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bargraph
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# $Id: bargraph 1.5 00/01/31 15:29:41-08:00 [email protected] $
eval 'exec perl -Ss $0 "$@"'
if 0;
# A simple bargraph preprocessor for GNU pic / troff package.
# Hacked into existence by Larry McVoy ([email protected] now [email protected]).
# Copyright (c) 1994 Larry McVoy. GPLed software.
#
# TODO
# Make this work with sideways graphs.
#
# Input format is:
#
# 3 foo bar
# 9 bigger foo
# "Silly example
#
# and output is
#
# bigger
# foo
# +----------+
# | |
# foo | |
# bar | |
# +----------+ | |
# | | | |
# +----------+ +----------+
# -------------------------------
# 3 9
#
# Silly example
#
# Input options:
# specifier value default
# %ps <point size> 10
# %ft <font> HB
# %labelgap <space in inches between fill labels> 1.5
# %xsize <size of graph width in inches> 7
# %ysize <size of graph height in inches> 6
# %Title n|s <Bargraph title> none
# %titleplus <increase in points of titlesize> 0
# %label%d <label name> none
# %boxpercent <100% means columns touch> 75
# %worse up|down n|w|e|s|nw|ne|sw|se - idiot arrow
# %better up|down n|w|e|s|nw|ne|sw|se - idiot arrow
# %fakemax <pretend one data point was this big>
#
# The data can be optionally followed by a %fill%d that gets turned into
# the fill value (darkness) for that bar of the bar graph. The default
# fill value is whatever pic defaults to.
# The %label control is used to provide a legend for the different fill
# values.
#
# Command line options:
#
# -big make the x/y defaults be 7.5 inches, crank up title size, and
# don't put a spacer at the top.
# -nobox do not put an outline box around the bargraph.
#
# -sideways
# do the bars towards the right.
#
# Much thanks to James Clark for providing such a nice replacement for
# the Unix troff package.
@lines = <>; # sluuuuuuuuuuuurp
$titleplus = 2;
$bottomplus = 0;
$fill = "fillval";
$SP = ".sp 1i";
$PO = "0i";
# All of these can be set in the graph with %xxx value
$ps = 10;
$ft = "CB";
$xsize = 4;
$ysize = 6;
$boxpercent = 75;
$labelgap = 1.5;
if ($nobox) {
$invis = "invis";
} else {
$invis = "";
}
if ($big) {
$slide = 0;
$xsize = 7.5;
$ysize = 7.5;
$SP = "";
$titleplus = 4;
$bottomplus = 2;
# XXX - you may need to screw with this.
$xsize -= 3.75 if ($sideways);
}
if ($slide) {
$big = 0;
$xsize = 6.5;
$ysize = 4.20;
$SP = ".sp .75i";
$PO = ".23i";
$titleplus = 2;
$bottomplus = 0;
# XXX - you may need to screw with this.
$xsize -= 2.2 if ($sideways);
}
$vs = $ps + 1;
# Calculate max to autosize the graph.
foreach $_ (@lines) {
next if /^\s*#/;
next if /^\s*$/;
if (/^\s*"/) {
($title = $_) =~ s/\s*"//;
chop($title);
push(@title, "\"\\s+$titleplus$title\\s0\"");
next;
}
if (/^\s*%/) {
&control(0);
push(@control, $_);
next;
}
@_ = split;
if (!defined $maxdata) {
$maxdata = $_[0];
} else {
$maxdata = $_[0] if ($maxdata < $_[0]);
}
push(@data, $_);
}
foreach $_ (@control) {
&control(1);
}
$n = $#data + 1;
$tps = $ps + $titleplus;
$tvs = int($tps * 1.2);
print <<EOF;
$SP
.po $PO
.ft $ft
.ps $ps
.vs $tvs
.ce 100
EOF
foreach $_ (@title_n) {
print;
}
# Spit out the pic stuff.
# The idea here is to spit the variables and let pic do most of the math.
# This allows tweeking of the output by hand.
print <<EOF;
.ce 0
.vs
.PS
.ps $ps
.vs $vs
[
# Variables, tweek these.
fillval = .12 # default fill value boxes
xsize = $xsize # width of the graph
ysize = $ysize # height of the graph
n = $n
boxpercent = $boxpercent / 100
gap = xsize / n * (1 - boxpercent)
maxdata = $maxdata
yscale = ysize / maxdata
xscale = xsize / maxdata
# Draw the graph borders
O: box invis ht ysize wid xsize
EOF
# line thick 2 from O.sw - (0, .1) to O.se - (0, .1)
#foreach $_ (@control) {
# &control(1);
#}
# boxwid = xsize / n * boxpercent
if ($sideways) {
print "boxht = ysize / n * boxpercent\n";
# Each data point.
for ($i = 0; $i <= $#data; $i++) {
$_ = $data[$i];
@_ = &getfill;
print "box fill $fill wid $_[0] * xscale " .
"with .nw at O.nw - (0, gap /2 + $i * (ysize/n))\n";
$value = shift(@_);
# XXXXXXX
if ($_[$#_] =~ /secs/) {
#print "\"@_\" ljust at last box.e + .1,0\n";
$units = pop(@_);
$each = pop(@_);
print "\"\\s+1$value\\s0, @_,\\ \\s+1$each $units\\s0\" ljust at last box.e + .1,0\n";
} else {
print "\"\\s+2$value\\s0 @_\" ljust at last box.e + .1,0\n";
}
}
} else {
print "boxwid = xsize / n * boxpercent\n";
# Each data point.
for ($i = 0; $i <= $#data; $i++) {
$_ = $data[$i];
@_ = &getfill;
print "box fill $fill ht $_[0] * yscale " .
"with .sw at O.sw + (gap /2 + $i * (xsize/n), 0)\n";
$value = shift(@_);
@_ = &fmt(@_);
#warn "V=$value\nT=@_\n";
# Make the bar titles
for ($j = $#_; $j >= 0; $j--) {
print "\t\"$_[$j]\" at last box.n + (0, .05 + .12 * $j)\n";
}
print "\t\"\\s+$bottomplus$value\\s0\" at last box.s - (0, .30)\n";
}
}
# Labels, if any
if ($#labels > -1) {
print "\n# Labels.\n";
print "[\n boxwid = .35; boxht = .18; y = .10; x = -.03; ";
print "labelgap = $labelgap\n";
$first = 1;
foreach $_ (@labels) {
print " [ B: box fill $_[0]; ";
shift(@_);
print "\"@_\" ljust at B.e + (y, x) ]";
if ($first == 1) {
$first = 0;
print "\n";
} else {
print " \\\n\twith .w at last [].e + (labelgap, 0)\n";
}
}
print "] with .nw at O.sw - (0, .6)\n";
}
$invis = "invis" if $sideways;
print <<EOF;
]
box $invis wid last [].wid + .5 ht last [].ht + .5 with .nw at last [].nw + (-.25, .25)
move to last [].nw + 0,.25
line thick 2 right 7
move to last [].sw - 0,.25
line thick 2 right 7
.PE
.ft
.ps
.vs
.po
EOF
print <<EOF;
.po .5i
.ft $ft
.ps $ps
.vs $tvs
.sp .5
.ce 100
EOF
foreach $_ (@title_s) {
print;
}
print <<EOF;
.po
.ft
.ps
.vs
.ce 0
EOF
exit 0;
sub fmt
{
local(@args);
local(@ret);
# XXX - this assumes that # is not used anywhere else in the
# label line.
$_ = "@_";
s/\\ /#/g;
@args = split;
foreach $_ (@args) {
s/#/ /g;
}
$len = 0;
foreach $_ (@args) {
$len = length($_) if (length($_) > $len);
}
$len += 2;
$word = shift(@args);
while ($#args > -1) {
if (length($word) + length($args[0]) < $len) {
$word .= " $args[0]";
shift(@args);
} else {
push(@ret, $word);
$word = shift(@args);
}
}
push(@ret, $word);
reverse(@ret);
}
# Eat some control information
#
sub control
{
local($pass) = $_[0];
if ($pass == 0) {
s/.*%//;
chop;
}
@_ = split;
if ($_[0] =~ /[Ww]orse$/ || $_[0] =~ /[Bb]etter$/) {
return if ($pass == 0);
if ($#_ != 2) {
die "bad control: $_\n";
return;
}
($label, $dir, $where) = @_;
print "\n# Idiot arrow\n";
print "[\tarrow thick 10 wid .5 ht .4 $dir 1.15\n";
print "\t\"\\s+9$label\\s0\" ";
if ($dir eq "up") {
print "at last arrow.s - (0, .25)\n";
} elsif ($dir eq "down") {
print "at last arrow.n + (0, .25)\n";
} else {
die "bad control: $_\n";
}
print "] with .$where at O.$where ";
if ($where eq "n") {
print "- (0, .5)\n";
} elsif ($where eq "ne") {
print "- (.5, .5)\n";
} elsif ($where eq "e") {
print "- (.5, 0)\n";
} elsif ($where eq "se") {
print "- (.5, -.5)\n";
} elsif ($where eq "s") {
print "+ (0, .5)\n";
} elsif ($where eq "sw") {
print "+ (.5, .5)\n";
} elsif ($where eq "w") {
print "+ (.5, 0)\n";
} elsif ($where eq "nw") {
print "+ (.5, -.5)\n";
} else {
die "bad control: $_\n";
}
print "\n";
} elsif ($_[0] =~ /Title/) {
# XXX - I haven't fixed this for -sideways
return if ($pass == 0);
if ($_[1] eq "n") {
shift(@_); shift(@_);
push(@title_n, "\\s+$titleplus@_\\s0\n");
} elsif ($_[1] eq "s") {
shift(@_); shift(@_);
push(@title_s, "\\s+$titleplus@_\\s0\n");
} else {
die "bad control: $_\n";
}
} elsif ($_[0] =~ /ps/) {
$ps = $_[1];
} elsif ($_[0] =~ /ft/) {
$ft = $_[1];
} elsif ($_[0] =~ /xsize/) {
$xsize = $_[1];
} elsif ($_[0] =~ /ysize/) {
$ysize = $_[1];
} elsif ($_[0] =~ /titleplus/) {
$titleplus = $_[1];
} elsif ($_[0] =~ /boxpercent/) {
$boxpercent = $_[1];
} elsif ($_[0] =~ /labelgap/) {
$labelgap = $_[1];
} elsif ($_[0] =~ /label/) { # has to be after labelgap
return if ($pass == 0);
$_[0] =~ s/label//;
if (length($_[0]) > 0) {
$fill = $_[0];
} else {
$fill = "fillval";
}
push(@labels, "@_");
} elsif ($_[0] =~ /fakemax/) {
if (!defined $maxdata) {
$maxdata = $_[1];
} else {
$maxdata = $_[1] if ($maxdata < $_[1]);
}
} else {
die "bad control: $_\n";
}
}
# Look for a %fill[val], eat it, and set $fill
sub getfill
{
local (@line);
if (/%fill/) {
@_ = split;
foreach $_ (@_) {
if (/%fill/) {
s/%fill//;
if (length($_) > 0) {
$fill = $_;
} else {
$fill = "fillval";
}
} else {
push(@line, $_);
}
}
} else {
$fill = "fillval";
@line = split;
}
@line;
}