add chpwd_profiles from grml zshrc, this makes profiles work

1 files changed, 89 insertions, 3 deletions

diff --git a/.zsh/zshrc/90_profiles b/.zsh/zshrc/90_profiles
index dca3a5f..57e5315 100644
--- a/.zsh/zshrc/90_profiles
+++ b/.zsh/zshrc/90_profiles
@@ -4,14 +4,19 @@
 #
 # http://michael-prokop.at/blog/2009/05/30/directory-specific-shell-configuration-with-zsh
 #
+# chpwd_profiles taken from grml zshrc
+#
 # Copyright © 2010 Tobias Klauser <tklauser@distanz.ch>
 # Released under the terms of the Artistic Licence 2.0
 #
 # Source repository: git://git.distanz.ch/dotfiles/zsh.git
+#
 
-zstyle ':chpwd:profiles:/home/tklauser/src/nios2-linux(|/|/*)'	    profile nios2linux
-zstyle ':chpwd:profiles:/home/tklauser/projects/sinet(|/|/*)'	      profile sinet
-zstyle ':chpwd:profiles:/home/tklauser/src/linux-2.6(|/|/*)'        profile linux26
+CHPWD_PROFILE='default'
+
+zstyle ':chpwd:profiles:/home/tklauser/src/nios2-linux(|/|/*)'  profile nios2linux
+zstyle ':chpwd:profiles:/home/tklauser/projects/sinet(|/|/*)'	  profile sinet
+zstyle ':chpwd:profiles:/home/tklauser/src/linux-2.6(|/|/*)'    profile linux26
 
 chpwd_profile_nios2linux()
 {
@@ -49,4 +54,85 @@ chpwd_profile_linux26()
 	export GIT_COMMITTER_EMAIL="tklauser@distanz.ch"
 }
 
+function chpwd_profiles() {
+    # Say you want certain settings to be active in certain directories.
+    # This is what you want.
+    #
+    # zstyle ':chpwd:profiles:/usr/src/grml(|/|/*)'   profile grml
+    # zstyle ':chpwd:profiles:/usr/src/debian(|/|/*)' profile debian
+    #
+    # When that's done and you enter a directory that matches the pattern
+    # in the third part of the context, a function called chpwd_profile_grml,
+    # for example, is called (if it exists).
+    #
+    # If no pattern matches (read: no profile is detected) the profile is
+    # set to 'default', which means chpwd_profile_default is attempted to
+    # be called.
+    #
+    # A word about the context (the ':chpwd:profiles:*' stuff in the zstyle
+    # command) which is used: The third part in the context is matched against
+    # ${PWD}. That's why using a pattern such as /foo/bar(|/|/*) makes sense.
+    # Because that way the profile is detected for all these values of ${PWD}:
+    #   /foo/bar
+    #   /foo/bar/
+    #   /foo/bar/baz
+    # So, if you want to make double damn sure a profile works in /foo/bar
+    # and everywhere deeper in that tree, just use (|/|/*) and be happy.
+    #
+    # The name of the detected profile will be available in a variable called
+    # 'profile' in your functions. You don't need to do anything, it'll just
+    # be there.
+    #
+    # Then there is the parameter $CHPWD_PROFILE is set to the profile, that
+    # was is currently active. That way you can avoid running code for a
+    # profile that is already active, by running code such as the following
+    # at the start of your function:
+    #
+    # function chpwd_profile_grml() {
+    #     [[ ${profile} == ${CHPWD_PROFILE} ]] && return 1
+    #   ...
+    # }
+    #
+    # The initial value for $CHPWD_PROFILE is 'default'.
+    #
+    # Version requirement:
+    #   This feature requires zsh 4.3.3 or newer.
+    #   If you use this feature and need to know whether it is active in your
+    #   current shell, there are several ways to do that. Here are two simple
+    #   ways:
+    #
+    #   a) If knowing if the profiles feature is active when zsh starts is
+    #      good enough for you, you can put the following snippet into your
+    #      .zshrc.local:
+    #
+    #   (( ${+functions[chpwd_profiles]} )) && print "directory profiles active"
+    #
+    #   b) If that is not good enough, and you would prefer to be notified
+    #      whenever a profile changes, you can solve that by making sure you
+    #      start *every* profile function you create like this:
+    #
+    #   function chpwd_profile_myprofilename() {
+    #       [[ ${profile} == ${CHPWD_PROFILE} ]] && return 1
+    #       print "chpwd(): Switching to profile: $profile"
+    #     ...
+    #   }
+    #
+    #      That makes sure you only get notified if a profile is *changed*,
+    #      not everytime you change directory, which would probably piss
+    #      you off fairly quickly. :-)
+    #
+    # There you go. Now have fun with that.
+    local -x profile
+
+    zstyle -s ":chpwd:profiles:${PWD}" profile profile || profile='default'
+    if (( ${+functions[chpwd_profile_$profile]} )) ; then
+        chpwd_profile_${profile}
+    fi
+
+    CHPWD_PROFILE="${profile}"
+    return 0
+}
+chpwd_functions=( ${chpwd_functions} chpwd_profiles )
+
+
 # vim:ft=zsh