maps.vim

" With a map leader it's possible to do extra key combinations
" like <leader>w saves the current file
let mapleader = ","
let g:mapleader = ","

"quick complie
noremap <leader>rp :!python %<cr>
noremap <leader>rc :!gcc % -o a.out;./a.out;rm a.out<cr>
noremap <leader>re :!erl<cr>


" Fast saving
noremap <leader>s :w!<cr>
inoremap <leader>s <esc>:w!<cr>a

"visual all text
noremap <leader>a ggVG

"Esc key map
inoremap jj <esc>

"use system clipboard
noremap <leader>y "+y
noremap <leader>v "+p


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" => Buffer mappings
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nmap <leader>d :bd<cr>
nnoremap <tab> :bn<cr>
nnoremap <s-tab> :bp<cr>

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" => Visual mode related
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" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :call VisualSelection('f')<CR>
vnoremap <silent> # :call VisualSelection('b')<CR>

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" => Moving around, tabs, windows and buffers
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" Treat long lines as break lines (useful when moving around in them)
map j gj
map k gk
nnoremap Y y$

" Remap VIM 0 to first non-blank character
map 0 ^

" some emacs maping
inoremap <c-e> <esc>A 
inoremap <c-k> <esc>lDa

"When move around keep cursor center fo the screen
nnoremap H Hzz
nnoremap L Lzz
nnoremap } }zz
nnoremap { {zz
nnoremap n nzz
nnoremap N Nzz
nnoremap <c-d> <c-d>zz
nnoremap <c-u> <c-u>zz


" Disable highlight when <leader><cr> is pressed
map <silent> <leader><cr> :noh<cr>

" Smart way to move between windows
map <C-j> <C-W>j
map <C-k> <C-W>k
map <C-h> <C-W>h
map <C-l> <C-W>l

" Opens a new tab with the current buffer's path
" Super useful when editing files in the same directory
map <leader>te :tabedit <c-r>=expand("%:p:h")<cr>/

" Switch CWD to the directory of the open buffer
map <leader>cd :cd %:p:h<cr>:pwd<cr>

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" => vimgrep searching and cope displaying
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" When you press gv you vimgrep after the selected text
vnoremap <silent> gv :call VisualSelection('gv')<CR>

" Open vimgrep and put the cursor in the right position
map <leader>g :vimgrep // **/*.<left><left><left><left><left><left><left>

" Vimgreps in the current file
map <leader><space> :vimgrep // <C-R>%<C-A><right><right><right><right><right><right><right><right><right>

" When you press <leader>r you can search and replace the selected text
vnoremap <silent> <leader>r :call VisualSelection('replace')<CR>

" Do :help cope if you are unsure what cope is. It's super useful!
"
" When you search with vimgrep, display your results in cope by doing:
"   <leader>cc
"
" To go to the next search result do:
"   <leader>n
"
" To go to the previous search results do:
"   <leader>p
"
map <leader>cc :botright cope<cr>
map <leader>co ggVGy:tabnew<cr>:set syntax=qf<cr>pgg
map <leader>n :cn<cr>
map <leader>p :cp<cr>


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" => Spell checking
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" Pressing ,ss will toggle and untoggle spell checking
map <leader>ss :setlocal spell!<cr>

" Shortcuts using <leader>
map <leader>sn ]s
map <leader>sp [s
map <leader>sa zg
map <leader>s? z=


" command mode indent
cnoremap <C-a> <Home>
cnoremap <C-e> <End>



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" => Misc
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" Remove the Windows ^M - when the encodings gets messed up
noremap <Leader>m mmHmt:%s/<C-V><cr>//ge<cr>'tzt'm

" Quick quit
map <leader>q :q!<cr>
map <leader>qa :qa!<cr>

" Allow saving of files as sudo when I forgot to start vim using sudo.
cmap w!! w !sudo tee > /dev/null %

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" => Helper functions
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function! CmdLine(str)
    exe "menu Foo.Bar :" . a:str
    emenu Foo.Bar
    unmenu Foo
endfunction

function! VisualSelection(direction) range
    let l:saved_reg = @"
    execute "normal! vgvy"

    let l:pattern = escape(@", '\\/.*$^~[]')
    let l:pattern = substitute(l:pattern, "\n$", "", "")

    if a:direction == 'b'
        execute "normal ?" . l:pattern . "^M"
    elseif a:direction == 'gv'
        call CmdLine("vimgrep " . '/'. l:pattern . '/' . ' **/*.')
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    elseif a:direction == 'f'
        execute "normal /" . l:pattern . "^M"
    endif

    let @/ = l:pattern
    let @" = l:saved_reg
endfunction