" Pymode core functions

" DESC: Check variable and set default value if it not exists
fun! pymode#default(name, default) "{{{
 if !exists(a:name)
 let {a:name} = a:default
 return 0
 endif
 return 1
endfunction "}}}

" DESC: Import python libs
fun! pymode#init(plugin_root, paths) "{{{

 PymodePython import sys, vim
 PymodePython sys.path.insert(0, vim.eval('a:plugin_root'))
 PymodePython sys.path = vim.eval('a:paths') + sys.path

endfunction "}}}

" DESC: Show wide message
fun! pymode#wide_message(msg) "{{{
 let x=&ruler | let y=&showcmd
 set noruler noshowcmd
 redraw
 echohl Debug | echo strpart("[Pymode] " . a:msg, 0, &columns-1) | echohl none
 let &ruler=x | let &showcmd=y
endfunction "}}}

" DESC: Show error
fun! pymode#error(msg) "{{{
 execute "normal \<Esc>"
 echohl ErrorMsg
 echomsg "[Pymode]: error: " . a:msg
 echohl None
endfunction "}}}

" DESC: Open quickfix window
fun! pymode#quickfix_open(onlyRecognized, maxHeight, minHeight, jumpError) "{{{
 let numErrors = len(filter(getqflist(), 'v:val.valid'))
 let numOthers = len(getqflist()) - numErrors
 if numErrors > 0 || (!a:onlyRecognized && numOthers > 0)
 let num = winnr()
 botright copen
 exe max([min([line("$"), a:maxHeight]), a:minHeight]) . "wincmd _"
 if a:jumpError
 cc
 elseif num != winnr()
 wincmd p
 endif
 else
 cclose
 endif
 redraw
 if numOthers > 0
 call pymode#wide_message(printf('Quickfix: %d(+%d)', numErrors, numOthers))
 elseif numErrors > 0
 call pymode#wide_message(printf('Quickfix: %d', numErrors))
 endif
endfunction "}}}

" DESC: Open temp buffer.
fun! pymode#tempbuffer_open(name) "{{{
 pclose
 exe g:pymode_preview_position . " " . g:pymode_preview_height . "new " . a:name
 setlocal buftype=nofile bufhidden=delete noswapfile nowrap previewwindow
 redraw
endfunction "}}}

" DESC: Remove unused whitespaces
fun! pymode#trim_whitespaces() "{{{
 if g:pymode_trim_whitespaces
 let cursor_pos = getpos('.')
 silent! %s/\s\+$//e
 call setpos('.', cursor_pos)
 endif
endfunction "}}}

fun! pymode#save() "{{{
 if &modifiable && &modified
 try
 noautocmd write
 catch /E212/
 call pymode#error("File modified and I can't save it. Please save it manually.")
 return 0
 endtry
 endif
 return expand('%') != ''
endfunction "}}}

fun! pymode#reload_buf_by_nr(nr) "{{{
 let cur = bufnr("")
 try
 exe "buffer " . a:nr
 catch /E86/
 return
 endtry
 exe "e!"
 exe "buffer " . cur
endfunction "}}}

fun! pymode#buffer_pre_write() "{{{
 let b:pymode_modified = &modified
endfunction "}}}

fun! pymode#buffer_post_write() "{{{
 if g:pymode_rope
 if g:pymode_rope_regenerate_on_write && b:pymode_modified
 call pymode#debug('regenerate')
 call pymode#rope#regenerate()
 endif
 endif
 if g:pymode_lint
 if g:pymode_lint_unmodified || (g:pymode_lint_on_write && b:pymode_modified)
 call pymode#debug('check code')
 call pymode#lint#check()
 endif
 endif
endfunction "}}}

fun! pymode#debug(msg) "{{{
 " Pymode's debug function.
 " Should be called by other pymode's functions to report outputs. See
 " the function PymodeDebugFolding for example.
 " TODO: why echom here creates a problem?
 " echom '' . a:msg + '|||||||||||'

 let l:info_separator = repeat('-', 79)

 if g:pymode_debug
 if ! exists('g:pymode_debug_counter')
 let g:pymode_debug_counter = 0
 endif
 let g:pymode_debug_counter += 1
 " NOTE: Print a separator for every message except folding ones (since
 " they could be many).
 if a:msg !~ 'has folding:'
 echom l:info_separator
 endif
 echom '' . 'pymode debug msg ' . g:pymode_debug_counter . ': ' . a:msg
 endif
endfunction "}}}

fun! pymode#quit() "{{{
 augroup pymode
 au! * <buffer>
 augroup END
endfunction "}}}