cleaned up mkinitcpio code. abstracted run_background, follow_progress, wait_for etc. implemented warning messages. + some fixes

1 files changed, 42 insertions, 0 deletions

diff --git a/src/lib/lib-misc.sh b/src/lib/lib-misc.sh
new file mode 100644
index 0000000..bc9b150
--- /dev/null
+++ b/src/lib/lib-misc.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+
+# run a process in the background, and log it's stdout and stderr to a specific logfile
+# $1 identifier
+# $2 command (will be eval'ed)
+# $3 logfile
+run_background ()
+{
+	[ -z "$1" ] && die_error "run_background: please specify an identifier to keep track of the command!"
+	[ -z "$2" ] && die_error "run_background needs a command to execute!"
+	[ -z "$3" ] && die_error "run_background needs a logfile to redirect output to!"
+
+	( \
+		touch /tmp/$1-running
+		echo "$1 progress ..." > $3; \
+		echo >> $3; \
+		eval "$1" >>$3 2>&1
+		echo $? > /tmp/.$1-retcode
+		echo >> $3   
+		rm -f /tmp/$1-running
+	) &
+
+	sleep 2
+}
+
+
+# wait untill a process is done
+# $1 identifier
+wait_for ()
+{
+	[ -z "$1" ] && die_error "wait_for needs an identifier to known on which command to wait!"
+
+	while [ -f /tmp/$1-running ]
+	do
+		#TODO: follow_progress dialog mode = nonblocking (so check and sleep is good), cli mode (tail -f )= blocking? (so check is probably not needed as it will be done)
+		sleep 1
+	done
+
+	kill $(cat $ANSWER) #TODO: this may not work when mode = cli
+}
+