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esp-idf/components/bt/bluedroid/bta/sys/utl.c

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/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains utility functions.
*
******************************************************************************/
#include <stddef.h>
#include "utl.h"
#include "gki.h"
#include "btm_api.h"
/*******************************************************************************
**
** Function utl_str2int
**
** Description This utility function converts a character string to an
** integer. Acceptable values in string are 0-9. If invalid
** string or string value too large, -1 is returned. Leading
** spaces are skipped.
**
**
** Returns Integer value or -1 on error.
**
*******************************************************************************/
INT16 utl_str2int(const char *p_s)
{
INT32 val = 0;
for (; *p_s == ' ' && *p_s != 0; p_s++);
if (*p_s == 0) {
return -1;
}
for (;;) {
if ((*p_s < '0') || (*p_s > '9')) {
return -1;
}
val += (INT32) (*p_s++ - '0');
if (val > 32767) {
return -1;
}
if (*p_s == 0) {
return (INT16) val;
} else {
val *= 10;
}
}
}
/*******************************************************************************
**
** Function utl_strucmp
**
** Description This utility function compares two strings in uppercase.
** String p_s must be uppercase. String p_t is converted to
** uppercase if lowercase. If p_s ends first, the substring
** match is counted as a match.
**
**
** Returns 0 if strings match, nonzero otherwise.
**
*******************************************************************************/
int utl_strucmp(const char *p_s, const char *p_t)
{
char c;
while (*p_s && *p_t) {
c = *p_t++;
if (c >= 'a' && c <= 'z') {
c -= 0x20;
}
if (*p_s++ != c) {
return -1;
}
}
/* if p_t hit null first, no match */
if (*p_t == 0 && *p_s != 0) {
return 1;
}
/* else p_s hit null first, count as match */
else {
return 0;
}
}
/*******************************************************************************
**
** Function utl_itoa
**
** Description This utility function converts a UINT16 to a string. The
** string is NULL-terminated. The length of the string is
** returned;
**
**
** Returns Length of string.
**
*******************************************************************************/
UINT8 utl_itoa(UINT16 i, char *p_s)
{
UINT16 j, k;
char *p = p_s;
BOOLEAN fill = FALSE;
if (i == 0) {
/* take care of zero case */
*p++ = '0';
} else {
for (j = 10000; j > 0; j /= 10) {
k = i / j;
i %= j;
if (k > 0 || fill) {
*p++ = k + '0';
fill = TRUE;
}
}
}
*p = 0;
return (UINT8) (p - p_s);
}
/*******************************************************************************
**
** Function utl_freebuf
**
** Description This function calls GKI_freebuf to free the buffer passed
** in, if buffer pointer is not NULL, and also initializes
** buffer pointer to NULL.
**
**
** Returns Nothing.
**
*******************************************************************************/
void utl_freebuf(void **p)
{
if (*p != NULL) {
GKI_freebuf(*p);
*p = NULL;
}
}
/*******************************************************************************
**
** Function utl_set_device_class
**
** Description This function updates the local Device Class.
**
** Parameters:
** p_cod - Pointer to the device class to set to
**
** cmd - the fields of the device class to update.
** BTA_UTL_SET_COD_MAJOR_MINOR, - overwrite major, minor class
** BTA_UTL_SET_COD_SERVICE_CLASS - set the bits in the input
** BTA_UTL_CLR_COD_SERVICE_CLASS - clear the bits in the input
** BTA_UTL_SET_COD_ALL - overwrite major, minor, set the bits in service class
** BTA_UTL_INIT_COD - overwrite major, minor, and service class
**
** Returns TRUE if successful, Otherwise FALSE
**
*******************************************************************************/
BOOLEAN utl_set_device_class(tBTA_UTL_COD *p_cod, UINT8 cmd)
{
UINT8 *dev;
UINT16 service;
UINT8 minor, major;
DEV_CLASS dev_class;
dev = BTM_ReadDeviceClass();
BTM_COD_SERVICE_CLASS( service, dev );
BTM_COD_MINOR_CLASS(minor, dev );
BTM_COD_MAJOR_CLASS(major, dev );
switch (cmd) {
case BTA_UTL_SET_COD_MAJOR_MINOR:
minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK;
major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK;
break;
case BTA_UTL_SET_COD_SERVICE_CLASS:
/* clear out the bits that is not SERVICE_CLASS bits */
p_cod->service &= BTM_COD_SERVICE_CLASS_MASK;
service = service | p_cod->service;
break;
case BTA_UTL_CLR_COD_SERVICE_CLASS:
p_cod->service &= BTM_COD_SERVICE_CLASS_MASK;
service = service & (~p_cod->service);
break;
case BTA_UTL_SET_COD_ALL:
minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK;
major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK;
p_cod->service &= BTM_COD_SERVICE_CLASS_MASK;
service = service | p_cod->service;
break;
case BTA_UTL_INIT_COD:
minor = p_cod->minor & BTM_COD_MINOR_CLASS_MASK;
major = p_cod->major & BTM_COD_MAJOR_CLASS_MASK;
service = p_cod->service & BTM_COD_SERVICE_CLASS_MASK;
break;
default:
return FALSE;
}
/* convert the fields into the device class type */
FIELDS_TO_COD(dev_class, minor, major, service);
if (BTM_SetDeviceClass(dev_class) == BTM_SUCCESS) {
return TRUE;
}
return FALSE;
}
/*******************************************************************************
**
** Function utl_isintstr
**
** Description This utility function checks if the given string is an
** integer string or not
**
**
** Returns TRUE if successful, Otherwise FALSE
**
*******************************************************************************/
BOOLEAN utl_isintstr(const char *p_s)
{
UINT16 i = 0;
for (i = 0; p_s[i] != 0; i++) {
if (((p_s[i] < '0') || (p_s[i] > '9')) && (p_s[i] != ';')) {
return FALSE;
}
}
return TRUE;
}
/*******************************************************************************
**
** Function utl_isdialstr
**
** Description This utility function checks if the given string contains
** only dial digits or not
**
**
** Returns TRUE if successful, Otherwise FALSE
**
*******************************************************************************/
BOOLEAN utl_isdialstr(const char *p_s)
{
UINT16 i = 0;
for (i = 0; p_s[i] != 0; i++) {
if (!(((p_s[i] >= '0') && (p_s[i] <= '9'))
|| (p_s[i] == '*') || (p_s[i] == '+') || (p_s[i] == '#') || (p_s[i] == ';')
|| ((p_s[i] >= 'A') && (p_s[i] <= 'C'))
|| ((p_s[i] == 'p') || (p_s[i] == 'P')
|| (p_s[i] == 'w') || (p_s[i] == 'W')))) {
return FALSE;
}
}
return TRUE;
}
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