GS1 Barcode Syntax Tests reference
A reference to the AI component "linter" routines referred to by the GS1 Barcode Syntax Dictionary. Copyright (c) 2022-2024 GS1 AISBL.
lint_csetnumeric.c File Reference

Purpose

The csetnumeric linter ensures that the given data contains only digits.

Functional Description

◆ gs1_lint_csetnumeric()

GS1_SYNTAX_DICTIONARY_API gs1_lint_err_t gs1_lint_csetnumeric ( const char *const  data,
size_t  data_len,
size_t *const  err_pos,
size_t *const  err_len 
)

Used to validate that an AI component conforms to N..99 syntax.

Note: The length of the component is validated by the framework that calls this function.

Parameters
[in]dataPointer to the data to be linted. Must not be NULL.
[in]data_lenLength of the data to be linted.
[out]err_posTo facilitate error highlighting, the start position of the bad data is written to this pointer, if not NULL.
[out]err_lenThe length of the bad data is written to this pointer, if not NULL.
Returns
GS1_LINTER_OK if okay.
GS1_LINTER_NON_DIGIT_CHARACTER if the data contains a non-digit character.
53{
54
55 size_t pos;
56
57 assert(data);
58
59
60 /*
61 * Validate digits using direct range checking
62 */
63 for (pos = 0; pos < data_len; pos++) {
64 if (GS1_LINTER_UNLIKELY(data[pos] < '0' || data[pos] > '9'))
67 pos,
68 1
69 );
70 }
71
73
74}
#define GS1_LINTER_UNLIKELY(x)
Implementation may provide hint to the compiler that the expression is likely to be false.
Definition gs1syntaxdictionary-utils.h:76
#define GS1_LINTER_RETURN_ERROR(error, position, length)
Return from a linter indicating that a problem was detected with the given data.
Definition gs1syntaxdictionary-utils.h:103
#define GS1_LINTER_RETURN_OK
Return from a linter indicating that no problem was detected with the given data.
Definition gs1syntaxdictionary-utils.h:88
@ GS1_LINTER_NON_DIGIT_CHARACTER
A non-digit character was found where a digit is expected.
Definition gs1syntaxdictionary.h:78