emacs-configure

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本文主要记录spacemacs配置c-c++编辑器,Python编辑器,web前端编辑器；以备以后翻阅

c-c++配置

使用c-c++layer及company mode是必须的，不需要再说了

company-c-headers

在安装c-c++layer时，会自动安装该package，我们只需要配置下头文件目录，如果大型工程，涉及上百万行代码的，使用semantic可能会比较卡，这时候其实只要使用company-c-headerspackage，就已经能实现较为不错的函数自动补全功能

(with-eval-after-load 'company-c-headers
  (add-to-list 'company-c-headers-path-system "/usr/include/c++/4.2.1")
)
(add-hook 'c++-mode-hook
          (lambda ()
            (set (make-local-variable 'company-backends) '(company-semantic company-c-headers  company-dabbrev-code  company-gtags company-c-headers company-keywords company-files company-dabbrev))
        )
    )

ggtags

  • 当代码量比较大时，推荐使用ggtags进行静态代码补全即可，需要安装一个gnu global(brew install global)，再配置一下更方便的快捷键(我一般绑定s-g *)和一些个人设置
(setq
  helm-gtags-ignore-case t
  helm-gtags-auto-update t
  helm-gtags-use-input-at-cursor t
  helm-gtags-pulse-at-cursor t
  helm-gtags-prefix-key "\C-cg"
  helm-gtags-suggested-key-mapping t
  )
(set 'helm-gtags-mode t)
(with-eval-after-load 'helm-gtags
  (define-key helm-gtags-mode-map (kbd "s-g s") 'helm-gtags-select)
  (define-key helm-gtags-mode-map (kbd "s-g r") 'helm-gtags-find-rtag)
  (define-key helm-gtags-mode-map (kbd "s-g f") 'helm-gtags-find-symbol)
  (define-key helm-gtags-mode-map (kbd "s-<") 'helm-gtags-previous-history)
  (define-key helm-gtags-mode-map (kbd "s->") 'helm-gtags-next-history)
  (define-key helm-gtags-mode-map (kbd "s-,") 'helm-gtags-pop-stack)
  (define-key helm-gtags-mode-map (kbd "s-g c") 'helm-gtags-create-tags)
  (define-key helm-gtags-mode-map (kbd "s-g D") 'helm-gtags-dwim-other-window)
  (define-key helm-gtags-mode-map (kbd "s-g d") 'helm-gtags-dwim)
  (define-key helm-gtags-mode-map (kbd "s-g t") 'helm-gtags-tags-in-this-function)
  (define-key helm-gtags-mode-map (kbd "s-g k") 'helm-gtags-show-stack)
  (define-key helm-gtags-mode-map (kbd "s-g a") 'helm-gtags-clear-stack)
  )
  • 全工程搜索关键字，需要安装ag(brew install ag)搜索引擎，再配置一下快捷键(我一般绑定s-h *)
(with-eval-after-load 'helm-gtags
  (define-key c++-mode-map (kbd "s-h d") 'helm-ag)
  (define-key c++-mode-map (kbd "s-h t") 'helm-ag-this-file)
  (define-key c++-mode-map (kbd "s-h b") 'helm-ag-buffers)
  (define-key c++-mode-map (kbd "s-h p") 'helm-ag-project-root)
  (define-key c++-mode-map (kbd "s-h D") 'helm-do-ag)
  (define-key c++-mode-map (kbd "s-h T") 'helm-do-ag-this-file)
  (define-key c++-mode-map (kbd "s-h B") 'helm-do-ag-buffers)
  (define-key c++-mode-map (kbd "s-h P") 'helm-do-ag-project-root)
  (define-key c++-mode-map (kbd "s-h c") 'helm-ag-clear-stack)
)

clang-format

配置clang-format自动排版

  • 首先在自己的代码工程根目录创建.clang-format文件

  • 配置clang-format快捷键

(defun clang-format-bindings-cpp ()
  (define-key c++-mode-map (kbd "s-c f") 'clang-format-region)
  (define-key c++-mode-map (kbd "s-c b") 'clang-format-buffer)
  )
(add-hook 'c++-mode-hook 'clang-format-bindings-cpp)
  • 配置save保存时自动调用clang-format对代码进行排版再保存
;; 调用该函数在自动保存c-c++文件时，会检测.clang-format函数，有则自动排版，没有则不
(defun pan/clang-format-buffer-smart ()
  "Reformat buffer if .clang-format exists in the projectile root."
  (interactive)
  (when (f-exists? (expand-file-name ".clang-format" (projectile-project-root)))
    (clang-format-buffer)))
;; 保存时自动排版文件
(defun my-c++-mode-before-save-hook ()
  (when (or (eq major-mode 'c-mode) (eq major-mode 'c++-mode) )
    (message "Begin to format buffer by .clang-format!")
    (pan/clang-format-buffer-smart)))

(add-hook 'before-save-hook #'my-c++-mode-before-save-hook)

hideshow

使用hideshow折叠代码

(with-eval-after-load 'hideshow
  (define-key c-mode-map (kbd "s-c h") 'hs-toggle-hiding)
  (define-key c-mode-map (kbd "s-c a") 'hs-hide-all)
  (define-key c-mode-map (kbd "s-c l") 'hs-hide-level)
  )

c-c++ package###

使用c-c++ package自带的clang-support补全代码，包括头文件函数，结构体成员变量自动提示，c++函数、成员变量等自动提示，基本和IDE提供的自动提示功能无异

     (c-c++ :variables
            c-c++-default-mode-for-headers 'c++-mode
            c-c++-enable-clang-support t)
     (auto-completion :variables
                      auto-completion-enable-snippets-in-popup t
                      auto-completion-enable-help-tooltip t
                      auto-completion-enable-sort-by-usage t
                      )
     (auto-completion :variables
                      auto-completion-enable-snippets-in-popup t
                      auto-completion-enable-help-tooltip t
                      auto-completion-enable-sort-by-usage t
                      )

python

anaconda mode

python layer安装就不说了，主要记录下(anaconda mode)[https://github.com/proofit404/anaconda-mode]，代码提示就靠他了

如果安装anaconda-mode代码提示有问题，注意以下几点

  • cli和emacs识别到的系统默认python版本可能不一致，emacs貌似是python3优先的，具体原因还没找到
  • 如果代码提示的时候发现一些系统自带的库可以提示，但是自己通过pip或者其他途径安装的包无法提示，可以参考下(emacs-china)[https://emacs-china.org/t/topic/6104/15]
  • 使用virtual environment有好处，但是我还是不太会用
  (add-hook 'python-mode-hook
          (lambda ()
            (set (make-local-variable 'company-backends) '(company-anaconda company-dabbrev))
            (local-set-key (kbd "c-r") 'anaconda-mode-find-references)
            (local-set-key (kbd "c-d")  'anaconda-mode-find-definitions)
            (local-set-key (kbd "c-u") 'anaconda-mode-find-assignments)
            (local-set-key (kbd "c-y") 'anaconda-mode-show-doc)
            (local-set-key (kbd "s-i") 'python-start-or-switch-repl)
            (local-set-key (kbd "s-n") 'python-shell-send-buffer)
            (local-set-key (kbd "s-N") 'python-shell-send-buffer-switch)
            (local-set-key (kbd "s-m") 'python-shell-send-defun)
            (local-set-key (kbd "s-M") 'python-shell-send-defun-switch)
            (local-set-key (kbd "s-r") 'python-shell-send-region)
            (local-set-key (kbd "s-R") 'python-shell-send-region-switch)
            (company-quickhelp-mode)
            ))

(add-hook 'python-mode-hook 'anaconda-mode)
(add-hook 'python-mode-hook 'eldoc-mode)

python

go

  • 通过brew install go安装go编译环境
  • 安装go layer,官方有详细文档

但是在安装一些go工具包(例如guru,gorename,goimports等)时，可能会遇到一点问题，即使我用了科学上网，依旧无法成功安装，但我我们可以把包下载了，自己手动安装，步骤如下

  • 确定你的gopath路径，例如我的是/Users/pan/go,将如下语句加入~/.bashrc_profile

    export PATH=$PATH:/usr/local/opt/go/libexec/bin
export GOPATH=/Users/pan/go
PATH="$GOPATH/bin:$PATH"

  • 再在bash中执行以下命令

  git clone https://github.com/golang/tools.git tools
  mkdir -p /Users/pan/go/golang.org/x/tools
  cp -r tools/* /Users/pan/go/golang.org/x/tools
  go install golang.org/x/tools/cmd/guru
  go install  golang.org/x/tools/cmd/gorename
  go install golang.org/x/tools/cmd/goimports