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require "Subprocess" | |
require "tmpdir" | |
# | |
# Currently will only convert a single swift code file into a static library | |
# and cannot include any Objective-C code. | |
# | |
# Usage: generate("/path/to/MyCode.swift", :ios) | |
# | |
def generate(file, platform, dst=nil) | |
name = File.basename(file).split(".")[0] | |
build_path = Dir.mktmpdir | |
output_path = (dst) ? File.join(dst, name) : File.expand_path("../#{name}", __FILE__) | |
sdks = [] | |
target = "" | |
if platform == :ios | |
sdks = { | |
"iphoneos" => {"armv7" => "arm", "arm64" => "arm64"}, | |
"iphonesimulator" => {"i386" => "i386", "x86_64" => "x86_64"} | |
} | |
target = "apple-ios7.0" | |
elsif platform == :osx | |
sdks = { | |
"macosx" => {"i386" => "i386", "x86_64" => "x86_64"} | |
} | |
target = "apple-macosx10.10" | |
end | |
FileUtils.rm_r(build_path) if File.exists?(build_path) | |
Dir.mkdir(build_path) | |
return if sdks.length == 0 | |
sdks.each do |sdk, archs| | |
sdk_path = Subprocess.check_output(["xcrun", "--show-sdk-path", "--sdk", sdk]).chop | |
archs.each do |arch_name, arch_output_name| | |
puts "----> Generating files for #{arch_name}" | |
module_path = File.join(build_path, "#{arch_output_name}.swiftmodule") | |
module_doc_path = File.join(build_path, "#{arch_output_name}.swiftdoc") | |
dylib_path = File.join(build_path, "#{arch_output_name}.dylib") | |
object_path = File.join(build_path, "#{arch_output_name}.o") | |
header_path = File.join(build_path, "#{name}.h") | |
Subprocess.check_output([ | |
"xcrun", | |
"swiftc", | |
"-sdk", sdk_path, | |
"-target", "#{arch_name}-#{target}", | |
"-emit-objc-header", | |
"-emit-module", | |
"-emit-library", | |
"-module-name", "#{name}", | |
"-module-link-name", "swift#{name}", | |
"-g", | |
"-j8", | |
"-O", | |
"-o", dylib_path, | |
file | |
]) | |
Subprocess.check_output([ | |
"xcrun", | |
"swiftc", | |
"-sdk", sdk_path, | |
"-target", "#{arch_name}-#{target}", | |
"-module-name", "#{name}", | |
"-parse-as-library", | |
"-g", | |
"-j8", | |
"-o", object_path, | |
"-O", | |
"-c", file | |
]) | |
Subprocess.check_output([ | |
"libtool", | |
"-static", | |
object_path, | |
"-o", | |
File.join(build_path, "#{arch_output_name}.a"), | |
]) | |
FileUtils.mv(File.join(build_path, "#{name}.swiftmodule"), module_path) | |
FileUtils.mv(File.join(build_path, "#{name}.swiftdoc"), module_doc_path) | |
end | |
end | |
puts "----> Packaging" | |
FileUtils.rm_r(output_path) if File.exists?(output_path) | |
Dir.mkdir(output_path) | |
Dir.mkdir(File.join(output_path, "Headers")) | |
Dir.mkdir(File.join(output_path, "#{name}.swiftmodule")) | |
Dir["#{build_path}/*.h"].each do |f| | |
FileUtils.cp(f, File.join(output_path, "Headers", File.basename(f))) | |
end | |
Dir["#{build_path}/*.swiftmodule"].each do |f| | |
FileUtils.cp(f, File.join(output_path, "#{name}.swiftmodule", File.basename(f))) | |
end | |
Dir["#{build_path}/*.swiftdoc"].each do |f| | |
FileUtils.cp(f, File.join(output_path, "#{name}.swiftmodule", File.basename(f))) | |
end | |
File.open(File.join(output_path, "module.modulemap"), "w+") do |fh| | |
fh << """framework module #{name} { | |
header \"#{name}.h\" | |
export * | |
}""" | |
end | |
args = [ | |
"lipo", | |
"-create" | |
] | |
Dir["#{build_path}/*.a"].each do |archive| | |
args << archive | |
end | |
args += ["-o", File.join(output_path, "libswift#{name}.a")] | |
Subprocess.check_output(args) | |
puts "----> Finished '#{output_path}'" | |
rescue => e | |
puts "----> Failed #{e.message}" | |
ensure | |
FileUtils.rm_r(build_path) | |
end |
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