From 5e46c4df650e55e4f00295f9063486b32a664019 Mon Sep 17 00:00:00 2001
From: Josef Fortier <fortier@augsburg.edu>
Date: Fri, 22 Feb 2019 22:31:14 -0600
Subject: [PATCH 1/1] Add password rotation

password-store uses pwgen when called as pass generate. This is not
easily available afterward. Mapping a pwgen password to
increment/decrement
---
 autoload/password_store.vim | 22 ++++++++++++++++++++++
 doc/vim-password-store.txt  | 34 +++++++++++++++++++++++++++-------
 ftplugin/pass.vim           | 13 +++++++++++--
 3 files changed, 60 insertions(+), 9 deletions(-)
 create mode 100644 autoload/password_store.vim

diff --git a/autoload/password_store.vim b/autoload/password_store.vim
new file mode 100644
index 0000000..b5eaf90
--- /dev/null
+++ b/autoload/password_store.vim
@@ -0,0 +1,22 @@
+" setup known state
+if exists('did_password_store') 
+      "  || &compatible 
+      "  || version < 700}
+    finish
+endif
+let g:did_password_store = '1'
+let s:save_cpo = &cpoptions
+set compatible&vim
+"echo 'main code'}}
+" Return vim to users choice
+function! password_store#generate() abort
+    if executable('pwgen')
+        return systemlist('pwgen -N1 ' . g:password_store_pw_length )[0]
+    endif
+endfunction
+
+function! password_store#replace() abort
+    execute 's/\<.*\>/' . password_store#generate() . '/'
+endfunction
+
+let &cpoptions = s:save_cpo
diff --git a/doc/vim-password-store.txt b/doc/vim-password-store.txt
index 03a42c0..eca22ab 100644
--- a/doc/vim-password-store.txt
+++ b/doc/vim-password-store.txt
@@ -29,17 +29,37 @@ The plugin automatically loads when it sees the appropriate file paths
 for password-store. This is Tom Ryders 
 
 There are two functions:
-
+>
   :Conceal
   :Reveal
-
+<
 That apply syntax highlighting to obscure and un-obscure the password.
 By default the pass file loads in obscured mode, however when the cursor is on
-the file it's quite likely readable and editable.
-
-This offers minor "shoulder surfing" protection, facilitating editing of
-metadata, such as adding URLs etc.
-
+the word it should readable and editable. This offers minor "shoulder surfing"
+protection, facilitating editing of metadata, such as adding URLs etc.
+
+There's minor feedback for short passwords, with Error highlighting for
+passwords 6 or less characters long.
+
+Password store also adds password generation support via pwgen. Since
+password-store already leverages pwgen, this is a fairly safe assumption.
+There is a Plug mapping *<Plug>rotate_password*
+by default this is mapped to <C-X> and <C-A> but can be overridden via setting
+an alternate plug mapping
+>
+  nnoremap >M-a> <Plug>rotate_password
+<
+The mapped sequence will generate a random password. As neither decrement nor
+increment mean anything in this context, buth are mapped to the same plug.
+The default length of the password is 10 character, but
+modifiable by altering the global g:password_store_pwlength
+>
+  let g:password_store_pwlength = 20
+<
+This is also available via the function call(s)
+>
+   password_store#replace()
+<
 4. Licence                                            *password-store-licence*
 
 This plugin is licensed under the same terms as vim itself (see
diff --git a/ftplugin/pass.vim b/ftplugin/pass.vim
index f728b00..1373778 100644
--- a/ftplugin/pass.vim
+++ b/ftplugin/pass.vim
@@ -1,4 +1,4 @@
-if exists('did_pass_ftplugin') || &compatible  || version < 700
+if exists('did_pass_ftplugin') || &compatible  || v:version < 700
     finish
 endif
 let g:did_pass = 'did_pass_ftplugin'
@@ -6,6 +6,15 @@ let s:save_cpo = &cpoptions
 set compatible&vim
 
 
+if ! exists('g:password_store_pw_length')
+    let g:password_store_pw_length = 12
+endif
+
+nmap <buffer> <Plug>rotate_password :call password_store#replace()<Cr>
+if ! hasmapto( '\<Plug>rotate_password', 'n')
+    nmap <C-X> <Plug>rotate_password
+endif
+
 setlocal nospell
 
 
@@ -44,7 +53,7 @@ function! s:conceal_pass() abort
     highlight! password_store_password guifg=DarkGray guibg=DarkGray ctermfg=8 ctermbg=8
 endfunction
 command! Conceal call <SID>conceal_pass()
-normal GG
+normal! GG
 
 " Cleanup at end
 let &cpoptions = s:save_cpo
-- 
2.39.5