + sizeof("/") - 1, entry[i]->d_name, strlen(entry[i]->d_name) + 1);
-			memcpy(full_path + path_len + sizeof("/") - 1, entry[i]->d_name, strlen(entry[i]->d_name) + 1);
+			full_path[strlen(path)] = '/';
 
 			lstat(full_path, file);
 
 			dir_content[i].file_size = file->st_size;
-			dir_content[i].permissions = 1;
 			dir_content[i].permissions = file->st_mode;
 
 			if (S_ISDIR(file->st_mode)) {
@@ -84,12 +88,30 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 				dir_content[i].color_pair = COLOR_DIR;
 				dir_content[i].file_size = get_dir_size(full_path);
 			} else if (S_ISLNK(file->st_mode)) {
-				dir_content[i].file_type = FILE_TYPE_SYMLINK;
+				stat(full_path, file);
-				dir_content[i].color_pair = COLOR_SYMLINK;
+				if (S_ISDIR(file->st_mode)) {
-				dir_content[i].file_size = get_dir_size(full_path);
+					dir_content[i].file_type = FILE_TYPE_DIR | FILE_TYPE_SYMLINK;
+					dir_content[i].color_pair = COLOR_SYMLINK;
+					dir_content[i].file_size = get_dir_size(full_path);
+				} else {
+					dir_content[i].file_type =  FILE_TYPE_REGULAR | FILE_TYPE_SYMLINK;
+					dir_content[i].color_pair = COLOR_SYMLINK;
+				}
 			} else if (file->st_mode & S_IXUSR) {
 				dir_content[i].file_type = FILE_TYPE_EXEC;
 				dir_content[i].color_pair = COLOR_EXEC;
+			} else if (S_ISREG(file->st_mode)) {
+				dir_content[i].file_type = FILE_TYPE_REGULAR;
+				dir_content[i].color_pair = COLOR_REGULAR;
+				unsigned long j = 0;
+				char *extension = strrchr(entry[i]->d_name, '.');
+				if (extension) {
+					for (j = 0; j < color_count; j++) {
+						if (!strncmp(colors[j].file_extension, extension, strlen(colors[j].file_extension))) {
+							dir_content[i].color_pair = colors[j].color_pair;
+						}
+					}
+				} 
 			} else if (S_ISBLK(file->st_mode)) {
 				dir_content[i].file_type = FILE_TYPE_BLOCK;
 				dir_content[i].color_pair = COLOR_BLOCK;
@@ -101,19 +123,6 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 			} else if (S_ISSOCK(file->st_mode)) {
 				dir_content[i].file_type = FILE_TYPE_SOCK;
 				dir_content[i].color_pair = COLOR_SOCK;
-			} else if (S_ISREG(file->st_mode)) {
-				dir_content[i].file_type = FILE_TYPE_REGULAR;
-				dir_content[i].color_pair = COLOR_REGULAR;
-				unsigned long j = 0;
-				char *extension = strrchr(entry[i]->d_name, '.');
-				if (extension) {
-					for (j = 0; j < color_count; j++) {
-						if (!strcmp(colors[j].file_extension, extension)) {
-							dir_content[i].color_pair = colors[j].color_pair;
-						}
-					}
-				} else {
-				}
 			} else {
 				dir_content[i].file_type = COLOR_REGULAR;
 				dir_content[i].color_pair = COLOR_REGULAR;
@@ -121,7 +130,7 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 				char *extension = strrchr(entry[i]->d_name, '.');
 				if (extension) {
 					for (j = 0; j < color_count; j++) {
-						if (!strcmp(colors[j].file_extension, extension)) {
+						if (!strncmp(colors[j].file_extension, extension, strlen(colors[j].file_extension))) {
 							dir_content[i].color_pair = colors[j].color_pair;
 						}
 					}
@@ -138,7 +147,10 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 	for (i = 0; i < *dir_file_count; i++) {
 		free(entry[i]);
 	}
-	free(entry);
+	if (entry != NULL) {
+		free(entry);
+	} else {
+	}
 
 }
 
@@ -155,17 +167,16 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 	float printed_size = 0;
 	char size_char = ' ';
 	char is_selected = 0;
-	static const char sizes[6] = { 'B', 'K', 'M', 'G', 'T', 'P' };
 
 	unsigned long offset_vertical = 0;
 	unsigned long offset_back = 0;
 	#if SETTINGS_LINE_NUMBERS == 0
 	unsigned long offset_front = 0;
 	#else
-	unsigned long offset_front = 2;
+	long offset_front = 2;
 	#endif
 
-	unsigned long offset_index = 2; /* only used for the index of the file itself */
+	long offset_index = 2; /* only used for the index of the file itself */
 	if (print_info) {
 		if (*dir_file_count > 9) {
 
@@ -184,29 +195,33 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 				offset_vertical = selected_file_current - (terminal_height/3)*2;
 			}
 		}
+	} else {
+		offset_front = 0;
 	}
 	for (i = offset_vertical; i < *dir_file_count && i < (terminal_height + offset_vertical); i++) {
 
+
+
 		if (print_info) {
 			file_size = dir_content[i].file_size;
-			char size_index = 0;
+			char size_index = -1;
-			while (file_size > 1) {
+
+			do {
 				printed_size=file_size;
 				file_size /= 1024;
 				size_index++;
-				if (size_index >= 6) {
+			} while (file_size > 1 && size_index < size_unit_count);
-					break;
+			size_char = size_unit[(unsigned)size_index];
-				}
+
-			}
+			if (dir_content[i].file_type &= FILE_TYPE_DIR) {
-			size_char = sizes[size_index-1];
-			if (dir_content[i].file_type == FILE_TYPE_DIR || dir_content[i].file_type == FILE_TYPE_SYMLINK) {
 				offset_back = line_width - (snprintf(NULL,0,"%ld", dir_content[i].file_size) + 1);
 			} else if (size_char =='B') {
 				offset_back = line_width - (snprintf(NULL,0,"%0.0lf %c", printed_size, size_char) + 1);
 			} else {
 				offset_back = line_width - (snprintf(NULL,0,"%0.2lf %c", printed_size, size_char) + 1);
 			}
-
+		} else { 
+			offset_back = line_width;
 		}
 
 		if (dir_content[i].status & FILE_STATUS_SELECTED) {
@@ -214,7 +229,6 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 		} else {
 			is_selected = 0;
 		}
-
 		if (dir_content[i].status & FILE_STATUS_SELECTED) {
 			wattron(win, COLOR_PAIR(8));
 		} else {
@@ -222,47 +236,46 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 		}
 		if (dir_content[i].status & FILE_STATUS_HOVER) {
 			wattron(win, A_REVERSE);
+		} else {
+			wattroff(win, A_REVERSE);
 		}
 
+
+
 		/* shortens the printed file name if it is too long
 		 * example input: aaaaaaaa.txt
-		 * example output: aaa~.txt 
+		 * example output: aaa~.txt
 		 * if no extension is found, the name will truncate */
-		char *file_name;
+		char *file_name = NULL;
-		unsigned long file_name_width = strlen(dir_content[i].file_name);
+		unsigned long printable_size = (offset_back - is_selected - offset_front);
-		if ((file_name_width + offset_front + is_selected) > offset_back - 1) {
+		if (strlen(dir_content[i].file_name) > printable_size) {
 			char *extension = strrchr(dir_content[i].file_name, '.');
-			if (extension) {
+			if (extension && extension != dir_content[i].file_name) {
-				int char_offset = (file_name_width + offset_front + is_selected) - (offset_back - 1) ;
+				file_name = malloc(printable_size);
-				if ((file_name_width - char_offset - strlen(extension) - 1) > 1) {
+				printable_size -= strlen(extension);
-					file_name = malloc(file_name_width - char_offset + 1);
-					memcpy(file_name, dir_content[i].file_name, file_name_width - char_offset);
-					memcpy(file_name + (file_name_width - char_offset - strlen(extension)), extension, strlen(extension));
-					file_name[file_name_width - char_offset - strlen(extension) - 1] = '~';
-					file_name[file_name_width - char_offset] = '\0';
-				} else {
-					file_name = malloc(strlen(extension)+1);
-					file_name[0] = '~';
-					memcpy(file_name+1, extension, strlen(extension));
-					file_name[strlen(extension)] = '\0';
-				}
-			} else {
-			file_name = malloc(file_name_width+1);
-			memcpy(file_name, dir_content[i].file_name, file_name_width);
-			file_name[file_name_width] = '\0';
-			}
 
+				memcpy(file_name, dir_content[i].file_name, printable_size);
+				memcpy(file_name + printable_size-1, extension, strlen(extension));
+				file_name[printable_size + strlen(extension)-1] = '\0';
+				file_name[printable_size - 2] = '~';
+			} else {
+				file_name = malloc(printable_size-1);
+				memcpy(file_name, dir_content[i].file_name, printable_size);
+				file_name[printable_size-2] = '~';
+				file_name[printable_size-1] = '\0';
+			}
 		} else {
-			file_name = malloc(file_name_width+1);
+			file_name = malloc(strlen(dir_content[i].file_name)+1);
-			memcpy(file_name, dir_content[i].file_name, file_name_width);
+			memcpy(file_name, dir_content[i].file_name, strlen(dir_content[i].file_name)+1);
-			file_name[file_name_width] = '\0';
 		}
 
+
+
 		mvwaddstr(win, i-offset_vertical, 0, bg);
 		if(print_info) {
 			#if SETTINGS_LINE_NUMBERS == 2
 			long i_ = (selected_file_current) - i;
-			offset_index = !((selected_file_current) - i);
+			offset_index = 0;
 			while(i_) {
 				offset_index++;
 				i_ /= 10;
@@ -270,6 +283,13 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 			long relative_index = selected_file_current - i;
 			if (relative_index < 0) {
 				relative_index = relative_index * -1;
+			} else if (relative_index == 0) {
+				i_ = (selected_file_current != 0) ? (selected_file_current) : 1;
+				while(i_) {
+					offset_index++;
+					i_ /= 10;
+				}
+				relative_index = i;
 			}
 			mvwprintw(win, i-offset_vertical, offset_front-offset_index-1, "%ld", relative_index);
 
@@ -284,9 +304,8 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 			#endif
 
 			mvwaddnstr(win, i-offset_vertical, offset_front+is_selected, file_name, line_width-offset_front-is_selected-2);
-			free(file_name);
 
-			if (dir_content[i].file_type == FILE_TYPE_DIR || dir_content[i].file_type == FILE_TYPE_SYMLINK) {
+			if (dir_content[i].file_type &= FILE_TYPE_DIR) {
 				mvwprintw(win, i-offset_vertical, offset_back, "%ld", dir_content[i].file_size);
 			}else if (size_char =='B') {
 				mvwprintw(win, i-offset_vertical, offset_back, "%0.0lf %c", printed_size, size_char);
@@ -295,11 +314,14 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 			}
 		} else {
 			mvwaddnstr(win, i-offset_vertical, 0, file_name, line_width);
-			free(file_name);
 		}
-
+		if (file_name != NULL) {
-		if (dir_content[i].status & FILE_STATUS_HOVER) {
+			/* sometimes NULL remains, need to do deeper analysis soon */
-			wattroff(win, A_REVERSE);
+			free(file_name);
+		} else {
+			printf("file_name remains NULL on %s, if this happens consistent on the same file, please inform me", dir_content[i].file_name);
+			volatile static int debug_print_dir;
+			debug_print_dir++;
 		}
 		if (dir_content[i].status & FILE_STATUS_SELECTED) {
 			wattroff(win, COLOR_PAIR(8));
@@ -311,3 +333,90 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 	free(bg);
 }
 
+char update_selected_file(){
+	char ret = -1; /* -1 on empty or inaccessible file, 0 on unchanged file, 1 on changed file */
+	if (mid_content->file_name[0] == '\0') { /* only happens if the current path is either empty or inaccessible */
+		return ret;
+	}
+	if (selected_file_current >= mid_file_count) {
+		selected_file_current = mid_file_count-1;
+	}
+	if (selected_file_current != selected_file_last) {
+		mid_content[selected_file_last].status &= ~FILE_STATUS_HOVER;
+		ret = 1;
+	} else {
+		ret = 0;
+	}
+	mid_content[selected_file_current].status |= FILE_STATUS_HOVER;
+	selected_file_last = selected_file_current;
+	return ret;
+}
+void dir_set_selected_file_current(unsigned long selected_file_current){
+	if (mid_content->file_name[0] != '\0') {
+		current_dir->selected_file_current = selected_file_current;
+	}
+}
+
+unsigned long dir_get_selected_file_current(){
+
+	current_dir = visited_dirs;
+	if (mid_content->file_name[0] == '\0') {
+		return 0;
+	}
+	char hit = 0;
+	char *path = getcwd(NULL, 0);
+	while(current_dir->next != NULL) {
+		if (strcmp(path, current_dir->path) == 0) {
+			hit = 1;
+			break;
+		}
+		current_dir = current_dir->next;
+	}
+	if (hit == 0) {
+		current_dir->next = malloc(sizeof(linked_dir));
+		current_dir->next->next = NULL;
+		current_dir->next->path = path;
+		return 0;
+	} else {
+		free(path);
+		return current_dir->selected_file_current;
+	}
+}
+void dir_init(){
+	visited_dirs = malloc(sizeof(linked_dir));
+	visited_dirs->path = getcwd(NULL, 0);
+	visited_dirs->selected_file_current = 0;
+	visited_dirs->next = NULL;
+	current_dir = visited_dirs;
+
+}
+
+void recursive_delete(file current_file){
+	if (current_file.file_type & FILE_TYPE_DIR) {
+		unsigned int file_modifiers_tmp = file_modifiers;
+		file_modifiers |= FILE_MODIFIERS_HIDDEN_FILES;
+		unsigned long current_file_count = get_dir_size(current_file.file_name);
+		if (current_file_count != 0) {
+			file *current_dir = malloc(current_file_count * sizeof(file));
+			memset(current_dir, '\0', current_file_count * sizeof(file));
+			get_dir_content(current_file.file_name, &current_file_count, current_dir);
+			if (chdir(current_file.file_name) != 0) {
+				return;
+			}
+			unsigned long i;
+			for (i = 0; i < current_file_count; i++) {
+				recursive_delete(current_dir[i]);
+				free(current_dir[i].file_name);
+			}
+			free(current_dir);
+			if (chdir("..") != 0) {
+				return;
+			}
+		}
+		remove(current_file.file_name);
+		file_modifiers = file_modifiers_tmp;
+		
+	} else {
+		remove(current_file.file_name);
+	}
+}

dir.h

@@ -3,6 +3,11 @@
 #include "dir.c"
 #endif
 
-extern unsigned long get_dir_size(char *path);
+unsigned long get_dir_size(char *path);
-extern void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_content);
+void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_content);
-extern void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file *dir_content);
+void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file *dir_content);
+char update_selected_file();
+void dir_set_selected_file_current(unsigned long selected_file_current);
+unsigned long dir_get_selected_file_current();
+void dir_init();
+void recursive_delete(file current_file);

file_previews.c

@@ -1,9 +1,14 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "backend.h"
 
+#include "backend.h"
+#include "defines.h"
+#include "config.h"
+
+#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
 static FILE *ueberzug = NULL;
+#endif
 extern unsigned int terminal_height;
 extern unsigned int terminal_width;
 char previewd;
@@ -44,17 +49,20 @@ char* preview_file(char *file_name, unsigned long file_size){
 
 	char *mime = get_mimetype(file_name);
 
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+	images_clear();
+	#endif
+
 	if (strstr(mime, "text")) {
 		file_buffer = text(file_name, &file_size);
-	} else {
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+	} else if (strstr(mime, "image")) {
 		file_buffer = generic(file_name);
-	}
-
-	if (strstr(mime, "image")) {
 		images_print(file_name);
 		previewd = 1;
-	} else {
+	#endif
-		images_clear();
+	} else  {
+		file_buffer = generic(file_name);
 	}
 
 	free(mime);
@@ -63,37 +71,19 @@ char* preview_file(char *file_name, unsigned long file_size){
 }
 char* text(char *path, unsigned long *file_size){
 
-	char *file_buffer = malloc(*file_size + 1);
+	unsigned long size = (terminal_width/2) * terminal_height;
+	if (size > *file_size) {
+		size = *file_size;
+	}
+	char *file_buffer = malloc(size + 1);
 	FILE *fp = fopen(path, "r");
-	if (fread(file_buffer, *file_size, 1, fp) != 0) {
+	if (fread(file_buffer, size, 1, fp) != 0) {
-		file_buffer[*file_size] = '\0';
+		file_buffer[size] = '\0';
 		return file_buffer;
 	} else {
 		return "failed reading file";
 	}
 }
-void images_clear() {
-	if (previewd == 1) {
-		fprintf(ueberzug, "{\"action\": \"remove\",  \
-				\"identifier\": \"preview\"}\n");
-		fflush(ueberzug);
-		previewd = 0;
-	}
-}
-void images_print(char *file_name) {
-	char *path=getcwd(NULL, 0);
-	fprintf(ueberzug, "{\"action\": \"remove\",  \
-			\"identifier\": \"preview\"}\n");
-	fprintf(ueberzug, "{\"action\":\"add\", \
-			\"identifier\":\"preview\", \
-			\"max_height\":%d, \
-			\"max_width\":%d, \
-			\"y\":0, \
-			\"x\":%d, \
-			\"path\":\"%s/%s\"}\n", terminal_height, terminal_width/2, terminal_width/2, path, file_name);
-	fflush(ueberzug);
-	free(path);
-}
 char* generic(char *path){
 	char *cmd = concat("file ./\"", path);
 	cmd = concat(cmd, "\"");
@@ -109,6 +99,38 @@ char* generic(char *path){
 		return "failed executing shell command \"file\"";
 	}
 }
-void ueberzug_init(){
+#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
-	ueberzug = popen("ueberzug layer -s ", "w");
+void images_clear(){
+	if (previewd == 1) {
+		fprintf(ueberzug, "{\"action\": \"remove\",  \
+				\"identifier\": \"preview\"}\n");
+		fflush(ueberzug);
+		previewd = 0;
+	}
 }
+void images_print(char *file_name){
+	char *path=getcwd(NULL, 0);
+
+	fprintf(ueberzug, "{\"action\":\"add\", \
+			\"identifier\":\"preview\", \
+			\"max_height\":%d, \
+			\"max_width\":%d, \
+			\"y\":0, \
+			\"x\":%d, \
+			\"path\":\"%s/%s\"}\n", terminal_height, terminal_width/2, terminal_width/2, path, file_name);
+	fflush(ueberzug);
+	free(path);
+}
+void ueberzug_init(){
+
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW == 2
+	ueberzug = popen("ueberzug layer -s ", "w");
+	#elif SETTINGS_UEBERZUG_IMAGE_PREVIEW == 1
+	ueberzug = popen("ueberzug layer -s --no-cache ", "w");
+	#endif
+}
+void ueberzug_close(){
+	images_clear();
+	pclose(ueberzug);
+}
+#endif

file_previews.h

@@ -1,9 +1,13 @@
 #ifndef PREVIEW_GUARD
 #define PREVIEW_GUARD
 #include "file_previews.c"
+#include "config.h"
 #endif
 
 char* preview_file(char *file_name, unsigned long file_size);
 char* get_mimetype(char *path);
 void images_clear();
 void ueberzug_init();
+#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+void ueberzug_close();
+#endif

interactions.c

@@ -1,11 +1,15 @@
 #include <curses.h>
 #include <pthread.h>
 #include <dirent.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
 
 #include "file_previews.h"
 #include "backend.h"
 #include "defines.h"
 #include "config.h"
+#include "dir.h"
 
 
 extern volatile unsigned long selected_file_current;
@@ -15,10 +19,11 @@ extern unsigned int file_modifiers;
 extern pthread_mutex_t mutex_selection;
 extern pthread_mutex_t mutex_rgt;
 extern pthread_mutex_t mutex_mid;
+extern pthread_mutex_t mutex_btm;
+extern pthread_cond_t cond_rgt;
 extern file *mid_content;
 extern file *lft_content;
 extern file *rgt_content;
-extern volatile file *file_current;
 
 extern unsigned int terminal_height;
 extern unsigned int terminal_width;
@@ -33,13 +38,15 @@ extern unsigned int status;
 extern char *start_path;
 extern char *input;
 
+extern time_t *seed;
+
+char search_buffer[255];
 unsigned int timeout_time = 0;
 unsigned int input_pass;
-int parsed_input_number;
+unsigned long parsed_input_number;
 yank yank_files = { 0 };
 
 int read_string(WINDOW *win, int y, int x, char *str);
-int strcmp_offset(char *in0, char *in1, char offset);
 extern void render_pass();
 extern int (*order_func)();
 
@@ -63,7 +70,7 @@ void user_interactions() {
 
 	ch = getch();
 	if(ch != ERR) {
-		timeout(1); /* blocking timeout of getch() */
+		timeout(10); /* blocking timeout of getch() */
 		input[input_pass] = ch;
 		mvaddstr(terminal_height-1, (terminal_width/3)*2, input);
 		input_pass++;
@@ -76,6 +83,8 @@ void user_interactions() {
 		}
 		binding_pass = 0;
 		status |= STATUS_UPDATE_SCREEN_0;
+	} else {
+		timeout(100);
 	}
 
 
@@ -112,7 +121,7 @@ void user_interactions() {
 		}
 		if (status & STATUS_INPUT_MATCH) {
 			attron(A_UNDERLINE);
-			mvaddstr(terminal_height-binding_matches-2, 0, "input\tcommand\t\t");
+			mvwprintw(stdscr, terminal_height-binding_matches-2, 0, "input\tcommand\t\t");
 			attroff(A_UNDERLINE);
 			status &= ~STATUS_INPUT_MATCH;
 		} else if (number_length != strlen(input)) {
@@ -140,14 +149,18 @@ int read_string(WINDOW *win, int y, int x, char *str){
 		if (ch == '\n') {
 			err = 0;
 			break;
-		} else if (ch == 27) { /* esc key */
+		} else if (ch == '\t') { /* tab */
-			err = 1;
+			memcpy(str + pass, mid_content[selected_file_current].file_name, strlen(mid_content[selected_file_current].file_name));
-			break;
+			mvwaddstr(win, y, x +pass, mid_content[selected_file_current].file_name);
+			pass += strlen(mid_content[selected_file_current].file_name);
 		} else if (ch == 127) { /* backspace */
 			if (pass > 0) {
 				pass--;
 				mvwdelch(win, y, pass);
 			}
+		} else if (ch == 27) { /* esc key */
+			err = 1;
+			break;
 		} else {
 			mvwaddch(win, y, x +pass, ch);
 			str[pass] = ch;
@@ -156,97 +169,100 @@ int read_string(WINDOW *win, int y, int x, char *str){
 	}
 	str[pass] = '\0';
 
-	timeout(10); 
+	timeout(100); 
 	curs_set(0);
 
 	return err;
 }
-int strcmp_offset(char *in0, char *in1, char offset){
-
-	int i = 0;
-	while (in0[i] != '\0' && in1[i] != '\0') {
-		if (in0[i+offset] != in1[i]) {
-			return 1;
-		}
-		i++;
-		in1++;
-	}
-	return 0;
-
-}
 void quit_program(){
 	status = STATUS_QUIT_PROGRAM;
 }
-void toggle_selection(){
+void select_all(){
 	pthread_mutex_lock(&mutex_selection);
 	pthread_mutex_lock(&mutex_mid);
-	mid_content[selected_file_current].status ^= FILE_STATUS_SELECTED;
+	unsigned long i;
-	file_current->status ^= FILE_STATUS_SELECTED;
+	for(i = 0; i < mid_file_count; i++) {
-	status |= (STATUS_UPDATE_SCREEN_MASK);
+		mid_content[i].status ^= FILE_STATUS_SELECTED;
+	}
 	pthread_mutex_unlock(&mutex_mid);
 	pthread_mutex_unlock(&mutex_selection);
 }
-void move_down(int passes){
+void move_down(unsigned long passes){
 	pthread_mutex_lock(&mutex_selection);
 	if (passes == 0) {
 		passes++;
 	}
-	/*capping the maximum file is done inside thread_mid */
 	selected_file_current += passes;
-	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK);
+
+	update_selected_file();
+	dir_set_selected_file_current(selected_file_current);
+
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
 	pthread_mutex_unlock(&mutex_selection);
 }
-void move_up(int passes){
+void move_up(unsigned long passes){
 	pthread_mutex_lock(&mutex_selection);
 	if (passes == 0) {
 		passes++;
 	}
-	int i;
+	unsigned long tmp = selected_file_current;
-	for (i = 0; i < passes; i++) {
+	selected_file_current -= passes;
-		if (selected_file_current != 0) {
+	if (tmp < selected_file_current) {
-			selected_file_current--;
+		selected_file_current = 0;
-		}
 	}
+
+	update_selected_file();
+	dir_set_selected_file_current(selected_file_current);
+	
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK);
 	pthread_mutex_unlock(&mutex_selection);
 }
-void move_left(int passes){
+void move_left(unsigned long passes){
 	if (passes == 0) {
 		passes++;
 	}
-	int i;
+	unsigned long i;
 	for (i = 0; i < passes; i++) {
 		if (chdir("..") != 0) {
 			/* TODO(2025-07-09T00:30:05) fix */
 			FAIL("move_left", "unhandled error of chdir");
+		} else {
+			selected_file_current = dir_get_selected_file_current();
 		}
 	}
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
 }
 void move_right(){
-	if (file_current->file_type == FILE_TYPE_DIR || file_current->file_type == FILE_TYPE_SYMLINK) {
+	if (mid_content->file_name[0] == '\0') {
-		if (chdir(file_current->file_name) != 0) {
+		return;
+	}
+	if (mid_content[selected_file_current].file_type &= FILE_TYPE_DIR) {
+		if (chdir(mid_content[selected_file_current].file_name) != 0) {
 			FAIL("move_right", "unhandled error of chdir");
+		} else {
+			selected_file_current = dir_get_selected_file_current();
 		}
 	} else {
 		unsigned long i = 0;
 		char match = 0;
-		char *mime = get_mimetype(file_current->file_name);
+		char *mime = get_mimetype(mid_content[selected_file_current].file_name);
-		char *extension = strrchr(file_current->file_name, '.');
+		char *extension = strrchr(mid_content[selected_file_current].file_name, '.');
-		for (i = 0; i < file_extension_default_count; i++) {
+		if (extension != NULL) {
-			if (strstr(extension, file_extension_default_cmd[i].file_extension)) {
+			for (i = 0; i < file_extension_default_count; i++) {
-				char *cmd = concat(file_extension_default_cmd[i].command, " ./\"");
+				if (strstr(extension, file_extension_default_cmd[i].file_extension)) {
-				cmd = concat(cmd, file_current->file_name);
+					char *cmd = concat(file_extension_default_cmd[i].command, " ./\"");
-				cmd = concat(cmd, "\"");
+					cmd = concat(cmd, mid_content[selected_file_current].file_name);
+					cmd = concat(cmd, "\"");
 
 
-				if (system(cmd) == -1) {
+					if (system(cmd) == -1) {
-					/*do nothing*/
+						/*do nothing*/
+					}
+					curs_set(1); /*for some reason, 1 here turns it invisible once again */
+					match = 1;
+					status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
+					break;
 				}
-				curs_set(1); /*for some reason, 1 here turns it invisible once again */
-				match = 1;
-				status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
-				break;
 			}
 		}
 		if (match == 0) {
@@ -254,7 +270,7 @@ void move_right(){
 				if (strstr(mime, mimetype_default_cmd[i].mimetype)) {
 
 					char *cmd = concat(mimetype_default_cmd[i].command, " ./\"");
-					cmd = concat(cmd, file_current->file_name);
+					cmd = concat(cmd, mid_content[selected_file_current].file_name);
 					cmd = concat(cmd, "\"");
 					btm_buffer = malloc(strlen(cmd));
 				
@@ -273,27 +289,43 @@ void move_right(){
 		}
 		free(mime);
 	}
+	update_selected_file();
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
 }
 void toggle_hidden_files(){
 	file_modifiers ^= FILE_MODIFIERS_HIDDEN_FILES;
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
 }
+void toggle_selection(){
+	pthread_mutex_lock(&mutex_selection);
+	pthread_mutex_lock(&mutex_mid);
+	mid_content[selected_file_current].status ^= FILE_STATUS_SELECTED;
+	status |= (STATUS_UPDATE_SCREEN_MASK);
+	pthread_mutex_unlock(&mutex_mid);
+	pthread_mutex_unlock(&mutex_selection);
+	move_down(1);
+}
 void jump_bottom(){
 	pthread_mutex_lock(&mutex_selection);
 	selected_file_current = 0 - 1;
+	update_selected_file();
+	dir_set_selected_file_current(selected_file_current);
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK);
 	pthread_mutex_unlock(&mutex_selection);
 }
 void jump_top(){
 	pthread_mutex_lock(&mutex_selection);
 	selected_file_current = 0;
+	update_selected_file();
+	dir_set_selected_file_current(selected_file_current);
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK);
 	pthread_mutex_unlock(&mutex_selection);
 }
 
 void open_with(){
-	btm_buffer = concat("open \"", file_current->file_name);
+	pthread_mutex_lock(&mutex_btm);
+
+	btm_buffer = concat("open \"", mid_content[selected_file_current].file_name);
 	btm_buffer = concat(btm_buffer, "\" with:");
 
 	status |= STATUS_UPDATE_SCREEN_0;
@@ -314,9 +346,13 @@ void open_with(){
 	
 	if (!err) {
 		char *cmd = concat(str, " ./\"");
-		cmd = concat(cmd, file_current->file_name);
+		cmd = concat(cmd, mid_content[selected_file_current].file_name);
 		cmd = concat(cmd, "\"");
 
+		#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+		images_clear();
+		#endif
+
 		if (system(cmd) == -1) {
 			FAIL("open_with", "creating subcommand failed unhandled");
 		}
@@ -332,8 +368,9 @@ void open_with(){
 }
 
 void rename_hovered(){
+	pthread_mutex_lock(&mutex_btm);
 
-	btm_buffer = concat("rename \"", file_current->file_name);
+	btm_buffer = concat("rename \"", mid_content[selected_file_current].file_name);
 	btm_buffer = concat(btm_buffer, "\" to:");
 
 	status |= STATUS_UPDATE_SCREEN_0;
@@ -341,7 +378,9 @@ void rename_hovered(){
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, 5, terminal_width/3); /*the div3 just looks cool*/
 
+	pthread_mutex_unlock(&mutex_btm);
 	render_pass();
+	pthread_mutex_lock(&mutex_btm);
 
 	unsigned long local_height;
 	local_height = getmaxy(win_b);
@@ -353,7 +392,7 @@ void rename_hovered(){
 
 	
 	if (!err) {
-		char *cmd = concat("mv ./\"", file_current->file_name);
+		char *cmd = concat("mv ./\"", mid_content[selected_file_current].file_name);
 		cmd = concat(cmd, "\" ./\"");
 		cmd = concat(cmd, str);
 		cmd = concat(cmd, "\"");
@@ -363,6 +402,7 @@ void rename_hovered(){
 		};
 		btm_buffer = cmd;
 	}
+	pthread_mutex_unlock(&mutex_btm);
 
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
 
@@ -371,7 +411,8 @@ void rename_hovered(){
 }
 
 void delete(){
-	
+	pthread_mutex_lock(&mutex_btm);
+
 	unsigned int i = 0;
 	unsigned int hits = 0;
 	char *file_str = " ";
@@ -387,7 +428,7 @@ void delete(){
 	if (hits) {
 		btm_buffer = concat("delete:", file_str);
 	} else {
-		btm_buffer = concat("delete: \"", file_current->file_name);
+		btm_buffer = concat("delete: \"", mid_content[selected_file_current].file_name);
 		btm_buffer = concat(btm_buffer, "\"");
 	}
 
@@ -400,8 +441,9 @@ void delete(){
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, 5, terminal_width/3); /*the div3 just looks cool*/
 
+	pthread_mutex_unlock(&mutex_btm);
 	render_pass();
-
+	pthread_mutex_lock(&mutex_btm);
 
 	timeout(-1); /* negative numbers block until enter is pressed */
 	/* TODO(2025-06-22T01:24:30) fix fixed buffer size */
@@ -409,32 +451,22 @@ void delete(){
 	
 	if (ch == 'y' || ch == 'Y') {
 		/* TODO(2025-06-30T02:27:06) IMPORTANT: this really fucks up when the file has a quotation mark in its name */
-		int error;
 		if (hits) {
-			int j = 2;
 			for (i = 0; i < mid_file_count; i++) {
 				if (mid_content[i].status & FILE_STATUS_SELECTED) {
-					error = remove(mid_content[i].file_name);
+					recursive_delete(mid_content[i]);
-					if (error != 0) {
-						mvaddstr(terminal_height-j, 0, "could not delete: " );
-						mvaddstr(terminal_height-j, strlen("could not delete: "), mid_content[i].file_name);
-						j++;
-					}
 				}
 			}
 			free(btm_buffer);
 			btm_buffer = concat("deleted: ", file_str);
 		} else {
 			free(btm_buffer);
-			error = remove(file_current->file_name);
+			if (mid_content[selected_file_current].file_type & FILE_TYPE_DIR) {
-			if (error != 0) {
+				recursive_delete(mid_content[selected_file_current]);
-				mvaddstr(terminal_height-2, 0, "could not delete: " );
+			}
-				mvaddstr(terminal_height-2, strlen("could not delete: "), mid_content[i].file_name);
+			remove(mid_content[selected_file_current].file_name);
-				btm_buffer = " ";
+			btm_buffer = concat("deleted: \"", mid_content[selected_file_current].file_name);
-			} else {
+			btm_buffer = concat(btm_buffer, "\"");
-				btm_buffer = concat("deleted: \"", file_current->file_name);
-				btm_buffer = concat(btm_buffer, "\"");
-			} 
 
 		}
 		/*system(cmd);*/
@@ -450,15 +482,22 @@ void delete(){
 	if (hits) {
 		free(file_str);
 	}
+	pthread_mutex_unlock(&mutex_btm);
 }
 
 void makedir(){
-	btm_buffer = "create dir: ";
+	pthread_mutex_lock(&mutex_btm);
-	status |= STATUS_UPDATE_SCREEN_0;
+
 	werase(win_b);
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, 5, terminal_width/3); /*the div3 just looks cool*/
+	memset(btm_buffer, ' ', terminal_width);
+	memcpy(btm_buffer, "create dir: ", strlen("create dir: "));
+	status |= STATUS_UPDATE_SCREEN_0;
+
+	pthread_mutex_unlock(&mutex_btm);
 	render_pass();
+	pthread_mutex_lock(&mutex_btm);
 
 	unsigned long local_height;
 	local_height = getmaxy(win_b);
@@ -475,14 +514,20 @@ void makedir(){
 	}
 	free(str);
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
+	pthread_mutex_unlock(&mutex_btm);
 }
 void makefile(){
-	btm_buffer = "create file: ";
+	pthread_mutex_lock(&mutex_btm);
+
+	memcpy(btm_buffer, "create file: ", strlen("create file: "));
 	status |= STATUS_UPDATE_SCREEN_0;
 	werase(win_b);
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, 5, terminal_width/3); /*the div3 just looks cool*/
+
+	pthread_mutex_unlock(&mutex_btm);
 	render_pass();
+	pthread_mutex_lock(&mutex_btm);
 
 	unsigned long local_height;
 	local_height = getmaxy(win_b);
@@ -498,23 +543,36 @@ void makefile(){
 		fclose(fp);
 	}
 	free(str);
+	pthread_mutex_unlock(&mutex_btm);
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
 }
 
 void update(){
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
 }
-void enter_shell(int passes, int index){
+void enter_shell(unsigned long passes, int index){
+	(void)passes;
+
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+	images_clear();
+	#endif
+	endwin();
 	if (system(key_binding[index].black_magic) != 0) {
 		/*do nothing*/
 	}
+	initscr();
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
 }
-void not_implemented(int passes, int index){
+void not_implemented(unsigned long passes, int index){
-		mvaddstr(terminal_height-1, 0, key_binding[index].comment);
+	(void)passes;
-		mvaddstr(terminal_height-1, strlen(key_binding[index].comment), "\t");
+
-		mvaddstr(terminal_height-1, strlen(key_binding[index].comment) + strlen("\t"), "is not yet implemented");
+	mvaddstr(terminal_height-1, 0, key_binding[index].comment);
+	mvaddstr(terminal_height-1, strlen(key_binding[index].comment), "\t");
+	mvaddstr(terminal_height-1, strlen(key_binding[index].comment) + strlen("\t"), "is not yet implemented");
 }
-void jump_to_dir(int passes, int index){
+void jump_to_dir(unsigned long passes, int index){
+	(void)passes;
+
 	char *ch = (char*)key_binding[index].black_magic;
 	char slash = 0;
 	unsigned int env_len = 0;
@@ -556,6 +614,8 @@ void jump_to_dir(int passes, int index){
 	}
 	if (chdir(path) != 0) {
 		FAIL("jump_to_dir", "jumping to black_magic in config.h failed");
+	} else {
+		selected_file_current = dir_get_selected_file_current();
 	}
 
 	/*env_parsed shall not be modified (read: free'd) - the man page*/
@@ -567,12 +627,21 @@ void jump_to_dir(int passes, int index){
 	}
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
 }
-void order_by(int passes, int index){
+void order_by(unsigned long passes, int index){
-		
+	(void)passes;
+
+	free(seed);
+	seed = NULL;
+	seed = malloc(sizeof(time_t));
+	*seed = time(NULL);
+
 	order_func = key_binding[index].black_magic;
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
 }
-void cmd_on_selected(int passes, int index){
+void cmd_on_selected(unsigned long passes, int index){
+	(void)passes;
+	pthread_mutex_lock(&mutex_btm);
+
 	unsigned int i = 0;
 	unsigned int hits = 0;
 	char *file_str = " ";
@@ -589,7 +658,7 @@ void cmd_on_selected(int passes, int index){
 		btm_buffer = concat(key_binding[index].black_magic, file_str);
 	} else {
 		btm_buffer = concat(key_binding[index].black_magic, "\"");
-		btm_buffer = concat(btm_buffer, file_current->file_name);
+		btm_buffer = concat(btm_buffer, mid_content[selected_file_current].file_name);
 		btm_buffer = concat(btm_buffer, "\"");
 	}
 
@@ -602,7 +671,9 @@ void cmd_on_selected(int passes, int index){
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, 5, terminal_width/3); /*the div3 just looks cool*/
 
+	pthread_mutex_unlock(&mutex_btm);
 	render_pass();
+	pthread_mutex_lock(&mutex_btm);
 
 
 	timeout(-1); /* negative numbers block until enter is pressed */
@@ -626,12 +697,12 @@ void cmd_on_selected(int passes, int index){
 				}
 			}
 			free(btm_buffer);
-			btm_buffer = concat("completed: ", key_binding[index].black_magic);
+			memcpy(btm_buffer, "completed: ", strlen("completed: "));
 		} else {
 			free(btm_buffer);
 			free(cmd);
 			cmd = concat((char*)key_binding[index].black_magic, " \"");
-			cmd = concat(cmd, file_current->file_name);
+			cmd = concat(cmd, mid_content[selected_file_current].file_name);
 			cmd = concat(cmd, "\"");
 			if (system(cmd) != 0) {
 				/*do nothing*/
@@ -644,7 +715,7 @@ void cmd_on_selected(int passes, int index){
 
 	} else {
 		free(btm_buffer);
-		btm_buffer = "cancled deletion";
+		memcpy(btm_buffer, "cancled deletion", strlen("cancled deletion"));
 	}
 
 	timeout(10); 
@@ -653,16 +724,41 @@ void cmd_on_selected(int passes, int index){
 	if (hits) {
 		free(file_str);
 	}
+	pthread_mutex_unlock(&mutex_btm);
 }
-void yank_file(int passes, int index){
+void yank_text(unsigned long passes, int index){
+	(void)passes;
+	char *cmd;
+	if (strncmp((char*)key_binding[index].black_magic, "path", 4) == 0) {
+		char *path=getcwd(NULL, 0);
+		cmd = concat("echo \"", path);
+		cmd = concat(cmd, "/");
+		cmd = concat(cmd, mid_content[selected_file_current].file_name);
+		cmd = concat(cmd, "\" | ");
+		cmd = concat(cmd, clipboard_cmd);
+		free(path);
+	} else {
+		cmd = concat("echo \"", mid_content[selected_file_current].file_name);
+		cmd = concat(cmd, "\" | ");
+		cmd = concat(cmd, clipboard_cmd);
+	}
+	if (system(cmd) == -1) {
+		/*do nothing*/
+	}
+	free(cmd);
+}
+void yank_file(unsigned long passes, int index){
+	(void)passes;
+
 	unsigned long i;
 	if (yank_files.status & YANK_IS_USED) {
-		free(yank_files.path);
 		for (i = 0; i < yank_files.count; i++) {
 			free(yank_files.list[i]);
 		}
 		free(yank_files.list);
+		free(yank_files.path);
 		yank_files.count = 0;
+		yank_files.status = 0;
 	}
 	yank_files.path=getcwd(NULL, 0);
 	yank_files.count = 0;
@@ -679,7 +775,7 @@ void yank_file(int passes, int index){
 		strcpy(*yank_files.list, mid_content[selected_file_current].file_name);
 	} else {
 		yank_files.list = malloc(yank_files.count * sizeof(char*));
-		for (i = 0; i < mid_file_count && i < yank_files.count; i++) {
+		for (i = 0; i < mid_file_count; i++) {
 			if (mid_content[i].status & FILE_STATUS_SELECTED) {
 				*yank_files.list = malloc(strlen(mid_content[i].file_name)+1);
 				strcpy(*yank_files.list, mid_content[i].file_name);
@@ -703,24 +799,161 @@ void paste(){
 		/*TODO(2025-08-14T22:10:44) escape path*/
 		char *cmd;
 		if (yank_files.status & YANK_COPY) {
-			cmd = concat("false | cp -r -i ", yank_files.path);
+			cmd = concat("false | cp -riv ", yank_files.path);
 		} else {
 			cmd = concat("mv ", yank_files.path);
 		}
 		cmd = concat(cmd, "/");
 		cmd = concat(cmd, *yank_files.list);
 		cmd = concat(cmd, " ./");
-		mvprintw(i, 0, cmd);
+		cmd = concat(cmd, *yank_files.list);
-		if (system(cmd) != 0) {
+		cmd = concat(cmd, " 2>&1");
-			cmd = concat(cmd, *yank_files.list);
+		char *line = malloc(255);
-			while (1) {
+		FILE *cmd_open;
+		while (1) {
+			cmd_open = popen(cmd, "r");
+			if (fgets(line, 255, cmd_open) == 0) {
+				break;
+			}
+			if (strstr(line, "are the same file")) {
+				cmd[strlen(cmd)-strlen(" 2>&1")] = '\0';
 				cmd = concat(cmd, "_");
-				if (system(cmd) == 0) {
+				cmd = concat(cmd, " 2>&1");
-					break;
+			} else if ((strstr(line, "overwrite"))) { 
-				} 			}
+				cmd[strlen(cmd)-strlen(" 2>&1")] = '\0';
+				cmd = concat(cmd, "_");
+				cmd = concat(cmd, " 2>&1");
+			} else if ((strstr(line, "No such file or directory"))) { 
+				pclose(cmd_open);
+				break;
+			} else if (pclose(cmd_open) == 0) {
+				break;
+			}
+			pclose(cmd_open);
 		}
+
+		free(cmd);
+				
 		yank_files.list++;
 	}
 	yank_files.list -= yank_files.count;
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
 }
+void search(){
+	pthread_mutex_lock(&mutex_btm);
+
+	unsigned long local_height;
+	local_height = getmaxy(win_b);
+	memset(search_buffer, '\0', 255);
+
+	pthread_mutex_unlock(&mutex_btm);
+	render_pass();
+	pthread_mutex_lock(&mutex_btm);
+
+	curs_set(1);
+
+	timeout(-1); /* negative numbers block until enter is pressed */
+
+	unsigned int pass = 0;
+	char ch;
+
+	wmove(win_b, local_height-1, 1);
+	while(1) {
+		/*ch = mvwgetch(win, y, x + pass);*/
+		werase(win_b);
+		mvwaddch(win_b, local_height-1, 0, '/');
+		mvwaddstr(win_b, local_height-1, 1, search_buffer);
+		ch = wgetch(win_b);
+		if (ch == '\n') {
+			break;
+		} else if (ch == '\t') { /* tab */
+			memcpy(search_buffer, mid_content[selected_file_current].file_name, strlen(mid_content[selected_file_current].file_name));
+			mvwaddstr(win_b, local_height-1, pass, mid_content[selected_file_current].file_name);
+			pass = strlen(mid_content[selected_file_current].file_name);
+		} else if (ch == 127) { /* backspace */
+			mvwdelch(win_b, local_height-1, 1);
+			wdelch(win_b);
+			if (pass != 0) {
+				search_buffer[pass-1] = '\0';
+				pass--;
+			}
+		} else if (ch == 27) { /* esc key */
+			break;
+		} else {
+			search_buffer[pass] = ch;
+			pass++;
+			unsigned long i;
+			for (i = 0; i < mid_file_count; i++) {
+				if (smartstrcasestr(mid_content[i].file_name, search_buffer)) {
+					selected_file_current = i;
+					if (update_selected_file()) {
+						pthread_cond_signal(&cond_rgt);
+					}
+					status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
+					break;
+				}
+				render_pass();
+			}
+		}
+	}
+	search_buffer[pass] = '\0';
+
+	timeout(10); 
+	curs_set(0);
+
+	dir_set_selected_file_current(selected_file_current);
+
+	update_selected_file();
+
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
+	pthread_mutex_unlock(&mutex_btm);
+}
+void search_next(){
+	unsigned long i;
+	for (i = selected_file_current+1; i < mid_file_count; i++) {
+		if (smartstrcasestr(mid_content[i].file_name, search_buffer)) {
+			selected_file_current = i;
+			status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
+			update_selected_file();
+			render_pass();
+			break;
+		}
+	}
+}
+void search_previous(){
+	unsigned long i;
+	for (i = selected_file_current-1;; i--) {
+		if(i > selected_file_current) {
+			break;
+		}
+		if (smartstrcasestr(mid_content[i].file_name, search_buffer)) {
+			selected_file_current = i;
+			status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
+			update_selected_file();
+			render_pass();
+			break;
+		}
+	}
+}
+void jmp_file_index(){
+	char *index = malloc(255);
+	memset(index, ' ', 255);
+	index[254] = '\0';
+	unsigned long local_height;
+	local_height = getmaxy(win_b);
+	read_string(win_b, local_height - 1, 0, index);
+
+	unsigned long new_index = 0;
+	while((*index >= '0') && (*index <= '9')) {
+		new_index = (new_index * 10) + (*index - '0');
+		index++;
+	}
+	if (new_index > mid_file_count) {
+		selected_file_current = mid_file_count;
+	} else {
+		selected_file_current = new_index;
+	}
+
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
+	update_selected_file();
+}

interactions.h

@@ -7,10 +7,11 @@
 void user_interactions();
 void quit_program();
 void toggle_selection();
+void select_all();
 void move_right();
-void move_up(int passes);
+void move_up(unsigned long passes);
-void move_down(int passes);
+void move_down(unsigned long passes);
-void move_left(int passes);
+void move_left(unsigned long passes);
 void jump_bottom();
 void jump_top();
 void toggle_hidden_files();
@@ -20,10 +21,15 @@ void delete();
 void makedir();
 void makefile();
 void update();
-void enter_shell(int passes, int index);
+void enter_shell(unsigned long passes, int index);
-void not_implemented(int passes, int index);
+void not_implemented(unsigned long passes, int index);
-void jump_to_dir(int passes, int index);
+void jump_to_dir(unsigned long passes, int index);
-void order_by(int passes, int index);
+void order_by(unsigned long passes, int index);
-void cmd_on_selected(int passes, int index);
+void cmd_on_selected(unsigned long passes, int index);
-void yank_file(int passes, int index);
+void yank_text(unsigned long passes, int index);
+void yank_file(unsigned long passes, int index);
 void paste();
+void search();
+void search_next();
+void search_previous();
+void jmp_file_index();

main.c

@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <locale.h>
+#include <time.h>
 
 #include "defines.h"
 #include "threading.h"
@@ -20,6 +21,7 @@ unsigned int settings;
 unsigned int file_modifiers;
 unsigned int status = (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY); 
 char *start_path;
+time_t *seed;
 
 WINDOW *win_t;
 WINDOW *win_b;
@@ -58,7 +60,17 @@ int main(){
 
 	char threading = 0;
 	terminal_width_empty_line = malloc(terminal_width);
+	#if SETTINGS_RELOAD_DIR_DELTA != 0
+	time_t t;
+	time_t dt;
+	time(&t);
+	#endif
 
+	pthread_create(&thread_t, NULL, thread_top, &status); /*top bar*/
+	pthread_create(&thread_l, NULL, thread_lft, &status); /*parent_content slash win_l*/
+	pthread_create(&thread_m, NULL, thread_mid, &status); /*current_content slash win_m*/
+	pthread_create(&thread_r, NULL, thread_rgt, &status); /*child_content slash win_r*/
+	pthread_create(&thread_b, NULL, thread_btm, &status); /*bottom bar*/
 		
 	while(!(status & STATUS_QUIT_PROGRAM)){
 		getmaxyx(stdscr, terminal_height, terminal_width);
@@ -68,28 +80,14 @@ int main(){
 			temp_width = terminal_width;
 			temp_heigth = terminal_height;
 		}
-		if (status & STATUS_RUN_BACKEND && threading) {
-			pthread_cancel(thread_b);
-			pthread_cancel(thread_r);
-			pthread_cancel(thread_m);
-			pthread_cancel(thread_l);
-			pthread_cancel(thread_t);
-               }
 		if (threading) {
-			status &= ~(STATUS_RELOAD_DIRECTORY);
+			status &= ~(STATUS_RELOAD_DIRECTORY | STATUS_DELTA_TIME);
-			pthread_join(thread_t, NULL);
-			pthread_join(thread_l, NULL);
-			pthread_join(thread_m, NULL);
-			pthread_join(thread_b, NULL);
-			pthread_join(thread_r, NULL);
 			threading = 0;
 		} 
 		if (status & STATUS_RUN_BACKEND) {
-			pthread_create(&thread_t, NULL, thread_top, &status); /*top bar*/
+			pthread_cond_signal(&cond_top);
-			pthread_create(&thread_l, NULL, thread_lft, &status); /*parent_content slash win_l*/
+			pthread_cond_signal(&cond_mid);
-			pthread_create(&thread_m, NULL, thread_mid, &status); /*current_content slash win_m*/
+			pthread_cond_signal(&cond_lft);
-			pthread_create(&thread_b, NULL, thread_btm, &status); /*bottom bar*/
-			pthread_create(&thread_r, NULL, thread_rgt, &status); /*child_content slash win_r*/
 			status &= ~(STATUS_RUN_BACKEND);
 			status |= STATUS_UPDATE_SCREEN_0;
 			threading = 1;
@@ -99,17 +97,30 @@ int main(){
 
 		render_pass();
 
+		#if SETTINGS_RELOAD_DIR_DELTA != 0
+		time(&dt);
+		if (dt - t >= SETTINGS_RELOAD_DIR_DELTA) {
+			time(&t);
+			status |= (STATUS_RUN_BACKEND | STATUS_RELOAD_DIRECTORY | STATUS_DELTA_TIME);
+		}
+		#endif
+
 	}
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+	ueberzug_close();
+	#endif
 	threading_free();
 	free(start_path);
 
-	if  (threading) {
+	/*
+	if (threading) {
 		pthread_join(thread_l, NULL);
 		pthread_join(thread_r, NULL);
 		pthread_join(thread_m, NULL);
 		pthread_join(thread_t, NULL);
 		pthread_join(thread_b, NULL);
 	}
+	*/
 
 	delwin(win_l);
 	delwin(win_m);
@@ -117,9 +128,9 @@ int main(){
 	delwin(win_t);
 	delwin(win_b);
 	noraw();
-	endwin();
-	curs_set(1);
 	echo();
+	curs_set(1);
+	endwin();
 	return 0;
 }
 
@@ -190,11 +201,17 @@ void init() {
 
 	threading_init(); /* found in threading.c */
 	colors_init(); /* in colors.c */
+	dir_init();	/*in dir.c */
+	#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
 	ueberzug_init(); /* in file_previews.c */
+	#endif
 
 	ESCDELAY = 10;
 	char *start_path = getcwd(NULL, 0);
 	setenv("START_PATH", start_path, 0);
 	free(start_path);
 
+	seed = malloc(sizeof(time_t));
+	*seed = time(NULL);
+
 }

sorting.c

@@ -1,19 +1,24 @@
 #include <curses.h>
 #include <dirent.h>
-#include <strings.h>
 #include <stdlib.h>
+#include <strings.h>
 #include <string.h>
+#include <pthread.h>
+#include <unistd.h>
 
-extern unsigned int settings;
+#include "defines.h"
-extern unsigned int file_modifiers;
+
+extern time_t *seed;
 
 int skip_hidden_files(const struct dirent *entry){
+
 	if (entry->d_name[0] == '.') {
 		return 0;
 	}
 	return 1;
 }
 int skip_dot(const struct dirent *entry){
+
 	if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
 		return 0;
 	}
@@ -21,136 +26,178 @@ int skip_dot(const struct dirent *entry){
 }
 
 int sort_natural(const void *file0, const void *file1){
-	unsigned char file_type0 = ((file*)file0)->file_type;
-	unsigned char file_type1 = ((file*)file1)->file_type;
-		
-	char weight = 0;
-	if (file_type0 == FILE_TYPE_DIR || file_type0 == FILE_TYPE_SYMLINK) {
-		weight |= 1;
-	} 
-	if (file_type1 == FILE_TYPE_DIR || file_type1 == FILE_TYPE_SYMLINK) {
-		weight |= 2;
-	}
-	if (weight == 0 || weight == 3) {
-		char *file_name0 = ((file*)file0)->file_name;
-		char *file_name1 = ((file*)file1)->file_name;
-		return strcasecmp(file_name0, file_name1);
-	} else {
-		if (file_type0 > file_type1) {
-			return 1;
-		} else if (file_type0 < file_type1) {
-			return -1;
-		} else {
-			char *file_name0 = ((file*)file0)->file_name;
-			char *file_name1 = ((file*)file1)->file_name;
-			return strcasecmp(file_name0, file_name1);
-		}
-	}
-}
-int sort_alpha(const void *file0, const void *file1){
-	char *file_name0 = ((file*)file0)->file_name;
-	char *file_name1 = ((file*)file1)->file_name;
-	return strcmp(file_name0, file_name1);
-}
-int sort_random(const void *file0, const void *file1){
-	unsigned char file_type0 = ((file*)file0)->file_type;
-	unsigned char file_type1 = ((file*)file1)->file_type;
-	static int seed = 0;
-	static int random = 0;
 
-	if (seed == 0) {
+	if ((((file*)file0)->file_type & FILE_TYPE_DIR) && !(((file*)file1)->file_type & FILE_TYPE_DIR)) {
-		seed = rand();
-	}
-	if (random == 0) {
-		random = seed;
-	}
-	char weight = 0;
-	if (file_type0 == FILE_TYPE_DIR || file_type0 == FILE_TYPE_SYMLINK) {
-		weight |= 1;
-	} 
-	if (file_type1 == FILE_TYPE_DIR || file_type1 == FILE_TYPE_SYMLINK) {
-		weight |= 2;
-	}
-	if (weight == 0 || weight == 3) {
-		random = random > 1;
-		if ((random & 2) == 2) {
 			return -1;
-		} else {
+	}
-			if (random & 1){
+	if (!(((file*)file0)->file_type & FILE_TYPE_DIR) && (((file*)file1)->file_type & FILE_TYPE_DIR)) {
-				return 1;
-			} else {
-				return 0;
-			}
-		}
-	} else {
-		if (file_type0 > file_type1) {
 			return 1;
-		} else if (file_type0 < file_type1) {
+	}
-			return -1;
+	const unsigned char *a = (unsigned char*)((file*)file0)->file_name;
-		} else {
+	const unsigned char *b = (unsigned char*)((file*)file1)->file_name;
-			random = random > 1;
+
-			if ((random & 2) == 2) {
+	long parsed_number0 = 0;
-				return -1;
+	long parsed_number1 = 0;
-			} else {
+	char is_num = 0;
-				if (random & 1){
+	char result = 0;
-					return 1;
+
+	do {
+
+		if ((*a <= '9') && (*a >= '0')) {
+			parsed_number0 = 0;
+			do {
+				parsed_number0 = (parsed_number0 * 10) + (*a - '0');
+				a++;
+			} while((*a <= '9') && (*a >= '0'));
+			is_num |= 1;
+		}
+		if ((*b <= '9') && (*b >= '0')) {
+			parsed_number1 = 0;
+			do {
+				parsed_number1 = (parsed_number1 * 10) + (*b - '0');
+				b++;
+			} while((*b <= '9') && (*b >= '0'));
+			is_num |= 2;
+		}
+
+		if (is_num) {
+			if (is_num == 1) {
+				if (*b > '9') {
+					result = -1;
 				} else {
-					return 0;
+					result = 1;
+				}
+				break;
+			} else if (is_num == 2) {
+				if (*a > '9') {
+					result = 1;
+				} else {
+					result = -1;
+				}
+				break;
+			} else {
+				if (parsed_number0 > parsed_number1) {
+					result = 1;
+					break;
+				} else if (parsed_number0 < parsed_number1) {
+					result = -1;
+					break;
 				}
 			}
+			/* those breaks are not set here, due to the possibillity that both numbers are equal
+			 * in which case the comparison should continue */
+			is_num = 0;
+		}
+
+		unsigned char aa = ((*a >= 'A') && (*a <= 'Z')) ? (*a | ' ') : *a;
+		unsigned char bb = ((*b >= 'A') && (*b <= 'Z')) ? (*b | ' ') : *b;
+		/*using a simple aa - bb would occasionaly cause underflows with wide chars*/
+		result = ((aa == bb) ? 0 : ((aa > bb) ? 1 : -1 ));
+		a++;
+		b++;
+	} while (result == 0);
+
+	return result;
+}
+int sort_alpha(const void *file0, const void *file1){
+
+	if ((((file*)file0)->file_type & FILE_TYPE_DIR) && !(((file*)file1)->file_type & FILE_TYPE_DIR)) {
+			return -1;
+	}
+	if (!(((file*)file0)->file_type & FILE_TYPE_DIR) && (((file*)file1)->file_type & FILE_TYPE_DIR)) {
+			return 1;
+	}
+
+	return strcmp(((file*)file0)->file_name, ((file*)file1)->file_name);
+}
+int sort_random(const void *file0, const void *file1){
+
+	if ((((file*)file0)->file_type & FILE_TYPE_DIR) && !(((file*)file1)->file_type & FILE_TYPE_DIR)) {
+			return -1;
+	}
+	if (!(((file*)file0)->file_type & FILE_TYPE_DIR) && (((file*)file1)->file_type & FILE_TYPE_DIR)) {
+			return 1;
+	}
+	time_t num = (time_t)&seed;
+	time_t i;
+	for (i = num%2; i < 6+(((time_t)&seed)%2); i++){
+		num ^= *seed;
+		if (num%2) {
+			num ^= (time_t)&num;
+			num ^= num << (i + (((time_t)&seed)%5));
+		} else {
+			num ^= (time_t)&seed;
+			num ^= num >> (i + (((time_t)&num)%5));
 		}
 	}
-	return 0;
+	num ^= getpid();
+
+	return ((num%3) - 1);
+
 }
 int sort_type(const void *file0, const void *file1){
-	unsigned char file_type0 = ((file*)file0)->file_type;
+
-	unsigned char file_type1 = ((file*)file1)->file_type;
+	if ((((file*)file0)->file_type & FILE_TYPE_DIR) && !(((file*)file1)->file_type & FILE_TYPE_DIR)) {
-	char *file_name0 = ((file*)file0)->file_name;
+			return -1;
-	char *file_name1 = ((file*)file1)->file_name;
+	}
-	if (file_type0 == file_type1) {
+	if (!(((file*)file0)->file_type & FILE_TYPE_DIR) && (((file*)file1)->file_type & FILE_TYPE_DIR)) {
-		return strcasecmp(file_name0, file_name1);
+			return 1;
-	} else if (file_type0 == FILE_TYPE_DIR || file_type0 == FILE_TYPE_SYMLINK) {
+	}
+
+	if (((file*)file0)->file_type > ((file*)file1)->file_type) {
 		return -1;
-	} else if (file_type1 == FILE_TYPE_DIR || file_type1 == FILE_TYPE_SYMLINK) {
+	} else if (((file*)file0)->file_type < ((file*)file1)->file_type) {
 		return 1;
 	} else {
-		if (file_type0 > file_type1) {
+		return sort_natural(file0, file1);
-			return -1;
-		} else if (file_type0 < file_type1) {
-			return 1;
-		} else {
-			return strcasecmp(file_name0, file_name1);
-		}
 	}
 }
 int sort_size(const void *file0, const void *file1){
-	unsigned char file_type0 = ((file*)file0)->file_type;
+
-	unsigned char file_type1 = ((file*)file1)->file_type;
+	if ((((file*)file0)->file_type & FILE_TYPE_DIR) && !(((file*)file1)->file_type & FILE_TYPE_DIR)) {
-	unsigned long file_size0 = ((file*)file0)->file_size;
-	unsigned long file_size1 = ((file*)file1)->file_size;
-	char *file_name0 = ((file*)file0)->file_name;
-	char *file_name1 = ((file*)file1)->file_name;
-	if (file_type0 == file_type1) {
-		if (file_size0 > file_size1) {
 			return -1;
-		} else if (file_size0 < file_size1) {
+	}
+	if (!(((file*)file0)->file_type & FILE_TYPE_DIR) && (((file*)file1)->file_type & FILE_TYPE_DIR)) {
 			return 1;
-		} else {
+	}
-			return strcasecmp(file_name0, file_name1);
+
-		}
+	if (((file*)file0)->file_size > ((file*)file1)->file_size) {
+		return -1;
+	} else if (((file*)file0)->file_size < ((file*)file1)->file_size) {
+		return 1;
 	} else {
-		if (file_type0 == FILE_TYPE_DIR || file_type0 == FILE_TYPE_SYMLINK) {
+		return sort_natural(file0, file1);
-			return -1;
+	}
-		} else if (file_type1 == FILE_TYPE_DIR || file_type1 == FILE_TYPE_SYMLINK) {
+}
-			return 1;
+int sort_extension(const void *file0, const void *file1){
-		} else {
+
-			if (file_size0 > file_size1) {
+	if ((((file*)file0)->file_type & FILE_TYPE_DIR) && !(((file*)file1)->file_type & FILE_TYPE_DIR)) {
-				return -1;
+			return -1;
-			} else if (file_size0 < file_size1) {
+	}
-				return 1;
+	if (!(((file*)file0)->file_type & FILE_TYPE_DIR) && (((file*)file1)->file_type & FILE_TYPE_DIR)) {
-			} else {
+			return 1;
-				return strcasecmp(file_name0, file_name1);
+	}
-			}
+
-		}
+	char *extension0 = strrchr(((file*)file0)->file_name, '.');
+	char *extension1 = strrchr(((file*)file1)->file_name, '.');
+
+	if (extension0 && extension1) {
+		if ((strcmp(extension0, extension1)) == 0) {
+			return sort_natural(file0, file1);
+		} else {
+			file f0;
+			file f1;
+			memcpy(&f0, file0, sizeof(file));
+			memcpy(&f1, file1, sizeof(file));
+			f0.file_name = extension0;
+			f1.file_name = extension1;
+			return sort_natural(&f0, &f1);
+		}
+	} else if (extension0 != NULL && extension1 == NULL) {
+		return 1;
+	} else if (extension0 == NULL && extension1 != NULL) {
+		return -1;
+	} else { 
+		return sort_natural(file0, file1);
 	}
 }

threading.c

@@ -6,7 +6,9 @@
 #include <unistd.h>
 #include <time.h>
 #include <sys/stat.h>
+#include <sys/statvfs.h>
 
+#include "config.h"
 #include "dir.h"
 #include "file_previews.h"
 
@@ -18,9 +20,12 @@ pthread_mutex_t mutex_lft;
 pthread_mutex_t mutex_mid;
 pthread_mutex_t mutex_rgt;
 pthread_mutex_t mutex_selection;
-pthread_mutex_t mutex_wait;
+pthread_cond_t cond_mid;
-pthread_cond_t cond_wait;
+pthread_cond_t cond_rgt;
-volatile char wait_count; /* this is used to determine how many threads are waiting for cont_wait */
+pthread_cond_t cond_lft;
+pthread_cond_t cond_top;
+pthread_cond_t cond_btm;
+
 
 file *rgt_content;
 file *mid_content;
@@ -29,7 +34,6 @@ char *rgt_buffer; /* used for file previews, unlike rgt_content, which is used f
 char *btm_buffer;
 char *top_buffer; /* current path */
 
-volatile file *file_current;
 
 
 unsigned long rgt_file_count = 0;
@@ -42,232 +46,320 @@ unsigned long top_width;
 volatile unsigned long selected_file_current = 0;
 volatile unsigned long selected_file_last = 0;
 extern unsigned int terminal_width;
+extern unsigned int status;
+
+unsigned int btm_status;
 
 
-void *thread_mid(void *data){
+void *thread_mid(){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_mid);
 
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_mid);
+		pthread_cond_wait(&cond_mid, &mutex_mid);
+		unsigned int local_status = status;
 
-	char *path;
+		char *path;
-	if((path=getcwd(NULL, 0)) == NULL) {
+		if((path=getcwd(NULL, 0)) == NULL) {
-		mid_content = malloc(sizeof(file));
+			mid_content = malloc(sizeof(file));
-		mid_content->file_name = "cannot open directory";
+			mid_content->file_name = "cannot open directory";
-		mid_file_count = 1;
+			mid_file_count = 1;
-	} else {
-
-
-		if (status & STATUS_RELOAD_DIRECTORY) {
-			unsigned long i = 0;
-			for (i = 0; i < mid_file_count; i++) {
-				free(mid_content[i].file_name);
-			}
-			free(mid_content);
-			mid_file_count = get_dir_size(path);
-			if (mid_file_count > 0) {
-				mid_content = malloc(mid_file_count * sizeof(file));
-				memset(mid_content, '\0', mid_file_count * sizeof(file));
-				get_dir_content(path, &mid_file_count, mid_content);
-			} else {
-				selected_file_current = 0;
-				mid_content = malloc(sizeof(file));
-				mid_content->status = FILE_STATUS_DIR_EMPTY;
-				mid_content->file_type = 0;
-				mid_content->file_size = 0;
-				mid_content->permissions = 0;
-				mid_content->color_pair = 0;
-				mid_content->file_name = "empty dir";
-
-				file_current->file_name = mid_content->file_name;
-				file_current->file_size = mid_content->file_size;
-				file_current->file_type = mid_content->file_type;
-				file_current->color_pair = mid_content->color_pair;
-				file_current->permissions = mid_content->permissions;
-				file_current->status = mid_content->status;
-				mid_file_count = 0;
-
-				while(wait_count < 2){
-					/*wait for thread_rgt and thread_btm to lock*/
-				}
-				pthread_mutex_lock(&mutex_wait);
-				pthread_cond_broadcast(&cond_wait);
-				pthread_mutex_unlock(&mutex_wait);
-
-				free(path);
-				pthread_mutex_unlock(&mutex_mid);
-				pthread_exit(0);
-			}
-		}
-
-		pthread_mutex_lock(&mutex_selection);
-		if (selected_file_current >= mid_file_count) {
-			selected_file_current = mid_file_count-1;
-			selected_file_current = mid_file_count-1;
-		}
-		if (selected_file_current != selected_file_last) {
-			mid_content[selected_file_last].status &= ~FILE_STATUS_HOVER;
-		}
-		selected_file_last = selected_file_current;
-
-		free(file_current->file_name);
-		file_current->file_name = malloc(strlen(mid_content[selected_file_current].file_name)+1);
-		strcpy(file_current->file_name, mid_content[selected_file_current].file_name);
-		file_current->file_name[strlen(mid_content[selected_file_current].file_name)] = '\0';
-		file_current->file_size = mid_content[selected_file_current].file_size;
-		file_current->file_type = mid_content[selected_file_current].file_type;
-		file_current->color_pair = mid_content[selected_file_current].color_pair;
-		file_current->permissions = mid_content[selected_file_current].permissions;
-
-		mid_content[selected_file_current].status |= FILE_STATUS_HOVER;
-		file_current->status = mid_content[selected_file_current].status;
-		pthread_mutex_unlock(&mutex_selection);
-
-		while(wait_count < 2){
-			/*wait for thread_rgt and thread_btm to lock*/
-		}
-		pthread_mutex_lock(&mutex_wait);
-		pthread_cond_broadcast(&cond_wait);
-		pthread_mutex_unlock(&mutex_wait);
-
-	}
-	free(path);
-	pthread_mutex_unlock(&mutex_mid);
-	pthread_exit(0);
-}
-void *thread_lft(void *data){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_lft);
-
-	char *path;
-	if((path=getcwd(NULL, 0)) == NULL) {
-		lft_content = malloc(sizeof(file));
-		lft_content[0].file_name = "cannot open directory";
-		lft_file_count = 1;
-	} else {
-
-		path[strrchr(path, '/')-path] = '\0';
-		path[0] = '/';
-
-		if (status & STATUS_RELOAD_DIRECTORY) {
-			lft_file_count = get_dir_size(path);
-			free(lft_content);
-			lft_content = malloc(lft_file_count * sizeof(file));
-			memset(lft_content, '\0', lft_file_count * sizeof(file));
-			get_dir_content(path, &lft_file_count, lft_content);
-		}
-
-	}
-	free(path);
-	pthread_mutex_unlock(&mutex_lft);
-	pthread_exit(0);
-
-
-}
-void *thread_rgt(void *data){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_rgt);
-	pthread_mutex_lock(&mutex_wait);
-	wait_count++;
-	pthread_cond_wait(&cond_wait, &mutex_wait);
-	wait_count--;
-	pthread_mutex_unlock(&mutex_wait);
-
-
-	pthread_mutex_lock(&mutex_selection);
-	char *path = malloc(strlen(file_current->file_name) + 1);
-	strcpy(path, file_current->file_name);
-	unsigned char file_current_type = file_current->file_type;
-	unsigned long file_current_size = file_current->file_size;
-	char file_current_status = file_current->status;
-	pthread_mutex_unlock(&mutex_selection);
-
-	if (file_current_type == FILE_TYPE_DIR || file_current_type == FILE_TYPE_SYMLINK) {
-		images_clear();
-
-		unsigned long i = 0;
-		for (i = 0; i < rgt_file_count; i++) {
-			free(rgt_content[i].file_name);
-		}
-		free(rgt_content);
-
-		rgt_file_count = get_dir_size(path);
-		rgt_content = malloc(rgt_file_count * sizeof(file));
-		memset(rgt_content, '\0', rgt_file_count * sizeof(file));
-		get_dir_content(path, &rgt_file_count, rgt_content);
-		rgt_content[0].status &= ~FILE_STATUS_FILE_OPEN;
-
-		free(rgt_buffer);
-		rgt_buffer = malloc(sizeof(char));
-		rgt_buffer[0] = '\0';
-	} else {
-
-		unsigned long i = 0;
-		for (i = 0; i < rgt_file_count; i++) {
-			free(rgt_content[i].file_name);
-		}
-		free(rgt_content);
-		rgt_file_count = 0;
-		rgt_content = malloc(sizeof(file));
-
-		free(rgt_buffer);
-		if (file_current_status & FILE_STATUS_DIR_EMPTY) {
-			rgt_buffer = "empty dir";
 		} else {
-			rgt_content->file_type = FILE_TYPE_OPEN_FILE;
+
-			rgt_content->status = FILE_STATUS_HOVER;
+
-			rgt_buffer = preview_file(path, file_current_size);
+			if (local_status & STATUS_RELOAD_DIRECTORY) {
+				unsigned long i = 0;
+				for (i = 0; i < mid_file_count; i++) {
+					free(mid_content[i].file_name);
+				}
+				free(mid_content);
+				mid_file_count = get_dir_size(path);
+				if (mid_file_count != 0) {
+					mid_content = malloc(mid_file_count * sizeof(file));
+					memset(mid_content, '\0', mid_file_count * sizeof(file));
+					get_dir_content(path, &mid_file_count, mid_content);
+				} else {
+					selected_file_current = 0;
+					mid_content = malloc(sizeof(file));
+					mid_content->file_type = 0;
+					mid_content->file_size = 0;
+					mid_content->permissions = 0;
+					mid_content->color_pair = 0;
+					mid_content->file_name = malloc(sizeof(char));
+					mid_content->file_name[0] = '\0';
+
+					mid_file_count = 0;
+
+				}
+				pthread_mutex_lock(&mutex_selection);
+				update_selected_file();
+				pthread_mutex_unlock(&mutex_selection);
+			}
+
+			btm_status = local_status;
+			pthread_cond_signal(&cond_rgt);
+			pthread_cond_signal(&cond_btm);
+
 		}
+		free(path);
+		pthread_mutex_unlock(&mutex_mid);
 	}
-	free(path);
-
-	pthread_mutex_unlock(&mutex_rgt);
 	pthread_exit(0);
 }
-void *thread_top(void *data){
+void *thread_lft(){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_top);
-	free(top_buffer);
 
-	char *path;
+	while(!(status & STATUS_QUIT_PROGRAM)){
-	if((path=getcwd(NULL, 0)) == NULL) {
+		pthread_mutex_lock(&mutex_lft);
-		top_buffer = malloc(sizeof("cannot open directory"));
+		pthread_cond_wait(&cond_lft, &mutex_lft);
-		top_width = sizeof("cannot open directory");
+		unsigned int local_status = status;
-		top_buffer = "cannot open directory";
+
-	} else {
+		char *path;
-		top_buffer = getcwd(NULL, 0);
+		if((path=getcwd(NULL, 0)) == NULL) {
-		top_width = strlen(top_buffer);
+			lft_content = malloc(sizeof(file));
+			lft_content[0].file_name = "cannot open directory";
+			lft_file_count = 1;
+		} else {
+
+			path[strrchr(path, '/')-path] = '\0';
+			path[0] = '/';
+
+			if (local_status & STATUS_RELOAD_DIRECTORY) {
+				lft_file_count = get_dir_size(path);
+				free(lft_content);
+				lft_content = malloc(lft_file_count * sizeof(file));
+				memset(lft_content, '\0', lft_file_count * sizeof(file));
+				get_dir_content(path, &lft_file_count, lft_content);
+			}
+
+		}
+		free(path);
+		pthread_mutex_unlock(&mutex_lft);
 	}
+	pthread_exit(0);
 
-	free(path);
+
-	pthread_mutex_unlock(&mutex_top);
+}
+void *thread_rgt(){
+
+	file file_current;
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_rgt);
+		pthread_cond_wait(&cond_rgt, &mutex_rgt);
+
+
+		pthread_mutex_lock(&mutex_mid);
+		char *path;
+		if (mid_file_count != 0) {
+			path = malloc(strlen(mid_content[selected_file_current].file_name) + 1);
+			strcpy(path, mid_content[selected_file_current].file_name);
+		} else {
+			path = malloc(sizeof(char));
+			path[0] = '\0';
+		}
+		file_current.file_type = mid_content[selected_file_current].file_type;
+		file_current.file_size = mid_content[selected_file_current].file_size;
+		file_current.status = mid_content[selected_file_current].status;
+		pthread_mutex_unlock(&mutex_mid);
+
+		if (mid_content[selected_file_current].permissions & S_IRUSR) {
+			if (file_current.file_type &= FILE_TYPE_DIR) {
+				#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
+				images_clear();
+				#endif
+
+				unsigned long i = 0;
+				for (i = 0; i < rgt_file_count; i++) {
+					if (rgt_content[i].file_name) {
+						free(rgt_content[i].file_name);
+					}
+				}
+				free(rgt_content);
+
+				rgt_file_count = get_dir_size(path);
+				rgt_content = malloc(rgt_file_count * sizeof(file));
+				memset(rgt_content, '\0', rgt_file_count * sizeof(file));
+				get_dir_content(path, &rgt_file_count, rgt_content);
+				rgt_content[0].status &= ~FILE_STATUS_FILE_OPEN;
+
+				free(rgt_buffer);
+				rgt_buffer = malloc(sizeof(char));
+				rgt_buffer[0] = '\0';
+			} else if ((status & STATUS_DELTA_TIME) != STATUS_DELTA_TIME) {
+
+				unsigned long i = 0;
+				for (i = 0; i < rgt_file_count; i++) {
+					if (rgt_content[i].file_name) {
+						free(rgt_content[i].file_name);
+					}
+				}
+				free(rgt_content);
+				rgt_file_count = 0;
+				rgt_content = malloc(sizeof(file));
+
+				free(rgt_buffer);
+				rgt_content->file_type = FILE_TYPE_OPEN_FILE;
+				rgt_content->status = FILE_STATUS_HOVER;
+				rgt_buffer = preview_file(path, file_current.file_size);
+			}
+		} else {
+			unsigned long i = 0;
+			for (i = 0; i < rgt_file_count; i++) {
+				if (rgt_content[i].file_name) {
+					free(rgt_content[i].file_name);
+				}
+			}
+			free(rgt_content);
+			rgt_file_count = 0;
+			rgt_content = malloc(sizeof(file));
+
+			free(rgt_buffer);
+			rgt_buffer = malloc(sizeof(char));
+			rgt_buffer[0] = '\0';
+		}
+
+		free(path);
+
+		pthread_mutex_unlock(&mutex_rgt);
+	}
 	pthread_exit(0);
 }
-void *thread_btm(void *data){
+void *thread_top(){
-	unsigned int status = *(unsigned int*)data;
-	pthread_mutex_lock(&mutex_btm);
-	pthread_mutex_lock(&mutex_wait);
-	wait_count++;
-	pthread_cond_wait(&cond_wait, &mutex_wait);
-	wait_count--;
-	pthread_mutex_unlock(&mutex_wait);
 
-	free(btm_buffer);
+	while(!(status & STATUS_QUIT_PROGRAM)){
-	int buffer_width = terminal_width;
+		pthread_mutex_lock(&mutex_top);
-	btm_buffer = malloc(buffer_width);
+		pthread_cond_wait(&cond_top, &mutex_top);
-	memset(btm_buffer, 0, buffer_width);
+
-	btm_buffer[0] = (S_ISDIR(file_current->permissions))  ? 'd' : '-';
+		free(top_buffer);
-	btm_buffer[1] = (file_current->permissions & S_IRUSR) ? 'r' : '-';
+
-        btm_buffer[2] = (file_current->permissions & S_IWUSR) ? 'w' : '-';
+		char *path;
-        btm_buffer[3] = (file_current->permissions & S_IXUSR) ? 'x' : '-';
+		if((path=getcwd(NULL, 0)) == NULL) {
-        btm_buffer[4] = (file_current->permissions & S_IRGRP) ? 'r' : '-';
+			top_buffer = malloc(sizeof("cannot open directory"));
-        btm_buffer[5] = (file_current->permissions & S_IWGRP) ? 'w' : '-';
+			top_width = sizeof("cannot open directory");
-        btm_buffer[6] = (file_current->permissions & S_IXGRP) ? 'x' : '-';
+			top_buffer = "cannot open directory";
-        btm_buffer[7] = (file_current->permissions & S_IROTH) ? 'r' : '-';
+		} else {
-        btm_buffer[8] = (file_current->permissions & S_IWOTH) ? 'w' : '-';
+			top_buffer = malloc(strlen(path)+1);
-        btm_buffer[9] = (file_current->permissions & S_IXOTH) ? 'x' : '-';
+			memcpy(top_buffer, path, strlen(path)+1);
+			top_width = strlen(top_buffer);
+		}
+
+		free(path);
+		pthread_mutex_unlock(&mutex_top);
+	}
+	pthread_exit(0);
+}
+void *thread_btm(){
+	char *path = NULL;
+	char *ui_btm_right_block = malloc(sizeof(char));
+	unsigned int ui_btm_right_block_size = 0;
+	unsigned int buffer_width = 0;
+
+	while(!(status & STATUS_QUIT_PROGRAM)){
+		pthread_mutex_lock(&mutex_btm);
+		pthread_cond_wait(&cond_btm, &mutex_btm);
+		unsigned int local_status = btm_status;
 
 
-	pthread_mutex_unlock(&mutex_btm);
+		if (local_status & (STATUS_RUN_BACKEND | STATUS_RELOAD_DIRECTORY)) {
+			/*{{{ parse storage info; the fold of shame*/
+			pthread_mutex_lock(&mutex_mid);
+			unsigned long i;
+			float total_dir_size = 0;
+			for(i = 0; i < mid_file_count; i++) {
+				if ((mid_content[i].file_type & (FILE_TYPE_DIR)) != FILE_TYPE_DIR) {
+					total_dir_size += mid_content[i].file_size;
+				}
+			}
+			pthread_mutex_unlock(&mutex_mid);
+
+
+			if (path != NULL) {
+				/* sometimes NULL remains, need to do deeper analysis soon */
+				free(path);
+				path = NULL;
+			} else {
+				volatile static int debug_thread_btm;
+				debug_thread_btm++;
+			}
+			free(ui_btm_right_block);
+
+			path = getcwd(NULL, 0);
+			struct statvfs fs;
+			statvfs(path, &fs);
+
+			float disk_size_free =  fs.f_bsize * fs.f_bavail;
+
+			float parsed_number[2] = { 0 };
+
+
+
+			char size_index[2] = { 0 };
+			if (total_dir_size > 1) {
+				size_index[0] = -1;
+				while (total_dir_size > 1 && size_index[0] < size_unit_count) {
+					parsed_number[0]=total_dir_size;
+					size_index[0]++;
+					total_dir_size /= 1024;
+				}
+			} else {
+				size_index[0] = 0;
+				parsed_number[0] = 0;
+			}
+
+			if (disk_size_free > 1) {
+				size_index[1] = -1;
+				while (disk_size_free > 1 && size_index[1] < size_unit_count) {
+					parsed_number[1]=disk_size_free;
+					size_index[1]++;
+					disk_size_free /= 1024;
+				}
+			} else {
+				size_index[1] = 0;
+			}
+			if (size_index[0] > 0 && size_index[1] > 0) {
+				ui_btm_right_block_size = snprintf(NULL, 0, "%0.2lf%c %s %0.2lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left)+1;
+				ui_btm_right_block = malloc(ui_btm_right_block_size);
+				sprintf(ui_btm_right_block, "%0.2lf%c %s %0.2lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left);
+			} else if (size_index[0] <= 0 && size_index[1] >  0) {
+				ui_btm_right_block_size = snprintf(NULL, 0, "%0.0lf%c %s %0.2lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left)+1;
+				ui_btm_right_block = malloc(ui_btm_right_block_size);
+				sprintf(ui_btm_right_block, "%0.0lf%c %s %0.2lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left);
+			} else if (size_index[0] >  0 && size_index[1] <= 0) {
+				ui_btm_right_block_size = snprintf(NULL, 0, "%0.2lf%c %s %0.0lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left)+1;
+				ui_btm_right_block = malloc(ui_btm_right_block_size);
+				sprintf(ui_btm_right_block, "%0.2lf%c %s %0.0lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left);
+			} else {
+				ui_btm_right_block_size = snprintf(NULL, 0, "%0.0lf%c %s %0.0lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left)+1;
+				ui_btm_right_block = malloc(ui_btm_right_block_size);
+				sprintf(ui_btm_right_block, "%0.0lf%c %s %0.0lf%c %s", parsed_number[0], size_unit[(unsigned)size_index[0]], ui_btm_current_dir_size, parsed_number[1], size_unit[(unsigned)size_index[1]], ui_btm_text_storage_left);
+			}
+			/*}}}*/
+		}
+
+		if (buffer_width != terminal_width) {
+			buffer_width = terminal_width;
+			free(btm_buffer);
+			btm_buffer = malloc(buffer_width);
+			memset(btm_buffer, ' ', buffer_width/2);
+		}
+		memset(btm_buffer + (buffer_width/2), ' ', buffer_width/2);
+		btm_buffer[buffer_width] = '\0';
+
+		memcpy(btm_buffer + buffer_width - ui_btm_right_block_size, ui_btm_right_block, ui_btm_right_block_size);
+
+		btm_buffer[0] = (S_ISDIR(mid_content[selected_file_current].permissions))  ? 'd' : '-';
+		btm_buffer[1] = (mid_content[selected_file_current].permissions & S_IRUSR) ? 'r' : '-';
+		btm_buffer[2] = (mid_content[selected_file_current].permissions & S_IWUSR) ? 'w' : '-';
+		btm_buffer[3] = (mid_content[selected_file_current].permissions & S_IXUSR) ? 'x' : '-';
+		btm_buffer[4] = (mid_content[selected_file_current].permissions & S_IRGRP) ? 'r' : '-';
+		btm_buffer[5] = (mid_content[selected_file_current].permissions & S_IWGRP) ? 'w' : '-';
+		btm_buffer[6] = (mid_content[selected_file_current].permissions & S_IXGRP) ? 'x' : '-';
+		btm_buffer[7] = (mid_content[selected_file_current].permissions & S_IROTH) ? 'r' : '-';
+		btm_buffer[8] = (mid_content[selected_file_current].permissions & S_IWOTH) ? 'w' : '-';
+		btm_buffer[9] = (mid_content[selected_file_current].permissions & S_IXOTH) ? 'x' : '-';
+
+
+
+		pthread_mutex_unlock(&mutex_btm);
+	}
 	pthread_exit(0);
 }
 
@@ -293,11 +385,6 @@ void threading_init(){
 	rgt_content->file_name = malloc(sizeof(char));
 	rgt_content->file_name[0] = '\0';
 
-	file_current = malloc(sizeof(file));
-	file_current->file_type = 0;
-	file_current->file_size = 0;
-	file_current->file_name = malloc(sizeof(char));
-	file_current->file_name[0] = '\0';
 
 	volatile char vol; /* needed to make sure higher optimization steps dont move these around */
 	vol = pthread_mutex_init(&mutex_top, NULL);
@@ -306,8 +393,11 @@ void threading_init(){
 	vol = pthread_mutex_init(&mutex_btm, NULL);
 	vol = pthread_mutex_init(&mutex_rgt, NULL);
 	vol = pthread_mutex_init(&mutex_selection, NULL);
-	vol = pthread_mutex_init(&mutex_wait, NULL);
+	vol = pthread_cond_init(&cond_rgt, NULL);
-	vol = pthread_cond_init(&cond_wait, NULL);
+	vol = pthread_cond_init(&cond_lft, NULL);
+	vol = pthread_cond_init(&cond_mid, NULL);
+	vol = pthread_cond_init(&cond_top, NULL);
+	vol = pthread_cond_init(&cond_btm, NULL);
 	vol;
 	selected_file_current = 0;
 	selected_file_last = 0;

threading.h

@@ -1,10 +1,14 @@
 #include <curses.h>
-#include "threading.c"
 
-void *thread_lft(void *data);
+#ifndef THREADING_GUARD
-void *thread_mid(void *data);
+#define THREADING_GUARD
-void *thread_rgt(void *data);
+#include "threading.c"
-void *thread_top(void *data);
+#endif
-void *thread_btm(void *data);
+
+void *thread_lft();
+void *thread_mid();
+void *thread_rgt();
+void *thread_top();
+void *thread_btm();
 void threading_init();
 void threading_free();

window.c

@@ -5,6 +5,8 @@
 #include "defines.h"
 #include "dir.h"
 
+extern unsigned int terminal_height;
+extern unsigned int terminal_width;
 extern unsigned int status;
 extern char *input;
 
@@ -42,15 +44,13 @@ void window_top(WINDOW *win){
 		wattroff(win, COLOR_PAIR(COLOR_PATH));
 		pthread_mutex_unlock(&mutex_top);
 	} else {
-		wprintw(win,"loading"); 
+		mvwaddstr(win, 0, terminal_width/2, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_btm(WINDOW *win){
 	werase(win);
-	unsigned long local_width;
+
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_btm) == 0) {
 		if (*top_buffer != ' ') { /*printing ' ' (standard initialized value, see threading_init) makes valgrind throw a fuss*/
 			mvwprintw(win, 0, 0, "%s", btm_buffer);
@@ -59,58 +59,48 @@ void window_btm(WINDOW *win){
 		/*the printing of the input char is done in user_interactions*/
 		/*the printing of all possible inputs are done in user_interactions */
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, 0, terminal_width/2, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_lft(WINDOW *win){
 	werase(win);
-	box(win, 0, 0);
 
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_lft) == 0) {
 		print_dir(win, 0, &lft_file_count, lft_content);
 		pthread_mutex_unlock(&mutex_lft);
 
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, terminal_height/2, terminal_width/8, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_mid(WINDOW *win){
 	werase(win);
-	box(win, 0, 0);
 
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_mid) == 0) {
 		if (mid_file_count == 0) {
-			mvwprintw(win, 0, 0, "empty");
+			mvwaddstr(win, 0, 0, "empty");
 		} else {
 			print_dir(win, 1, &mid_file_count, mid_content);
 		}
 		pthread_mutex_unlock(&mutex_mid);
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, terminal_height/2, terminal_width/4, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }
 void window_rgt(WINDOW *win){
 	werase(win);
-	box(win, 0, 0);
 
-	unsigned long local_width;
-	unsigned long local_height;
-	getmaxyx(win, local_height, local_width);
 	if (pthread_mutex_trylock(&mutex_rgt) == 0) {
 		if (rgt_file_count == 0) {
 			if (rgt_content[0].file_type == FILE_TYPE_OPEN_FILE) {
-				mvwprintw(win, 0, 0, "%s", rgt_buffer);
+				mvwaddnstr(win, 0, 0, rgt_buffer, (terminal_width/2) * terminal_width);
+			} else if (rgt_content->permissions & S_IRUSR) {
+				mvwaddstr(win, 0, 0, "not accessible");
 			} else {
-				mvwprintw(win, 0, 0, "empty");
+				mvwaddstr(win, 0, 0, "empty");
 			}
 
 
@@ -119,7 +109,7 @@ void window_rgt(WINDOW *win){
 		}
 		pthread_mutex_unlock(&mutex_rgt);
 	} else {
-		mvwprintw(win, local_height/2, local_width/2, "LOADING"); 
+		mvwaddstr(win, terminal_height/2, terminal_width/4, "LOADING"); 
 		status |= STATUS_UPDATE_SCREEN_0;
 	}
 }