Imported Upstream version 2.5.2p1

[debian/amanda] / amplot / amplot.sh.in

diff --git a/amplot/amplot.sh.in b/amplot/amplot.sh.in
index 05a6ce8166829f7178d014fbaea949205cbd3270..f771e7456f55d2a3e224ff90b0fa79a8dd660574 100644 (file)
--- a/amplot/amplot.sh.in
+++ b/amplot/amplot.sh.in
@@ -47,20 +47,82 @@ PATH=$sbindir:$libexecdir:/usr/bin:/bin:/usr/sbin:/sbin:/usr/ucb:$PATH
 export PATH
 
 AWK=@AWK@
-AVARFLAG=@AWK_VAR_ASSIGNMENT_OPT@
 GNUPLOT=@GNUPLOT@
 COMPRESS=@AMPLOT_COMPRESS@
 
+#+
+# Function to:
+#    Simplify gettext usage by allowing printf format
+#    strings for translators, use _() identifier for
+#    xgettext extraction similar to "C" usage and
+#    collapsing "printf `gettext fmt` ...", which is
+#    used everywhere, into one function.
+#-
+_() {
+       fmt="$1"
+       shift
+       printf "$fmt" $*
+}
+
+# Function to check that awk can do command-line variable
+# substitution.  If no, then exit; if yes, set $AVARFLAG
+# to the commandline switch used to introduce a variable. This
+# check used to be performed at build time in configure; it's
+# now performed at runtime.
+test_awk() {
+       local tmpfile result
+       tmpfile=`mktemp /tmp/amplot.XXXXXX`
+       echo 'BEGIN{print i; exit}' > ${tmpfile}
+       result=`$AWK -f ${tmpfile} i=xx | wc -c`
+       if test "$result" -le 1; then
+               result=`$AWK -f ${tmpfile} -v i=xx | wc -c`
+               if test "$result" -le 1; then
+                       echo "$AWK does not support command-line variable assignment; amplot cannot run" >&2
+                       rm -fr $tmpfile
+                       exit 1
+               else
+                       AVARFLAG=-v
+               fi
+       else
+               AVARFLAG=''
+       fi
+
+       rm -fr $tmpfile
+}
+
+# Function to search for gnuplot and ensure it's working.  This
+# first tries the location detected/configured when amanda was built,
+# then tries 'gnuplot', assuming it's in the user's path.  If no
+# working gnuplot executable is found, it exits with an error.  The
+# variable $GNUPLOT is set to the resulting executable.
+find_gnuplot() {
+       if test "x$GNUPLOT" = "x"; then
+               # look for it in the user's PATH
+               GNUPLOT=gnuplot
+       fi
+
+       if ${GNUPLOT} --version 2>/dev/null | grep '^gnuplot' >/dev/null; then
+               : # looks OK
+       else
+               echo "${GNUPLOT} was not found; amplot cannot run"
+               exit 1
+       fi
+}
+
+# check our environment, using functions from above
+test_awk
+find_gnuplot
+
 if [ $# -eq 0 ] ; then
-       echo "Usage: $0 [-c] [-e] [-g] [-l] [-p] [-t hours] <amdump_files.[gz,z,Z]>"
-       echo "amplot generates plot for screen with fixed dimensions"
-       echo "  -c      Compress the input amdump files after plotting"
-       echo "  -e      Extends x (time) axes if needed"
-       echo "  -g      Run gnuplot directly no postscript file generated DEFAULT"
-       echo "  -l      Landscape mode suitable for printing"
-       echo "  -p      Postscript output (color)"
-       echo "  -b      The postscipt will be b/w"
-       echo "  -t T    Set the right edge of the plot to be T hours"
+       _ 'Usage: %s [-c] [-e] [-g] [-l] [-p] [-t hours] <amdump_files.[gz,z,Z]>\n' $0
+       _ '%s generates plot for screen with fixed dimensions\n' $0
+       _ '     -c      Compress the input amdump files after plotting\n'
+       _ '     -e      Extends x (time) axes if needed\n'
+       _ '     -g      Run gnuplot directly no postscript file generated DEFAULT\n'
+       _ '     -l      Landscape mode suitable for printing\n'
+       _ '     -p      Postscript output (color)\n'
+       _ '     -b      The postscipt will be b/w\n'
+       _ '     -t T    Set the right edge of the plot to be T hours\n'
        exit 1 
 fi
 
@@ -85,7 +147,7 @@ while :; do
    -b) bw=1; shift;;
    -t)  shift
        if test "$#" -eq 0; then
-           echo "amplot: no argument for -t option" 1>&2
+           _ '%s: no argument for -t option\n' $0 1>&2
            exit 5
        fi
        maxtime="$1"; shift;;
@@ -93,7 +155,7 @@ while :; do
    esac
 done
 if [ $# -eq 0 ] ; then 
-       echo "amplot: no input files" 1>&2
+       _ '%s: no input files\n' $0 1>&2
        exit 5
 fi
 para=$para"$AVARFLAG maxtime=$maxtime"
@@ -102,14 +164,14 @@ if [ $gnuplot  -eq 1 ] ; then
        my_plot=$my_plot"p"             # use the plot prog that pauses
        plot=" -geometry 800x700+40+0" 
        para=$para"$AVARFLAG gnuplot=1 "
-       echo "Displaying graph on the screen, <CR> for next graph"
+       _ "Displaying graph on the screen, <CR> for next graph"
 
        if [ "$paper" -eq 1 ] ; then
-               echo "amplot: -l requires -p flag at the same time" 1>&2
+               _ '%s: -l requires -p flag at the same time\n' $0 1>&2
                exit 6 
        fi
        if [ "$bw" -eq 1 ] ; then
-               echo "amplot: -b requires -p flag at the same time" 1>&2
+               _ '%s: -b requires -p flag at the same time\n' $0 1>&2
                exit 6 
        fi
 fi
@@ -129,7 +191,7 @@ do
        if [ -f "$f" ] ; then           # found file 
                 disp=`$AWK -f $libexecdir/amcat.awk $AVARFLAG f="$f"`
                if [ -z "$disp" ] ; then 
-                       echo "Do not know how to [gz|z]cat this file"
+                       _ 'Do not know how to [gz|z]cat this file\n'
                else
                        /bin/rm -f $tmp_files 
                        $disp "$f" | $AWK -f $libexecdir/amplot.awk $para
@@ -139,7 +201,7 @@ do
                        fi
                fi
        else                            # check if file has been compressed
-               echo "No such file $i or $i.*[zZ]"
+               _ 'No such file %s or %s\n' "$i" "$i.*[zZ]"
        fi
 done
 
@@ -147,7 +209,7 @@ done
 
 if [ "$list" != "" ] ; then            # now compress the files we worked on
 # comment out next line if you do not want compression at the end
-       echo "Compressing $list"
+       _ 'Compressing %s\n' "$list"
        $COMPRESS $list
 fi
 exit 0