[linux.git] / scripts / sphinx-pre-install

#!/usr/bin/perl
use strict;

# Copyright (c) 2017 Mauro Carvalho Chehab <[email protected]>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

my $virtenv_dir = "sphinx_1.4";
my $requirement_file = "Documentation/sphinx/requirements.txt";

#
# Static vars
#

my %missing;
my $system_release;
my $need = 0;
my $optional = 0;
my $need_symlink = 0;
my $need_sphinx = 0;
my $install = "";

#
# Command line arguments
#

my $pdf = 1;
my $virtualenv = 1;

#
# List of required texlive packages on Fedora and OpenSuse
#

my %texlive = (
	'amsfonts.sty'       => 'texlive-amsfonts',
	'amsmath.sty'        => 'texlive-amsmath',
	'amssymb.sty'        => 'texlive-amsfonts',
	'amsthm.sty'         => 'texlive-amscls',
	'anyfontsize.sty'    => 'texlive-anyfontsize',
	'atbegshi.sty'       => 'texlive-oberdiek',
	'bm.sty'             => 'texlive-tools',
	'capt-of.sty'        => 'texlive-capt-of',
	'cmap.sty'           => 'texlive-cmap',
	'ecrm1000.tfm'       => 'texlive-ec',
	'eqparbox.sty'       => 'texlive-eqparbox',
	'eu1enc.def'         => 'texlive-euenc',
	'fancybox.sty'       => 'texlive-fancybox',
	'fancyvrb.sty'       => 'texlive-fancyvrb',
	'float.sty'          => 'texlive-float',
	'fncychap.sty'       => 'texlive-fncychap',
	'footnote.sty'       => 'texlive-mdwtools',
	'framed.sty'         => 'texlive-framed',
	'luatex85.sty'       => 'texlive-luatex85',
	'multirow.sty'       => 'texlive-multirow',
	'needspace.sty'      => 'texlive-needspace',
	'palatino.sty'       => 'texlive-psnfss',
	'parskip.sty'        => 'texlive-parskip',
	'polyglossia.sty'    => 'texlive-polyglossia',
	'tabulary.sty'       => 'texlive-tabulary',
	'threeparttable.sty' => 'texlive-threeparttable',
	'titlesec.sty'       => 'texlive-titlesec',
	'ucs.sty'            => 'texlive-ucs',
	'upquote.sty'        => 'texlive-upquote',
	'wrapfig.sty'        => 'texlive-wrapfig',
);

#
# Subroutines that checks if a feature exists
#

sub check_missing(%)
{
	my %map = %{$_[0]};

	foreach my $prog (sort keys %missing) {
		my $is_optional = $missing{$prog};

		if ($is_optional) {
			print "Warning: better to also install \"$prog\".\n";
		} else {
			print "ERROR: please install \"$prog\", otherwise, build won't work.\n";
		}
		if (defined($map{$prog})) {
			$install .= " " . $map{$prog};
		} else {
			$install .= " " . $prog;
		}
	}

	$install =~ s/^\s//;
}

sub add_package($$)
{
	my $package = shift;
	my $is_optional = shift;

	$missing{$package} = $is_optional;
	if ($is_optional) {
		$optional++;
	} else {
		$need++;
	}
}

sub check_missing_file($$$)
{
	my $file = shift;
	my $package = shift;
	my $is_optional = shift;

	return if(-e $file);

	add_package($package, $is_optional);
}

sub findprog($)
{
	foreach(split(/:/, $ENV{PATH})) {
		return "$_/$_[0]" if(-x "$_/$_[0]");
	}
}

sub check_program($$)
{
	my $prog = shift;
	my $is_optional = shift;

	return if findprog($prog);

	add_package($prog, $is_optional);
}

sub check_perl_module($$)
{
	my $prog = shift;
	my $is_optional = shift;

	my $err = system("perl -M$prog -e 1 2>/dev/null /dev/null");
	return if ($err == 0);

	add_package($prog, $is_optional);
}

sub check_python_module($$)
{
	my $prog = shift;
	my $is_optional = shift;

	my $err = system("python3 -c 'import $prog' 2>/dev/null /dev/null");
	return if ($err == 0);
	my $err = system("python -c 'import $prog' 2>/dev/null /dev/null");
	return if ($err == 0);

	add_package($prog, $is_optional);
}

sub check_rpm_missing($$)
{
	my @pkgs = @{$_[0]};
	my $is_optional = $_[1];

	foreach my $prog(@pkgs) {
		my $err = system("rpm -q '$prog' 2>/dev/null >/dev/null");
		add_package($prog, $is_optional) if ($err);
	}
}

sub check_pacman_missing($$)
{
	my @pkgs = @{$_[0]};
	my $is_optional = $_[1];

	foreach my $prog(@pkgs) {
		my $err = system("pacman -Q '$prog' 2>/dev/null >/dev/null");
		add_package($prog, $is_optional) if ($err);
	}
}

sub check_missing_tex($)
{
	my $is_optional = shift;
	my $kpsewhich = findprog("kpsewhich");

	foreach my $prog(keys %texlive) {
		my $package = $texlive{$prog};
		if (!$kpsewhich) {
			add_package($package, $is_optional);
			next;
		}
		my $file = qx($kpsewhich $prog);
		add_package($package, $is_optional) if ($file =~ /^\s*$/);
	}
}

sub check_sphinx()
{
	return if findprog("sphinx-build");

	if (findprog("sphinx-build-3")) {
		$need_symlink = 1;
		return;
	}

	if ($virtualenv) {
		my $prog = findprog("virtualenv-3");
		$prog = findprog("virtualenv-3.5") if (!$prog);

		check_program("virtualenv", 0) if (!$prog);
		$need_sphinx = 1;
	} else {
		add_package("python-sphinx", 0);
	}
}

#
# Ancillary subroutines
#

sub catcheck($)
{
  my $res = "";
  $res = qx(cat $_[0]) if (-r $_[0]);
  return $res;
}

sub which($)
{
	my $file = shift;
	my @path = split ":", $ENV{PATH};

	foreach my $dir(@path) {
		my $name = $dir.'/'.$file;
		return $name if (-x $name );
	}
	return undef;
}

#
# Subroutines that check distro-specific hints
#

sub give_debian_hints()
{
	my %map = (
		"python-sphinx"		=> "python3-sphinx",
		"sphinx_rtd_theme"	=> "python3-sphinx-rtd-theme",
		"virtualenv"		=> "virtualenv",
		"dot"			=> "graphviz",
		"convert"		=> "imagemagick",
		"Pod::Usage"		=> "perl-modules",
		"xelatex"		=> "texlive-xetex",
		"rsvg-convert"		=> "librsvg2-bin",
	);

	if ($pdf) {
		check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
				   "fonts-dejavu", 1);
	}

	check_program("dvipng", 1) if ($pdf);
	check_missing(\%map);

	return if (!$need && !$optional);
	printf("You should run:\n\n\tsudo apt-get install $install\n");
}

sub give_redhat_hints()
{
	my %map = (
		"python-sphinx"		=> "python3-sphinx",
		"sphinx_rtd_theme"	=> "python3-sphinx_rtd_theme",
		"virtualenv"		=> "python3-virtualenv",
		"dot"			=> "graphviz",
		"convert"		=> "ImageMagick",
		"Pod::Usage"		=> "perl-Pod-Usage",
		"xelatex"		=> "texlive-xetex-bin",
		"rsvg-convert"		=> "librsvg2-tools",
	);

	my @fedora26_opt_pkgs = (
		"graphviz-gd",		# Fedora 26: needed for PDF support
	);

	my @fedora_tex_pkgs = (
		"texlive-collection-fontsrecommended",
		"texlive-collection-latex",
		"dejavu-sans-fonts",
		"dejavu-serif-fonts",
		"dejavu-sans-mono-fonts",
	);

	#
	# Checks valid for RHEL/CentOS version 7.x.
	#
	if (! $system_release =~ /Fedora/) {
		$map{"virtualenv"} = "python-virtualenv";
	}

	my $release;

	$release = $1 if ($system_release =~ /Fedora\s+release\s+(\d+)/);

	check_rpm_missing(\@fedora26_opt_pkgs, 1) if ($pdf && $release >= 26);
	check_rpm_missing(\@fedora_tex_pkgs, 1) if ($pdf);
	check_missing_tex(1) if ($pdf);
	check_missing(\%map);

	return if (!$need && !$optional);

	if ($release >= 18) {
		# dnf, for Fedora 18+
		printf("You should run:\n\n\tsudo dnf install -y $install\n");
	} else {
		# yum, for RHEL (and clones) or Fedora version < 18
		printf("You should run:\n\n\tsudo yum install -y $install\n");
	}
}

sub give_opensuse_hints()
{
	my %map = (
		"python-sphinx"		=> "python3-sphinx",
		"sphinx_rtd_theme"	=> "python3-sphinx_rtd_theme",
		"virtualenv"		=> "python3-virtualenv",
		"dot"			=> "graphviz",
		"convert"		=> "ImageMagick",
		"Pod::Usage"		=> "perl-Pod-Usage",
		"xelatex"		=> "texlive-xetex-bin",
		"rsvg-convert"		=> "rsvg-view",
	);

	my @suse_tex_pkgs = (
		"texlive-babel-english",
		"texlive-caption",
		"texlive-colortbl",
		"texlive-courier",
		"texlive-dvips",
		"texlive-helvetic",
		"texlive-makeindex",
		"texlive-metafont",
		"texlive-metapost",
		"texlive-palatino",
		"texlive-preview",
		"texlive-times",
		"texlive-zapfchan",
		"texlive-zapfding",
	);

	check_rpm_missing(\@suse_tex_pkgs, 1) if ($pdf);
	check_missing_tex(1) if ($pdf);
	check_missing(\%map);

	return if (!$need && !$optional);
	printf("You should run:\n\n\tsudo zypper install --no-recommends $install\n");
}

sub give_mageia_hints()
{
	my %map = (
		"python-sphinx"		=> "python3-sphinx",
		"sphinx_rtd_theme"	=> "python3-sphinx_rtd_theme",
		"virtualenv"		=> "python3-virtualenv",
		"dot"			=> "graphviz",
		"convert"		=> "ImageMagick",
		"Pod::Usage"		=> "perl-Pod-Usage",
		"xelatex"		=> "texlive",
		"rsvg-convert"		=> "librsvg2-tools",
	);

	my @tex_pkgs = (
		"texlive-fontsextra",
	);

	check_rpm_missing(\@tex_pkgs, 1) if ($pdf);
	check_missing(\%map);

	return if (!$need && !$optional);
	printf("You should run:\n\n\tsudo urpmi $install\n");
}

sub give_arch_linux_hints()
{
	my %map = (
		"sphinx_rtd_theme"	=> "python-sphinx_rtd_theme",
		"virtualenv"		=> "python-virtualenv",
		"dot"			=> "graphviz",
		"convert"		=> "imagemagick",
		"xelatex"		=> "texlive-bin",
		"rsvg-convert"		=> "extra/librsvg",
	);

	my @archlinux_tex_pkgs = (
		"texlive-core",
		"texlive-latexextra",
		"ttf-dejavu",
	);
	check_pacman_missing(\@archlinux_tex_pkgs, 1) if ($pdf);
	check_missing(\%map);

	return if (!$need && !$optional);
	printf("You should run:\n\n\tsudo pacman -S $install\n");
}

sub give_gentoo_hints()
{
	my %map = (
		"sphinx_rtd_theme"	=> "dev-python/sphinx_rtd_theme",
		"virtualenv"		=> "dev-python/virtualenv",
		"dot"			=> "media-gfx/graphviz",
		"convert"		=> "media-gfx/imagemagick",
		"xelatex"		=> "dev-texlive/texlive-xetex media-fonts/dejavu",
		"rsvg-convert"		=> "gnome-base/librsvg",
	);

	check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf",
			   "media-fonts/dejavu", 1) if ($pdf);

	check_missing(\%map);

	return if (!$need && !$optional);

	printf("You should run:\n\n");
	printf("\tsudo su -c 'echo \"media-gfx/imagemagick svg png\" > /etc/portage/package.use/imagemagick'\n");
	printf("\tsudo su -c 'echo \"media-gfx/graphviz cairo pdf\" > /etc/portage/package.use/graphviz'\n");
	printf("\tsudo emerge --ask $install\n");

}

sub check_distros()
{
	# Distro-specific hints
	if ($system_release =~ /Red Hat Enterprise Linux/) {
		give_redhat_hints;
		return;
	}
	if ($system_release =~ /CentOS/) {
		give_redhat_hints;
		return;
	}
	if ($system_release =~ /Scientific Linux/) {
		give_redhat_hints;
		return;
	}
	if ($system_release =~ /Oracle Linux Server/) {
		give_redhat_hints;
		return;
	}
	if ($system_release =~ /Fedora/) {
		give_redhat_hints;
		return;
	}
	if ($system_release =~ /Ubuntu/) {
		give_debian_hints;
		return;
	}
	if ($system_release =~ /Debian/) {
		give_debian_hints;
		return;
	}
	if ($system_release =~ /openSUSE/) {
		give_opensuse_hints;
		return;
	}
	if ($system_release =~ /Mageia/) {
		give_mageia_hints;
		return;
	}
	if ($system_release =~ /Arch Linux/) {
		give_arch_linux_hints;
		return;
	}
	if ($system_release =~ /Gentoo/) {
		give_gentoo_hints;
		return;
	}

	#
	# Fall-back to generic hint code for other distros
	# That's far from ideal, specially for LaTeX dependencies.
	#
	my %map = (
		"sphinx-build" => "sphinx"
	);
	check_missing_tex(1) if ($pdf);
	check_missing(\%map);
	print "I don't know distro $system_release.\n";
	print "So, I can't provide you a hint with the install procedure.\n";
	print "There are likely missing dependencies.\n";
}

#
# Common dependencies
#

sub check_needs()
{
	if ($system_release) {
		print "Detected OS: $system_release.\n";
	} else {
		print "Unknown OS\n";
	}

	# RHEL 7.x and clones have Sphinx version 1.1.x and incomplete texlive
	if (($system_release =~ /Red Hat Enterprise Linux/) ||
	    ($system_release =~ /CentOS/) ||
	    ($system_release =~ /Scientific Linux/) ||
	    ($system_release =~ /Oracle Linux Server/)) {
		$virtualenv = 1;
		$pdf = 0;

		printf("NOTE: On this distro, Sphinx and TexLive shipped versions are incompatible\n");
		printf("with doc build. So, use Sphinx via a Python virtual environment.\n\n");
		printf("This script can't install a TexLive version that would provide PDF.\n");
	}

	# Check for needed programs/tools
	check_sphinx();
	check_perl_module("Pod::Usage", 0);
	check_program("make", 0);
	check_program("gcc", 0);
	check_python_module("sphinx_rtd_theme", 1) if (!$virtualenv);
	check_program("xelatex", 1) if ($pdf);
	check_program("dot", 1);
	check_program("convert", 1);
	check_program("rsvg-convert", 1) if ($pdf);

	check_distros();

	if ($need_symlink) {
		printf "\tsudo ln -sf %s /usr/bin/sphinx-build\n\n",
		       which("sphinx-build-3");
	}
	if ($need_sphinx) {
		my $activate = "$virtenv_dir/bin/activate";
		if (-e "$ENV{'PWD'}/$activate") {
			printf "\nNeed to activate virtualenv with:\n";
			printf "\t. $activate\n";
		} else {
			my $virtualenv = findprog("virtualenv-3");
			$virtualenv = findprog("virtualenv-3.5") if (!$virtualenv);
			$virtualenv = findprog("virtualenv") if (!$virtualenv);
			$virtualenv = "virtualenv" if (!$virtualenv);

			printf "\t$virtualenv $virtenv_dir\n";
			printf "\t. $activate\n";
			printf "\tpip install -r $requirement_file\n";
			$need++;
		}
	}
	printf "\n";

	print "All optional dependenties are met.\n" if (!$optional);

	if ($need == 1) {
		die "Can't build as $need mandatory dependency is missing";
	} elsif ($need) {
		die "Can't build as $need mandatory dependencies are missing";
	}

	print "Needed package dependencies are met.\n";
}

#
# Main
#

while (@ARGV) {
	my $arg = shift(@ARGV);

	if ($arg eq "--no-virtualenv") {
		$virtualenv = 0;
	} elsif ($arg eq "--no-pdf"){
		$pdf = 0;
	} else {
		print "Usage:\n\t$0 <--no-virtualenv> <--no-pdf>\n\n";
		exit -1;
	}
}

#
# Determine the system type. There's no standard unique way that would
# work with all distros with a minimal package install. So, several
# methods are used here.
#
# By default, it will use lsb_release function. If not available, it will
# fail back to reading the known different places where the distro name
# is stored
#

$system_release = qx(lsb_release -d) if which("lsb_release");
$system_release =~ s/Description:\s*// if ($system_release);
$system_release = catcheck("/etc/system-release") if !$system_release;
$system_release = catcheck("/etc/redhat-release") if !$system_release;
$system_release = catcheck("/etc/lsb-release") if !$system_release;
$system_release = catcheck("/etc/gentoo-release") if !$system_release;
$system_release = catcheck("/etc/issue") if !$system_release;
$system_release =~ s/\s+$//;

check_needs;
Commit	Line	Data
24071ac1 MCC	1	#!/usr/bin/perl
	2	use strict;
	3
	4	# Copyright (c) 2017 Mauro Carvalho Chehab <[email protected]>
	5	#
	6	# This program is free software; you can redistribute it and/or
	7	# modify it under the terms of the GNU General Public License
	8	# as published by the Free Software Foundation; either version 2
	9	# of the License, or (at your option) any later version.
	10	#
	11	# This program is distributed in the hope that it will be useful,
	12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	# GNU General Public License for more details.
	15
5be33182	16	my $virtenv_dir = "sphinx_1.4";
fb947f3f	17	my $requirement_file = "Documentation/sphinx/requirements.txt";
5be33182	18
24071ac1 MCC	19	#
	20	# Static vars
	21	#
	22
	23	my %missing;
	24	my $system_release;
	25	my $need = 0;
	26	my $optional = 0;
	27	my $need_symlink = 0;
	28	my $need_sphinx = 0;
	29	my $install = "";
	30
	31	#
	32	# Command line arguments
	33	#
	34
	35	my $pdf = 1;
	36	my $virtualenv = 1;
	37
	38	#
	39	# List of required texlive packages on Fedora and OpenSuse
	40	#
	41
	42	my %texlive = (
24071ac1 MCC	43	'amsfonts.sty' => 'texlive-amsfonts',
	44	'amsmath.sty' => 'texlive-amsmath',
	45	'amssymb.sty' => 'texlive-amsfonts',
	46	'amsthm.sty' => 'texlive-amscls',
	47	'anyfontsize.sty' => 'texlive-anyfontsize',
	48	'atbegshi.sty' => 'texlive-oberdiek',
	49	'bm.sty' => 'texlive-tools',
	50	'capt-of.sty' => 'texlive-capt-of',
	51	'cmap.sty' => 'texlive-cmap',
	52	'ecrm1000.tfm' => 'texlive-ec',
	53	'eqparbox.sty' => 'texlive-eqparbox',
	54	'eu1enc.def' => 'texlive-euenc',
	55	'fancybox.sty' => 'texlive-fancybox',
	56	'fancyvrb.sty' => 'texlive-fancyvrb',
	57	'float.sty' => 'texlive-float',
	58	'fncychap.sty' => 'texlive-fncychap',
	59	'footnote.sty' => 'texlive-mdwtools',
	60	'framed.sty' => 'texlive-framed',
	61	'luatex85.sty' => 'texlive-luatex85',
	62	'multirow.sty' => 'texlive-multirow',
	63	'needspace.sty' => 'texlive-needspace',
	64	'palatino.sty' => 'texlive-psnfss',
	65	'parskip.sty' => 'texlive-parskip',
	66	'polyglossia.sty' => 'texlive-polyglossia',
	67	'tabulary.sty' => 'texlive-tabulary',
	68	'threeparttable.sty' => 'texlive-threeparttable',
	69	'titlesec.sty' => 'texlive-titlesec',
	70	'ucs.sty' => 'texlive-ucs',
	71	'upquote.sty' => 'texlive-upquote',
	72	'wrapfig.sty' => 'texlive-wrapfig',
	73	);
	74
	75	#
	76	# Subroutines that checks if a feature exists
	77	#
	78
	79	sub check_missing(%)
	80	{
	81	my %map = %{$_[0]};
	82
	83	foreach my $prog (sort keys %missing) {
	84	my $is_optional = $missing{$prog};
	85
	86	if ($is_optional) {
	87	print "Warning: better to also install \"$prog\".\n";
	88	} else {
	89	print "ERROR: please install \"$prog\", otherwise, build won't work.\n";
	90	}
	91	if (defined($map{$prog})) {
	92	$install .= " " . $map{$prog};
	93	} else {
	94	$install .= " " . $prog;
	95	}
	96	}
	97
	98	$install =~ s/^\s//;
	99	}
	100
	101	sub add_package($$)
	102	{
	103	my $package = shift;
	104	my $is_optional = shift;
	105
	106	$missing{$package} = $is_optional;
107	if ($is_optional) {
108	$optional++;
109	} else {
110	$need++;
111	}
112	}
113
114	sub check_missing_file($$$)
115	{
116	my $file = shift;
117	my $package = shift;
118	my $is_optional = shift;
119
120	return if(-e $file);
121
122	add_package($package, $is_optional);
123	}
124
125	sub findprog($)
126	{
127	foreach(split(/:/, $ENV{PATH})) {
128	return "$_/$_[0]" if(-x "$_/$_[0]");
129	}
130	}
131
132	sub check_program($$)
133	{
134	my $prog = shift;
135	my $is_optional = shift;
136
137	return if findprog($prog);
138
139	add_package($prog, $is_optional);
140	}
141
142	sub check_perl_module($$)
143	{
144	my $prog = shift;
145	my $is_optional = shift;
146
147	my $err = system("perl -M$prog -e 1 2>/dev/null /dev/null");
148	return if ($err == 0);
149
150	add_package($prog, $is_optional);
151	}
152
153	sub check_python_module($$)
154	{
155	my $prog = shift;
156	my $is_optional = shift;
157
158	my $err = system("python3 -c 'import $prog' 2>/dev/null /dev/null");
159	return if ($err == 0);
160	my $err = system("python -c 'import $prog' 2>/dev/null /dev/null");
161	return if ($err == 0);
162
163	add_package($prog, $is_optional);
164	}
165
166	sub check_rpm_missing($$)
167	{
168	my @pkgs = @{$_[0]};
169	my $is_optional = $_[1];
170
171	foreach my $prog(@pkgs) {
172	my $err = system("rpm -q '$prog' 2>/dev/null >/dev/null");
173	add_package($prog, $is_optional) if ($err);
174	}
175	}
176
177	sub check_pacman_missing($$)
178	{
179	my @pkgs = @{$_[0]};
180	my $is_optional = $_[1];
181
182	foreach my $prog(@pkgs) {
183	my $err = system("pacman -Q '$prog' 2>/dev/null >/dev/null");
184	add_package($prog, $is_optional) if ($err);
185	}
186	}
187
188	sub check_missing_tex($)
189	{
190	my $is_optional = shift;
191	my $kpsewhich = findprog("kpsewhich");
192
193	foreach my $prog(keys %texlive) {
194	my $package = $texlive{$prog};
195	if (!$kpsewhich) {
196	add_package($package, $is_optional);
197	next;
198	}
199	my $file = qx($kpsewhich $prog);
200	add_package($package, $is_optional) if ($file =~ /^\s*$/);
201	}
202	}
203
204	sub check_sphinx()
205	{
206	return if findprog("sphinx-build");
207
208	if (findprog("sphinx-build-3")) {
209	$need_symlink = 1;
210	return;
211	}
212
213	if ($virtualenv) {
800d408a MCC	214	my $prog = findprog("virtualenv-3");
	215	$prog = findprog("virtualenv-3.5") if (!$prog);
	216
	217	check_program("virtualenv", 0) if (!$prog);
24071ac1 MCC	218	$need_sphinx = 1;
	219	} else {
	220	add_package("python-sphinx", 0);
	221	}
	222	}
	223
	224	#
	225	# Ancillary subroutines
	226	#
	227
	228	sub catcheck($)
	229	{
	230	my $res = "";
	231	$res = qx(cat $_[0]) if (-r $_[0]);
	232	return $res;
	233	}
	234
	235	sub which($)
	236	{
	237	my $file = shift;
	238	my @path = split ":", $ENV{PATH};
	239
	240	foreach my $dir(@path) {
	241	my $name = $dir.'/'.$file;
	242	return $name if (-x $name );
	243	}
	244	return undef;
	245	}
	246
	247	#
	248	# Subroutines that check distro-specific hints
	249	#
	250
	251	sub give_debian_hints()
	252	{
	253	my %map = (
	254	"python-sphinx" => "python3-sphinx",
	255	"sphinx_rtd_theme" => "python3-sphinx-rtd-theme",
	256	"virtualenv" => "virtualenv",
24071ac1 MCC	257	"dot" => "graphviz",
	258	"convert" => "imagemagick",
	259	"Pod::Usage" => "perl-modules",
	260	"xelatex" => "texlive-xetex",
8e7d5d15	261	"rsvg-convert" => "librsvg2-bin",
24071ac1 MCC	262	);
	263
	264	if ($pdf) {
	265	check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
	266	"fonts-dejavu", 1);
	267	}
	268
	269	check_program("dvipng", 1) if ($pdf);
	270	check_missing(\%map);
	271
	272	return if (!$need && !$optional);
	273	printf("You should run:\n\n\tsudo apt-get install $install\n");
	274	}
	275
	276	sub give_redhat_hints()
	277	{
	278	my %map = (
	279	"python-sphinx" => "python3-sphinx",
	280	"sphinx_rtd_theme" => "python3-sphinx_rtd_theme",
	281	"virtualenv" => "python3-virtualenv",
24071ac1 MCC	282	"dot" => "graphviz",
	283	"convert" => "ImageMagick",
	284	"Pod::Usage" => "perl-Pod-Usage",
	285	"xelatex" => "texlive-xetex-bin",
8e7d5d15	286	"rsvg-convert" => "librsvg2-tools",
24071ac1 MCC	287	);
24071ac1 MCC	288
5d88953c MCC	289	my @fedora26_opt_pkgs = (
	290	"graphviz-gd", # Fedora 26: needed for PDF support
	291	);
	292
24071ac1 MCC	293	my @fedora_tex_pkgs = (
	294	"texlive-collection-fontsrecommended",
	295	"texlive-collection-latex",
	296	"dejavu-sans-fonts",
	297	"dejavu-serif-fonts",
	298	"dejavu-sans-mono-fonts",
	299	);
	300
9b756a9d MCC	301	#
	302	# Checks valid for RHEL/CentOS version 7.x.
	303	#
	304	if (! $system_release =~ /Fedora/) {
	305	$map{"virtualenv"} = "python-virtualenv";
	306	}
	307
5d88953c MCC	308	my $release;
	309
	310	$release = $1 if ($system_release =~ /Fedora\s+release\s+(\d+)/);
	311
	312	check_rpm_missing(\@fedora26_opt_pkgs, 1) if ($pdf && $release >= 26);
24071ac1 MCC	313	check_rpm_missing(\@fedora_tex_pkgs, 1) if ($pdf);
	314	check_missing_tex(1) if ($pdf);
	315	check_missing(\%map);
	316
	317	return if (!$need && !$optional);
9b756a9d MCC	318
	319	if ($release >= 18) {
	320	# dnf, for Fedora 18+
	321	printf("You should run:\n\n\tsudo dnf install -y $install\n");
	322	} else {
	323	# yum, for RHEL (and clones) or Fedora version < 18
	324	printf("You should run:\n\n\tsudo yum install -y $install\n");
	325	}
24071ac1 MCC	326	}
	327
	328	sub give_opensuse_hints()
	329	{
	330	my %map = (
	331	"python-sphinx" => "python3-sphinx",
	332	"sphinx_rtd_theme" => "python3-sphinx_rtd_theme",
	333	"virtualenv" => "python3-virtualenv",
24071ac1 MCC	334	"dot" => "graphviz",
	335	"convert" => "ImageMagick",
	336	"Pod::Usage" => "perl-Pod-Usage",
	337	"xelatex" => "texlive-xetex-bin",
8e7d5d15	338	"rsvg-convert" => "rsvg-view",
24071ac1 MCC	339	);
	340
	341	my @suse_tex_pkgs = (
	342	"texlive-babel-english",
	343	"texlive-caption",
	344	"texlive-colortbl",
	345	"texlive-courier",
	346	"texlive-dvips",
	347	"texlive-helvetic",
	348	"texlive-makeindex",
	349	"texlive-metafont",
	350	"texlive-metapost",
	351	"texlive-palatino",
	352	"texlive-preview",
	353	"texlive-times",
	354	"texlive-zapfchan",
	355	"texlive-zapfding",
	356	);
	357
	358	check_rpm_missing(\@suse_tex_pkgs, 1) if ($pdf);
	359	check_missing_tex(1) if ($pdf);
	360	check_missing(\%map);
	361
	362	return if (!$need && !$optional);
	363	printf("You should run:\n\n\tsudo zypper install --no-recommends $install\n");
	364	}
	365
800d408a MCC	366	sub give_mageia_hints()
	367	{
	368	my %map = (
	369	"python-sphinx" => "python3-sphinx",
	370	"sphinx_rtd_theme" => "python3-sphinx_rtd_theme",
	371	"virtualenv" => "python3-virtualenv",
800d408a MCC	372	"dot" => "graphviz",
	373	"convert" => "ImageMagick",
	374	"Pod::Usage" => "perl-Pod-Usage",
	375	"xelatex" => "texlive",
	376	"rsvg-convert" => "librsvg2-tools",
	377	);
	378
	379	my @tex_pkgs = (
	380	"texlive-fontsextra",
	381	);
	382
800d408a MCC	383	check_rpm_missing(\@tex_pkgs, 1) if ($pdf);
	384	check_missing(\%map);
	385
	386	return if (!$need && !$optional);
	387	printf("You should run:\n\n\tsudo urpmi $install\n");
	388	}
	389
24071ac1 MCC	390	sub give_arch_linux_hints()
	391	{
	392	my %map = (
	393	"sphinx_rtd_theme" => "python-sphinx_rtd_theme",
	394	"virtualenv" => "python-virtualenv",
24071ac1 MCC	395	"dot" => "graphviz",
	396	"convert" => "imagemagick",
	397	"xelatex" => "texlive-bin",
8e7d5d15	398	"rsvg-convert" => "extra/librsvg",
24071ac1 MCC	399	);
	400
	401	my @archlinux_tex_pkgs = (
	402	"texlive-core",
	403	"texlive-latexextra",
	404	"ttf-dejavu",
	405	);
	406	check_pacman_missing(\@archlinux_tex_pkgs, 1) if ($pdf);
	407	check_missing(\%map);
	408
	409	return if (!$need && !$optional);
	410	printf("You should run:\n\n\tsudo pacman -S $install\n");
	411	}
	412
	413	sub give_gentoo_hints()
	414	{
	415	my %map = (
	416	"sphinx_rtd_theme" => "dev-python/sphinx_rtd_theme",
	417	"virtualenv" => "dev-python/virtualenv",
24071ac1 MCC	418	"dot" => "media-gfx/graphviz",
	419	"convert" => "media-gfx/imagemagick",
	420	"xelatex" => "dev-texlive/texlive-xetex media-fonts/dejavu",
8e7d5d15	421	"rsvg-convert" => "gnome-base/librsvg",
24071ac1 MCC	422	);
	423
	424	check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf",
	425	"media-fonts/dejavu", 1) if ($pdf);
	426
	427	check_missing(\%map);
	428
	429	return if (!$need && !$optional);
bba1e4cb MCC	430
	431	printf("You should run:\n\n");
	432	printf("\tsudo su -c 'echo \"media-gfx/imagemagick svg png\" > /etc/portage/package.use/imagemagick'\n");
	433	printf("\tsudo su -c 'echo \"media-gfx/graphviz cairo pdf\" > /etc/portage/package.use/graphviz'\n");
	434	printf("\tsudo emerge --ask $install\n");
	435
24071ac1 MCC	436	}
	437
	438	sub check_distros()
	439	{
	440	# Distro-specific hints
	441	if ($system_release =~ /Red Hat Enterprise Linux/) {
	442	give_redhat_hints;
	443	return;
	444	}
9b756a9d MCC	445	if ($system_release =~ /CentOS/) {
	446	give_redhat_hints;
	447	return;
	448	}
	449	if ($system_release =~ /Scientific Linux/) {
	450	give_redhat_hints;
	451	return;
	452	}
	453	if ($system_release =~ /Oracle Linux Server/) {
	454	give_redhat_hints;
	455	return;
	456	}
24071ac1 MCC	457	if ($system_release =~ /Fedora/) {
	458	give_redhat_hints;
	459	return;
	460	}
	461	if ($system_release =~ /Ubuntu/) {
	462	give_debian_hints;
	463	return;
	464	}
	465	if ($system_release =~ /Debian/) {
	466	give_debian_hints;
	467	return;
	468	}
	469	if ($system_release =~ /openSUSE/) {
	470	give_opensuse_hints;
	471	return;
	472	}
800d408a MCC	473	if ($system_release =~ /Mageia/) {
	474	give_mageia_hints;
	475	return;
	476	}
24071ac1 MCC	477	if ($system_release =~ /Arch Linux/) {
	478	give_arch_linux_hints;
	479	return;
	480	}
	481	if ($system_release =~ /Gentoo/) {
	482	give_gentoo_hints;
	483	return;
	484	}
	485
	486	#
	487	# Fall-back to generic hint code for other distros
	488	# That's far from ideal, specially for LaTeX dependencies.
	489	#
	490	my %map = (
	491	"sphinx-build" => "sphinx"
	492	);
	493	check_missing_tex(1) if ($pdf);
	494	check_missing(\%map);
	495	print "I don't know distro $system_release.\n";
	496	print "So, I can't provide you a hint with the install procedure.\n";
	497	print "There are likely missing dependencies.\n";
	498	}
	499
	500	#
	501	# Common dependencies
	502	#
	503
	504	sub check_needs()
	505	{
	506	if ($system_release) {
9b756a9d	507	print "Detected OS: $system_release.\n";
24071ac1	508	} else {
9b756a9d MCC	509	print "Unknown OS\n";
	510	}
	511
	512	# RHEL 7.x and clones have Sphinx version 1.1.x and incomplete texlive
	513	if (($system_release =~ /Red Hat Enterprise Linux/) \|\|
	514	($system_release =~ /CentOS/) \|\|
	515	($system_release =~ /Scientific Linux/) \|\|
	516	($system_release =~ /Oracle Linux Server/)) {
	517	$virtualenv = 1;
	518	$pdf = 0;
	519
	520	printf("NOTE: On this distro, Sphinx and TexLive shipped versions are incompatible\n");
	521	printf("with doc build. So, use Sphinx via a Python virtual environment.\n\n");
	522	printf("This script can't install a TexLive version that would provide PDF.\n");
24071ac1 MCC	523	}
	524
	525	# Check for needed programs/tools
	526	check_sphinx();
	527	check_perl_module("Pod::Usage", 0);
	528	check_program("make", 0);
	529	check_program("gcc", 0);
	530	check_python_module("sphinx_rtd_theme", 1) if (!$virtualenv);
	531	check_program("xelatex", 1) if ($pdf);
	532	check_program("dot", 1);
	533	check_program("convert", 1);
8e7d5d15	534	check_program("rsvg-convert", 1) if ($pdf);
24071ac1 MCC	535
	536	check_distros();
	537
	538	if ($need_symlink) {
	539	printf "\tsudo ln -sf %s /usr/bin/sphinx-build\n\n",
	540	which("sphinx-build-3");
	541	}
	542	if ($need_sphinx) {
5be33182 MCC	543	my $activate = "$virtenv_dir/bin/activate";
	544	if (-e "$ENV{'PWD'}/$activate") {
	545	printf "\nNeed to activate virtualenv with:\n";
	546	printf "\t. $activate\n";
	547	} else {
	548	my $virtualenv = findprog("virtualenv-3");
800d408a	549	$virtualenv = findprog("virtualenv-3.5") if (!$virtualenv);
5be33182 MCC	550	$virtualenv = findprog("virtualenv") if (!$virtualenv);
	551	$virtualenv = "virtualenv" if (!$virtualenv);
	552
	553	printf "\t$virtualenv $virtenv_dir\n";
	554	printf "\t. $activate\n";
fb947f3f	555	printf "\tpip install -r $requirement_file\n";
5be33182 MCC	556	$need++;
5be33182 MCC	557	}
24071ac1 MCC	558	}
	559	printf "\n";
	560
	561	print "All optional dependenties are met.\n" if (!$optional);
	562
	563	if ($need == 1) {
	564	die "Can't build as $need mandatory dependency is missing";
	565	} elsif ($need) {
	566	die "Can't build as $need mandatory dependencies are missing";
	567	}
	568
	569	print "Needed package dependencies are met.\n";
	570	}
	571
	572	#
	573	# Main
	574	#
	575
	576	while (@ARGV) {
	577	my $arg = shift(@ARGV);
	578
	579	if ($arg eq "--no-virtualenv") {
	580	$virtualenv = 0;
	581	} elsif ($arg eq "--no-pdf"){
	582	$pdf = 0;
	583	} else {
	584	print "Usage:\n\t$0 <--no-virtualenv> <--no-pdf>\n\n";
	585	exit -1;
	586	}
	587	}
	588
	589	#
	590	# Determine the system type. There's no standard unique way that would
	591	# work with all distros with a minimal package install. So, several
	592	# methods are used here.
	593	#
	594	# By default, it will use lsb_release function. If not available, it will
	595	# fail back to reading the known different places where the distro name
	596	# is stored
	597	#
	598
	599	$system_release = qx(lsb_release -d) if which("lsb_release");
	600	$system_release =~ s/Description:\s*// if ($system_release);
	601	$system_release = catcheck("/etc/system-release") if !$system_release;
	602	$system_release = catcheck("/etc/redhat-release") if !$system_release;
	603	$system_release = catcheck("/etc/lsb-release") if !$system_release;
	604	$system_release = catcheck("/etc/gentoo-release") if !$system_release;
	605	$system_release = catcheck("/etc/issue") if !$system_release;
	606	$system_release =~ s/\s+$//;
	607
	608	check_needs;