able/qrcode-rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

Rustfmt and clippy.

Browse source
This commit is contained in:
kennytm 2017-11-07 16:23:50 +08:00
parent 8be25fa56a
commit 21efb6205e
18 changed files with 1948 additions and 1324 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
.travis.yml
View file

@ -15,20 +15,16 @@ addons:
matrix:
include:
- os: linux
rust: 1.17.0
rust: 1.20.0
- os: linux
rust: 1.21.0
rust: stable
- os: osx
rust: 1.21.0
rust: stable
- os: linux
rust: beta
- os: linux
rust: nightly
matrix:
allow_failures:
- rust: beta
install:
- if [ "$TRAVIS_OS_NAME" = 'linux' ]; then OS=unknown-linux-gnu; else OS=apple-darwin; fi
- rustup target add i686-$OS

1
Cargo.toml
View file

@ -21,6 +21,7 @@ maintenance = { status = "passively-maintained" }
[dependencies]
image = { version = "0.17", optional = true }
checked_int_cast = "1"
[features]
default = ["image", "svg"]

4
README.md
View file

@ -13,14 +13,14 @@ Cargo.toml
```toml
[dependencies]
qrcode = "0.4"
qrcode = "0.5"
```
The default settings will depend on the `image` crate. If you don't need image generation capability, disable the `default-features`:
```toml
[dependencies]
qrcode = { version = "0.4", default-features = false }
qrcode = { version = "0.5", default-features = false }
```
Example

2
examples/encode_image.rs
View file

@ -1,5 +1,5 @@
extern crate qrcode;
extern crate image;
extern crate qrcode;
use qrcode::QrCode;
use image::Luma;

2
examples/encode_svg.rs
View file

@ -1,6 +1,6 @@
extern crate qrcode;
use qrcode::{QrCode, Version, EcLevel};
use qrcode::{EcLevel, QrCode, Version};
use qrcode::render::svg;
fn main() {

8
rustfmt.toml Normal file
View file

@ -0,0 +1,8 @@
array_width = 100
chain_width = 100
fn_call_width = 100
# single_line_if_else_max_width = 100
struct_lit_width = 100
struct_variant_width = 100
error_on_line_overflow = false

12
src/bin/qrencode.rs
View file

@ -6,9 +6,11 @@ pub fn main() {
let arg = env::args().nth(1).unwrap();
let code = qrcode::QrCode::new(arg.as_bytes()).unwrap();
print!("{}", code.render()
.dark_color("\x1b[7m \x1b[0m")
.light_color("\x1b[49m \x1b[0m")
.build());
print!(
"{}",
code.render()
.dark_color("\x1b[7m \x1b[0m")
.light_color("\x1b[49m \x1b[0m")
.build()
);
}

360
src/bits.rs
View file

@ -2,11 +2,12 @@
use std::cmp::min;
#[cfg(feature="bench")]
#[cfg(feature = "bench")]
use test::Bencher;
use types::{QrResult, QrError, Mode, EcLevel, Version};
use optimize::{Parser, Optimizer, total_encoded_len, Segment};
use types::{EcLevel, Mode, QrError, QrResult, Version};
use optimize::{total_encoded_len, Optimizer, Parser, Segment};
use cast::{As, Truncate};
//------------------------------------------------------------------------------
//{{{ Bits
@ -20,8 +21,8 @@ pub struct Bits {
impl Bits {
/// Constructs a new, empty bits structure.
pub fn new(version: Version) -> Bits {
Bits { data: Vec::new(), bit_offset: 0, version: version }
pub fn new(version: Version) -> Self {
Self { data: Vec::new(), bit_offset: 0, version: version }
}
/// Pushes an N-bit big-endian integer to the end of the bits.
@ -30,29 +31,34 @@ impl Bits {
/// `n` bit in size. Otherwise the excess bits may stomp on the existing
/// ones.
fn push_number(&mut self, n: usize, number: u16) {
debug_assert!(n == 16 || n < 16 && number < (1 << n),
"{} is too big as a {}-bit number", number, n);
debug_assert!(
n == 16 || n < 16 && number < (1 << n),
"{} is too big as a {}-bit number",
number,
n
);
let b = self.bit_offset + n;
let last_index = self.data.len().wrapping_sub(1);
match (self.bit_offset, b) {
(0, 0...8) => {
self.data.push((number << (8-b)) as u8);
self.data.push((number << (8 - b)).truncate_as_u8());
}
(0, _) => {
self.data.push((number >> (b-8)) as u8);
self.data.push((number << (16-b)) as u8);
self.data.push((number >> (b - 8)).truncate_as_u8());
self.data.push((number << (16 - b)).truncate_as_u8());
}
(_, 0...8) => {
*self.data.last_mut().unwrap() |= (number << (8-b)) as u8;
self.data[last_index] |= (number << (8 - b)).truncate_as_u8();
}
(_, 9...16) => {
*self.data.last_mut().unwrap() |= (number >> (b-8)) as u8;
self.data.push((number << (16-b)) as u8);
self.data[last_index] |= (number >> (b - 8)).truncate_as_u8();
self.data.push((number << (16 - b)).truncate_as_u8());
}
_ => {
*self.data.last_mut().unwrap() |= (number >> (b-8)) as u8;
self.data.push((number >> (b-16)) as u8);
self.data.push((number << (24-b)) as u8);
self.data[last_index] |= (number >> (b - 8)).truncate_as_u8();
self.data.push((number >> (b - 16)).truncate_as_u8());
self.data.push((number << (24 - b)).truncate_as_u8());
}
}
self.bit_offset = b & 7;
@ -66,7 +72,7 @@ impl Bits {
if n > 16 || number >= (1 << n) {
Err(QrError::DataTooLong)
} else {
self.push_number(n, number as u16);
self.push_number(n, number.as_u16());
Ok(())
}
}
@ -91,6 +97,11 @@ impl Bits {
}
}
/// Whether there are any bits pushed.
pub fn is_empty(&self) -> bool {
self.data.is_empty()
}
/// The maximum number of bits allowed by the provided QR code version and
/// error correction level.
pub fn max_len(&self, ec_level: EcLevel) -> QrResult<usize> {
@ -107,34 +118,39 @@ impl Bits {
fn test_push_number() {
let mut bits = Bits::new(Version::Normal(1));
bits.push_number(3, 0b010); // 0:0 .. 0:3
bits.push_number(3, 0b110); // 0:3 .. 0:6
bits.push_number(3, 0b101); // 0:6 .. 1:1
bits.push_number(7, 0b001_1010);// 1:1 .. 2:0
bits.push_number(4, 0b1100); // 2:0 .. 2:4
bits.push_number(3, 0b010); // 0:0 .. 0:3
bits.push_number(3, 0b110); // 0:3 .. 0:6
bits.push_number(3, 0b101); // 0:6 .. 1:1
bits.push_number(7, 0b001_1010); // 1:1 .. 2:0
bits.push_number(4, 0b1100); // 2:0 .. 2:4
bits.push_number(12, 0b1011_0110_1101); // 2:4 .. 4:0
bits.push_number(10, 0b01_1001_0001); // 4:0 .. 5:2
bits.push_number(10, 0b01_1001_0001); // 4:0 .. 5:2
bits.push_number(15, 0b111_0010_1110_0011); // 5:2 .. 7:1
let bytes = bits.into_bytes();
assert_eq!(bytes, vec![0b010__110__10, // 90
0b1__001_1010, // 154
0b1100__1011, // 203
0b0110_1101, // 109
0b01_1001_00, // 100
0b01__111_001, // 121
0b0_1110_001, // 113
0b1__0000000]); // 128
assert_eq!(
bytes,
vec![
0b010__110__10, // 90
0b1__001_1010, // 154
0b1100__1011, // 203
0b0110_1101, // 109
0b01_1001_00, // 100
0b01__111_001, // 121
0b0_1110_001, // 113
0b1__0000000, // 128
]
);
}
#[cfg(feature="bench")]
#[cfg(feature = "bench")]
#[bench]
fn bench_push_splitted_bytes(bencher: &mut Bencher) {
bencher.iter(|| {
let mut bits = Bits::new(Version::Normal(40));
bits.push_number(4, 0b0101);
for _ in 0 .. 1024 {
for _ in 0..1024 {
bits.push_number(8, 0b10101010);
}
bits.into_bytes()
@ -171,6 +187,7 @@ impl Bits {
/// If the mode is not supported in the provided version, this method
/// returns `Err(QrError::UnsupportedCharacterSet)`.
pub fn push_mode_indicator(&mut self, mode: ExtendedMode) -> QrResult<()> {
#[cfg_attr(feature = "cargo-clippy", allow(match_same_arms))]
let number = match (self.version, mode) {
(Version::Micro(1), ExtendedMode::Data(Mode::Numeric)) => return Ok(()),
(Version::Micro(_), ExtendedMode::Data(Mode::Numeric)) => 0,
@ -188,7 +205,8 @@ impl Bits {
(_, ExtendedMode::StructuredAppend) => 0b0011,
};
let bits = self.version.mode_bits_count();
self.push_number_checked(bits, number).or(Err(QrError::UnsupportedCharacterSet))
self.push_number_checked(bits, number)
.or(Err(QrError::UnsupportedCharacterSet))
}
}
@ -234,19 +252,19 @@ impl Bits {
/// return `Err(QrError::InvalidECIDesignator)`.
pub fn push_eci_designator(&mut self, eci_designator: u32) -> QrResult<()> {
self.reserve(12); // assume the common case that eci_designator <= 127.
try!(self.push_mode_indicator(ExtendedMode::Eci));
self.push_mode_indicator(ExtendedMode::Eci)?;
match eci_designator {
0...127 => {
self.push_number(8, eci_designator as u16);
self.push_number(8, eci_designator.as_u16());
}
128...16383 => {
self.push_number(2, 0b10);
self.push_number(14, eci_designator as u16);
self.push_number(14, eci_designator.as_u16());
}
16384...999999 => {
self.push_number(3, 0b110);
self.push_number(5, (eci_designator >> 16) as u16);
self.push_number(16, (eci_designator & 0xffff) as u16);
self.push_number(5, (eci_designator >> 16).as_u16());
self.push_number(16, (eci_designator & 0xffff).as_u16());
}
_ => return Err(QrError::InvalidEciDesignator),
}
@ -257,7 +275,7 @@ impl Bits {
#[cfg(test)]
mod eci_tests {
use bits::Bits;
use types::{Version, QrError};
use types::{QrError, Version};
#[test]
fn test_9() {
@ -277,10 +295,7 @@ mod eci_tests {
fn test_999999() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_eci_designator(999999), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b0111__110_0,
0b11110100,
0b00100011,
0b1111__0000]);
assert_eq!(bits.into_bytes(), vec![0b0111__110_0, 0b11110100, 0b00100011, 0b1111__0000]);
}
#[test]
@ -304,8 +319,8 @@ impl Bits {
fn push_header(&mut self, mode: Mode, raw_data_len: usize) -> QrResult<()> {
let length_bits = mode.length_bits_count(self.version);
self.reserve(length_bits + 4 + mode.data_bits_count(raw_data_len));
try!(self.push_mode_indicator(ExtendedMode::Data(mode)));
try!(self.push_number_checked(length_bits, raw_data_len));
self.push_mode_indicator(ExtendedMode::Data(mode))?;
self.push_number_checked(length_bits, raw_data_len)?;
Ok(())
}
@ -313,9 +328,12 @@ impl Bits {
///
/// The data should only contain the characters 0 to 9.
pub fn push_numeric_data(&mut self, data: &[u8]) -> QrResult<()> {
try!(self.push_header(Mode::Numeric, data.len()));
self.push_header(Mode::Numeric, data.len())?;
for chunk in data.chunks(3) {
let number = chunk.iter().map(|b| (*b - b'0') as u16).fold(0, |a, b| a*10 + b);
let number = chunk
.iter()
.map(|b| u16::from(*b - b'0'))
.fold(0, |a, b| a * 10 + b);
let length = chunk.len() * 3 + 1;
self.push_number(length, number);
}
@ -326,47 +344,55 @@ impl Bits {
#[cfg(test)]
mod numeric_tests {
use bits::Bits;
use types::{Version, QrError};
use types::{QrError, Version};
#[test]
fn test_iso_18004_2006_example_1() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_numeric_data(b"01234567"), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b0001_0000,
0b001000_00,
0b00001100,
0b01010110,
0b01_100001,
0b1__0000000]);
assert_eq!(
bits.into_bytes(),
vec![0b0001_0000, 0b001000_00, 0b00001100, 0b01010110, 0b01_100001, 0b1__0000000]
);
}
#[test]
fn test_iso_18004_2000_example_2() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_numeric_data(b"0123456789012345"), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b0001_0000,
0b010000_00,
0b00001100,
0b01010110,
0b01_101010,
0b0110_1110,
0b000101_00,
0b11101010,
0b0101__0000]);
assert_eq!(
bits.into_bytes(),
vec![
0b0001_0000,
0b010000_00,
0b00001100,
0b01010110,
0b01_101010,
0b0110_1110,
0b000101_00,
0b11101010,
0b0101__0000,
]
);
}
#[test]
fn test_iso_18004_2006_example_2() {
let mut bits = Bits::new(Version::Micro(3));
assert_eq!(bits.push_numeric_data(b"0123456789012345"), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b00_10000_0,
0b00000110,
0b0_0101011,
0b001_10101,
0b00110_111,
0b0000101_0,
0b01110101,
0b00101__000]);
assert_eq!(
bits.into_bytes(),
vec![
0b00_10000_0,
0b00000110,
0b0_0101011,
0b001_10101,
0b00110_111,
0b0000101_0,
0b01110101,
0b00101__000,
]
);
}
#[test]
@ -380,16 +406,16 @@ mod numeric_tests {
//------------------------------------------------------------------------------
//{{{ Mode::Alphanumeric mode
/// In QR code "Mode::Alphanumeric" mode, a pair of alphanumeric characters will be
/// encoded as a base-45 integer. `alphanumeric_digit` converts each character
/// into its corresponding base-45 digit.
/// In QR code `Mode::Alphanumeric` mode, a pair of alphanumeric characters will
/// be encoded as a base-45 integer. `alphanumeric_digit` converts each
/// character into its corresponding base-45 digit.
///
/// The conversion is specified in ISO/IEC 18004:2006, §8.4.3, Table 5.
#[inline]
fn alphanumeric_digit(character: u8) -> u16 {
match character {
b'0' ... b'9' => (character - b'0') as u16,
b'A' ... b'Z' => (character - b'A') as u16 + 10,
b'0'...b'9' => u16::from(character - b'0'),
b'A'...b'Z' => u16::from(character - b'A') + 10,
b' ' => 36,
b'$' => 37,
b'%' => 38,
@ -409,9 +435,12 @@ impl Bits {
/// The data should only contain the charaters A to Z (excluding lowercase),
/// 0 to 9, space, `$`, `%`, `*`, `+`, `-`, `.`, `/` or `:`.
pub fn push_alphanumeric_data(&mut self, data: &[u8]) -> QrResult<()> {
try!(self.push_header(Mode::Alphanumeric, data.len()));
self.push_header(Mode::Alphanumeric, data.len())?;
for chunk in data.chunks(2) {
let number = chunk.iter().map(|b| alphanumeric_digit(*b)).fold(0, |a, b| a*45 + b);
let number = chunk
.iter()
.map(|b| alphanumeric_digit(*b))
.fold(0, |a, b| a * 45 + b);
let length = chunk.len() * 5 + 1;
self.push_number(length, number);
}
@ -422,18 +451,16 @@ impl Bits {
#[cfg(test)]
mod alphanumeric_tests {
use bits::Bits;
use types::{Version, QrError};
use types::{QrError, Version};
#[test]
fn test_iso_18004_2006_example() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_alphanumeric_data(b"AC-42"), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b0010_0000,
0b00101_001,
0b11001110,
0b11100111,
0b001_00001,
0b0__0000000]);
assert_eq!(
bits.into_bytes(),
vec![0b0010_0000, 0b00101_001, 0b11001110, 0b11100111, 0b001_00001, 0b0__0000000]
);
}
#[test]
@ -456,9 +483,9 @@ mod alphanumeric_tests {
impl Bits {
/// Encodes 8-bit byte data to the bits.
pub fn push_byte_data(&mut self, data: &[u8]) -> QrResult<()> {
try!(self.push_header(Mode::Byte, data.len()));
self.push_header(Mode::Byte, data.len())?;
for b in data {
self.push_number(8, *b as u16);
self.push_number(8, u16::from(*b));
}
Ok(())
}
@ -467,22 +494,27 @@ impl Bits {
#[cfg(test)]
mod byte_tests {
use bits::Bits;
use types::{Version, QrError};
use types::{QrError, Version};
#[test]
fn test() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_byte_data(b"\x12\x34\x56\x78\x9a\xbc\xde\xf0"), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b0100_0000,
0b1000_0001,
0b0010_0011,
0b0100_0101,
0b0110_0111,
0b1000_1001,
0b1010_1011,
0b1100_1101,
0b1110_1111,
0b0000__0000]);
assert_eq!(
bits.into_bytes(),
vec![
0b0100_0000,
0b1000_0001,
0b0010_0011,
0b0100_0101,
0b0110_0111,
0b1000_1001,
0b1010_1011,
0b1100_1101,
0b1110_1111,
0b0000__0000,
]
);
}
#[test]
@ -505,13 +537,17 @@ mod byte_tests {
impl Bits {
/// Encodes Shift JIS double-byte data to the bits.
pub fn push_kanji_data(&mut self, data: &[u8]) -> QrResult<()> {
try!(self.push_header(Mode::Kanji, data.len()/2));
self.push_header(Mode::Kanji, data.len() / 2)?;
for kanji in data.chunks(2) {
if kanji.len() != 2 {
return Err(QrError::InvalidCharacter);
}
let cp = (kanji[0] as u16) * 256 + (kanji[1] as u16);
let bytes = if cp < 0xe040 { cp - 0x8140 } else { cp - 0xc140 };
let cp = u16::from(kanji[0]) * 256 + u16::from(kanji[1]);
let bytes = if cp < 0xe040 {
cp - 0x8140
} else {
cp - 0xc140
};
let number = (bytes >> 8) * 0xc0 + (bytes & 0xff);
self.push_number(13, number);
}
@ -522,17 +558,16 @@ impl Bits {
#[cfg(test)]
mod kanji_tests {
use bits::Bits;
use types::{Version, QrError};
use types::{QrError, Version};
#[test]
fn test_iso_18004_example() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_kanji_data(b"\x93\x5f\xe4\xaa"), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b1000_0000,
0b0010_0110,
0b11001111,
0b1_1101010,
0b101010__00]);
assert_eq!(
bits.into_bytes(),
vec![0b1000_0000, 0b0010_0110, 0b11001111, 0b1_1101010, 0b101010__00]
);
}
#[test]
@ -544,8 +579,10 @@ mod kanji_tests {
#[test]
fn test_data_too_long() {
let mut bits = Bits::new(Version::Micro(3));
assert_eq!(bits.push_kanji_data(b"\x93_\x93_\x93_\x93_\x93_\x93_\x93_\x93_"),
Err(QrError::DataTooLong));
assert_eq!(
bits.push_kanji_data(b"\x93_\x93_\x93_\x93_\x93_\x93_\x93_\x93_"),
Err(QrError::DataTooLong)
);
}
}
@ -593,8 +630,8 @@ impl Bits {
/// bits.push_fnc1_second_position(b'A' + 100);
/// ```
pub fn push_fnc1_second_position(&mut self, application_indicator: u8) -> QrResult<()> {
try!(self.push_mode_indicator(ExtendedMode::Fnc1Second));
self.push_number(8, application_indicator as u16);
self.push_mode_indicator(ExtendedMode::Fnc1Second)?;
self.push_number(8, u16::from(application_indicator));
Ok(())
}
}
@ -646,7 +683,6 @@ static DATA_LENGTHS: [[usize; 4]; 44] = [
[21616, 16816, 12016, 9136],
[22496, 17728, 12656, 9776],
[23648, 18672, 13328, 10208],
// Micro versions
[20, 0, 0, 0],
[40, 32, 0, 0],
@ -658,12 +694,12 @@ impl Bits {
/// Pushes the ending bits to indicate no more data.
pub fn push_terminator(&mut self, ec_level: EcLevel) -> QrResult<()> {
let terminator_size = match self.version {
Version::Micro(a) => (a as usize) * 2 + 1,
Version::Micro(a) => a.as_usize() * 2 + 1,
_ => 4,
};
let cur_length = self.len();
let data_length = try!(self.max_len(ec_level));
let data_length = self.max_len(ec_level)?;
if cur_length > data_length {
return Err(QrError::DataTooLong);
}
@ -679,7 +715,11 @@ impl Bits {
self.bit_offset = 0;
let data_bytes_length = data_length / 8;
let padding_bytes_count = data_bytes_length - self.data.len();
let padding = PADDING_BYTES.iter().cloned().cycle().take(padding_bytes_count);
let padding = PADDING_BYTES
.iter()
.cloned()
.cycle()
.take(padding_bytes_count);
self.data.extend(padding);
}
@ -694,18 +734,31 @@ impl Bits {
#[cfg(test)]
mod finish_tests {
use bits::Bits;
use types::{Version, EcLevel, QrError};
use types::{EcLevel, QrError, Version};
#[test]
fn test_hello_world() {
let mut bits = Bits::new(Version::Normal(1));
assert_eq!(bits.push_alphanumeric_data(b"HELLO WORLD"), Ok(()));
assert_eq!(bits.push_terminator(EcLevel::Q), Ok(()));
assert_eq!(bits.into_bytes(), vec![0b00100000, 0b01011011, 0b00001011,
0b01111000, 0b11010001, 0b01110010,
0b11011100, 0b01001101, 0b01000011,
0b01000000, 0b11101100, 0b00010001,
0b11101100]);
assert_eq!(
bits.into_bytes(),
vec![
0b00100000,
0b01011011,
0b00001011,
0b01111000,
0b11010001,
0b01110010,
0b11011100,
0b01001101,
0b01000011,
0b01000000,
0b11101100,
0b00010001,
0b11101100,
]
);
}
#[test]
@ -755,16 +808,17 @@ mod finish_tests {
impl Bits {
/// Push a segmented data to the bits, and then terminate it.
pub fn push_segments<I>(&mut self, data: &[u8], segments_iter: I) -> QrResult<()>
where I: Iterator<Item=Segment>
where
I: Iterator<Item = Segment>,
{
for segment in segments_iter {
let slice = &data[segment.begin .. segment.end];
try!(match segment.mode {
let slice = &data[segment.begin..segment.end];
match segment.mode {
Mode::Numeric => self.push_numeric_data(slice),
Mode::Alphanumeric => self.push_alphanumeric_data(slice),
Mode::Byte => self.push_byte_data(slice),
Mode::Kanji => self.push_kanji_data(slice),
});
}?;
}
Ok(())
}
@ -774,36 +828,50 @@ impl Bits {
let segments = Parser::new(data).optimize(self.version);
self.push_segments(data, segments)
}
}
#[cfg(test)]
mod encode_tests {
use bits::Bits;
use types::{Version, QrError, QrResult, EcLevel};
use types::{EcLevel, QrError, QrResult, Version};
fn encode(data: &[u8], version: Version, ec_level: EcLevel) -> QrResult<Vec<u8>> {
let mut bits = Bits::new(version);
try!(bits.push_optimal_data(data));
try!(bits.push_terminator(ec_level));
bits.push_optimal_data(data)?;
bits.push_terminator(ec_level)?;
Ok(bits.into_bytes())
}
#[test]
fn test_alphanumeric() {
let res = encode(b"HELLO WORLD", Version::Normal(1), EcLevel::Q);
assert_eq!(res, Ok(vec![0b00100000, 0b01011011, 0b00001011,
0b01111000, 0b11010001, 0b01110010,
0b11011100, 0b01001101, 0b01000011,
0b01000000, 0b11101100, 0b00010001,
0b11101100]));
assert_eq!(
res,
Ok(vec![
0b00100000,
0b01011011,
0b00001011,
0b01111000,
0b11010001,
0b01110010,
0b11011100,
0b01001101,
0b01000011,
0b01000000,
0b11101100,
0b00010001,
0b11101100,
])
);
}
#[test]
fn test_auto_mode_switch() {
let res = encode(b"123A", Version::Micro(2), EcLevel::L);
assert_eq!(res, Ok(vec![0b0_0011_000, 0b1111011_1, 0b001_00101,
0b0_00000__00, 0b11101100]));
assert_eq!(
res,
Ok(vec![0b0_0011_000, 0b1111011_1, 0b001_00101, 0b0_00000__00, 0b11101100])
);
}
#[test]
@ -824,15 +892,17 @@ mod encode_tests {
pub fn encode_auto(data: &[u8], ec_level: EcLevel) -> QrResult<Bits> {
let segments = Parser::new(data).collect::<Vec<Segment>>();
for version in &[Version::Normal(9), Version::Normal(26), Version::Normal(40)] {
let opt_segments = Optimizer::new(segments.iter().map(|s| *s), *version).collect::<Vec<_>>();
let opt_segments = Optimizer::new(segments.iter().cloned(), *version).collect::<Vec<_>>();
let total_len = total_encoded_len(&*opt_segments, *version);
let data_capacity = version.fetch(ec_level, &DATA_LENGTHS).unwrap();
let data_capacity = version
.fetch(ec_level, &DATA_LENGTHS)
.expect("invalid DATA_LENGTHS");
if total_len <= data_capacity {
let min_version = find_min_version(total_len, ec_level);
let mut bits = Bits::new(min_version);
bits.reserve(total_len);
try!(bits.push_segments(data, opt_segments.into_iter()));
try!(bits.push_terminator(ec_level));
bits.push_segments(data, opt_segments.into_iter())?;
bits.push_terminator(ec_level)?;
return Ok(bits);
}
}
@ -852,13 +922,13 @@ fn find_min_version(length: usize, ec_level: EcLevel) -> Version {
max = half;
}
}
Version::Normal((min + 1) as i16)
Version::Normal((min + 1).as_i16())
}
#[cfg(test)]
mod encode_auto_tests {
use bits::{find_min_version, encode_auto};
use types::{Version, EcLevel};
use bits::{encode_auto, find_min_version};
use types::{EcLevel, Version};
#[test]
fn test_find_min_version() {
@ -893,5 +963,3 @@ mod encode_auto_tests {
//}}}
//------------------------------------------------------------------------------

1615
src/canvas.rs
View file

File diff suppressed because it is too large Load diff

90
src/cast.rs Normal file
View file

@ -0,0 +1,90 @@
use std::fmt::Display;
#[cfg(debug_assertions)]
use checked_int_cast::CheckedIntCast;
pub trait Truncate {
fn truncate_as_u8(self) -> u8;
}
impl Truncate for u16 {
#[cfg_attr(feature = "cargo-clippy", allow(cast_possible_truncation))]
fn truncate_as_u8(self) -> u8 {
(self & 0xff) as u8
}
}
pub trait As {
fn as_u16(self) -> u16;
fn as_i16(self) -> i16;
fn as_u32(self) -> u32;
fn as_usize(self) -> usize;
fn as_isize(self) -> isize;
}
trait ExpectOrOverflow {
type Output;
fn expect_or_overflow<D: Display>(self, value: D, ty: &str) -> Self::Output;
}
impl<T> ExpectOrOverflow for Option<T> {
type Output = T;
fn expect_or_overflow<D: Display>(self, value: D, ty: &str) -> Self::Output {
match self {
Some(v) => v,
None => panic!("{} overflows {}", value, ty),
}
}
}
macro_rules! impl_as {
($ty:ty) => {
#[cfg(debug_assertions)]
impl As for $ty {
fn as_u16(self) -> u16 {
self.as_u16_checked().expect_or_overflow(self, "u16")
}
fn as_i16(self) -> i16 {
self.as_i16_checked().expect_or_overflow(self, "i16")
}
fn as_u32(self) -> u32 {
self.as_u32_checked().expect_or_overflow(self, "u32")
}
fn as_usize(self) -> usize {
self.as_usize_checked().expect_or_overflow(self, "usize")
}
fn as_isize(self) -> isize {
self.as_isize_checked().expect_or_overflow(self, "usize")
}
}
#[cfg(not(debug_assertions))]
#[cfg_attr(feature = "cargo-clippy", allow(cast_possible_truncation))]
impl As for $ty {
fn as_u16(self) -> u16 {
self as u16
}
fn as_i16(self) -> i16 {
self as i16
}
fn as_u32(self) -> u32 {
self as u32
}
fn as_usize(self) -> usize {
self as usize
}
fn as_isize(self) -> isize {
self as isize
}
}
}
}
impl_as!(i16);
impl_as!(u32);
impl_as!(usize);
impl_as!(isize);

304
src/ec.rs
View file

@ -1,9 +1,8 @@
//! The `ec` module applies the Reed-Solomon error correction codes.
use std::iter::repeat;
use std::ops::Deref;
use types::{QrResult, Version, EcLevel};
use types::{EcLevel, QrResult, Version};
//------------------------------------------------------------------------------
//{{{ Error correction primitive
@ -18,25 +17,27 @@ use types::{QrResult, Version, EcLevel};
/// GF(256), and then computes the polynomial modulus with a generator
/// polynomial of degree N.
pub fn create_error_correction_code(data: &[u8], ec_code_size: usize) -> Vec<u8> {
let mut res = data.to_vec();
res.extend(repeat(0).take(ec_code_size));
let data_len = data.len();
let log_den = GENERATOR_POLYNOMIALS[ec_code_size];
for i in 0 .. data_len {
let mut res = data.to_vec();
res.resize(ec_code_size + data_len, 0);
// rust-lang-nursery/rust-clippy#2213
#[cfg_attr(feature = "cargo-clippy", allow(needless_range_loop))]
for i in 0..data_len {
let lead_coeff = res[i] as usize;
if lead_coeff == 0 {
continue;
}
let log_lead_coeff = LOG_TABLE[lead_coeff] as usize;
for (u, v) in res[i+1 ..].iter_mut().zip(log_den.iter()) {
*u ^= EXP_TABLE[((*v as usize + log_lead_coeff) % 255) as usize];
let log_lead_coeff = usize::from(LOG_TABLE[lead_coeff]);
for (u, v) in res[i + 1..].iter_mut().zip(log_den.iter()) {
*u ^= EXP_TABLE[(usize::from(*v) + log_lead_coeff) % 255];
}
}
res.into_iter().skip(data_len).collect()
res.split_off(data_len)
}
#[cfg(test)]
@ -73,10 +74,10 @@ mod ec_tests {
///
/// The longest slice must be at the last of `blocks`, and `blocks` must not be
/// empty.
fn interleave<T: Copy, V: Deref<Target=[T]>>(blocks: &Vec<V>) -> Vec<T> {
let last_block_len = blocks.last().unwrap().len();
fn interleave<T: Copy, V: Deref<Target = [T]>>(blocks: &[V]) -> Vec<T> {
let last_block_len = blocks.last().expect("non-empty blocks").len();
let mut res = Vec::with_capacity(last_block_len * blocks.len());
for i in 0 .. last_block_len {
for i in 0..last_block_len {
for t in blocks {
if i < t.len() {
res.push(t[i]);
@ -88,7 +89,7 @@ fn interleave<T: Copy, V: Deref<Target=[T]>>(blocks: &Vec<V>) -> Vec<T> {
#[test]
fn test_interleave() {
let res = interleave(&vec![&b"1234"[..], b"5678", b"abcdef", b"ghijkl"]);
let res = interleave(&[&b"1234"[..], b"5678", b"abcdef", b"ghijkl"]);
assert_eq!(&*res, b"15ag26bh37ci48djekfl");
}
@ -98,11 +99,13 @@ fn test_interleave() {
/// Constructs data and error correction codewords ready to be put in the QR
/// code matrix.
pub fn construct_codewords(rawbits: &[u8],
version: Version,
ec_level: EcLevel) -> QrResult<(Vec<u8>, Vec<u8>)> {
pub fn construct_codewords(
rawbits: &[u8],
version: Version,
ec_level: EcLevel,
) -> QrResult<(Vec<u8>, Vec<u8>)> {
let (block_1_size, block_1_count, block_2_size, block_2_count) =
try!(version.fetch(ec_level, &DATA_BYTES_PER_BLOCK));
version.fetch(ec_level, &DATA_BYTES_PER_BLOCK)?;
let blocks_count = block_1_count + block_2_count;
let block_1_end = block_1_size * block_1_count;
@ -118,10 +121,11 @@ pub fn construct_codewords(rawbits: &[u8],
}
// Generate EC codes.
let ec_bytes = try!(version.fetch(ec_level, &EC_BYTES_PER_BLOCK));
let ec_codes = blocks.iter()
.map(|block| create_error_correction_code(*block, ec_bytes))
.collect::<Vec<Vec<u8>>>();
let ec_bytes = version.fetch(ec_level, &EC_BYTES_PER_BLOCK)?;
let ec_codes = blocks
.iter()
.map(|block| create_error_correction_code(*block, ec_bytes))
.collect::<Vec<Vec<u8>>>();
let blocks_vec = interleave(&blocks);
let ec_vec = interleave(&ec_codes);
@ -132,24 +136,34 @@ pub fn construct_codewords(rawbits: &[u8],
#[cfg(test)]
mod construct_codewords_test {
use ec::construct_codewords;
use types::{Version, EcLevel};
use types::{EcLevel, Version};
#[test]
fn test_add_ec_simple() {
let msg = b" [\x0bx\xd1r\xdcMC@\xec\x11\xec\x11\xec\x11";
let (blocks_vec, ec_vec) = construct_codewords(msg, Version::Normal(1), EcLevel::M).unwrap();
let (blocks_vec, ec_vec) =
construct_codewords(msg, Version::Normal(1), EcLevel::M).unwrap();
assert_eq!(&*blocks_vec, msg);
assert_eq!(&*ec_vec, b"\xc4#'w\xeb\xd7\xe7\xe2]\x17");
}
#[test]
fn test_add_ec_complex() {
let msg = b"CUF\x86W&U\xc2w2\x06\x12\x06g&\xf6\xf6B\x07v\x86\xf2\x07&V\x16\xc6\xc7\x92\x06\xb6\xe6\xf7w2\x07v\x86W&R\x06\x86\x972\x07F\xf7vV\xc2\x06\x972\x10\xec\x11\xec\x11\xec\x11\xec";
let (blocks_vec, ec_vec) = construct_codewords(msg, Version::Normal(5), EcLevel::Q).unwrap();
assert_eq!(&*blocks_vec,
&b"C\xf6\xb6FU\xf6\xe6\xf7FB\xf7v\x86\x07wVWv2\xc2&\x86\x07\x06U\xf2v\x97\xc2\x07\x862w&W\x102V&\xec\x06\x16R\x11\x12\xc6\x06\xec\x06\xc7\x86\x11g\x92\x97\xec&\x062\x11\x07\xec"[..]);
assert_eq!(&*ec_vec,
&b"\xd5W\x94\xeb\xc7\xcct\x9f\x0b`\xb1\x05-<\xd4\xads\xcaL\x18\xf7\xb6\x85\x93\xf1|K;\xdf\x9d\xf2!\xe5\xc8\xeej\xf8\x86L(\x9a\x1b\xc3\xffu\x81\xe6\xac\x9a\xd1\xbdRo\x11\n\x02V\xa3l\x83\xa1\xa3\xf0 ox\xc0\xb2'\x85\x8d\xec"[..]);
let msg = b"CUF\x86W&U\xc2w2\x06\x12\x06g&\xf6\xf6B\x07v\x86\xf2\x07&V\x16\xc6\xc7\x92\x06\
\xb6\xe6\xf7w2\x07v\x86W&R\x06\x86\x972\x07F\xf7vV\xc2\x06\x972\x10\xec\x11\xec\
\x11\xec\x11\xec";
let expected_blocks = b"C\xf6\xb6FU\xf6\xe6\xf7FB\xf7v\x86\x07wVWv2\xc2&\x86\x07\x06U\xf2v\
\x97\xc2\x07\x862w&W\x102V&\xec\x06\x16R\x11\x12\xc6\x06\xec\x06\
\xc7\x86\x11g\x92\x97\xec&\x062\x11\x07\xec";
let expected_ec = b"\xd5W\x94\xeb\xc7\xcct\x9f\x0b`\xb1\x05-<\xd4\xads\xcaL\x18\xf7\xb6\x85\
\x93\xf1|K;\xdf\x9d\xf2!\xe5\xc8\xeej\xf8\x86L(\x9a\x1b\xc3\xffu\x81\
\xe6\xac\x9a\xd1\xbdRo\x11\n\x02V\xa3l\x83\xa1\xa3\xf0 ox\xc0\xb2'\x85\
\x8d\xec";
let (blocks_vec, ec_vec) =
construct_codewords(msg, Version::Normal(5), EcLevel::Q).unwrap();
assert_eq!(&*blocks_vec, &expected_blocks[..]);
assert_eq!(&*ec_vec, &expected_ec[..]);
}
}
@ -170,8 +184,8 @@ pub fn max_allowed_errors(version: Version, ec_level: EcLevel) -> QrResult<usize
_ => 0,
};
let ec_bytes_per_block = try!(version.fetch(ec_level, &EC_BYTES_PER_BLOCK));
let (_, count1, _, count2) = try!(version.fetch(ec_level, &DATA_BYTES_PER_BLOCK));
let ec_bytes_per_block = version.fetch(ec_level, &EC_BYTES_PER_BLOCK)?;
let (_, count1, _, count2) = version.fetch(ec_level, &DATA_BYTES_PER_BLOCK)?;
let ec_bytes = (count1 + count2) * ec_bytes_per_block;
Ok((ec_bytes - p) / 2)
@ -180,7 +194,7 @@ pub fn max_allowed_errors(version: Version, ec_level: EcLevel) -> QrResult<usize
#[cfg(test)]
mod max_allowed_errors_test {
use ec::max_allowed_errors;
use types::{Version, EcLevel};
use types::{EcLevel, Version};
#[test]
fn test_low_versions() {
@ -231,10 +245,42 @@ mod max_allowed_errors_test {
//{{{ Precomputed tables for GF(256).
/// `EXP_TABLE` encodes the value of 2<sup>n</sup> in the Galois Field GF(256).
static EXP_TABLE: &'static [u8] = b"\x01\x02\x04\x08\x10\x20\x40\x80\x1d\x3a\x74\xe8\xcd\x87\x13\x26\x4c\x98\x2d\x5a\xb4\x75\xea\xc9\x8f\x03\x06\x0c\x18\x30\x60\xc0\x9d\x27\x4e\x9c\x25\x4a\x94\x35\x6a\xd4\xb5\x77\xee\xc1\x9f\x23\x46\x8c\x05\x0a\x14\x28\x50\xa0\x5d\xba\x69\xd2\xb9\x6f\xde\xa1\x5f\xbe\x61\xc2\x99\x2f\x5e\xbc\x65\xca\x89\x0f\x1e\x3c\x78\xf0\xfd\xe7\xd3\xbb\x6b\xd6\xb1\x7f\xfe\xe1\xdf\xa3\x5b\xb6\x71\xe2\xd9\xaf\x43\x86\x11\x22\x44\x88\x0d\x1a\x34\x68\xd0\xbd\x67\xce\x81\x1f\x3e\x7c\xf8\xed\xc7\x93\x3b\x76\xec\xc5\x97\x33\x66\xcc\x85\x17\x2e\x5c\xb8\x6d\xda\xa9\x4f\x9e\x21\x42\x84\x15\x2a\x54\xa8\x4d\x9a\x29\x52\xa4\x55\xaa\x49\x92\x39\x72\xe4\xd5\xb7\x73\xe6\xd1\xbf\x63\xc6\x91\x3f\x7e\xfc\xe5\xd7\xb3\x7b\xf6\xf1\xff\xe3\xdb\xab\x4b\x96\x31\x62\xc4\x95\x37\x6e\xdc\xa5\x57\xae\x41\x82\x19\x32\x64\xc8\x8d\x07\x0e\x1c\x38\x70\xe0\xdd\xa7\x53\xa6\x51\xa2\x59\xb2\x79\xf2\xf9\xef\xc3\x9b\x2b\x56\xac\x45\x8a\x09\x12\x24\x48\x90\x3d\x7a\xf4\xf5\xf7\xf3\xfb\xeb\xcb\x8b\x0b\x16\x2c\x58\xb0\x7d\xfa\xe9\xcf\x83\x1b\x36\x6c\xd8\xad\x47\x8e\x01";
static EXP_TABLE: &'static [u8] = b"\
\x01\x02\x04\x08\x10\x20\x40\x80\x1d\x3a\x74\xe8\xcd\x87\x13\x26\
\x4c\x98\x2d\x5a\xb4\x75\xea\xc9\x8f\x03\x06\x0c\x18\x30\x60\xc0\
\x9d\x27\x4e\x9c\x25\x4a\x94\x35\x6a\xd4\xb5\x77\xee\xc1\x9f\x23\
\x46\x8c\x05\x0a\x14\x28\x50\xa0\x5d\xba\x69\xd2\xb9\x6f\xde\xa1\
\x5f\xbe\x61\xc2\x99\x2f\x5e\xbc\x65\xca\x89\x0f\x1e\x3c\x78\xf0\
\xfd\xe7\xd3\xbb\x6b\xd6\xb1\x7f\xfe\xe1\xdf\xa3\x5b\xb6\x71\xe2\
\xd9\xaf\x43\x86\x11\x22\x44\x88\x0d\x1a\x34\x68\xd0\xbd\x67\xce\
\x81\x1f\x3e\x7c\xf8\xed\xc7\x93\x3b\x76\xec\xc5\x97\x33\x66\xcc\
\x85\x17\x2e\x5c\xb8\x6d\xda\xa9\x4f\x9e\x21\x42\x84\x15\x2a\x54\
\xa8\x4d\x9a\x29\x52\xa4\x55\xaa\x49\x92\x39\x72\xe4\xd5\xb7\x73\
\xe6\xd1\xbf\x63\xc6\x91\x3f\x7e\xfc\xe5\xd7\xb3\x7b\xf6\xf1\xff\
\xe3\xdb\xab\x4b\x96\x31\x62\xc4\x95\x37\x6e\xdc\xa5\x57\xae\x41\
\x82\x19\x32\x64\xc8\x8d\x07\x0e\x1c\x38\x70\xe0\xdd\xa7\x53\xa6\
\x51\xa2\x59\xb2\x79\xf2\xf9\xef\xc3\x9b\x2b\x56\xac\x45\x8a\x09\
\x12\x24\x48\x90\x3d\x7a\xf4\xf5\xf7\xf3\xfb\xeb\xcb\x8b\x0b\x16\
\x2c\x58\xb0\x7d\xfa\xe9\xcf\x83\x1b\x36\x6c\xd8\xad\x47\x8e\x01";
/// `LOG_TABLE` is the inverse function of `EXP_TABLE`.
static LOG_TABLE: &'static [u8] = b"\xff\x00\x01\x19\x02\x32\x1a\xc6\x03\xdf\x33\xee\x1b\x68\xc7\x4b\x04\x64\xe0\x0e\x34\x8d\xef\x81\x1c\xc1\x69\xf8\xc8\x08\x4c\x71\x05\x8a\x65\x2f\xe1\x24\x0f\x21\x35\x93\x8e\xda\xf0\x12\x82\x45\x1d\xb5\xc2\x7d\x6a\x27\xf9\xb9\xc9\x9a\x09\x78\x4d\xe4\x72\xa6\x06\xbf\x8b\x62\x66\xdd\x30\xfd\xe2\x98\x25\xb3\x10\x91\x22\x88\x36\xd0\x94\xce\x8f\x96\xdb\xbd\xf1\xd2\x13\x5c\x83\x38\x46\x40\x1e\x42\xb6\xa3\xc3\x48\x7e\x6e\x6b\x3a\x28\x54\xfa\x85\xba\x3d\xca\x5e\x9b\x9f\x0a\x15\x79\x2b\x4e\xd4\xe5\xac\x73\xf3\xa7\x57\x07\x70\xc0\xf7\x8c\x80\x63\x0d\x67\x4a\xde\xed\x31\xc5\xfe\x18\xe3\xa5\x99\x77\x26\xb8\xb4\x7c\x11\x44\x92\xd9\x23\x20\x89\x2e\x37\x3f\xd1\x5b\x95\xbc\xcf\xcd\x90\x87\x97\xb2\xdc\xfc\xbe\x61\xf2\x56\xd3\xab\x14\x2a\x5d\x9e\x84\x3c\x39\x53\x47\x6d\x41\xa2\x1f\x2d\x43\xd8\xb7\x7b\xa4\x76\xc4\x17\x49\xec\x7f\x0c\x6f\xf6\x6c\xa1\x3b\x52\x29\x9d\x55\xaa\xfb\x60\x86\xb1\xbb\xcc\x3e\x5a\xcb\x59\x5f\xb0\x9c\xa9\xa0\x51\x0b\xf5\x16\xeb\x7a\x75\x2c\xd7\x4f\xae\xd5\xe9\xe6\xe7\xad\xe8\x74\xd6\xf4\xea\xa8\x50\x58\xaf";
static LOG_TABLE: &'static [u8] = b"\
\xff\x00\x01\x19\x02\x32\x1a\xc6\x03\xdf\x33\xee\x1b\x68\xc7\x4b\
\x04\x64\xe0\x0e\x34\x8d\xef\x81\x1c\xc1\x69\xf8\xc8\x08\x4c\x71\
\x05\x8a\x65\x2f\xe1\x24\x0f\x21\x35\x93\x8e\xda\xf0\x12\x82\x45\
\x1d\xb5\xc2\x7d\x6a\x27\xf9\xb9\xc9\x9a\x09\x78\x4d\xe4\x72\xa6\
\x06\xbf\x8b\x62\x66\xdd\x30\xfd\xe2\x98\x25\xb3\x10\x91\x22\x88\
\x36\xd0\x94\xce\x8f\x96\xdb\xbd\xf1\xd2\x13\x5c\x83\x38\x46\x40\
\x1e\x42\xb6\xa3\xc3\x48\x7e\x6e\x6b\x3a\x28\x54\xfa\x85\xba\x3d\
\xca\x5e\x9b\x9f\x0a\x15\x79\x2b\x4e\xd4\xe5\xac\x73\xf3\xa7\x57\
\x07\x70\xc0\xf7\x8c\x80\x63\x0d\x67\x4a\xde\xed\x31\xc5\xfe\x18\
\xe3\xa5\x99\x77\x26\xb8\xb4\x7c\x11\x44\x92\xd9\x23\x20\x89\x2e\
\x37\x3f\xd1\x5b\x95\xbc\xcf\xcd\x90\x87\x97\xb2\xdc\xfc\xbe\x61\
\xf2\x56\xd3\xab\x14\x2a\x5d\x9e\x84\x3c\x39\x53\x47\x6d\x41\xa2\
\x1f\x2d\x43\xd8\xb7\x7b\xa4\x76\xc4\x17\x49\xec\x7f\x0c\x6f\xf6\
\x6c\xa1\x3b\x52\x29\x9d\x55\xaa\xfb\x60\x86\xb1\xbb\xcc\x3e\x5a\
\xcb\x59\x5f\xb0\x9c\xa9\xa0\x51\x0b\xf5\x16\xeb\x7a\x75\x2c\xd7\
\x4f\xae\xd5\xe9\xe6\xe7\xad\xe8\x74\xd6\xf4\xea\xa8\x50\x58\xaf";
/// The generator polynomial list.
///
@ -245,6 +291,8 @@ static LOG_TABLE: &'static [u8] = b"\xff\x00\x01\x19\x02\x32\x1a\xc6\x03\xdf\x33
/// is the Reed-Solomon error correction code.
///
/// A partial list can be found from ISO/IEC 18004:2006 Annex A.
#[cfg_attr(rustfmt, rustfmt_skip)]
// ^ this attribute is currently useless, see rust-lang-nursery/rustfmt#1080 and 1298
static GENERATOR_POLYNOMIALS: [&'static [u8]; 70] = [
b"",
b"\x00",
@ -329,55 +377,51 @@ static GENERATOR_POLYNOMIALS: [&'static [u8]; 70] = [
/// by the sum of the 6th column).
static EC_BYTES_PER_BLOCK: [[usize; 4]; 44] = [
// Normal versions.
[7, 10, 13, 17], // 1
[10, 16, 22, 28], // 2
[15, 26, 18, 22], // 3
[20, 18, 26, 16], // 4
[26, 24, 18, 22], // 5
[18, 16, 24, 28], // 6
[20, 18, 18, 26], // 7
[24, 22, 22, 26], // 8
[30, 22, 20, 24], // 9
[18, 26, 24, 28], // 10
[20, 30, 28, 24], // 11
[24, 22, 26, 28], // 12
[26, 22, 24, 22], // 13
[30, 24, 20, 24], // 14
[22, 24, 30, 24], // 15
[24, 28, 24, 30], // 16
[28, 28, 28, 28], // 17
[30, 26, 28, 28], // 18
[28, 26, 26, 26], // 19
[28, 26, 30, 28], // 20
[28, 26, 28, 30], // 21
[28, 28, 30, 24], // 22
[30, 28, 30, 30], // 23
[30, 28, 30, 30], // 24
[26, 28, 30, 30], // 25
[28, 28, 28, 30], // 26
[30, 28, 30, 30], // 27
[30, 28, 30, 30], // 28
[30, 28, 30, 30], // 29
[30, 28, 30, 30], // 30
[30, 28, 30, 30], // 31
[30, 28, 30, 30], // 32
[30, 28, 30, 30], // 33
[30, 28, 30, 30], // 34
[30, 28, 30, 30], // 35
[30, 28, 30, 30], // 36
[30, 28, 30, 30], // 37
[30, 28, 30, 30], // 38
[30, 28, 30, 30], // 39
[30, 28, 30, 30], // 40
[7, 10, 13, 17], // 1
[10, 16, 22, 28], // 2
[15, 26, 18, 22], // 3
[20, 18, 26, 16], // 4
[26, 24, 18, 22], // 5
[18, 16, 24, 28], // 6
[20, 18, 18, 26], // 7
[24, 22, 22, 26], // 8
[30, 22, 20, 24], // 9
[18, 26, 24, 28], // 10
[20, 30, 28, 24], // 11
[24, 22, 26, 28], // 12
[26, 22, 24, 22], // 13
[30, 24, 20, 24], // 14
[22, 24, 30, 24], // 15
[24, 28, 24, 30], // 16
[28, 28, 28, 28], // 17
[30, 26, 28, 28], // 18
[28, 26, 26, 26], // 19
[28, 26, 30, 28], // 20
[28, 26, 28, 30], // 21
[28, 28, 30, 24], // 22
[30, 28, 30, 30], // 23
[30, 28, 30, 30], // 24
[26, 28, 30, 30], // 25
[28, 28, 28, 30], // 26
[30, 28, 30, 30], // 27
[30, 28, 30, 30], // 28
[30, 28, 30, 30], // 29
[30, 28, 30, 30], // 30
[30, 28, 30, 30], // 31
[30, 28, 30, 30], // 32
[30, 28, 30, 30], // 33
[30, 28, 30, 30], // 34
[30, 28, 30, 30], // 35
[30, 28, 30, 30], // 36
[30, 28, 30, 30], // 37
[30, 28, 30, 30], // 38
[30, 28, 30, 30], // 39
[30, 28, 30, 30], // 40
// Micro versions.
[2, 0, 0, 0], // M1
[5, 6, 0, 0], // M2
[6, 8, 0, 0], // M3
[8, 10, 14, 0], // M4
[2, 0, 0, 0], // M1
[5, 6, 0, 0], // M2
[6, 8, 0, 0], // M3
[8, 10, 14, 0], // M4
];
/// `DATA_BYTES_PER_BLOCK` provides the number of codewords (bytes) used for
@ -391,57 +435,51 @@ static EC_BYTES_PER_BLOCK: [[usize; 4]; 44] = [
/// 20 blocks with 15 bytes in size, and 61 blocks with 16 bytes in size.
static DATA_BYTES_PER_BLOCK: [[(usize, usize, usize, usize); 4]; 44] = [
// Normal versions.
[(19, 1, 0, 0), (16, 1, 0, 0), (13, 1, 0, 0), (9, 1, 0, 0)], // 1
[(34, 1, 0, 0), (28, 1, 0, 0), (22, 1, 0, 0), (16, 1, 0, 0)], // 2
[(55, 1, 0, 0), (44, 1, 0, 0), (17, 2, 0, 0), (13, 2, 0, 0)], // 3
[(80, 1, 0, 0), (32, 2, 0, 0), (24, 2, 0, 0), (9, 4, 0, 0)], // 4
[(108, 1, 0, 0), (43, 2, 0, 0), (15, 2, 16, 2), (11, 2, 12, 2)], // 5
[(68, 2, 0, 0), (27, 4, 0, 0), (19, 4, 0, 0), (15, 4, 0, 0)], // 6
[(78, 2, 0, 0), (31, 4, 0, 0), (14, 2, 15, 4), (13, 4, 14, 1)], // 7
[(97, 2, 0, 0), (38, 2, 39, 2), (18, 4, 19, 2), (14, 4, 15, 2)], // 8
[(116, 2, 0, 0), (36, 3, 37, 2), (16, 4, 17, 4), (12, 4, 13, 4)], // 9
[(68, 2, 69, 2), (43, 4, 44, 1), (19, 6, 20, 2), (15, 6, 16, 2)], // 10
[(81, 4, 0, 0), (50, 1, 51, 4), (22, 4, 23, 4), (12, 3, 13, 8)], // 11
[(92, 2, 93, 2), (36, 6, 37, 2), (20, 4, 21, 6), (14, 7, 15, 4)], // 12
[(107, 4, 0, 0), (37, 8, 38, 1), (20, 8, 21, 4), (11, 12, 12, 4)], // 13
[(115, 3, 116, 1), (40, 4, 41, 5), (16, 11, 17, 5), (12, 11, 13, 5)], // 14
[(87, 5, 88, 1), (41, 5, 42, 5), (24, 5, 25, 7), (12, 11, 13, 7)], // 15
[(98, 5, 99, 1), (45, 7, 46, 3), (19, 15, 20, 2), (15, 3, 16, 13)], // 16
[(107, 1, 108, 5), (46, 10, 47, 1), (22, 1, 23, 15), (14, 2, 15, 17)], // 17
[(120, 5, 121, 1), (43, 9, 44, 4), (22, 17, 23, 1), (14, 2, 15, 19)], // 18
[(113, 3, 114, 4), (44, 3, 45, 11), (21, 17, 22, 4), (13, 9, 14, 16)], // 19
[(107, 3, 108, 5), (41, 3, 42, 13), (24, 15, 25, 5), (15, 15, 16, 10)], // 20
[(116, 4, 117, 4), (42, 17, 0, 0), (22, 17, 23, 6), (16, 19, 17, 6)], // 21
[(111, 2, 112, 7), (46, 17, 0, 0), (24, 7, 25, 16), (13, 34, 0, 0)], // 22
[(121, 4, 122, 5), (47, 4, 48, 14), (24, 11, 25, 14), (15, 16, 16, 14)], // 23
[(117, 6, 118, 4), (45, 6, 46, 14), (24, 11, 25, 16), (16, 30, 17, 2)], // 24
[(106, 8, 107, 4), (47, 8, 48, 13), (24, 7, 25, 22), (15, 22, 16, 13)], // 25
[(114, 10, 115, 2), (46, 19, 47, 4), (22, 28, 23, 6), (16, 33, 17, 4)], // 26
[(122, 8, 123, 4), (45, 22, 46, 3), (23, 8, 24, 26), (15, 12, 16, 28)], // 27
[(117, 3, 118, 10), (45, 3, 46, 23), (24, 4, 25, 31), (15, 11, 16, 31)], // 28
[(116, 7, 117, 7), (45, 21, 46, 7), (23, 1, 24, 37), (15, 19, 16, 26)], // 29
[(115, 5, 116, 10), (47, 19, 48, 10), (24, 15, 25, 25), (15, 23, 16, 25)], // 30
[(115, 13, 116, 3), (46, 2, 47, 29), (24, 42, 25, 1), (15, 23, 16, 28)], // 31
[(115, 17, 0, 0), (46, 10, 47, 23), (24, 10, 25, 35), (15, 19, 16, 35)], // 32
[(115, 17, 116, 1), (46, 14, 47, 21), (24, 29, 25, 19), (15, 11, 16, 46)], // 33
[(115, 13, 116, 6), (46, 14, 47, 23), (24, 44, 25, 7), (16, 59, 17, 1)], // 34
[(121, 12, 122, 7), (47, 12, 48, 26), (24, 39, 25, 14), (15, 22, 16, 41)], // 35
[(121, 6, 122, 14), (47, 6, 48, 34), (24, 46, 25, 10), (15, 2, 16, 64)], // 36
[(122, 17, 123, 4), (46, 29, 47, 14), (24, 49, 25, 10), (15, 24, 16, 46)], // 37
[(122, 4, 123, 18), (46, 13, 47, 32), (24, 48, 25, 14), (15, 42, 16, 32)], // 38
[(117, 20, 118, 4), (47, 40, 48, 7), (24, 43, 25, 22), (15, 10, 16, 67)], // 39
[(118, 19, 119, 6), (47, 18, 48, 31), (24, 34, 25, 34), (15, 20, 16, 61)], // 40
[(19, 1, 0, 0), (16, 1, 0, 0), (13, 1, 0, 0), (9, 1, 0, 0)], // 1
[(34, 1, 0, 0), (28, 1, 0, 0), (22, 1, 0, 0), (16, 1, 0, 0)], // 2
[(55, 1, 0, 0), (44, 1, 0, 0), (17, 2, 0, 0), (13, 2, 0, 0)], // 3
[(80, 1, 0, 0), (32, 2, 0, 0), (24, 2, 0, 0), (9, 4, 0, 0)], // 4
[(108, 1, 0, 0), (43, 2, 0, 0), (15, 2, 16, 2), (11, 2, 12, 2)], // 5
[(68, 2, 0, 0), (27, 4, 0, 0), (19, 4, 0, 0), (15, 4, 0, 0)], // 6
[(78, 2, 0, 0), (31, 4, 0, 0), (14, 2, 15, 4), (13, 4, 14, 1)], // 7
[(97, 2, 0, 0), (38, 2, 39, 2), (18, 4, 19, 2), (14, 4, 15, 2)], // 8
[(116, 2, 0, 0), (36, 3, 37, 2), (16, 4, 17, 4), (12, 4, 13, 4)], // 9
[(68, 2, 69, 2), (43, 4, 44, 1), (19, 6, 20, 2), (15, 6, 16, 2)], // 10
[(81, 4, 0, 0), (50, 1, 51, 4), (22, 4, 23, 4), (12, 3, 13, 8)], // 11
[(92, 2, 93, 2), (36, 6, 37, 2), (20, 4, 21, 6), (14, 7, 15, 4)], // 12
[(107, 4, 0, 0), (37, 8, 38, 1), (20, 8, 21, 4), (11, 12, 12, 4)], // 13
[(115, 3, 116, 1), (40, 4, 41, 5), (16, 11, 17, 5), (12, 11, 13, 5)], // 14
[(87, 5, 88, 1), (41, 5, 42, 5), (24, 5, 25, 7), (12, 11, 13, 7)], // 15
[(98, 5, 99, 1), (45, 7, 46, 3), (19, 15, 20, 2), (15, 3, 16, 13)], // 16
[(107, 1, 108, 5), (46, 10, 47, 1), (22, 1, 23, 15), (14, 2, 15, 17)], // 17
[(120, 5, 121, 1), (43, 9, 44, 4), (22, 17, 23, 1), (14, 2, 15, 19)], // 18
[(113, 3, 114, 4), (44, 3, 45, 11), (21, 17, 22, 4), (13, 9, 14, 16)], // 19
[(107, 3, 108, 5), (41, 3, 42, 13), (24, 15, 25, 5), (15, 15, 16, 10)], // 20
[(116, 4, 117, 4), (42, 17, 0, 0), (22, 17, 23, 6), (16, 19, 17, 6)], // 21
[(111, 2, 112, 7), (46, 17, 0, 0), (24, 7, 25, 16), (13, 34, 0, 0)], // 22
[(121, 4, 122, 5), (47, 4, 48, 14), (24, 11, 25, 14), (15, 16, 16, 14)], // 23
[(117, 6, 118, 4), (45, 6, 46, 14), (24, 11, 25, 16), (16, 30, 17, 2)], // 24
[(106, 8, 107, 4), (47, 8, 48, 13), (24, 7, 25, 22), (15, 22, 16, 13)], // 25
[(114, 10, 115, 2), (46, 19, 47, 4), (22, 28, 23, 6), (16, 33, 17, 4)], // 26
[(122, 8, 123, 4), (45, 22, 46, 3), (23, 8, 24, 26), (15, 12, 16, 28)], // 27
[(117, 3, 118, 10), (45, 3, 46, 23), (24, 4, 25, 31), (15, 11, 16, 31)], // 28
[(116, 7, 117, 7), (45, 21, 46, 7), (23, 1, 24, 37), (15, 19, 16, 26)], // 29
[(115, 5, 116, 10), (47, 19, 48, 10), (24, 15, 25, 25), (15, 23, 16, 25)], // 30
[(115, 13, 116, 3), (46, 2, 47, 29), (24, 42, 25, 1), (15, 23, 16, 28)], // 31
[(115, 17, 0, 0), (46, 10, 47, 23), (24, 10, 25, 35), (15, 19, 16, 35)], // 32
[(115, 17, 116, 1), (46, 14, 47, 21), (24, 29, 25, 19), (15, 11, 16, 46)], // 33
[(115, 13, 116, 6), (46, 14, 47, 23), (24, 44, 25, 7), (16, 59, 17, 1)], // 34
[(121, 12, 122, 7), (47, 12, 48, 26), (24, 39, 25, 14), (15, 22, 16, 41)], // 35
[(121, 6, 122, 14), (47, 6, 48, 34), (24, 46, 25, 10), (15, 2, 16, 64)], // 36
[(122, 17, 123, 4), (46, 29, 47, 14), (24, 49, 25, 10), (15, 24, 16, 46)], // 37
[(122, 4, 123, 18), (46, 13, 47, 32), (24, 48, 25, 14), (15, 42, 16, 32)], // 38
[(117, 20, 118, 4), (47, 40, 48, 7), (24, 43, 25, 22), (15, 10, 16, 67)], // 39
[(118, 19, 119, 6), (47, 18, 48, 31), (24, 34, 25, 34), (15, 20, 16, 61)], // 40
// Micro versions.
[(3, 1, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0)], // M1
[(5, 1, 0, 0), (4, 1, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0)], // M2
[(11, 1, 0, 0), (9, 1, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0)], // M3
[(16, 1, 0, 0), (14, 1, 0, 0), (10, 1, 0, 0), (0, 0, 0, 0)], // M4
[(3, 1, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0)], // M1
[(5, 1, 0, 0), (4, 1, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0)], // M2
[(11, 1, 0, 0), (9, 1, 0, 0), (0, 0, 0, 0), (0, 0, 0, 0)], // M3
[(16, 1, 0, 0), (14, 1, 0, 0), (10, 1, 0, 0), (0, 0, 0, 0)], // M4
];
//}}}

175
src/lib.rs
View file

@ -2,8 +2,8 @@
//!
//! This crate provides a QR code and Micro QR code encoder for binary data.
//!
#![cfg_attr(feature="image", doc=" ```rust")]
#![cfg_attr(not(feature="image"), doc="```ignore")]
#![cfg_attr(feature = "image", doc = " ```rust")]
#![cfg_attr(not(feature = "image"), doc = "```ignore")]
//! extern crate qrcode;
//! extern crate image;
//!
@ -29,10 +29,17 @@
//! }
//! ```
#![cfg_attr(feature="bench", feature(test))] // Unstable libraries
#![cfg_attr(feature = "bench", feature(test))] // Unstable libraries
#![cfg_attr(feature = "cargo-clippy", deny(warnings, clippy_pedantic))]
#![cfg_attr(feature = "cargo-clippy",
allow(unreadable_literal, missing_docs_in_private_items, shadow_reuse,
range_plus_one))]
#[cfg(feature="bench")] extern crate test;
#[cfg(feature="image")] extern crate image;
extern crate checked_int_cast;
#[cfg(feature = "image")]
extern crate image;
#[cfg(feature = "bench")]
extern crate test;
use std::ops::Index;
@ -42,10 +49,13 @@ pub mod optimize;
pub mod ec;
pub mod canvas;
pub mod render;
mod cast;
pub use types::{QrResult, Color, EcLevel, Version};
pub use types::{Color, EcLevel, QrResult, Version};
use render::{Pixel, Renderer};
use checked_int_cast::CheckedIntCast;
use cast::As;
/// The encoded QR code symbol.
#[derive(Clone)]
@ -66,8 +76,8 @@ impl QrCode {
///
/// let code = QrCode::new(b"Some data").unwrap();
///
pub fn new<D: AsRef<[u8]>>(data: D) -> QrResult<QrCode> {
QrCode::with_error_correction_level(data, EcLevel::M)
pub fn new<D: AsRef<[u8]>>(data: D) -> QrResult<Self> {
Self::with_error_correction_level(data, EcLevel::M)
}
/// Constructs a new QR code which automatically encodes the given data at a
@ -79,9 +89,12 @@ impl QrCode {
///
/// let code = QrCode::with_error_correction_level(b"Some data", EcLevel::H).unwrap();
///
pub fn with_error_correction_level<D: AsRef<[u8]>>(data: D, ec_level: EcLevel) -> QrResult<QrCode> {
let bits = try!(bits::encode_auto(data.as_ref(), ec_level));
QrCode::with_bits(bits, ec_level)
pub fn with_error_correction_level<D: AsRef<[u8]>>(
data: D,
ec_level: EcLevel,
) -> QrResult<Self> {
let bits = bits::encode_auto(data.as_ref(), ec_level)?;
Self::with_bits(bits, ec_level)
}
/// Constructs a new QR code for the given version and error correction
@ -97,11 +110,15 @@ impl QrCode {
///
/// let micro_code = QrCode::with_version(b"123", Version::Micro(1), EcLevel::L).unwrap();
///
pub fn with_version<D: AsRef<[u8]>>(data: D, version: Version, ec_level: EcLevel) -> QrResult<QrCode> {
pub fn with_version<D: AsRef<[u8]>>(
data: D,
version: Version,
ec_level: EcLevel,
) -> QrResult<Self> {
let mut bits = bits::Bits::new(version);
try!(bits.push_optimal_data(data.as_ref()));
try!(bits.push_terminator(ec_level));
QrCode::with_bits(bits, ec_level)
bits.push_optimal_data(data.as_ref())?;
bits.push_terminator(ec_level)?;
Self::with_bits(bits, ec_level)
}
/// Constructs a new QR code with encoded bits.
@ -126,19 +143,19 @@ impl QrCode {
/// bits.push_terminator(EcLevel::L);
/// let qrcode = QrCode::with_bits(bits, EcLevel::L);
///
pub fn with_bits(bits: bits::Bits, ec_level: EcLevel) -> QrResult<QrCode> {
pub fn with_bits(bits: bits::Bits, ec_level: EcLevel) -> QrResult<Self> {
let version = bits.version();
let data = bits.into_bytes();
let (encoded_data, ec_data) = try!(ec::construct_codewords(&*data, version, ec_level));
let (encoded_data, ec_data) = ec::construct_codewords(&*data, version, ec_level)?;
let mut canvas = canvas::Canvas::new(version, ec_level);
canvas.draw_all_functional_patterns();
canvas.draw_data(&*encoded_data, &*ec_data);
let canvas = canvas.apply_best_mask();
Ok(QrCode {
Ok(Self {
content: canvas.into_colors(),
version: version,
ec_level: ec_level,
width: version.width() as usize,
width: version.width().as_usize(),
})
}
@ -163,13 +180,17 @@ impl QrCode {
/// before the data becomes corrupted. Note that errors should not be
/// introduced to functional modules.
pub fn max_allowed_errors(&self) -> usize {
ec::max_allowed_errors(self.version, self.ec_level).unwrap()
ec::max_allowed_errors(self.version, self.ec_level).expect("invalid version or ec_level")
}
/// Checks whether a module at coordinate (x, y) is a functional module or
/// not.
pub fn is_functional(&self, x: usize, y: usize) -> bool {
canvas::is_functional(self.version, self.version.width(), x as i16, y as i16)
let x = x.as_i16_checked()
.expect("coordinate is too large for QR code");
let y = y.as_i16_checked()
.expect("coordinate is too large for QR code");
canvas::is_functional(self.version, self.version.width(), x, y)
}
/// Converts the QR code into a human-readable string. This is mainly for
@ -184,16 +205,19 @@ impl QrCode {
/// Converts the QR code to a vector of booleans. Each entry represents the
/// color of the module, with "true" means dark and "false" means light.
#[deprecated(since="0.4.0", note="use `to_colors()` instead")]
#[deprecated(since = "0.4.0", note = "use `to_colors()` instead")]
pub fn to_vec(&self) -> Vec<bool> {
self.content.iter().map(|c| *c != Color::Light).collect()
}
/// Converts the QR code to a vector of booleans. Each entry represents the
/// color of the module, with "true" means dark and "false" means light.
#[deprecated(since="0.4.0", note="use `into_colors()` instead")]
#[deprecated(since = "0.4.0", note = "use `into_colors()` instead")]
pub fn into_vec(self) -> Vec<bool> {
self.content.into_iter().map(|c| c != Color::Light).collect()
self.content
.into_iter()
.map(|c| c != Color::Light)
.collect()
}
/// Converts the QR code to a vector of colors.
@ -212,8 +236,8 @@ impl QrCode {
///
/// # Examples
///
#[cfg_attr(feature="image", doc=" ```rust")]
#[cfg_attr(not(feature="image"), doc=" ```ignore")]
#[cfg_attr(feature = "image", doc = " ```rust")]
#[cfg_attr(not(feature = "image"), doc = " ```ignore")]
/// # extern crate image;
/// # extern crate qrcode;
/// # use qrcode::QrCode;
@ -250,66 +274,74 @@ impl Index<(usize, usize)> for QrCode {
#[cfg(test)]
mod tests {
use {QrCode, Version, EcLevel};
use {EcLevel, QrCode, Version};
#[test]
fn test_annex_i_qr() {
// This uses the ISO Annex I as test vector.
let code = QrCode::with_version(b"01234567", Version::Normal(1), EcLevel::M).unwrap();
assert_eq!(&*code.to_debug_str('#', '.'), "\
#######..#.##.#######\n\
#.....#..####.#.....#\n\
#.###.#.#.....#.###.#\n\
#.###.#.##....#.###.#\n\
#.###.#.#.###.#.###.#\n\
#.....#.#...#.#.....#\n\
#######.#.#.#.#######\n\
........#..##........\n\
#.#####..#..#.#####..\n\
...#.#.##.#.#..#.##..\n\
..#...##.#.#.#..#####\n\
....#....#.....####..\n\
...######..#.#..#....\n\
........#.#####..##..\n\
#######..##.#.##.....\n\
#.....#.#.#####...#.#\n\
#.###.#.#...#..#.##..\n\
#.###.#.##..#..#.....\n\
#.###.#.#.##.#..#.#..\n\
#.....#........##.##.\n\
#######.####.#..#.#..");
assert_eq!(
&*code.to_debug_str('#', '.'),
"\
#######..#.##.#######\n\
#.....#..####.#.....#\n\
#.###.#.#.....#.###.#\n\
#.###.#.##....#.###.#\n\
#.###.#.#.###.#.###.#\n\
#.....#.#...#.#.....#\n\
#######.#.#.#.#######\n\
........#..##........\n\
#.#####..#..#.#####..\n\
...#.#.##.#.#..#.##..\n\
..#...##.#.#.#..#####\n\
....#....#.....####..\n\
...######..#.#..#....\n\
........#.#####..##..\n\
#######..##.#.##.....\n\
#.....#.#.#####...#.#\n\
#.###.#.#...#..#.##..\n\
#.###.#.##..#..#.....\n\
#.###.#.#.##.#..#.#..\n\
#.....#........##.##.\n\
#######.####.#..#.#.."
);
}
#[test]
fn test_annex_i_micro_qr() {
let code = QrCode::with_version(b"01234567", Version::Micro(2), EcLevel::L).unwrap();
assert_eq!(&*code.to_debug_str('#', '.'), "\
#######.#.#.#\n\
#.....#.###.#\n\
#.###.#..##.#\n\
#.###.#..####\n\
#.###.#.###..\n\
#.....#.#...#\n\
#######..####\n\
.........##..\n\
##.#....#...#\n\
.##.#.#.#.#.#\n\
###..#######.\n\
...#.#....##.\n\
###.#..##.###");
assert_eq!(
&*code.to_debug_str('#', '.'),
"\
#######.#.#.#\n\
#.....#.###.#\n\
#.###.#..##.#\n\
#.###.#..####\n\
#.###.#.###..\n\
#.....#.#...#\n\
#######..####\n\
.........##..\n\
##.#....#...#\n\
.##.#.#.#.#.#\n\
###..#######.\n\
...#.#....##.\n\
###.#..##.###"
);
}
}
#[cfg(all(test, feature="image"))]
#[cfg(all(test, feature = "image"))]
mod image_tests {
use image::{Luma, Rgb, load_from_memory};
use {QrCode, Version, EcLevel};
use image::{load_from_memory, Luma, Rgb};
use {EcLevel, QrCode, Version};
#[test]
fn test_annex_i_qr_as_image() {
let code = QrCode::new(b"01234567").unwrap();
let image = code.render::<Luma<u8>>().build();
let expected = load_from_memory(include_bytes!("test_annex_i_qr_as_image.png")).unwrap().to_luma();
let expected = load_from_memory(include_bytes!("test_annex_i_qr_as_image.png"))
.unwrap()
.to_luma();
assert_eq!(image.dimensions(), expected.dimensions());
assert_eq!(image.into_raw(), expected.into_raw());
}
@ -322,16 +354,18 @@ mod image_tests {
.dark_color(Rgb { data: [128, 0, 0] })
.light_color(Rgb { data: [255, 255, 128] })
.build();
let expected = load_from_memory(include_bytes!("test_annex_i_micro_qr_as_image.png")).unwrap().to_rgb();
let expected = load_from_memory(include_bytes!("test_annex_i_micro_qr_as_image.png"))
.unwrap()
.to_rgb();
assert_eq!(image.dimensions(), expected.dimensions());
assert_eq!(image.into_raw(), expected.into_raw());
}
}
#[cfg(all(test, feature="svg"))]
#[cfg(all(test, feature = "svg"))]
mod svg_tests {
use render::svg::Color as SvgColor;
use {QrCode, Version, EcLevel};
use {EcLevel, QrCode, Version};
#[test]
fn test_annex_i_qr_as_svg() {
@ -353,4 +387,3 @@ mod svg_tests {
assert_eq!(&image, expected);
}
}

464
src/optimize.rs
View file

@ -2,7 +2,7 @@
use std::slice::Iter;
use types::{Mode, Version};
#[cfg(feature="bench")]
#[cfg(feature = "bench")]
use test::Bencher;
//------------------------------------------------------------------------------
@ -26,7 +26,11 @@ impl Segment {
/// length bits) when this segment is encoded.
pub fn encoded_len(&self, version: Version) -> usize {
let byte_size = self.end - self.begin;
let chars_count = if self.mode == Mode::Kanji { byte_size / 2 } else { byte_size };
let chars_count = if self.mode == Mode::Kanji {
byte_size / 2
} else {
byte_size
};
let mode_bits_count = version.mode_bits_count();
let length_bits_count = self.mode.length_bits_count(version);
@ -56,7 +60,7 @@ struct EcsIter<I> {
ended: bool,
}
impl<'a, I: Iterator<Item=&'a u8>> Iterator for EcsIter<I> {
impl<'a, I: Iterator<Item = &'a u8>> Iterator for EcsIter<I> {
type Item = (usize, ExclCharSet);
fn next(&mut self) -> Option<(usize, ExclCharSet)> {
@ -115,24 +119,20 @@ impl<'a> Iterator for Parser<'a> {
if self.pending_single_byte {
self.pending_single_byte = false;
self.begin += 1;
return Some(Segment {
mode: Mode::Byte,
begin: self.begin-1,
end: self.begin,
});
return Some(Segment { mode: Mode::Byte, begin: self.begin - 1, end: self.begin });
}
loop {
let (i, ecs) = match self.ecs_iter.next() {
None => { return None; },
Some(a) => a
None => return None,
Some(a) => a,
};
let (next_state, action) = STATE_TRANSITION[self.state as usize + ecs as usize];
self.state = next_state;
let old_begin = self.begin;
let push_mode = match action {
Action::Idle => { continue; }
Action::Idle => continue,
Action::Numeric => Mode::Numeric,
Action::Alpha => Mode::Alphanumeric,
Action::Byte => Mode::Byte,
@ -144,21 +144,15 @@ impl<'a> Iterator for Parser<'a> {
} else {
self.pending_single_byte = true;
self.begin = next_begin;
return Some(Segment {
mode: Mode::Kanji,
begin: old_begin,
end: next_begin,
});
return Some(
Segment { mode: Mode::Kanji, begin: old_begin, end: next_begin },
);
}
}
};
self.begin = i;
return Some(Segment {
mode: push_mode,
begin: old_begin,
end: i,
});
return Some(Segment { mode: push_mode, begin: old_begin, end: i });
}
}
}
@ -175,39 +169,59 @@ mod parse_tests {
#[test]
fn test_parse_1() {
let segs = parse(b"01049123451234591597033130128%10ABC123");
assert_eq!(segs, vec![Segment { mode: Mode::Numeric, begin: 0, end: 29 },
Segment { mode: Mode::Alphanumeric, begin: 29, end: 30 },
Segment { mode: Mode::Numeric, begin: 30, end: 32 },
Segment { mode: Mode::Alphanumeric, begin: 32, end: 35 },
Segment { mode: Mode::Numeric, begin: 35, end: 38 }]);
assert_eq!(
segs,
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 29 },
Segment { mode: Mode::Alphanumeric, begin: 29, end: 30 },
Segment { mode: Mode::Numeric, begin: 30, end: 32 },
Segment { mode: Mode::Alphanumeric, begin: 32, end: 35 },
Segment { mode: Mode::Numeric, begin: 35, end: 38 },
]
);
}
#[test]
fn test_parse_shift_jis_example_1() {
let segs = parse(b"\x82\xa0\x81\x41\x41\xb1\x81\xf0"); // "あ、AｱÅ"
assert_eq!(segs, vec![Segment { mode: Mode::Kanji, begin: 0, end: 4 },
Segment { mode: Mode::Alphanumeric, begin: 4, end: 5 },
Segment { mode: Mode::Byte, begin: 5, end: 6 },
Segment { mode: Mode::Kanji, begin: 6, end: 8 }]);
let segs = parse(b"\x82\xa0\x81\x41\x41\xb1\x81\xf0"); // "あ、AｱÅ"
assert_eq!(
segs,
vec![
Segment { mode: Mode::Kanji, begin: 0, end: 4 },
Segment { mode: Mode::Alphanumeric, begin: 4, end: 5 },
Segment { mode: Mode::Byte, begin: 5, end: 6 },
Segment { mode: Mode::Kanji, begin: 6, end: 8 },
]
);
}
#[test]
fn test_parse_utf_8() {
// Mojibake?
let segs = parse(b"\xe3\x81\x82\xe3\x80\x81A\xef\xbd\xb1\xe2\x84\xab");
assert_eq!(segs, vec![Segment { mode: Mode::Kanji, begin: 0, end: 4 },
Segment { mode: Mode::Byte, begin: 4, end: 5 },
Segment { mode: Mode::Kanji, begin: 5, end: 7 },
Segment { mode: Mode::Byte, begin: 7, end: 10 },
Segment { mode: Mode::Kanji, begin: 10, end: 12 },
Segment { mode: Mode::Byte, begin: 12, end: 13 }]);
assert_eq!(
segs,
vec![
Segment { mode: Mode::Kanji, begin: 0, end: 4 },
Segment { mode: Mode::Byte, begin: 4, end: 5 },
Segment { mode: Mode::Kanji, begin: 5, end: 7 },
Segment { mode: Mode::Byte, begin: 7, end: 10 },
Segment { mode: Mode::Kanji, begin: 10, end: 12 },
Segment { mode: Mode::Byte, begin: 12, end: 13 },
]
);
}
#[test]
fn test_not_kanji_1() {
let segs = parse(b"\x81\x30");
assert_eq!(segs, vec![Segment { mode: Mode::Byte, begin: 0, end: 1 },
Segment { mode: Mode::Numeric, begin: 1, end: 2 }]);
assert_eq!(
segs,
vec![
Segment { mode: Mode::Byte, begin: 0, end: 1 },
Segment { mode: Mode::Numeric, begin: 1, end: 2 },
]
);
}
#[test]
@ -215,22 +229,37 @@ mod parse_tests {
// Note that it's implementation detail that the byte seq is split into
// two. Perhaps adjust the test to check for this.
let segs = parse(b"\xeb\xc0");
assert_eq!(segs, vec![Segment { mode: Mode::Byte, begin: 0, end: 1 },
Segment { mode: Mode::Byte, begin: 1, end: 2 }]);
assert_eq!(
segs,
vec![
Segment { mode: Mode::Byte, begin: 0, end: 1 },
Segment { mode: Mode::Byte, begin: 1, end: 2 },
]
);
}
#[test]
fn test_not_kanji_3() {
let segs = parse(b"\x81\x7f");
assert_eq!(segs, vec![Segment { mode: Mode::Byte, begin: 0, end: 1 },
Segment { mode: Mode::Byte, begin: 1, end: 2 }]);
assert_eq!(
segs,
vec![
Segment { mode: Mode::Byte, begin: 0, end: 1 },
Segment { mode: Mode::Byte, begin: 1, end: 2 },
]
);
}
#[test]
fn test_not_kanji_4() {
let segs = parse(b"\x81\x40\x81");
assert_eq!(segs, vec![Segment { mode: Mode::Kanji, begin: 0, end: 2 },
Segment { mode: Mode::Byte, begin: 2, end: 3 }]);
assert_eq!(
segs,
vec![
Segment { mode: Mode::Kanji, begin: 0, end: 2 },
Segment { mode: Mode::Byte, begin: 2, end: 3 },
]
);
}
}
@ -238,6 +267,7 @@ mod parse_tests {
//------------------------------------------------------------------------------
//{{{ Optimizer
#[cfg_attr(feature = "cargo-clippy", allow(stutter))] // rust-lang-nursery/rust-clippy#2212 ಠ_ಠ
pub struct Optimizer<I> {
parser: I,
last_segment: Segment,
@ -246,23 +276,23 @@ pub struct Optimizer<I> {
ended: bool,
}
impl<I: Iterator<Item=Segment>> Optimizer<I> {
impl<I: Iterator<Item = Segment>> Optimizer<I> {
/// Optimize the segments by combining adjacent segments when possible.
///
/// Currently this method uses a greedy algorithm by combining segments from
/// left to right until the new segment is longer than before. This method
/// does *not* use Annex J from the ISO standard.
///
pub fn new(mut segments: I, version: Version) -> Optimizer<I> {
pub fn new(mut segments: I, version: Version) -> Self {
match segments.next() {
None => Optimizer {
None => Self {
parser: segments,
last_segment: Segment { mode: Mode::Numeric, begin: 0, end: 0 },
last_segment_size: 0,
version: version,
ended: true,
},
Some(segment) => Optimizer {
Some(segment) => Self {
parser: segments,
last_segment: segment,
last_segment_size: segment.encoded_len(version),
@ -279,7 +309,7 @@ impl<'a> Parser<'a> {
}
}
impl<I: Iterator<Item=Segment>> Iterator for Optimizer<I> {
impl<I: Iterator<Item = Segment>> Iterator for Optimizer<I> {
type Item = Segment;
fn next(&mut self) -> Option<Segment> {
@ -321,12 +351,14 @@ impl<I: Iterator<Item=Segment>> Iterator for Optimizer<I> {
/// Computes the total encoded length of all segments.
pub fn total_encoded_len(segments: &[Segment], version: Version) -> usize {
// TODO revert to `.map().sum()` after `sum()` is stable.
segments.iter().fold(0, |acc, seg| acc + seg.encoded_len(version))
segments
.iter()
.fold(0, |acc, seg| acc + seg.encoded_len(version))
}
#[cfg(test)]
mod optimize_tests {
use optimize::{Optimizer, total_encoded_len, Segment};
use optimize::{total_encoded_len, Optimizer, Segment};
use types::{Mode, Version};
fn test_optimization_result(given: Vec<Segment>, expected: Vec<Segment>, version: Version) {
@ -336,130 +368,143 @@ mod optimize_tests {
if given != opt_segs {
assert!(prev_len > new_len, "{} > {}", prev_len, new_len);
}
assert!(opt_segs == expected,
"Optimization gave something better: {} < {} ({:?})",
new_len, total_encoded_len(&*expected, version), opt_segs);
assert!(
opt_segs == expected,
"Optimization gave something better: {} < {} ({:?})",
new_len,
total_encoded_len(&*expected, version),
opt_segs
);
}
#[test]
fn test_example_1() {
test_optimization_result(
vec![Segment { mode: Mode::Alphanumeric, begin: 0, end: 3 },
Segment { mode: Mode::Numeric, begin: 3, end: 6 },
Segment { mode: Mode::Byte, begin: 6, end: 10 }],
vec![Segment { mode: Mode::Alphanumeric, begin: 0, end: 6 },
Segment { mode: Mode::Byte, begin: 6, end: 10 }],
Version::Normal(1)
vec![
Segment { mode: Mode::Alphanumeric, begin: 0, end: 3 },
Segment { mode: Mode::Numeric, begin: 3, end: 6 },
Segment { mode: Mode::Byte, begin: 6, end: 10 },
],
vec![
Segment { mode: Mode::Alphanumeric, begin: 0, end: 6 },
Segment { mode: Mode::Byte, begin: 6, end: 10 },
],
Version::Normal(1),
);
}
#[test]
fn test_example_2() {
test_optimization_result(
vec![Segment { mode: Mode::Numeric, begin: 0, end: 29 },
Segment { mode: Mode::Alphanumeric, begin: 29, end: 30 },
Segment { mode: Mode::Numeric, begin: 30, end: 32 },
Segment { mode: Mode::Alphanumeric, begin: 32, end: 35 },
Segment { mode: Mode::Numeric, begin: 35, end: 38 }],
vec![Segment { mode: Mode::Numeric, begin: 0, end: 29 },
Segment { mode: Mode::Alphanumeric, begin: 29, end: 38 }],
Version::Normal(9)
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 29 },
Segment { mode: Mode::Alphanumeric, begin: 29, end: 30 },
Segment { mode: Mode::Numeric, begin: 30, end: 32 },
Segment { mode: Mode::Alphanumeric, begin: 32, end: 35 },
Segment { mode: Mode::Numeric, begin: 35, end: 38 },
],
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 29 },
Segment { mode: Mode::Alphanumeric, begin: 29, end: 38 },
],
Version::Normal(9),
);
}
#[test]
fn test_example_3() {
test_optimization_result(
vec![Segment { mode: Mode::Kanji, begin: 0, end: 4 },
Segment { mode: Mode::Alphanumeric, begin: 4, end: 5 },
Segment { mode: Mode::Byte, begin: 5, end: 6 },
Segment { mode: Mode::Kanji, begin: 6, end: 8 }],
vec![
Segment { mode: Mode::Kanji, begin: 0, end: 4 },
Segment { mode: Mode::Alphanumeric, begin: 4, end: 5 },
Segment { mode: Mode::Byte, begin: 5, end: 6 },
Segment { mode: Mode::Kanji, begin: 6, end: 8 },
],
vec![Segment { mode: Mode::Byte, begin: 0, end: 8 }],
Version::Normal(1)
Version::Normal(1),
);
}
#[test]
fn test_example_4() {
test_optimization_result(
vec![Segment { mode: Mode::Kanji, begin: 0, end: 10 },
Segment { mode: Mode::Byte, begin: 10, end: 11 }],
vec![Segment { mode: Mode::Kanji, begin: 0, end: 10 },
Segment { mode: Mode::Byte, begin: 10, end: 11 }],
Version::Normal(1)
vec![
Segment { mode: Mode::Kanji, begin: 0, end: 10 },
Segment { mode: Mode::Byte, begin: 10, end: 11 },
],
vec![
Segment { mode: Mode::Kanji, begin: 0, end: 10 },
Segment { mode: Mode::Byte, begin: 10, end: 11 },
],
Version::Normal(1),
);
}
#[test]
fn test_annex_j_guideline_1a() {
test_optimization_result(
vec![Segment { mode: Mode::Numeric, begin: 0, end: 3 },
Segment { mode: Mode::Alphanumeric, begin: 3, end: 4 }],
vec![Segment { mode: Mode::Numeric, begin: 0, end: 3 },
Segment { mode: Mode::Alphanumeric, begin: 3, end: 4 }],
Version::Micro(2)
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 3 },
Segment { mode: Mode::Alphanumeric, begin: 3, end: 4 },
],
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 3 },
Segment { mode: Mode::Alphanumeric, begin: 3, end: 4 },
],
Version::Micro(2),
);
}
#[test]
fn test_annex_j_guideline_1b() {
test_optimization_result(
vec![Segment { mode: Mode::Numeric, begin: 0, end: 2 },
Segment { mode: Mode::Alphanumeric, begin: 2, end: 4 }],
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 2 },
Segment { mode: Mode::Alphanumeric, begin: 2, end: 4 },
],
vec![Segment { mode: Mode::Alphanumeric, begin: 0, end: 4 }],
Version::Micro(2)
Version::Micro(2),
);
}
#[test]
fn test_annex_j_guideline_1c() {
test_optimization_result(
vec![Segment { mode: Mode::Numeric, begin: 0, end: 3 },
Segment { mode: Mode::Alphanumeric, begin: 3, end: 4 }],
vec![
Segment { mode: Mode::Numeric, begin: 0, end: 3 },
Segment { mode: Mode::Alphanumeric, begin: 3, end: 4 },
],
vec![Segment { mode: Mode::Alphanumeric, begin: 0, end: 4 }],
Version::Micro(3)
Version::Micro(3),
);
}
}
#[cfg(feature="bench")]
#[cfg(feature = "bench")]
#[bench]
fn bench_optimize(bencher: &mut Bencher) {
use types::Version;
let data = b"QR\x83R\x81[\x83h\x81i\x83L\x83\x85\x81[\x83A\x81[\x83\x8b\x83R\x81[\x83h\x81j\x82\xc6\x82\xcd\x81A1994\x94N\x82\xc9\x83f\x83\x93\x83\\\x81[\x82\xcc\x8aJ\x94\xad\x95\x94\x96\xe5\x81i\x8c\xbb\x8d\xdd\x82\xcd\x95\xaa\x97\xa3\x82\xb5\x83f\x83\x93\x83\\\x81[\x83E\x83F\x81[\x83u\x81j\x82\xaa\x8aJ\x94\xad\x82\xb5\x82\xbd\x83}\x83g\x83\x8a\x83b\x83N\x83X\x8c^\x93\xf1\x8e\x9f\x8c\xb3\x83R\x81[\x83h\x82\xc5\x82\xa0\x82\xe9\x81B\x82\xc8\x82\xa8\x81AQR\x83R\x81[\x83h\x82\xc6\x82\xa2\x82\xa4\x96\xbc\x8f\xcc\x81i\x82\xa8\x82\xe6\x82\xd1\x92P\x8c\xea\x81j\x82\xcd\x83f\x83\x93\x83\\\x81[\x83E\x83F\x81[\x83u\x82\xcc\x93o\x98^\x8f\xa4\x95W\x81i\x91\xe64075066\x8d\x86\x81j\x82\xc5\x82\xa0\x82\xe9\x81BQR\x82\xcdQuick Response\x82\xc9\x97R\x97\x88\x82\xb5\x81A\x8d\x82\x91\xac\x93\xc7\x82\xdd\x8e\xe6\x82\xe8\x82\xaa\x82\xc5\x82\xab\x82\xe9\x82\xe6\x82\xa4\x82\xc9\x8aJ\x94\xad\x82\xb3\x82\xea\x82\xbd\x81B\x93\x96\x8f\x89\x82\xcd\x8e\xa9\x93\xae\x8e\xd4\x95\x94\x95i\x8dH\x8f\xea\x82\xe2\x94z\x91\x97\x83Z\x83\x93\x83^\x81[\x82\xc8\x82\xc7\x82\xc5\x82\xcc\x8eg\x97p\x82\xf0\x94O\x93\xaa\x82\xc9\x8aJ\x94\xad\x82\xb3\x82\xea\x82\xbd\x82\xaa\x81A\x8c\xbb\x8d\xdd\x82\xc5\x82\xcd\x83X\x83}\x81[\x83g\x83t\x83H\x83\x93\x82\xcc\x95\x81\x8by\x82\xc8\x82\xc7\x82\xc9\x82\xe6\x82\xe8\x93\xfa\x96{\x82\xc9\x8c\xc0\x82\xe7\x82\xb8\x90\xa2\x8aE\x93I\x82\xc9\x95\x81\x8by\x82\xb5\x82\xc4\x82\xa2\x82\xe9\x81B";
bencher.iter(|| {
Parser::new(data).optimize(Version::Normal(15))
});
let data = b"QR\x83R\x81[\x83h\x81i\x83L\x83\x85\x81[\x83A\x81[\x83\x8b\x83R\x81[\x83h\x81j\
\x82\xc6\x82\xcd\x81A1994\x94N\x82\xc9\x83f\x83\x93\x83\\\x81[\x82\xcc\x8aJ\
\x94\xad\x95\x94\x96\xe5\x81i\x8c\xbb\x8d\xdd\x82\xcd\x95\xaa\x97\xa3\x82\xb5\x83f\
\x83\x93\x83\\\x81[\x83E\x83F\x81[\x83u\x81j\x82\xaa\x8aJ\x94\xad\x82\xb5\x82\xbd\
\x83}\x83g\x83\x8a\x83b\x83N\x83X\x8c^\x93\xf1\x8e\x9f\x8c\xb3\x83R\x81[\x83h\
\x82\xc5\x82\xa0\x82\xe9\x81B\x82\xc8\x82\xa8\x81AQR\x83R\x81[\x83h\x82\xc6\
\x82\xa2\x82\xa4\x96\xbc\x8f\xcc\x81i\x82\xa8\x82\xe6\x82\xd1\x92P\x8c\xea\x81j\
\x82\xcd\x83f\x83\x93\x83\\\x81[\x83E\x83F\x81[\x83u\x82\xcc\x93o\x98^\x8f\xa4\
\x95W\x81i\x91\xe64075066\x8d\x86\x81j\x82\xc5\x82\xa0\x82\xe9\x81BQR\x82\xcd\
Quick Response\x82\xc9\x97R\x97\x88\x82\xb5\x81A\x8d\x82\x91\xac\x93\xc7\x82\xdd\
\x8e\xe6\x82\xe8\x82\xaa\x82\xc5\x82\xab\x82\xe9\x82\xe6\x82\xa4\x82\xc9\x8aJ\
\x94\xad\x82\xb3\x82\xea\x82\xbd\x81B\x93\x96\x8f\x89\x82\xcd\x8e\xa9\x93\xae\
\x8e\xd4\x95\x94\x95i\x8dH\x8f\xea\x82\xe2\x94z\x91\x97\x83Z\x83\x93\x83^\x81[\
\x82\xc8\x82\xc7\x82\xc5\x82\xcc\x8eg\x97p\x82\xf0\x94O\x93\xaa\x82\xc9\x8aJ\
\x94\xad\x82\xb3\x82\xea\x82\xbd\x82\xaa\x81A\x8c\xbb\x8d\xdd\x82\xc5\x82\xcd\x83X\
\x83}\x81[\x83g\x83t\x83H\x83\x93\x82\xcc\x95\x81\x8by\x82\xc8\x82\xc7\x82\xc9\
\x82\xe6\x82\xe8\x93\xfa\x96{\x82\xc9\x8c\xc0\x82\xe7\x82\xb8\x90\xa2\x8aE\x93I\
\x82\xc9\x95\x81\x8by\x82\xb5\x82\xc4\x82\xa2\x82\xe9\x81B";
bencher.iter(|| Parser::new(data).optimize(Version::Normal(15)));
}
@ -514,17 +559,17 @@ enum ExclCharSet {
impl ExclCharSet {
/// Determines which character set a byte is in.
fn from_u8(c: u8) -> ExclCharSet {
fn from_u8(c: u8) -> Self {
match c {
0x20 | 0x24 | 0x25 | 0x2a | 0x2b | 0x2d ... 0x2f | 0x3a => ExclCharSet::Symbol,
0x30 ... 0x39 => ExclCharSet::Numeric,
0x41 ... 0x5a => ExclCharSet::Alpha,
0x81 ... 0x9f => ExclCharSet::KanjiHi1,
0xe0 ... 0xea => ExclCharSet::KanjiHi2,
0x20 | 0x24 | 0x25 | 0x2a | 0x2b | 0x2d...0x2f | 0x3a => ExclCharSet::Symbol,
0x30...0x39 => ExclCharSet::Numeric,
0x41...0x5a => ExclCharSet::Alpha,
0x81...0x9f => ExclCharSet::KanjiHi1,
0xe0...0xea => ExclCharSet::KanjiHi2,
0xeb => ExclCharSet::KanjiHi3,
0x40 | 0x5b ... 0x7e | 0x80 | 0xa0 ... 0xbf => ExclCharSet::KanjiLo1,
0xc0 ... 0xdf | 0xec ... 0xfc => ExclCharSet::KanjiLo2,
_ => ExclCharSet::Byte
0x40 | 0x5b...0x7e | 0x80 | 0xa0...0xbf => ExclCharSet::KanjiLo1,
0xc0...0xdf | 0xec...0xfc => ExclCharSet::KanjiLo2,
_ => ExclCharSet::Byte,
}
}
}
@ -583,97 +628,82 @@ static STATE_TRANSITION: [(State, Action); 70] = [
// STATE_TRANSITION[current_state + next_character] == (next_state, what_to_do)
// Init state:
(State::Init, Action::Idle), // End
(State::Alpha, Action::Idle), // Symbol
(State::Numeric, Action::Idle), // Numeric
(State::Alpha, Action::Idle), // Alpha
(State::KanjiHi12, Action::Idle), // KanjiHi1
(State::KanjiHi12, Action::Idle), // KanjiHi2
(State::KanjiHi3, Action::Idle), // KanjiHi3
(State::Byte, Action::Idle), // KanjiLo1
(State::Byte, Action::Idle), // KanjiLo2
(State::Byte, Action::Idle), // Byte
(State::Init, Action::Idle), // End
(State::Alpha, Action::Idle), // Symbol
(State::Numeric, Action::Idle), // Numeric
(State::Alpha, Action::Idle), // Alpha
(State::KanjiHi12, Action::Idle), // KanjiHi1
(State::KanjiHi12, Action::Idle), // KanjiHi2
(State::KanjiHi3, Action::Idle), // KanjiHi3
(State::Byte, Action::Idle), // KanjiLo1
(State::Byte, Action::Idle), // KanjiLo2
(State::Byte, Action::Idle), // Byte
// Numeric state:
(State::Init, Action::Numeric), // End
(State::Alpha, Action::Numeric), // Symbol
(State::Numeric, Action::Idle), // Numeric
(State::Alpha, Action::Numeric), // Alpha
(State::KanjiHi12, Action::Numeric), // KanjiHi1
(State::KanjiHi12, Action::Numeric), // KanjiHi2
(State::KanjiHi3, Action::Numeric), // KanjiHi3
(State::Byte, Action::Numeric), // KanjiLo1
(State::Byte, Action::Numeric), // KanjiLo2
(State::Byte, Action::Numeric), // Byte
(State::Init, Action::Numeric), // End
(State::Alpha, Action::Numeric), // Symbol
(State::Numeric, Action::Idle), // Numeric
(State::Alpha, Action::Numeric), // Alpha
(State::KanjiHi12, Action::Numeric), // KanjiHi1
(State::KanjiHi12, Action::Numeric), // KanjiHi2
(State::KanjiHi3, Action::Numeric), // KanjiHi3
(State::Byte, Action::Numeric), // KanjiLo1
(State::Byte, Action::Numeric), // KanjiLo2
(State::Byte, Action::Numeric), // Byte
// Alpha state:
(State::Init, Action::Alpha), // End
(State::Alpha, Action::Idle), // Symbol
(State::Numeric, Action::Alpha), // Numeric
(State::Alpha, Action::Idle), // Alpha
(State::KanjiHi12, Action::Alpha), // KanjiHi1
(State::KanjiHi12, Action::Alpha), // KanjiHi2
(State::KanjiHi3, Action::Alpha), // KanjiHi3
(State::Byte, Action::Alpha), // KanjiLo1
(State::Byte, Action::Alpha), // KanjiLo2
(State::Byte, Action::Alpha), // Byte
(State::Init, Action::Alpha), // End
(State::Alpha, Action::Idle), // Symbol
(State::Numeric, Action::Alpha), // Numeric
(State::Alpha, Action::Idle), // Alpha
(State::KanjiHi12, Action::Alpha), // KanjiHi1
(State::KanjiHi12, Action::Alpha), // KanjiHi2
(State::KanjiHi3, Action::Alpha), // KanjiHi3
(State::Byte, Action::Alpha), // KanjiLo1
(State::Byte, Action::Alpha), // KanjiLo2
(State::Byte, Action::Alpha), // Byte
// Byte state:
(State::Init, Action::Byte), // End
(State::Alpha, Action::Byte), // Symbol
(State::Numeric, Action::Byte), // Numeric
(State::Alpha, Action::Byte), // Alpha
(State::KanjiHi12, Action::Byte), // KanjiHi1
(State::KanjiHi12, Action::Byte), // KanjiHi2
(State::KanjiHi3, Action::Byte), // KanjiHi3
(State::Byte, Action::Idle), // KanjiLo1
(State::Byte, Action::Idle), // KanjiLo2
(State::Byte, Action::Idle), // Byte
(State::Init, Action::Byte), // End
(State::Alpha, Action::Byte), // Symbol
(State::Numeric, Action::Byte), // Numeric
(State::Alpha, Action::Byte), // Alpha
(State::KanjiHi12, Action::Byte), // KanjiHi1
(State::KanjiHi12, Action::Byte), // KanjiHi2
(State::KanjiHi3, Action::Byte), // KanjiHi3
(State::Byte, Action::Idle), // KanjiLo1
(State::Byte, Action::Idle), // KanjiLo2
(State::Byte, Action::Idle), // Byte
// KanjiHi12 state:
(State::Init, Action::KanjiAndSingleByte), // End
(State::Alpha, Action::KanjiAndSingleByte), // Symbol
(State::Numeric, Action::KanjiAndSingleByte), // Numeric
(State::Kanji, Action::Idle), // Alpha
(State::Kanji, Action::Idle), // KanjiHi1
(State::Kanji, Action::Idle), // KanjiHi2
(State::Kanji, Action::Idle), // KanjiHi3
(State::Kanji, Action::Idle), // KanjiLo1
(State::Kanji, Action::Idle), // KanjiLo2
(State::Byte, Action::KanjiAndSingleByte), // Byte
(State::Init, Action::KanjiAndSingleByte), // End
(State::Alpha, Action::KanjiAndSingleByte), // Symbol
(State::Numeric, Action::KanjiAndSingleByte), // Numeric
(State::Kanji, Action::Idle), // Alpha
(State::Kanji, Action::Idle), // KanjiHi1
(State::Kanji, Action::Idle), // KanjiHi2
(State::Kanji, Action::Idle), // KanjiHi3
(State::Kanji, Action::Idle), // KanjiLo1
(State::Kanji, Action::Idle), // KanjiLo2
(State::Byte, Action::KanjiAndSingleByte), // Byte
// KanjiHi3 state:
(State::Init, Action::KanjiAndSingleByte), // End
(State::Alpha, Action::KanjiAndSingleByte), // Symbol
(State::Numeric, Action::KanjiAndSingleByte), // Numeric
(State::Kanji, Action::Idle), // Alpha
(State::Kanji, Action::Idle), // KanjiHi1
(State::KanjiHi12, Action::KanjiAndSingleByte), // KanjiHi2
(State::KanjiHi3, Action::KanjiAndSingleByte), // KanjiHi3
(State::Kanji, Action::Idle), // KanjiLo1
(State::Byte, Action::KanjiAndSingleByte), // KanjiLo2
(State::Byte, Action::KanjiAndSingleByte), // Byte
(State::Init, Action::KanjiAndSingleByte), // End
(State::Alpha, Action::KanjiAndSingleByte), // Symbol
(State::Numeric, Action::KanjiAndSingleByte), // Numeric
(State::Kanji, Action::Idle), // Alpha
(State::Kanji, Action::Idle), // KanjiHi1
(State::KanjiHi12, Action::KanjiAndSingleByte), // KanjiHi2
(State::KanjiHi3, Action::KanjiAndSingleByte), // KanjiHi3
(State::Kanji, Action::Idle), // KanjiLo1
(State::Byte, Action::KanjiAndSingleByte), // KanjiLo2
(State::Byte, Action::KanjiAndSingleByte), // Byte
// Kanji state:
(State::Init, Action::Kanji), // End
(State::Alpha, Action::Kanji), // Symbol
(State::Numeric, Action::Kanji), // Numeric
(State::Alpha, Action::Kanji), // Alpha
(State::KanjiHi12, Action::Idle), // KanjiHi1
(State::KanjiHi12, Action::Idle), // KanjiHi2
(State::KanjiHi3, Action::Idle), // KanjiHi3
(State::Byte, Action::Kanji), // KanjiLo1
(State::Byte, Action::Kanji), // KanjiLo2
(State::Byte, Action::Kanji), // Byte
(State::Init, Action::Kanji), // End
(State::Alpha, Action::Kanji), // Symbol
(State::Numeric, Action::Kanji), // Numeric
(State::Alpha, Action::Kanji), // Alpha
(State::KanjiHi12, Action::Idle), // KanjiHi1
(State::KanjiHi12, Action::Idle), // KanjiHi2
(State::KanjiHi3, Action::Idle), // KanjiHi3
(State::Byte, Action::Kanji), // KanjiLo1
(State::Byte, Action::Kanji), // KanjiLo2
(State::Byte, Action::Kanji), // Byte
];
//}}}

59
src/render/image.rs
View file

@ -1,9 +1,9 @@
#![cfg(feature="image")]
use render::{Pixel, Canvas};
use render::{Canvas, Pixel};
use types::Color;
use image::{Pixel as ImagePixel, Rgb, Rgba, Luma, LumaA, Primitive, ImageBuffer};
use image::{ImageBuffer, Luma, LumaA, Pixel as ImagePixel, Primitive, Rgb, Rgba};
macro_rules! impl_pixel_for_image_pixel {
($p:ident<$s:ident>: $c:pat => $d:expr) => {
@ -50,12 +50,26 @@ mod render_tests {
#[test]
fn test_render_luma8_unsized() {
let image = Renderer::<Luma<u8>>::new(&[
Color::Light, Color::Dark, Color::Dark,
Color::Dark, Color::Light, Color::Light,
Color::Light, Color::Dark, Color::Light,
], 3, 1).module_dimensions(1, 1).build();
let image = Renderer::<Luma<u8>>::new(
&[
Color::Light,
Color::Dark,
Color::Dark,
//
Color::Dark,
Color::Light,
Color::Light,
//
Color::Light,
Color::Dark,
Color::Light,
],
3,
1,
).module_dimensions(1, 1)
.build();
#[cfg_attr(rustfmt, rustfmt_skip)]
let expected = [
255, 255, 255, 255, 255,
255, 255, 0, 0, 255,
@ -68,11 +82,12 @@ mod render_tests {
#[test]
fn test_render_rgba_unsized() {
let image = Renderer::<Rgba<u8>>::new(&[
Color::Light, Color::Dark,
Color::Dark, Color::Dark,
], 2, 1).module_dimensions(1, 1).build();
let image =
Renderer::<Rgba<u8>>::new(&[Color::Light, Color::Dark, Color::Dark, Color::Dark], 2, 1)
.module_dimensions(1, 1)
.build();
#[cfg_attr(rustfmt, rustfmt_skip)]
let expected: &[u8] = &[
255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255,
255,255,255,255, 255,255,255,255, 0, 0, 0,255, 255,255,255,255,
@ -85,11 +100,14 @@ mod render_tests {
#[test]
fn test_render_resized_min() {
let image = Renderer::<Luma<u8>>::new(&[
Color::Dark, Color::Light,
Color::Light, Color::Dark,
], 2, 1).min_dimensions(10, 10).build();
let image = Renderer::<Luma<u8>>::new(
&[Color::Dark, Color::Light, Color::Light, Color::Dark],
2,
1,
).min_dimensions(10, 10)
.build();
#[cfg_attr(rustfmt, rustfmt_skip)]
let expected: &[u8] = &[
255,255,255, 255,255,255, 255,255,255, 255,255,255,
255,255,255, 255,255,255, 255,255,255, 255,255,255,
@ -114,11 +132,14 @@ mod render_tests {
#[test]
fn test_render_resized_max() {
let image = Renderer::<Luma<u8>>::new(&[
Color::Dark, Color::Light,
Color::Light, Color::Dark,
], 2, 1).max_dimensions(10, 5).build();
let image = Renderer::<Luma<u8>>::new(
&[Color::Dark, Color::Light, Color::Light, Color::Dark],
2,
1,
).max_dimensions(10, 5)
.build();
#[cfg_attr(rustfmt, rustfmt_skip)]
let expected: &[u8] = &[
255,255, 255,255, 255,255, 255,255,

31
src/render/mod.rs
View file

@ -2,6 +2,7 @@
use std::cmp::max;
use types::Color;
use cast::As;
pub mod image;
pub mod string;
@ -17,7 +18,7 @@ pub trait Pixel: Copy + Sized {
/// The type that stores an intermediate buffer before finalizing to a
/// concrete image
type Canvas: Canvas<Pixel=Self, Image=Self::Image>;
type Canvas: Canvas<Pixel = Self, Image = Self::Image>;
/// Obtains the default module size. The result must be at least 1×1.
fn default_unit_size() -> (u32, u32) {
@ -40,8 +41,8 @@ pub trait Canvas: Sized {
fn draw_dark_pixel(&mut self, x: u32, y: u32);
fn draw_dark_rect(&mut self, left: u32, top: u32, width: u32, height: u32) {
for y in top .. (top + height) {
for x in left .. (left + width) {
for y in top..(top + height) {
for x in left..(left + width) {
self.draw_dark_pixel(x, y);
}
}
@ -57,6 +58,7 @@ pub trait Canvas: Sized {
/// A QR code renderer. This is a builder type which converts a bool-vector into
/// an image.
#[cfg_attr(feature = "cargo-clippy", allow(stutter))] // rust-lang-nursery/rust-clippy#2212 ಠ_ಠ
pub struct Renderer<'a, P: Pixel> {
content: &'a [Color],
modules_count: u32, // <- we call it `modules_count` here to avoid ambiguity of `width`.
@ -74,7 +76,7 @@ impl<'a, P: Pixel> Renderer<'a, P> {
assert!(modules_count * modules_count == content.len());
Renderer {
content,
modules_count: modules_count as u32,
modules_count: modules_count.as_u32(),
quiet_zone,
module_size: P::default_unit_size(),
dark_color: P::default_color(Color::Dark),
@ -102,7 +104,7 @@ impl<'a, P: Pixel> Renderer<'a, P> {
}
/// Sets the size of each module in pixels. Default is 8px.
#[deprecated(since="0.4.0", note="use `.module_dimensions(width, width)` instead")]
#[deprecated(since = "0.4.0", note = "use `.module_dimensions(width, width)` instead")]
pub fn module_size(&mut self, width: u32) -> &mut Self {
self.module_dimensions(width, width)
}
@ -113,7 +115,7 @@ impl<'a, P: Pixel> Renderer<'a, P> {
self
}
#[deprecated(since="0.4.0", note="use `.min_dimensions(width, width)` instead")]
#[deprecated(since = "0.4.0", note = "use `.min_dimensions(width, width)` instead")]
pub fn min_width(&mut self, width: u32) -> &mut Self {
self.min_dimensions(width, width)
}
@ -154,7 +156,8 @@ impl<'a, P: Pixel> Renderer<'a, P> {
}
/// Renders the QR code into an image.
#[deprecated(since="0.4.0", note="renamed to `.build()` to de-emphasize the image connection")]
#[deprecated(since = "0.4.0",
note = "renamed to `.build()` to de-emphasize the image connection")]
pub fn to_image(&self) -> P::Image {
self.build()
}
@ -162,7 +165,11 @@ impl<'a, P: Pixel> Renderer<'a, P> {
/// Renders the QR code into an image.
pub fn build(&self) -> P::Image {
let w = self.modules_count;
let qz = if self.has_quiet_zone { self.quiet_zone } else { 0 };
let qz = if self.has_quiet_zone {
self.quiet_zone
} else {
0
};
let width = w + 2 * qz;
let (mw, mh) = self.module_size;
@ -171,11 +178,11 @@ impl<'a, P: Pixel> Renderer<'a, P> {
let mut canvas = P::Canvas::new(real_width, real_height, self.dark_color, self.light_color);
let mut i = 0;
for y in 0 .. width {
for x in 0 .. width {
for y in 0..width {
for x in 0..width {
if qz <= x && x < w + qz && qz <= y && y < w + qz {
if self.content[i] != Color::Light {
canvas.draw_dark_rect(x*mw, y*mh, mw, mh);
canvas.draw_dark_rect(x * mw, y * mh, mw, mh);
}
i += 1;
}
@ -186,4 +193,4 @@ impl<'a, P: Pixel> Renderer<'a, P> {
}
}
//}}}
//}}}

58
src/render/string.rs
View file

@ -1,7 +1,8 @@
//! String rendering support.
use render::{Pixel, Canvas as RenderCanvas};
use render::{Canvas as RenderCanvas, Pixel};
use types::Color;
use cast::As;
pub trait Element: Copy {
fn default_color(color: Color) -> Self;
@ -11,7 +12,7 @@ pub trait Element: Copy {
impl Element for char {
fn default_color(color: Color) -> Self {
color.select('█', ' ')
color.select('\u{2588}', ' ')
}
fn strlen(self) -> usize {
@ -25,7 +26,7 @@ impl Element for char {
impl<'a> Element for &'a str {
fn default_color(color: Color) -> Self {
color.select("█", " ")
color.select("\u{2588}", " ")
}
fn strlen(self) -> usize {
@ -47,7 +48,7 @@ pub struct Canvas<P: Element> {
}
impl<P: Element> Pixel for P {
type Canvas = Canvas<P>;
type Canvas = Canvas<Self>;
type Image = String;
fn default_unit_size() -> (u32, u32) {
@ -64,29 +65,29 @@ impl<P: Element> RenderCanvas for Canvas<P> {
type Image = String;
fn new(width: u32, height: u32, dark_pixel: P, light_pixel: P) -> Self {
let width = width as usize;
let height = height as isize;
let dark_cap = dark_pixel.strlen() as isize;
let light_cap = light_pixel.strlen() as isize;
Canvas {
buffer: vec![light_pixel; width * (height as usize)],
let width = width.as_usize();
let height = height.as_isize();
let dark_cap = dark_pixel.strlen().as_isize();
let light_cap = light_pixel.strlen().as_isize();
Self {
buffer: vec![light_pixel; width * height.as_usize()],
width,
dark_pixel,
dark_cap_inc: dark_cap - light_cap,
capacity: light_cap * (width as isize) * height + (height - 1),
capacity: light_cap * width.as_isize() * height + (height - 1),
}
}
fn draw_dark_pixel(&mut self, x: u32, y: u32) {
let x = x as usize;
let y = y as usize;
let x = x.as_usize();
let y = y.as_usize();
self.capacity += self.dark_cap_inc;
self.buffer[x + y*self.width] = self.dark_pixel;
self.buffer[x + y * self.width] = self.dark_pixel;
}
fn into_image(self) -> String {
let mut result = String::with_capacity(self.capacity as usize);
let mut result = String::with_capacity(self.capacity.as_usize());
for (i, pixel) in self.buffer.into_iter().enumerate() {
if i != 0 && i % self.width == 0 {
result.push('\n');
@ -101,12 +102,9 @@ impl<P: Element> RenderCanvas for Canvas<P> {
fn test_render_to_string() {
use render::Renderer;
let colors = &[
Color::Dark, Color::Light,
Color::Light, Color::Dark,
];
let colors = &[Color::Dark, Color::Light, Color::Light, Color::Dark];
let image: String = Renderer::<char>::new(colors, 2, 1).build();
assert_eq!(&image, " \n █ \n █ \n ");
assert_eq!(&image, " \n \u{2588} \n \u{2588} \n ");
let image2 = Renderer::new(colors, 2, 1)
.light_color("A")
@ -114,13 +112,15 @@ fn test_render_to_string() {
.module_dimensions(2, 2)
.build();
assert_eq!(&image2, "\
AAAAAAAA\n\
AAAAAAAA\n\
AA!B!!B!AAAA\n\
AA!B!!B!AAAA\n\
AAAA!B!!B!AA\n\
AAAA!B!!B!AA\n\
AAAAAAAA\n\
AAAAAAAA");
assert_eq!(
&image2,
"AAAAAAAA\n\
AAAAAAAA\n\
AA!B!!B!AAAA\n\
AA!B!!B!AAAA\n\
AAAA!B!!B!AA\n\
AAAA!B!!B!AA\n\
AAAAAAAA\n\
AAAAAAAA"
);
}

23
src/render/svg.rs
View file

@ -19,7 +19,7 @@
use std::fmt::Write;
use std::marker::PhantomData;
use render::{Pixel, Canvas as RenderCanvas};
use render::{Canvas as RenderCanvas, Pixel};
use types::Color as ModuleColor;
/// An SVG color.
@ -48,8 +48,17 @@ impl<'a> RenderCanvas for Canvas<'a> {
fn new(width: u32, height: u32, dark_pixel: Color<'a>, light_pixel: Color<'a>) -> Self {
Canvas {
svg: format!(
r#"<?xml version="1.0" standalone="yes"?><svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="{w}" height="{h}" shape-rendering="crispEdges"><rect x="0" y="0" width="{w}" height="{h}" fill="{bg}"/><path fill="{fg}" d=""#,
w=width, h=height, fg=dark_pixel.0, bg=light_pixel.0
concat!(
r#"<?xml version="1.0" standalone="yes"?>"#,
r#"<svg xmlns="http://www.w3.org/2000/svg""#,
r#" version="1.1" width="{w}" height="{h}" shape-rendering="crispEdges">"#,
r#"<rect x="0" y="0" width="{w}" height="{h}" fill="{bg}"/>"#,
r#"<path fill="{fg}" d=""#,
),
w = width,
h = height,
fg = dark_pixel.0,
bg = light_pixel.0
),
marker: PhantomData,
}
@ -60,10 +69,12 @@ impl<'a> RenderCanvas for Canvas<'a> {
}
fn draw_dark_rect(&mut self, left: u32, top: u32, width: u32, height: u32) {
write!(self.svg, "M{l} {t}h{w}v{h}H{l}V{t}", l=left, t=top, w=width, h=height).unwrap();
write!(self.svg, "M{l} {t}h{w}v{h}H{l}V{t}", l = left, t = top, w = width, h = height)
.unwrap();
}
fn into_image(self) -> String {
self.svg + r#""/></svg>"#
fn into_image(mut self) -> String {
self.svg.push_str(r#""/></svg>"#);
self.svg
}
}

54
src/types.rs
View file

@ -1,7 +1,8 @@
use std::default::Default;
use std::cmp::{PartialOrd, Ordering};
use std::fmt::{Display, Formatter, Error};
use std::cmp::{Ordering, PartialOrd};
use std::fmt::{Display, Error, Formatter};
use std::ops::Not;
use cast::As;
//------------------------------------------------------------------------------
//{{{ QrResult
@ -76,8 +77,8 @@ impl Color {
}
impl Not for Color {
type Output = Color;
fn not(self) -> Color {
type Output = Self;
fn not(self) -> Self {
match self {
Color::Light => Color::Dark,
Color::Dark => Color::Light,
@ -146,26 +147,28 @@ impl Version {
/// If the entry compares equal to the default value of T, this method
/// returns `Err(QrError::InvalidVersion)`.
pub fn fetch<T>(&self, ec_level: EcLevel, table: &[[T; 4]]) -> QrResult<T>
where T: PartialEq + Default + Copy
where
T: PartialEq + Default + Copy,
{
match *self {
Version::Normal(v @ 1...40) => Ok(table[v as usize - 1][ec_level as usize]),
Version::Normal(v @ 1...40) => {
return Ok(table[(v - 1).as_usize()][ec_level as usize]);
}
Version::Micro(v @ 1...4) => {
let obj = table[v as usize + 39][ec_level as usize];
if obj != Default::default() {
Ok(obj)
} else {
Err(QrError::InvalidVersion)
let obj = table[(v + 39).as_usize()][ec_level as usize];
if obj != T::default() {
return Ok(obj);
}
}
_ => Err(QrError::InvalidVersion)
_ => {}
}
Err(QrError::InvalidVersion)
}
/// The number of bits needed to encode the mode indicator.
pub fn mode_bits_count(&self) -> usize {
match *self {
Version::Micro(a) => (a - 1) as usize,
Version::Micro(a) => (a - 1).as_usize(),
_ => 4,
}
}
@ -213,7 +216,7 @@ impl Mode {
pub fn length_bits_count(&self, version: Version) -> usize {
match version {
Version::Micro(a) => {
let a = a as usize;
let a = a.as_usize();
match *self {
Mode::Numeric => 2 + a,
Mode::Alphanumeric | Mode::Byte => 1 + a,
@ -223,8 +226,7 @@ impl Mode {
Version::Normal(1...9) => match *self {
Mode::Numeric => 10,
Mode::Alphanumeric => 9,
Mode::Byte => 8,
Mode::Kanji => 8,
Mode::Byte | Mode::Kanji => 8,
},
Version::Normal(10...26) => match *self {
Mode::Numeric => 12,
@ -268,7 +270,7 @@ impl Mode {
/// assert!(a <= c);
/// assert!(b <= c);
///
pub fn max(&self, other: Mode) -> Mode {
pub fn max(&self, other: Self) -> Self {
match self.partial_cmp(&other) {
Some(Ordering::Less) | Some(Ordering::Equal) => other,
Some(Ordering::Greater) => *self,
@ -280,15 +282,15 @@ impl Mode {
impl PartialOrd for Mode {
/// Defines a partial ordering between modes. If `a <= b`, then `b` contains
/// a superset of all characters supported by `a`.
fn partial_cmp(&self, other: &Mode) -> Option<Ordering> {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
match (*self, *other) {
(Mode::Numeric, Mode::Alphanumeric) => Some(Ordering::Less),
(Mode::Alphanumeric, Mode::Numeric) => Some(Ordering::Greater),
(Mode::Numeric, Mode::Byte) => Some(Ordering::Less),
(Mode::Byte, Mode::Numeric) => Some(Ordering::Greater),
(Mode::Alphanumeric, Mode::Byte) => Some(Ordering::Less),
(Mode::Byte, Mode::Alphanumeric) => Some(Ordering::Greater),
(Mode::Numeric, Mode::Alphanumeric) |
(Mode::Numeric, Mode::Byte) |
(Mode::Alphanumeric, Mode::Byte) |
(Mode::Kanji, Mode::Byte) => Some(Ordering::Less),
(Mode::Alphanumeric, Mode::Numeric) |
(Mode::Byte, Mode::Numeric) |
(Mode::Byte, Mode::Alphanumeric) |
(Mode::Byte, Mode::Kanji) => Some(Ordering::Greater),
(a, b) if a == b => Some(Ordering::Equal),
_ => None,
@ -298,7 +300,7 @@ impl PartialOrd for Mode {
#[cfg(test)]
mod mode_tests {
use types::Mode::{Numeric, Alphanumeric, Byte, Kanji};
use types::Mode::{Alphanumeric, Byte, Kanji, Numeric};
#[test]
fn test_mode_order() {
@ -321,5 +323,3 @@ mod mode_tests {
}
//}}}