clang-format: Add a fallback style to Emacs mode

Summary:
This allows one to enable `clang-format-buffer` on file save and avoid
reformatting files that are outside of any project with .clang-format style.

Reviewers: djasper, klimek, sammccall, owenpan, mitchell-stellar, MyDeveloperDay

Reviewed By: MyDeveloperDay

Subscribers: cfe-commits

Patch By: dottedmag

Tags: #clang, #clang-format

Differential Revision: https://reviews.llvm.org/D69752
This commit is contained in:
paulhoad 2019-11-06 09:50:54 +00:00
parent 76ec6b1ef6
commit f349cc37cc

View File

@ -57,6 +57,18 @@ of the buffer."
:safe #'stringp)
(make-variable-buffer-local 'clang-format-style)
(defcustom clang-format-fallback-style "none"
"Fallback style to pass to clang-format.
This style will be used if clang-format-style is set to \"file\"
and no .clang-format is found in the directory of the buffer or
one of parent directories. Set to \"none\" to disable formatting
in such buffers."
:group 'clang-format
:type 'string
:safe #'stringp)
(make-variable-buffer-local 'clang-format-fallback-style)
(defun clang-format--extract (xml-node)
"Extract replacements and cursor information from XML-NODE."
(unless (and (listp xml-node) (eq (xml-node-name xml-node) 'replacements))
@ -162,6 +174,7 @@ uses the function `buffer-file-name'."
,@(and assume-file-name
(list "-assume-filename" assume-file-name))
,@(and style (list "-style" style))
"-fallback-style" ,clang-format-fallback-style
"-offset" ,(number-to-string file-start)
"-length" ,(number-to-string (- file-end file-start))
"-cursor" ,(number-to-string cursor))))