-fsanitize=address related stuff

Makefile

@@ -1,7 +1,6 @@
 CC := gcc
 CFLAGS := -Wall -Wextra -O2 -flto=auto
-CURSES := -lncursesw -ltinfow #utf8 support
-#CURSES := -lncurses -tinfo #no utf8
+CURSES := $(shell pkg-config --libs ncursesw)
 CFLAGS_DEBUG := $(CFLAGS) -g
 CFLAGS_PROFILE := $(CFLAGS) -pg
 GDB := gdb --tui ./th

backend.c

@@ -1,14 +1,42 @@
 #include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
+#include "config.h"
 
-char* concat(const char *s1, const char *s2){
-    const size_t len1 = strlen(s1);
-    const size_t len2 = strlen(s2);
-    char *result = malloc(len1 + len2 + 1);
-    memcpy(result, s1, len1);
-    memcpy(result + len1, s2, len2 + 1);
-    return result;
+#define concat(out, s1, s2, _free) { \
+	concat## _free(out, s1, s2); \
 }
+
+#define concat0(out, s1, s2) \
+	char *result = malloc(strlen(s1) + strlen(s2) + 1); \
+	memcpy(result, s1, strlen(s1)); \
+	memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
+	out = result;
+	
+
+#define concat1(out, s1, s2)  \
+	char *result = malloc(strlen(s1) + strlen(s2) + 1); \
+	memcpy(result, s1, strlen(s1)); \
+	memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
+	free(s1); \
+	out = result;
+
+#define concat2(out, s1, s2)  \
+	char *result = malloc(strlen(s1) + strlen(s2) + 1); \
+	memcpy(result, s1, strlen(s1)); \
+	memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
+	free(s2); \
+	out = result;
+
+#define concat3(out, s1, s2)  \
+	char *result = malloc(strlen(s1) + strlen(s2) + 1); \
+	memcpy(result, s1, strlen(s1)); \
+	memcpy(result + strlen(s1), s2, strlen(s2) + 1); \
+	free(s1); \
+	free(s2); \
+	out = result;
+
+
 char* smartstrcasestr(const char *haystack, const char *needle){
 	char smart = 0;
 	char *ret;
@@ -52,3 +80,29 @@ char* smartstrcasestr(const char *haystack, const char *needle){
 	return ret;
 }
 
+char* parse_cmd_char(const char *cmd, const char *path){
+	char *index = strstr(cmd, SETTINGS_COMMAND_REPLACE_STR);
+	char *out;
+
+	if (index) {
+		out = malloc(strlen(cmd) + 1 + strlen(path) + 1);
+		char *o = out;
+		memcpy(out, cmd, index - cmd);
+		o += index-cmd;
+		*o = '\"';
+		o++;
+		memcpy(o, path, strlen(path));
+		o += strlen(path);
+		*o = '\"';
+		memcpy(o+1, index + 1, strlen(index+1));
+		*(o+strlen(index+1)+1) = '\0';
+		return out;
+	} else {
+		concat(out, cmd, " ./\"", 0);
+		concat(out, out, path, 1);
+		concat(out, out, "\"", 1);
+	}
+
+	return out;
+
+}

backend.h

@@ -5,5 +5,7 @@
 #endif
 
 
-char* concat(const char *s1, const char *s2);
+/*char* concat(const char *s1, const char *s2);*/
 char* smartstrcasestr(const char *haystack, const char *needle);
+char* parse_cmd_char(const char *cmd, const char *path);
+

config.h

@@ -2,6 +2,8 @@
 #define SETTINGS_UEBERZUG_IMAGE_PREVIEW 1	/* 0 is disabled, 1 is enabled, 2 is with caching; depends on ueberzug */
 #define SETTINGS_RELOAD_DIR_DELTA 10		/* 0 is disabled, time in seconds between automatic refresh of dir contents */
 #define SETTINGS_CURSES_TIMEOUT 100		/* read: inopts(3NCURSES), blocking time between user inputs */
+#define SETTINGS_COMMAND_REPLACE_STR "%"	/* if a command in any cmd inside this fle contains this string, it will be replaced with the hovered/selected file name
+						 * as of right now, this character cannot be escaped; i.e ``command\% --arg`` will parse into ``command\path_of_hovered_file --arg``*/
 
 /* {{{ */
 #ifndef CONFIG_GUARD
@@ -19,25 +21,25 @@ static const mimetype mimetype_default_cmd[] = {
 	* file --mime-type -b ./image.gif
 	* gives us "image/gif", thusly if we want to open gif in mpv rather than feh,
 	* we need to define "gif" before "image" */
-	{ "text",	"$EDITOR"			},
-	{ "gif",	"mpv --loop-file=\"inf\""	},
-	{ "image",	"feh"				},
-	{ "video",	"mpv"				},
-	{ "audio",	"mpv"				},
-	{ "pdf",	"zathura"			},
+	{ "text",	"$EDITOR"						},
+	{ "gif",	"nohup mpv --loop-file=\"inf\" % >/dev/null 2>&1 &"	},
+	{ "image",	"feh % >/dev/null 2>&1 &"				},
+	{ "video",	"nohup mpv % >/dev/null 2>&1 &"				},
+	{ "audio",	"mpv"							},
+	{ "pdf",	"zathura"						},
 };
 static const extension file_extension_default_cmd[] = {
 	/* extension	shell command
 	 * similar to mimetype_default_cmd, however it searches for exact string matches
 	 * and is checked before mimetype_default_cmd */
 	{ ".exe",	"wine"},
-	{ ".cbz",	"mcomix"},
-	{ ".cbr",	"mcomix"},
+	{ ".cbz",	"mcomix % &"},
+	{ ".cbr",	"mcomix % &"},
 	{ ".json",	"$EDITOR"},
 	{ ".csv",	"$EDITOR"},
 };
 static const binding key_binding[] = {
-	/*key	action			blackmagic	comment*/
+	/*key		action			blackmagic	comment*/
 	/*you cannot add bindings that include other bindings in its entirety
 	 * possible: mk, mf
 	 * not possible: gg, ggg
@@ -111,6 +113,11 @@ static const char size_unit[] = { 'B', 'K', 'M', 'G', 'T', 'P' }; /* this define
 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 char ui_open_with_text_0[] = "open"; /*ui_open_with_text_0 \"selected_file\" ui_open_with_text_1*/
+static const char ui_open_with_text_1[] = "with:";
+static const char ui_rename_text_0[] = "rename"; /*ui_rename_text_0 \"selected_file\" ui_rename_text_1*/
+static const char ui_rename_text_1[] = "to:";
+static const char ui_delete_text[] = "delete:";
 
 /* {{{ */
 static const unsigned long binding_count = sizeof(key_binding) / sizeof(binding);
@@ -127,5 +134,10 @@ 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;
+static const char ui_open_with_text_0[];
+static const char ui_open_with_text_1[];
+static const char ui_rename_text_0[];
+static const char ui_rename_text_1[];
+static const char ui_delete_text[];
 #endif
 /* }}} */

dir.c

@@ -83,11 +83,7 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 			dir_content[i].file_size = file->st_size;
 			dir_content[i].permissions = file->st_mode;
 
-			if (S_ISDIR(file->st_mode)) {
-				dir_content[i].file_type = FILE_TYPE_DIR;
-				dir_content[i].color_pair = COLOR_DIR;
-				dir_content[i].file_size = get_dir_size(full_path);
-			} else if (S_ISLNK(file->st_mode)) {
+			if (S_ISLNK(file->st_mode)) {
 				stat(full_path, file);
 				if (S_ISDIR(file->st_mode)) {
 					dir_content[i].file_type = FILE_TYPE_DIR | FILE_TYPE_SYMLINK;
@@ -97,6 +93,10 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 					dir_content[i].file_type =  FILE_TYPE_REGULAR | FILE_TYPE_SYMLINK;
 					dir_content[i].color_pair = COLOR_SYMLINK;
 				}
+			} else if (S_ISDIR(file->st_mode)) {
+				dir_content[i].file_type = FILE_TYPE_DIR;
+				dir_content[i].color_pair = COLOR_DIR;
+				dir_content[i].file_size = get_dir_size(full_path);
 			} else if (file->st_mode & S_IXUSR) {
 				dir_content[i].file_type = FILE_TYPE_EXEC;
 				dir_content[i].color_pair = COLOR_EXEC;
@@ -139,18 +139,13 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 			}
 			free(full_path);
 			free(file);
+			free(entry[i]);
 		}
 	}
 
 	qsort(dir_content, *dir_file_count, sizeof(file), order_func);
 	
-	for (i = 0; i < *dir_file_count; i++) {
-		free(entry[i]);
-	}
-	if (entry != NULL) {
-		free(entry);
-	} else {
-	}
+	free(entry);
 
 }
 
@@ -259,7 +254,7 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 				file_name[printable_size + strlen(extension)-1] = '\0';
 				file_name[printable_size - 2] = '~';
 			} else {
-				file_name = malloc(printable_size-1);
+				file_name = malloc(printable_size);
 				memcpy(file_name, dir_content[i].file_name, printable_size);
 				file_name[printable_size-2] = '~';
 				file_name[printable_size-1] = '\0';
@@ -315,19 +310,12 @@ 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);
 		}
-		if (file_name != NULL) {
-			/* sometimes NULL remains, need to do deeper analysis soon */
-			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));
 		} else {
 			wattroff(win, COLOR_PAIR(dir_content[i].color_pair));
 		}
+		free(file_name);
 
 	}
 	free(bg);
@@ -335,13 +323,11 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 
 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) {
+	if (selected_file_current != selected_file_last && selected_file_last <= mid_file_count) {
 		mid_content[selected_file_last].status &= ~FILE_STATUS_HOVER;
 		ret = 1;
 	} else {
@@ -352,7 +338,7 @@ char update_selected_file(){
 	return ret;
 }
 void dir_set_selected_file_current(unsigned long selected_file_current){
-	if (mid_content->file_name[0] != '\0') {
+	if (mid_content->file_name) {
 		current_dir->selected_file_current = selected_file_current;
 	}
 }
@@ -392,7 +378,9 @@ void dir_init(){
 }
 
 void recursive_delete(file current_file){
-	if (current_file.file_type & FILE_TYPE_DIR) {
+	if (S_ISLNK(current_file.permissions)) {
+		remove(current_file.file_name);
+	} else 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);

file_previews.c

@@ -33,6 +33,7 @@ char* get_mimetype(char *path){
 	FILE *cmd_open = popen(cmd, "r");
 	char *line = NULL;
 	size_t size = 0;
+	free(cmd);
 	if (getline(&line, &size, cmd_open) != -1){
 		pclose(cmd_open);
 		return line;
@@ -85,8 +86,9 @@ char* text(char *path, unsigned long *file_size){
 	}
 }
 char* generic(char *path){
-	char *cmd = concat("file ./\"", path);
-	cmd = concat(cmd, "\"");
+	char *cmd;
+	concat(cmd, "file ./\"", path, 0);
+	concat(cmd, cmd, "\"", 1);
 
 	FILE *cmd_open = popen(cmd, "r");
 	char *line = NULL;

interactions.c

@@ -181,7 +181,7 @@ void move_down(unsigned long passes){
 	selected_file_current += passes;
 
 	update_selected_file();
-	dir_set_selected_file_current(selected_file_current);
+	current_dir->selected_file_current = selected_file_current;
 
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
 	pthread_mutex_unlock(&mutex_selection);
@@ -198,9 +198,10 @@ void move_up(unsigned long passes){
 	}
 
 	update_selected_file();
-	dir_set_selected_file_current(selected_file_current);
+	current_dir->selected_file_current = selected_file_current;
 	
-	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK);
+	
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
 	pthread_mutex_unlock(&mutex_selection);
 }
 void move_left(unsigned long passes){
@@ -216,7 +217,9 @@ void move_left(unsigned long passes){
 			selected_file_current = dir_get_selected_file_current();
 		}
 	}
-	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
+	update_selected_file();
+	current_dir->selected_file_current = selected_file_current;
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_RELOAD_FULL | STATUS_RELOAD_DIRECTORY);
 }
 void move_right(){
 	if (mid_content->file_name[0] == '\0') {
@@ -236,9 +239,10 @@ void move_right(){
 		if (extension != NULL) {
 			for (i = 0; i < file_extension_default_count; i++) {
 				if (strstr(extension, file_extension_default_cmd[i].file_extension)) {
-					char *cmd = concat(file_extension_default_cmd[i].command, " ./\"");
-					cmd = concat(cmd, mid_content[selected_file_current].file_name);
-					cmd = concat(cmd, "\"");
+					char *cmd;
+					concat(cmd, file_extension_default_cmd[i].command, " ./\'", 0);
+					concat(cmd, cmd, mid_content[selected_file_current].file_name, 1);
+					concat(cmd, cmd, "\'", 1);
 
 
 					if (system(cmd) == -1) {
@@ -246,7 +250,7 @@ void move_right(){
 					}
 					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);
+					status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_RELOAD_FULL | STATUS_RELOAD_DIRECTORY);
 					break;
 				}
 			}
@@ -255,17 +259,12 @@ void move_right(){
 			for (i = 0; i < mimetype_default_count; i++) {
 				if (strstr(mime, mimetype_default_cmd[i].mimetype)) {
 
-					char *cmd = concat(mimetype_default_cmd[i].command, " ./\"");
-					cmd = concat(cmd, mid_content[selected_file_current].file_name);
-					cmd = concat(cmd, "\"");
-				
-
-
+					char *cmd = parse_cmd_char(mimetype_default_cmd[i].command, mid_content[selected_file_current].file_name);
 					if (system(cmd) == -1) {
 						/*do nothing*/
 					}
 					curs_set(1); /*for some reason, 1 here turns it invisible once again */
-					status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
+					status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_RELOAD_FULL | STATUS_RELOAD_DIRECTORY);
 					break;
 
 				}
@@ -274,11 +273,11 @@ void move_right(){
 		free(mime);
 	}
 	update_selected_file();
-	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_RELOAD_FULL | STATUS_RELOAD_DIRECTORY);
 }
 void toggle_hidden_files(){
 	file_modifiers ^= FILE_MODIFIERS_HIDDEN_FILES;
-	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY);
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_RELOAD_FULL | STATUS_RELOAD_DIRECTORY);
 }
 void toggle_selection(){
 	pthread_mutex_lock(&mutex_selection);
@@ -293,15 +292,15 @@ 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);
+	current_dir->selected_file_current = selected_file_current;
+	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_0);
 	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);
+	current_dir->selected_file_current = selected_file_current;
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK);
 	pthread_mutex_unlock(&mutex_selection);
 }
@@ -315,8 +314,11 @@ void open_with(){
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION, terminal_width/3); /*the div3 just looks cool*/
 
-	btm_buffer = concat("open \"", mid_content[selected_file_current].file_name);
-	btm_buffer = concat(btm_buffer, "\" with:");
+	concat(btm_buffer, ui_open_with_text_0, " \'", 0);
+	concat(btm_buffer, btm_buffer, mid_content[selected_file_current].file_name, 1);
+	concat(btm_buffer, btm_buffer, "\' ", 1);
+	concat(btm_buffer, btm_buffer, ui_open_with_text_1, 1);
+
 
 	window_btm(win_b, 1);
 
@@ -328,17 +330,20 @@ void open_with(){
 
 	
 	if (err == 0) {
-		char *cmd = concat(str, " ./\"");
-		cmd = concat(cmd, mid_content[selected_file_current].file_name);
-		cmd = concat(cmd, "\"");
+		char *cmd;
+		concat(cmd, str, " ./\'", 0);
+		concat(cmd, cmd, mid_content[selected_file_current].file_name, 1);
+		concat(cmd, cmd, "\'", 1);
 
 		#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
 		images_clear();
 		#endif
 
+		endwin();
 		if (system(cmd) == -1) {
 			FAIL("open_with", "creating subcommand failed unhandled");
 		}
+		initscr();
 	}
 
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
@@ -358,8 +363,10 @@ void rename_hovered(){
 	mvwin(win_b, terminal_height-6, 0);
 	wresize(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION, terminal_width/3); /*the div3 just looks cool*/
 
-	btm_buffer = concat("rename \"", mid_content[selected_file_current].file_name);
-	btm_buffer = concat(btm_buffer, "\" to:");
+	concat(btm_buffer, ui_rename_text_0, " \'", 0);
+	concat(btm_buffer, btm_buffer, mid_content[selected_file_current].file_name, 1);
+	concat(btm_buffer, btm_buffer, "\' ", 1);
+	concat(btm_buffer, btm_buffer, ui_rename_text_1, 1);
 
 	window_btm(win_b, 1);
 
@@ -370,10 +377,11 @@ void rename_hovered(){
 
 	
 	if (!err) {
-		char *cmd = concat("mv ./\"", mid_content[selected_file_current].file_name);
-		cmd = concat(cmd, "\" ./\"");
-		cmd = concat(cmd, str);
-		cmd = concat(cmd, "\"");
+		char *cmd;
+		concat(cmd, "mv ./\'", mid_content[selected_file_current].file_name, 0);
+		concat(cmd, cmd, "\' ./\'", 1);
+		concat(cmd, cmd, str, 1);
+		concat(cmd, cmd, "\'", 1);
 		 
 		if (system(cmd) == -1) {
 			FAIL("rename_hovered", "mv or creating subcommand failed"); 
@@ -397,53 +405,33 @@ void delete(){
 
 	unsigned int i = 0;
 	unsigned int hits = 0;
-	char *file_str = " ";
+	char *file_str = "";
 	for (i = 0; i < mid_file_count; i++) {
 		if (mid_content[i].status & FILE_STATUS_SELECTED) {
-			file_str = concat(file_str, "\"");
-			file_str = concat(file_str, mid_content[i].file_name);
-			file_str = concat(file_str, "\" ");
+			concat(file_str, file_str, "\'", 0);
+			concat(file_str, file_str, mid_content[i].file_name, 1);
+			concat(file_str, file_str, "\' ", 1);
 			hits++;
 		}
 	}
 
 	werase(win_b);
 	mvwin(win_b, terminal_height-6, 0);
-	if (strlen(file_str) < (BTM_WINDOW_HEIGHT_ON_STR_INTERACTION-1) * (terminal_width/3)) {
-		wresize(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION, terminal_width/3); /*the div3 just looks cool*/
-		btm_buffer = malloc(BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * (terminal_width/3));
-		memset(btm_buffer, ' ', (BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * (terminal_width/3)));
+	wresize(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION, terminal_width); 
+	btm_buffer = malloc(BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width);
+	memset(btm_buffer, ' ', BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width);
 
-		memcpy(btm_buffer, "delete: ",strlen("delete: "));
-		if (hits) {
-			memcpy(btm_buffer + strlen("delete: "), file_str, strlen(file_str));
-		} else {
-			btm_buffer[strlen("delete: ")] = '"';
-			memcpy(btm_buffer + strlen("delete: ") + sizeof(char), mid_content[selected_file_current].file_name, strlen(mid_content[selected_file_current].file_name)-1);
-			btm_buffer[strlen("delete: ") + sizeof(char) + strlen(mid_content[selected_file_current].file_name)] = '"';
-		}
+	memcpy(btm_buffer, ui_delete_text ,strlen(ui_delete_text));
 
-		memcpy(btm_buffer + (BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * (terminal_width/3) - (terminal_width/3)) , "(y/N)", strlen("(y/N)"));
-		btm_buffer[BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * (terminal_width/3)] = '\0';
+	/*this horrendous check tries to copy everything until the last line, while keeping said last line unwritten*/
+	/*lets hope im never gonna need to format something like this ever again*/
+	memcpy(btm_buffer + strlen(ui_delete_text)+1, file_str, 
+		(strlen(file_str) > ((BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width) - terminal_width) ?
+			((BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width) - terminal_width) : 
+			strlen(file_str)));
 
-	} else {
-		/*since more data is present than can be represented using div3, we do the uncool thing*/
-		wresize(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION, terminal_width); 
-		btm_buffer = malloc(BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width);
-		memset(btm_buffer, ' ', BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width);
-
-		memcpy(btm_buffer, "delete: ",strlen("delete: "));
-
-		/*this horrendous check tries to copy everything until the last line, while keeping said last line unwritten*/
-		/*lets hope im never gonna need to format something like this ever again*/
-		memcpy(btm_buffer + strlen("delete: "), file_str, 
-			(strlen(file_str) > ((BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width) - terminal_width) ?
-				((BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width) - terminal_width) : 
-				strlen(file_str)));
-
-		memcpy(btm_buffer + (BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width - terminal_width) , "(y/N)", strlen("(y/N)"));
-		btm_buffer[BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width] = '\0';
-	}
+	memcpy(btm_buffer + (BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width - terminal_width) , "(y/N)", strlen("(y/N)"));
+	btm_buffer[BTM_WINDOW_HEIGHT_ON_STR_INTERACTION * terminal_width-1] = '\0';
 
 
 
@@ -497,7 +485,7 @@ void makedir(){
 	int err = read_string(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION - 1, 0, str);
 
 	if (!err) {
-		btm_buffer = concat(btm_buffer, str);
+		concat(btm_buffer, btm_buffer, str, 0);
 		mode_t mask = umask(0);
 		mkdir(str, 0755); /*magic number from default permissions as created by mkdir*/
 		umask(mask);
@@ -527,7 +515,7 @@ void makefile(){
 	int err = read_string(win_b, BTM_WINDOW_HEIGHT_ON_STR_INTERACTION - 1, 0, str);
 
 	if (!err) {
-		btm_buffer = concat(btm_buffer, str);
+		concat(btm_buffer, btm_buffer, str, 0);
 		FILE *fp;
 		fp = fopen(str, "w");
 		fclose(fp);
@@ -590,7 +578,7 @@ void jump_to_dir(unsigned long passes, int index){
 		env_str[env_len-1] = '\0';
 		env_parsed = getenv(env_str);
 		if (env_parsed) {
-			path = concat(env_parsed, (char*)key_binding[index].black_magic + env_len);
+			concat(path, env_parsed, (char*)key_binding[index].black_magic + env_len, 0);
 		} else {
 			path = malloc(strlen((char*)key_binding[index].black_magic));
 			memcpy(path, (char*)key_binding[index].black_magic, strlen((char*)key_binding[index].black_magic)+1);
@@ -636,29 +624,30 @@ void cmd_on_selected(unsigned long passes, int index){
 	pthread_mutex_lock(&mutex_btm);
 
 	char *btm_buffer_tmp = btm_buffer;
+	btm_buffer = "";
 	unsigned int i = 0;
 	unsigned int hits = 0;
-	char *file_str = " ";
+	char *file_str = "";
 	for (i = 0; i < mid_file_count; i++) {
 		if (mid_content[i].status & FILE_STATUS_SELECTED) {
-			file_str = concat(file_str, "\"");
-			file_str = concat(file_str, mid_content[i].file_name);
-			file_str = concat(file_str, "\" ");
+			concat(file_str, file_str, "\'", 0);
+			concat(file_str, file_str, mid_content[i].file_name, 1);
+			concat(file_str, file_str, "\' ", 1);
 			hits++;
 		}
 	}
 
 	if (hits) {
-		btm_buffer = concat(key_binding[index].black_magic, file_str);
+		concat(btm_buffer, key_binding[index].black_magic, file_str, 2);
 	} else {
-		btm_buffer = concat(key_binding[index].black_magic, "\"");
-		btm_buffer = concat(btm_buffer, mid_content[selected_file_current].file_name);
-		btm_buffer = concat(btm_buffer, "\"");
+		concat(btm_buffer, key_binding[index].black_magic, "\'", 0);
+		concat(btm_buffer, btm_buffer, mid_content[selected_file_current].file_name, 1);
+		concat(btm_buffer, btm_buffer, "\'", 1);
 	}
 
-	btm_buffer = concat(btm_buffer, "?");
-	btm_buffer = concat(btm_buffer, "\n\n");
-	btm_buffer = concat(btm_buffer, "(y/N)");
+	concat(btm_buffer, btm_buffer, "?", 1);
+	concat(btm_buffer, btm_buffer, "\n\n", 1);
+	concat(btm_buffer, btm_buffer, "(y/N)", 1);
 
 	werase(win_b);
 	mvwin(win_b, terminal_height-6, 0);
@@ -674,13 +663,14 @@ void cmd_on_selected(unsigned long passes, int index){
 		/* the second loop is used to add "./", wich is not being printed" */
 		char *cmd = malloc(sizeof(char));
 		/* TODO(2025-07-06T07:23:05) IMPORTANT: this really fucks up when the file has a quotation mark in its name */
+		endwin();
 		if (hits) {
 			for (i = 0; i < mid_file_count; i++) {
 				if (mid_content[i].status & FILE_STATUS_SELECTED) {
 					free(cmd);
-					cmd = concat((char*)key_binding[index].black_magic, " \"");
-					cmd = concat(cmd, mid_content[i].file_name);
-					cmd = concat(cmd, "\"");
+					concat(cmd, (char*)key_binding[index].black_magic, " \'", 0);
+					concat(cmd, cmd, mid_content[i].file_name, 1);
+					concat(cmd, cmd, "\'", 1);
 					if (system(cmd) != 0) {
 						/*do nothing*/
 					}
@@ -688,9 +678,9 @@ void cmd_on_selected(unsigned long passes, int index){
 			}
 		} else {
 			free(cmd);
-			cmd = concat((char*)key_binding[index].black_magic, " \"");
-			cmd = concat(cmd, mid_content[selected_file_current].file_name);
-			cmd = concat(cmd, "\"");
+			concat(cmd, (char*)key_binding[index].black_magic, " \'", 0);
+			concat(cmd, cmd, mid_content[selected_file_current].file_name, 1);
+			concat(cmd, cmd, "\'", 1);
 			if (system(cmd) != 0) {
 				/*do nothing*/
 			}
@@ -699,6 +689,7 @@ void cmd_on_selected(unsigned long passes, int index){
 		}
 		/*system(cmd);*/
 		free(cmd);
+		initscr();
 
 	}
 	free(btm_buffer);
@@ -706,9 +697,6 @@ void cmd_on_selected(unsigned long passes, int index){
 
 	status |= (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY | STATUS_UPDATE_SCREEN_RELOAD_FULL);
 
-	if (hits) {
-		free(file_str);
-	}
 	pthread_mutex_unlock(&mutex_btm);
 }
 void yank_text(unsigned long passes, int index){
@@ -716,16 +704,16 @@ void yank_text(unsigned long passes, int index){
 	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);
+		concat(cmd, "echo \'", path, 0);
+		concat(cmd, cmd, "/", 1);
+		concat(cmd, cmd, mid_content[selected_file_current].file_name, 1);
+		concat(cmd, cmd, "\' | ", 1);
+		concat(cmd, cmd, clipboard_cmd, 1);
 		free(path);
 	} else {
-		cmd = concat("echo \"", mid_content[selected_file_current].file_name);
-		cmd = concat(cmd, "\" | ");
-		cmd = concat(cmd, clipboard_cmd);
+		concat(cmd, "echo \'", mid_content[selected_file_current].file_name, 0);
+		concat(cmd, cmd, "\' | ", 1);
+		concat(cmd, cmd, clipboard_cmd, 1);
 	}
 	if (system(cmd) == -1) {
 		/*do nothing*/
@@ -781,18 +769,16 @@ void yank_file(unsigned long passes, int index){
 void paste(){
 	unsigned long i;
 	for (i = 0; i < yank_files.count; i++) {
-		/*TODO(2025-08-14T22:10:44) escape path*/
 		char *cmd;
 		if (yank_files.status & YANK_COPY) {
-			cmd = concat("false | cp -ri ", yank_files.path);
+			concat(cmd, "false | cp -ri \'", yank_files.path, 0);
 		} else {
-			cmd = concat("mv ", yank_files.path);
+			concat(cmd, "mv \'", yank_files.path, 0);
 		}
-		cmd = concat(cmd, "/");
-		cmd = concat(cmd, *yank_files.list);
-		cmd = concat(cmd, " ./");
-		cmd = concat(cmd, *yank_files.list);
-		cmd = concat(cmd, " 2>&1");
+		concat(cmd, cmd, "/", 1);
+		concat(cmd, cmd, *yank_files.list, 1);
+		concat(cmd, cmd, "\' ./", 1);
+		concat(cmd, cmd, " 2>&1", 1);
 		char *line = malloc(INPUT_BUFFER_SIZE);
 		FILE *cmd_open;
 		while (1) {
@@ -802,12 +788,12 @@ void paste(){
 			}
 			if (strstr(line, "are the same file")) {
 				cmd[strlen(cmd)-strlen(" 2>&1")] = '\0';
-				cmd = concat(cmd, "_");
-				cmd = concat(cmd, " 2>&1");
+				concat(cmd, cmd, "_", 1);
+				concat(cmd, cmd, " 2>&1", 1);
 			} else if ((strstr(line, "overwrite"))) { 
 				cmd[strlen(cmd)-strlen(" 2>&1")] = '\0';
-				cmd = concat(cmd, "_");
-				cmd = concat(cmd, " 2>&1");
+				concat(cmd, cmd, "_", 1);
+				concat(cmd, cmd, " 2>&1", 1);
 			} else if ((strstr(line, "No such file or directory"))) { 
 				pclose(cmd_open);
 				break;
@@ -886,7 +872,7 @@ void search(){
 
 	curs_set(0);
 
-	dir_set_selected_file_current(selected_file_current);
+	current_dir->selected_file_current = selected_file_current;
 
 	update_selected_file();
 

main.c

@@ -22,6 +22,7 @@ unsigned int settings;
 unsigned int file_modifiers;
 unsigned int status = (STATUS_RUN_BACKEND | STATUS_UPDATE_SCREEN_MASK | STATUS_RELOAD_DIRECTORY); 
 char *start_path;
+char *global_path;
 time_t *seed;
 
 WINDOW *win_t;
@@ -36,7 +37,6 @@ char *terminal_width_empty_line; /* used in user_interactions */
 void render_pass();
 void init();
 
-
 int main(){
 
 	init();
@@ -91,6 +91,8 @@ int main(){
 			temp_heigth = terminal_height;
 		}
 		if (status & STATUS_RUN_BACKEND) {
+			free(global_path);
+			global_path = getcwd(NULL, 0);
 			pthread_cond_signal(&cond_top);
 			pthread_cond_signal(&cond_mid);
 			pthread_cond_signal(&cond_lft);
@@ -198,6 +200,7 @@ void init() {
 	#endif
 
 	ESCDELAY = 10;
+	global_path = getcwd(NULL, 0);
 	char *start_path = getcwd(NULL, 0);
 	setenv("START_PATH", start_path, 0);
 	free(start_path);

sorting.c

@@ -118,19 +118,13 @@ 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;
 	}
-	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));
-		}
+	time_t num = ((time_t)&sort_random)^((time_t)sort_natural);
+	int i = 1;
+	for (; i < 6; i++) {
+		num += *seed;
+		num ^= num << ((((time_t)&seed)%6)+i);
+		num ^= num >> ((((time_t)&num)%9)+i);
 	}
-	num ^= getpid();
 
 	return ((num%3) - 1);
 

threading.c

@@ -47,6 +47,7 @@ volatile unsigned long selected_file_current = 0;
 volatile unsigned long selected_file_last = 0;
 extern unsigned int terminal_width;
 extern unsigned int status;
+extern char *global_path;
 
 unsigned int btm_status;
 
@@ -58,48 +59,47 @@ void *thread_mid(){
 		pthread_cond_wait(&cond_mid, &mutex_mid);
 		unsigned int local_status = status;
 
-		char *path;
-		if((path=getcwd(NULL, 0)) == NULL) {
+		if (global_path == NULL) {
 			mid_content = malloc(sizeof(file));
 			mid_content->file_name = "cannot open directory";
 			mid_file_count = 1;
-		} else {
+			pthread_mutex_unlock(&mutex_mid);
+			continue;
+		} 
+		char *path = malloc(strlen(global_path)+1);
+		memcpy(path, global_path, strlen(global_path)+1);
 
-
-			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);
+		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';
 
-			btm_status = local_status;
-			pthread_cond_signal(&cond_rgt);
-			pthread_cond_signal(&cond_btm);
+				mid_file_count = 0;
 
+			}
+			update_selected_file();
 		}
+
+		btm_status = local_status;
+		pthread_cond_signal(&cond_rgt);
+		pthread_cond_signal(&cond_btm);
+
 		free(path);
 		pthread_mutex_unlock(&mutex_mid);
 	}
@@ -112,13 +112,18 @@ void *thread_lft(){
 		pthread_cond_wait(&cond_lft, &mutex_lft);
 		unsigned int local_status = status;
 
-		char *path;
-		if((path=getcwd(NULL, 0)) == NULL) {
+		if (global_path == NULL) {
 			lft_content = malloc(sizeof(file));
 			lft_content[0].file_name = "cannot open directory";
 			lft_file_count = 1;
-		} else {
+			pthread_mutex_unlock(&mutex_lft);
+			continue;
+		} 
+		char *path = malloc(strlen(global_path)+1);
+		memcpy(path, global_path, strlen(global_path)+1);
 
+		if (strcmp(path, "/") != 0) {
+			path[strrchr(path, '/')-path+1] = '\0';
 			path[strrchr(path, '/')-path] = '\0';
 			path[0] = '/';
 
@@ -129,8 +134,11 @@ void *thread_lft(){
 				memset(lft_content, '\0', lft_file_count * sizeof(file));
 				get_dir_content(path, &lft_file_count, lft_content);
 			}
-
+		} else {
+			lft_file_count = 0;
 		}
+
+
 		free(path);
 		pthread_mutex_unlock(&mutex_lft);
 	}
@@ -147,20 +155,11 @@ void *thread_rgt(){
 
 
 		pthread_mutex_lock(&mutex_mid);
-		char *path;
-		if (mid_file_count != 0) {
-			path = malloc(strlen(mid_content[selected_file_current].file_name) + 1);
-			memcpy(path, mid_content[selected_file_current].file_name, strlen(mid_content[selected_file_current].file_name)+1);
-		} 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;
+		char *path = mid_content[selected_file_current].file_name;
+		memcpy(&file_current, &mid_content[selected_file_current], sizeof(file));
 		pthread_mutex_unlock(&mutex_mid);
 
-		if (mid_content[selected_file_current].permissions & S_IRUSR) {
+		if (file_current.permissions & S_IRUSR) {
 			if (file_current.file_type &= FILE_TYPE_DIR) {
 				#if SETTINGS_UEBERZUG_IMAGE_PREVIEW != 0
 				images_clear();
@@ -175,14 +174,20 @@ void *thread_rgt(){
 				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;
+				if (rgt_file_count) { /* fails if dir empty */
+					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';
+					free(rgt_buffer);
+					rgt_buffer = malloc(sizeof(char));
+					rgt_buffer[0] = '\0';
+				} else { /* the hovered dir is empty */
+					rgt_content = malloc(sizeof(file));
+					rgt_content->file_type = 0;
+					rgt_content->permissions = mid_content[selected_file_current].permissions; 
+				}
 			} else if ((status & STATUS_DELTA_TIME) != STATUS_DELTA_TIME) {
 
 				unsigned long i = 0;
@@ -215,8 +220,9 @@ void *thread_rgt(){
 			rgt_buffer = malloc(sizeof(char));
 			rgt_buffer[0] = '\0';
 		}
-
+		/*
 		free(path);
+		*/
 
 		pthread_mutex_unlock(&mutex_rgt);
 	}
@@ -230,18 +236,17 @@ void *thread_top(){
 
 		free(top_buffer);
 
-		char *path;
-		if((path=getcwd(NULL, 0)) == NULL) {
+		if(global_path == NULL) {
 			top_buffer = malloc(sizeof("cannot open directory"));
 			top_width = sizeof("cannot open directory");
 			top_buffer = "cannot open directory";
-		} else {
-			top_buffer = malloc(strlen(path)+1);
-			memcpy(top_buffer, path, strlen(path)+1);
-			top_width = strlen(top_buffer);
-		}
+			pthread_mutex_unlock(&mutex_top);
+			continue;
+		} 
+		top_buffer = malloc(strlen(global_path)+1);
+		memcpy(top_buffer, global_path, strlen(global_path)+1);
+		top_width = strlen(top_buffer);
 
-		free(path);
 		pthread_mutex_unlock(&mutex_top);
 	}
 	pthread_exit(0);
@@ -271,16 +276,11 @@ void *thread_btm(){
 			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);
 
+			if(path) {
+				free(path);
+			}
 			path = getcwd(NULL, 0);
 			struct statvfs fs;
 			statvfs(path, &fs);
@@ -337,15 +337,15 @@ void *thread_btm(){
 		if (buffer_width != terminal_width) {
 			buffer_width = terminal_width;
 			free(btm_buffer);
-			btm_buffer = malloc(buffer_width);
-			memset(btm_buffer, ' ', buffer_width/2);
+			btm_buffer = malloc(buffer_width+1);
 		}
-		memset(btm_buffer + (buffer_width/2), ' ', buffer_width/2);
+		memset(btm_buffer, ' ', buffer_width);
 		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[0] = (S_ISLNK(mid_content[selected_file_current].permissions)) ? 'l': 
+				(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' : '-';
@@ -377,13 +377,11 @@ void threading_init(){
 
 	mid_content->file_type = 0;
 	mid_content->file_size = 0;
-	mid_content->file_name = malloc(sizeof(char));
-	mid_content->file_name[0] = '\0';
+	mid_content->file_name = "";
 
 	rgt_content->file_type = 0;
 	rgt_content->file_size = 0;
-	rgt_content->file_name = malloc(sizeof(char));
-	rgt_content->file_name[0] = '\0';
+	rgt_content->file_name = "";
 
 
 	volatile char vol; /* needed to make sure higher optimization steps dont move these around */