Sha256: c0016f96b19deeaca8b4e5f89068f004c15227181a1bcd0178e7a5498f85ca4b
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Size: 1.85 KB
Versions: 32
Compression:
Stored size: 1.85 KB
Contents
require "extract_ttc/version"
require "ffi"
require "tempfile"
module ExtractTtc
class Error < StandardError; end
class ReadFileError < Error; end
class InvalidFileError < Error; end
class WriteFileError < Error; end
class UnknownResultError < Error; end
extend FFI::Library
# NOTE: ffi doesn't support bundles out of box https://github.com/ffi/ffi/issues/42#issuecomment-750031554
# NOTE: rake-compiler doesn't support dylib generation https://github.com/rake-compiler/rake-compiler/issues/183
lib_name = if File.exists?(File.join(File.dirname(__FILE__),
"stripttc.bundle"))
"stripttc.bundle"
else
"stripttc.so"
end
ffi_lib File.join(File.dirname(__FILE__), lib_name)
attach_function :handlefile, [:string], :int
def self.extract(path)
stdout, stderr, code = capture3 do
handlefile(path)
end
return handle_error(code, stderr) unless code.zero?
fetch_filenames(stdout)
end
def self.handle_error(code, stderr)
case code
when -1
raise ReadFileError, stderr
when -2
raise InvalidFileError, stderr
when -3
raise WriteFileError, stderr
else
raise UnknownResultError, "Return code: #{code}"
end
end
def self.capture3
stderr = status = nil
stdout = capture_stream($stdout) do
stderr = capture_stream($stderr) do
status = yield
end
end
[stdout, stderr, status]
end
def self.capture_stream(stream_io)
origin_stream = stream_io.dup
Tempfile.open("captured_stream") do |captured_stream|
stream_io.reopen(captured_stream)
yield
captured_stream.rewind
return captured_stream.read
end
ensure
stream_io.reopen(origin_stream)
end
def self.fetch_filenames(stdout)
stdout.split("=>").last.split
end
end
Version data entries
32 entries across 32 versions & 1 rubygems