13a3b0bb4b
They are not portable (which meant we had a hand-rolled implementation for windows), and llvm::StringRef provides equivalent functionality.
73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
//===-- Windows.cpp -------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// This file provides Windows support functions
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#include "lldb/Host/PosixApi.h"
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#include "lldb/Host/windows/windows.h"
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#include "llvm/Support/ConvertUTF.h"
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#include <cassert>
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#include <cctype>
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#include <cerrno>
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#include <cstdarg>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <io.h>
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int vasprintf(char **ret, const char *fmt, va_list ap) {
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char *buf;
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int len;
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size_t buflen;
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va_list ap2;
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va_copy(ap2, ap);
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len = vsnprintf(NULL, 0, fmt, ap2);
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if (len >= 0 &&
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(buf = (char *)malloc((buflen = (size_t)(len + 1)))) != NULL) {
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len = vsnprintf(buf, buflen, fmt, ap);
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*ret = buf;
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} else {
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*ret = NULL;
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len = -1;
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}
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va_end(ap2);
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return len;
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}
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#ifdef _MSC_VER
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#if _MSC_VER < 1900
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namespace lldb_private {
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int vsnprintf(char *buffer, size_t count, const char *format, va_list argptr) {
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int old_errno = errno;
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int r = ::vsnprintf(buffer, count, format, argptr);
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int new_errno = errno;
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buffer[count - 1] = '\0';
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if (r == -1 || r == count) {
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FILE *nul = fopen("nul", "w");
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int bytes_written = ::vfprintf(nul, format, argptr);
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fclose(nul);
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if (bytes_written < count)
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errno = new_errno;
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else {
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errno = old_errno;
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r = bytes_written;
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}
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}
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return r;
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}
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} // namespace lldb_private
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#endif
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#endif // _MSC_VER
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