mirror of
https://gitee.com/openharmony/third_party_qrcodegen
synced 2024-10-06 21:24:09 +00:00
- In the project (top-level) readme file, kept one language's code example and moved all others out to language-specific readme files.
- Added a readme file for each programming language implementation (port) if it didn't already have one, mostly by copying the project readme text, and then added/edited a couple of feature points.
This commit is contained in:
Project Nayuki
parent
d02fe511cc
commit
5990e6a99c
120
Readme.markdown
120
Readme.markdown
@ -41,7 +41,7 @@ More information about QR Code technology and this library's design can be found
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Examples
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--------
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Java language:
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The code below is in Java, but the other language ports are designed with essentially the same API naming and behavior.
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```java
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import java.awt.image.BufferedImage;
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@ -65,124 +65,6 @@ for (int y = 0; y < qr1.size; y++) {
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}
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```
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TypeScript/JavaScript languages:
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```typescript
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// Name abbreviated for the sake of these examples here
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const QRC = qrcodegen.QrCode;
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// Simple operation
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const qr0 = QRC.encodeText("Hello, world!", QRC.Ecc.MEDIUM);
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const svg = toSvgString(qr0, 4); // See qrcodegen-input-demo
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// Manual operation
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const segs = qrcodegen.QrSegment.makeSegments("3141592653589793238462643383");
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const qr1 = QRC.encodeSegments(segs, QRC.Ecc.HIGH, 5, 5, 2, false);
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for (let y = 0; y < qr1.size; y++) {
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for (let x = 0; x < qr1.size; x++) {
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(... paint qr1.getModule(x, y) ...)
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}
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}
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```
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Python language:
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```python
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from qrcodegen import *
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# Simple operation
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qr0 = QrCode.encode_text("Hello, world!", QrCode.Ecc.MEDIUM)
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svg = to_svg_str(qr0, 4) # See qrcodegen-demo
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# Manual operation
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segs = QrSegment.make_segments("3141592653589793238462643383")
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qr1 = QrCode.encode_segments(segs, QrCode.Ecc.HIGH, 5, 5, 2, False)
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for y in range(qr1.get_size()):
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for x in range(qr1.get_size()):
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(... paint qr1.get_module(x, y) ...)
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```
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C++ language:
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```c++
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#include <string>
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#include <vector>
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#include "QrCode.hpp"
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using namespace qrcodegen;
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// Simple operation
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QrCode qr0 = QrCode::encodeText("Hello, world!", QrCode::Ecc::MEDIUM);
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std::string svg = toSvgString(qr0, 4); // See QrCodeGeneratorDemo
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// Manual operation
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std::vector<QrSegment> segs =
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QrSegment::makeSegments("3141592653589793238462643383");
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QrCode qr1 = QrCode::encodeSegments(
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segs, QrCode::Ecc::HIGH, 5, 5, 2, false);
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for (int y = 0; y < qr1.getSize(); y++) {
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for (int x = 0; x < qr1.getSize(); x++) {
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(... paint qr1.getModule(x, y) ...)
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}
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}
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```
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C language:
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```c
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#include <stdbool.h>
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#include <stdint.h>
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#include "qrcodegen.h"
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// Text data
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uint8_t qr0[qrcodegen_BUFFER_LEN_MAX];
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uint8_t tempBuffer[qrcodegen_BUFFER_LEN_MAX];
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bool ok = qrcodegen_encodeText("Hello, world!",
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tempBuffer, qr0, qrcodegen_Ecc_MEDIUM,
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qrcodegen_VERSION_MIN, qrcodegen_VERSION_MAX,
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qrcodegen_Mask_AUTO, true);
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if (!ok)
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return;
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int size = qrcodegen_getSize(qr0);
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for (int y = 0; y < size; y++) {
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for (int x = 0; x < size; x++) {
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(... paint qrcodegen_getModule(qr0, x, y) ...)
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}
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}
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// Binary data
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uint8_t dataAndTemp[qrcodegen_BUFFER_LEN_FOR_VERSION(7)]
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= {0xE3, 0x81, 0x82};
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uint8_t qr1[qrcodegen_BUFFER_LEN_FOR_VERSION(7)];
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ok = qrcodegen_encodeBinary(dataAndTemp, 3, qr1,
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qrcodegen_Ecc_HIGH, 2, 7, qrcodegen_Mask_4, false);
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```
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Rust language:
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```rust
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extern crate qrcodegen;
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use qrcodegen::QrCode;
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use qrcodegen::QrCodeEcc;
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use qrcodegen::QrSegment;
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// Simple operation
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let qr = QrCode::encode_text("Hello, world!",
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QrCodeEcc::Medium).unwrap();
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let svg = to_svg_string(&qr, 4); // See qrcodegen-demo
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// Manual operation
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let text: &str = "3141592653589793238462643383";
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let segs = QrSegment::make_segments(text);
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let qr = QrCode::encode_segments_advanced(&segs, QrCodeEcc::High,
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Version::new(5), Version::new(5), Some(Mask::new(2)), false).unwrap();
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for y in 0 .. qr.size() {
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for x in 0 .. qr.size() {
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(... paint qr.get_module(x, y) ...)
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}
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}
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```
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License
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-------
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70
c/Readme.markdown
Normal file
70
c/Readme.markdown
Normal file
@ -0,0 +1,70 @@
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QR Code generator library - C
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=============================
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Introduction
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------------
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This project aims to be the best, clearest QR Code generator library. The primary goals are flexible options and absolute correctness. Secondary goals are compact implementation size and good documentation comments.
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Home page with live JavaScript demo, extensive descriptions, and competitor comparisons: https://www.nayuki.io/page/qr-code-generator-library
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Features
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--------
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Core features:
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* Significantly shorter code but more documentation comments compared to competing libraries
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* Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
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* Output format: Raw modules/pixels of the QR symbol
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* Detects finder-like penalty patterns more accurately than other implementations
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* Encodes numeric and special-alphanumeric text in less space than general text
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* Completely avoids heap allocation (`malloc()`), instead relying on suitably sized buffers from the caller and fixed-size stack allocations
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* Coded carefully to prevent memory corruption, integer overflow, platform-dependent inconsistencies, and undefined behavior; tested rigorously to confirm safety
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* Open-source code under the permissive MIT License
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Manual parameters:
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* User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data
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* User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one
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* User can specify absolute error correction level, or allow the library to boost it if it doesn't increase the version number
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* User can create a list of data segments manually and add ECI segments
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More information about QR Code technology and this library's design can be found on the project home page.
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Examples
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--------
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```c
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#include <stdbool.h>
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#include <stdint.h>
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#include "qrcodegen.h"
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// Text data
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uint8_t qr0[qrcodegen_BUFFER_LEN_MAX];
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uint8_t tempBuffer[qrcodegen_BUFFER_LEN_MAX];
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bool ok = qrcodegen_encodeText("Hello, world!",
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tempBuffer, qr0, qrcodegen_Ecc_MEDIUM,
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qrcodegen_VERSION_MIN, qrcodegen_VERSION_MAX,
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qrcodegen_Mask_AUTO, true);
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if (!ok)
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return;
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int size = qrcodegen_getSize(qr0);
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for (int y = 0; y < size; y++) {
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for (int x = 0; x < size; x++) {
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(... paint qrcodegen_getModule(qr0, x, y) ...)
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}
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}
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// Binary data
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uint8_t dataAndTemp[qrcodegen_BUFFER_LEN_FOR_VERSION(7)]
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= {0xE3, 0x81, 0x82};
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uint8_t qr1[qrcodegen_BUFFER_LEN_FOR_VERSION(7)];
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ok = qrcodegen_encodeBinary(dataAndTemp, 3, qr1,
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qrcodegen_Ecc_HIGH, 2, 7, qrcodegen_Mask_4, false);
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```
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More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/c/qrcodegen-demo.c .
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61
cpp/Readme.markdown
Normal file
61
cpp/Readme.markdown
Normal file
@ -0,0 +1,61 @@
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QR Code generator library - C++
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===============================
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Introduction
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------------
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This project aims to be the best, clearest QR Code generator library. The primary goals are flexible options and absolute correctness. Secondary goals are compact implementation size and good documentation comments.
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Home page with live JavaScript demo, extensive descriptions, and competitor comparisons: https://www.nayuki.io/page/qr-code-generator-library
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Features
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--------
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Core features:
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* Significantly shorter code but more documentation comments compared to competing libraries
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* Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
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* Output format: Raw modules/pixels of the QR symbol
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* Detects finder-like penalty patterns more accurately than other implementations
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* Encodes numeric and special-alphanumeric text in less space than general text
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* Coded carefully to prevent memory corruption, integer overflow, platform-dependent inconsistencies, and undefined behavior; tested rigorously to confirm safety
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* Open-source code under the permissive MIT License
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|
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Manual parameters:
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* User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data
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* User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one
|
||||
* User can specify absolute error correction level, or allow the library to boost it if it doesn't increase the version number
|
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* User can create a list of data segments manually and add ECI segments
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|
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More information about QR Code technology and this library's design can be found on the project home page.
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Examples
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--------
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```c++
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#include <string>
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#include <vector>
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#include "QrCode.hpp"
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using namespace qrcodegen;
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// Simple operation
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QrCode qr0 = QrCode::encodeText("Hello, world!", QrCode::Ecc::MEDIUM);
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std::string svg = toSvgString(qr0, 4); // See QrCodeGeneratorDemo
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// Manual operation
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std::vector<QrSegment> segs =
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QrSegment::makeSegments("3141592653589793238462643383");
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QrCode qr1 = QrCode::encodeSegments(
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segs, QrCode::Ecc::HIGH, 5, 5, 2, false);
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for (int y = 0; y < qr1.getSize(); y++) {
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for (int x = 0; x < qr1.getSize(); x++) {
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(... paint qr1.getModule(x, y) ...)
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}
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}
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```
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More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/cpp/QrCodeGeneratorDemo.cpp .
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65
java/Readme.markdown
Normal file
65
java/Readme.markdown
Normal file
@ -0,0 +1,65 @@
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QR Code generator library - Java
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================================
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Introduction
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------------
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|
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This project aims to be the best, clearest QR Code generator library. The primary goals are flexible options and absolute correctness. Secondary goals are compact implementation size and good documentation comments.
|
||||
|
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Home page with live JavaScript demo, extensive descriptions, and competitor comparisons: https://www.nayuki.io/page/qr-code-generator-library
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|
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|
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Features
|
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--------
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|
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Core features:
|
||||
|
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* Significantly shorter code but more documentation comments compared to competing libraries
|
||||
* Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
|
||||
* Output format: Raw modules/pixels of the QR symbol
|
||||
* Detects finder-like penalty patterns more accurately than other implementations
|
||||
* Encodes numeric and special-alphanumeric text in less space than general text
|
||||
* Open-source code under the permissive MIT License
|
||||
|
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Manual parameters:
|
||||
|
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* User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data
|
||||
* User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one
|
||||
* User can specify absolute error correction level, or allow the library to boost it if it doesn't increase the version number
|
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* User can create a list of data segments manually and add ECI segments
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Optional advanced features:
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* Encodes Japanese Unicode text in kanji mode to save a lot of space compared to UTF-8 bytes
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* Computes optimal segment mode switching for text with mixed numeric/alphanumeric/general/kanji parts
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|
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More information about QR Code technology and this library's design can be found on the project home page.
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|
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|
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Examples
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--------
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```java
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.util.List;
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import javax.imageio.ImageIO;
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import io.nayuki.qrcodegen.*;
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// Simple operation
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QrCode qr0 = QrCode.encodeText("Hello, world!", QrCode.Ecc.MEDIUM);
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BufferedImage img = toImage(qr0, 4, 10); // See QrCodeGeneratorDemo
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ImageIO.write(img, "png", new File("qr-code.png"));
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// Manual operation
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List<QrSegment> segs = QrSegment.makeSegments("3141592653589793238462643383");
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QrCode qr1 = QrCode.encodeSegments(segs, QrCode.Ecc.HIGH, 5, 5, 2, false);
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for (int y = 0; y < qr1.size; y++) {
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for (int x = 0; x < qr1.size; x++) {
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(... paint qr1.getModule(x, y) ...)
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}
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}
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```
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|
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More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/java/QrCodeGeneratorDemo.java .
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53
python/Readme.markdown
Normal file
53
python/Readme.markdown
Normal file
@ -0,0 +1,53 @@
|
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QR Code generator library - Python
|
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==================================
|
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|
||||
|
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Introduction
|
||||
------------
|
||||
|
||||
This project aims to be the best, clearest QR Code generator library. The primary goals are flexible options and absolute correctness. Secondary goals are compact implementation size and good documentation comments.
|
||||
|
||||
Home page with live JavaScript demo, extensive descriptions, and competitor comparisons: https://www.nayuki.io/page/qr-code-generator-library
|
||||
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
Core features:
|
||||
|
||||
* Significantly shorter code but more documentation comments compared to competing libraries
|
||||
* Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
|
||||
* Output format: Raw modules/pixels of the QR symbol
|
||||
* Detects finder-like penalty patterns more accurately than other implementations
|
||||
* Encodes numeric and special-alphanumeric text in less space than general text
|
||||
* Open-source code under the permissive MIT License
|
||||
|
||||
Manual parameters:
|
||||
|
||||
* User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data
|
||||
* User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one
|
||||
* User can specify absolute error correction level, or allow the library to boost it if it doesn't increase the version number
|
||||
* User can create a list of data segments manually and add ECI segments
|
||||
|
||||
More information about QR Code technology and this library's design can be found on the project home page.
|
||||
|
||||
|
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Examples
|
||||
--------
|
||||
|
||||
```python
|
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from qrcodegen import *
|
||||
|
||||
# Simple operation
|
||||
qr0 = QrCode.encode_text("Hello, world!", QrCode.Ecc.MEDIUM)
|
||||
svg = to_svg_str(qr0, 4) # See qrcodegen-demo
|
||||
|
||||
# Manual operation
|
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segs = QrSegment.make_segments("3141592653589793238462643383")
|
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qr1 = QrCode.encode_segments(segs, QrCode.Ecc.HIGH, 5, 5, 2, False)
|
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for y in range(qr1.get_size()):
|
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for x in range(qr1.get_size()):
|
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(... paint qr1.get_module(x, y) ...)
|
||||
```
|
||||
|
||||
More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/python/qrcodegen-demo.py .
|
||||
71
rust-no-heap/Readme.markdown
Normal file
71
rust-no-heap/Readme.markdown
Normal file
@ -0,0 +1,71 @@
|
||||
QR Code generator library - Rust, no heap
|
||||
=========================================
|
||||
|
||||
|
||||
Introduction
|
||||
------------
|
||||
|
||||
This project aims to be the best, clearest QR Code generator library. The primary goals are flexible options and absolute correctness. Secondary goals are compact implementation size and good documentation comments.
|
||||
|
||||
Home page with live JavaScript demo, extensive descriptions, and competitor comparisons: https://www.nayuki.io/page/qr-code-generator-library
|
||||
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
Core features:
|
||||
|
||||
* Significantly shorter code but more documentation comments compared to competing libraries
|
||||
* Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
|
||||
* Output format: Raw modules/pixels of the QR symbol
|
||||
* Detects finder-like penalty patterns more accurately than other implementations
|
||||
* Encodes numeric and special-alphanumeric text in less space than general text
|
||||
* Completely avoids heap allocation (e.g. `std::vec::Vec`), instead relying on suitably sized buffers from the caller and fixed-size stack allocations
|
||||
* Open-source code under the permissive MIT License
|
||||
|
||||
Manual parameters:
|
||||
|
||||
* User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data
|
||||
* User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one
|
||||
* User can specify absolute error correction level, or allow the library to boost it if it doesn't increase the version number
|
||||
* User can create a list of data segments manually and add ECI segments
|
||||
|
||||
More information about QR Code technology and this library's design can be found on the project home page.
|
||||
|
||||
|
||||
Examples
|
||||
--------
|
||||
|
||||
```rust
|
||||
extern crate qrcodegen;
|
||||
use qrcodegen::Mask;
|
||||
use qrcodegen::QrCode;
|
||||
use qrcodegen::QrCodeEcc;
|
||||
use qrcodegen::Version;
|
||||
|
||||
// Text data
|
||||
let mut outbuffer = vec![0u8; Version::MAX.buffer_len()];
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||||
let mut tempbuffer = vec![0u8; Version::MAX.buffer_len()];
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||||
let qr = QrCode::encode_text("Hello, world!",
|
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&mut tempbuffer, &mut outbuffer, QrCodeEcc::Medium,
|
||||
Version::MIN, Version::MAX, None, true).unwrap();
|
||||
let svg = to_svg_string(&qr, 4); // See qrcodegen-demo
|
||||
|
||||
// Binary data
|
||||
let mut outbuffer = vec![0u8; Version::MAX.buffer_len()];
|
||||
let mut dataandtemp = vec![0u8; Version::MAX.buffer_len()];
|
||||
dataandtemp[0] = 0xE3;
|
||||
dataandtemp[1] = 0x81;
|
||||
dataandtemp[2] = 0x82;
|
||||
let qr = QrCode::encode_binary(&mut dataandtemp, 3,
|
||||
&mut outbuffer, QrCodeEcc::High,
|
||||
Version::new(2), Version::new(7),
|
||||
Some(Mask::new(4)), false).unwrap();
|
||||
for y in 0 .. qr.size() {
|
||||
for x in 0 .. qr.size() {
|
||||
(... paint qr.get_module(x, y) ...)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/rust-no-heap/examples/qrcodegen-demo.rs .
|
||||
56
typescript-javascript/Readme.markdown
Normal file
56
typescript-javascript/Readme.markdown
Normal file
@ -0,0 +1,56 @@
|
||||
QR Code generator library - TypeScript
|
||||
======================================
|
||||
|
||||
|
||||
Introduction
|
||||
------------
|
||||
|
||||
This project aims to be the best, clearest QR Code generator library. The primary goals are flexible options and absolute correctness. Secondary goals are compact implementation size and good documentation comments.
|
||||
|
||||
Home page with live JavaScript demo, extensive descriptions, and competitor comparisons: https://www.nayuki.io/page/qr-code-generator-library
|
||||
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
Core features:
|
||||
|
||||
* Significantly shorter code but more documentation comments compared to competing libraries
|
||||
* Supports encoding all 40 versions (sizes) and all 4 error correction levels, as per the QR Code Model 2 standard
|
||||
* Output format: Raw modules/pixels of the QR symbol
|
||||
* Detects finder-like penalty patterns more accurately than other implementations
|
||||
* Encodes numeric and special-alphanumeric text in less space than general text
|
||||
* Open-source code under the permissive MIT License
|
||||
|
||||
Manual parameters:
|
||||
|
||||
* User can specify minimum and maximum version numbers allowed, then library will automatically choose smallest version in the range that fits the data
|
||||
* User can specify mask pattern manually, otherwise library will automatically evaluate all 8 masks and select the optimal one
|
||||
* User can specify absolute error correction level, or allow the library to boost it if it doesn't increase the version number
|
||||
* User can create a list of data segments manually and add ECI segments
|
||||
|
||||
More information about QR Code technology and this library's design can be found on the project home page.
|
||||
|
||||
|
||||
Examples
|
||||
--------
|
||||
|
||||
```typescript
|
||||
// Name abbreviated for the sake of these examples here
|
||||
const QRC = qrcodegen.QrCode;
|
||||
|
||||
// Simple operation
|
||||
const qr0 = QRC.encodeText("Hello, world!", QRC.Ecc.MEDIUM);
|
||||
const svg = toSvgString(qr0, 4); // See qrcodegen-input-demo
|
||||
|
||||
// Manual operation
|
||||
const segs = qrcodegen.QrSegment.makeSegments("3141592653589793238462643383");
|
||||
const qr1 = QRC.encodeSegments(segs, QRC.Ecc.HIGH, 5, 5, 2, false);
|
||||
for (let y = 0; y < qr1.size; y++) {
|
||||
for (let x = 0; x < qr1.size; x++) {
|
||||
(... paint qr1.getModule(x, y) ...)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/typescript-javascript/qrcodegen-output-demo.ts .
|
||||
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Block a user