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Code Issues Releases Wiki Activity

refine core, move specified functions to kernel utility.

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This commit is contained in:
winlin 2014-06-08 13:03:03 +08:00
parent 7c7920698d
commit 31b568b013
30 changed files with 224 additions and 165 deletions
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125
trunk/src/core/srs_core.cpp
View file

@ -23,128 +23,3 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include <srs_core.hpp>
#include <string.h>
#include <netdb.h>
#include <arpa/inet.h>
using namespace std;
string srs_string_replace(string str, string old_str, string new_str)
{
std::string ret = str;
if (old_str == new_str) {
return ret;
}
size_t pos = 0;
while ((pos = ret.find(old_str, pos)) != std::string::npos) {
ret = ret.replace(pos, old_str.length(), new_str);
}
return ret;
}
string srs_string_trim_end(string str, string trim_chars)
{
std::string ret = str;
for (int i = 0; i < (int)trim_chars.length(); i++) {
char ch = trim_chars.at(i);
while (!ret.empty() && ret.at(ret.length() - 1) == ch) {
ret.erase(ret.end() - 1);
// ok, matched, should reset the search
i = 0;
}
}
return ret;
}
string srs_string_trim_start(string str, string trim_chars)
{
std::string ret = str;
for (int i = 0; i < (int)trim_chars.length(); i++) {
char ch = trim_chars.at(i);
while (!ret.empty() && ret.at(0) == ch) {
ret.erase(ret.begin());
// ok, matched, should reset the search
i = 0;
}
}
return ret;
}
string srs_string_remove(string str, string remove_chars)
{
std::string ret = str;
for (int i = 0; i < (int)remove_chars.length(); i++) {
char ch = remove_chars.at(i);
for (std::string::iterator it = ret.begin(); it != ret.end();) {
if (ch == *it) {
it = ret.erase(it);
// ok, matched, should reset the search
i = 0;
} else {
++it;
}
}
}
return ret;
}
bool srs_string_ends_with(string str, string flag)
{
return str.rfind(flag) == str.length() - flag.length();
}
string srs_dns_resolve(string host)
{
if (inet_addr(host.c_str()) != INADDR_NONE) {
return host;
}
hostent* answer = gethostbyname(host.c_str());
if (answer == NULL) {
return "";
}
char ipv4[16];
memset(ipv4, 0, sizeof(ipv4));
for (int i = 0; i < answer->h_length; i++) {
inet_ntop(AF_INET, answer->h_addr_list[i], ipv4, sizeof(ipv4));
break;
}
return ipv4;
}
bool srs_is_little_endian()
{
// convert to network(big-endian) order, if not equals,
// the system is little-endian, so need to convert the int64
static int little_endian_check = -1;
if(little_endian_check == -1) {
union {
int32_t i;
int8_t c;
} little_check_union;
little_check_union.i = 0x01;
little_endian_check = little_check_union.c;
}
return (little_endian_check == 1);
}

28
trunk/src/core/srs_core.hpp
View file

@ -85,30 +85,6 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// it's recomments to free each elem explicit.
// so we remove the srs_freepa utility.
// compare
#define srs_min(a, b) (((a) < (b))? (a) : (b))
#define srs_max(a, b) (((a) < (b))? (b) : (a))
// signal defines.
#define SIGNAL_RELOAD SIGHUP
#include <string>
// replace old_str to new_str of str
extern std::string srs_string_replace(std::string str, std::string old_str, std::string new_str);
// trim char in trim_chars of str
extern std::string srs_string_trim_end(std::string str, std::string trim_chars);
// trim char in trim_chars of str
extern std::string srs_string_trim_start(std::string str, std::string trim_chars);
// remove char in remove_chars of str
extern std::string srs_string_remove(std::string str, std::string remove_chars);
// whether string end with
extern bool srs_string_ends_with(std::string str, std::string flag);
// dns resolve utility, return the resolved ip address.
extern std::string srs_dns_resolve(std::string host);
// whether system is little endian
extern bool srs_is_little_endian();
/**
* disable copy constructor of class
*/
@ -120,8 +96,4 @@ extern bool srs_is_little_endian();
className(const className&); \
className& operator= (const className&)
// const time for st to convert to us
#define SRS_TIME_MILLISECONDS 1000
#define SRS_TIME_SECONDS 1000000
#endif