Changeset 9199a13 for common/progress_bar.sh

Timestamp:

06/10/2006 04:48:25 PM (18 years ago)

Author:

Manuel Canales Esparcia <manuel@…>

Branches:

experimental

Children:

966cb20

Parents:

e35e794

Message:

Merged r2754:2768 from trunk.

File:

• common/progress_bar.sh (modified) (1 diff)

common/progress_bar.sh

@@ -5 +5 @@
 set -e
 
+# Be sure that we know the taget name
 [[ -z $1 ]] && exit
+TARGET=$1  # Remember the target build we are looking for
 
-if [ ! -f $1 ] ; then
-  while fuser -v . 2>&1 | grep make >/dev/null ; do
-    echo -n "."
-    sleep 1
-    [[ -f $1 ]] && exit
-  done
-fi
+declare -r  CSI=$'\e['  # DEC terminology, Control Sequence Introducer
+declare -r  CURSOR_OFF=${CSI}$'?25l'
+declare -r  CURSOR_ON=${CSI}$'?25h'
+declare -r  ERASE_LINE=${CSI}$'2K'
+declare -r  FRAME_OPEN=${CSI}$'2G['
+declare -r  FRAME_CLOSE=${CSI}$'63G]'
+declare -r  TS_POSITION=${CSI}$'65G'
+declare -a  RESET_LINE=${CURSOR_OFF}${ERASE_LINE}${FRAME_OPEN}${FRAME_CLOSE}
+
+declare -a  GRAPHIC_STR="| / - \\ + "
+declare -i  SEC=0  # Seconds accumulator
+declare -i  PREV_SEC=0
+
+
+write_or_exit() {
+    # make has been killed or failed or run to completion, leave
+  if ! fuser -v . 2>&1 | grep make >/dev/null ; then
+     echo -n "${CURSOR_ON}" && exit
+  fi
+    # Target build complete, leave.
+  [[ -f ${TARGET} ]] && echo -n "${CURSOR_ON}" && exit
+    # It is safe to write to the screen
+  echo -n "$1"
+}
+
+  # initialize screen
+write_or_exit "${RESET_LINE}${TS_POSITION}0 min. 0 sec. "
+
+  # loop forever..
+while true ; do
+
+      # Loop through the animation string
+    for GRAPHIC_CHAR in ${GRAPHIC_STR} ; do
+      write_or_exit "${CSI}$((SEC + 3))G${GRAPHIC_CHAR}"
+      sleep .12 # This value MUST be less than .2 seconds.
+    done
+
+      # A BASH internal variable, the number of seconds the script
+      # has been running. modulo convert to 0-59
+    SEC=$(($SECONDS % 60))
+
+      # Detect rollover of the seconds.
+    (( PREV_SEC > SEC )) && write_or_exit "${RESET_LINE}"
+    (( PREV_SEC = SEC ))
+
+      # Display the accumulated time. div minutes.. modulo seconds.
+    write_or_exit "${TS_POSITION}$(($SECONDS / 60)) min. $SEC sec. "
+done
+
+exit