lint_hhmi.c File Reference

Purpose

The hhmi linter ensures that the given data is meaningful time as hours and minutes, in HHMI format.

Functional Description

gs1_lint_hhmi()

GS1_SYNTAX_DICTIONARY_API gs1_lint_err_t gs1_lint_hhmi	(	const char *const	data,
		size_t *const	err_pos,
		size_t *const	err_len
	)

Used to ensure that an AI component conforms to HHMI format.

Parameters

[in]	data	Pointer to the null-terminated data to be linted. Must not be NULL.
[out]	err_pos	To facilitate error highlighting, the start position of the bad data is written to this pointer, if not NULL.
[out]	err_len	The length of the bad data is written to this pointer, if not NULL.

Returns

GS1_LINTER_OK if okay.

GS1_LINTER_HOUR_WITH_MINUTE_TOO_SHORT if the data is too short for HHMI format.

GS1_LINTER_HOUR_WITH_MINUTE_TOO_LONG if the data is too long for HHMI format.

GS1_LINTER_NON_DIGIT_CHARACTER if the data contains a non-digit character.

GS1_LINTER_ILLEGAL_HOUR if the data contains an invalid hour.

GS1_LINTER_ILLEGAL_MINUTE if the data contains an invalid minute.

{
 
        size_t len;
        gs1_lint_err_t ret;
        char buf[3] = { 0 };
 
        assert(data);
 
        len = strlen(data);
 
        /*
         * Data must be four characters.
         *
         */
        if (len != 4)
                GS1_LINTER_RETURN_ERROR(
                        len < 4 ? GS1_LINTER_HOUR_WITH_MINUTE_TOO_SHORT : GS1_LINTER_HOUR_WITH_MINUTE_TOO_LONG,
                        0,
                        len
                );
 
        memcpy(buf, data, 2);
        ret = gs1_lint_hh(buf, err_pos, err_len);
 
        assert(ret == GS1_LINTER_OK ||
               ret == GS1_LINTER_NON_DIGIT_CHARACTER ||
               ret == GS1_LINTER_ILLEGAL_HOUR);
 
        if (ret != GS1_LINTER_OK)
                GS1_LINTER_RETURN_ERROR(ret, *err_pos, *err_len);
 
        memcpy(buf, data+2, 2);
        ret = gs1_lint_mi(buf, err_pos, err_len);
 
        assert(ret == GS1_LINTER_OK ||
               ret == GS1_LINTER_NON_DIGIT_CHARACTER ||
               ret == GS1_LINTER_ILLEGAL_MINUTE);
 
        if (ret != GS1_LINTER_OK)
                GS1_LINTER_RETURN_ERROR(ret, *err_pos + 2, *err_len);
 
        GS1_LINTER_RETURN_OK;
 
}