| #!/usr/bin/env python3 |
| |
| """ |
| Overview |
| ======== |
| |
| A curses-based menuconfig implementation. The interface should feel familiar to |
| people used to mconf ('make menuconfig'). |
| |
| Supports the same keys as mconf, and also supports a set of keybindings |
| inspired by Vi: |
| |
| J/K : Down/Up |
| L : Enter menu/Toggle item |
| H : Leave menu |
| Ctrl-D/U: Page Down/Page Down |
| G/End : Jump to end of list |
| g/Home : Jump to beginning of list |
| |
| The mconf feature where pressing a key jumps to a menu entry with that |
| character in it in the current menu isn't supported. A jump-to feature for |
| jumping directly to any symbol (including invisible symbols) is available |
| instead. |
| |
| Space and Enter are "smart" and try to do what you'd expect for the given |
| menu entry. |
| |
| |
| Running |
| ======= |
| |
| menuconfig.py can be run either as a standalone executable or by calling the |
| menu.menuconfig() function with an existing Kconfig instance. The second option |
| is a bit inflexible in that it will still load and save .config, etc. |
| |
| When run in standalone mode, the top-level Kconfig file to load can be passed |
| as a command-line argument. With no argument, it defaults to "Kconfig". |
| |
| The KCONFIG_CONFIG environment variable specifies the .config file to load (if |
| it exists) and save. If KCONFIG_CONFIG is unset, ".config" is used. |
| |
| $srctree is supported through Kconfiglib. |
| |
| |
| Other features |
| ============== |
| |
| - Seamless terminal resizing |
| |
| - No dependencies on *nix, as the 'curses' module is in the Python standard |
| library |
| |
| - Unicode text entry |
| |
| - Improved information screen compared to mconf: |
| |
| * Expressions are split up by their top-level &&/|| operands to improve |
| readability |
| |
| * Undefined symbols in expressions are pointed out |
| |
| * Menus and comments have information displays |
| |
| * Kconfig definitions are printed |
| |
| |
| Limitations |
| =========== |
| |
| - Python 3 only |
| |
| This is mostly due to Python 2 not having curses.get_wch(), which is needed |
| for Unicode support. |
| |
| - Doesn't work out of the box on Windows |
| |
| Has been tested to work with the wheels provided at |
| https://www.lfd.uci.edu/~gohlke/pythonlibs/#curses though. |
| """ |
| |
| import curses |
| import errno |
| import locale |
| import os |
| import platform |
| import re |
| import sys |
| import textwrap |
| |
| # We need this double import for the _expr_str() override below |
| import kconfiglib |
| |
| from kconfiglib import Kconfig, \ |
| Symbol, Choice, MENU, COMMENT, MenuNode, \ |
| BOOL, TRISTATE, STRING, INT, HEX, UNKNOWN, \ |
| AND, OR, NOT, \ |
| expr_value, split_expr, \ |
| TRI_TO_STR, TYPE_TO_STR |
| |
| |
| # |
| # Configuration variables |
| # |
| |
| # If True, try to convert LC_CTYPE to a UTF-8 locale if it is set to the C |
| # locale (which implies ASCII). This fixes curses Unicode I/O issues on systems |
| # with bad defaults. ncurses configures itself from the locale settings. |
| # |
| # Related PEP: https://www.python.org/dev/peps/pep-0538/ |
| _CONVERT_C_LC_CTYPE_TO_UTF8 = True |
| |
| # How many steps an implicit submenu will be indented. Implicit submenus are |
| # created when an item depends on the symbol before it. Note that symbols |
| # defined with 'menuconfig' create a separate menu instead of indenting. |
| _SUBMENU_INDENT = 4 |
| |
| # Number of steps for Page Up/Down to jump |
| _PG_JUMP = 6 |
| |
| # How far the cursor needs to be from the edge of the window before it starts |
| # to scroll |
| _SCROLL_OFFSET = 5 |
| |
| # Minimum width of dialogs that ask for text input |
| _INPUT_DIALOG_MIN_WIDTH = 30 |
| |
| # Number of arrows pointing up/down to draw when a window is scrolled |
| _N_SCROLL_ARROWS = 14 |
| |
| # Lines of help text shown at the bottom of the "main" display |
| _MAIN_HELP_LINES = """ |
| [Space/Enter] Toggle/enter [ESC] Leave menu [S] Save [O] Load |
| [?] Symbol info [/] Jump to symbol [A] Toggle show-all mode |
| [Q] Quit (prompts for save) [D] Save minimal config (advanced) |
| """[1:-1].split("\n") |
| |
| # Lines of help text shown at the bottom of the information dialog |
| _INFO_HELP_LINES = """ |
| [ESC/q] Return to menu |
| """[1:-1].split("\n") |
| |
| # Lines of help text shown at the bottom of the search dialog |
| _JUMP_TO_HELP_LINES = """ |
| Type text to narrow the search. Regexes are supported (via Python's 're' |
| module). The up/down cursor keys step in the list. [Enter] jumps to the |
| selected symbol. [ESC] aborts the search. Type multiple space-separated |
| strings/regexes to find entries that match all of them. |
| """[1:-1].split("\n") |
| |
| def _init_styles(): |
| global _SEPARATOR_STYLE |
| global _HELP_STYLE |
| global _LIST_STYLE |
| global _LIST_SEL_STYLE |
| global _LIST_INVISIBLE_STYLE |
| global _LIST_INVISIBLE_SEL_STYLE |
| global _INPUT_FIELD_STYLE |
| |
| global _PATH_STYLE |
| |
| global _DIALOG_FRAME_STYLE |
| global _DIALOG_BODY_STYLE |
| |
| global _INFO_TEXT_STYLE |
| |
| # Initialize styles for different parts of the application. The arguments |
| # are ordered as follows: |
| # |
| # 1. Text color |
| # 2. Background color |
| # 3. Attributes |
| # 4. Extra attributes if colors aren't available. The colors will be |
| # ignored in this case, and the attributes from (3.) and (4.) will be |
| # ORed together. |
| |
| # A_BOLD tends to produce faint and hard-to-read text on the Windows |
| # console, especially with the old color scheme, before the introduction of |
| # https://blogs.msdn.microsoft.com/commandline/2017/08/02/updating-the-windows-console-colors/ |
| BOLD = curses.A_NORMAL if _IS_WINDOWS else curses.A_BOLD |
| |
| |
| # Separator lines between windows. Also used for the top line in the symbol |
| # information dialog. |
| _SEPARATOR_STYLE = _style(curses.COLOR_BLACK, curses.COLOR_YELLOW, BOLD, curses.A_STANDOUT) |
| |
| # Edit boxes |
| _INPUT_FIELD_STYLE = _style(curses.COLOR_WHITE, curses.COLOR_BLUE, curses.A_NORMAL, curses.A_STANDOUT) |
| |
| # List of items, e.g. the main display |
| _LIST_STYLE = _style(curses.COLOR_BLACK, curses.COLOR_WHITE, curses.A_NORMAL ) |
| # Style for the selected item |
| _LIST_SEL_STYLE = _style(curses.COLOR_WHITE, curses.COLOR_BLUE, curses.A_NORMAL, curses.A_STANDOUT) |
| |
| # Like _LIST_(SEL_)STYLE, for invisible items. Used in show-all mode. |
| _LIST_INVISIBLE_STYLE = _style(curses.COLOR_RED, curses.COLOR_WHITE, curses.A_NORMAL, BOLD ) |
| _LIST_INVISIBLE_SEL_STYLE = _style(curses.COLOR_RED, curses.COLOR_BLUE, curses.A_NORMAL, curses.A_STANDOUT) |
| |
| # Help text windows at the bottom of various fullscreen dialogs |
| _HELP_STYLE = _style(curses.COLOR_BLACK, curses.COLOR_WHITE, BOLD ) |
| |
| # Top row in the main display, with the menu path |
| _PATH_STYLE = _style(curses.COLOR_BLACK, curses.COLOR_WHITE, BOLD ) |
| |
| # Symbol information text |
| _INFO_TEXT_STYLE = _LIST_STYLE |
| |
| # Frame around dialog boxes |
| _DIALOG_FRAME_STYLE = _style(curses.COLOR_BLACK, curses.COLOR_YELLOW, BOLD, curses.A_STANDOUT) |
| # Body of dialog boxes |
| _DIALOG_BODY_STYLE = _style(curses.COLOR_WHITE, curses.COLOR_BLACK, curses.A_NORMAL ) |
| |
| |
| # |
| # Main application |
| # |
| |
| # color_attribs holds the color pairs we've already created, indexed by a |
| # (<foreground color>, <background color>) tuple. |
| # |
| # Obscure Python: We never pass a value for color_attribs, and it keeps |
| # pointing to the same dict. This avoids a global. |
| def _style(fg_color, bg_color, attribs, no_color_extra_attribs=0, |
| color_attribs={}): |
| # Returns an attribute with the specified foreground and background color |
| # and the attributes in 'attribs'. Reuses color pairs already created if |
| # possible, and creates a new color pair otherwise. |
| # |
| # Returns 'attribs | no_color_extra_attribs' if colors aren't supported. |
| |
| if not curses.has_colors(): |
| return attribs | no_color_extra_attribs |
| |
| if (fg_color, bg_color) not in color_attribs: |
| # Create new color pair. Color pair number 0 is hardcoded and cannot be |
| # changed, hence the +1s. |
| curses.init_pair(len(color_attribs) + 1, fg_color, bg_color) |
| color_attribs[(fg_color, bg_color)] = \ |
| curses.color_pair(len(color_attribs) + 1) |
| |
| return color_attribs[(fg_color, bg_color)] | attribs |
| |
| # "Extend" the standard kconfiglib.expr_str() to show values for symbols |
| # appearing in expressions, for the information dialog. |
| # |
| # This is a bit hacky, but officially supported. It beats having to reimplement |
| # expression printing just to tweak it a bit. |
| |
| def _expr_str_val(expr): |
| if isinstance(expr, Symbol) and not expr.is_constant and \ |
| not _is_num(expr.name): |
| # Show the values of non-constant (non-quoted) symbols that don't look |
| # like numbers. Things like 123 are actually a symbol references, and |
| # only work as expected due to undefined symbols getting their name as |
| # their value. Showing the symbol value there isn't helpful though. |
| |
| if not expr.nodes: |
| # Undefined symbol reference |
| return "{}(undefined/n)".format(expr.name) |
| |
| return '{}(="{}")'.format(expr.name, expr.str_value) |
| |
| if isinstance(expr, tuple) and expr[0] == NOT and \ |
| isinstance(expr[1], Symbol): |
| |
| # Put a space after "!" before a symbol, since '! FOO(="y")' makes it |
| # clearer than '!FOO(="y")' that "y" is the value of FOO itself |
| return "! " + _expr_str(expr[1]) |
| |
| # We'll end up back in _expr_str_val() when _expr_str_orig() does recursive |
| # calls for subexpressions |
| return _expr_str_orig(expr) |
| |
| # Do hacky expr_str() extension. The rest of the code will just call |
| # _expr_str(). |
| _expr_str_orig = kconfiglib.expr_str |
| kconfiglib.expr_str = _expr_str_val |
| _expr_str = _expr_str_val |
| |
| def menuconfig(kconf): |
| """ |
| Launches the configuration interface, returning after the user exits. |
| |
| kconf: |
| Kconfig instance to be configured |
| """ |
| |
| globals()["_kconf"] = kconf |
| global _config_filename |
| global _show_all |
| |
| |
| _config_filename = os.environ.get("KCONFIG_CONFIG") |
| if _config_filename is None: |
| _config_filename = ".config" |
| |
| |
| if os.path.exists(_config_filename): |
| print("Using existing configuration '{}' as base" |
| .format(_config_filename)) |
| _kconf.load_config(_config_filename) |
| |
| elif kconf.defconfig_filename is not None: |
| print("Using default configuration found in '{}' as base" |
| .format(kconf.defconfig_filename)) |
| _kconf.load_config(kconf.defconfig_filename) |
| |
| else: |
| print("Using default symbol values as base") |
| |
| |
| # Any visible items in the top menu? |
| _show_all = False |
| if not _shown_nodes(_kconf.top_node): |
| # Nothing visible. Start in show-all mode and try again. |
| _show_all = True |
| if not _shown_nodes(_kconf.top_node): |
| # Give up. The implementation relies on always having a selected |
| # node. |
| print("Empty configuration -- nothing to configure.\n" |
| "Check that environment variables are set properly.") |
| return |
| |
| # Disable warnings. They get mangled in curses mode, and we deal with |
| # errors ourselves. |
| _kconf.disable_warnings() |
| |
| # Make curses use the locale settings specified in the environment |
| locale.setlocale(locale.LC_ALL, "") |
| |
| # Try to fix Unicode issues on systems with bad defaults |
| if _CONVERT_C_LC_CTYPE_TO_UTF8: |
| _convert_c_lc_ctype_to_utf8() |
| |
| # Get rid of the delay between pressing ESC and jumping to the parent menu |
| os.environ.setdefault("ESCDELAY", "0") |
| |
| # Enter curses mode. _menuconfig() returns a string to print on exit, after |
| # curses has been de-initialized. |
| print(curses.wrapper(_menuconfig)) |
| |
| # Global variables used below: |
| # |
| # _cur_menu: |
| # Menu node of the menu (or menuconfig symbol, or choice) currently being |
| # shown |
| # |
| # _shown: |
| # List of items in _cur_menu that are shown (ignoring scrolling). In |
| # show-all mode, this list contains all items in _cur_menu. Otherwise, it |
| # contains just the visible items. |
| # |
| # _sel_node_i: |
| # Index in _shown of the currently selected node |
| # |
| # _menu_scroll: |
| # Index in _shown of the top row of the main display |
| # |
| # _parent_screen_rows: |
| # List/stack of the row numbers that the selections in the parent menus |
| # appeared on. This is used to prevent the scrolling from jumping around |
| # when going in and out of menus. |
| # |
| # _show_all: |
| # If True, "show-all" mode is on. Show-all mode shows all symbols and other |
| # items in the current menu, including those that lack a prompt or aren't |
| # currently visible. |
| # |
| # Invisible items are drawn in a different style to make them stand out. |
| # |
| # _conf_changed: |
| # True if the configuration has been changed. If False, we don't bother |
| # showing the save-and-quit dialog. |
| # |
| # We reset this to False whenever the configuration is saved explicitly |
| # from the save dialog. |
| |
| def _menuconfig(stdscr): |
| # Logic for the main display, with the list of symbols, etc. |
| |
| globals()["stdscr"] = stdscr |
| global _conf_changed |
| |
| _init() |
| |
| while True: |
| _draw_main() |
| curses.doupdate() |
| |
| |
| c = _get_wch_compat(_menu_win) |
| |
| if c == curses.KEY_RESIZE: |
| _resize_main() |
| |
| if c in (curses.KEY_DOWN, "j", "J"): |
| _select_next_menu_entry() |
| |
| elif c in (curses.KEY_UP, "k", "K"): |
| _select_prev_menu_entry() |
| |
| elif c in (curses.KEY_NPAGE, "\x04"): # Page Down/Ctrl-D |
| # Keep it simple. This way we get sane behavior for small windows, |
| # etc., for free. |
| for _ in range(_PG_JUMP): |
| _select_next_menu_entry() |
| |
| elif c in (curses.KEY_PPAGE, "\x15"): # Page Up/Ctrl-U |
| for _ in range(_PG_JUMP): |
| _select_prev_menu_entry() |
| |
| elif c in (curses.KEY_END, "G"): |
| _select_last_menu_entry() |
| |
| elif c in (curses.KEY_HOME, "g"): |
| _select_first_menu_entry() |
| |
| elif c in (curses.KEY_RIGHT, " ", "\n", "l", "L"): |
| # Do appropriate node action. Only Space is treated specially, |
| # preferring to toggle nodes rather than enter menus. |
| |
| sel_node = _shown[_sel_node_i] |
| |
| if sel_node.is_menuconfig and not \ |
| (c == " " and _prefer_toggle(sel_node.item)): |
| |
| _enter_menu(sel_node) |
| |
| else: |
| _change_node(sel_node) |
| if _is_y_mode_choice_sym(sel_node.item): |
| # Immediately jump to the parent menu after making a choice |
| # selection, like 'make menuconfig' does |
| _leave_menu() |
| |
| elif c in ("n", "N"): |
| _set_node_tri_val(_shown[_sel_node_i], 0) |
| |
| elif c in ("m", "M"): |
| _set_node_tri_val(_shown[_sel_node_i], 1) |
| |
| elif c in ("y", "Y"): |
| _set_node_tri_val(_shown[_sel_node_i], 2) |
| |
| elif c in (curses.KEY_LEFT, curses.KEY_BACKSPACE, _ERASE_CHAR, |
| "\x1B", # \x1B = ESC |
| "h", "H"): |
| |
| if c == "\x1B" and _cur_menu is _kconf.top_node: |
| res = quit_dialog() |
| if res: |
| return res |
| else: |
| _leave_menu() |
| |
| elif c in ("o", "O"): |
| if _conf_changed: |
| c = _key_dialog( |
| "Load", |
| "You have unsaved changes. Load new\n" |
| "configuration anyway?\n" |
| "\n" |
| " (Y)es (C)ancel", |
| "yc") |
| |
| if c is None or c == "c": |
| continue |
| |
| if _load_dialog(): |
| _conf_changed = False |
| |
| elif c in ("s", "S"): |
| if _save_dialog(_kconf.write_config, _config_filename, |
| "configuration"): |
| |
| _conf_changed = False |
| |
| elif c in ("d", "D"): |
| _save_dialog(_kconf.write_min_config, "defconfig", |
| "minimal configuration") |
| |
| elif c == "/": |
| _jump_to_dialog() |
| # The terminal might have been resized while the fullscreen jump-to |
| # dialog was open |
| _resize_main() |
| |
| elif c == "?": |
| _info_dialog(_shown[_sel_node_i]) |
| # The terminal might have been resized while the fullscreen info |
| # dialog was open |
| _resize_main() |
| |
| elif c in ("a", "A"): |
| _toggle_show_all() |
| |
| elif c in ("q", "Q"): |
| res = quit_dialog() |
| if res: |
| return res |
| |
| def quit_dialog(): |
| if not _conf_changed: |
| return "No changes to save" |
| |
| while True: |
| c = _key_dialog( |
| "Quit", |
| " Save configuration?\n" |
| "\n" |
| "(Y)es (N)o (C)ancel", |
| "ync") |
| |
| if c is None or c == "c": |
| return None |
| |
| if c == "y": |
| if _try_save(_kconf.write_config, _config_filename, |
| "configuration"): |
| |
| return "Configuration saved to '{}'" \ |
| .format(_config_filename) |
| |
| elif c == "n": |
| return "Configuration was not saved" |
| |
| def _init(): |
| # Initializes the main display with the list of symbols, etc. Also does |
| # misc. global initialization that needs to happen after initializing |
| # curses. |
| |
| global _ERASE_CHAR |
| |
| global _path_win |
| global _top_sep_win |
| global _menu_win |
| global _bot_sep_win |
| global _help_win |
| |
| global _parent_screen_rows |
| global _cur_menu |
| global _shown |
| global _sel_node_i |
| global _menu_scroll |
| |
| global _conf_changed |
| |
| # Looking for this in addition to KEY_BACKSPACE (which is unreliable) makes |
| # backspace work with TERM=vt100. That makes it likely to work in sane |
| # environments. |
| # |
| # erasechar() returns a 'bytes' object. Since we use get_wch(), we need to |
| # decode it. Just give up and avoid crashing if it can't be decoded. |
| _ERASE_CHAR = curses.erasechar().decode("utf-8", "ignore") |
| |
| _init_styles() |
| |
| # Hide the cursor |
| _safe_curs_set(0) |
| |
| # Initialize windows |
| |
| # Top row, with menu path |
| _path_win = _styled_win(_PATH_STYLE) |
| |
| # Separator below menu path, with title and arrows pointing up |
| _top_sep_win = _styled_win(_SEPARATOR_STYLE) |
| |
| # List of menu entries with symbols, etc. |
| _menu_win = _styled_win(_LIST_STYLE) |
| _menu_win.keypad(True) |
| |
| # Row below menu list, with arrows pointing down |
| _bot_sep_win = _styled_win(_SEPARATOR_STYLE) |
| |
| # Help window with keys at the bottom |
| _help_win = _styled_win(_HELP_STYLE) |
| |
| # The rows we'd like the nodes in the parent menus to appear on. This |
| # prevents the scroll from jumping around when going in and out of menus. |
| _parent_screen_rows = [] |
| |
| # Initial state |
| _cur_menu = _kconf.top_node |
| _shown = _shown_nodes(_cur_menu) |
| _sel_node_i = 0 |
| _menu_scroll = 0 |
| |
| # Give windows their initial size |
| _resize_main() |
| |
| # No changes yet |
| _conf_changed = False |
| |
| def _resize_main(): |
| # Resizes the main display, with the list of symbols, etc., to fill the |
| # terminal |
| |
| global _menu_scroll |
| |
| screen_height, screen_width = stdscr.getmaxyx() |
| |
| _path_win.resize(1, screen_width) |
| _top_sep_win.resize(1, screen_width) |
| _bot_sep_win.resize(1, screen_width) |
| |
| help_win_height = len(_MAIN_HELP_LINES) |
| menu_win_height = screen_height - help_win_height - 3 |
| |
| if menu_win_height >= 1: |
| _menu_win.resize(menu_win_height, screen_width) |
| _help_win.resize(help_win_height, screen_width) |
| |
| _top_sep_win.mvwin(1, 0) |
| _menu_win.mvwin(2, 0) |
| _bot_sep_win.mvwin(2 + menu_win_height, 0) |
| _help_win.mvwin(2 + menu_win_height + 1, 0) |
| else: |
| # Degenerate case. Give up on nice rendering and just prevent errors. |
| |
| menu_win_height = 1 |
| |
| _menu_win.resize(1, screen_width) |
| _help_win.resize(1, screen_width) |
| |
| for win in _top_sep_win, _menu_win, _bot_sep_win, _help_win: |
| win.mvwin(0, 0) |
| |
| # Adjust the scroll so that the selected node is still within the window, |
| # if needed |
| if _sel_node_i - _menu_scroll >= menu_win_height: |
| _menu_scroll = _sel_node_i - menu_win_height + 1 |
| |
| def _menu_win_height(): |
| # Returns the height of the menu display |
| |
| return _menu_win.getmaxyx()[0] |
| |
| def _prefer_toggle(item): |
| # For nodes with menus, determines whether Space should change the value of |
| # the node's item or enter its menu. We toggle symbols (which have menus |
| # when they're defined with 'menuconfig') and choices that can be in more |
| # than one mode (e.g. optional choices). In other cases, we enter the menu. |
| |
| return isinstance(item, Symbol) or \ |
| (isinstance(item, Choice) and len(item.assignable) > 1) |
| |
| def _enter_menu(menu): |
| # Makes 'menu' the currently displayed menu |
| |
| global _cur_menu |
| global _shown |
| global _sel_node_i |
| global _menu_scroll |
| |
| shown_sub = _shown_nodes(menu) |
| # Never enter empty menus. We depend on having a current node. |
| if shown_sub: |
| # Remember where the current node appears on the screen, so we can try |
| # to get it to appear in the same place when we leave the menu |
| _parent_screen_rows.append(_sel_node_i - _menu_scroll) |
| |
| # Jump into menu |
| _cur_menu = menu |
| _shown = shown_sub |
| _sel_node_i = 0 |
| _menu_scroll = 0 |
| |
| def _jump_to(node): |
| # Jumps directly to the menu node 'node' |
| |
| global _cur_menu |
| global _shown |
| global _sel_node_i |
| global _menu_scroll |
| global _show_all |
| global _parent_screen_rows |
| |
| # Clear remembered menu locations. We might not even have been in the |
| # parent menus before. |
| _parent_screen_rows = [] |
| |
| # Turn on show-all mode if the node isn't visible |
| if not (node.prompt and expr_value(node.prompt[1])): |
| _show_all = True |
| |
| _cur_menu = _parent_menu(node) |
| _shown = _shown_nodes(_cur_menu) |
| _sel_node_i = _shown.index(node) |
| |
| # Center the jumped-to node vertically, if possible |
| _menu_scroll = max(_sel_node_i - _menu_win_height()//2, 0) |
| |
| def _leave_menu(): |
| # Jumps to the parent menu of the current menu. Does nothing if we're in |
| # the top menu. |
| |
| global _cur_menu |
| global _shown |
| global _sel_node_i |
| global _menu_scroll |
| |
| if _cur_menu is _kconf.top_node: |
| return |
| |
| # Jump to parent menu |
| parent = _parent_menu(_cur_menu) |
| _shown = _shown_nodes(parent) |
| _sel_node_i = _shown.index(_cur_menu) |
| _cur_menu = parent |
| |
| # Try to make the menu entry appear on the same row on the screen as it did |
| # before we entered the menu. |
| |
| if _parent_screen_rows: |
| # The terminal might have shrunk since we were last in the parent menu |
| screen_row = min(_parent_screen_rows.pop(), _menu_win_height() - 1) |
| _menu_scroll = max(_sel_node_i - screen_row, 0) |
| else: |
| # No saved parent menu locations, meaning we jumped directly to some |
| # node earlier. Just center the node vertically if possible. |
| _menu_scroll = max(_sel_node_i - _menu_win_height()//2, 0) |
| |
| def _select_next_menu_entry(): |
| # Selects the menu entry after the current one, adjusting the scroll if |
| # necessary. Does nothing if we're already at the last menu entry. |
| |
| global _sel_node_i |
| global _menu_scroll |
| |
| if _sel_node_i < len(_shown) - 1: |
| # Jump to the next node |
| _sel_node_i += 1 |
| |
| # If the new node is sufficiently close to the edge of the menu window |
| # (as determined by _SCROLL_OFFSET), increase the scroll by one. This |
| # gives nice and non-jumpy behavior even when |
| # _SCROLL_OFFSET >= _menu_win_height(). |
| if _sel_node_i >= _menu_scroll + _menu_win_height() - _SCROLL_OFFSET: |
| _menu_scroll = min(_menu_scroll + 1, |
| _max_scroll(_shown, _menu_win)) |
| |
| def _select_prev_menu_entry(): |
| # Selects the menu entry before the current one, adjusting the scroll if |
| # necessary. Does nothing if we're already at the first menu entry. |
| |
| global _sel_node_i |
| global _menu_scroll |
| |
| if _sel_node_i > 0: |
| # Jump to the previous node |
| _sel_node_i -= 1 |
| |
| # See _select_next_menu_entry() |
| if _sel_node_i <= _menu_scroll + _SCROLL_OFFSET: |
| _menu_scroll = max(_menu_scroll - 1, 0) |
| |
| def _select_last_menu_entry(): |
| # Selects the last menu entry in the current menu |
| |
| global _sel_node_i |
| global _menu_scroll |
| |
| _sel_node_i = len(_shown) - 1 |
| _menu_scroll = _max_scroll(_shown, _menu_win) |
| |
| def _select_first_menu_entry(): |
| # Selects the first menu entry in the current menu |
| |
| global _sel_node_i |
| global _menu_scroll |
| |
| _sel_node_i = _menu_scroll = 0 |
| |
| def _toggle_show_all(): |
| # Toggles show-all mode on/off |
| |
| global _show_all |
| global _shown |
| global _sel_node_i |
| global _menu_scroll |
| |
| # Row on the screen the cursor is on. Preferably we want the same row to |
| # stay highlighted. |
| old_row = _sel_node_i - _menu_scroll |
| |
| _show_all = not _show_all |
| # List of new nodes to be shown after toggling _show_all |
| new_shown = _shown_nodes(_cur_menu) |
| |
| # Find a good node to select. The selected node might disappear if show-all |
| # mode is turned off. |
| |
| # If there are visible nodes before the previously selected node, select |
| # the closest one. This will select the previously selected node itself if |
| # it is still visible. |
| for node in reversed(_shown[:_sel_node_i + 1]): |
| if node in new_shown: |
| _sel_node_i = new_shown.index(node) |
| break |
| else: |
| # No visible nodes before the previously selected node. Select the |
| # closest visible node after it instead. |
| for node in _shown[_sel_node_i + 1:]: |
| if node in new_shown: |
| _sel_node_i = new_shown.index(node) |
| break |
| else: |
| # No visible nodes at all, meaning show-all was turned off inside |
| # an invisible menu. Don't allow that, as the implementation relies |
| # on always having a selected node. |
| _show_all = True |
| |
| return |
| |
| _shown = new_shown |
| |
| # Try to make the cursor stay on the same row in the menu window. This |
| # might be impossible if too many nodes have disappeared above the node. |
| _menu_scroll = max(_sel_node_i - old_row, 0) |
| |
| def _draw_main(): |
| # Draws the "main" display, with the list of symbols, the header, and the |
| # footer. |
| # |
| # This could be optimized to only update the windows that have actually |
| # changed, but keep it simple for now and let curses sort it out. |
| |
| term_width = stdscr.getmaxyx()[1] |
| |
| |
| # |
| # Update the top row with the menu path |
| # |
| |
| _path_win.erase() |
| |
| # Draw the menu path ("(top menu) -> menu -> submenu -> ...") |
| |
| menu_prompts = [] |
| |
| menu = _cur_menu |
| while menu is not _kconf.top_node: |
| menu_prompts.append(menu.prompt[0]) |
| menu = _parent_menu(menu) |
| menu_prompts.append("(top menu)") |
| menu_prompts.reverse() |
| |
| # Hack: We can't put ACS_RARROW directly in the string. Temporarily |
| # represent it with NULL. Maybe using a Unicode character would be better. |
| menu_path_str = " \0 ".join(menu_prompts) |
| |
| # Scroll the menu path to the right if needed to make the current menu's |
| # title visible |
| if len(menu_path_str) > term_width: |
| menu_path_str = menu_path_str[len(menu_path_str) - term_width:] |
| |
| # Print the path with the arrows reinserted |
| split_path = menu_path_str.split("\0") |
| _safe_addstr(_path_win, split_path[0]) |
| for s in split_path[1:]: |
| _safe_addch(_path_win, curses.ACS_RARROW) |
| _safe_addstr(_path_win, s) |
| |
| _path_win.noutrefresh() |
| |
| |
| # |
| # Update the separator row below the menu path |
| # |
| |
| _top_sep_win.erase() |
| |
| # Draw arrows pointing up if the symbol window is scrolled down. Draw them |
| # before drawing the title, so the title ends up on top for small windows. |
| if _menu_scroll > 0: |
| _safe_hline(_top_sep_win, 0, 4, curses.ACS_UARROW, _N_SCROLL_ARROWS) |
| |
| # Add the 'mainmenu' text as the title, centered at the top |
| _safe_addstr(_top_sep_win, |
| 0, (term_width - len(_kconf.mainmenu_text))//2, |
| _kconf.mainmenu_text) |
| |
| _top_sep_win.noutrefresh() |
| |
| |
| # |
| # Update the symbol window |
| # |
| |
| _menu_win.erase() |
| |
| # Draw the _shown nodes starting from index _menu_scroll up to either as |
| # many as fit in the window, or to the end of _shown |
| for i in range(_menu_scroll, |
| min(_menu_scroll + _menu_win_height(), len(_shown))): |
| |
| node = _shown[i] |
| |
| if node.prompt and expr_value(node.prompt[1]): |
| style = _LIST_SEL_STYLE if i == _sel_node_i else _LIST_STYLE |
| else: |
| style = _LIST_INVISIBLE_SEL_STYLE if i == _sel_node_i else \ |
| _LIST_INVISIBLE_STYLE |
| |
| _safe_addstr(_menu_win, i - _menu_scroll, 0, _node_str(node), style) |
| |
| _menu_win.noutrefresh() |
| |
| |
| # |
| # Update the bottom separator window |
| # |
| |
| _bot_sep_win.erase() |
| |
| # Draw arrows pointing down if the symbol window is scrolled up |
| if _menu_scroll < _max_scroll(_shown, _menu_win): |
| _safe_hline(_bot_sep_win, 0, 4, curses.ACS_DARROW, _N_SCROLL_ARROWS) |
| |
| # Indicate when show-all mode is enabled |
| if _show_all: |
| s = "Show-all mode enabled" |
| _safe_addstr(_bot_sep_win, 0, term_width - len(s) - 2, s) |
| |
| _bot_sep_win.noutrefresh() |
| |
| |
| # |
| # Update the help window |
| # |
| |
| _help_win.erase() |
| |
| for i, line in enumerate(_MAIN_HELP_LINES): |
| _safe_addstr(_help_win, i, 0, line) |
| |
| _help_win.noutrefresh() |
| |
| def _parent_menu(node): |
| # Returns the menu node of the menu that contains 'node'. In addition to |
| # proper 'menu's, this might also be a 'menuconfig' symbol or a 'choice'. |
| # "Menu" here means a menu in the interface. |
| |
| menu = node.parent |
| while not menu.is_menuconfig: |
| menu = menu.parent |
| return menu |
| |
| def _shown_nodes(menu): |
| # Returns a list of the nodes in 'menu' (see _parent_menu()) that should be |
| # shown in the menu window |
| |
| res = [] |
| |
| def rec(node): |
| nonlocal res |
| |
| while node: |
| # Show the node if its prompt is visible. For menus, also check |
| # 'visible if'. In show-all mode, show everything. |
| if _show_all or \ |
| (node.prompt and expr_value(node.prompt[1]) and not \ |
| (node.item == MENU and not expr_value(node.visibility))): |
| |
| res.append(node) |
| |
| # If a node has children but doesn't have the is_menuconfig |
| # flag set, the children come from a submenu created implicitly |
| # from dependencies. Show those in this menu too. |
| if node.list and not node.is_menuconfig: |
| rec(node.list) |
| |
| node = node.next |
| |
| rec(menu.list) |
| return res |
| |
| def _change_node(node): |
| # Changes the value of the menu node 'node' if it is a symbol. Bools and |
| # tristates are toggled, while other symbol types pop up a text entry |
| # dialog. |
| |
| if not isinstance(node.item, (Symbol, Choice)): |
| return |
| |
| # This will hit for invisible symbols in show-all mode |
| if not (node.prompt and expr_value(node.prompt[1])): |
| return |
| |
| # sc = symbol/choice |
| sc = node.item |
| |
| if sc.type in (INT, HEX, STRING): |
| s = sc.str_value |
| |
| while True: |
| s = _input_dialog("Value for '{}' ({})".format( |
| node.prompt[0], TYPE_TO_STR[sc.type]), |
| s, _range_info(sc)) |
| |
| if s is None: |
| break |
| |
| if sc.type in (INT, HEX): |
| s = s.strip() |
| |
| # 'make menuconfig' does this too. Hex values not starting with |
| # '0x' are accepted when loading .config files though. |
| if sc.type == HEX and not s.startswith(("0x", "0X")): |
| s = "0x" + s |
| |
| if _check_validity(sc, s): |
| _set_val(sc, s) |
| break |
| |
| elif len(sc.assignable) == 1: |
| # Handles choice symbols for choices in y mode, which are a special |
| # case: .assignable can be (2,) while .tri_value is 0. |
| _set_val(sc, sc.assignable[0]) |
| |
| else: |
| # Set the symbol to the value after the current value in |
| # sc.assignable, with wrapping |
| val_index = sc.assignable.index(sc.tri_value) |
| _set_val(sc, sc.assignable[(val_index + 1) % len(sc.assignable)]) |
| |
| _update_menu() |
| |
| def _set_node_tri_val(node, tri_val): |
| # Sets 'node' to 'tri_val', if that value can be assigned |
| |
| if isinstance(node.item, (Symbol, Choice)) and \ |
| tri_val in node.item.assignable: |
| |
| _set_val(node.item, tri_val) |
| |
| def _set_val(sc, val): |
| # Wrapper around Symbol/Choice.set_value() for updating the menu state and |
| # _conf_changed |
| |
| global _conf_changed |
| |
| # Use the string representation of tristate values. This makes the format |
| # consistent for all symbol types. |
| if val in TRI_TO_STR: |
| val = TRI_TO_STR[val] |
| |
| if val != sc.str_value: |
| sc.set_value(val) |
| _conf_changed = True |
| |
| # Changing the value of the symbol might have changed what items in the |
| # current menu are visible. Recalculate the state. |
| _update_menu() |
| |
| def _update_menu(): |
| # Updates the current menu after the value of a symbol or choice has been |
| # changed. Changing a value might change which items in the menu are |
| # visible. |
| # |
| # Tries to preserve the location of the cursor when items disappear above |
| # it. |
| |
| global _shown |
| global _sel_node_i |
| global _menu_scroll |
| |
| # Row on the screen the cursor was on |
| old_row = _sel_node_i - _menu_scroll |
| |
| sel_node = _shown[_sel_node_i] |
| |
| # New visible nodes |
| _shown = _shown_nodes(_cur_menu) |
| |
| # New index of selected node |
| _sel_node_i = _shown.index(sel_node) |
| |
| # Try to make the cursor stay on the same row in the menu window. This |
| # might be impossible if too many nodes have disappeared above the node. |
| _menu_scroll = max(_sel_node_i - old_row, 0) |
| |
| def _input_dialog(title, initial_text, info_text=None): |
| # Pops up a dialog that prompts the user for a string |
| # |
| # title: |
| # Title to display at the top of the dialog window's border |
| # |
| # initial_text: |
| # Initial text to prefill the input field with |
| # |
| # info_text: |
| # String to show next to the input field. If None, just the input field |
| # is shown. |
| |
| win = _styled_win(_DIALOG_BODY_STYLE) |
| win.keypad(True) |
| |
| # Give the input dialog its initial size |
| _resize_input_dialog(win, title, info_text) |
| |
| _safe_curs_set(2) |
| |
| # Input field text |
| s = initial_text |
| |
| # Cursor position |
| i = len(initial_text) |
| |
| def edit_width(): |
| return win.getmaxyx()[1] - 4 |
| |
| # Horizontal scroll offset |
| hscroll = max(i - edit_width() + 1, 0) |
| |
| while True: |
| # Draw the "main" display with the menu, etc., so that resizing still |
| # works properly. This is like a stack of windows, only hardcoded for |
| # now. |
| _draw_main() |
| _draw_input_dialog(win, title, info_text, s, i, hscroll) |
| curses.doupdate() |
| |
| |
| c = _get_wch_compat(win) |
| |
| if c == "\n": |
| _safe_curs_set(0) |
| return s |
| |
| if c == "\x1B": # \x1B = ESC |
| _safe_curs_set(0) |
| return None |
| |
| |
| if c == curses.KEY_RESIZE: |
| # Resize the main display too. The dialog floats above it. |
| _resize_main() |
| _resize_input_dialog(win, title, info_text) |
| |
| else: |
| s, i, hscroll = _edit_text(c, s, i, hscroll, edit_width()) |
| |
| def _resize_input_dialog(win, title, info_text): |
| # Resizes the input dialog to a size appropriate for the terminal size |
| |
| screen_height, screen_width = stdscr.getmaxyx() |
| |
| win_height = min(5 if info_text is None else 7, screen_height) |
| |
| win_width = max(_INPUT_DIALOG_MIN_WIDTH, len(title) + 4) |
| if info_text is not None: |
| win_width = max(win_width, len(info_text) + 4) |
| win_width = min(win_width, screen_width) |
| |
| win.resize(win_height, win_width) |
| win.mvwin((screen_height - win_height)//2, |
| (screen_width - win_width)//2) |
| |
| def _draw_input_dialog(win, title, info_text, s, i, hscroll): |
| edit_width = win.getmaxyx()[1] - 4 |
| |
| win.erase() |
| |
| _draw_frame(win, title) |
| |
| # Note: Perhaps having a separate window for the input field would be nicer |
| visible_s = s[hscroll:hscroll + edit_width] |
| _safe_addstr(win, 2, 2, visible_s + " "*(edit_width - len(visible_s)), |
| _INPUT_FIELD_STYLE) |
| |
| if info_text is not None: |
| _safe_addstr(win, 4, 2, info_text) |
| |
| _safe_move(win, 2, 2 + i - hscroll) |
| |
| win.noutrefresh() |
| |
| def _load_dialog(): |
| # Dialog for loading a new configuration |
| # |
| # Return value: |
| # True if a new configuration was loaded, and False if the user canceled |
| # the dialog |
| |
| global _show_all |
| |
| filename = "" |
| while True: |
| filename = _input_dialog("File to load", filename) |
| |
| if filename is None: |
| return False |
| |
| if _try_load(filename): |
| sel_node = _shown[_sel_node_i] |
| |
| # Turn on show-all mode if the current node is (no longer) visible |
| if not (sel_node.prompt and expr_value(sel_node.prompt[1])): |
| _show_all = True |
| |
| _update_menu() |
| |
| # The message dialog indirectly updates the menu display, so _msg() |
| # must be called after the new state has been initialized |
| _msg("Success", "Loaded {}".format(filename)) |
| return True |
| |
| def _try_load(filename): |
| # Tries to load a configuration file. Pops up an error and returns False on |
| # failure. |
| # |
| # filename: |
| # Configuration file to load |
| |
| # Hack: strerror and errno are lost after we raise the custom IOError with |
| # troubleshooting help in Kconfig.load_config(). Adding them back to the |
| # exception loses the custom message. As a workaround, try opening the file |
| # separately first and report any errors. |
| try: |
| open(filename).close() |
| except OSError as e: |
| _error("Error loading {}\n\n{} (errno: {})" |
| .format(filename, e.strerror, errno.errorcode[e.errno])) |
| return False |
| |
| try: |
| _kconf.load_config(filename) |
| return True |
| except OSError as e: |
| _error("Error loading {}\n\nUnknown error".format(filename)) |
| return False |
| |
| def _save_dialog(save_fn, default_filename, description): |
| # Dialog for saving the current configuration |
| # |
| # save_fn: |
| # Function to call with 'filename' to save the file |
| # |
| # default_filename: |
| # Prefilled filename in the input field |
| # |
| # description: |
| # String describing the thing being saved |
| # |
| # Return value: |
| # True if the configuration was saved, and False if the user canceled the |
| # dialog |
| |
| filename = default_filename |
| while True: |
| filename = _input_dialog( |
| "Filename to save {} to".format(description), |
| filename) |
| |
| if filename is None: |
| return False |
| |
| if _try_save(save_fn, filename, description): |
| _msg("Success", "{} saved to {}".format(description, filename)) |
| return True |
| |
| def _try_save(save_fn, filename, description): |
| # Tries to save a configuration file. Pops up an error and returns False on |
| # failure. |
| # |
| # save_fn: |
| # Function to call with 'filename' to save the file |
| # |
| # description: |
| # String describing the thing being saved |
| |
| try: |
| save_fn(filename) |
| return True |
| except OSError as e: |
| _error("Error saving {} to '{}'\n\n{} (errno: {})" |
| .format(description, e.filename, e.strerror, |
| errno.errorcode[e.errno])) |
| return False |
| |
| def _key_dialog(title, text, keys): |
| # Pops up a dialog that can be closed by pressing a key |
| # |
| # title: |
| # Title to display at the top of the dialog window's border |
| # |
| # text: |
| # Text to show in the dialog |
| # |
| # keys: |
| # List of keys that will close the dialog. Other keys (besides ESC) are |
| # ignored. The caller is responsible for providing a hint about which |
| # keys can be pressed in 'text'. |
| # |
| # Return value: |
| # The key that was pressed to close the dialog. Uppercase characters are |
| # converted to lowercase. ESC will always close the dialog, and returns |
| # None. |
| |
| win = _styled_win(_DIALOG_BODY_STYLE) |
| win.keypad(True) |
| |
| _resize_key_dialog(win, text) |
| |
| while True: |
| # See _input_dialog() |
| _draw_main() |
| _draw_key_dialog(win, title, text) |
| curses.doupdate() |
| |
| |
| c = _get_wch_compat(win) |
| |
| if c == "\x1B": # \x1B = ESC |
| return None |
| |
| |
| if c == curses.KEY_RESIZE: |
| # Resize the main display too. The dialog floats above it. |
| _resize_main() |
| _resize_key_dialog(win, text) |
| |
| elif isinstance(c, str): |
| c = c.lower() |
| if c in keys: |
| return c |
| |
| def _resize_key_dialog(win, text): |
| # Resizes the key dialog to a size appropriate for the terminal size |
| |
| screen_height, screen_width = stdscr.getmaxyx() |
| |
| lines = text.split("\n") |
| |
| win_height = min(len(lines) + 4, screen_height) |
| win_width = min(max(len(line) for line in lines) + 4, screen_width) |
| |
| win.resize(win_height, win_width) |
| win.mvwin((screen_height - win_height)//2, |
| (screen_width - win_width)//2) |
| |
| def _draw_key_dialog(win, title, text): |
| win.erase() |
| _draw_frame(win, title) |
| |
| for i, line in enumerate(text.split("\n")): |
| _safe_addstr(win, 2 + i, 2, line) |
| |
| win.noutrefresh() |
| |
| def _draw_frame(win, title): |
| # Draw a frame around the inner edges of 'win', with 'title' at the top |
| |
| win_height, win_width = win.getmaxyx() |
| |
| win.attron(_DIALOG_FRAME_STYLE) |
| |
| # Draw top/bottom edge |
| _safe_hline(win, 0, 0, " ", win_width) |
| _safe_hline(win, win_height - 1, 0, " ", win_width) |
| |
| # Draw left/right edge |
| _safe_vline(win, 0, 0, " ", win_height) |
| _safe_vline(win, 0, win_width - 1, " ", win_height) |
| |
| # Draw title |
| _safe_addstr(win, 0, (win_width - len(title))//2, title) |
| |
| win.attroff(_DIALOG_FRAME_STYLE) |
| |
| def _jump_to_dialog(): |
| # Search text |
| s = "" |
| # Previous search text |
| prev_s = None |
| # Search text cursor position |
| s_i = 0 |
| # Horizontal scroll offset |
| hscroll = 0 |
| |
| # Index of selected row |
| sel_node_i = 0 |
| # Index in 'matches' of the top row of the list |
| scroll = 0 |
| |
| # Edit box at the top |
| edit_box = _styled_win(_INPUT_FIELD_STYLE) |
| edit_box.keypad(True) |
| |
| # List of matches |
| matches_win = _styled_win(_LIST_STYLE) |
| |
| # Bottom separator, with arrows pointing down |
| bot_sep_win = _styled_win(_SEPARATOR_STYLE) |
| |
| # Help window with instructions at the bottom |
| help_win = _styled_win(_HELP_STYLE) |
| |
| # Give windows their initial size |
| _resize_jump_to_dialog(edit_box, matches_win, bot_sep_win, help_win, |
| sel_node_i, scroll) |
| |
| _safe_curs_set(2) |
| |
| # TODO: Code duplication with _select_{next,prev}_menu_entry(). Can this be |
| # factored out in some nice way? |
| |
| def select_next_match(): |
| nonlocal sel_node_i |
| nonlocal scroll |
| |
| if sel_node_i < len(matches) - 1: |
| sel_node_i += 1 |
| |
| if sel_node_i >= scroll + matches_win.getmaxyx()[0] - _SCROLL_OFFSET: |
| scroll = min(scroll + 1, _max_scroll(matches, matches_win)) |
| |
| def select_prev_match(): |
| nonlocal sel_node_i |
| nonlocal scroll |
| |
| if sel_node_i > 0: |
| sel_node_i -= 1 |
| |
| if sel_node_i <= scroll + _SCROLL_OFFSET: |
| scroll = max(scroll - 1, 0) |
| |
| while True: |
| if s != prev_s: |
| # The search text changed. Find new matching nodes. |
| |
| prev_s = s |
| |
| try: |
| regex_searches = [re.compile(regex, re.IGNORECASE).search |
| for regex in s.split()] |
| |
| # No exception thrown, so the regexes are okay |
| bad_re = None |
| |
| # List of (node, node_string) tuples for the matching nodes |
| matches = [] |
| |
| # Go through the list of (node, node_string) tuples, where |
| # 'node_string' describes 'node' |
| for node, node_string in _search_strings(): |
| for search in regex_searches: |
| if not search(node_string): |
| break |
| else: |
| matches.append((node, node_string)) |
| |
| except re.error as e: |
| # Bad regex. Remember the error message so we can show it. |
| bad_re = e.msg |
| matches = [] |
| |
| # Reset scroll and jump to the top of the list of matches |
| sel_node_i = scroll = 0 |
| |
| _draw_jump_to_dialog(edit_box, matches_win, bot_sep_win, help_win, |
| s, s_i, hscroll, |
| bad_re, matches, sel_node_i, scroll) |
| curses.doupdate() |
| |
| |
| c = _get_wch_compat(edit_box) |
| |
| if c == "\n": |
| if matches: |
| _jump_to(matches[sel_node_i][0]) |
| _safe_curs_set(0) |
| return |
| |
| if c == "\x1B": # \x1B = ESC |
| _safe_curs_set(0) |
| return |
| |
| |
| if c == curses.KEY_RESIZE: |
| # We adjust the scroll so that the selected node stays visible in |
| # the list when the terminal is resized, hence the 'scroll' |
| # assignment |
| scroll = _resize_jump_to_dialog( |
| edit_box, matches_win, bot_sep_win, help_win, |
| sel_node_i, scroll) |
| |
| elif c == curses.KEY_DOWN: |
| select_next_match() |
| |
| elif c == curses.KEY_UP: |
| select_prev_match() |
| |
| elif c == curses.KEY_NPAGE: # Page Down |
| # Keep it simple. This way we get sane behavior for small windows, |
| # etc., for free. |
| for _ in range(_PG_JUMP): |
| select_next_match() |
| |
| elif c == curses.KEY_PPAGE: # Page Up |
| for _ in range(_PG_JUMP): |
| select_prev_match() |
| |
| else: |
| s, s_i, hscroll = _edit_text(c, s, s_i, hscroll, |
| edit_box.getmaxyx()[1] - 2) |
| |
| # Obscure Python: We never pass a value for cached_search_strings, and it keeps |
| # pointing to the same list. This avoids a global. |
| def _search_strings(cached_search_strings=[]): |
| # Returns a list with (node, node_string) tuples for all symbol menu nodes, |
| # sorted by symbol name. |
| # |
| # node_string is a string containing the symbol's name and prompt. It is |
| # matched against the regex(es) the user inputs during search, and doubles |
| # as the string displayed for the node in the list of matches. |
| |
| # This is a static list. Only computing it once makes the search dialog |
| # come up a bit faster after the first time it's entered. |
| if not cached_search_strings: |
| # Defined symbols sorted by name, with duplicates removed. |
| # |
| # Duplicates appear when symbols have multiple menu nodes (definition |
| # locations), but they appear in menu order, which isn't what we want |
| # here. We'd still need to go through sym.nodes as well. |
| for sym in sorted(set(_kconf.defined_syms), key=lambda sym: sym.name): |
| for node in sym.nodes: |
| node_string = sym.name |
| if node.prompt: |
| node_string += ' "{}"'.format(node.prompt[0]) |
| cached_search_strings.append((node, node_string)) |
| |
| return cached_search_strings |
| |
| def _resize_jump_to_dialog(edit_box, matches_win, bot_sep_win, help_win, |
| sel_node_i, scroll): |
| # Resizes the jump-to dialog to fill the terminal. |
| # |
| # Returns the new scroll index. We adjust the scroll if needed so that the |
| # selected node stays visible. |
| |
| screen_height, screen_width = stdscr.getmaxyx() |
| |
| bot_sep_win.resize(1, screen_width) |
| |
| help_win_height = len(_JUMP_TO_HELP_LINES) |
| matches_win_height = screen_height - help_win_height - 4 |
| |
| if matches_win_height >= 1: |
| edit_box.resize(3, screen_width) |
| matches_win.resize(matches_win_height, screen_width) |
| help_win.resize(help_win_height, screen_width) |
| |
| matches_win.mvwin(3, 0) |
| bot_sep_win.mvwin(3 + matches_win_height, 0) |
| help_win.mvwin(3 + matches_win_height + 1, 0) |
| else: |
| # Degenerate case. Give up on nice rendering and just prevent errors. |
| |
| matches_win_height = 1 |
| |
| edit_box.resize(screen_height, screen_width) |
| matches_win.resize(1, screen_width) |
| help_win.resize(1, screen_width) |
| |
| for win in matches_win, bot_sep_win, help_win: |
| win.mvwin(0, 0) |
| |
| # Adjust the scroll so that the selected row is still within the window, if |
| # needed |
| if sel_node_i - scroll >= matches_win_height: |
| return sel_node_i - matches_win_height + 1 |
| return scroll |
| |
| def _draw_jump_to_dialog(edit_box, matches_win, bot_sep_win, help_win, |
| s, s_i, hscroll, |
| bad_re, matches, sel_node_i, scroll): |
| edit_width = edit_box.getmaxyx()[1] - 2 |
| |
| |
| # |
| # Update list of matches |
| # |
| |
| matches_win.erase() |
| |
| if matches: |
| for i in range(scroll, |
| min(scroll + matches_win.getmaxyx()[0], len(matches))): |
| |
| _safe_addstr(matches_win, i - scroll, 0, matches[i][1], |
| _LIST_SEL_STYLE if i == sel_node_i else _LIST_STYLE) |
| |
| else: |
| # bad_re holds the error message from the re.error exception on errors |
| _safe_addstr(matches_win, 0, 0, |
| "No matches" |
| if bad_re is None else |
| "Bad regular expression: " + bad_re) |
| |
| matches_win.noutrefresh() |
| |
| |
| # |
| # Update bottom separator line |
| # |
| |
| bot_sep_win.erase() |
| |
| # Draw arrows pointing down if the symbol list is scrolled up |
| if scroll < _max_scroll(matches, matches_win): |
| _safe_hline(bot_sep_win, 0, 4, curses.ACS_DARROW, _N_SCROLL_ARROWS) |
| |
| bot_sep_win.noutrefresh() |
| |
| |
| # |
| # Update help window at bottom |
| # |
| |
| help_win.erase() |
| |
| for i, line in enumerate(_JUMP_TO_HELP_LINES): |
| _safe_addstr(help_win, i, 0, line) |
| |
| help_win.noutrefresh() |
| |
| |
| # |
| # Update edit box. We do this last since it makes it handy to position the |
| # cursor. |
| # |
| |
| edit_box.erase() |
| |
| _draw_frame(edit_box, "Jump to symbol") |
| |
| # Draw arrows pointing up if the symbol list is scrolled down |
| if scroll > 0: |
| # TODO: Bit ugly that _DIALOG_FRAME_STYLE is repeated here |
| _safe_hline(edit_box, 2, 4, curses.ACS_UARROW, _N_SCROLL_ARROWS, |
| _DIALOG_FRAME_STYLE) |
| |
| # Note: Perhaps having a separate window for the input field would be nicer |
| visible_s = s[hscroll:hscroll + edit_width] |
| _safe_addstr(edit_box, 1, 1, visible_s, _INPUT_FIELD_STYLE) |
| |
| _safe_move(edit_box, 1, 1 + s_i - hscroll) |
| |
| edit_box.noutrefresh() |
| |
| def _info_dialog(node): |
| # Shows a fullscreen window with information about 'node' |
| |
| # Top row, with title and arrows point up |
| top_line_win = _styled_win(_SEPARATOR_STYLE) |
| |
| # Text display |
| text_win = _styled_win(_INFO_TEXT_STYLE) |
| text_win.keypad(True) |
| |
| # Bottom separator, with arrows pointing down |
| bot_sep_win = _styled_win(_SEPARATOR_STYLE) |
| |
| # Help window with keys at the bottom |
| help_win = _styled_win(_HELP_STYLE) |
| |
| # Give windows their initial size |
| _resize_info_dialog(top_line_win, text_win, bot_sep_win, help_win) |
| |
| |
| # Get lines of help text |
| lines = _info_str(node).split("\n") |
| |
| # Index of first row in 'lines' to show |
| scroll = 0 |
| |
| while True: |
| _draw_info_dialog(node, lines, scroll, top_line_win, text_win, |
| bot_sep_win, help_win) |
| curses.doupdate() |
| |
| |
| c = _get_wch_compat(text_win) |
| |
| if c == curses.KEY_RESIZE: |
| _resize_info_dialog(top_line_win, text_win, bot_sep_win, help_win) |
| |
| elif c in (curses.KEY_DOWN, "j", "J"): |
| if scroll < _max_scroll(lines, text_win): |
| scroll += 1 |
| |
| elif c in (curses.KEY_NPAGE, "\x04"): # Page Down/Ctrl-D |
| scroll = min(scroll + _PG_JUMP, _max_scroll(lines, text_win)) |
| |
| elif c in (curses.KEY_PPAGE, "\x15"): # Page Up/Ctrl-U |
| scroll = max(scroll - _PG_JUMP, 0) |
| |
| elif c in (curses.KEY_END, "G"): |
| scroll = _max_scroll(lines, text_win) |
| |
| elif c in (curses.KEY_HOME, "g"): |
| scroll = 0 |
| |
| elif c in (curses.KEY_UP, "k", "K"): |
| if scroll > 0: |
| scroll -= 1 |
| |
| elif c in (curses.KEY_LEFT, curses.KEY_BACKSPACE, _ERASE_CHAR, |
| "\x1B", # \x1B = ESC |
| "q", "Q", "h", "H"): |
| |
| return |
| |
| def _resize_info_dialog(top_line_win, text_win, bot_sep_win, help_win): |
| # Resizes the info dialog to fill the terminal |
| |
| screen_height, screen_width = stdscr.getmaxyx() |
| |
| top_line_win.resize(1, screen_width) |
| bot_sep_win.resize(1, screen_width) |
| |
| help_win_height = len(_INFO_HELP_LINES) |
| text_win_height = screen_height - help_win_height - 2 |
| |
| if text_win_height >= 1: |
| text_win.resize(text_win_height, screen_width) |
| help_win.resize(help_win_height, screen_width) |
| |
| text_win.mvwin(1, 0) |
| bot_sep_win.mvwin(1 + text_win_height, 0) |
| help_win.mvwin(1 + text_win_height + 1, 0) |
| else: |
| # Degenerate case. Give up on nice rendering and just prevent errors. |
| |
| text_win.resize(1, screen_width) |
| help_win.resize(1, screen_width) |
| |
| for win in text_win, bot_sep_win, help_win: |
| win.mvwin(0, 0) |
| |
| def _draw_info_dialog(node, lines, scroll, top_line_win, text_win, |
| bot_sep_win, help_win): |
| |
| text_win_height, text_win_width = text_win.getmaxyx() |
| |
| |
| # |
| # Update top row |
| # |
| |
| top_line_win.erase() |
| |
| # Draw arrows pointing up if the information window is scrolled down. Draw |
| # them before drawing the title, so the title ends up on top for small |
| # windows. |
| if scroll > 0: |
| _safe_hline(top_line_win, 0, 4, curses.ACS_UARROW, _N_SCROLL_ARROWS) |
| |
| |
| if isinstance(node.item, Symbol): |
| title = "{}{}".format(_kconf.config_prefix, node.item.name) |
| |
| elif isinstance(node.item, Choice): |
| title = node.item.name or "Choice" |
| |
| elif node.item == MENU: |
| title = 'menu "{}"'.format(node.prompt[0]) |
| |
| else: # node.item == COMMENT |
| title = 'comment "{}"'.format(node.prompt[0]) |
| |
| |
| _safe_addstr(top_line_win, 0, (text_win_width - len(title))//2, title) |
| |
| top_line_win.noutrefresh() |
| |
| |
| # |
| # Update text display |
| # |
| |
| text_win.erase() |
| |
| for i, line in enumerate(lines[scroll:scroll + text_win_height]): |
| _safe_addstr(text_win, i, 0, line) |
| |
| text_win.noutrefresh() |
| |
| |
| # |
| # Update bottom separator line |
| # |
| |
| bot_sep_win.erase() |
| |
| # Draw arrows pointing down if the symbol window is scrolled up |
| if scroll < _max_scroll(lines, text_win): |
| _safe_hline(bot_sep_win, 0, 4, curses.ACS_DARROW, _N_SCROLL_ARROWS) |
| |
| bot_sep_win.noutrefresh() |
| |
| |
| # |
| # Update help window at bottom |
| # |
| |
| help_win.erase() |
| |
| for i, line in enumerate(_INFO_HELP_LINES): |
| _safe_addstr(help_win, i, 0, line) |
| |
| help_win.noutrefresh() |
| |
| def _info_str(node): |
| # Returns information about the menu node 'node' as a string. |
| # |
| # The helper functions are responsible for adding newlines. This allows |
| # them to return "" if they don't want to add any output. |
| |
| if isinstance(node.item, Symbol): |
| sym = node.item |
| |
| return ( |
| _prompt_info(sym) + |
| "Type: {}\n".format(TYPE_TO_STR[sym.type]) + |
| 'Value: "{}"\n\n'.format(sym.str_value) + |
| _help_info(sym) + |
| _direct_dep_info(sym) + |
| _defaults_info(sym) + |
| _select_imply_info(sym) + |
| _kconfig_def_info(sym) |
| ) |
| |
| if isinstance(node.item, Choice): |
| choice = node.item |
| |
| return ( |
| _prompt_info(choice) + |
| "Type: {}\n".format(TYPE_TO_STR[choice.type]) + |
| 'Mode: "{}"\n\n'.format(choice.str_value) + |
| _help_info(choice) + |
| _choice_syms_info(choice) + |
| _direct_dep_info(choice) + |
| _defaults_info(choice) + |
| _kconfig_def_info(choice) |
| ) |
| |
| # node.item in (MENU, COMMENT) |
| return _kconfig_def_info(node) |
| |
| def _prompt_info(sc): |
| # Returns a string listing the prompts of 'sc' (Symbol or Choice) |
| |
| s = "" |
| |
| for node in sc.nodes: |
| if node.prompt: |
| s += "Prompt: {}\n".format(node.prompt[0]) |
| |
| return s |
| |
| def _choice_syms_info(choice): |
| # Returns a string listing the choice symbols in 'choice'. Adds |
| # "(selected)" next to the selected one. |
| |
| s = "Choice symbols:\n" |
| |
| for sym in choice.syms: |
| s += " - " + sym.name |
| if sym is choice.selection: |
| s += " (selected)" |
| s += "\n" |
| |
| return s + "\n" |
| |
| def _help_info(sc): |
| # Returns a string with the help text(s) of 'sc' (Symbol or Choice). |
| # Symbols and choices defined in multiple locations can have multiple help |
| # texts. |
| |
| s = "" |
| |
| for node in sc.nodes: |
| if node.help is not None: |
| s += "Help:\n\n{}\n\n" \ |
| .format(textwrap.indent(node.help, " ")) |
| |
| return s |
| |
| def _direct_dep_info(sc): |
| # Returns a string describing the direct dependencies of 'sc' (Symbol or |
| # Choice). The direct dependencies are the OR of the dependencies from each |
| # definition location. The dependencies at each definition location come |
| # from 'depends on' and dependencies inherited from parent items. |
| |
| if sc.direct_dep is _kconf.y: |
| return "" |
| |
| return 'Direct dependencies (value: "{}"):\n{}\n' \ |
| .format(TRI_TO_STR[expr_value(sc.direct_dep)], |
| _split_expr_info(sc.direct_dep, 2)) |
| |
| def _defaults_info(sc): |
| # Returns a string describing the defaults of 'sc' (Symbol or Choice) |
| |
| if not sc.defaults: |
| return "" |
| |
| s = "Defaults:\n" |
| |
| for val, cond in sc.defaults: |
| s += " - " |
| if isinstance(sc, Symbol): |
| s += '{} (value: "{}")' \ |
| .format(_expr_str(val), TRI_TO_STR[expr_value(val)]) |
| else: |
| # Don't print the value next to the symbol name for choice |
| # defaults, as it looks a bit confusing |
| s += val.name |
| s += "\n" |
| |
| if cond is not _kconf.y: |
| s += ' Condition (value: "{}"):\n{}' \ |
| .format(TRI_TO_STR[expr_value(cond)], |
| _split_expr_info(cond, 7)) |
| |
| return s + "\n" |
| |
| def _split_expr_info(expr, indent): |
| # Returns a string with 'expr' split into its top-level && or || operands, |
| # with one operand per line, together with the operand's value. This is |
| # usually enough to get something readable for long expressions. A fancier |
| # recursive thingy would be possible too. |
| # |
| # indent: |
| # Number of leading spaces to add before the split expression. |
| |
| if len(split_expr(expr, AND)) > 1: |
| split_op = AND |
| op_str = "&&" |
| else: |
| split_op = OR |
| op_str = "||" |
| |
| s = "" |
| for i, term in enumerate(split_expr(expr, split_op)): |
| s += '{}{} {} (value: "{}")\n' \ |
| .format(" "*indent, |
| " " if i == 0 else op_str, |
| _expr_str(term), |
| TRI_TO_STR[expr_value(term)]) |
| return s |
| |
| def _select_imply_info(sym): |
| # Returns a string with information about which symbols 'select' or 'imply' |
| # 'sym'. The selecting/implying symbols are grouped according to which |
| # value they select/imply 'sym' to (n/m/y). |
| |
| s = "" |
| |
| def add_sis(expr, val, title): |
| nonlocal s |
| |
| # sis = selects/implies |
| sis = [si for si in split_expr(expr, OR) if expr_value(si) == val] |
| |
| if sis: |
| s += title |
| for si in sis: |
| s += " - {}\n".format(split_expr(si, AND)[0].name) |
| s += "\n" |
| |
| if sym.rev_dep is not _kconf.n: |
| add_sis(sym.rev_dep, 2, "Symbols currently y-selecting this symbol:\n") |
| add_sis(sym.rev_dep, 1, "Symbols currently m-selecting this symbol:\n") |
| add_sis(sym.rev_dep, 0, "Symbols currently n-selecting this symbol (no effect):\n") |
| |
| if sym.weak_rev_dep is not _kconf.n: |
| add_sis(sym.weak_rev_dep, 2, "Symbols currently y-implying this symbol:\n") |
| add_sis(sym.weak_rev_dep, 1, "Symbols currently m-implying this symbol:\n") |
| add_sis(sym.weak_rev_dep, 0, "Symbols currently n-implying this symbol (no effect):\n") |
| |
| return s |
| |
| def _kconfig_def_info(item): |
| # Returns a string with the definition of 'item' in Kconfig syntax, |
| # together with the definition location(s) |
| |
| nodes = [item] if isinstance(item, MenuNode) else item.nodes |
| |
| s = "Kconfig definition{}, with propagated dependencies\n" \ |
| .format("s" if len(nodes) > 1 else "") |
| s += (len(s) - 1)*"=" + "\n\n" |
| |
| s += "\n\n".join("At {}:{}, in menu {}:\n\n{}".format( |
| node.filename, node.linenr, _menu_path_info(node), |
| textwrap.indent(str(node), " ")) |
| for node in nodes) |
| |
| return s |
| |
| def _menu_path_info(node): |
| # Returns a string describing the menu path leading up to 'node' |
| |
| path = "" |
| |
| menu = node.parent |
| while menu is not _kconf.top_node: |
| path = " -> " + menu.prompt[0] + path |
| menu = menu.parent |
| |
| return "(top menu)" + path |
| |
| def _styled_win(style): |
| # Returns a new curses window with background 'style' and space as the fill |
| # character. The initial dimensions are (1, 1), so the window needs to be |
| # sized and positioned separately. |
| |
| win = curses.newwin(1, 1) |
| win.bkgdset(" ", style) |
| return win |
| |
| def _max_scroll(lst, win): |
| # Assuming 'lst' is a list of items to be displayed in 'win', |
| # returns the maximum number of steps 'win' can be scrolled down. |
| # We stop scrolling when the bottom item is visible. |
| |
| return max(0, len(lst) - win.getmaxyx()[0]) |
| |
| def _edit_text(c, s, i, hscroll, width): |
| # Implements text editing commands for edit boxes. Takes a character (which |
| # could also be e.g. curses.KEY_LEFT) and the edit box state, and returns |
| # the new state after the character has been processed. |
| # |
| # c: |
| # Character from user |
| # |
| # s: |
| # Current contents of string |
| # |
| # i: |
| # Current cursor index in string |
| # |
| # hscroll: |
| # Index in s of the leftmost character in the edit box, for horizontal |
| # scrolling |
| # |
| # width: |
| # Width in characters of the edit box |
| # |
| # Return value: |
| # An (s, i, hscroll) tuple for the new state |
| |
| if c == curses.KEY_LEFT: |
| if i > 0: |
| i -= 1 |
| |
| elif c == curses.KEY_RIGHT: |
| if i < len(s): |
| i += 1 |
| |
| elif c in (curses.KEY_HOME, "\x01"): # \x01 = CTRL-A |
| i = 0 |
| |
| elif c in (curses.KEY_END, "\x05"): # \x05 = CTRL-E |
| i = len(s) |
| |
| elif c in (curses.KEY_BACKSPACE, _ERASE_CHAR): |
| if i > 0: |
| s = s[:i-1] + s[i:] |
| i -= 1 |
| |
| elif c == curses.KEY_DC: |
| s = s[:i] + s[i+1:] |
| |
| elif c == "\x17": # \x17 = CTRL-W |
| # The \W removes characters like ',' one at a time |
| new_i = re.search(r"(?:\w*|\W)\s*$", s[:i]).start() |
| s = s[:new_i] + s[i:] |
| i = new_i |
| |
| elif c == "\x0B": # \x0B = CTRL-K |
| s = s[:i] |
| |
| elif c == "\x15": # \x15 = CTRL-U |
| s = s[i:] |
| i = 0 |
| |
| elif isinstance(c, str): |
| # Insert character |
| |
| s = s[:i] + c + s[i:] |
| i += 1 |
| |
| |
| # Adjust the horizontal scroll if the cursor would be outside the input |
| # field |
| if i < hscroll: |
| hscroll = i |
| elif i >= hscroll + width: |
| hscroll = i - width + 1 |
| |
| |
| return s, i, hscroll |
| |
| def _msg(title, text): |
| # Pops up a message dialog that can be dismissed with Space/Enter/ESC |
| |
| _key_dialog(title, text, " \n") |
| |
| def _error(text): |
| # Pops up an error dialog that can be dismissed with Space/Enter/ESC |
| |
| _msg("Error", text) |
| |
| def _node_str(node): |
| # Returns the complete menu entry text for a menu node. |
| # |
| # Example return value: "[*] Support for X" |
| |
| # Calculate the indent to print the item with by checking how many levels |
| # above it the closest 'menuconfig' item is (this includes menus and |
| # choices as well as menuconfig symbols) |
| indent = 0 |
| parent = node.parent |
| while not parent.is_menuconfig: |
| indent += _SUBMENU_INDENT |
| parent = parent.parent |
| |
| # This approach gives nice alignment for empty string symbols ("() Foo") |
| s = "{:{}} ".format(_value_str(node), 3 + indent) |
| |
| if not node.prompt: |
| # Show the symbol/choice name in <> brackets if it has no prompt. This |
| # path can only hit in show-all mode. |
| s += "<{}>".format(node.item.name) |
| |
| else: |
| if node.item == COMMENT: |
| s += "*** {} ***".format(node.prompt[0]) |
| else: |
| s += node.prompt[0] |
| |
| if isinstance(node.item, Symbol): |
| sym = node.item |
| |
| # Print "(NEW)" next to symbols without a user value (from e.g. a |
| # .config), but skip it for choice symbols in choices in y mode |
| if sym.user_value is None and \ |
| not (sym.choice and sym.choice.tri_value == 2): |
| |
| s += " (NEW)" |
| |
| if isinstance(node.item, Choice) and node.item.tri_value == 2: |
| # Print the prompt of the selected symbol after the choice for |
| # choices in y mode |
| sym = node.item.selection |
| if sym: |
| for node_ in sym.nodes: |
| if node_.prompt: |
| s += " ({})".format(node_.prompt[0]) |
| |
| # Print "--->" next to nodes that have menus that can potentially be |
| # entered. Add "(empty)" if the menu is empty. We don't allow those to be |
| # entered. |
| if node.is_menuconfig: |
| s += " --->" if _shown_nodes(node) else " ---> (empty)" |
| |
| return s |
| |
| def _value_str(node): |
| # Returns the value part ("[*]", "<M>", "(foo)" etc.) of a menu node |
| |
| item = node.item |
| |
| if item in (MENU, COMMENT): |
| return "" |
| |
| # Wouldn't normally happen, and generates a warning |
| if item.type == UNKNOWN: |
| return "" |
| |
| if item.type in (STRING, INT, HEX): |
| return "({})".format(item.str_value) |
| |
| # BOOL or TRISTATE |
| |
| if _is_y_mode_choice_sym(item): |
| return "(X)" if item.choice.selection is item else "( )" |
| |
| tri_val_str = (" ", "M", "*")[item.tri_value] |
| |
| if len(item.assignable) == 1: |
| # Pinned to a single value |
| return "" if isinstance(item, Choice) else "-{}-".format(tri_val_str) |
| |
| if item.type == BOOL: |
| return "[{}]".format(tri_val_str) |
| |
| if item.type == TRISTATE: |
| if item.assignable == (1, 2): |
| return "{{{}}}".format(tri_val_str) # {M}/{*} |
| return "<{}>".format(tri_val_str) |
| |
| def _is_y_mode_choice_sym(item): |
| # The choice mode is an upper bound on the visibility of choice symbols, so |
| # we can check the choice symbols' own visibility to see if the choice is |
| # in y mode |
| return isinstance(item, Symbol) and item.choice and item.visibility == 2 |
| |
| def _check_validity(sym, s): |
| # Returns True if the string 's' is a well-formed value for 'sym'. |
| # Otherwise, displays an error and returns False. |
| |
| if sym.type not in (INT, HEX): |
| # Anything goes for non-int/hex symbols |
| return True |
| |
| base = 10 if sym.type == INT else 16 |
| |
| try: |
| int(s, base) |
| except ValueError: |
| _error("'{}' is a malformed {} value" |
| .format(s, TYPE_TO_STR[sym.type])) |
| return False |
| |
| for low_sym, high_sym, cond in sym.ranges: |
| if expr_value(cond): |
| low = int(low_sym.str_value, base) |
| val = int(s, base) |
| high = int(high_sym.str_value, base) |
| |
| if not low <= val <= high: |
| _error("{} is outside the range {}-{}" |
| .format(s, low_sym.str_value, high_sym.str_value)) |
| |
| return False |
| |
| break |
| |
| return True |
| |
| def _range_info(sym): |
| # Returns a string with information about the valid range for the symbol |
| # 'sym', or None if 'sym' isn't an int/hex symbol |
| |
| if sym.type not in (INT, HEX): |
| return None |
| |
| for low, high, cond in sym.ranges: |
| if expr_value(cond): |
| return "Range: {}-{}".format(low.str_value, high.str_value) |
| |
| return "No range constraints." |
| |
| def _is_num(name): |
| # Heuristic to see if a symbol name looks like a number, for nicer output |
| # when printing expressions. Things like 16 are actually symbol names, only |
| # they get their name as their value when the symbol is undefined. |
| |
| try: |
| int(name, 10) |
| return True |
| |
| except ValueError: |
| if not name.startswith(("0x", "0X")): |
| return False |
| |
| try: |
| int(name, 16) |
| return True |
| |
| except ValueError: |
| return False |
| |
| def _get_wch_compat(win): |
| # Decent resizing behavior on PDCurses requires calling resize_term(0, 0) |
| # after receiving KEY_RESIZE, while NCURSES (usually) handles terminal |
| # resizing automatically in get(_w)ch() (see the end of the |
| # resizeterm(3NCURSES) man page). |
| # |
| # resize_term(0, 0) reliably fails and does nothing on NCURSES, so this |
| # hack gives NCURSES/PDCurses compatibility for resizing. I don't know |
| # whether it would cause trouble for other implementations. |
| |
| c = win.get_wch() |
| if c == curses.KEY_RESIZE: |
| try: |
| curses.resize_term(0, 0) |
| except curses.error: |
| pass |
| |
| return c |
| |
| # Ignore exceptions from some functions that might fail, e.g. for small |
| # windows. They usually do reasonable things anyway. |
| |
| def _safe_curs_set(visibility): |
| try: |
| curses.curs_set(visibility) |
| except curses.error: |
| pass |
| |
| def _safe_addstr(win, *args): |
| try: |
| win.addstr(*args) |
| except curses.error: |
| pass |
| |
| def _safe_addch(win, *args): |
| try: |
| win.addch(*args) |
| except curses.error: |
| pass |
| |
| def _safe_hline(win, *args): |
| try: |
| win.hline(*args) |
| except curses.error: |
| pass |
| |
| def _safe_vline(win, *args): |
| try: |
| win.vline(*args) |
| except curses.error: |
| pass |
| |
| def _safe_move(win, *args): |
| try: |
| win.move(*args) |
| except curses.error: |
| pass |
| |
| def _convert_c_lc_ctype_to_utf8(): |
| # See _CONVERT_C_LC_CTYPE_TO_UTF8 |
| |
| if _IS_WINDOWS: |
| # Windows rarely has issues here, and the PEP 538 implementation avoids |
| # changing the locale on it. None of the UTF-8 locales below were |
| # supported from some quick testing either. Play it safe. |
| return |
| |
| def _try_set_locale(loc): |
| try: |
| locale.setlocale(locale.LC_CTYPE, loc) |
| return True |
| except locale.Error: |
| return False |
| |
| # Is LC_CTYPE set to the C locale? |
| if locale.setlocale(locale.LC_CTYPE, None) == "C": |
| # This list was taken from the PEP 538 implementation in the CPython |
| # code, in Python/pylifecycle.c |
| for loc in "C.UTF-8", "C.utf8", "UTF-8": |
| if _try_set_locale(loc): |
| print("Note: Your environment is configured to use ASCII. To " |
| "avoid Unicode issues, LC_CTYPE was changed from the " |
| "C locale to the {} locale.".format(loc)) |
| break |
| |
| # Are we running on Windows? |
| _IS_WINDOWS = (platform.system() == "Windows") |
| |
| if __name__ == "__main__": |
| if len(sys.argv) > 2: |
| print("usage: {} [Kconfig]".format(sys.argv[0]), file=sys.stderr) |
| sys.exit(1) |
| |
| menuconfig(Kconfig("Kconfig" if len(sys.argv) < 2 else sys.argv[1])) |
