/* Our main file browser function. path is the tilde-expanded path we
* start browsing from. */
char *do_browser(char *path, DIR *dir)
{
char *retval = NULL;
int kbinput;
bool old_const_update = ISSET(CONST_UPDATE);
char *prev_dir = NULL;
/* The directory we were in before backing up to "..". */
char *ans = NULL;
/* The last answer the user typed at the statusbar prompt. */
size_t old_selected;
/* The selected file we had before the current selected file. */
functionptrtype func;
/* The function of the key the user typed in. */
curs_set(0);
blank_statusbar();
bottombars(MBROWSER);
wnoutrefresh(bottomwin);
UNSET(CONST_UPDATE);
ans = mallocstrcpy(NULL, "");
change_browser_directory:
/* We go here after we select a new directory. */
/* Start with no key pressed. */
kbinput = ERR;
path = mallocstrassn(path, get_full_path(path));
/* Save the current path in order to be used later. */
path_save = path;
assert(path != NULL && path[strlen(path) - 1] == '/');
/* Get the file list, and set longest and width in the process. */
browser_init(path, dir);
assert(filelist != NULL);
/* Sort the file list. */
qsort(filelist, filelist_len, sizeof(char *), diralphasort);
/* If prev_dir isn't NULL, select the directory saved in it, and
* then blow it away. */
if (prev_dir != NULL) {
browser_select_dirname(prev_dir);
free(prev_dir);
prev_dir = NULL;
/* Otherwise, select the first file or directory in the list. */
} else
selected = 0;
old_selected = (size_t)-1;
titlebar(path);
while (TRUE) {
struct stat st;
int i;
size_t fileline = selected / width;
/* The line number the selected file is on. */
char *new_path;
/* The path we switch to at the "Go to Directory"
* prompt. */
/* Display the file list if we don't have a key, or if the
* selected file has changed, and set width in the process. */
if (kbinput == ERR || old_selected != selected)
browser_refresh();
old_selected = selected;
kbinput = get_kbinput(edit);
#ifndef NANO_TINY
if (kbinput == KEY_WINCH) {
kbinput = ERR;
curs_set(0);
continue;
}
#endif
#ifndef DISABLE_MOUSE
if (kbinput == KEY_MOUSE) {
int mouse_x, mouse_y;
/* We can click on the edit window to select a
* filename. */
if (get_mouseinput(&mouse_x, &mouse_y, TRUE) == 0 &&
wmouse_trafo(edit, &mouse_y, &mouse_x, FALSE)) {
/* longest is the width of each column. There
* are two spaces between each column. */
selected = (fileline / editwinrows) *
(editwinrows * width) + (mouse_y *
width) + (mouse_x / (longest + 2));
/* If they clicked beyond the end of a row,
* select the last filename in that row. */
if (mouse_x > width * (longest + 2))
selected--;
/* If we're off the screen, select the last filename. */
if (selected > filelist_len - 1)
selected = filelist_len - 1;
/* If we selected the same filename as last time,
* put back the Enter key so that it's read in. */
if (old_selected == selected)
unget_kbinput(sc_seq_or(do_enter_void, 0), FALSE, FALSE);
}
}
#endif /* !DISABLE_MOUSE */
func = parse_browser_input(&kbinput);
if (func == total_refresh) {
total_redraw();
} else if (func == do_help_void) {
#ifndef DISABLE_HELP
do_help_void();
/* Perhaps the window dimensions have changed. */
browser_refresh();
curs_set(0);
#else
nano_disabled_msg();
#endif
} else if (func == do_search) {
/* Search for a filename. */
curs_set(1);
do_filesearch();
curs_set(0);
} else if (func == do_research) {
/* Search for another filename. */
do_fileresearch();
} else if (func == do_page_up) {
if (selected >= (editwinrows + fileline % editwinrows) * width)
selected -= (editwinrows + fileline % editwinrows) * width;
else
selected = 0;
} else if (func == do_page_down) {
selected += (editwinrows - fileline % editwinrows) * width;
if (selected > filelist_len - 1)
selected = filelist_len - 1;
} else if (func == do_first_file) {
selected = 0;
} else if (func == do_last_file) {
selected = filelist_len - 1;
} else if (func == goto_dir_void) {
/* Go to a specific directory. */
curs_set(1);
i = do_prompt(TRUE,
#ifndef DISABLE_TABCOMP
FALSE,
#endif
MGOTODIR, ans,
#ifndef DISABLE_HISTORIES
NULL,
#endif
/* TRANSLATORS: This is a prompt. */
browser_refresh, _("Go To Directory"));
curs_set(0);
bottombars(MBROWSER);
/* If the directory begins with a newline (i.e. an
* encoded null), treat it as though it's blank. */
if (i < 0 || *answer == '\n') {
/* We canceled. Indicate that on the statusbar, and
* blank out ans, since we're done with it. */
statusbar(_("Cancelled"));
ans = mallocstrcpy(ans, "");
continue;
} else if (i != 0) {
/* Put back the "Go to Directory" key and save
* answer in ans, so that the file list is displayed
* again, the prompt is displayed again, and what we
* typed before at the prompt is displayed again. */
unget_kbinput(sc_seq_or(do_gotolinecolumn_void, 0), FALSE, FALSE);
ans = mallocstrcpy(ans, answer);
continue;
}
/* We have a directory. Blank out ans, since we're done
* with it. */
ans = mallocstrcpy(ans, "");
/* Convert newlines to nulls, just before we go to the
* directory. */
sunder(answer);
align(&answer);
new_path = real_dir_from_tilde(answer);
if (new_path[0] != '/') {
new_path = charealloc(new_path, strlen(path) +
strlen(answer) + 1);
sprintf(new_path, "%s%s", path, answer);
}
#ifndef DISABLE_OPERATINGDIR
if (check_operating_dir(new_path, FALSE)) {
statusbar(_("Can't go outside of %s in restricted mode"),
operating_dir);
free(new_path);
continue;
}
#endif
dir = opendir(new_path);
if (dir == NULL) {
/* We can't open this directory for some reason.
* Complain. */
statusbar(_("Error reading %s: %s"), answer,
strerror(errno));
beep();
free(new_path);
continue;
}
/* Start over again with the new path value. */
free(path);
path = new_path;
goto change_browser_directory;
} else if (func == do_up_void) {
if (selected >= width)
selected -= width;
} else if (func == do_down_void) {
if (selected + width <= filelist_len - 1)
selected += width;
} else if (func == do_left) {
if (selected > 0)
selected--;
} else if (func == do_right) {
if (selected < filelist_len - 1)
selected++;
} else if (func == do_enter_void) {
/* We can't move up from "/". */
if (strcmp(filelist[selected], "/..") == 0) {
statusbar(_("Can't move up a directory"));
beep();
continue;
}
#ifndef DISABLE_OPERATINGDIR
/* Note: The selected file can be outside the operating
* directory if it's ".." or if it's a symlink to a
* directory outside the operating directory. */
if (check_operating_dir(filelist[selected], FALSE)) {
statusbar(_("Can't go outside of %s in restricted mode"),
operating_dir);
beep();
continue;
}
#endif
if (stat(filelist[selected], &st) == -1) {
/* We can't open this file for some reason.
* Complain. */
statusbar(_("Error reading %s: %s"),
filelist[selected], strerror(errno));
beep();
continue;
}
if (!S_ISDIR(st.st_mode)) {
/* We've successfully opened a file, we're done, so
* get out. */
retval = mallocstrcpy(NULL, filelist[selected]);
break;
} else if (strcmp(tail(filelist[selected]), "..") == 0)
/* We've successfully opened the parent directory,
* save the current directory in prev_dir, so that
* we can easily return to it by hitting Enter. */
prev_dir = mallocstrcpy(NULL, striponedir(filelist[selected]));
dir = opendir(filelist[selected]);
if (dir == NULL) {
/* We can't open this directory for some reason.
* Complain. */
statusbar(_("Error reading %s: %s"),
filelist[selected], strerror(errno));
beep();
continue;
}
path = mallocstrcpy(path, filelist[selected]);
/* Start over again with the new path value. */
goto change_browser_directory;
} else if (func == do_exit) {
/* Exit from the file browser. */
break;
}
}
titlebar(NULL);
edit_refresh();
curs_set(1);
if (old_const_update)
SET(CONST_UPDATE);
free(path);
free(ans);
free_chararray(filelist, filelist_len);
filelist = NULL;
filelist_len = 0;
return retval;
}
/* Our main file browser function. path is the tilde-expanded path we
* start browsing from. */
std::string do_browser(std::string path, DIR *dir)
{
std::string retval;
bool old_const_update = ISSET(CONST_UPDATE);
std::string prev_dir;
/* The directory we were in before backing up to "..". */
std::string ans;
/* The last answer the user typed at the statusbar prompt. */
size_t old_selected;
/* The selected file we had before the current selected file. */
curs_set(0);
blank_statusbar();
bottombars(MBROWSER);
wnoutrefresh(bottomwin);
UNSET(CONST_UPDATE);
change_browser_directory:
/* We go here after we select a new directory. */
path = get_full_path(path);
assert(path.length() > 0 && path.back() == '/');
/* Get the file list, and set longest and width in the process. */
browser_init(path, dir);
/* Sort the file list. */
std::sort(filelist.begin(), filelist.end(), sort_directories);
/* If prev_dir isn't empty, select the directory saved in it, and then blow it away. */
if (prev_dir != "") {
browser_select_filename(prev_dir);
prev_dir = "";
/* Otherwise, select the first file or directory in the list. */
} else {
selected = 0;
}
old_selected = (size_t)-1;
titlebar(path);
Key *kbinput = nullptr;
while (true) {
struct stat st;
size_t fileline = selected / width;
/* The line number the selected file is on. */
std::string new_path;
/* The path we switch to at the "Go to Directory" prompt. */
if (kbinput) {
delete kbinput;
kbinput = nullptr;
}
/* Display the file list if we don't have a key, or if the
* selected file has changed, and set width in the process. */
if (old_selected != selected) {
browser_refresh();
}
old_selected = selected;
// Deal with the keyboard input
kbinput = new Key(get_kbinput(edit));
auto func = func_from_key(*kbinput);
if (func == total_refresh) {
total_redraw();
} else if (func == do_help_void) {
do_help_void();
curs_set(0);
/* Search for a filename. */
} else if (func == do_search) {
curs_set(1);
do_filesearch();
curs_set(0);
/* Search for another filename. */
} else if (func == do_research) {
do_fileresearch();
} else if (func == do_page_up) {
if (selected >= (editwinrows + fileline % editwinrows) * width) {
selected -= (editwinrows + fileline % editwinrows) * width;
} else {
selected = 0;
}
} else if (func == do_page_down) {
selected += (editwinrows - fileline % editwinrows) * width;
if (selected > filelist.size() - 1) {
selected = filelist.size() - 1;
}
} else if (func == do_first_file) {
selected = 0;
} else if (func == do_last_file) {
selected = filelist.size() - 1;
} else if (func == goto_dir_void) {
/* Go to a specific directory. */
curs_set(1);
std::shared_ptr<Key> key;
PromptResult i = do_prompt(true,
false,
MGOTODIR, key, ans.c_str(),
NULL,
browser_refresh, _("Go To Directory"));
curs_set(0);
bottombars(MBROWSER);
/* If the directory begins with a newline (i.e. an
* encoded null), treat it as though it's blank. */
if (i == PROMPT_ABORTED || i == PROMPT_BLANK_STRING || answer.front() == '\n') {
/* We canceled. Indicate that on the statusbar, and
* blank out ans, since we're done with it. */
statusbar(_("Cancelled"));
ans = "";
func = nullptr;
continue;
} else if (i != PROMPT_ENTER_PRESSED) {
/* Put back the "Go to Directory" key and save
* answer in ans, so that the file list is displayed
* again, the prompt is displayed again, and what we
* typed before at the prompt is displayed again. */
ans = answer;
func = goto_dir_void;
continue;
}
/* We have a directory. Blank out ans, since we're done with it. */
ans = "";
/* Convert newlines to nulls, just before we go to the directory. */
sunder(answer);
new_path = real_dir_from_tilde(answer);
if (new_path == "") {
new_path = path + answer;
}
dir = opendir(new_path);
if (dir == NULL) {
/* We can't open this directory for some reason. Complain. */
statusbar(_("Error reading %s: %s"), answer.c_str(), strerror(errno));
beep();
func = nullptr;
continue;
}
/* Start over again with the new path value. */
path = new_path;
goto change_browser_directory;
} else if (func == do_up_void) {
if (selected >= width) {
selected -= width;
}
} else if (func == do_left) {
if (selected > 0) {
selected--;
}
} else if (func == do_down_void) {
if (selected + width <= filelist.size() - 1) {
selected += width;
}
} else if (func == do_right) {
if (selected < filelist.size() - 1) {
selected++;
}
} else if (func == do_enter_void) {
/* We can't move up from "/". */
if (filelist[selected] == "/..") {
statusbar(_("Can't move up a directory"));
beep();
func = nullptr;
continue;
}
if (stat(filelist[selected], &st) == -1) {
/* We can't open this file for some reason. Complain. */
statusbar(_("Error reading %s: %s"), filelist[selected].c_str(), strerror(errno));
beep();
func = nullptr;
continue;
}
if (!S_ISDIR(st.st_mode)) {
/* We've successfully opened a file, we're done, so get out. */
retval = filelist[selected];
func = nullptr;
break;
} else if (tail(filelist[selected]) == "..") {
/* We've successfully opened the parent directory,
* save the current directory in prev_dir, so that
* we can easily return to it by hitting Enter. */
prev_dir = striponedir(filelist[selected]);
}
dir = opendir(filelist[selected].c_str());
if (dir == NULL) {
/* We can't open this directory for some reason. Complain. */
statusbar(_("Error reading %s: %s"), filelist[selected].c_str(), strerror(errno));
beep();
func = nullptr;
continue;
}
path = filelist[selected];
/* Start over again with the new path value. */
goto change_browser_directory;
} else if (func == do_exit) {
/* Exit from the file browser. */
break;
}
func = nullptr;
}
if (kbinput) {
delete kbinput;
}
titlebar(NULL);
edit_refresh();
curs_set(1);
if (old_const_update) {
SET(CONST_UPDATE);
}
filelist.clear();
return retval;
}
