Allow arbitrary ZIM location with ZIM_HOME

This change allow arbitrary Zim location path by setting a new
environment variable, ZIM_HOME. If the user does not set it, Zim falls
back to the old "${ZDOTDIR:-${HOME}}/.zim" location.

Closes #203

init.zsh

@@ -9,7 +9,7 @@ if ! is-at-least 5.2; then
 fi
 
 # Define zim location
-ZIM="${ZDOTDIR:-${HOME}}/.zim"
+(( ! ${+ZIM_HOME} )) && ZIM_HOME="${ZDOTDIR:-${HOME}}/.zim"
 
 # Source user configuration
 if [[ -s "${ZDOTDIR:-${HOME}}/.zimrc" ]]; then
@@ -20,9 +20,9 @@ load_zim_module() {
   local wanted_module
 
   for wanted_module (${zmodules}); do
-    if [[ -s "${ZIM}/modules/${wanted_module}/init.zsh" ]]; then
+    if [[ -s "${ZIM_HOME}/modules/${wanted_module}/init.zsh" ]]; then
-      source "${ZIM}/modules/${wanted_module}/init.zsh"
+      source "${ZIM_HOME}/modules/${wanted_module}/init.zsh"
-    elif [[ ! -d "${ZIM}/modules/${wanted_module}" ]]; then
+    elif [[ ! -d "${ZIM_HOME}/modules/${wanted_module}" ]]; then
       print "No such module \"${wanted_module}\"." >&2
     fi
   done
@@ -33,12 +33,12 @@ load_zim_function() {
   local mod_function
 
   # autoload searches fpath for function locations; add enabled module function paths
-  fpath=(${${zmodules}:+${ZIM}/modules/${^zmodules}/functions(/FN)} ${fpath})
+  fpath=(${${zmodules}:+${ZIM_HOME}/modules/${^zmodules}/functions(/FN)} ${fpath})
 
   function {
     setopt LOCAL_OPTIONS EXTENDED_GLOB
 
-    for mod_function in ${ZIM}/modules/${^zmodules}/functions/${~function_glob}; do
+    for mod_function in ${ZIM_HOME}/modules/${^zmodules}/functions/${~function_glob}; do
       autoload -Uz ${mod_function}
     done
   }

modules/custom/functions/example_function

@@ -1,4 +1,4 @@
 # this is an example function
 # running 'example_function' in a zsh session will execute the code below
 
-print "executed example function: ${ZDOTDIR:-${HOME}}/modules/custom/functions/example_function!"
+print "executed example function: ${ZIM_HOME}/modules/custom/functions/example_function!"

modules/debug/functions/trace-zim

@@ -43,9 +43,9 @@ cp ${ZDOTDIR:-${HOME}}/.zshrc /tmp/ztrace/.zshrc.orig
 cp ${ZDOTDIR:-${HOME}}/.zimrc /tmp/ztrace/.zimrc
 # rsync will allow us to not have to copy the .git folder; use if available 
 if (( ${+commands[rsync]} )); then
-  rsync -az --exclude .git ${ZDOTDIR:-${HOME}}/.zim /tmp/ztrace/
+  rsync -az --exclude .git ${ZIM_HOME} /tmp/ztrace/
 else
-  cp -R ${ZDOTDIR:-${HOME}}/.zim /tmp/ztrace/
+  cp -R ${ZIM_HOME} /tmp/ztrace/
 fi
 
 # create a modified .zshrc to produce a trace log

templates/zlogin

@@ -17,7 +17,7 @@
     fi
   }
 
-  zim_mods=${ZDOTDIR:-${HOME}}/.zim/modules
+  zim_mods=${ZIM_HOME}/modules
   setopt EXTENDED_GLOB
 
   # zcompile the completion cache; siginificant speedup.

templates/zshrc

@@ -4,8 +4,11 @@
 # User configuration sourced by interactive shells
 #
 
+# Change default zim location 
+export ZIM_HOME=${ZDOTDIR:-${HOME}}/.zim
+
 # Source zim
-if [[ -s ${ZDOTDIR:-${HOME}}/.zim/init.zsh ]]; then
+if [[ -s ${ZIM_HOME}/init.zsh ]]; then
-  source ${ZDOTDIR:-${HOME}}/.zim/init.zsh
+  source ${ZIM_HOME}/init.zsh
 fi
 

tools/zim_build_cache

@@ -2,4 +2,4 @@
 # zim_build_cache - rebuilds the zim cache
 #
 
-source ${ZDOTDIR:-${HOME}}/.zim/templates/zlogin
+source ${ZIM_HOME}/templates/zlogin

tools/zim_clean_cache

@@ -2,7 +2,7 @@
 # zim_clean_cache - removes all zcompiled files
 #
 
-find ${ZDOTDIR:-${HOME}}/.zim/ -iname '*.zwc' | xargs rm
+find ${ZIM_HOME} -iname '*.zwc' | xargs rm
 rm -f ${ZDOTDIR:-${HOME}}/.{zshrc.zwc,zcompdump,zcompdump.zwc}
 
 print 'To rebuild the completion cache, please restart your terminal'

tools/zim_info

@@ -2,7 +2,7 @@
 # zim_info - prints zim and system info
 #
 
-cd ${ZDOTDIR:-${HOME}}/.zim
+cd ${ZIM_HOME}
 
 print "Zim commit ref:   $(command git rev-parse --short HEAD)"
 print "Zsh version:      $(command zsh --version)"

tools/zim_issue

@@ -24,7 +24,7 @@ if ! waiter_func; then
 fi
 
 # for convenience, this is our new home
-cd ${ZDOTDIR:-${HOME}}/.zim
+cd ${ZIM_HOME}
 
 # collect sys info
 git_dirty=$(command git status --porcelain 2>/dev/null | tail -n1)
@@ -64,7 +64,7 @@ done
 
 # if we have a dirty git, report it
 if [[ -n ${git_dirty} ]]; then
-  print "${ZDOTDIR:-${HOME}}/.zim has a dirty git working tree."
+  print "${ZIM_HOME} has a dirty git working tree."
   print "here is the diff:"
   print '```'
   print $(command git diff)

tools/zim_remove

@@ -10,4 +10,4 @@ sed '/# The following code helps/,/) &!/d' ${ZDOTDIR:-${HOME}}/.zlogin
 rm -f ${ZDOTDIR:-${HOME}}/.zimrc
 
 # not forcing this one, as it is recursive. It's possible something went wrong.
-rm -r ${ZDOTDIR:-${HOME}}/.zim/
+rm -r ${ZIM_HOME}

tools/zim_reset

@@ -2,5 +2,5 @@
 # zim_reset - resets the zim repository to latest commit
 #
 
-cd ${ZDOTDIR:-${HOME}}/.zim
+cd ${ZIM_HOME}
 git reset --hard

tools/zim_update

@@ -2,7 +2,7 @@
 # zim_update - update the zim repository
 #
 
-cd ${ZDOTDIR:-${HOME}/.zim}
+cd ${ZIM_HOME}
 
 # this is the cleanest way I know how to update a repository
 git remote update -p