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269 lines
8.2 KiB
269 lines
8.2 KiB
/******************************************************************************
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*
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* Copyright 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains utility functions.
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*
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******************************************************************************/
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#include <cstdint>
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#include "bt_target.h" // Must be first to define build configuration
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#include "bta/include/utl.h"
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#include "stack/include/btm_api.h"
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/*******************************************************************************
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*
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* Function utl_str2int
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*
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* Description This utility function converts a character string to an
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* integer. Acceptable values in string are 0-9. If invalid
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* string or string value too large, -1 is returned. Leading
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* spaces are skipped.
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*
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*
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* Returns Integer value or -1 on error.
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*
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******************************************************************************/
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int16_t utl_str2int(const char* p_s) {
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int32_t val = 0;
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for (; *p_s == ' ' && *p_s != 0; p_s++)
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;
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if (*p_s == 0) return -1;
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for (;;) {
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if ((*p_s < '0') || (*p_s > '9')) return -1;
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val += (int32_t)(*p_s++ - '0');
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if (val > 32767) return -1;
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if (*p_s == 0) {
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return (int16_t)val;
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} else {
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val *= 10;
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}
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}
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}
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/*******************************************************************************
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*
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* Function utl_strucmp
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*
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* Description This utility function compares two strings in uppercase.
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* String p_s must be uppercase. String p_t is converted to
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* uppercase if lowercase. If p_s ends first, the substring
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* match is counted as a match.
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*
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*
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* Returns 0 if strings match, nonzero otherwise.
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*
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******************************************************************************/
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int utl_strucmp(const char* p_s, const char* p_t) {
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char c;
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while (*p_s && *p_t) {
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c = *p_t++;
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if (c >= 'a' && c <= 'z') {
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c -= 0x20;
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}
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if (*p_s++ != c) {
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return -1;
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}
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}
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/* if p_t hit null first, no match */
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if (*p_t == 0 && *p_s != 0) {
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return 1;
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}
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/* else p_s hit null first, count as match */
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else {
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return 0;
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}
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}
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/*******************************************************************************
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*
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* Function utl_itoa
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*
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* Description This utility function converts a uint16_t to a string. The
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* string is NULL-terminated. The length of the string is
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* returned;
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*
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*
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* Returns Length of string.
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*
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******************************************************************************/
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uint8_t utl_itoa(uint16_t i, char* p_s) {
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uint16_t j, k;
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char* p = p_s;
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bool fill = false;
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if (i == 0) {
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/* take care of zero case */
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*p++ = '0';
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} else {
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for (j = 10000; j > 0; j /= 10) {
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k = i / j;
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i %= j;
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if (k > 0 || fill) {
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*p++ = k + '0';
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fill = true;
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}
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}
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}
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*p = 0;
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return (uint8_t)(p - p_s);
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}
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/*******************************************************************************
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*
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* Function utl_set_device_class
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*
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* Description This function updates the local Device Class.
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*
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* Parameters:
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* p_cod - Pointer to the device class to set to
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*
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* cmd - the fields of the device class to update.
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* BTA_UTL_SET_COD_MAJOR_MINOR, - overwrite major,
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* minor class
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* BTA_UTL_SET_COD_SERVICE_CLASS - set the bits in
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* the input
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* BTA_UTL_CLR_COD_SERVICE_CLASS - clear the bits in
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* the input
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* BTA_UTL_SET_COD_ALL - overwrite major, minor, set
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* the bits in service class
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* BTA_UTL_INIT_COD - overwrite major, minor, and
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* service class
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*
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* Returns true if successful, Otherwise false
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*
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******************************************************************************/
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bool utl_set_device_class(tBTA_UTL_COD* p_cod, uint8_t cmd) {
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uint8_t* dev;
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uint16_t service;
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uint8_t minor, major;
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DEV_CLASS dev_class;
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dev = BTM_ReadDeviceClass();
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BTM_COD_SERVICE_CLASS(service, dev);
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BTM_COD_MINOR_CLASS(minor, dev);
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BTM_COD_MAJOR_CLASS(major, dev);
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switch (cmd) {
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case BTA_UTL_SET_COD_MAJOR_MINOR:
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minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK;
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major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK;
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break;
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case BTA_UTL_SET_COD_SERVICE_CLASS:
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/* clear out the bits that is not SERVICE_CLASS bits */
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p_cod->service &= BTM_COD_SERVICE_CLASS_MASK;
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service = service | p_cod->service;
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break;
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case BTA_UTL_CLR_COD_SERVICE_CLASS:
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p_cod->service &= BTM_COD_SERVICE_CLASS_MASK;
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service = service & (~p_cod->service);
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break;
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case BTA_UTL_SET_COD_ALL:
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minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK;
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major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK;
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p_cod->service &= BTM_COD_SERVICE_CLASS_MASK;
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service = service | p_cod->service;
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break;
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case BTA_UTL_INIT_COD:
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minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK;
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major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK;
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service = p_cod->service & BTM_COD_SERVICE_CLASS_MASK;
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break;
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default:
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return false;
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}
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/* convert the fields into the device class type */
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FIELDS_TO_COD(dev_class, minor, major, service);
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if (BTM_SetDeviceClass(dev_class) == BTM_SUCCESS) return true;
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return false;
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}
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/*******************************************************************************
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*
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* Function utl_isintstr
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*
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* Description This utility function checks if the given string is an
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* integer string or not
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*
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*
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* Returns true if successful, Otherwise false
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*
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******************************************************************************/
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bool utl_isintstr(const char* p_s) {
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uint16_t i = 0;
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for (i = 0; p_s[i] != 0; i++) {
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if (((p_s[i] < '0') || (p_s[i] > '9')) && (p_s[i] != ';')) return false;
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}
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return true;
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}
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/*******************************************************************************
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*
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* Function utl_isdialchar
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*
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* Description This utility function checks if the given character
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* is an acceptable dial digit
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*
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* Returns true if successful, Otherwise false
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*
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******************************************************************************/
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bool utl_isdialchar(const char d) {
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return (((d >= '0') && (d <= '9')) || (d == '*') || (d == '+') ||
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(d == '#') || (d == ';') || (d == ',') ||
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((d >= 'A') && (d <= 'C')) ||
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((d == 'p') || (d == 'P') || (d == 'w') || (d == 'W')));
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}
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/*******************************************************************************
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*
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* Function utl_isdialstr
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*
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* Description This utility function checks if the given string contains
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* only dial digits or not
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*
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*
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* Returns true if successful, Otherwise false
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*
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******************************************************************************/
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bool utl_isdialstr(const char* p_s) {
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for (uint16_t i = 0; p_s[i] != 0; i++) {
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// include chars not in spec that work sent by some headsets.
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if (!(utl_isdialchar(p_s[i]) || (p_s[i] == '-'))) return false;
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}
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return true;
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}
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