lint_zero.c File Reference

Purpose

The zero linter ensures that the given data has a zero value.

Functional Description

gs1_lint_zero()

GS1_SYNTAX_DICTIONARY_API gs1_lint_err_t gs1_lint_zero	(	const char *const	data,
		size_t *const	err_pos,
		size_t *const	err_len
	)

Used to validate that an AI component has a zero value.

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_NOT_ZERO if the data does not contain a zero value.

{
 
        size_t len;
 
        assert(data);
 
        len = strlen(data);
 
        if (*data == '\0') {
                if (err_pos) *err_pos = 0;
                if (err_len) *err_len = 0;
                return GS1_LINTER_NOT_ZERO;
        }
 
        /*
         * Data must not contain a non-zero character
         *
         */
        if (strspn(data, "0") != len) {
                if (err_pos) *err_pos = 0;
                if (err_len) *err_len = len;
                return GS1_LINTER_NOT_ZERO;
        }
 
        return GS1_LINTER_OK;
 
}