;;; pass.el --- Major mode for password-store.el -*- lexical-binding: t; -*-
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;; Copyright (C) 2015-2016 Nicolas Petton & Damien Cassou
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;; Author: Nicolas Petton <petton.nicolas@gmail.com>
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;; Damien Cassou <damien@cassou.me>
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;; Version: 1.6
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;; GIT: https://github.com/NicolasPetton/pass
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;; Package-Requires: ((emacs "24") (password-store "0.1") (f "0.17"))
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;; Created: 09 Jun 2015
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;; Keywords: password-store, password, keychain
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Major mode for password-store.el
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;;; Code:
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(require 'password-store)
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(require 'imenu)
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(require 'f)
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(defgroup pass '()
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"Major mode for password-store."
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:group 'password-store)
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(defvar pass-buffer-name "*Password-Store*"
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"Name of the pass buffer.")
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(defvar pass-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map (kbd "n") #'pass-next-entry)
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(define-key map (kbd "p") #'pass-prev-entry)
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(define-key map (kbd "M-n") #'pass-next-directory)
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(define-key map (kbd "M-p") #'pass-prev-directory)
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(define-key map (kbd "k") #'pass-kill)
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(define-key map (kbd "s") #'isearch-forward)
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(define-key map (kbd "?") #'describe-mode)
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(define-key map (kbd "g") #'pass-update-buffer)
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(define-key map (kbd "i") #'pass-insert)
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(define-key map (kbd "I") #'pass-insert-generated)
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(define-key map (kbd "w") #'pass-copy)
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(define-key map (kbd "v") #'pass-view)
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(define-key map (kbd "r") #'pass-rename)
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(define-key map (kbd "RET") #'pass-view)
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(define-key map (kbd "q") #'pass-quit)
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map)
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"Keymap for `pass-mode'.")
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(defface pass-mode-header-face '((t . (:inherit font-lock-keyword-face)))
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"Face for displaying the header of the pass buffer."
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:group 'pass)
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(defface pass-mode-entry-face '((t . ()))
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"Face for displaying pass entry names."
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:group 'pass)
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(defface pass-mode-directory-face '((t . (:inherit
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font-lock-function-name-face
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:weight
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bold)))
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"Face for displaying password-store directory names."
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:group 'pass)
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(define-derived-mode pass-mode nil "Password-Store"
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"Major mode for editing password-stores.
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\\{pass-mode-map}"
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(setq default-directory (password-store-dir))
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(setq-local imenu-generic-expression '((nil "├──\\ \\(.*\\)" 1)))
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(read-only-mode))
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(defun pass-setup-buffer ()
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"Setup the password-store buffer."
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(pass-mode)
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(pass-update-buffer))
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;;;###autoload
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(defun pass ()
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"Open the password-store buffer."
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(interactive)
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(if (get-buffer pass-buffer-name)
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(progn
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(switch-to-buffer pass-buffer-name)
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(pass-update-buffer))
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(let ((buf (get-buffer-create pass-buffer-name)))
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(pop-to-buffer buf)
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(pass-setup-buffer))))
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(defmacro pass--with-writable-buffer (&rest body)
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"Evaluate BODY as if the current buffer was not in `read-only-mode'."
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(declare (indent 0) (debug t))
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`(let ((inhibit-read-only t))
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,@body))
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(defmacro pass--save-point (&rest body)
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"Evaluate BODY and restore the point.
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Similar to `save-excursion' but only restore the point."
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(declare (indent 0) (debug t))
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(let ((point (make-symbol "point")))
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`(let ((,point (point)))
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,@body
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(goto-char (min ,point (point-max))))))
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(defun pass-quit ()
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"Kill the buffer quitting the window."
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(interactive)
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(when (y-or-n-p "Kill all pass entry buffers? ")
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(dolist (buf (buffer-list))
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(with-current-buffer buf
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(when (eq major-mode 'pass-view-mode)
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(kill-buffer buf)))))
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(quit-window t))
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(defun pass-next-entry ()
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"Move point to the next entry found."
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(interactive)
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(pass--goto-next #'pass-entry-at-point))
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(defun pass-prev-entry ()
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"Move point to the previous entry."
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(interactive)
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(pass--goto-prev #'pass-entry-at-point))
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(defun pass-next-directory ()
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"Move point to the next directory found."
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(interactive)
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(pass--goto-next #'pass-directory-at-point))
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(defun pass-prev-directory ()
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"Move point to the previous directory."
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(interactive)
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(pass--goto-prev #'pass-directory-at-point))
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(defmacro pass--with-closest-entry (varname &rest body)
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"Bound VARNAME to the closest entry before point and evaluate BODY."
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(declare (indent 1) (debug t))
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`(let ((,varname (pass-closest-entry)))
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(if ,varname
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(progn ,@body)
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(message "No entry at point"))))
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(defun pass-rename (new-name)
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"Rename the entry at point to NEW-NAME."
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(interactive (list (read-string "Rename entry to: " (pass-closest-entry))))
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(pass--with-closest-entry entry
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(password-store-rename entry new-name)
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(pass-update-buffer)))
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(defun pass-kill ()
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"Remove the entry at point."
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(interactive)
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(pass--with-closest-entry entry
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(when (yes-or-no-p (format "Do you want remove the entry %s? " entry))
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(password-store-remove entry)
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(pass-update-buffer))))
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(defun pass-update-buffer ()
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"Update the current buffer contents."
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(interactive)
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(pass--save-point
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(pass--with-writable-buffer
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(delete-region (point-min) (point-max))
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(pass-display-data))))
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(defun pass-insert ()
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"Insert an entry to the password-store.
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The password is read from user input."
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(interactive)
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(call-interactively #'password-store-insert)
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(pass-update-buffer))
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(defun pass-insert-generated ()
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"Insert an entry to the password-store.
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Use a generated password instead of reading the password from
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user input."
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(interactive)
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(call-interactively #'password-store-generate)
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(pass-update-buffer))
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(defun pass-view ()
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"Visit the entry at point."
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(interactive)
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(pass--with-closest-entry entry
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(password-store-edit entry)))
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(defun pass-copy ()
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"Add the entry at point to kill ring."
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(interactive)
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(pass--with-closest-entry entry
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(password-store-copy entry)))
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(defun pass-display-data ()
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"Display the password-store data into the current buffer."
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(let ((items (pass--tree)))
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(pass-display-header)
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(pass-display-item items)))
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(defun pass-display-header ()
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"Display the header in to the current buffer."
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(insert "Password-store directory:")
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(put-text-property (point-at-bol) (point) 'face 'pass-mode-header-face)
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(newline)
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(newline))
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(defun pass-display-item (item &optional indent-level)
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"Display the directory or entry ITEM into the current buffer.
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If INDENT-LEVEL is specified, add enough spaces before displaying
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ITEM."
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(unless indent-level (setq indent-level 0))
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(let ((directory (listp item)))
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(pass-display-item-prefix indent-level)
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(if directory
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(pass-display-directory item indent-level)
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(pass-display-entry item))))
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(defun pass-display-entry (entry)
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"Display the password-store entry ENTRY into the current buffer."
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(let ((entry-name (f-filename entry)))
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(insert entry-name)
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(add-text-properties (point-at-bol) (point)
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`(face pass-mode-entry-face pass-entry ,entry))
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(newline)))
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(defun pass-display-directory (directory indent-level)
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"Display the directory DIRECTORY into the current buffer.
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DIRECTORY is a list, its CAR being the name of the directory and its CDR
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the entries of the directory. Add enough spaces so that each entry is
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indented according to INDENT-LEVEL."
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(let ((name (car directory))
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(items (cdr directory)))
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(when (not (string= name ".git"))
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(insert name)
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(add-text-properties (point-at-bol) (point)
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`(face pass-mode-directory-face pass-directory ,name))
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(newline)
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(dolist (item items)
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(pass-display-item item (1+ indent-level))))))
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(defun pass-display-item-prefix (indent-level)
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"Display some indenting text according to INDENT-LEVEL."
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(dotimes (_ (max 0 (* (1- indent-level) 4)))
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(insert " "))
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(unless (zerop indent-level)
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(insert "├── ")))
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(defun pass-entry-at-point ()
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"Return the `pass-entry' property at point."
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(get-text-property (point) 'pass-entry))
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(defun pass-directory-at-point ()
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"Return the `pass-directory' property at point."
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(get-text-property (point) 'pass-directory))
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(defun pass-closest-entry ()
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"Return the closest entry in the current buffer, looking backward."
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(save-excursion
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(unless (bobp)
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(or (pass-entry-at-point)
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(progn
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(forward-line -1)
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(pass-closest-entry))))))
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(defun pass--goto-next (pred)
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"Move point to the next match of PRED."
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(forward-line)
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(while (not (or (eobp) (funcall pred)))
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(forward-line)))
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(defun pass--goto-prev (pred)
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"Move point to the previous match of PRED."
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(forward-line -1)
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(while (not (or (bobp) (funcall pred)))
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(forward-line -1)))
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(defun pass--tree (&optional subdir)
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"Return a tree of all entries in SUBDIR.
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If SUBDIR is nil, return the entries of `(password-store-dir)'."
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(unless subdir (setq subdir ""))
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(let ((path (f-join (password-store-dir) subdir)))
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(delq nil
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(if (f-directory? path)
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(cons (f-filename path)
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(mapcar 'pass--tree
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(f-entries path)))
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(when (equal (f-ext path) "gpg")
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(password-store--file-to-entry path))))))
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;;; major mode for viewing entries
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(defvar pass-view-mask "·············"
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"Mask used to hide passwords.")
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(defvar pass-view-mode-map
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(let ((map (make-sparse-keymap)))
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(define-key map (kbd "C-c C-c") #'pass-view-toggle-password)
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(define-key map (kbd "C-c C-w") #'pass-view-copy-password)
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map))
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(defun pass-view-toggle-password ()
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"Enable or disable password hiding."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(let ((buf-modified (buffer-modified-p)))
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(if (string= (get-text-property (point) 'display)
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pass-view-mask)
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(pass-view-unmask-password)
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(pass-view-mask-password))
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(set-buffer-modified-p buf-modified))))
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(defun pass-view-copy-password ()
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"Copy the password of the entry in the current buffer."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(copy-region-as-kill (point) (line-end-position))))
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(defun pass-view-mask-password ()
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"Mask the password of the current buffer."
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(let ((inhibit-read-only t))
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(save-excursion
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(goto-char (point-min))
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(set-text-properties (point-min) (line-end-position)
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`(display ,pass-view-mask)))))
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(defun pass-view-unmask-password ()
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"Show the password in the current buffer."
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(save-excursion
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(goto-char (point-min))
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(remove-text-properties (point-min) (line-end-position)
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'(display nil))))
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(defvar pass-view-font-lock-keywords '("^[^:\n]+:" . 'font-lock-keyword-face)
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"Font lock keywords for pass-view-mode.")
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(define-derived-mode pass-view-mode nil "Pass-View"
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"Major mode for viewing password-store entries.
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\\{pass-view-mode-map}"
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(pass-view-toggle-password)
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(setq-local font-lock-defaults '(pass-view-font-lock-keywords))
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(font-lock-mode 1)
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(message
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(substitute-command-keys
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"Press <\\[pass-view-toggle-password]> to display & edit the password")))
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(add-to-list 'auto-mode-alist '("\\.password-store/" . pass-view-mode))
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(provide 'pass)
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;;; pass.el ends here
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