"""""""""""""
" SHORTCUTS "
"""""""""""""
"   F1          help
"   F2          open file
"   F3          search
"   F4          open include file
"   F5          go to declaration
"   F6          go to definition
"   F7          go to calls
"   F8          view tag list
" S-F8          build ctags/cscope databases
"   F9          view changes
"   F10         folding ?
"   F11         unhighlight search
"   F12         paste mode
" C-left/right  switch tab
" C-up/down     switch window
" M-left/right  horizontal size
" M-up/down     vertical size

"""""""""""
" GENERAL "
"""""""""""
" disable vi-compatible mode
set nocompatible

""""""""
" SAVE "
""""""""
" disable backup
set nobackup
" save before compilation
set autowrite
" jump to last known position when reopening a file
if has("autocmd")
	autocmd BufReadPost *
		\ if line("'\"") > 0 && line("'\"") <= line("$") |
		\   execute "normal! g`\"" |
		\ endif
endif
" command line history
set history=50

"""""""""
" INPUT "
"""""""""
" allow backspacing in insert mode
set backspace=indent,eol,start
" don't use Ex mode, use Q for formatting
map Q gq
" disable mouse
set mouse=a
" key combination timeout
set notimeout
"set timeoutlen=4000
" set timeout for multicharacter keys codes (like <F1>)
set ttimeout
" set timeout to tenth of a second (could be increased for slow terminals)
set ttimeoutlen=100
" key event timeout
set updatetime=1000

"""""""""""
" DISPLAY "
"""""""""""
" color palette
set t_Co=256
" syntax highlighting when the terminal has colors
if &t_Co > 2 || has("gui_running")
	syntax on
	" my colors
	set background=dark
	highlight clear
	if exists("syntax_on")
		syntax reset
	endif
if &t_Co == 256
	highlight! Normal         ctermfg=77          ctermbg=Black
	highlight! Statement      ctermfg=254         ctermbg=Black
	highlight! Comment        ctermfg=191         ctermbg=Black
	highlight! PreProc        ctermfg=200         ctermbg=Black
else
	highlight! Normal         ctermfg=Green       ctermbg=Black
	highlight! Statement      ctermfg=White       ctermbg=Black
	highlight! Comment        ctermfg=Yellow      ctermbg=Black
	highlight! PreProc        ctermfg=Magenta     ctermbg=Black
endif
	highlight! Constant       ctermfg=Red         ctermbg=Black
	highlight! def link Structure Statement
	highlight! def link StorageClass Statement
	highlight! Type           ctermfg=Grey        ctermbg=Black
	highlight! def link Identifier Type
	highlight! Todo           ctermfg=Black       ctermbg=DarkRed
	highlight! Search         ctermfg=Black       ctermbg=Yellow
	highlight! def link IncSearch Visual
if &t_Co == 256
	highlight! DiffAdd                            ctermbg=54          cterm=none
	highlight! DiffDelete     ctermfg=Black       ctermbg=54          cterm=none
else
	highlight! DiffAdd                            ctermbg=DarkMagenta cterm=none
	highlight! DiffDelete     ctermfg=Black       ctermbg=DarkMagenta cterm=none
endif
	highlight! def link DiffChange DiffAdd
	highlight! DiffText       ctermfg=White       ctermbg=DarkBlue    cterm=none
	highlight! def link Folded TabLineSel
	highlight! def link FoldColumn Folded
	highlight! MatchParen                         ctermbg=Blue
if &t_Co == 256
	highlight! BadWhitespace                      ctermbg=235
elseif &t_Co > 8
	highlight! BadWhitespace                      ctermbg=DarkGrey
else
	highlight! BadWhitespace                      ctermbg=DarkCyan
endif
	highlight! Pmenu          ctermfg=Grey        ctermbg=DarkBlue
if &t_Co > 8
	highlight! PmenuSel       ctermfg=Yellow      ctermbg=Blue
else
	highlight! PmenuSel       ctermfg=Yellow      ctermbg=Cyan
endif
	highlight! def link PmenuSbar Pmenu
	highlight! PmenuThumb                         ctermbg=DarkMagenta cterm=none
if &t_Co == 256
	highlight! LineNr         ctermfg=DarkCyan    ctermbg=235
	highlight! CursorLine                         ctermbg=236         cterm=none
else
	highlight! LineNr         ctermfg=DarkCyan    ctermbg=Black
	highlight! CursorLine                         ctermbg=DarkGrey    cterm=none
endif
	highlight! def link CursorColumn CursorLine
	highlight! Visual         ctermfg=White       ctermbg=Blue        cterm=none
	highlight! VertSplit      ctermfg=Grey        ctermbg=Grey        cterm=none
	highlight! StatusLine     ctermfg=Black       ctermbg=Grey        cterm=none
if &t_Co > 8
	highlight! StatusLineNC   ctermfg=DarkGrey    ctermbg=Grey        cterm=none
else
	highlight! StatusLineNC   ctermfg=Cyan        ctermbg=Grey        cterm=none
endif
	highlight! def link TabLine StatusLineNC
	highlight! def link TabLineFill TabLine
if &t_Co == 256
	highlight! TabLineSel     ctermfg=White       ctermbg=235         cterm=none
elseif &t_Co > 8
	highlight! TabLineSel     ctermfg=White       ctermbg=Black       cterm=none
else
	highlight! TabLineSel     ctermfg=White       ctermbg=Black
endif
	highlight! ModeMsg        ctermfg=DarkCyan    ctermbg=Black
	highlight! WarningMsg     ctermfg=Yellow      ctermbg=Black
	highlight! ErrorMsg       ctermfg=Red         ctermbg=Black
endif
" highlight the cursor line
set cursorline
" show the status line
set laststatus=2
" show the cursor position
set ruler
" show mode
set showmode
" display incomplete commands
set showcmd
" display line number"
set number

"""""""""""""""
" INDENTATION "
"""""""""""""""
if has("autocmd")
	" enable file type detection and do language-dependent indenting
	filetype plugin indent on
else
	" auto-indent
	set autoindent
	" smart-indent
	set smartindent
	" C-indent
	"set cindent
	" indent-expr
	"set indentexpr ""
endif
" tab=4
set tabstop=4
set softtabstop=4
set shiftwidth=4
" real tabs
set noexpandtab
" use tabs at the start of a line, spaces elsewhere
set smarttab
if has("autocmd")
	" python
	" autocmd FileType python set tabstop=4|set shiftwidth=4|set expandtab
    autocmd BufRead,BufNewFile *.py syntax on
    autocmd BufRead,BufNewFile *.py set ai
    autocmd BufRead,BufNewFile *.py set smartindent cinwords=if,elif,else,for,while,try,except,finally,def,class
    set tabstop=4
    set expandtab
    set shiftwidth=4
    set softtabstop=4
    set modeline

endif
" define whitespaces at end of line as bad whitespaces
match BadWhitespace /\s\+$/
" define extra spaces at the front of the line as bad whitespaces
match BadWhitespace /^\ \+/
" define redundant whitespaces as bad whitespaces
match BadWhitespace /\s\+$\| \+\ze\t/

""""""""""
" SEARCH "
""""""""""
" highlight search
set hlsearch
" unhighlight current search
map <silent> <F11> :nohlsearch<CR>
imap <F11> <ESC><F11>a
" highlight search while typing
set incsearch
" show matching brackets
set showmatch
" tenths of a second before blink matching brackets
set mat=5
" search word and list lines to jump with F3
map <F3> [I:let nr = input("Which one: ") <Bar>execute "normal " . nr ."[\t"<CR>
" go to declaration with F5
map <silent> <F5> gd:nohlsearch<CR>
imap <F5> <ESC><F5>i
" try to go to definition or declaration with , and go back with ;
function GoToDefinition()
	try
		execute "cscope find g " . expand("<cword>")
	catch /:E259:/
		try
			execute "tag " . expand("<cword>")
		catch /:E257:/
			execute "normal! gd"
			execute "nohlsearch"
		endtry
	endtry
endfunction
nmap <silent> , :call GoToDefinition()<CR>
nmap <silent> ; <C-t>
" plugin taglist
let Tlist_Ctags_Cmd = '/usr/bin/ctags'
let Tlist_Process_File_Always = 1
let Tlist_Exit_OnlyWindow = 1
"let Tlist_Close_On_Select = 1
let Tlist_Auto_Highlight_Tag = 1
let Tlist_Display_Prototype = 0
let Tlist_Display_Tag_Scope = 0
let Tlist_Show_One_File = 1
let Tlist_Compact_Format = 1
let Tlist_Enable_Fold_Column = 0
"let Tlist_File_Fold_Auto_Close = 1
let Tlist_Inc_Winwidth = 0
"let Tlist_Use_Horiz_Window = 1
let Tlist_Use_Right_Window = 1
" open/close tag list window with F8
map <silent> <F8> :TlistToggle<CR>
" shown current tag in status bar
set statusline=%<%f\ %h%m%r%=%([%{Tlist_Get_Tagname_By_Line()}]%)%3.(\ %)%-14.(%l,%c%V%)\ %P
" plugin omnicppcomplete
let OmniCpp_ShowAccess = 0
let OmniCpp_LocalSearchDecl=1
" if compiled with --enable-cscope
if has("cscope")
	" use both cscope and ctag for 'ctrl-]', ':ta', and 'vim -t'
	set cscopetag
	" use ctags before cscope
	set csto=1
	" add any cscope database in current directory
	if filereadable("cscope.out")
		cscope add cscope.out
	" else add the database pointed by environment variable
	elseif $CSCOPE_DB != ""
		cscope add $CSCOPE_DB
	endif
	" show message when any other cscope db added
	set cscopeverbose
	" open include file with F4 and split with shift+F4
	nmap <F4> :cscope find f <C-R>=expand("<cfile>")<CR><CR>
	nmap <S-F4> :scscope find f <C-R>=expand("<cfile>")<CR><CR>
	" go to definition with F6 and split with shift+F6 and use ctags with alt+shift+F6
	nmap <F6> :cscope find g <C-R>=expand("<cword>")<CR><CR>
	nmap <S-F6> :scscope find g <C-R>=expand("<cword>")<CR><CR>
	nmap <M-S-F6> :tag <C-R>=expand("<cword>")<CR><CR>
	" go to calls with F7 and split with shift+F7
	nmap <F7> :cscope find c <C-R>=expand("<cword>")<CR><CR>
	nmap <S-F7> :scscope find c <C-R>=expand("<cword>")<CR><CR>
	" go to ... with 'ctrl+s letter' and go back with ctrl+t
	nmap <C-s>s :cscope find s <C-R>=expand("<cword>")<CR><CR>
	nmap <C-s>g :cscope find g <C-R>=expand("<cword>")<CR><CR>
	nmap <C-s>c :cscope find c <C-R>=expand("<cword>")<CR><CR>
	nmap <C-s>t :cscope find t <C-R>=expand("<cword>")<CR><CR>
	nmap <C-s>e :cscope find e <C-R>=expand("<cword>")<CR><CR>
	nmap <C-s>f :cscope find f <C-R>=expand("<cfile>")<CR><CR>
	nmap <C-s>i :cscope find i ^<C-R>=expand("<cfile>")<CR>$<CR>
	nmap <C-s>d :cscope find d <C-R>=expand("<cword>")<CR><CR>
	" split to ... with 'ctrl+space letter'
	nmap <C-@>s :scscope find s <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@>g :scscope find g <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@>c :scscope find c <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@>t :scscope find t <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@>e :scscope find e <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@>f :scscope find f <C-R>=expand("<cfile>")<CR><CR>
	nmap <C-@>i :scscope find i ^<C-R>=expand("<cfile>")<CR>$<CR>
	nmap <C-@>d :scscope find d <C-R>=expand("<cword>")<CR><CR>
	" vertical split to ... with 'ctrl+space ctrl+space letter'
	nmap <C-@><C-@>s :vertical scscope find s <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@><C-@>g :vertical scscope find g <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@><C-@>c :vertical scscope find c <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@><C-@>t :vertical scscope find t <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@><C-@>e :vertical scscope find e <C-R>=expand("<cword>")<CR><CR>
	nmap <C-@><C-@>f :vertical scscope find f <C-R>=expand("<cfile>")<CR><CR>
	nmap <C-@><C-@>i :vertical scscope find i ^<C-R>=expand("<cfile>")<CR>$<CR>
	nmap <C-@><C-@>d :vertical scscope find d <C-R>=expand("<cword>")<CR><CR>
	" s  symbol    find all references to the token under cursor
	" g  global    find global definition of the token under cursor
	" c  calls     find all calls to the function name under cursor
	" t  text      find all instances of the text under cursor
	" e  egrep     egrep search for the word under cursor
	" f  file      open the filename under cursor
	" i  includes  find files that include the filename under cursor
	" d  called    find functions that function under cursor calls
endif
" build tags database with shift+F8
if has("cscope")
	command! TagsBuild
		\ :!echo "building ctags and cscope databases..." &&
		\   ctags --c++-kinds=+p --fields=+iaS --extra=+q -R &&
		\   cscope -bR
	map <S-F8> :TagsBuild<CR><CR>:cscope reset<CR><CR>
else
	command! TagsBuild
		\ :!echo "building ctags database..." &&
		\   ctags --c++-kinds=+p --fields=+iaS --extra=+q -R
	map <S-F8> :TagsBuild<CR><CR>
endif
" close preview window after a completion
if has("autocmd")
	autocmd CursorMovedI *.{[hc],cpp} if pumvisible() == 0|pclose|endif
	autocmd InsertLeave *.{[hc],cpp} if pumvisible() == 0|pclose|endif
endif

"""""""""
" PASTE "
"""""""""
" set/unset paste mode with F12/shift+F12
map <F12> :set paste<CR>
map <S-F12> :set nopaste<CR>
imap <F12> <C-O>:set paste<CR>
imap <S-F12> <nop>
set pastetoggle=<S-F12>
" paste with reindent with Esc prefix
nnoremap <Esc>P P'[v']=
nnoremap <Esc>p p'[v']=

""""""""""
" WINDOW "
""""""""""
" create window below or at right of the current one
set splitbelow
set splitright
" if multiple windows
if bufwinnr(1)
	" vertically increase/decrease window size with alt+up/alt+down
	map <M-Up> <C-W>+
	map <M-Down> <C-W>-
	imap <M-Up> <ESC><M-Up>a
	imap <M-Down> <ESC><M-Down>a
	" horizontally increase/decrease window size with alt+right/alt+left
	map <M-Right> <C-W>>
	map <M-Left> <C-W><
	imap <M-Right> <ESC><M-Right>a
	imap <M-Left> <ESC><M-Left>a
	" switch to next/previous tab with ctrl+right/ctrl+left
	map <C-Right> gt
	map <C-Left> gT
	imap <C-Right> <ESC><C-Right>a
	imap <C-Left> <ESC><C-Left>a
	" switch to next/previous window with ctrl+down/ctrl+up
	map <C-Down> <C-W>w
	map <C-Up> <C-W>W
	imap <C-Down> <ESC><C-Down>a
	imap <C-Up> <ESC><C-Up>a
endif
" open automatically quickfix window
if has("autocmd")
	autocmd QuickFixCmdPost * cw
endif
" open a file in the same directory as the current file with F2 and split with shift+F2
map <F2> :tabe <C-R>=expand("%:h") . "/"<CR>
nmap <S-F2> :split <C-R>=expand("%:h") . "/"<CR>

""""""""
" HELP "
""""""""
" allow embedded man page
runtime! ftplugin/man.vim
" show vimrc with shift+F1
nmap <silent> <S-F1> :sview ~/.vimrc<CR>gg
imap <F1> <Esc><S-F1>
" show contextual help with F1
function Help()
	try
		execute "Man " . expand("<cword>")
	catch /:E149:/
		execute "help " . expand("<cword>")
	endtry
endfunction
nmap <silent> <F1> :call Help()<CR>
imap <S-F1> <Esc><F1>
" show VIM help with alt+shift+F1
nmap <silent> <M-S-F1> :help <C-R>=expand("<cword>")<CR><CR>
imap <M-S-F1> <Esc><M-S-F1>

"""""""""
" TOOLS "
"""""""""
" show current changes with F9
command! DiffOrig
	\ vert new | set bt=nofile | r # | 0d_ | diffthis | wincmd p | diffthis
map <F9> :DiffOrig<CR>
imap <F9> <ESC><F9>a
" show git diff when committing
let g:git_diff_spawn_mode = 1
if has("autocmd")
	autocmd BufRead,BufNewFile COMMIT_EDITMSG setf git
endif

set runtimepath=~/.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/@VIMCUR@,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after