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let s:version_cache = {}
" Reset the version cache used for parsing the version.
function! ale#semver#ResetVersionCache() abort
let s:version_cache = {}
endfunction
function! ale#semver#ParseVersion(version_lines) abort
for l:line in a:version_lines
let l:match = matchlist(l:line, '\v(\d+)\.(\d+)(\.(\d+))?')
if !empty(l:match)
return [l:match[1] + 0, l:match[2] + 0, l:match[4] + 0]
endif
endfor
return []
endfunction
" Given an executable name and some lines of output, which can be empty,
" parse the version from the lines of output, or return the cached version
" triple [major, minor, patch]
"
" If the version cannot be found, an empty List will be returned instead.
function! s:GetVersion(executable, version_lines) abort
let l:version = get(s:version_cache, a:executable, [])
let l:parsed_version = ale#semver#ParseVersion(a:version_lines)
if !empty(l:parsed_version)
let l:version = l:parsed_version
let s:version_cache[a:executable] = l:version
endif
return l:version
endfunction
function! ale#semver#RunWithVersionCheck(buffer, executable, command, Callback) abort
if empty(a:executable)
return ''
endif
let l:cache = s:version_cache
if has_key(s:version_cache, a:executable)
return a:Callback(a:buffer, s:version_cache[a:executable])
endif
return ale#command#Run(
\ a:buffer,
\ a:command,
\ {_, output -> a:Callback(a:buffer, s:GetVersion(a:executable, output))},
\ {'output_stream': 'both', 'executable': a:executable}
\)
endfunction
" Given two triples of integers [major, minor, patch], compare the triples
" and return 1 if the LHS is greater than or equal to the RHS.
"
" Pairs of [major, minor] can also be used for either argument.
"
" 0 will be returned if the LHS is an empty List.
function! ale#semver#GTE(lhs, rhs) abort
if empty(a:lhs)
return 0
endif
if a:lhs[0] > a:rhs[0]
return 1
elseif a:lhs[0] == a:rhs[0]
if a:lhs[1] > a:rhs[1]
return 1
elseif a:lhs[1] == a:rhs[1]
return get(a:lhs, 2) >= get(a:rhs, 2)
endif
endif
return 0
endfunction
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