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Improved code for s:get_main()

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This commit is contained in:
Karl Yngve Lervåg 2016-01-13 23:31:59 +01:00
parent 39d06eec48
commit a0e116efdb
1 changed files with 46 additions and 38 deletions
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84
autoload/vimtex.vim
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@ -427,52 +427,38 @@ function! s:get_main() " {{{1
endif
"
" Search for main file specifier at the beginning of file. Recognized
" specifiers are:
" Search for TEX root specifier at the beginning of file. This is used by
" several other plugins and editors.
"
" 1. The TEX root specifier, which is used by by several other plugins and
" editors.
" 2. Subfiles package specifier. This parses the main tex file option in the
" \documentclass line for the subfiles package.
let l:candidate = s:get_main_from_specifier(
\ '^\c\s*%\s*!\?\s*tex\s\+root\s*=\s*\zs.*\ze\s*$')
if l:candidate !=# ''
return l:candidate
endif
"
for regexp in [
\ '^\c\s*%\s*!\?\s*tex\s\+root\s*=\s*\zs.*\ze\s*$',
\ '^\C\s*\\documentclass\[\zs.*\ze\]{subfiles}',
\ ]
for line in getline(1, 5)
let filename = matchstr(line, regexp)
if len(filename) > 0
if filename[0] !=# '/'
let candidates = [
\ expand('%:h') . '/' . filename,
\ getcwd() . '/' . filename,
\ ]
else
let candidates = [fnamemodify(filename, ':p')]
endif
for main in candidates
if filereadable(main)
return main
endif
endfor
endif
endfor
endfor
" Support for subfiles package
"
let l:candidate = s:get_main_from_specifier(
\ '^\C\s*\\documentclass\[\zs.*\ze\]{subfiles}')
if l:candidate !=# ''
return l:candidate
endif
"
" Search for .latexmain-specifier
"
let main = s:get_main_latexmain(expand('%:p'))
if filereadable(main)
return main
let l:candidate = s:get_main_latexmain(expand('%:p'))
if l:candidate !=# ''
return l:candidate
endif
"
" Search for main file recursively through include specifiers
"
let main = s:get_main_recurse(expand('%:p'))
if filereadable(main)
return main
let l:candidate = s:get_main_recurse(expand('%:p'))
if l:candidate !=# ''
return l:candidate
endif
"
@ -481,9 +467,30 @@ function! s:get_main() " {{{1
return expand('%:p')
endfunction
" }}}1
function! s:get_main_from_specifier(spec) " {{{1
for l:line in getline(1, 5)
let l:filename = matchstr(l:line, a:spec)
if len(l:filename) > 0
if l:filename[0] ==# '/'
if filereadable(l:filename) | return l:filename | endif
else
for l:candidate in [
\ expand('%:p:h') . '/' . l:filename,
\ getcwd() . '/' . l:filename
\]
if filereadable(l:candidate) | return l:candidate | endif
endfor
endif
endif
endfor
return ''
endfunction
" }}}1
function! s:get_main_latexmain(file) " {{{1
if !filereadable(a:file) | return | endif
if !filereadable(a:file) | return '' | endif
"
" Gather candidate files
@ -501,12 +508,13 @@ function! s:get_main_latexmain(file) " {{{1
" closest to the current file in the directory tree)
"
if len(l:candidates) > 0
return fnamemodify(l:candidates[0], ':p:r')
let l:candidate = fnamemodify(l:candidates[0], ':p:r')
return filereadable(l:candidate) ? l:candidate : ''
endif
endfunction
function! s:get_main_recurse(file) " {{{1
if !filereadable(a:file) | return | endif
if !filereadable(a:file) | return '' | endif
"
" Check if current file is a main file