# cJSON
Ultralightweight JSON parser in ANSI C.
## Table of contents
* [License](#license)
* [Usage](#usage)
* [Welcome to cJSON](#welcome-to-cjson)
* [Building](#building)
* [Copying the source](#copying-the-source)
* [CMake](#cmake)
* [Makefile](#makefile)
* [Vcpkg](#Vcpkg)
* [Including cJSON](#including-cjson)
* [Data Structure](#data-structure)
* [Working with the data structure](#working-with-the-data-structure)
* [Basic types](#basic-types)
* [Arrays](#arrays)
* [Objects](#objects)
* [Parsing JSON](#parsing-json)
* [Printing JSON](#printing-json)
* [Example](#example)
* [Printing](#printing)
* [Parsing](#parsing)
* [Caveats](#caveats)
* [Zero Character](#zero-character)
* [Character Encoding](#character-encoding)
* [C Standard](#c-standard)
* [Floating Point Numbers](#floating-point-numbers)
* [Deep Nesting Of Arrays And Objects](#deep-nesting-of-arrays-and-objects)
* [Thread Safety](#thread-safety)
* [Case Sensitivity](#case-sensitivity)
* [Duplicate Object Members](#duplicate-object-members)
* [Enjoy cJSON!](#enjoy-cjson)
## License
MIT License
> Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
>
> Permission is hereby granted, free of charge, to any person obtaining a copy
> of this software and associated documentation files (the "Software"), to deal
> in the Software without restriction, including without limitation the rights
> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> copies of the Software, and to permit persons to whom the Software is
> furnished to do so, subject to the following conditions:
>
> The above copyright notice and this permission notice shall be included in
> all copies or substantial portions of the Software.
>
> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> THE SOFTWARE.
## Usage
### Welcome to cJSON.
cJSON aims to be the dumbest possible parser that you can get your job done with.
It's a single file of C, and a single header file.
JSON is described best here: http://www.json.org/
It's like XML, but fat-free. You use it to move data around, store things, or just
generally represent your program's state.
As a library, cJSON exists to take away as much legwork as it can, but not get in your way.
As a point of pragmatism (i.e. ignoring the truth), I'm going to say that you can use it
in one of two modes: Auto and Manual. Let's have a quick run-through.
I lifted some JSON from this page: http://www.json.org/fatfree.html
That page inspired me to write cJSON, which is a parser that tries to share the same
philosophy as JSON itself. Simple, dumb, out of the way.
### Building
There are several ways to incorporate cJSON into your project.
#### copying the source
Because the entire library is only one C file and one header file, you can just copy `cJSON.h` and `cJSON.c` to your projects source and start using it.
cJSON is written in ANSI C (C89) in order to support as many platforms and compilers as possible.
#### CMake
With CMake, cJSON supports a full blown build system. This way you get the most features. CMake with an equal or higher version than 2.8.5 is supported. With CMake it is recommended to do an out of tree build, meaning the compiled files are put in a directory separate from the source files. So in order to build cJSON with CMake on a Unix platform, make a `build` directory and run CMake inside it.
```
mkdir build
cd build
cmake ..
```
This will create a Makefile and a bunch of other files. You can then compile it:
```
make
```
And install it with `make install` if you want. By default it installs the headers `/usr/local/include/cjson` and the libraries to `/usr/local/lib`. It also installs files for pkg-config to make it easier to detect and use an existing installation of CMake. And it installs CMake config files, that can be used by other CMake based projects to discover the library.
You can change the build process with a list of different options that you can pass to CMake. Turn them on with `On` and off with `Off`:
* `-DENABLE_CJSON_TEST=On`: Enable building the tests. (on by default)
* `-DENABLE_CJSON_UTILS=On`: Enable building cJSON_Utils. (off by default)
* `-DENABLE_TARGET_EXPORT=On`: Enable the export of CMake targets. Turn off if it makes problems. (on by default)
* `-DENABLE_CUSTOM_COMPILER_FLAGS=On`: Enable custom compiler flags (currently for Clang, GCC and MSVC). Turn off if it makes problems. (on by default)
* `-DENABLE_VALGRIND=On`: Run tests with [valgrind](http://valgrind.org). (off by default)
* `-DENABLE_SANITIZERS=On`: Compile cJSON with [AddressSanitizer](https://github.com/google/sanitizers/wiki/AddressSanitizer) and [UndefinedBehaviorSanitizer](https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html) enabled (if possible). (off by default)
* `-DENABLE_SAFE_STACK`: Enable the [SafeStack](https://clang.llvm.org/docs/SafeStack.html) instrumentation pass. Currently only works with the Clang compiler. (off by default)
* `-DBUILD_SHARED_LIBS=On`: Build the shared libraries. (on by default)
* `-DBUILD_SHARED_AND_STATIC_LIBS=On`: Build both shared and static libraries. (off by default)
* `-DCMAKE_INSTALL_PREFIX=/usr`: Set a prefix for the installation.
* `-DENABLE_LOCALES=On`: Enable the usage of localeconv method. ( on by default )
* `-DCJSON_OVERRIDE_BUILD_SHARED_LIBS=On`: Enable overriding the value of `BUILD_SHARED_LIBS` with `-DCJSON_BUILD_SHARED_LIBS`.
* `-DENABLE_CJSON_VERSION_SO`: Enable cJSON so version. ( on by default )
If you are packaging cJSON for a distribution of Linux, you would probably take these steps for example:
```
mkdir build
cd build
cmake .. -DENABLE_CJSON_UTILS=On -DENABLE_CJSON_TEST=Off -DCMAKE_INSTALL_PREFIX=/usr
make
make DESTDIR=$pkgdir install
```
On Windows CMake is usually used to create a Visual Studio solution file by running it inside the Developer Command Prompt for Visual Studio, for exact steps follow the official documentation from CMake and Microsoft and use the online search engine of your choice. The descriptions of the the options above still generally apply, although not all of them work on Windows.
#### Makefile
**NOTE:** This Method is deprecated. Use CMake if at all possible. Makefile support is limited to fixing bugs.
If you don't have CMake available, but still have GNU make. You can use the makefile to build cJSON:
Run this command in the directory with the source code and it will automatically compile static and shared libraries and a little test program (not the full test suite).
```
make all
```
If you want, you can install the compiled library to your system using `make install`. By default it will install the headers in `/usr/local/include/cjson` and the libraries in `/usr/local/lib`. But you can change this behavior by setting the `PREFIX` and `DESTDIR` variables: `make PREFIX=/usr DESTDIR=temp install`. And uninstall them with: `make PREFIX=/usr DESTDIR=temp uninstall`.
#### Vcpkg
You can download and install cJSON using the [vcpkg](https://github.com/Microsoft/vcpkg) dependency manager:
```
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
vcpkg install cjson
```
The cJSON port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
### Including cJSON
If you installed it via CMake or the Makefile, you can include cJSON like this:
```c
#i
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JSON(JavaScript Object Notation)是一种轻量级的数据交换格式。它是基于 JavaScript 的一种字符串格式,独立于编程语言,可以用来存储和传输数据。JSON 数据可以是简单的数字、字符串、数组或其他复杂数据类型。它通常用于 Web 应用程序中,用于存储和传输数据,也可以用于其他应用程序中。 JSON 格式由一系列特定的字符组成,这些字符称为“键”和“值”。键通常是字符串,值可以是字符串、数字、布尔值、数组或另一个 JSON 对象。在 JSON 中,数组和对象是通过花括号 [] 和 {} 包裹起来的,每个元素由逗号 , 分隔。
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cJSON-master.rar (215个子文件)
test3.bu 603B
testunity.c 121KB
cJSON.c 76KB
unity.c 48KB
cJSON_Utils.c 40KB
misc_tests.c 28KB
unity_fixture_Test.c 14KB
cjson_add.c 12KB
unity_fixture.c 10KB
compare_tests.c 8KB
parse_examples.c 8KB
old_utils_tests.c 8KB
test.c 8KB
readme_examples.c 7KB
json_patch_tests.c 7KB
testRunnerGeneratorWithMocks.c 6KB
parse_object.c 5KB
minify_tests.c 5KB
testRunnerGenerator.c 5KB
parse_array.c 5KB
parse_string.c 5KB
print_number.c 4KB
print_object.c 4KB
afl.c 4KB
parse_with_opts.c 4KB
parse_number.c 4KB
print_array.c 4KB
testparameterized.c 3KB
parse_hex4.c 3KB
misc_utils_tests.c 3KB
parse_value.c 3KB
print_value.c 3KB
print_string.c 3KB
unity_fixture_TestRunner.c 3KB
TestProductionCode.c 2KB
TestProductionCode.c 2KB
TestProductionCode.c 2KB
TestProductionCode_Runner.c 2KB
testsample_mock_run1.c 2KB
testsample_mock_new1.c 2KB
testsample_mock_yaml.c 2KB
testsample_mock_run2.c 2KB
testsample_mock_new2.c 2KB
cjson_read_fuzzer.c 2KB
testsample_mock_cmd.c 2KB
testsample_mock_param.c 2KB
testsample_yaml.c 2KB
testsample_run1.c 1KB
testsample_new1.c 1KB
testsample_mock_def.c 1KB
testsample_mock_head1.c 1KB
testsample_run2.c 1KB
testsample_new2.c 1KB
testsample_cmd.c 1KB
testsample_param.c 1KB
testRunnerGeneratorSmall.c 1KB
testsample_def.c 1KB
testsample_head1.c 1KB
unity_output_Spy.c 1KB
TestProductionCode2_Runner.c 1KB
fuzz_main.c 992B
ProductionCode.c 862B
ProductionCode.c 847B
ProductionCode.c 847B
template_fixture_tests.c 722B
TestProductionCode_Runner.c 700B
TestProductionCode2.c 664B
AllTests.c 653B
TestProductionCode2.c 567B
TestProductionCode2.c 565B
UnityHelper.c 405B
ProductionCode2.c 335B
ProductionCode2.c 331B
ProductionCode2.c 331B
TestProductionCode2_Runner.c 271B
all_tests.c 221B
unity_setup.c 121B
uninstall.cmake 728B
json.dict 914B
test4.expected 3KB
test5.expected 900B
test3.expected 505B
test1.expected 474B
test7.expected 347B
test2.expected 268B
test8.expected 228B
test11.expected 147B
test10.expected 78B
test9.expected 34B
unity_internals.h 68KB
unity.h 65KB
cJSON.h 16KB
unity_config.h 12KB
common.h 4KB
cJSON_Utils.h 4KB
unity_fixture.h 3KB
unity_fixture_malloc_overrides.h 2KB
unity_fixture_internals.h 1KB
unity_output_Spy.h 628B
UnityHelper.h 483B
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