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install.rb
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install.rb
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#
# Author: James M. Lawrence <[email protected]>.
#
require 'net/ftp'
require 'rbconfig'
require 'ostruct'
require 'fileutils'
require 'optparse'
require 'pathname'
class Installer
include FileUtils
CONFIG = RbConfig::CONFIG
BIT64 = (1.size == 8)
RB_BASENAME = Pathname.new "P4.rb"
SO_BASENAME = Pathname.new "P4.#{CONFIG['DLEXT']}"
RAW_INSTALL_FILES = [
Pathname.new(CONFIG["sitelibdir"]) + RB_BASENAME,
Pathname.new(CONFIG["sitearchdir"]) + SO_BASENAME,
]
GEM_INSTALL_FILES = [
Pathname.new("lib") + RB_BASENAME,
Pathname.new("ext") + SO_BASENAME,
]
SERVER = "ftp.perforce.com"
SERVER_TOP_DIR = Pathname.new "pub/perforce"
# Mysterious "ghost" releases which lack files
HOSED_VERSIONS = %w[09.3 11.1 12.2]
if RUBY_PLATFORM == 'i386-mingw32'
P4API_REMOTE_BASENAME = Pathname.new "p4api.zip"
else
P4API_REMOTE_BASENAME = Pathname.new "p4api.tgz"
end
P4RUBY_REMOTE_BASENAME = Pathname.new "p4ruby.tgz"
WORK_DIR = Pathname.new "work"
DISTFILES_DIR = WORK_DIR + "distfiles"
BUILD_DIR = WORK_DIR + "build"
def parse_command_line
OptionParser.new("Usage: ruby install.rb [options]", 24, "") {
|parser|
parser.on(
"--version NN.N",
"Version to download, e.g. 10.2. Default finds latest.") {
|version|
@s.version = version
}
parser.on(
"--list-versions",
"List available versions.") {
@s.list_versions = true
}
parser.on(
"--platform PLATFORM",
"Perforce-named platform to download. Default guesses.") {
|platform|
@s.platform = platform
}
parser.on(
"--list-platforms",
"List available platforms for the given version.") {
@s.list_platforms = true
}
parser.on(
"--gem",
"Gem configuration (for the gem installer).") {
@s.gem_config = true
}
parser.on(
"--uninstall",
"Uninstall.") {
@s.uninstall = true
}
parser.on(
"--local",
"Use the files in work/distfiles (manual download).") {
@s.local = true
}
parser.parse(ARGV)
}
end
def run
@s = LazyStruct.new
parse_command_line
config
if @s.uninstall
uninstall
elsif @s.list_platforms
puts platforms
elsif @s.list_versions
puts versions
elsif @s.platform.nil?
platform_fail
elsif @s.platform =~ %r!\Ant!
windows_install
else
fetch
build
install
verify_install
end
end
def config
if CONFIG["LIBRUBYARG_SHARED"].empty?
raise "error: ruby must be configured with --enable-shared"
end
@s.p4api = LazyStruct.new.tap { |t|
t.basename = P4API_REMOTE_BASENAME
}
@s.p4ruby = LazyStruct.new.tap { |t|
t.basename = P4RUBY_REMOTE_BASENAME
}
@s.specs = [ @s.p4ruby, @s.p4api ]
@s.specs.each { |spec|
spec.attribute(:local) {
DISTFILES_DIR + spec.basename
}
}
unless @s.platform
@s.attribute(:platform) {
guess_platform
}
end
unless @s.version
@s.attribute(:version) {
latest_version
}
end
@s.attribute(:version_dir) {
SERVER_TOP_DIR + "r#{@s.version}"
}
@s.p4api.attribute(:remote) {
@s.version_dir + "bin.#{@s.platform}" + @s.p4api.basename
}
@s.p4ruby.attribute(:remote) {
@s.version_dir + "bin.tools" + @s.p4ruby.basename
}
@s.attribute(:ftp) {
Net::FTP.new(SERVER).tap { |t|
t.passive = true
t.login
}
}
end
def guess_cpu
if CONFIG["target_os"] =~ %r!darwin!
# specific binaries were removed in p4api-09.1
"u"
else
case CONFIG["target_cpu"]
when %r!ia!i
"ia64"
when %r!86!
# note: with '_'
"x86" + (BIT64 ? "_64" : "")
when %r!(ppc|sparc)!i
# note: without '_'
$1 + (BIT64 ? "64" : "")
else
""
end
end
end
def guess_version(os)
if match = `uname -a`.match(%r!#{os}\s+\S+\s+(\d+)\.(\d+)!i)
version = match.captures.join
cpu = guess_cpu
platforms = self.platforms
(0..version.to_i).map { |n|
[os, n.to_s, cpu].join
}.select { |platform|
platforms.include? platform
}.last
else
nil
end
end
def guess_platform(opts = {})
config_os = CONFIG["target_os"].downcase
windows_cpu = BIT64 ? "x64" : "x86"
if config_os =~ %r!cygwin!i
"cygwin" + windows_cpu
elsif (config_os =~ %r!mingw!i) && (CONFIG["MAJOR"].to_i == 1) && (CONFIG["MINOR"].to_i == 9)
"mingw" + windows_cpu
elsif config_os =~ %r!(mswin|mingw)!i
"nt" + windows_cpu
elsif @s.local
"<local>"
else
if match = config_os.match(%r!\A\D+!)
guess_version(match[0])
else
nil
end
end
end
def platform_fail
install_fail {
@s.version = "<version>"
@s.platform = "<platform>"
message = %Q{
Auto-fetch not yet handled for this platform. Run:
\truby install.rb --list-platforms
to see the available platforms, then run
\truby install.rb --platform PLATFORM
with your platform.
If all of the above fails, manually fetch
\tftp://#{SERVER}/#{@s.p4api.remote}
Copy it to #{@s.p4api.local} and run install.rb --local.
}.gsub(%r!^ +(?=\S)!, "")
mkdir_p(DISTFILES_DIR)
puts message
}
end
def install_fail
yield
exit(1)
end
def sys(*args)
system(*args).tap { |result|
unless result
raise "system() failed: #{args.join(" ")}"
end
}
end
def unpack(distfile, target_dir)
if File.extname(distfile.to_s).downcase == '.zip'
sys('unzip', distfile.to_s, '-d', target_dir.to_s)
else
sys("tar", "zxvf", distfile.to_s, "-C", target_dir.to_s)
end
end
def fetch_spec(spec)
unless @s.local
mkdir_p(spec.local.dirname)
puts "downloading ftp://#{SERVER}/#{spec.remote} ..."
@s.ftp.getbinaryfile(spec.remote.to_s, spec.local.to_s)
end
end
def fetch
@s.specs.each { |spec|
fetch_spec(spec)
}
end
def remote_files_matching(dir, regex)
@s.ftp.ls(dir.to_s).map { |entry|
if match = entry.match(regex)
yield match
else
nil
end
}.reject { |entry|
entry.nil?
}
end
def platforms
remote_files_matching(@s.version_dir, %r!bin\.(\w+)!) { |match|
match.captures.first
}.reject { |platform|
platform =~ %r!java!
}.sort
end
def versions
remote_files_matching(SERVER_TOP_DIR, %r!r([0-8]\d\.\d)!) { |match|
match.captures.first
}.reject { |version|
HOSED_VERSIONS.include? version
}.sort
end
def latest_version
versions.last
end
def make(*args)
sys("make", *args)
end
def ruby(*args)
exe = Pathname.new(CONFIG["bindir"]) + CONFIG["RUBY_INSTALL_NAME"]
sys(exe.to_s, *args)
end
def build
puts "building..."
rm_rf(BUILD_DIR)
mkdir_p(BUILD_DIR)
@s.specs.each { |spec|
unpack(spec.local, BUILD_DIR)
}
Dir.chdir(BUILD_DIR) {
api_dir = Pathname.glob("p4api*").last
p4ruby_dir = Pathname.glob("p4ruby*").last
Dir.chdir(p4ruby_dir) {
ruby("p4conf.rb", "--apidir", "../#{api_dir}")
make
}
@s.p4ruby_build_dir = BUILD_DIR + p4ruby_dir
}
end
def raw_install_to_gem_install
RAW_INSTALL_FILES.zip(GEM_INSTALL_FILES) { |source, dest|
mkdir_p(dest.dirname)
puts "move #{source} --> #{dest}"
mv(source, dest)
}
end
def install
puts "installing..."
Dir.chdir(@s.p4ruby_build_dir) {
make("install")
}
if @s.gem_config
raw_install_to_gem_install
end
end
def verify_install(on_error = nil)
puts "verifying..."
files =
if @s.gem_config
GEM_INSTALL_FILES
else
RAW_INSTALL_FILES
end.map { |t| t.expand_path }
if files.all? { |t| t.exist? }
puts "Installed files:"
puts files
elsif on_error
install_fail(&on_error)
else
install_fail {
puts "These files were supposed to be installed, but were not:"
puts files
puts "Install failed!"
}
end
end
def windows_install
#
# For Windows, p4ruby is located in the p4api directory on the
# perforce server -- switcharoo --
#
spec = @s.p4api
version = [CONFIG["MAJOR"], CONFIG["MINOR"]].join
spec.basename = "p4ruby#{version}.exe"
fetch_spec(spec)
error = lambda {
puts "The Perforce P4Ruby Windows installer failed!"
puts "You may re-run it manually here:"
puts spec.local.expand_path
}
puts "running Perforce P4Ruby Windows installer..."
if system(spec.local, "/S", "/v/qn")
if @s.gem_config
sleep(1)
raw_install_to_gem_install
sleep(1)
unless system(spec.local, "/V", "/x", "/S", "/v/qn")
# We don't much care if this fails; just write to the log
puts "Note: the Perforce P4Ruby Windows uninstaller failed."
end
end
verify_install(error)
else
install_fail(&error)
end
end
def uninstall
RAW_INSTALL_FILES.each { |file|
if file.exist?
puts "delete #{file}"
rm_f(file)
end
}
end
end
#
# An OpenStruct with optional lazy-evaluated fields.
#
class LazyStruct < OpenStruct
#
# For mixing into an existing OpenStruct instance singleton class.
#
module Mixin
#
# &block is evaluated when this attribute is requested. The
# same result is returned for subsquent calls, until the field
# is assigned a different value.
#
def attribute(reader, &block)
singleton = (class << self ; self ; end)
singleton.instance_eval {
#
# Define a special reader method in the singleton class.
#
define_method(reader) {
block.call.tap { |value|
#
# The value has been computed. Replace this method with a
# one-liner giving the value.
#
singleton.instance_eval {
remove_method(reader)
define_method(reader) { value }
}
}
}
#
# Revert to the old OpenStruct behavior when the writer is called.
#
writer = "#{reader}=".to_sym
define_method(writer) { |value|
singleton.instance_eval {
remove_method(reader)
remove_method(writer)
}
method_missing(writer, value)
}
}
end
end
include Mixin
end
# version < 1.8.7 compatibility
module Kernel
unless respond_to? :tap
def tap
yield self
self
end
end
end
Installer.new.run