65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
#ifndef WEASELJSON_H
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#define WEASELJSON_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct WeaselJsonCallbacks {
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void (*on_begin_object)(void *data);
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void (*on_end_object)(void *data);
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void (*on_begin_string)(void *data);
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/** May be called multiple times per string if not all string data is
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* available yet. The string data provided is unescaped. */
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void (*on_string_data)(void *data, const char *buf, int len);
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void (*on_end_string)(void *data);
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void (*on_begin_array)(void *data);
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void (*on_end_array)(void *data);
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void (*on_begin_number)(void *data);
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/** May be called multiple times per number if not all number data is
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* available yet */
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void (*on_number_data)(void *data, const char *buf, int len);
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void (*on_end_number)(void *data);
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void (*on_true_literal)(void *data);
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void (*on_false_literal)(void *data);
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void (*on_null_literal)(void *data);
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};
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enum WeaselJsonStatus {
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/** Accept input */
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WeaselJson_OK,
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/** Consumed all available input. Call WeaselJsonParser_parse with more data
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to provide more input, or call with length 0 to indicate end of data */
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WeaselJson_AGAIN,
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/** Invalid json */
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WeaselJson_REJECT,
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/** json is too deeply nested */
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WeaselJson_OVERFLOW,
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};
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typedef struct WeaselJsonParser WeaselJsonParser;
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/** Create a parser. Increasing stack size increases memory usage but also
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* increases the depth of nested json accepted. `callbacks` and `data` must
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* outlive the returned parser. */
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WeaselJsonParser *WeaselJsonParser_create(int stackSize,
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const WeaselJsonCallbacks *callbacks,
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void *data);
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/** Restore the parser to its newly-created state */
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void WeaselJsonParser_reset(WeaselJsonParser *parser);
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/** Destroy the parser */
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void WeaselJsonParser_destroy(WeaselJsonParser *parser);
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/** Incrementally parse `len` more bytes starting at `buf`. `buf` may be
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* modified. Call with `len` 0 to indicate end of data */
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WeaselJsonStatus WeaselJsonParser_parse(WeaselJsonParser *parser, char *buf,
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int len);
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#ifdef __cplusplus
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}
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#endif
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#endif
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