neovim configuration

" vim:foldmethod=marker:foldlevel=0

" vim-plug {{{
call plug#begin()

" color scheme
Plug 'chriskempson/base16-vim'

" syntax highlighting
Plug 'peterhoeg/vim-qml'
Plug 'artoj/qmake-syntax-vim'
Plug 'octol/vim-cpp-enhanced-highlight'
Plug 'rust-lang/rust.vim'
Plug 'tikhomirov/vim-glsl'

" auto complete
Plug 'Valloric/YouCompleteMe', { 'do': './install.py --clang-completer --racer-completer --omnisharp-completer --tern-completer' }
Plug 'rdnetto/YCM-Generator', { 'branch': 'stable' }
"Plug 'fatih/vim-go'
Plug 'nvie/vim-flake8'
Plug 'davidhalter/jedi-vim'
Plug 'ervandew/supertab'
Plug 'SirVer/ultisnips'
Plug 'honza/vim-snippets'

" navigation/search file
Plug 'scrooloose/nerdtree'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'rking/ag.vim'
Plug 'dkprice/vim-easygrep'

" note
Plug 'xolox/vim-misc'
Plug 'xolox/vim-notes'

" editing
Plug 'scrooloose/nerdcommenter'
Plug 'tpope/vim-surround'
Plug 'godlygeek/tabular'
Plug 'tpope/vim-repeat'

" better statusline
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'

" git management plugin
Plug 'tpope/vim-fugitive'
Plug 'airblade/vim-gitgutter'

call plug#end()
" }}} vim-plug

" Colors {{{
let $NVIM_TUI_ENABLE_TRUE_COLOR=1
syntax enable                " enable syntax processing
colorscheme base16-default
set background=dark
" }}} Colors

" Spaces & Tabs {{{
set tabstop=4       " number of visual spaces per TAB
set softtabstop=4   " number of spaces in tab when editing
set shiftwidth=4    " number of spaces to use for autoindent
set expandtab       " tabs are space
set autoindent
set copyindent      " copy indent from the previous line
" }}} Spaces & Tabs

" Clipboard {{{
set clipboard+=unnamedplus
" }}} Clipboard

" UI Config {{{
set hidden
set number                   " show line number
set showcmd                  " show command in bottom bar
set cursorline               " highlight current line
set wildmenu                 " visual autocomplete for command menu
set showmatch                " highlight matching brace
set laststatus=2             " window will always have a status line
set nobackup
set noswapfile
let &colorcolumn="80,".join(range(119,999),",")
" }}} UI Config

" Search {{{
set incsearch       " search as characters are entered
set hlsearch        " highlight matche
set ignorecase      " ignore case when searching
set smartcase       " ignore case if search pattern is lower case
                    " case-sensitive otherwise

" set Ag as the grep command
if executable('ag')
    " Note we extract the column as well as the file and line number
    set grepprg=ag\ --nogroup\ --nocolor\ --column
    set grepformat=%f:%l:%c%m
endif
" }}} Search

" Folding {{{
set foldenable
set foldlevelstart=10  " default folding level when buffer is opened
set foldnestmax=10     " maximum nested fold
set foldmethod=syntax  " fold based on indentation
" }}} Folding

" Leader & Mappings {{{
let mapleader=","   " leader is comma

" edit/reload vimrc
nmap <leader>ev :e $MYVIMRC<CR>
nmap <leader>sv :so $MYVIMRC<CR>

" better ESC
inoremap jj <esc>

" fast save and close
nmap <leader>w :w<CR>
nmap <leader>x :x<CR>
nmap <leader>q :q<CR>

" insert blank line before current line without leaving insert mode
imap <leader>o <c-o><s-o>

" move up/down consider wrapped lines
nnoremap j gj
nnoremap k gk

" fix indentation
nnoremap <leader>i mzgg=G`z<CR>

" turn off search highlights
nnoremap <leader><space> :nohlsearch<CR>

" move through grep results
nmap <silent> <right> :cnext<CR>
nmap <silent> <left> :cprev<CR>

" buffers
nnoremap <tab> :bn<CR>
nnoremap <s-tab> :bp<CR>
nnoremap <leader>bd :bd<CR>

" split navigation
nnoremap <c-j> <c-w><c-j>
nnoremap <c-k> <c-w><c-k>
nnoremap <c-l> <c-w><c-l>
nnoremap <c-h> <c-w><c-h>

" fast header source switch
map <F4> :e %:p:s,.h$,.X123X,:s,.cpp$,.h,:s,.X123X$,.cpp,<CR>

" fzf
nnoremap <c-p> :FZF<CR>

" NERDTree mappings {{{
map <C-n> :NERDTreeToggle<CR>
" }}}

" YCM mappings {{{
nnoremap <leader>g :YcmCompleter GoTo<CR>
" }}}

" }}}

" NERDTree {{{
let NERDTreeShowHidden=1
let NERDTreeIgnore = ['\.pyc$', '__pycache__']
" }}}

" Cpp Enhanced Highlighting {{{
let g:cpp_class_scope_highlight = 1
" }}}

" Airline {{{
let g:airline_powerline_fonts = 1
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#buffer_nr_show = 1
" }}}

" YCM {{{
"let g:ycm_server_keep_logfiles = 1
"let g:ycm_server_log_level = 'debug'
let g:ycm_filetype_specific_completion_to_disable = {
    \ 'gitcommit': 1,
    \ 'python': 1
    \}
let g:ycm_rust_src_path='/home/synasius/workspace/rust/src/'
let g:ycm_complete_in_comments = 1
let g:ycm_complete_in_strings = 1
let g:ycm_use_ultisnips_completer = 1 " Default 1, just ensure
let g:ycm_seed_identifiers_with_syntax = 1 " Completion for programming language's

" }}}

" UltiSnips {{{
let g:UltiSnipsExpandTrigger       = "<c-j>"
let g:UltiSnipsJumpForwardTrigger  = "<c-j>"
let g:UltiSnipsJumpBackwardTrigger = "<c-p>"
let g:UltiSnipsListSnippets        = "<c-k>" "List possible snippets based on current file
let g:UltiSnipsUsePythonVersion = 2
" }}}

" Flake8 {{{
let g:flake8_show_in_gutter=1
let g:flake8_show_in_file=1
" }}}

" Functions {{{
" trailing whitespace
match ErrorMsg '\s\+$'
function! TrimWhiteSpace()
    %s/\s\+$//e
endfunction
autocmd BufWritePre * :call TrimWhiteSpace()
" }}}