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"""
Fuzzy File Navigation

Copyright (c) 2012 Isaac Muse <isaacmuse@gmail.com>
"""

import sublime
import sublime_plugin
import os
import os.path as path
import re
import shutil
from multiconf import get as qualify_settings

PLATFORM = sublime.platform()
FUZZY_SETTINGS = "fuzzy_file_nav.sublime-settings"

if PLATFORM == "windows":
    import ctypes

PLATFORM = sublime.platform()
CMD_WIN = r"^(?:(?:(~)|(\.\.))(?:\\|/)|((?:[A-Za-z]{1}:)?(?:\\|/))|([\w\W]*(?:\\|/)))$"
CMD_NIX = r"^(?:(?:(~)|(\.\.))/|(/)|([\w\W]*/))$"
WIN_DRIVE = r"(^[A-Za-z]{1}:(?:\\|/))"


def debug_log(s):
    if sublime.load_settings(FUZZY_SETTINGS).get("debug", False):
        print "FuzzyFileNav: %s" % s


def status_cwd():
    if FuzzyFileNavCommand.status:
        sublime.run_command("fuzzy_get_cwd")
        sublime.set_timeout(status_cwd, 1000)


def get_root_path():
    # Windows doesn't have a root, so just
    # return an empty string to represent its root.
    return u"" if PLATFORM == "windows" else u"/"


def expanduser(path, default):
    return os.path.expanduser(path) if path != None else path


def back_dir(cwd):
    prev = path.dirname(cwd)

    # On windows, if you try and get the
    # dirname of a drive, you get the drive.
    # So if the previous directory is the same
    # as the current, back out of the drive and
    # list all drives.
    return get_root_path() if prev == cwd else prev


def get_drives():
    # Search through valid drive names and see if they exist.
    return [unicode(d + ":") for d in "ABCDEFGHIJKLMNOPQRSTUVWXYZ" if path.exists(d + ":")]


def back_to_root(cwd):
    root = ""
    if PLATFORM != "windows":
        # Linux/Unix: just return root
        root = "/"
    else:
        # Windows: try and find root drive from path
        # otherwise return "" to signal fuzzy nav to
        # list all drives.
        m = re.match(WIN_DRIVE, cwd)
        if m:
            root = m.group(1)
    return unicode(root)


class FuzzyPanelText(object):
    content = ""

    @classmethod
    def set_content(cls, txt):
        cls.content = txt

    @classmethod
    def get_content(cls):
        txt = cls.content
        return txt

    @classmethod
    def clear_content(cls):
        cls.content = ""


class FuzzyEventListener(sublime_plugin.EventListener):
    def on_activated(self, view):
        # New window gained activation? Reset fuzzy command state
        if FuzzyFileNavCommand.active and view.window() and view.window().id() != FuzzyFileNavCommand.win_id:
            FuzzyFileNavCommand.reset()
        # View has not been assinged yet for since fuzzy nav panel appeared; assign it
        if FuzzyFileNavCommand.active and (FuzzyFileNavCommand.view == None or FuzzyFileNavCommand.view.id() != view.id()):
            FuzzyFileNavCommand.view = view

    def on_query_context(self, view, key, operator, operand, match_all):
        active = FuzzyFileNavCommand.active == True
        if active and FuzzyFileNavCommand.view != None and FuzzyFileNavCommand.view.id() == view.id():
            FuzzyPanelText.set_content(view.substr(view.line(view.sel()[0])))
            full_name = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
            empty = (FuzzyPanelText.get_content() == "")
            # See if this is the auto-complete path command
            if key in ["fuzzy_path_complete", "fuzzy_path_complete_back", "fuzzy_toggle_hidden", "fuzzy_bookmarks_load", "fuzzy_get_cwd", "fuzzy_cwv"]:
                return active
            elif key in ["fuzzy_reveal", "fuzzy_search"]:
                if path.exists(FuzzyFileNavCommand.cwd):
                    return active
                else:
                    sublime.status_message("%s does not exist!" % FuzzyFileNavCommand.cwd)
            elif key == "fuzzy_delete":
                if not empty and path.exists(full_name):
                    return active
                elif not empty:
                    sublime.status_message("%s does not exist!" % full_name)
            elif key in ["fuzzy_make_file", "fuzzy_make_folder"]:
                if not empty and not path.exists(full_name):
                    return active
                elif not empty:
                    sublime.status_message("%s already exists!" % full_name)
            elif key == "fuzzy_save_as":
                if not empty and (not path.exists(full_name) or not path.isdir(full_name)):
                    return active
                elif not empty:
                    sublime.status_message("%s is a directory!" % full_name)
            elif key == "fuzzy_copy":
                if not empty and path.exists(full_name):
                    return active
                elif not empty:
                    sublime.status_message("%s does not exist!" % full_name)
            elif key == "fuzzy_cut":
                if path.exists(FuzzyFileNavCommand.cwd):
                    return active
                else:
                    sublime.status_message("%s does not exist!" % FuzzyFileNavCommand.cwd)
            elif key == "fuzzy_paste":
                if path.exists(FuzzyFileNavCommand.cwd) and len(FuzzyClipboardCommand.clips):
                    return active
                else:
                    sublime.status_message("%s does not exist!" % FuzzyFileNavCommand.cwd)
        return False

    def on_modified(self, view):
        if FuzzyFileNavCommand.active and FuzzyFileNavCommand.view != None and FuzzyFileNavCommand.view.id() == view.id():
            sel = view.sel()[0]
            win = view.window()
            line_text = view.substr(view.line(sel))
            FuzzyPathCompleteCommand.update_autocomplete(line_text)
            regex = CMD_WIN if PLATFORM == "windows" else CMD_NIX
            m = re.match(regex, line_text)
            if m:
                if m.group(1):
                    # Go Home
                    FuzzyFileNavCommand.fuzzy_reload = True
                    home = qualify_settings(sublime.load_settings(FUZZY_SETTINGS), "home", u"", expanduser)
                    home = get_root_path() if not path.exists(home) or not path.isdir(home) else home
                    win.run_command("fuzzy_file_nav", {"start": home})
                elif m.group(2):
                    # Back a directory
                    FuzzyFileNavCommand.fuzzy_reload = True
                    win.run_command("fuzzy_file_nav", {"start": back_dir(FuzzyFileNavCommand.cwd)})
                elif m.group(3):
                    # Go to root of drive/computer
                    if PLATFORM == "windows" and re.match(WIN_DRIVE, line_text):
                        if path.exists(line_text):
                            new_path = line_text.upper()
                    else:
                        new_path = back_to_root(FuzzyFileNavCommand.cwd)
                    FuzzyFileNavCommand.fuzzy_reload = True
                    win.run_command("fuzzy_file_nav", {"start": new_path})
                elif m.group(4):
                    # Load folder
                    new_path = path.join(FuzzyFileNavCommand.cwd, m.group(4))
                    if path.exists(new_path) and path.isdir(new_path):
                        FuzzyFileNavCommand.fuzzy_reload = True
                        win.run_command("fuzzy_file_nav", {"start": new_path})


class FuzzyCurrentWorkingViewCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        name = None
        win = sublime.active_window()
        if win is not None:
            cwv = win.active_view()
            if cwv is not None:
                file_name = cwv.file_name()
                if file_name is not None:
                    name = path.basename(file_name)
        if name is not None:
            view = FuzzyFileNavCommand.view
            edit = view.begin_edit()
            view.replace(edit, sublime.Region(0, view.size()), name)
            view.end_edit(edit)
            sels = view.sel()
            sels.clear()
            sels.add(sublime.Region(view.size()))


class FuzzyRevealCommand(sublime_plugin.WindowCommand):
    def run(self):
        file_name = FuzzyPanelText.get_content()
        FuzzyPanelText.clear_content()
        if path.exists(path.join(FuzzyFileNavCommand.cwd, file_name)):
            self.window.run_command("open_dir", {"dir": FuzzyFileNavCommand.cwd, "file": file_name})
        else:
            self.window.run_command("open_dir", {"dir": FuzzyFileNavCommand.cwd, "file": ""})


class FuzzySearchFolderCommand(sublime_plugin.WindowCommand):
    def run(self):
        file_name = FuzzyPanelText.get_content()
        FuzzyPanelText.clear_content()
        folder = path.join(FuzzyFileNavCommand.cwd, file_name)
        if path.exists(folder) and path.isdir(folder):
            self.window.run_command("show_panel", {"panel": "find_in_files", "where": folder})
        else:
            self.window.run_command("show_panel", {"panel": "find_in_files", "where": FuzzyFileNavCommand.cwd})


class FuzzyClipboardCommand(sublime_plugin.WindowCommand):
    clips = []
    action = None

    def run(self, action):
        self.cls = FuzzyClipboardCommand
        if action in ["cut", "copy"]:
            if len(self.cls.clips):
                self.cls.clear_entries()
            full_name = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
            FuzzyPanelText.clear_content()
            self.cls.add_entry(full_name)
            self.cls.set_action(action)
            FuzzyFileNavCommand.fuzzy_reload = True
            self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})
        elif action == "paste":
            self.paste()

    def paste(self):
        error = False
        self.to_path = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
        FuzzyPanelText.clear_content()
        move = (self.cls.action == "cut")
        self.from_path = self.cls.clips[0]
        self.cls.clear_entries()
        multi_file = (
            bool(sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_after_action", False)) and
            "paste" not in sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_exceptions", [])
        )

        if not multi_file:
            self.window.run_command("hide_overlay")
            FuzzyFileNavCommand.reset()
        else:
            FuzzyFileNavCommand.fuzzy_reload = True

        if path.exists(self.from_path):
            if path.isdir(self.from_path):
                self.action = shutil.copytree if not bool(move) else shutil.move
                error = self.dir_copy()
            else:
                self.action = shutil.copyfile if not bool(move) else shutil.move
                error = self.file_copy()
        if multi_file:
            if error:
                FuzzyFileNavCommand.reset()
            else:
                self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})

    def dir_copy(self):
        error = False
        try:
            if path.exists(self.to_path):
                if path.isdir(self.to_path):
                    self.action(self.from_path, path.join(self.to_path, path.basename(self.from_path)))
                else:
                    error = True
                    sublime.error_message("%s already exists!" % self.to_path)
            elif path.exists(path.dirname(self.to_path)):
                self.action(self.from_path, self.to_path)
            else:
                error = True
                sublime.error_message("Cannot copy %s" % self.from_path)
        except:
            error = True
            sublime.error_message("Cannot copy %s" % self.from_path)
        return error

    def file_copy(self):
        error = False
        try:
            if path.exists(self.to_path):
                if path.isdir(self.to_path):
                    file_name = path.join(self.to_path, path.basename(self.from_path))
                    if path.exists(file_name):
                        if not sublime.ok_cancel_dialog("%s exists!\n\nOverwrite file?" % file_name):
                            return
                    self.action(self.from_path, file_name)
                elif sublime.ok_cancel_dialog("%s exists!\n\nOverwrite file?" % self.to_path):
                    self.action(self.from_path, self.to_path)
            elif path.exists(path.dirname(self.to_path)):
                self.action(self.from_path, self.to_path)
            else:
                error = True
                sublime.error_message("Cannot copy %s" % self.from_path)
        except:
            error = True
            sublime.error_message("Cannot copy %s" % self.from_path)
        return error

    @classmethod
    def add_entry(cls, entry):
        if not entry in cls.clips:
            cls.clips.append(entry)

    @classmethod
    def set_action(cls, action):
        cls.action = action

    @classmethod
    def clear_entries(cls):
        cls.clips = []
        cls.action = None


class FuzzyDeleteCommand(sublime_plugin.WindowCommand):
    def run(self):
        error = False
        full_name = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
        FuzzyPanelText.clear_content()
        multi_file = (
            bool(sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_after_action", False)) and
            "delete" not in sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_exceptions", [])
        )

        if not multi_file:
            self.window.run_command("hide_overlay")
            FuzzyFileNavCommand.reset()
        else:
            FuzzyFileNavCommand.fuzzy_reload = True

        if sublime.ok_cancel_dialog("Delete %s?\n\nWarning: this is permanent!" % full_name):
            try:
                if path.isdir(full_name):
                    shutil.rmtree(full_name)
                else:
                    os.remove(full_name)
            except:
                error = True
                sublime.error_message("Error deleting %d!" % full_name)

        if multi_file:
            if error:
                FuzzyFileNavCommand.reset()
            else:
                self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})


class FuzzySaveFileCommand(sublime_plugin.WindowCommand):
    def save(self):
        if self.view.is_loading():
            sublime.set_timeout(self.save, 100)
        else:
            edit = self.view.begin_edit()
            self.view.replace(
                edit,
                sublime.Region(0, self.view.size()),
                self.bfr
            )
            self.view.end_edit(edit)
            sels = self.view.sel()
            sels.clear()
            map(lambda x: self.view.sel().add(x), self.current_sels)
            self.window.focus_view(self.view)
            self.view.set_viewport_position(self.position)
            self.view.run_command("save")
            if self.multi_file:
                self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})

    def run(self):
        full_name = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
        file_exists = path.exists(full_name)
        if file_exists:
            if not sublime.ok_cancel_dialog("%s exists!\n\nOverwrite file?" % full_name):
                return

        FuzzyPanelText.clear_content()
        self.multi_file = (
            bool(sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_after_action", False)) and
            "saveas" not in sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_exceptions", [])
        )
        active_view = self.window.active_view()
        if active_view is None:
            return
        self.bfr = active_view.substr(sublime.Region(0, active_view.size()))
        self.current_sels = [sublime.Region(s.begin(), s.end()) for s in active_view.sel()]
        self.position = active_view.viewport_position()
        if not self.multi_file:
            self.window.run_command("hide_overlay")
            FuzzyFileNavCommand.reset()
        else:
            FuzzyFileNavCommand.fuzzy_reload = True

        try:
            if not file_exists:
                with open(full_name, "a"):
                    pass
            active_view.set_scratch(True)
            self.window.run_command("close")
            self.view = self.window.open_file(full_name)
            sublime.set_timeout(self.save, 100)
        except:
            sublime.error_message("Could not create %s!" % full_name)
            if self.multi_file:
                FuzzyFileNavCommand.reset()


class FuzzyMakeFileCommand(sublime_plugin.WindowCommand):
    def run(self):
        error = False
        full_name = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
        FuzzyPanelText.clear_content()
        multi_file = (
            bool(sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_after_action", False)) and
            "mkfile" not in sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_exceptions", [])
        )
        if not multi_file:
            self.window.run_command("hide_overlay")
            FuzzyFileNavCommand.reset()
        else:
            FuzzyFileNavCommand.fuzzy_reload = True

        try:
            with open(full_name, "a"):
                pass
            self.window.open_file(full_name)
        except:
            error = True
            sublime.error_message("Could not create %s!" % full_name)

        if multi_file:
            if error:
                FuzzyFileNavCommand.reset()
            else:
                self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})


class FuzzyMakeFolderCommand(sublime_plugin.WindowCommand):
    def run(self):
        error = False
        full_name = path.join(FuzzyFileNavCommand.cwd, FuzzyPanelText.get_content())
        FuzzyPanelText.clear_content()
        multi_file = (
            bool(sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_after_action", False)) and
            "mkdir" not in sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_exceptions", [])
        )
        if not multi_file:
            self.window.run_command("hide_overlay")
            FuzzyFileNavCommand.reset()
        else:
            FuzzyFileNavCommand.fuzzy_reload = True

        try:
            os.makedirs(full_name)
        except:
            error = True
            sublime.error_message("Could not create %d!" % full_name)

        if multi_file:
            if error:
                FuzzyFileNavCommand.reset()
            else:
                self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})


class FuzzyBookmarksLoadCommand(sublime_plugin.WindowCommand):
    def run(self):
        if FuzzyFileNavCommand.active:
            self.window.run_command("hide_overlay")
        self.display = []
        # Search through bookmarks
        bookmarks = sublime.load_settings(FUZZY_SETTINGS).get("bookmarks", [])
        for bm in bookmarks:
            # Only show bookmarks that are for this host and/or platform
            target = qualify_settings(bm, "path", None, expanduser)
            # Make sure bookmards point to valid locations
            if target != None and ((path.exists(target) and path.isdir(target)) or (PLATFORM == "windows" and target == u"")):
                self.display.append([bm.get("name", target), target])
        if len(self.display) > 0:
            # Display bookmarks if valid ones were found
            self.window.run_command("hide_overlay")
            FuzzyFileNavCommand.reset()
            self.window.show_quick_panel(self.display, self.check_selection)

    def check_selection(self, value):
        if value > -1:
            # Load fuzzy nav with bookmarked shortcut
            self.window.run_command("fuzzy_file_nav", {"start": self.display[value][1]})


class FuzzyGetCwdCommand(sublime_plugin.ApplicationCommand):
    def run(self):
        if FuzzyFileNavCommand.active:
            sublime.status_message("CWD: " + FuzzyFileNavCommand.cwd)


class FuzzyToggleHiddenCommand(sublime_plugin.WindowCommand):
    def run(self, show=None):
        if FuzzyFileNavCommand.active:
            FuzzyFileNavCommand.fuzzy_reload = True
            if show == None:
                FuzzyFileNavCommand.hide_hidden = not FuzzyFileNavCommand.hide_hidden
            elif bool(show):
                FuzzyFileNavCommand.hide_hidden = True
            else:
                FuzzyFileNavCommand.hide_hidden = False
            self.window.run_command("fuzzy_file_nav", {"start": FuzzyFileNavCommand.cwd})


class FuzzyStartFromFileCommand(sublime_plugin.WindowCommand):
    def run(self, paths=[]):
        if FuzzyFileNavCommand.active:
            self.window.run_command("hide_overlay")
        name = self.get_target(paths)
        actions = set(["home", "bookmarks", "root"])
        # Check if you can retrieve a file name (means it exists on disk).
        if name is None:
            view = self.window.active_view()
            name = view.file_name() if view != None else None
        if name:
            # Buffer/view has a file name, so it exists on disk; naviagte its parent directory.
            self.window.run_command(
                "fuzzy_file_nav",
                {
                    "start": path.dirname(name) if not path.isdir(name) else name
                }
            )
        else:
            action = sublime.load_settings(FUZZY_SETTINGS).get("start_from_here_default_action", "bookmarks")
            if action in actions:
                # Load special action
                getattr(self, action)()
            else:
                # Invalid action; just load bookmarks
                self.window.run_command("fuzzy_bookmarks_load")

    def get_target(self, paths=[]):
        target = None
        if len(paths) and path.exists(paths[0]):
            target = paths[0]
        return target

    def home(self):
        home = qualify_settings(sublime.load_settings(FUZZY_SETTINGS), "home", u"", expanduser)
        home = get_root_path() if not path.exists(home) or not path.isdir(home) else home
        self.window.run_command("fuzzy_file_nav", {"start": home})

    def root(self):
        self.window.run_command("fuzzy_file_nav")

    def bookmarks(self):
        self.window.run_command("fuzzy_bookmarks_load")


class FuzzyPathCompleteCommand(sublime_plugin.WindowCommand):
    last = None
    in_progress = False
    text = None

    def run(self, back=False):
        def nix_common_chars(current_complete, l, case_insensitive):
            common = current_complete
            while True:
                match = True
                cmn_len = len(current_complete)
                if len(l[0]) > cmn_len:
                    common += l[0][cmn_len].lower() if case_insensitive else l[0][cmn_len]
                    cmn_len += 1
                else:
                    break
                for item in l:
                    value = item.lower() if case_insensitive else item
                    if not value.startswith(common):
                        match = False
                        break
                if not match:
                    break
                else:
                    current_complete = common
            selection = l[0][0:len(current_complete)]
            del l[:]
            l.append(selection)

        cls = FuzzyPathCompleteCommand
        view = FuzzyFileNavCommand.view
        complete = []
        settings = sublime.load_settings(FUZZY_SETTINGS)
        nix_path_complete = bool(settings.get("nix_style_path_complete", False))
        case_insensitive = PLATFORM == "windows" or not nix_path_complete
        if view != None:
            sel = view.sel()[0]
            if cls.text == None:
                cls.text = view.substr(view.line(sel))
            debug_log("completion text - " + cls.text)
            current = cls.text.lower() if case_insensitive else cls.text
            for item in FuzzyFileNavCommand.files:
                # Windows is case insensitive
                i = item.lower() if case_insensitive else item
                # See if current input matches the beginning of some of the entries
                if i.startswith(current):
                    if path.isdir(path.join(FuzzyFileNavCommand.cwd, item)):
                        item = item[0:len(item) - 1]
                    complete.append(item)

            complete_len = len(complete)

            if nix_path_complete and complete_len:
                nix_common_chars(current, complete, case_insensitive)
                complete_len = len(complete)

            # If only one entry matches, auto-complete it
            if (nix_path_complete and complete_len == 1) or (not nix_path_complete and complete_len):
                if nix_path_complete:
                    cls.last = 0
                else:
                    last = cls.last
                    if back:
                        cls.last = complete_len - 1 if last == None or last < 1 else last - 1
                    else:
                        cls.last = 0 if last == None or last >= complete_len - 1 else last + 1
                    cls.in_progress = True
                edit = view.begin_edit()
                view.replace(edit, sublime.Region(0, view.size()), complete[cls.last])
                view.end_edit(edit)
                sels = view.sel()
                sels.clear()
                sels.add(sublime.Region(view.size()))
            else:
                cls.last = None
                cls.text = None

    @classmethod
    def update_autocomplete(cls, text):
        if text != cls.text and cls.last != None:
            if not cls.in_progress:
                cls.text = None
                cls.last = None
            else:
                cls.in_progress = False

    @classmethod
    def reset_autocomplete(cls):
        cls.last = None
        cls.in_progress = False
        cls.text = None


class FuzzyFileNavCommand(sublime_plugin.WindowCommand):
    active = False
    win_id = None
    view = None
    fuzzy_reload = False
    hide_hidden = False
    cwd = ""
    status = False

    @classmethod
    def reset(cls):
        cls.active = False
        cls.win_id = None
        cls.view = None
        cls.status = False
        cls.hide_hidden = not bool(sublime.load_settings(FUZZY_SETTINGS).get("show_system_hidden_files", False))
        # FuzzyClipboardCommand.clear_entries()

    @classmethod
    def set_hidden(cls, value):
        cls.hide_hidden = value

    def run(self, start=None):
        if FuzzyFileNavCommand.active:
            self.window.run_command("hide_overlay")
        self.cls = FuzzyFileNavCommand
        previous = self.cls.cwd
        self.cls.active = True
        self.cls.win_id = self.window.id()
        self.regex_exclude = sublime.load_settings(FUZZY_SETTINGS).get("regex_exclude", [])
        FuzzyPathCompleteCommand.reset_autocomplete()

        debug_log("start - %s" % start if start is not None else "None")

        # Check if a start destination has been given
        # and ensure it is valid.
        directory = get_root_path() if start == None or not path.exists(start) or not path.isdir(start) else unicode(start)
        self.cls.cwd = directory if PLATFORM == "windows" and directory == u"" else path.normpath(directory)

        debug_log("cwd - %s" % self.cls.cwd)

        # Get and display options.
        try:
            self.display_files(self.cls.cwd)
        except:
            if self.cls.fuzzy_reload:
                # Reloading, so fuzzy panel must be up, so preserve previous state
                self.cls.fuzzy_reload = False
                self.cls.cwd = previous
            else:
                # Not reloading, so go ahead and reset the state
                self.cls.reset()
            sublime.status_message("%s is not accessible!" % self.cls.cwd)

    def get_files(self, cwd):
        # Get files/drives (windows).
        files = get_drives() if PLATFORM == "windows" and cwd == u"" else os.listdir(cwd)
        folders = []
        documents = []
        for f in files:
            valid = True
            full_path = path.join(cwd, f)

            # Check exclusion to omit files.
            if self.hide_hidden:
                if valid:
                    if not PLATFORM == "windows":
                        if f.startswith('.') and f != "..":
                            valid = False
                    else:
                        attrs = ctypes.windll.kernel32.GetFileAttributesW(unicode(full_path))
                        if attrs != -1 and bool(attrs & 2):
                            valid = False

                if valid:
                    for regex in self.regex_exclude:
                        if re.match(regex, f):
                            valid = False

            # Store file/folder info.
            if valid:
                if not path.isdir(full_path):
                    documents.append(f)
                else:
                    folders.append(f + ("\\" if PLATFORM == "windows" else "/"))
        return [u".."] + sorted(folders) + sorted(documents)

    def display_files(self, cwd):
        # Get the folders children
        self.cls.status = True
        status_cwd()
        self.cls.files = self.get_files(cwd)

        # Make sure panel is down before loading a new one.
        self.window.run_command("hide_overlay")
        self.cls.view = None
        self.window.show_quick_panel(self.cls.files, self.check_selection)

    def check_selection(self, selection):
        if selection > -1:
            self.cls.fuzzy_reload = False
            # The first selection is the "go up a directory" option.
            directory = back_dir(self.cls.cwd) if selection == 0 else path.join(self.cls.cwd, self.cls.files[selection])
            self.cls.cwd = directory if PLATFORM == "windows" and directory == u"" else path.normpath(directory)

            # Check if the option is a folder or if we are at the root (needed for windows)
            try:
                if (path.isdir(self.cls.cwd) or self.cls.cwd == get_root_path()):
                    # List directories content
                    self.display_files(self.cls.cwd)
                else:
                    # Open file
                    new_view = self.window.open_file(self.cls.cwd)
                    if new_view is not None:
                        self.window.focus_view(new_view)

                    # If multi-file open is set, leave panel open after opening file
                    if (
                        bool(sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_after_action", False)) and
                        "open" not in sublime.load_settings(FUZZY_SETTINGS).get("keep_panel_open_exceptions", [])
                    ):
                        self.cls.cwd = path.normpath(back_dir(self.cls.cwd))
                        self.display_files(self.cls.cwd)
                    else:
                        self.cls.reset()
            except:
                # Inaccessible folder try backing up
                sublime.status_message("%s is not accessible!" % self.cls.cwd)
                self.cls.cwd = back_dir(self.cls.cwd)
                self.window.run_command("hide_overlay")
                self.display_files(self.cls.cwd)
        elif not self.cls.fuzzy_reload:
            # Reset if not reloading
            self.cls.reset()
        else:
            # Reset reload flag if reloading
            self.cls.fuzzy_reload = False


def init_hidden():
    setting = sublime.load_settings(FUZZY_SETTINGS)
    show_hidden = not bool(setting.get("show_system_hidden_files", False))
    FuzzyFileNavCommand.set_hidden(show_hidden)
    setting.clear_on_change('reload')
    setting.add_on_change('reload', init_hidden)


init_hidden()
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