59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
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#ifndef LWMQTT_HELPERS_H
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#define LWMQTT_HELPERS_H
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#include <stdbool.h>
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#include <lwmqtt.h>
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/**
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* Reads a string object from the buffer and populates the passed object.
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*
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* @param str - The object into which the data is to be read.
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* @param pptr - Pointer to the output buffer - incremented by the number of bytes used & returned.
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* @param end_ptr - Pointer to the end of the data: do not read beyond.
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* @return One if successful, zero if not.
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*/
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bool lwmqtt_read_string(lwmqtt_string_t *str, unsigned char **pptr, unsigned char *end_ptr);
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/**
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* Writes a string to an output buffer.
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*
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* @param pptr - Pointer to the output buffer - incremented by the number of bytes used & returned.
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* @param The string to write.
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*/
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void lwmqtt_write_string(unsigned char **pptr, lwmqtt_string_t string);
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/**
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* Calculates an integer from two bytes read from the input buffer.
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*
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* @param pptr - Pointer to the input buffer - incremented by the number of bytes used & returned.
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* @return The integer value calculated.
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*/
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int lwmqtt_read_int(unsigned char **pptr);
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/**
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* Reads one character from the input buffer.
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*
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* @param pptr - Pointer to the input buffer - incremented by the number of bytes used & returned.
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* @return The character read.
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*/
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unsigned char lwmqtt_read_char(unsigned char **pptr);
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/**
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* Writes one character to an output buffer.
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*
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* @param pptr - Pointer to the output buffer - incremented by the number of bytes used & returned.
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* @param The character to write
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*/
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void lwmqtt_write_char(unsigned char **pptr, unsigned char chr);
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/**
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* Writes an integer as 2 bytes to an output buffer.
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*
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* @param pptr - Pointer to the output buffer - incremented by the number of bytes used & returned.
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* @param The integer to write.
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*/
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void lwmqtt_write_int(unsigned char **pptr, int num);
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#endif
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