json65 | A JSON parser written in 6502 assembly language | JSON Processing library

json65 is a C library typically used in Utilities, JSON Processing applications. json65 has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

JSON65 is an event-driven (SAX-style) parser, so the parser is given a callback function, which it calls for each event. JSON65 supports incremental parsing, so you can freely feed it any sized chunks of input, and you don't need to have the whole file in memory at once. JSON65 is fully reentrant, so you can incrementally parse several files at once if you so desire. JSON65 does have a couple of limits: strings are limited to 255 bytes, and the nesting depth (of nested arrays or objects) is limited to 224. However, there is no limit on the length of a line, or the length of a file. JSON65 uses 512 bytes of memory for each parser, which must be allocated by the caller. JSON65 does not use dynamic memory allocation. In accordance with the JSON specification, JSON65 assumes its input is UTF-8 encoded. However JSON65 does not validate the UTF-8, so any encoding can be used, as long as all bytes with the high bit clear represent ASCII characters. Bytes with the high bit set are only allowed inside strings. The only place where JSON65 assumes UTF-8 is in the processing of \u escape sequences. In accordance with the JSON specification, a single \u escape can be used to specify code points in the Basic Multilingual Plane, and two consecutive \u escapes (a UTF-16 surrogate pair) can be used to specify a code point outside the Basic Multilingual Plane. These escapes will be translated into the proper UTF-8. Because JSON only allows newlines in places where arbitrary whitespace is allowed, JSON65 is agnostic to the type of line ending. (CR, LF, or CRLF.) For the purposes of counting line numbers for error reporting, JSON65 handles CR, LF, or CRLF line endings. JSON65 will parse numbers which fit into a 32-bit signed long, and will provide the long to the callback. All other numbers (i. e. floating point numbers, or integers which overflow a 32-bit long) are provided to the callback as a string. (Like strings, numbers cannot be more than 255 digits long.). The callback function may return an error if it wishes. This will cause parsing to stop immediately, and the error code returned by the callback will be returned by j65_parse(). Error codes are negative numbers, and the user may use the codes from J65_USER_ERROR to -1, inclusive, for their own error codes.