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Diffstat (limited to 'dotfiles/.vim/plugin/latexlivepreview.vim')
| -rw-r--r-- | dotfiles/.vim/plugin/latexlivepreview.vim | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/dotfiles/.vim/plugin/latexlivepreview.vim b/dotfiles/.vim/plugin/latexlivepreview.vim new file mode 100644 index 0000000..f4a315a --- /dev/null +++ b/dotfiles/.vim/plugin/latexlivepreview.vim @@ -0,0 +1,276 @@ +" 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 + +" Check mkdir feature +if (!exists("*mkdir")) + echohl ErrorMsg + echo 'vim-llp: mkdir required' + echohl None + finish +endif + +" Setup python +if (has('python3')) + let s:py_exe = 'python3' +elseif (has('python')) + let s:py_exe = 'python' +else + echohl ErrorMsg + echo 'vim-llp: python required' + echohl None + finish +endif + +let s:saved_cpo = &cpo +set cpo&vim + +let s:previewer = '' + +" Run a shell command in background +function! s:RunInBackground(cmd) + +execute s:py_exe "<< 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 + return + endif + + " Change directory to handle properly sourced files with \input and bib + " TODO: get rid of lcd + execute 'lcd ' . b:livepreview_buf_data['root_dir'] + + " Write the current buffer in a temporary file + silent exec 'write! ' . b:livepreview_buf_data['tmp_src_file'] + + call s:RunInBackground(b:livepreview_buf_data['run_cmd']) + + lcd - +endfunction + +function! s:StartPreview(...) + let b:livepreview_buf_data = {} + + let b:livepreview_buf_data['py_exe'] = s:py_exe + + " Create a temp directory for current buffer + execute s:py_exe "<< EEOOFF" +vim.command("let b:livepreview_buf_data['tmp_dir'] = '" + + tempfile.mkdtemp(prefix="vim-latex-live-preview-") + "'") +EEOOFF + + let b:livepreview_buf_data['tmp_src_file'] = + \ b:livepreview_buf_data['tmp_dir'] . + \ expand('%:p:r') + + " Guess the root file which will be compiled, using first the argument + " passed, then the first line declaration of the source file and + " eventually fallback to the current file. + " TODO: emulate -parse-first-line properly + let l:root_line = substitute(getline(1), + \ '\v^\s*\%\s*!tex\s*root\s*\=\s*(.*)\s*$', + \ '\1', '') + if (a:0 > 0) + let l:root_file = fnamemodify(a:1, ':p') + elseif (l:root_line != getline(1) && strlen(l:root_line) > 0) " TODO: existence of `% !TEX` declaration condition must be cleaned... + let l:root_file = fnamemodify(l:root_line, ':p') + else + let l:root_file = b:livepreview_buf_data['tmp_src_file'] + endif + + " Hack for complex project trees: recreate the tree in tmp_dir + " Build tree for tmp_src_file (copy of the current buffer) + let l:tmp_src_dir = fnamemodify(b:livepreview_buf_data['tmp_src_file'], ':p:h') + if (!isdirectory(l:tmp_src_dir)) + silent call mkdir(l:tmp_src_dir, 'p') + endif + " Build tree for root_file (main tex file, which might be tmp_src_file, + " ie. the current file) + if (l:root_file == b:livepreview_buf_data['tmp_src_file']) " if root file is the current file + let l:tmp_root_dir = l:tmp_src_dir + else + let l:tmp_root_dir = b:livepreview_buf_data['tmp_dir'] . fnamemodify(l:root_file, ':p:h') + if (!isdirectory(l:tmp_root_dir)) + silent call mkdir(l:tmp_root_dir, 'p') + endif + endif + + " Escape pathnames + let l:root_file = fnameescape(l:root_file) + let l:tmp_root_dir = fnameescape(l:tmp_root_dir) + let b:livepreview_buf_data['tmp_dir'] = fnameescape(b:livepreview_buf_data['tmp_dir']) + let b:livepreview_buf_data['tmp_src_file'] = fnameescape(b:livepreview_buf_data['tmp_src_file']) + + " Change directory to handle properly sourced files with \input and bib + " TODO: get rid of lcd + if (l:root_file == b:livepreview_buf_data['tmp_src_file']) " if root file is the current file + let b:livepreview_buf_data['root_dir'] = fnameescape(expand('%:p:h')) + else + let b:livepreview_buf_data['root_dir'] = fnamemodify(l:root_file, ':p:h') + endif + execute 'lcd ' . b:livepreview_buf_data['root_dir'] + + " Write the current buffer in a temporary file + silent exec 'write! ' . b:livepreview_buf_data['tmp_src_file'] + + let l:tmp_out_file = l:tmp_root_dir . '/' . + \ fnamemodify(l:root_file, ':t:r') . '.pdf' + + let b:livepreview_buf_data['run_cmd'] = + \ 'env ' . + \ 'TEXMFOUTPUT=' . l:tmp_root_dir . ' ' . + \ 'TEXINPUTS=' . l:tmp_root_dir + \ . ':' . b:livepreview_buf_data['root_dir'] + \ . ': ' . + \ s:engine . ' ' . + \ '-shell-escape ' . + \ '-interaction=nonstopmode ' . + \ '-output-directory=' . l:tmp_root_dir . ' ' . + \ l:root_file + " lcd can be avoided thanks to root_dir in TEXINPUTS + + silent call system(b:livepreview_buf_data['run_cmd']) + if v:shell_error != 0 + echo 'Failed to compile' + lcd - + return + endif + + " Enable compilation of bibliography: + let l:bib_files = split(glob(b:livepreview_buf_data['root_dir'] . '/**/*.bib')) " TODO: fails if unused bibfiles + if len(l:bib_files) > 0 + for bib_file in l:bib_files + let bib_fn = fnamemodify(bib_file, ':t') + call writefile(readfile(bib_file), + \ l:tmp_root_dir . '/' . bib_fn) " TODO: may fail if same bibfile names in different dirs + endfor + + " Update compile command with bibliography + let b:livepreview_buf_data['run_cmd'] = + \ 'env ' . + \ 'TEXMFOUTPUT=' . l:tmp_root_dir . ' ' . + \ 'TEXINPUTS=' . l:tmp_root_dir + \ . ':' . b:livepreview_buf_data['root_dir'] + \ . ': ' . + \ 'bibtex ' . l:tmp_root_dir . '/*.aux' . + \ ' && ' . + \ b:livepreview_buf_data['run_cmd'] + + silent call system(b:livepreview_buf_data['run_cmd']) + endif + if v:shell_error != 0 + echo 'Failed to compile bibliography' + lcd - + return + 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 + execute s:py_exe "<< 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 tex engine + if exists('g:livepreview_engine') + let s:engine = g:livepreview_engine + else + for possible_engine in ['pdflatex', 'xelatex'] + if executable(possible_engine) + let s:engine = possible_engine + break + endif + endfor + 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! -nargs=* LLPStartPreview call s:StartPreview(<f-args>) + +autocmd CursorHold,CursorHoldI,BufWritePost * 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 |