From: Simon Ruderich <simon@ruderich.org>
Date: Thu, 20 Dec 2012 16:54:04 +0000 (+0100)
Subject: zsh/rc: Display running time for long running processes.
X-Git-Url: https://ruderich.org/simon/gitweb/?p=config%2Fdotfiles.git;a=commitdiff_plain;h=b6ec7a5cd9626062f51f88437b7b4ee4323e85a2

zsh/rc: Display running time for long running processes.

Also send a bell to the terminal when the process is done.
---

diff --git a/zsh/rc b/zsh/rc
index aa195f2..c3fd79f 100644
--- a/zsh/rc
+++ b/zsh/rc
@@ -265,6 +265,46 @@ else
     RUN_VCS_INFO=
 fi
 
+typeset -a longrun_data
+longrun_data=()
+# Display runtime in seconds for long running programs (> 60 seconds) and send
+# a bell to notify me.
+longrun_preexec() {
+    # Don't track the time for certain (possible) long running processes which
+    # need no automatic notification.
+    for ignore in elinks man mutt vim; do
+        case $3 in
+            $ignore | $ignore\ *)
+                longrun_data=()
+                return
+                ;;
+        esac
+    done
+
+    longrun_data=("$3" $EPOCHSECONDS)
+}
+longrun_precmd() {
+    # No previous timestamp available or disabled for this command, ignore.
+    if [[ -z $longrun_data ]]; then
+        return
+    fi
+
+    local difference=$(( EPOCHSECONDS - longrun_data[2] ))
+    if [[ $difference -gt 60 ]]; then
+        echo
+        echo -n "${fg[yellow]}"
+        echo -n "~> ${(V)longrun_data[1]} took $difference seconds."
+        echo -n "${fg[default]}"
+        echo    "\a" # send bell
+    fi
+
+    # Clear status. Prevents displaying old status information when pressing
+    # enter with an empty command line.
+    longrun_data=()
+}
+preexec_functions+=(longrun_preexec)
+precmd_functions+=(longrun_precmd)
+
 # Set the prompt. A two line prompt is used. On the top left the current
 # working directory is displayed, on the right vcs_info (if available) and the
 # current time in hex. On the bottom left current user name and host is shown,