" netrw_gitignore#Hide: gitignore-based hiding
" Function returns a string of comma separated patterns convenient for
" assignment to `g:netrw_list_hide` option.
" Function can take additional filenames as arguments, example:
" netrw_gitignore#Hide('custom_gitignore1', 'custom_gitignore2')
"
" Usage examples:
" let g:netrw_list_hide = netrw_gitignore#Hide()
" let g:netrw_list_hide = netrw_gitignore#Hide() . 'more,hide,patterns'
"
" Copyright: Copyright (C) 2013 Bruno Sutic {{{1
" Permission is hereby granted to use and distribute this code,
" with or without modifications, provided that this copyright
" notice is copied with it. Like anything else that's free,
" netrw_gitignore.vim is provided *as is* and comes with no
" warranty of any kind, either expressed or implied. By using
" this plugin, you agree that in no event will the copyright
" holder be liable for any damages resulting from the use
" of this software.
function! netrw_gitignore#Hide(...)
let additional_files = a:000
let default_files = ['.gitignore', '.git/info/exclude']
" get existing global/system gitignore files
let global_gitignore = expand(substitute(system("git config --global core.excludesfile"), '\n', '', 'g'))
if global_gitignore !=# ''
let default_files = add(default_files, global_gitignore)
endif
let system_gitignore = expand(substitute(system("git config --system core.excludesfile"), '\n', '', 'g'))
if system_gitignore !=# ''
let default_files = add(default_files, system_gitignore)
endif
" append additional files if given as function arguments
if additional_files !=# []
let files = extend(default_files, additional_files)
else
let files = default_files
endif
" keep only existing/readable files
let gitignore_files = []
for file in files
if filereadable(file)
let gitignore_files = add(gitignore_files, file)
endif
endfor
" get contents of gitignore patterns from those files
let gitignore_lines = []
for file in gitignore_files
for line in readfile(file)
" filter empty lines and comments
if line !~# '^#' && line !~# '^$'
let gitignore_lines = add(gitignore_lines, line)
endif
endfor
endfor
" convert gitignore patterns to Netrw/Vim regex patterns
let escaped_lines = []
for line in gitignore_lines
let escaped = line
let escaped = substitute(escaped, '\*\*', '*', 'g')
let escaped = substitute(escaped, '\.', '\\.', 'g')
let escaped = substitute(escaped, '\$', '\\$', 'g')
let escaped = substitute(escaped, '*', '.*', 'g')
" correction: dot, dollar and asterisks chars shouldn't be escaped when
" within regex matching groups.
let escaped = substitute(escaped, '\(\[[^]]*\)\zs\\\.', '\.', 'g')
let escaped = substitute(escaped, '\(\[[^]]*\)\zs\\\$', '\$', 'g')
let escaped = substitute(escaped, '\(\[[^]]*\)\zs\.\*', '*', 'g')
let escaped_lines = add(escaped_lines, escaped)
endfor
return join(escaped_lines, ',')
endfunction
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