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/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation, nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#define LOG_NDEBUG 0
#define LOG_TAG "LocSvc_misc_utils"
#include <stdio.h>
#include <string.h>
#include <dlfcn.h>
#include <log_util.h>
#include <loc_misc_utils.h>
#include <ctype.h>
int loc_util_split_string(char *raw_string, char **split_strings_ptr,
int max_num_substrings, char delimiter)
{
int raw_string_index=0;
int num_split_strings=0;
unsigned char end_string=0;
int raw_string_length=0;
if(!raw_string || !split_strings_ptr) {
LOC_LOGE("%s:%d]: NULL parameters", __func__, __LINE__);
num_split_strings = -1;
goto err;
}
LOC_LOGD("%s:%d]: raw string: %s\n", __func__, __LINE__, raw_string);
raw_string_length = strlen(raw_string) + 1;
split_strings_ptr[num_split_strings] = &raw_string[raw_string_index];
for(raw_string_index=0; raw_string_index < raw_string_length; raw_string_index++) {
if(raw_string[raw_string_index] == '\0')
end_string=1;
if((raw_string[raw_string_index] == delimiter) || end_string) {
raw_string[raw_string_index] = '\0';
LOC_LOGD("%s:%d]: split string: %s\n",
__func__, __LINE__, split_strings_ptr[num_split_strings]);
num_split_strings++;
if(((raw_string_index + 1) < raw_string_length) &&
(num_split_strings < max_num_substrings)) {
split_strings_ptr[num_split_strings] = &raw_string[raw_string_index+1];
}
else {
break;
}
}
if(end_string)
break;
}
err:
LOC_LOGD("%s:%d]: num_split_strings: %d\n", __func__, __LINE__, num_split_strings);
return num_split_strings;
}
void loc_util_trim_space(char *org_string)
{
char *scan_ptr, *write_ptr;
char *first_nonspace = NULL, *last_nonspace = NULL;
if(org_string == NULL) {
LOC_LOGE("%s:%d]: NULL parameter", __func__, __LINE__);
goto err;
}
scan_ptr = write_ptr = org_string;
while (*scan_ptr) {
//Find the first non-space character
if ( !isspace(*scan_ptr) && first_nonspace == NULL) {
first_nonspace = scan_ptr;
}
//Once the first non-space character is found in the
//above check, keep shifting the characters to the left
//to replace the spaces
if (first_nonspace != NULL) {
*(write_ptr++) = *scan_ptr;
//Keep track of which was the last non-space character
//encountered
//last_nonspace will not be updated in the case where
//the string ends with spaces
if ( !isspace(*scan_ptr)) {
last_nonspace = write_ptr;
}
}
scan_ptr++;
}
//Add NULL terminator after the last non-space character
if (last_nonspace) { *last_nonspace = '\0'; }
err:
return;
}
inline void logDlError(const char* failedCall) {
const char * err = dlerror();
LOC_LOGe("%s error: %s", failedCall, (nullptr == err) ? "unknown" : err);
}
void* dlGetSymFromLib(void*& libHandle, const char* libName, const char* symName)
{
void* sym = nullptr;
if ((nullptr != libHandle || nullptr != libName) && nullptr != symName) {
if (nullptr == libHandle) {
libHandle = dlopen(libName, RTLD_NOW);
if (nullptr == libHandle) {
logDlError("dlopen");
}
}
// NOT else, as libHandle gets assigned 5 line above
if (nullptr != libHandle) {
sym = dlsym(libHandle, symName);
if (nullptr == sym) {
logDlError("dlsym");
}
}
} else {
LOC_LOGe("Either libHandle (%p) or libName (%p) must not be null; "
"symName (%p) can not be null.", libHandle, libName, symName);
}
return sym;
}
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