dynamic tangling based on tags

zshrc.org

@@ -12,6 +12,7 @@ All posts in here will have the category set to /zsh/.
 :EXPORT_FILE_NAME: zshrc-file
 :EXPORT_DATE: 2020-08-05
 :EXPORT_HUGO_MENU: :menu "main"
+:header-args:   :tangle (org-tags-to-filenames)
 :END:
 This is my ~.zshrc~; it will be used in many environments:
 - daily driver (gentoo box with kde)
@@ -20,12 +21,29 @@ This is my ~.zshrc~; it will be used in many environments:
 - raspberry pi
 - mips box
 
-Each environment has slightly different setups, which will be tangled to different files
+Each environment has slightly different setups, which will be tangled
+to different files according to the function `org-tags-to-filenames',
+which checks the tags of the current headline and returns a list of
+corresponding filenames.  For instance if the tags are daily and pi,
+the function returns '(".zshrc" ".zshrc.pi")
+
+
+#+name:def-tag
+#+begin_src emacs-lisp :results output silent
+  (setq tag-to-filenames-alist '(("daily" . ".zshrc")
+                                 ("pi" . ".zshrc.pi")))
+  (defun org-tags-to-filenames ()
+    (remove nil (mapcar
+                 (lambda (tag)
+                   (cdr (assoc tag tag-to-filenames-alist)))
+                 (org-split-string (car (last (org-heading-components))) ":"))))
+#+end_src
+
 
-*** Include :daily:pi:
+*** Include :daily:pi:android:
 
   First, include a script that sets a number of confidential data (e.g. API keys and such)
-  #+BEGIN_SRC sh :tangle ".zshrc"
+  #+BEGIN_SRC sh
     source ~/.config/confidential.sh
     # This defines a number of env variables:
     # ANDROID_A3=xxxx
@@ -34,7 +52,7 @@ Each environment has slightly different setups, which will be tangled to differe
     # ifttt_apikey=xyz
   #+end_src
   Then, add helper directory to fpath
-  #+begin_src sh :tangle ".zshrc"
+  #+begin_src sh
   fpath=(~/clones/zshrc/ $fpath)
 
   #+end_src
@@ -46,7 +64,7 @@ Each environment has slightly different setups, which will be tangled to differe
 
 The other two swap between build and src dirs on my local git checkout
 
-  #+BEGIN_SRC sh :tangle ".zshrc"
+  #+BEGIN_SRC sh
      kde-current-activity () {
        qdbus org.kde.ActivityManager /ActivityManager/Activities org.kde.ActivityManager.Activities.CurrentActivity
      }
@@ -80,7 +98,7 @@ The other two swap between build and src dirs on my local git checkout
 
 These are various helpers to drive my current Android phone when connected to the box.
 
-   #+begin_src sh :tangle ".zshrc"
+   #+begin_src sh
 
      run-task () {
          adb shell am broadcast --user 0 -a net.dinglish.tasker.run_task -e task "$1"
@@ -131,10 +149,10 @@ setup-pi-webcam()
 :CREATED:  [2021-05-01 Sat 10:35]
 :END:
 
-*** Misc helpers
+*** Misc helpers                                           :pi:daily:android:
 
     - wttr.in
-    #+begin_src sh :tangle '(".zshrc" ".zshrc.pi" ".zshrc.android")
+    #+begin_src sh
      wttr()
      {
          local location=Toronto
@@ -166,11 +184,11 @@ setup-pi-webcam()
       _ifttt
     #+end_src
     Load the function
-    #+begin_src shell :tangle '(".zshrc" ".zshrc.pi")
+    #+begin_src sh
       autoload ifttt
     #+end_src
-*** konsole helpers
-   #+begin_src sh :tangle ".zshrc"
+*** konsole helpers                                                   :daily:
+   #+begin_src sh
       function set-terminal-title() {
           echo -en "\e]2;$@\a"
       }
@@ -193,9 +211,9 @@ setup-pi-webcam()
       }
     #+end_src
 
-*** emacs helpers
+*** emacs helpers                                                     :daily:
 
-   #+begin_src sh :tangle ".zshrc"
+   #+begin_src sh
      SOLARIZED="true"
      export EMACS="/home/jacopods/.emacs.d/emacsclient-activities"
 
@@ -226,8 +244,8 @@ setup-pi-webcam()
      }
 
    #+end_src
-*** oh-my-zsh setup
-   #+begin_src sh :tangle '(".zshrc" ".zshrc.pi" ".zshrc.android")
+*** oh-my-zsh setup                                        :daily:pi:android:
+   #+begin_src sh
 
      # Path to your oh-my-zsh configuration.
      ZSH=$HOME/.oh-my-zsh
@@ -330,9 +348,9 @@ setup-pi-webcam()
 
      autoload zmv
    #+end_src
-*** TODO editor env variables
+*** TODO editor env variables                                         :daily:
     This needs to be diff'd among the versions
-   #+begin_src sh :tangle ".zshrc"
+   #+begin_src sh
 
      # editor stuff
 
@@ -341,8 +359,8 @@ setup-pi-webcam()
      export GIT_EDITOR=$EMACS
      export SUDO_EDITOR=$EMACS
    #+end_src
-*** git helpers
-   #+begin_src sh :tangle ".zshrc"
+*** git helpers                                                       :daily:
+   #+begin_src sh
      git-create-pi-remote () {
          REPO_NAME=$(basename "`pwd`")
          source ~/scripts/git-init-pi4.sh "$REPO_NAME.git"
@@ -365,9 +383,9 @@ setup-pi-webcam()
 :CREATED:  [2021-05-01 Sat 16:26]
 :END:
 
-*** Aliases
+*** Aliases                                                :pi:android:daily:
 
-   #+begin_src sh :tangle ".zshrc"
+   #+begin_src sh
 
 
      ## Aliases
@@ -386,9 +404,9 @@ setup-pi-webcam()
      alias xou="source /home/jacopods/scripts/setwacom.sh;/home/jacopods/clones/xournalpp/build/src/xournalpp"
    #+end_src
 
-*** Pomodoro helpers
+*** Pomodoro helpers                                       :daily:pi:android:
 
-   #+begin_src sh :tangle ".zshrc"
+   #+begin_src sh
      termdown_bin=/home/jacopods/.local/bin/termdown
 
      alias pomo="$termdown_bin 25m -aW -f 3x5 -c 180 -b -q 10 -s $@"