]> git.madduck.net Git - etc/zsh.git/blobdiff - .zsh/util

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

provide run_at_most_every function
[etc/zsh.git] / .zsh / util
index 6c8970a86827ade89457848c592219c94c6e0811..9b865362716ae16afd785e56e8ef91bc55bbbbc4 100644 (file)
--- a/.zsh/util
+++ b/.zsh/util
@@ -2,7 +2,7 @@
 #
 # Miscellaneous utility functions
 #
 #
 # Miscellaneous utility functions
 #
-# Copyright © 1994–2008 martin f. krafft <madduck@madduck.net>
+# Copyright © 1994–2017 martin f. krafft <madduck@madduck.net>
 # Released under the terms of the Artistic Licence 2.0
 #
 # Source repository: http://git.madduck.net/v/etc/zsh.git
 # Released under the terms of the Artistic Licence 2.0
 #
 # Source repository: http://git.madduck.net/v/etc/zsh.git
@@ -12,4 +12,42 @@ is_root() {
   test ${EUID:?} -eq 0
 }
 
   test ${EUID:?} -eq 0
 }
 
+array_prepend() {
+  local arrayname="$1"; shift
+  local i
+  for i; do
+    eval "typeset -ga $arrayname; $arrayname=(\$i \${$arrayname[@]/\$i})"
+  done
+}
+
+array_append() {
+  local arrayname="$1"; shift
+  local i
+  for i; do
+    eval "typeset -ga $arrayname; $arrayname=(\${$arrayname[@]/\$i} \$i)"
+  done
+}
+
+function trace() { ( eval "set -x; $@"; ) }
+
+function run_at_most_every() {
+  local timespec=
+  case "$1" in
+    ((#b)([0-9]##)([smhd])) timespec="${match[2]}-${match[1]}";;
+    (*)
+      zerror "missing timespec: $@"
+      return
+  esac
+  shift
+
+  local sentinel_dir="${XDG_RUNTIME_DIR:-${TMPDIR:-/tmp}}/run_at_most_once_per"
+  mkdir --parent "${sentinel_dir}"
+  local sentinel="${sentinel_dir}/${*//[^[:alnum:]]##/_}_${timespec}"
+  if test -z ${sentinel}(#qNm${timespec}); then
+    touch "${sentinel}"
+    $@
+    return $?
+  fi
+}
+
 # vim:ft=zsh
 # vim:ft=zsh