mirror of https://github.com/ARMmbed/mbed-os.git
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
/****************************************************************************
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* Copyright (c) 2019, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* 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, WITHOUT
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* 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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#include <stdio.h>
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#include <string.h>
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#include <cstdarg>
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#include "greentea-client/test_env.h"
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#include "platform/mbed_retarget.h"
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#define STRING_STACK_LIMIT 120
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static int utest_vprintf(const char *format, std::va_list arg)
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{
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// ARMCC microlib does not properly handle a size of 0.
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// As a workaround supply a dummy buffer with a size of 1.
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char dummy_buf[1];
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int len = vsnprintf(dummy_buf, sizeof(dummy_buf), format, arg);
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if (len < STRING_STACK_LIMIT) {
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char temp[STRING_STACK_LIMIT];
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vsprintf(temp, format, arg);
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greentea_write_string(temp);
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} else {
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char *temp = new char[len + 1];
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vsprintf(temp, format, arg);
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greentea_write_string(temp);
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delete[] temp;
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}
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return len;
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}
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extern "C" int utest_printf(const char *format, ...)
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{
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std::va_list args;
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va_start(args, format);
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int len = utest_vprintf(format, args);
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va_end(args);
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return len;
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}
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