#711 - Make the cpplint executable configurable

ale_linters/cpp/cpplint.vim

@@ -1,18 +1,25 @@
 " Author: Dawid Kurek https://github.com/dawikur
 " Description: cpplint for cpp files
 
-if !exists('g:ale_cpp_cpplint_options')
-    let g:ale_cpp_cpplint_options = ''
-endif
+call ale#Set('cpp_cpplint_executable', 'cpplint')
+call ale#Set('cpp_cpplint_options', '')
+
+function! ale_linters#cpp#cpplint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_cpplint_executable')
+endfunction
 
 function! ale_linters#cpp#cpplint#GetCommand(buffer) abort
-    return 'cpplint ' . ale#Var(a:buffer, 'cpp_cpplint_options') . ' %s'
+    let l:options = ale#Var(a:buffer, 'cpp_cpplint_options')
+
+    return ale#Escape(ale_linters#cpp#cpplint#GetExecutable(a:buffer))
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %s'
 endfunction
 
 call ale#linter#Define('cpp', {
 \   'name': 'cpplint',
 \   'output_stream': 'stderr',
-\   'executable': 'cpplint',
+\   'executable_callback': 'ale_linters#cpp#cpplint#GetExecutable',
 \   'command_callback': 'ale_linters#cpp#cpplint#GetCommand',
 \   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
 \   'lint_file': 1,

doc/ale-cpp.txt

@@ -154,6 +154,14 @@ g:ale_cpp_cppcheck_options                         *g:ale_cpp_cppcheck_options*
 ===============================================================================
 cpplint                                                       *ale-cpp-cpplint*
 
+g:ale_cpp_cpplint_executable                     *g:ale_cpp_cpplint_executable*
+                                                 *b:ale_cpp_cpplint_executable*
+  Type: |String|
+  Default: `'cpplint'`
+
+  This variable can be changed to use a different executable for cpplint.
+
+
 g:ale_cpp_cpplint_options                           *g:ale_cpp_cpplint_options*
                                                     *b:ale_cpp_cpplint_options*
   Type: |String|

test/command_callback/test_cpplint_command_callbacks.vader

@@ -0,0 +1,42 @@
+Before:
+  Save g:ale_cpp_cpplint_executable
+  Save g:ale_cpp_cpplint_options
+
+  unlet! g:ale_cpp_cpplint_executable
+  unlet! b:ale_cpp_cpplint_executable
+  unlet! g:ale_cpp_cpplint_options
+  unlet! b:ale_cpp_cpplint_options
+
+  runtime ale_linters/cpp/cpplint.vim
+
+After:
+  Restore
+  unlet! b:command_tail
+  unlet! b:ale_cpp_cpplint_executable
+  unlet! b:ale_cpp_cpplint_options
+  call ale#linter#Reset()
+
+Execute(The executable should be configurable):
+  AssertEqual 'cpplint', ale_linters#cpp#cpplint#GetExecutable(bufnr(''))
+
+  let b:ale_cpp_cpplint_executable = 'foobar'
+
+  AssertEqual 'foobar', ale_linters#cpp#cpplint#GetExecutable(bufnr(''))
+
+Execute(The executable should be used in the command):
+  AssertEqual
+  \ ale#Escape('cpplint') . ' %s',
+  \ ale_linters#cpp#cpplint#GetCommand(bufnr(''))
+
+  let b:ale_cpp_cpplint_executable = 'foobar'
+
+  AssertEqual
+  \ ale#Escape('foobar') . ' %s',
+  \ ale_linters#cpp#cpplint#GetCommand(bufnr(''))
+  \
+Execute(The options should be configurable):
+  let b:ale_cpp_cpplint_options = '--something'
+
+  AssertEqual
+  \ ale#Escape('cpplint') . ' --something %s',
+  \ ale_linters#cpp#cpplint#GetCommand(bufnr(''))