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" Copyright (C) 2012 Hong Xu
" This file is part of vim-live-preview.
" vim-live-preview is free software: you can redistribute it and/or modify it
" under the terms of the GNU General Public License as published by the Free
" Software Foundation, either version 3 of the License, or (at your option)
" any later version.
" vim-live-preview is distributed in the hope that it will be useful, but
" WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
" or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
" more details.
" You should have received a copy of the GNU General Public License along with
" vim-live-preview. If not, see <http://www.gnu.org/licenses/>.
if v:version < 700
finish
endif
" check whether this script is already loaded
if exists("g:loaded_vim_live_preview")
finish
endif
let g:loaded_vim_live_preview = 1
" this plugin requires +python feature
if !has('python')
finish
endif
let s:saved_cpo = &cpo
set cpo&vim
let s:previewer = ''
" Run a shell command in background
function! s:RunInBackground(cmd)
python << EEOOFF
try:
subprocess.Popen(
vim.eval('a:cmd'),
shell = True,
universal_newlines = True,
stdout=open(os.devnull, 'w'), stderr=subprocess.STDOUT)
except:
pass
EEOOFF
endfunction
function! s:Compile()
if !exists('b:livepreview_buf_data') ||
\ has_key(b:livepreview_buf_data, 'preview_running') == 0 ||
\ b:livepreview_buf_data['preview_running'] == 0
return
endif
lcd %:p:h
silent exec 'write! ' . b:livepreview_buf_data['tmp_src_file']
call s:RunInBackground(
\ 'pdflatex -shell-escape -interaction=nonstopmode -output-directory=' .
\ b:livepreview_buf_data['tmp_dir'] . ' ' .
\ b:livepreview_buf_data['tmp_src_file'])
if b:livepreview_buf_data['has_bibliography']
" ToDo: Make the following work in Windows
call system('cd ' . b:livepreview_buf_data['tmp_dir'] .
\ ' && bibtex *.aux')
endif
lcd -
endfunction
function! s:StartPreview()
lcd %:p:h
let b:livepreview_buf_data = {}
" Create a temp directory for current buffer
python << EEOOFF
vim.command("let b:livepreview_buf_data['tmp_dir'] = '" +
tempfile.mkdtemp() + "'")
EEOOFF
let b:livepreview_buf_data['tmp_src_file'] =
\ b:livepreview_buf_data['tmp_dir'] . '/' .
\ fnameescape(expand('%:r')) . '.' . expand('%:e')
silent exec 'write! ' . b:livepreview_buf_data['tmp_src_file']
let l:tmp_out_file = b:livepreview_buf_data['tmp_dir'] . '/' .
\ fnameescape(expand('%:r')) . '.pdf'
silent call system('pdflatex -shell-escape -interaction=nonstopmode -output-directory=' .
\ b:livepreview_buf_data['tmp_dir'] . ' ' .
\ b:livepreview_buf_data['tmp_src_file'])
if v:shell_error != 0
echo 'Failed to compile'
endif
" Enable compilation of bibliography:
let l:bib_files = split( glob( expand( '%:h' ) . '/**/*bib' ) )
let b:livepreview_buf_data['has_bibliography'] = 0
if len( l:bib_files ) > 0
let b:livepreview_buf_data['has_bibliography'] = 1
for bib_file in l:bib_files
let bib_fn = fnamemodify(bib_file, ':t')
call writefile(readfile(bib_file),
\ b:livepreview_buf_data['tmp_dir'] . '/' . bib_fn )
endfor
" ToDo: Make the following work in Windows
silent call system('cd ' . b:livepreview_buf_data['tmp_dir'] .
\ ' && bibtex *.aux')
" Bibtex requires multiple latex compilations:
silent call system(
\ 'pdflatex -shell-escape -interaction=nonstopmode -output-directory=' .
\ b:livepreview_buf_data['tmp_dir'] . ' ' .
\ b:livepreview_buf_data['tmp_src_file'])
endif
if v:shell_error != 0
echo 'Failed to compile bibliography'
endif
call s:RunInBackground(s:previewer . ' ' . l:tmp_out_file)
lcd -
let b:livepreview_buf_data['preview_running'] = 1
endfunction
" Initialization code
function! s:Initialize()
let l:ret = 0
python << EEOOFF
try:
import vim
import tempfile
import subprocess
import os
except:
vim.command('let l:ret = 1')
EEOOFF
if l:ret != 0
return 'Python initialization failed.'
endif
" Get the previewer
if exists('g:livepreview_previewer')
let s:previewer = g:livepreview_previewer
else
for possible_previewer in [
\ 'evince',
\ 'okular']
if executable(possible_previewer)
let s:previewer = possible_previewer
break
endif
endfor
endif
return 0
endfunction
let s:init_msg = s:Initialize()
if type(s:init_msg) == type('')
echohl ErrorMsg
echo 'vim-live-preview: ' . s:init_msg
echohl None
endif
unlet! s:init_msg
command! LLPStartPreview call s:StartPreview()
autocmd CursorHold,CursorHoldI,BufWritePost *.tex call s:Compile()
let &cpo = s:saved_cpo
unlet! s:saved_cpo
" vim703: cc=80
" vim:fdm=marker et ts=4 tw=78 sw=4
|
