find-first-fail: Implemented -e end-value.
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Ole Tange
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1f068af082
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@ -11,7 +11,7 @@ fragment (or numeric argument)
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=head1 SYNOPSIS
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B<find-first-fail> [-2] [-q] [-s I<start>] [-v] [-V] I<command>
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B<find-first-fail> [-2] [-q] [-s I<start>] [-e I<end>] [-v] [-V] I<command>
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B<find-first-fail> -f I<inputfile> [-s I<start>] [-q] [-v] [-V] I<command>
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@ -57,7 +57,15 @@ Quiet. Ignore output from I<command>.
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=item B<-s I<start>>
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Start searching from the value I<start>. Normally searching will start from the value 1.
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Start searching from the value I<start>. Normally searching will start
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from the value 1.
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=item B<-e I<end>>
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End searching at the value I<end>. Normally this value will be
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determined automatically, but you can limit the search to be below
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the value I<end>.
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=item B<-v>
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@ -116,7 +124,7 @@ Complex commands can also be run:
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=head2 Find the second limit of a program
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Assume you have a program that is OK in the range 123..12345. How do
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you find the limits?
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you find those limits?
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myprog() { perl -e '$a=shift;if($a <= 123) { exit 0; }
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else { exit ($a <= 12345) }' "$@"; }
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@ -231,7 +239,7 @@ find-first-fail() {
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}
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_find_in_arg() {
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# If function(1) = false: run 'not function()' instead
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# If function($start) == false: run 'not function()' instead
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local not
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if _run "$start" "$start" "?" "$@" ; then
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not=''
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@ -239,19 +247,25 @@ find-first-fail() {
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not='!'
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fi
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# exponential search for the first value that is false
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# low = previous value (function($low) == true)
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# high = low * 2 (function($high) == false)
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local high=$(( $start*2 ))
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local low=$start
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while _run $low $high "?" "$@" ; do
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low=$high
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high=$(( $high*2 ))
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if [ $high -gt 4611686018427387900 ] ; then
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echo "find-first-fail: Error: exit value does not change of '$@'" >&2
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return
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fi
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done
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local high
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if [ -z "$end" ] ; then
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# No end value given with -e:
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# exponential search for the first value that is false
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# low = previous value (function($low) == true)
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# high = low * 2 (function($high) == false)
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high=$(( $start*2 ))
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while _run $low $high "?" "$@" ; do
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low=$high
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high=$(( $high*2 ))
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if [ $high -gt 4611686018427387900 ] ; then
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echo "find-first-fail: Error: exit value does not change of '$@'" >&2
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return
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fi
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done
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else
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high=$end
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fi
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# low = tested good
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# high = tested fail
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@ -366,8 +380,8 @@ find-first-fail() {
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version() {
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cat <<EOF
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find-first-fail 20201222
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Copyright (C) 2020 Ole Tange, http://ole.tange.dk
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find-first-fail 20210109
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Copyright (C) 2020-2021 Ole Tange, http://ole.tange.dk
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License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
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This is free software: you are free to change and redistribute it.
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find-first-fail comes with no warranty.
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@ -385,12 +399,13 @@ EOF
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unset OPTIND
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# Parse and remove options
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while getopts "2f:qs:vV" options; do
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while getopts "2e:f:qs:vV" options; do
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case "${options}" in
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(2) opt2=true;;
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(f) optf=true; inputfile="$OPTARG";;
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(q) quiet=">/dev/null 2>/dev/null";;
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(s) start="$OPTARG";;
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(e) end="$OPTARG";;
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(v) verbose=true;;
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(V) version; exit 0;;
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(-) break;;
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@ -97,6 +97,14 @@ test_file_start_middle_end() {
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find-first-fail -s1 -f "$tmp" myparser
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}
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test_end() {
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echo 'Find 12'
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myprog() { perl -e 'exit (shift > 12)' "$@"; }
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export -f myprog
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find-first-fail -v -e 13 myprog
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find-first-fail -v -s 11 -e 15 myprog
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}
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export -f $(compgen -A function | grep test_)
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compgen -A function | grep test_ | LC_ALL=C sort |
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parallel --timeout 1000% --tag -k --joblog /tmp/jl-`basename $0` '{} 2>&1'
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@ -109,34 +109,36 @@ input.csv:
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cat input.csv | plotpipe
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=head1 EXAMPLE
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=head1 EXAMPLE: No x column
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input.csv:
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#Title line 1
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#This is title line 2
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X axis header,Values 1,Values 2
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1,28,32
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2,12,35
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3,3.5,3.5
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#Plot with no x-value column
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Values 1,Values 2
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28,32
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12,35
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3.5,3.5
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cat input.csv | plotpipe
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cat input.csv | plotpipe --nox
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=head1 EXAMPLE: Log
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input.csv:
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#Plot with log y
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2^n 3^n 4^n
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1 1 1
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2 3 4
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4 9 16
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8 27 64
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cat input.csv | plotpipe --nox --logy
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=head1 LIMITS
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B<plotpipe> is limited by Gnuplot.
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13x113425 = 28 MB
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43x13203 = 10 MB
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43x24068 = 5.8 MB
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10x315636
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Gnuplot will complain:
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line -1: warning: Cannot find or open file "/tmp/plotXXXXX"
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if the input is too big. The plot will then be incomplete.
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=head1 AUTHOR
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