1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
#!/usr/bin/perl
package IkiWiki::Plugin::sparkline;
use warnings;
use strict;
use IkiWiki 3.00;
use IPC::Open2;
my $match_num=qr/[-+]?[0-9]+(?:\.[0-9]+)?/;
my %locmap=(
top => 'TEXT_TOP',
right => 'TEXT_RIGHT',
bottom => 'TEXT_BOTTOM',
left => 'TEXT_LEFT',
);
sub import {
hook(type => "getsetup", id => "sparkline", call => \&getsetup);
hook(type => "preprocess", id => "sparkline", call => \&preprocess);
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => undef,
section => "widget",
},
}
sub preprocess (@) {
my %params=@_;
my $php;
my $style=(exists $params{style} && $params{style} eq "bar") ? "Bar" : "Line";
$php=qq{<?php
require_once('sparkline/Sparkline_$style.php');
\$sparkline = new Sparkline_$style();
\$sparkline->SetDebugLevel(DEBUG_NONE);
};
foreach my $param (qw{BarWidth BarSpacing YMin YMaz}) {
if (exists $params{lc($param)}) {
$php.=qq{\$sparkline->Set$param(}.int($params{lc($param)}).qq{);\n};
}
}
my $c=0;
while (@_) {
my $key=shift;
my $value=shift;
if ($key=~/^($match_num)(?:,($match_num))?(?:\(([a-z]+)\))?$/) {
$c++;
my ($x, $y);
if (defined $2) {
$x=$1;
$y=$2;
}
else {
$x=$c;
$y=$1;
}
if ($style eq "Bar" && defined $3) {
$php.=qq{\$sparkline->SetData($x, $y, '$3');\n};
}
else {
$php.=qq{\$sparkline->SetData($x, $y);\n};
}
}
elsif (! length $value) {
error gettext("parse error")." \"$key\"";
}
elsif ($key eq 'featurepoint') {
my ($x, $y, $color, $diameter, $text, $location)=
split(/\s*,\s*/, $value);
if (! defined $diameter || $diameter < 0) {
error gettext("invalid featurepoint diameter");
}
$x=int($x);
$y=int($y);
$color=~s/[^a-z]+//g;
$diameter=int($diameter);
$text=~s/[^-a-zA-Z0-9]+//g if defined $text;
if (defined $location) {
$location=$locmap{$location};
if (! defined $location) {
error gettext("invalid featurepoint location");
}
}
$php.=qq{\$sparkline->SetFeaturePoint($x, $y, '$color', $diameter};
$php.=qq{, '$text'} if defined $text;
$php.=qq{, $location} if defined $location;
$php.=qq{);\n};
}
}
if ($c eq 0) {
error gettext("missing values");
}
my $height=int($params{height} || 20);
if ($height < 2 || $height > 100) {
error gettext("invalid height value");
}
if ($style eq "Bar") {
$php.=qq{\$sparkline->Render($height);\n};
}
else {
if (! exists $params{width}) {
error gettext("missing width parameter");
}
my $width=int($params{width});
if ($width < 2 || $width > 1024) {
error gettext("invalid width value");
}
$php.=qq{\$sparkline->RenderResampled($width, $height);\n};
}
$php.=qq{\$sparkline->Output();\n?>\n};
# Use the sha1 of the php code that generates the sparkline as
# the base for its filename.
eval q{use Digest::SHA};
error($@) if $@;
my $fn=$params{page}."/sparkline-".
IkiWiki::possibly_foolish_untaint(Digest::SHA::sha1_hex($php)).
".png";
will_render($params{page}, $fn);
if (! -e "$config{destdir}/$fn") {
my $pid;
my $sigpipe=0;
$SIG{PIPE}=sub { $sigpipe=1 };
$pid=open2(*IN, *OUT, "php");
# open2 doesn't respect "use open ':utf8'"
binmode (OUT, ':utf8');
print OUT $php;
close OUT;
my $png;
{
local $/=undef;
$png=<IN>;
}
close IN;
waitpid $pid, 0;
$SIG{PIPE}="DEFAULT";
if ($sigpipe || ! defined $png) {
error gettext("failed to run php");
}
if (! $params{preview}) {
writefile($fn, $config{destdir}, $png, 1);
}
else {
# in preview mode, embed the image in a data uri
# to avoid temp file clutter
eval q{use MIME::Base64};
error($@) if $@;
return "<img src=\"data:image/png;base64,".
encode_base64($png)."\" />";
}
}
return '<img src="'.urlto($fn, $params{destpage}).'" alt="graph" />';
}
1
|