98 lines
2.9 KiB
Markdown
98 lines
2.9 KiB
Markdown
Very low footprint JSON parser written in portable ANSI C.
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* BSD licensed with no dependencies (i.e. just drop the C file into your project)
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* Never recurses or allocates more memory than it needs
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* Very simple API with operator sugar for C++
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[](http://travis-ci.org/udp/json-parser)
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_Want to serialize? Check out [json-builder](https://github.com/udp/json-builder)!_
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Installing
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----------
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There is now a makefile which will produce a libjsonparser static and dynamic library. However, this
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is _not_ required to build json-parser, and the source files (`json.c` and `json.h`) should be happy
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in any build system you already have in place.
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API
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---
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json_value * json_parse (const json_char * json,
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size_t length);
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json_value * json_parse_ex (json_settings * settings,
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const json_char * json,
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size_t length,
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char * error);
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void json_value_free (json_value *);
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The `type` field of `json_value` is one of:
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* `json_object` (see `u.object.length`, `u.object.values[x].name`, `u.object.values[x].value`)
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* `json_array` (see `u.array.length`, `u.array.values`)
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* `json_integer` (see `u.integer`)
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* `json_double` (see `u.dbl`)
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* `json_string` (see `u.string.ptr`, `u.string.length`)
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* `json_boolean` (see `u.boolean`)
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* `json_null`
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Compile-Time Options
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--------------------
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-DJSON_TRACK_SOURCE
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Stores the source location (line and column number) inside each `json_value`.
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This is useful for application-level error reporting.
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Runtime Options
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---------------
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settings |= json_enable_comments;
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Enables C-style `// line` and `/* block */` comments.
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size_t value_extra
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The amount of space (if any) to allocate at the end of each `json_value`, in
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order to give the application space to add metadata.
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void * (* mem_alloc) (size_t, int zero, void * user_data);
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void (* mem_free) (void *, void * user_data);
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Custom allocator routines. If NULL, the default `malloc` and `free` will be used.
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The `user_data` pointer will be forwarded from `json_settings` to allow application
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context to be passed.
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Changes in version 1.1.0
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------------------------
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* UTF-8 byte order marks are now skipped if present
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* Allows cross-compilation by honoring --host if given (@wkz)
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* Maximum size for error buffer is now exposed in header (@LB--)
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* GCC warning for `static` after `const` fixed (@batrick)
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* Optional support for C-style line and block comments added (@Jin-W-FS)
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* `name_length` field added to object values
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* It is now possible to retrieve the source line/column number of a parsed `json_value` when `JSON_TRACK_SOURCE` is enabled
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* The application may now extend `json_value` using the `value_extra` setting
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* Un-ambiguate pow call in the case of C++ overloaded pow (@fcartegnie)
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* Fix null pointer de-reference when a non-existing array is closed and no root value is present
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