30 lines
950 B
C
30 lines
950 B
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3bar - an xcb-based status- and ws-bar for i3
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* © 2010-2012 Axel Wagner and contributors (see also: LICENSE)
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*
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* parse_json_header.c: Parse the JSON protocol header to determine
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* protocol version and features.
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*
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*/
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#ifndef PARSE_JSON_HEADER_H_
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#define PARSE_JSON_HEADER_H_
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#include <stdint.h>
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/*
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* Determines the JSON i3bar protocol version from the given buffer. In case
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* the buffer does not contain valid JSON, or no version field is found, this
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* function returns -1. The amount of bytes consumed by parsing the header is
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* returned in *consumed (if non-NULL).
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*
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* The return type is an int32_t to avoid machines with different sizes of
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* 'int' to allow different values here. It’s highly unlikely we ever exceed
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* even an int8_t, but still…
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*
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*/
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void parse_json_header(i3bar_child *child, const unsigned char *buffer, int length, unsigned int *consumed);
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#endif
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