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ultimate-vim/sources_non_forked/ale/autoload/ale/path.vim
2022-05-19 21:16:38 +08:00

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VimL

" Author: w0rp <devw0rp@gmail.com>
" Description: Functions for working with paths in the filesystem.
" simplify a path, and fix annoying issues with paths on Windows.
"
" Forward slashes are changed to back slashes so path equality works better
" on Windows. Back slashes are changed to forward slashes on Unix.
"
" Unix paths can technically contain back slashes, but in practice no path
" should, and replacing back slashes with forward slashes makes linters work
" in environments like MSYS.
"
" Paths starting with more than one forward slash are changed to only one
" forward slash, to prevent the paths being treated as special MSYS paths.
function! ale#path#Simplify(path) abort
if has('unix')
let l:unix_path = substitute(a:path, '\\', '/', 'g')
return substitute(simplify(l:unix_path), '^//\+', '/', 'g') " no-custom-checks
endif
let l:win_path = substitute(a:path, '/', '\\', 'g')
return substitute(simplify(l:win_path), '^\\\+', '\', 'g') " no-custom-checks
endfunction
" Simplify a path without a Windows drive letter.
" This function can be used for checking if paths are equal.
function! ale#path#RemoveDriveLetter(path) abort
return has('win32') && a:path[1:2] is# ':\'
\ ? ale#path#Simplify(a:path[2:])
\ : ale#path#Simplify(a:path)
endfunction
" Given a buffer and a filename, find the nearest file by searching upwards
" through the paths relative to the given buffer.
function! ale#path#FindNearestFile(buffer, filename) abort
let l:buffer_filename = fnamemodify(bufname(a:buffer), ':p')
let l:buffer_filename = fnameescape(l:buffer_filename)
let l:relative_path = findfile(a:filename, l:buffer_filename . ';')
if !empty(l:relative_path)
return fnamemodify(l:relative_path, ':p')
endif
return ''
endfunction
" Given a buffer and a directory name, find the nearest directory by searching upwards
" through the paths relative to the given buffer.
function! ale#path#FindNearestDirectory(buffer, directory_name) abort
let l:buffer_filename = fnamemodify(bufname(a:buffer), ':p')
let l:buffer_filename = fnameescape(l:buffer_filename)
let l:relative_path = finddir(a:directory_name, l:buffer_filename . ';')
if !empty(l:relative_path)
return fnamemodify(l:relative_path, ':p')
endif
return ''
endfunction
" Given a buffer, a string to search for, and a global fallback for when
" the search fails, look for a file in parent paths, and if that fails,
" use the global fallback path instead.
function! ale#path#ResolveLocalPath(buffer, search_string, global_fallback) abort
" Search for a locally installed file first.
let l:path = ale#path#FindNearestFile(a:buffer, a:search_string)
" If the search fails, try the global executable instead.
if empty(l:path)
let l:path = a:global_fallback
endif
return l:path
endfunction
" Given a buffer number, a base variable name, and a list of paths to search
" for in ancestor directories, detect the executable path for a program.
function! ale#path#FindNearestExecutable(buffer, path_list) abort
for l:path in a:path_list
if ale#path#IsAbsolute(l:path)
let l:executable = filereadable(l:path) ? l:path : ''
else
let l:executable = ale#path#FindNearestFile(a:buffer, l:path)
endif
if !empty(l:executable)
return l:executable
endif
endfor
return ''
endfunction
" Given a buffer number, a base variable name, and a list of paths to search
" for in ancestor directories, detect the executable path for a program.
"
" The use_global and executable options for the relevant program will be used.
function! ale#path#FindExecutable(buffer, base_var_name, path_list) abort
if ale#Var(a:buffer, a:base_var_name . '_use_global')
return ale#Var(a:buffer, a:base_var_name . '_executable')
endif
let l:nearest = ale#path#FindNearestExecutable(a:buffer, a:path_list)
if !empty(l:nearest)
return l:nearest
endif
return ale#Var(a:buffer, a:base_var_name . '_executable')
endfunction
" Return 1 if a path is an absolute path.
function! ale#path#IsAbsolute(filename) abort
if has('win32') && a:filename[:0] is# '\'
return 1
endif
" Check for /foo and C:\foo, etc.
return a:filename[:0] is# '/' || a:filename[1:2] is# ':\'
endfunction
let s:temp_dir = ale#path#Simplify(fnamemodify(ale#util#Tempname(), ':h:h'))
" Given a filename, return 1 if the file represents some temporary file
" created by Vim.
function! ale#path#IsTempName(filename) abort
return ale#path#Simplify(a:filename)[:len(s:temp_dir) - 1] is# s:temp_dir
endfunction
" Given a base directory, which must not have a trailing slash, and a
" filename, which may have an absolute path a path relative to the base
" directory, return the absolute path to the file.
function! ale#path#GetAbsPath(base_directory, filename) abort
if ale#path#IsAbsolute(a:filename)
return ale#path#Simplify(a:filename)
endif
let l:sep = has('win32') ? '\' : '/'
return ale#path#Simplify(a:base_directory . l:sep . a:filename)
endfunction
" Given a path, return the directory name for that path, with no trailing
" slashes. If the argument is empty(), return an empty string.
function! ale#path#Dirname(path) abort
if empty(a:path)
return ''
endif
" For /foo/bar/ we need :h:h to get /foo
if a:path[-1:] is# '/' || (has('win32') && a:path[-1:] is# '\')
return fnamemodify(a:path, ':h:h')
endif
return fnamemodify(a:path, ':h')
endfunction
" Given a buffer number and a relative or absolute path, return 1 if the
" two paths represent the same file on disk.
function! ale#path#IsBufferPath(buffer, complex_filename) abort
" If the path is one of many different names for stdin, we have a match.
if a:complex_filename is# '-'
\|| a:complex_filename is# 'stdin'
\|| a:complex_filename[:0] is# '<'
return 1
endif
let l:test_filename = ale#path#Simplify(a:complex_filename)
if l:test_filename[:1] is# './'
let l:test_filename = l:test_filename[2:]
endif
if l:test_filename[:1] is# '..'
" Remove ../../ etc. from the front of the path.
let l:test_filename = substitute(l:test_filename, '\v^(\.\.[/\\])+', '/', '')
endif
" Use the basename for temporary files, as they are likely our files.
if ale#path#IsTempName(l:test_filename)
let l:test_filename = fnamemodify(l:test_filename, ':t')
endif
let l:buffer_filename = expand('#' . a:buffer . ':p')
return l:buffer_filename is# l:test_filename
\ || l:buffer_filename[-len(l:test_filename):] is# l:test_filename
endfunction
" Given a path, return every component of the path, moving upwards.
function! ale#path#Upwards(path) abort
let l:pattern = has('win32') ? '\v/+|\\+' : '\v/+'
let l:sep = has('win32') ? '\' : '/'
let l:parts = split(ale#path#Simplify(a:path), l:pattern)
let l:path_list = []
while !empty(l:parts)
call add(l:path_list, join(l:parts, l:sep))
let l:parts = l:parts[:-2]
endwhile
if has('win32') && a:path =~# '^[a-zA-z]:\'
" Add \ to C: for C:\, etc.
let l:path_list[-1] .= '\'
elseif a:path[0] is# '/'
" If the path starts with /, even on Windows, add / and / to all paths.
call map(l:path_list, '''/'' . v:val')
call add(l:path_list, '/')
endif
return l:path_list
endfunction
" Convert a filesystem path to a file:// URI
" relatives paths will not be prefixed with the protocol.
" For Windows paths, the `:` in C:\ etc. will not be percent-encoded.
function! ale#path#ToFileURI(path) abort
let l:has_drive_letter = a:path[1:2] is# ':\'
return substitute(
\ ((l:has_drive_letter || a:path[:0] is# '/') ? 'file://' : '')
\ . (l:has_drive_letter ? '/' . a:path[:2] : '')
\ . ale#uri#Encode(l:has_drive_letter ? a:path[3:] : a:path),
\ '\\',
\ '/',
\ 'g',
\)
endfunction
function! ale#path#FromFileURI(uri) abort
if a:uri[:6] is? 'file://'
let l:encoded_path = a:uri[7:]
elseif a:uri[:4] is? 'file:'
let l:encoded_path = a:uri[5:]
else
let l:encoded_path = a:uri
endif
let l:path = ale#uri#Decode(l:encoded_path)
" If the path is like /C:/foo/bar, it should be C:\foo\bar instead.
if has('win32') && l:path =~# '^/[a-zA-Z][:|]'
let l:path = substitute(l:path[1:], '/', '\\', 'g')
let l:path = l:path[0] . ':' . l:path[2:]
endif
return l:path
endfunction