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BBBikeUtil.pm
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BBBikeUtil.pm
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# -*- perl -*-
#
# Author: Slaven Rezic
#
# Copyright (C) 1998-2016,2018,2020,2023,2024 Slaven Rezic. All rights reserved.
# This package is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
# Mail: [email protected]
# WWW: http://bbbike.de
#
package BBBikeUtil;
$VERSION = 1.43;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK);
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(is_in_path is_in_path_cached catfile file_name_is_absolute
int_round sqr s2hm s2ms h2hm m2km
pi deg2rad rad2deg schnittwinkel float_prec
cp850_iso iso_cp850 nil
kmh2ms
STAT_MODTIME);
@EXPORT_OK = qw(min max first sum ceil ms2kmh clone bbbike_root bbbike_aux_dir
s2hms s2hm_or_s save_pwd save_pwd2 uri_with_query
module_path module_exists);
use constant STAT_MODTIME => 9;
# REPO BEGIN
# REPO NAME is_in_path /home/e/eserte/src/repository
# REPO MD5 ccab6618d5af7a1e314eb8e0e448ff2c
sub is_in_path {
my($prog) = @_;
if (file_name_is_absolute($prog)) {
if ($^O eq 'MSWin32') {
return $prog if (-f $prog && -x $prog);
return "$prog.bat" if (-f "$prog.bat" && -x "$prog.bat");
return "$prog.com" if (-f "$prog.com" && -x "$prog.com");
return "$prog.exe" if (-f "$prog.exe" && -x "$prog.exe");
return "$prog.cmd" if (-f "$prog.cmd" && -x "$prog.cmd");
} else {
return $prog if -f $prog and -x $prog;
}
}
require Config;
%Config::Config = %Config::Config if 0; # cease -w
my $sep = $Config::Config{'path_sep'} || ':';
foreach (split(/$sep/o, $ENV{PATH})) {
if ($^O eq 'MSWin32') {
# maybe use $ENV{PATHEXT} like maybe_command in ExtUtils/MM_Win32.pm?
return "$_\\$prog" if (-f "$_\\$prog" && -x "$_\\$prog");
return "$_\\$prog.bat" if (-f "$_\\$prog.bat" && -x "$_\\$prog.bat");
return "$_\\$prog.com" if (-f "$_\\$prog.com" && -x "$_\\$prog.com");
return "$_\\$prog.exe" if (-f "$_\\$prog.exe" && -x "$_\\$prog.exe");
return "$_\\$prog.cmd" if (-f "$_\\$prog.cmd" && -x "$_\\$prog.cmd");
} else {
return "$_/$prog" if (-x "$_/$prog" && !-d "$_/$prog");
}
}
undef;
}
# REPO END
use vars qw(%is_in_path_cache);
sub is_in_path_cached {
my $prog = shift;
if (exists $is_in_path_cache{$prog}) {
return $is_in_path_cache{$prog};
}
my $res = is_in_path($prog);
$is_in_path_cache{$prog} = $res;
$res;
}
sub catfile {
my(@args) = @_;
my $path;
eval {
require File::Spec;
$path = File::Spec->catfile(@args);
};
if ($@) {
$path = join("/", @args);
}
$path;
}
# REPO BEGIN
# REPO NAME file_name_is_absolute /home/e/eserte/src/repository
# REPO MD5 47355e35bcf03edac9ea12c6f8fff9a3
sub file_name_is_absolute {
my $file = shift;
my $r;
eval {
require File::Spec;
$r = File::Spec->file_name_is_absolute($file);
};
if ($@) {
if ($^O eq 'MSWin32') {
$r = ($file =~ m;^([a-z]:(/|\\)|\\\\|//);i);
} else {
$r = ($file =~ m|^/|);
}
}
$r;
}
# REPO END
sub int_round { int($_[0]+0.5) }
# Quadrat
sub sqr {
$_[0] * $_[0];
}
# Sekunden in HH:MM-Schreibweise
sub s2hm {
my $s = shift;
sprintf "%d:%02d", $s/3600, ($s%3600)/60;
}
# Sekunden in HH:MM:SS-Schreibweise
sub s2hms {
my $s = shift;
sprintf "%d:%02d:%02d", $s/3600, ($s%3600)/60, $s%60;
}
# Sekunden in MM:SS-Schreibweise
sub s2ms {
my $s = shift;
sprintf "%d:%02d", $s/60, int($s%60);
}
# seconds as "HH:MM h" or "SS sec"
sub s2hm_or_s {
my $s = shift;
if ($s < 1 || $s >= 60) {
s2hm($s) . ' h';
} else {
int($s%60) . ' sec';
}
}
# gebrochene Stunden in HH:MM-Schreibweise
sub h2hm {
my $s = shift;
sprintf "%d:%02d", $s, 60*($s - int($s));
}
# Meter in Kilometer umwandeln. $dig gibt die Anzahl der
# Nachkommastellen (Default: 1) an. Mit $sigdig (optional) kann die
# Anzahl der signifikaten Nachkommastellen angegeben werden (um
# Scheingenauigkeiten zu vermeiden): Beispiel m2km(1234,3,2) => 1.230.
# Dabei wird nicht gerundet. $sigdig wird nicht verwendet, wenn
# dadurch 0.000 als Ergebnis herauskommen würde.
sub m2km {
my($s, $dig, $sigdig) = @_;
return 0 unless $s =~ /\d/;
$dig = 1 unless defined $dig;
my $r = sprintf "%." . $dig . "f", $s/1000;
if (defined $sigdig) {
if ($sigdig == 2 && $s < 10) {
# do nothing
} elsif ($sigdig == 1 && $s < 100) {
# do nothing
} else {
$r =~ s/\.(\d{$sigdig})(.*)/".$1" . ("0"x length($2))/e;
}
}
$r . " km";
}
sub kmh2ms { $_[0]/3.6 }
sub ms2kmh { $_[0]*3.6 }
# damit ich nicht Math::Trig und Math::Complex laden muß
sub pi () { 4 * atan2(1, 1) } # 3.141592653
sub deg2rad { ($_[0]*pi)/180 }
sub rad2deg { ($_[0]*180)/pi }
# Calculate intersecting angle
# In: $p1(x|y) and $p2(x|y): exterior points
# $pm(x|y): middle point (intersection point)
# Out: (angle in radians, direction l or r)
# may return (undef, undef) in case there's no angle available (e.g.
# if $p1==$pm or $p2==$pm)
# See also Strassen::Util::abbiegen for a very similar function.
sub schnittwinkel {
my($p1x, $p1y, $pmx, $pmy, $p2x, $p2y) = @_;
return (pi,'l') if $p1x==$p2x && $p1y==$p2y; # avoid nan
my $acos;
# XXX do not duplicate code (Strassen::Util)
if (!eval { require POSIX }) {
# from Math::Complex
$acos = sub {
my $z = $_[0];
return CORE::atan2(CORE::sqrt(1-$z*$z), $z) if (! ref $z) && CORE::abs($z) <= 1;
warn "Fallback to Math::Trig::acos because of $z\n";
require Math::Trig;
Math::Trig::acos($z);
};
} else {
$acos = \&POSIX::acos;
}
my $x1 = $pmx-$p1x;
my $y1 = $pmy-$p1y;
my $x2 = $p2x-$pmx;
my $y2 = $p2y-$pmy;
my $richtung = ($x1*$y2-$y1*$x2 > 0 ? 'l' : 'r');
my $winkel = 0;
my $acos_arg = eval {
($x1*$x2+$y1*$y2) /
(sqrt(sqr($x1)+sqr($y1)) *
sqrt(sqr($x2)+sqr($y2)));
};
if ($@) {
return (undef, undef);
}
# protect from floating point inaccuracies
if ($acos_arg > 1) { $acos_arg = 1 }
elsif ($acos_arg < -1) { $acos_arg = -1 }
eval {
$winkel = &$acos($acos_arg);
};
($winkel, $richtung);
}
sub float_prec {
my($float, $prec) = @_;
no locale;
sprintf "%.${prec}f", $float;
}
sub ceil {
my($val) = @_;
require POSIX;
POSIX::ceil($val);
}
# Zeichensatz-Konvertierungen
sub cp850_iso {
my $s = shift;
$s =~ tr/\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377/\307\374\351\342\344\340\345\347\352\353\350\357\356\354\304\305\311\346\306\364\366\362\373\371\377\326\334\370\243\330\327F\341\355\363\372\361\321\252\272\277\256\254\275\274\241\253\273\.\:\?\|\+\301\302\300\251\+\|\+\+\242\245\+\+\+\+\+\-\+\343\303\+\+\+\+\+\=\+\244\360\320\312\313\310i\315\316\317\+\+FL\246\314T\323\337\324\322\365\325\265\336\376\332\333\331\375\335\-\264\255\261\=\276\266\247\367\270\260\250\'\271\263\262f\240/;
$s;
}
sub iso_cp850 {
my $s = shift;
$s =~ tr/\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377/\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \377\255\275\234\317\276\335\365\371\270\246\256\252\360\251\47\370\361\375\374\357\346\364\56\47\373\247\257\254\253\363\250\267\265\266\307\216\217\222\200\324\220\322\323\336\326\327\330\321\245\343\340\342\345\231\236\235\353\351\352\232\355\347\341\205\240\203\306\204\206\221\207\212\202\210\211\215\241\214\213\320\244\225\242\223\344\224\366\233\227\243\226\201\354\350\230/;
$s;
}
# keine Zeichensatz-Konvertierung
sub nil { $_[0] }
{
my $BBBIKE_ROOT;
sub bbbike_root {
if (!defined $BBBIKE_ROOT) {
require File::Basename;
require Cwd;
$BBBIKE_ROOT = Cwd::realpath(File::Basename::dirname(__FILE__));
}
$BBBIKE_ROOT;
}
}
{
my $BBBIKE_AUX_DIR;
sub bbbike_aux_dir { # return undef if there's no bbbike-aux
if (!defined $BBBIKE_AUX_DIR) {
TRY: {
for my $candidate (bbbike_root . '/../bbbike-aux',
"$ENV{HOME}/src/bbbike-aux",
) {
if (-d $candidate) {
$BBBIKE_AUX_DIR = $candidate;
last TRY;
}
}
}
}
$BBBIKE_AUX_DIR;
}
}
BEGIN {
if (eval { require List::Util; 1 }) {
*min = \&List::Util::min;
*max = \&List::Util::max;
*first = \&List::Util::first;
*sum = \&List::Util::sum;
} else {
*min = sub {
my $min;
for (@_) {
$min = $_ if (!defined $min || $min > $_);
}
$min;
};
*max = sub {
my $max;
for (@_) {
$max = $_ if (!defined $max || $max < $_);
}
$max;
};
*first = sub (&@) {
my $code = shift;
for (@_) {
return $_ if &{$code}();
}
undef;
};
*sum = sub (@) {
my $sum = shift;
for (1..$#_) { $sum += $_[$_] }
$sum;
};
}
}
use vars qw(%uml $uml_keys $uml_keys_rx
%uml_german_locale $uml_german_locale_keys $uml_german_locale_keys_rx
);
BEGIN {
%uml = ('ä' => 'ae', 'ö' => 'oe', 'ü' => 'ue', 'ß' => 'ss',
'Ä' => 'Ae', 'Ö' => 'Oe', 'Ü' => 'Ue',
'é' => 'e', 'è' => 'e', 'ë' => 'e', 'á' => 'a',
'É' => 'E',
);
$uml_keys = join("",keys %uml);
$uml_keys_rx = qr{[$uml_keys]};
%uml_german_locale = ('ä' => 'a', 'ö' => 'o', 'ü' => 'u', 'ß' => 'ss',
'Ä' => 'A', 'Ö' => 'O', 'Ü' => 'U',
'é' => 'e', 'è' => 'e', 'ë' => 'e', 'á' => 'a',
'É' => 'E',
# some Polish and Czech characters appearing in the bbbike data set
# XXX better to use Text::Unidecode maybe?
"\x{00DA}" => 'U', "\x{0141}" => 'L', "\x{015A}" => 'S',
"\x{0142}" => 'l', "\x{0105}" => 'a',
"\x{011B}" => 'e', "\x{0119}" => 'e', "\x{00F3}" => 'o',
);
$uml_german_locale_keys = join("",keys %uml_german_locale);
$uml_german_locale_keys_rx = qr{[$uml_german_locale_keys]};
}
# Convert umlauts so that sorting with german locale is correct, i.e.
# ä => a, ß => ss, ...
# Also used for shortening labels for GPS devices, where converting
# a => ae is wasteful
sub umlauts_for_german_locale {
my $s = shift;
$s =~ s/($uml_german_locale_keys_rx)/$uml_german_locale{$1}/go;
$s;
}
# Convert according to german rules e.g. ä => ae
sub umlauts_to_german {
my $s = shift;
$s =~ s/($uml_keys_rx)/$uml{$1}/go;
$s;
}
# "xfrm" should resemble strxfrm(3), which is done here:
# create something which may simply be cmp'd.
sub german_locale_xfrm {
my $val = lc umlauts_for_german_locale($_[0]);
$val =~ s{[\(\)\"\.]}{}g;
$val;
}
sub sort_german {
my($arr_ref) = @_;
map { $_->[1] }
sort { $a->[0] cmp $b->[0] }
map {
[ german_locale_xfrm($_), $_]
} @$arr_ref;
}
BEGIN {
if (eval q{ use Storable 2; 1 }) { # need the ability to clone CODE items XXX determine correct Storable version
*clone = sub ($) {
my $o = shift;
local $Storable::Deparse = $Storable::Deparse = 1;
local $Storable::Eval = $Storable::Eval = 1;
Storable::dclone($o);
};
} else {
*clone = sub ($) {
my $o = shift;
require Data::Dumper;
# Seems to segfault with Sieperl 5.6.1 when cloning in show_overview_populate
eval Data::Dumper::Dumper($o);
};
}
}
# REPO BEGIN
# REPO NAME save_pwd /home/e/eserte/work/srezic-repository
# REPO MD5 0f7791cf8e3b62744d7d5cfbd9ddcb07
sub save_pwd (&) {
my $code = shift;
my $pwd;
if (1) { # test and use fchdir()
open $pwd, '.'
or undef $pwd;
if (defined $pwd) {
eval { chdir $pwd }
or undef $pwd;
}
}
if (!defined $pwd) {
require Cwd;
$pwd = Cwd::getcwd();
$pwd = undef if defined $pwd && $pwd eq ''; # might be consinstent in older Cwd versions
}
if (!defined $pwd) {
warn "No known current working directory";
}
eval {
$code->();
};
my $err = $@;
if (defined $pwd) {
chdir $pwd or die "Can't chdir back to $pwd: $!";
}
die $err if $err;
}
# REPO END
{
package BBBikeUtil::SavePwd2;
sub new {
my $pwd;
if (1) { # test and use fchdir()
open $pwd, '.'
or undef $pwd;
if (defined $pwd) {
eval { chdir $pwd }
or undef $pwd;
}
}
if (!defined $pwd) {
require Cwd;
$pwd = Cwd::getcwd();
$pwd = undef if defined $pwd && $pwd eq ''; # might be consinstent in older Cwd versions
}
if (!defined $pwd) {
warn "No known current working directory";
}
bless {cwd => $pwd}, shift;
}
sub DESTROY {
my $self = shift;
if (defined $self->{cwd}) {
chdir $self->{cwd}
or die "Can't chdir back to $self->{cwd}: $!";
}
}
}
sub save_pwd2 { BBBikeUtil::SavePwd2->new }
# Create a URL from a base $uri and an array ref of query parameters
# ($query_array).
#
# Parameters listed in raw_query (as an array ref) are appended
# unaltered to the URL generated so far using $uri and $query_array
# values. This is useful e.g. for GooglePolylineEncoding parameters,
# as characters like @ and ? are left unescaped, making the URL a lot
# smaller
sub uri_with_query {
my($uri, $query_array, %args) = @_;
my $encoding = delete $args{encoding} || 'utf-8';
my $raw_query_array = delete $args{raw_query};
die "Unhandled arguments: " . join(" ", %args) if %args;
require Encode;
my @query_array;
for my $val (@$query_array) {
push @query_array, Encode::encode($encoding, $val);
}
my $query_string;
if (!$BBBikeTest::SIMULATE_WITHOUT_URI && eval { require URI; 1 }) {
my $u = URI->new("", "http");
$u->query_form(\@query_array);
$query_string = $u->query;
if (!defined $query_string) { $query_string = '' }
$query_string =~ s{\+}{%20}g; # friendly for javascript's decodeURIComponent
} else {
require CGI;
CGI->import('-oldstyle_urls'); # global change!
my $q = CGI->new;
for(my $i=0; $i<$#query_array; $i+=2) {
$q->param($query_array[$i], $query_array[$i+1]);
}
$query_string = $q->query_string;
}
if ($raw_query_array) {
my $sep = $query_string eq '' ? '' : '&';
for(my $i=0; $i<$#$raw_query_array; $i+=2) {
$query_string .= $sep . $raw_query_array->[$i] . '=' . $raw_query_array->[$i+1];
if ($i == 0) { $sep = '&' }
}
}
if ($query_string ne '') {
$uri . '?' . $query_string;
} else {
$uri;
}
}
$BBBikeTest::SIMULATE_WITHOUT_URI = $BBBikeTest::SIMULATE_WITHOUT_URI if 0; # cease -w
# REPO BEGIN
# REPO NAME module_path /home/eserte/src/srezic-repository
# REPO MD5 ac5f3ce48a524d09d92085d12ae26e8c
# modification: %INC check
sub module_path {
my($filename) = @_;
$filename =~ s{::}{/}g;
$filename .= ".pm";
return $INC{$filename} if exists $INC{$filename};
foreach my $prefix (@INC) {
my $realfilename = "$prefix/$filename";
if (-r $realfilename) {
return $realfilename;
}
}
return undef;
}
# REPO END
sub module_exists { module_path($_[0]) ? 1 : 0 }
1;