libsheepy

C lib for handling text files, strings and json like data structure with an object oriented system
git clone https://spartatek.se/git/libsheepy.git
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laxjson.h (2807B)

      1 /*
      2  * Copyright (c) 2013 Andrew Kelley
      3  *
      4  * This file is part of liblaxjson, which is MIT licensed.
      5  * See http://opensource.org/licenses/MIT
      6  */
      7 
      8 #pragma once
      9 
     10 #ifdef __cplusplus
     11 extern "C"
     12 {
     13 #endif /* __cplusplus */
     14 
     15 enum LaxJsonType {
     16     LaxJsonTypeString,
     17     LaxJsonTypeProperty,
     18     LaxJsonTypeNumber,
     19     LaxJsonTypeObject,
     20     LaxJsonTypeArray,
     21     LaxJsonTypeTrue,
     22     LaxJsonTypeFalse,
     23     LaxJsonTypeNull
     24 };
     25 
     26 enum LaxJsonState {
     27     LaxJsonStateValue,
     28     LaxJsonStateObject,
     29     LaxJsonStateArray,
     30     LaxJsonStateString,
     31     LaxJsonStateStringEscape,
     32     LaxJsonStateUnicodeEscape,
     33     LaxJsonStateBareProp,
     34     LaxJsonStateCommentBegin,
     35     LaxJsonStateCommentLine,
     36     LaxJsonStateCommentMultiLine,
     37     LaxJsonStateCommentMultiLineStar,
     38     LaxJsonStateExpect,
     39     LaxJsonStateEnd,
     40     LaxJsonStateColon,
     41     LaxJsonStateNumber,
     42     LaxJsonStateNumberDecimal,
     43     LaxJsonStateNumberExponent,
     44     LaxJsonStateNumberExponentSign
     45 };
     46 
     47 enum LaxJsonError {
     48     LaxJsonErrorNone,
     49     LaxJsonErrorUnexpectedChar,
     50     LaxJsonErrorExpectedEof,
     51     LaxJsonErrorExceededMaxStack,
     52     LaxJsonErrorNoMem,
     53     LaxJsonErrorExceededMaxValueSize,
     54     LaxJsonErrorInvalidHexDigit,
     55     LaxJsonErrorInvalidUnicodePoint,
     56     LaxJsonErrorExpectedColon,
     57     LaxJsonErrorUnexpectedEof,
     58     LaxJsonErrorAborted
     59 };
     60 
     61 /* All callbacks must be provided. Return nonzero to abort the ongoing feed operation. */
     62 struct LaxJsonContext {
     63     void *userdata;
     64     /* type can be property or string */
     65     int (*string)(struct LaxJsonContext *, enum LaxJsonType type, const char *value, int length);
     66     /* type is always number */
     67     int (*number)(struct LaxJsonContext *, char* x);
     68     /* type can be true, false, or null */
     69     int (*primitive)(struct LaxJsonContext *, enum LaxJsonType type);
     70     /* type can be array or object */
     71     int (*begin)(struct LaxJsonContext *, enum LaxJsonType type);
     72     /* type can be array or object */
     73     int (*end)(struct LaxJsonContext *, enum LaxJsonType type);
     74 
     75     int line;
     76     int column;
     77 
     78     int max_state_stack_size;
     79     int max_value_buffer_size;
     80 
     81     /* private members */
     82     enum LaxJsonState state;
     83     enum LaxJsonState *state_stack;
     84     int state_stack_index;
     85     int state_stack_size;
     86 
     87     char *value_buffer;
     88     int value_buffer_index;
     89     int value_buffer_size;
     90 
     91     unsigned int unicode_point;
     92     unsigned int unicode_digit_index;
     93 
     94     char *expected;
     95     char delim;
     96     enum LaxJsonType string_type;
     97 };
     98 
     99 struct LaxJsonContext *lax_json_create(void);
    100 void lax_json_destroy(struct LaxJsonContext *context);
    101 
    102 enum LaxJsonError lax_json_feed(struct LaxJsonContext *context, int size, const char *data);
    103 enum LaxJsonError lax_json_eof(struct LaxJsonContext *context);
    104 
    105 const char *lax_json_str_err(enum LaxJsonError err);
    106 
    107 #ifdef __cplusplus
    108 }
    109 #endif /* __cplusplus */