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使用stringstream进行字符串拼接

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Signed-off-by: Hollokin <taoyuxin2@huawei.com>
This commit is contained in:
Hollokin 2023-06-21 15:31:06 +08:00
parent b16dfdd152
commit 4ea00980b9
1 changed files with 4 additions and 9 deletions
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13
test/unittest/cpp_test/src/permission_verification_exception_test.cpp
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@ -18,9 +18,9 @@
#undef private
#include <cstdint>
#include <cstring>
#include <gtest/gtest.h>
#include <regex>
#include <sstream>
#include <string>
#include <sys/time.h>
#include <unistd.h>
@ -41,7 +41,6 @@ namespace OHOS {
namespace MiscServices {
constexpr int32_t MAIN_USER_ID = 100;
constexpr const uint16_t EACH_LINE_LENGTH = 500;
constexpr const uint16_t TOTAL_LENGTH = 4096;
class TextListener : public OnTextChangedListener {
public:
TextListener() = default;
@ -194,22 +193,18 @@ void PermissionVerificationExceptionTest::TearDown(void)
bool PermissionVerificationExceptionTest::ExecuteCmd(const std::string &cmd, std::string &result)
{
char buff[EACH_LINE_LENGTH] = { 0x00 };
char output[TOTAL_LENGTH] = { 0x00 };
std::stringstream output;
FILE *ptr = popen(cmd.c_str(), "r");
if (ptr != nullptr) {
while (fgets(buff, sizeof(buff), ptr) != nullptr) {
if (strcat_s(output, sizeof(output), buff) != 0) {
pclose(ptr);
ptr = nullptr;
return false;
}
output << buff;
}
pclose(ptr);
ptr = nullptr;
} else {
return false;
}
result = std::string(output);
result = output.str();
return true;
}