Add bibclen fixer support

Closes #1910

12 files changed, 208 insertions, 3 deletions

diff --git a/README.md b/README.md
index ad55e255..7a8196f3 100644
--- a/README.md
+++ b/README.md
@@ -104,6 +104,7 @@ formatting.
 | AsciiDoc | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [redpen](http://redpen.cc/), [write-good](https://github.com/btford/write-good), [vale](https://github.com/ValeLint/vale) |
 | Awk | [gawk](https://www.gnu.org/software/gawk/)|
 | Bash | [language-server](https://github.com/mads-hartmann/bash-language-server), shell [-n flag](https://www.gnu.org/software/bash/manual/bash.html#index-set), [shellcheck](https://www.shellcheck.net/), [shfmt](https://github.com/mvdan/sh) |
+| BibTeX | [bibclean](http://ftp.math.utah.edu/pub/bibclean/) |
 | Bourne Shell | shell [-n flag](http://linux.die.net/man/1/sh), [shellcheck](https://www.shellcheck.net/), [shfmt](https://github.com/mvdan/sh) |
 | C | [cppcheck](http://cppcheck.sourceforge.net), [cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint), [clang](http://clang.llvm.org/), [clangd](https://clang.llvm.org/extra/clangd.html), [clangtidy](http://clang.llvm.org/extra/clang-tidy/) !!, [clang-format](https://clang.llvm.org/docs/ClangFormat.html), [cquery](https://github.com/cquery-project/cquery), [flawfinder](https://www.dwheeler.com/flawfinder/), [gcc](https://gcc.gnu.org/), [uncrustify](https://github.com/uncrustify/uncrustify), [ccls](https://github.com/MaskRay/ccls) |
 | C++ (filetype cpp) | [clang](http://clang.llvm.org/), [clangd](https://clang.llvm.org/extra/clangd.html), [clangcheck](http://clang.llvm.org/docs/ClangCheck.html) !!, [clangtidy](http://clang.llvm.org/extra/clang-tidy/) !!, [clang-format](https://clang.llvm.org/docs/ClangFormat.html), [clazy](https://github.com/KDE/clazy) !!, [cppcheck](http://cppcheck.sourceforge.net), [cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint) !!, [cquery](https://github.com/cquery-project/cquery), [flawfinder](https://www.dwheeler.com/flawfinder/), [gcc](https://gcc.gnu.org/), [uncrustify](https://github.com/uncrustify/uncrustify), [ccls](https://github.com/MaskRay/ccls) |
diff --git a/ale_linters/bib/bibclean.vim b/ale_linters/bib/bibclean.vim
new file mode 100644
index 00000000..6750f22f
--- /dev/null
+++ b/ale_linters/bib/bibclean.vim
@@ -0,0 +1,74 @@
+" Author: Horacio Sanson - https://github.com/hsanson
+" Description: Support for bibclean linter for BibTeX files.
+
+call ale#Set('bib_bibclean_executable', 'bibclean')
+
+function! ale_linters#bib#bibclean#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'bib_bibclean_executable')
+
+    return ale#Escape(l:executable) . ' -file-position '
+endfunction
+
+function! ale_linters#bib#bibclean#get_type(str) abort
+    if a:str is# '??'
+       return 'E'
+    else
+       return 'W'
+    endif
+endfunction
+
+function! ale_linters#bib#bibclean#match_msg(line) abort
+    return matchlist(a:line, '^\(.*\) "stdin", line \(.*\): \(.*\)$')
+endfunction
+
+function! ale_linters#bib#bibclean#match_entry(line) abort
+    return matchlist(a:line, 'Entry   input byte=.* line=\(.*\) column=\(.*\) output .*$')
+endfunction
+
+function! ale_linters#bib#bibclean#match_value(line) abort
+    return matchlist(a:line, 'Value   input byte=.* line=\(.*\) column=\(.*\) output .*$')
+endfunction
+
+function! ale_linters#bib#bibclean#Handle(buffer, lines) abort
+    let l:output = []
+
+    let l:type = 'E'
+    let l:msg  = ''
+
+    for l:line in a:lines
+      if empty(l:msg)
+          let l:mlist = ale_linters#bib#bibclean#match_msg(l:line)
+
+          if !empty(l:mlist)
+              let l:msg = l:mlist[3]
+              let l:type = ale_linters#bib#bibclean#get_type(l:mlist[1])
+          endif
+      else
+          if l:type is# 'E'
+               let l:mlist = ale_linters#bib#bibclean#match_entry(l:line)
+          else
+               let l:mlist = ale_linters#bib#bibclean#match_value(l:line)
+          endif
+
+          if !empty(l:mlist)
+            call add(l:output, {
+              \ 'lnum': l:mlist[1],
+              \ 'col': l:mlist[2],
+              \ 'text': l:msg,
+              \ 'type': l:type
+              \})
+             let l:msg = ''
+          endif
+      endif
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('bib', {
+\   'name': 'bibclean',
+\   'executable_callback': ale#VarFunc('bib_bibclean_executable'),
+\   'command_callback': 'ale_linters#bib#bibclean#GetCommand',
+\   'output_stream': 'stderr',
+\   'callback': 'ale_linters#bib#bibclean#Handle',
+\})
diff --git a/autoload/ale/fix/registry.vim b/autoload/ale/fix/registry.vim
index a54be420..75fd1508 100644
--- a/autoload/ale/fix/registry.vim
+++ b/autoload/ale/fix/registry.vim
@@ -17,6 +17,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['python'],
 \       'description': 'Fix PEP8 issues with autopep8.',
 \   },
+\   'bibclean': {
+\       'function': 'ale#fixers#bibclean#Fix',
+\       'suggested_filetypes': ['bib'],
+\       'description': 'Format bib files using bibclean.',
+\   },
 \   'black': {
 \       'function': 'ale#fixers#black#Fix',
 \       'suggested_filetypes': ['python'],
diff --git a/autoload/ale/fixers/bibclean.vim b/autoload/ale/fixers/bibclean.vim
new file mode 100644
index 00000000..89cb97ab
--- /dev/null
+++ b/autoload/ale/fixers/bibclean.vim
@@ -0,0 +1,15 @@
+" Author: Horacio Sanson - https://github.com/hsanson
+" Description: Support for bibclean fixer for BibTeX files.
+
+call ale#Set('bib_bibclean_executable', 'bibclean')
+call ale#Set('bib_bibclean_options', '-align-equals')
+
+function! ale#fixers#bibclean#Fix(buffer) abort
+    let l:options = ale#Var(a:buffer, 'bib_bibclean_options')
+    let l:executable = ale#Var(a:buffer, 'bib_bibclean_executable')
+
+    return {
+    \   'command': ale#Escape(l:executable)
+    \       . ' ' . (empty(l:options) ? '' : l:options),
+    \}
+endfunction
diff --git a/doc/ale-bib.txt b/doc/ale-bib.txt
new file mode 100644
index 00000000..35998c30
--- /dev/null
+++ b/doc/ale-bib.txt
@@ -0,0 +1,19 @@
+===============================================================================
+ALE BibTeX Integration                                        *ale-bib-options*
+
+
+===============================================================================
+bibclean                                                     *ale-bib-bibclean*
+
+g:ale_bib_bibclean_executable                   *g:ale_bib_bibclean_executable*
+
+  Type: |String|
+  Default: `'bibclean'`
+
+g:ale_bib_bibclean_options                         *g:ale_bib_bibclean_options*
+
+  Type: |String|
+  Default: `'-align-equals'`
+
+===============================================================================
+vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:
diff --git a/doc/ale.txt b/doc/ale.txt
index 1a37f73f..48d7bc13 100644
--- a/doc/ale.txt
+++ b/doc/ale.txt
@@ -31,6 +31,8 @@ CONTENTS                                                         *ale-contents*
       gcc.................................|ale-asm-gcc|
     awk...................................|ale-awk-options|
       gawk................................|ale-awk-gawk|
+    bib...................................|ale-bib-options|
+      bibclean............................|ale-bib-bibclean|
     c.....................................|ale-c-options|
       clang...............................|ale-c-clang|
       clangd..............................|ale-c-clangd|
@@ -403,6 +405,7 @@ Notes:
 * AsciiDoc: `alex`!!, `proselint`, `redpen`, `write-good`, `vale`
 * Awk: `gawk`
 * Bash: `language-server`, `shell` (-n flag), `shellcheck`, `shfmt`
+* BibTeX: `bibclean`
 * Bourne Shell: `shell` (-n flag), `shellcheck`, `shfmt`
 * C: `cppcheck`, `cpplint`!!, `clang`, `clangd`, `clangtidy`!!, `clang-format`, `cquery`, `flawfinder`, `gcc`, `uncrustify`, `ccls`
 * C++ (filetype cpp): `clang`, `clangd`, `clangcheck`!!, `clangtidy`!!, `clang-format`, `clazy`!!, `cppcheck`, `cpplint`!!, `cquery`, `flawfinder`, `gcc`, `uncrustify`, `ccls`
diff --git a/test/command_callback/bib_paths/dummy.bib b/test/command_callback/bib_paths/dummy.bib
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/test/command_callback/bib_paths/dummy.bib
diff --git a/test/command_callback/test_bib_bibclean_command_callback.vader b/test/command_callback/test_bib_bibclean_command_callback.vader
new file mode 100644
index 00000000..fa6f7d33
--- /dev/null
+++ b/test/command_callback/test_bib_bibclean_command_callback.vader
@@ -0,0 +1,24 @@
+Before:
+  call ale#assert#SetUpLinterTest('bib', 'bibclean')
+
+  let g:ale_ruby_rubocop_executable = 'bibclean'
+  let g:ale_ruby_rubocop_options = ''
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(Executable should default to bibclean):
+  AssertLinter 'bibclean', ale#Escape('bibclean')
+  \   . ' -file-position '
+
+Execute(Should be able to set a custom executable):
+  let g:ale_bib_bibclean_executable = 'bin/bibclean'
+
+  AssertLinter 'bin/bibclean' , ale#Escape('bin/bibclean')
+  \   . ' -file-position '
+
+Execute(Should not include custom options):
+  let g:ale_bib_bibclean_options = '-no-prettryprint'
+
+  AssertLinter 'bibclean' , ale#Escape('bibclean')
+  \   . ' -file-position '
diff --git a/test/fixers/test_bibclean_fixer_callback.vader b/test/fixers/test_bibclean_fixer_callback.vader
new file mode 100644
index 00000000..8d3081e3
--- /dev/null
+++ b/test/fixers/test_bibclean_fixer_callback.vader
@@ -0,0 +1,30 @@
+Before:
+  Save g:ale_bib_bibclean_executable
+  Save g:ale_bib_bibclean_options
+
+  let g:ale_bib_bibclean_executable = 'xxxinvalid'
+  let g:ale_bib_bibclean_options = '-align-equals'
+
+  call ale#test#SetDirectory('/testplugin/test/fixers')
+
+After:
+  Restore
+  call ale#test#RestoreDirectory()
+
+Execute(The bibclean callback should return the correct default values):
+  call ale#test#SetFilename('../command_callback/bib_paths/dummy.bib')
+
+  AssertEqual
+  \ {'command': ale#Escape(g:ale_bib_bibclean_executable) . ' -align-equals'},
+  \ ale#fixers#bibclean#Fix(bufnr(''))
+
+Execute(The bibclean callback should include custom bibclean options):
+  let g:ale_bib_bibclean_options = '-author -check-values'
+  call ale#test#SetFilename('../command_callback/bib_paths/dummy.bib')
+
+  AssertEqual
+  \ {
+  \   'command': ale#Escape(g:ale_bib_bibclean_executable) . ' -author -check-values'
+  \ },
+  \ ale#fixers#bibclean#Fix(bufnr(''))
+
diff --git a/test/fixers/test_rufo_fixer_callback.vader b/test/fixers/test_rufo_fixer_callback.vader
index a0828406..98108efc 100644
--- a/test/fixers/test_rufo_fixer_callback.vader
+++ b/test/fixers/test_rufo_fixer_callback.vader
@@ -4,9 +4,7 @@ Before:
   " Use an invalid global executable, so we don't match it.
   let g:ale_ruby_rufo_executable = 'xxxinvalid'
 
-  call ale#test#SetDirectory('/testplugin/test/fixers')
-  silent cd ..
-  silent cd command_callback
+  call ale#test#SetDirectory('/testplugin/test/command_callback')
   let g:dir = getcwd()
 
 After:
diff --git a/test/handler/test_bibclean_handler.vader b/test/handler/test_bibclean_handler.vader
new file mode 100644
index 00000000..6179d7f5
--- /dev/null
+++ b/test/handler/test_bibclean_handler.vader
@@ -0,0 +1,35 @@
+Before:
+  runtime ale_linters/bib/bibclean.vim
+
+After:
+  call ale#linter#Reset()
+
+Execute(The bibclean handler should parse lines correctly):
+
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': '60',
+  \     'type': 'W',
+  \     'text': 'Unexpected value in ``month = "09"''''.',
+  \     'col': '17'
+  \   },
+  \   {
+  \     'lnum': '63',
+  \     'type': 'E',
+  \     'text': 'Expected comma after last field ``keywords''''.',
+  \     'col': ' 1'
+  \   }
+  \ ],
+  \ ale_linters#bib#bibclean#Handle(255, [
+  \ "%% \"stdin\", line 60: Unexpected value in ``month = \"09\"''.",
+  \ "%%  File positions:  input [main.bib]  output [stdout]",
+  \ "%%  Entry   input byte=1681 line=50 column= 1 output byte=1680 line=50 column= 0",
+  \ "%%  Value   input byte=2137 line=60 column=17 output byte=2137 line=60 column=17",
+  \ "%%  Current input byte=2139 line=60 column=19 output byte=2137 line=60 column=17",
+  \ "?? \"stdin\", line 71: Expected comma after last field ``keywords''.",
+  \ "??  File positions:  input [main.bib]  output [stdout]",
+  \ "??  Entry   input byte=2145 line=63 column= 1 output byte=2146 line=63 column= 0",
+  \ "??  Value   input byte=2528 line=71 column= 2 output byte=2527 line=70 column=49",
+  \ "??  Current input byte=2529 line=71 column= 3 output byte=2528 line=70 column=50"
+  \ ])
diff --git a/test/script/check-toc b/test/script/check-toc
index 8e411589..09d794ee 100755
--- a/test/script/check-toc
+++ b/test/script/check-toc
@@ -36,6 +36,7 @@ doc_files="$(/bin/ls -1v doc | grep ^ale- | sed 's/^/doc\//' | paste -sd ' ' -)"
 grep -h '\*ale-.*-options\|^[a-z].*\*ale-.*\*$' $doc_files \
     | sed 's/^/  /' \
     | sed 's/ALE Shell Integration/ALE sh Integration/' \
+    | sed 's/ALE BibTeX Integration/ALE bib Integration/' \
     | sed 's/  ALE \(.*\) Integration/\1/' \
     | sed 's/ *\*\(..*\)\*$/, \1/' \
     | tr '[:upper:]' '[:lower:]' \