232 lines
6.9 KiB
Ruby
232 lines
6.9 KiB
Ruby
# frozen_string_literal: true
|
||
|
||
require "json"
|
||
require "optparse"
|
||
|
||
require "libptouch"
|
||
|
||
module Libptouch
|
||
module Cli
|
||
# PNG のみを扱う ptouch-print 相当の CLI（1bit ラスター経路なし）。
|
||
module PngPrint
|
||
module_function
|
||
|
||
def run(argv)
|
||
opts = parse(argv)
|
||
return 2 if opts.nil?
|
||
|
||
return run_version if opts[:version]
|
||
return run_help if opts[:help]
|
||
|
||
if opts[:status]
|
||
warn_unused_file_options(opts)
|
||
return run_status(opts)
|
||
end
|
||
|
||
return usage_error("-f is required (or use --status)") if opts[:file].to_s.empty?
|
||
|
||
path = opts[:file]
|
||
return usage_error("not a PNG file: #{path}") unless png_file?(path)
|
||
|
||
run_print(path, opts)
|
||
end
|
||
|
||
def png_file?(path)
|
||
return true if path.downcase.end_with?(".png")
|
||
|
||
File.open(path, "rb") do |f|
|
||
sig = f.read(8)
|
||
sig == "\x89PNG\r\n\x1a\n".b
|
||
end
|
||
rescue Errno::ENOENT, Errno::EACCES => e
|
||
warn "open #{path}: #{e.message}"
|
||
false
|
||
end
|
||
|
||
def parse(argv)
|
||
opts_hash = default_cli_opts
|
||
build_cli_parser(opts_hash).parse!(argv)
|
||
return nil unless threshold_option_ok?(opts_hash)
|
||
return nil unless usb_pid_option_ok?(opts_hash)
|
||
|
||
opts_hash.delete(:usb_pid_invalid)
|
||
opts_hash
|
||
end
|
||
|
||
def default_cli_opts
|
||
{
|
||
file: nil,
|
||
threshold: nil,
|
||
usb_pid: nil,
|
||
usb_pid_invalid: false,
|
||
dry_run: false,
|
||
status: false,
|
||
version: false,
|
||
help: false
|
||
}
|
||
end
|
||
|
||
def pid_option_description
|
||
p900 = Libptouch::USB_PID_PTP900W
|
||
p750 = Libptouch::USB_PID_PTP750W
|
||
p710 = Libptouch::USB_PID_PTP710BT
|
||
"USB 製品 ID（16 進可）。既定 P900W 0x#{p900.to_s(16)}; " \
|
||
"P750W 0x#{p750.to_s(16)}; P710BT 0x#{p710.to_s(16)}"
|
||
end
|
||
|
||
def apply_usb_pid_option(opts_hash, pid_str)
|
||
opts_hash[:usb_pid] = Integer(pid_str, 0)
|
||
rescue ArgumentError
|
||
warn "invalid --pid: #{pid_str.inspect}"
|
||
opts_hash[:usb_pid_invalid] = true
|
||
end
|
||
|
||
def threshold_option_ok?(opts_hash)
|
||
return true if opts_hash[:threshold].nil? || (0..255).cover?(opts_hash[:threshold])
|
||
|
||
warn "-t must be 0..255"
|
||
false
|
||
end
|
||
|
||
def usb_pid_option_ok?(opts_hash)
|
||
return false if opts_hash[:usb_pid_invalid]
|
||
return true if opts_hash[:usb_pid].nil?
|
||
return true if opts_hash[:usb_pid].between?(1, 0xFFFF)
|
||
|
||
warn "-p/--pid must be 1..0xFFFF"
|
||
false
|
||
end
|
||
|
||
def build_cli_parser(opts_hash)
|
||
OptionParser.new do |p|
|
||
p.banner = usage_banner
|
||
p.separator ""
|
||
p.on("-f", "--file PATH", "入力 PNG ファイル") { |v| opts_hash[:file] = v }
|
||
p.on("-t", "--threshold N", Integer,
|
||
"二値化しきい値 0–255（既定 #{Libptouch::PNG_DEFAULT_THRESHOLD}）") do |v|
|
||
opts_hash[:threshold] = v
|
||
end
|
||
p.on("-p", "--pid PID", pid_option_description) do |v|
|
||
apply_usb_pid_option(opts_hash, v)
|
||
end
|
||
p.on("-n", "--dry-run", "読み込みと検証のみ（USB なし）") { opts_hash[:dry_run] = true }
|
||
p.on("-S", "--status", "USB プリンタのステータスを JSON で表示して終了") do
|
||
opts_hash[:status] = true
|
||
end
|
||
p.on("-V", "--version", "バージョンを表示して終了") { opts_hash[:version] = true }
|
||
p.on("-h", "--help", "このヘルプ") { opts_hash[:help] = true }
|
||
end
|
||
end
|
||
|
||
def usage_banner
|
||
<<~BANNER
|
||
Usage: ptouch-print-png [options]
|
||
|
||
PNG のみ対応。幅・高さは画像から取得します（-w/-H はありません）。
|
||
--status のときは -f は不要です。
|
||
BANNER
|
||
end
|
||
|
||
def warn_unused_file_options(opts)
|
||
return unless opts[:file] || opts[:dry_run] || !opts[:threshold].nil?
|
||
|
||
warn "warning: options other than --status are ignored"
|
||
end
|
||
|
||
def run_version
|
||
puts "ptouch-print-png #{Libptouch::VERSION}"
|
||
0
|
||
end
|
||
|
||
def run_help
|
||
puts usage_banner
|
||
puts ""
|
||
puts parser_help_text
|
||
0
|
||
end
|
||
|
||
def parser_help_text
|
||
opts_hash = default_cli_opts
|
||
p = OptionParser.new do |parser|
|
||
parser.banner = "ptouch-print-png [options]"
|
||
parser.on("-f", "--file PATH", "入力 PNG ファイル") { |v| opts_hash[:file] = v }
|
||
parser.on("-t", "--threshold N", Integer,
|
||
"二値化しきい値 0–255（既定 #{Libptouch::PNG_DEFAULT_THRESHOLD}）") do |v|
|
||
opts_hash[:threshold] = v
|
||
end
|
||
parser.on("-p", "--pid PID", pid_option_description) do |v|
|
||
apply_usb_pid_option(opts_hash, v)
|
||
end
|
||
parser.on("-n", "--dry-run", "読み込みと検証のみ（USB なし）") { opts_hash[:dry_run] = true }
|
||
parser.on("-S", "--status", "USB プリンタのステータスを JSON で表示して終了") do
|
||
opts_hash[:status] = true
|
||
end
|
||
parser.on("-V", "--version", "バージョンを表示して終了") { opts_hash[:version] = true }
|
||
parser.on("-h", "--help", "このヘルプ") { opts_hash[:help] = true }
|
||
end
|
||
p.help
|
||
end
|
||
|
||
def open_usb_for_opts(ctx, opts)
|
||
if opts[:usb_pid]
|
||
ctx.open_usb_vid_pid(Libptouch::USB_VID_BROTHER, opts[:usb_pid])
|
||
else
|
||
ctx.open_usb
|
||
end
|
||
end
|
||
|
||
def run_status(opts)
|
||
ctx = nil
|
||
begin
|
||
ctx = Libptouch::Context.new
|
||
open_usb_for_opts(ctx, opts)
|
||
h = Libptouch.parse_status(ctx.status_bytes)
|
||
h.delete(:raw_bytes)
|
||
puts JSON.pretty_generate(h)
|
||
0
|
||
rescue Libptouch::Error => e
|
||
warn "get_status: #{e.message}"
|
||
1
|
||
ensure
|
||
ctx&.dispose
|
||
end
|
||
end
|
||
|
||
def run_print(path, opts)
|
||
ctx = nil
|
||
begin
|
||
ctx = Libptouch::Context.new
|
||
threshold = opts[:threshold]
|
||
data, width, height = if threshold.nil?
|
||
ctx.png_file_to_raster(path)
|
||
else
|
||
ctx.png_file_to_raster(path, threshold: threshold)
|
||
end
|
||
|
||
ctx.check_raster(data, width_dots: width, height_dots: height)
|
||
|
||
if opts[:dry_run]
|
||
puts "dry-run OK: #{data.bytesize} bytes, #{width}x#{height} dots"
|
||
return 0
|
||
end
|
||
|
||
open_usb_for_opts(ctx, opts)
|
||
ctx.print_raster(data, width_dots: width, height_dots: height)
|
||
0
|
||
rescue Libptouch::Error => e
|
||
warn e.message
|
||
1
|
||
ensure
|
||
ctx&.dispose
|
||
end
|
||
end
|
||
|
||
def usage_error(msg)
|
||
warn msg
|
||
warn "(try ptouch-print-png --help)"
|
||
2
|
||
end
|
||
end
|
||
end
|
||
end
|