acpi/acpica/utstrsuppt.c

4  * Module Name: utstrsuppt - Support functions for string-to-integer conversion
27  * PARAMETERS:  string                  - Null terminated input string
32  * DESCRIPTION: Performs a base 8 conversion of the input string to an
40 acpi_status acpi_ut_convert_octal_string(char *string, u64 *return_value_ptr)
45 	/* Convert each ASCII byte in the input string */
47 	while (*string) {
53 		if (!(ACPI_IS_OCTAL_DIGIT(*string))) {
62 		status = acpi_ut_insert_digit(&accumulated_value, 8, *string);
68 		string++;
81  * PARAMETERS:  string                  - Null terminated input string
86  * DESCRIPTION: Performs a base 10 conversion of the input string to an
94 acpi_status acpi_ut_convert_decimal_string(char *string, u64 *return_value_ptr)
99 	/* Convert each ASCII byte in the input string */
101 	while (*string) {
107 		if (!isdigit((int)*string)) {
116 		status = acpi_ut_insert_digit(&accumulated_value, 10, *string);
122 		string++;
135  * PARAMETERS:  string                  - Null terminated input string
140  * DESCRIPTION: Performs a base 16 conversion of the input string to an
148 acpi_status acpi_ut_convert_hex_string(char *string, u64 *return_value_ptr)
153 	/* Convert each ASCII byte in the input string */
155 	while (*string) {
161 		if (!isxdigit((int)*string)) {
170 		status = acpi_ut_insert_digit(&accumulated_value, 16, *string);
176 		string++;
189  * PARAMETERS:  string                  - Pointer to input ASCII string
192  *              used by the caller to detect end-of-string.
194  * DESCRIPTION: Remove any leading zeros in the input string. Return the
196  *              to check for the end of the string (NULL terminator).
200 char acpi_ut_remove_leading_zeros(char **string)
203 	while (**string == ACPI_ASCII_ZERO) {
204 		*string += 1;
207 	return (**string);
214  * PARAMETERS:  string                  - Pointer to input ASCII string
217  *              used by the caller to detect end-of-string.
219  * DESCRIPTION: Remove any leading whitespace in the input string. Return the
221  *              to check for the end of the string (NULL terminator).
225 char acpi_ut_remove_whitespace(char **string)
228 	while (isspace((u8)**string)) {
229 		*string += 1;
232 	return (**string);
239  * PARAMETERS:  string                  - Pointer to input ASCII string
241  * RETURN:      TRUE if a "0x" prefix was found at the start of the string
247 u8 acpi_ut_detect_hex_prefix(char **string)
249 	char *initial_position = *string;
251 	acpi_ut_remove_hex_prefix(string);
252 	if (*string != initial_position) {
256 	return (FALSE);		/* Not a hex string */
263  * PARAMETERS:  string                  - Pointer to input ASCII string
271 void acpi_ut_remove_hex_prefix(char **string)
273 	if ((**string == ACPI_ASCII_ZERO) &&
274 	    (tolower((int)*(*string + 1)) == 'x')) {
275 		*string += 2;	/* Go past the leading 0x */
283  * PARAMETERS:  string                  - Pointer to input ASCII string
286  *              string
292 u8 acpi_ut_detect_octal_prefix(char **string)
295 	if (**string == ACPI_ASCII_ZERO) {
296 		*string += 1;	/* Go past the leading 0 */
300 	return (FALSE);		/* Not an octal string */