" make vim unusable for anyone else
" from the get-go, we assume version >= 703

set nocompatible                      " screw vi

" hacks {{{1
if has('multi_byte')
    scriptencoding utf-8              " allow it in this script
    set termencoding=utf-8            " and this terminal supports it
    set encoding=utf-8                " and the default file is in it
endif

" awful things
if has("win32")
    " assume directory structure:
    " something/anything/.vimrc       " this was passed to vim by the -u switch
    " something/vim/
    " something/vim/after
    let $MYVIMRC=expand('<sfile>')
    let g:rcvim=expand('<sfile>:p:h:h').'/vim'
else
    let g:rcvim=$HOME.'/.vim'
endif

let &backupdir=g:rcvim.'/backup'      " stash tilde files elsewhere
" the double slash at the end dumps the path of the file for uniqueness
let &directory=g:rcvim.'/swp//'       " stash swap files too
let &undodir=g:rcvim.'/undo/'         " undo files are cool
try | call mkdir(&backupdir, "p")     | catch /E739/ | endtry
try | call mkdir(&directory, "p")     | catch /E739/ | endtry
try | call mkdir(&undodir,   "p")     | catch /E739/ | endtry

if (&term =~ "^xterm")                " enable colors on any xterm
    let &t_Co=256
    let &t_AF="\e[38;5;%dm"
    let &t_AB="\e[48;5;%dm"
endif

" main config {{{1

if has('syntax')
    syntax enable                     " required for folding as well
    set hlsearch                      " highlight search results
endif
let g:python_highlight_builtin_funcs=1

if has('gui_running')
    set guioptions-=M                 " skip loading $VIMRUNTIME/menu.vim
    set guioptions-=m                 " hide menu which isn't loaded anyway
    set guioptions-=T                 " hide toolbar
    set guioptions-=r                 " hide scrollbar
    if has("gui_gtk2")
        set guifont=Consolas\ 11
    else
        set guifont=Consolas:h9
    end
    set columns=84
    set lines=36
    cd $HOME                          " might not be ideal...
endif

if has('title') | set title | endif   " terminal title
set history=8192                      " command lines to remember
set number                            " lines
set ruler                             " write out the cursor position
set showcmd                           " show number of lines/etc. selected
set lazyredraw                        " when executing macros, untyped things
set shortmess=atI                     " be less verbose and shut up vim
set suffixes=.bak,~,.swp,.o,.log,.out " lower tab-completion priority
set noerrorbells visualbell t_vb=     " disable bells
set scrolloff=3                       " row context during scrolling
set sidescrolloff=2                   " col context during scrolling
set incsearch                         " show first search result as we type
set ignorecase                        " insensitive searching
set smartcase                         " except when uppercase is used
set infercase                         " use existing case when ins-completing
set tabstop=8 shiftwidth=8 smarttab   " 8 space tabs
set virtualedit=block                 " allow cursor anywhere in visual block
set foldmethod=marker                 " (performance issues with other methods)
set foldlevelstart=99                 " start with everything unfolded...?
let c_syntax_for_h=1                  " use C highlighting for .h files
set nowrap                            " word wrapping is pretty weak in vim
set ffs=unix,dos                      " ffs indeed
set nobomb                            " bombs are bad ok
set undofile                          " remember undos across files/sessions
set diffopt+=iwhite                   " ignore whitespace in diff command
set ttimeoutlen=50                    " make changing modes a bit snappier
set hidden                            " allow swapping out of unsaved buffers
if has('mksession')
    set sessionoptions=blank,buffers,curdir,options,folds,tabpages,winsize,resize,winpos
end

if 0
    set autoindent                    " when creating newline, use same indent
    if has('smartindent')
        set smartindent               " automatic indents with a lot of stuff
    endif
endif " it's really just annoying though

if has('wildignore')
    " a bunch of stuff that may or may not do any good
    set wildignore=""
    set wildignore+=.git,.svn,.hg,pkg,tmp
    set wildignore+=*.bak,*.tmp,*.log,*.cache,
    set wildignore+=Desktop.ini,Thumbs.db,*.lnk,.DS_Store
    set wildignore+=*.zip,*.tar,*.tar.*,
    set wildignore+=*.suo,*.sln,*.pch,*.pdb,*.pgc,*.pgd
    set wildignore+=*.o,*.obj,*.elf,*.lib,*.a,*.dll,*.so,*.so.*,*.exe,*.out
    set wildignore+=*.png,*.jpg,*.jpeg,*.gif,*.pdf
    set wildignore+=__pycache__,*.pyc,*.pyo,*.pyd,*.npy,*.npz,*.pkl
    set wildignore+=*.gem,.bundle
    set wildignore+=CMake*,cmake_install.cmake,install_manifest.txt
    set wildignore+=*.h5,*.npz
endif

" autocmd {{{1

fu! SaveSession()
    let sf=g:rcvim.'/.session.vim'
    execute 'mksession! '.sf
endf

fu! LoadSession()
    let sf=g:rcvim.'/.session.vim'
    if filereadable(sf)
        execute 'so '.sf
    endif
endf

fu! KillSession()
    let sf=g:rcvim.'/.session.vim'
    call delete(sf)
endf

fu! TabEight()
    setlocal tabstop=8 shiftwidth=8 noexpandtab softtabstop=0
endf

fu! TabFour()
    setlocal tabstop=8 shiftwidth=4 expandtab softtabstop=4
endf

fu! TabTwo()
    setlocal tabstop=2 shiftwidth=2 expandtab
endf

" set TabFour as default
set tabstop=8 shiftwidth=4 expandtab softtabstop=4

if has('autocmd')
    augroup tabs
        au!
"       au BufRead,BufNewFile *.c,*.h,*.cpp,*.hpp,*.cc,*.hh call TabEight()
        au BufRead,BufNewFile PKGBUILD call TabTwo()
        au FileType ruby call TabTwo()
        au FileType nim call TabTwo()
        au BufRead,BufNewFile *.bt,*.1sc call TabFour()
        au FileType javascript,processing call TabTwo()
    augroup END

    augroup whatever
        au!
        au BufRead,BufNewFile *.lib setlocal ft=spice
        au BufRead,BufNewFile *.bt setlocal ft=c
        au BufRead,BufNewFile *.1sc setlocal ft=c
        au BufRead,BufNewFile *.asm setlocal ft=lips
        au BufRead,BufNewFile *.nim setlocal ft=nim
        au BufRead,BufNewFile *.pde setlocal ft=processing
    augroup END

    augroup nocomment
        au!
        au FileType * setlocal formatoptions-=c formatoptions-=r formatoptions-=o
    augroup END

    augroup sessions
        au!
        au VimEnter * call LoadSession()
    augroup END

    augroup nobells                   " good lord vim you are archaic
        au!
        au GUIEnter * set vb t_vb=
    augroup END

    augroup reload
        au!
"       au BufWritePost .vimrc,_vimrc,vimrc so $MYVIMRC
    augroup END

    fu! ResCur()                      " attempt to preserve cursor position
        if line("'\"") > 1 && line("'\"") <= line("$")
            normal! g`"
            return 1
        endif
    endf
    augroup resCur
        au!
        au BufWinEnter * call ResCur()
    augroup END
endif

" keys/binds {{{1

set backspace=eol,start,indent        " make backspace useful

" tab completion in command-line
if has('wildmenu') | set wildmenu | endif

" easy indent/unindent
nn <tab> >>
nn <s-tab> <<
" indentation without ending selection
vn <silent> <tab> >gv
vn <silent> <s-tab> <gv

" might make return useful
"nn <s-cr> J
"nn <c-cr> dd
" oh wait, terminals don't do that...

fu! Inn(q)
    " bind both normal and insert modes
    let args=split(a:q, '^\s*\(<[^>]\+>\s\+\)\+\zs')
    exec 'nn  '.args[0].'      '.args[1]
    exec 'ino '.args[0].' <c-o>'.args[1]
endf
com! -nargs=+ Inn call Inn(<q-args>)

Inn <F5>    :w<cr>
Inn <F8>    :e<cr>
Inn <F10>   :bd<cr>
Inn <c-F5>  :w!<cr>
Inn <c-F8>  :e!<cr>
Inn <c-F10> :bd!<cr>
Inn <s-F5>  :wall<cr>
"Inn <s-F8>  :tab ball<cr>
Inn <s-F10> :call KillSession()<cr>:qall<cr>
Inn <c-s-F10> :call KillSession()<cr>:qall!<cr>

" np++ habits
Inn <c-up> <c-y>
Inn <c-down> <c-e>
Inn <silent> <c-s-up> :m-2<cr>
Inn <silent> <c-s-down> :m+1<cr>
Inn <silent> <c-s-PageUp> :tabm -1<cr>
Inn <silent> <c-s-PageDown> :tabm +1<cr>

" hide search highlighting
Inn <silent> <c-]> :nohls<enter>

" rebind annoying things
" reflow text
nn Q gq
vn Q gq
" split lines (opposite of J)
nn K i<cr><esc>k$
vn K <nop>
" follow tag
nn <bar> <c-]>
" delete line
"nn D dd

" execute vim code in visual selection
vmap <space> "xy:@x<cr>

" this frees up x and X for use if you like
set <s-Del>=[3;2~
Inn <s-Del> X

" unfollow your leaders
let leader="\\"
" no-op
nn <Leader><Leader> :<cr>
"ino <c-\> <C-o><Leader>              " this doesn't workkkkkkkkk
nm <Leader>i i?<Esc>r
nm <Leader>a a?<Esc>r
nn <Leader>p "0p
nn <Leader>P "0P
nn <Leader>e :e **/*
nn <Leader>b :ls<cr>:b<space>
nn <Leader><F10> :call SaveSession()<cr>:xall<cr>
nn <silent> <Leader>d :cd %:p:h<cr>:pwd<cr>
nn <Leader>. @:
"nn <Leader>? :exec getline(".")
nn <Leader>, :Tab /,\zs<cr>
"nn <Leader>x :system('chmod +x %') | e

" via bit101
nn - :E<cr>
nn <Leader>f :E .<cr>
nn <Leader>F :E <c-r>=expand('%:h')<cr><cr>

" extension binds {{{1
map <silent> <c-n> :CtrlPBuffer<cr>

" messing around with colors
" a la https://github.com/xolox/vim-colorscheme-switcher/blob/master/autoload/xolox/colorscheme_switcher.vim
fu! HiDump()
    redir => out
    silent hi
    redir END
    let @a = out
    put a
endf

nn <Leader>s :call SyntaxAttr()<cr>
nn <Leader>1 :colo property16<cr>
nn <Leader>2 :colo Tomorrow-Night<cr>
nn <Leader>h :tabe<cr>:call HiDump()<cr>

" helper function to toggle hex mode
" http://vim.wikia.com/wiki/Improved_hex_editing
fu! ToggleHex()
    " hex mode should be considered a read-only operation
    " save values for modified and read-only for restoration later,
    " and clear the read-only flag for now
    let l:modified=&mod
    let l:oldreadonly=&readonly
    let &readonly=0
    let l:oldmodifiable=&modifiable
    let &modifiable=1
    if !exists("b:editHex") || !b:editHex
        " save old options
        let b:oldft=&ft
        let b:oldbin=&bin
        " set new options
        setlocal binary " make sure it overrides any textwidth, etc.
        silent :e " this will reload the file without trickeries
                  "(DOS line endings will be shown entirely )
        let &ft="xxd"
        " set status
        let b:editHex=1
        " switch to hex editor
        %!xxd
    else
        " restore old options
        let &ft=b:oldft
        if !b:oldbin
            setlocal nobinary
        endif
        " set status
        let b:editHex=0
        " return to normal editing
        %!xxd -r
    endif
    " restore values for modified and read only state
    let &mod=l:modified
    let &readonly=l:oldreadonly
    let &modifiable=l:oldmodifiable
endf

nn <F2> :call ToggleHex()<cr>

"%s# \(\*\|\*\*\|/\|//\) #\1#g

" misc {{{1

set list listchars=tab:»·,trail:·,extends:…,nbsp:‗
" including this in case i'm on a _really_ bad terminal:
"set list listchars=tab:>-,trail:.,extends:>,nbsp:_

try | execute pathogen#infect()       | catch /E117/ | endtry

let g:netrw_banner = 0

set background=dark
try
    colorscheme property16
catch /E185/
    colorscheme desert
endtry

" set up default windows on a big terminal
fu! DefaultWin()
    if &columns >= 84*2 && &lines >= 36*2
        "/vim\
        "| |_|
        "|.| |
        "\---/
        vsplit
        wincmd l
        split
        wincmd h
    endif
endf

augroup DefaultWin
    au!
    au VimEnter * call DefaultWin()
augroup END

" ctrlp {{{1

let g:ctrlp_match_window = 'bottom,order:btt,min:1,max:24,results:24'

" machine-specific configs {{{1

let s:hostname = hostname()
if s:hostname == "phantom-pi" || s:hostname == "wraith"
    colo Tomorrow-Night
endif