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672d2c1255
This patch removes the comments following the header includes. They were added after running IWYU over the LLDB codebase. However they add little value, are often outdates and burdensome to maintain. Differential revision: https://reviews.llvm.org/D54385 llvm-svn: 346625
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
//===-- VASPrintf.cpp -------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Utility/VASPrintf.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include <assert.h>
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#include <stdarg.h>
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#include <stdio.h>
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bool lldb_private::VASprintf(llvm::SmallVectorImpl<char> &buf, const char *fmt,
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va_list args) {
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llvm::SmallString<16> error("<Encoding error>");
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bool result = true;
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// Copy in case our first call to vsnprintf doesn't fit into our buffer
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va_list copy_args;
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va_copy(copy_args, args);
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buf.resize(buf.capacity());
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// Write up to `capacity` bytes, ignoring the current size.
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int length = ::vsnprintf(buf.data(), buf.size(), fmt, args);
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if (length < 0) {
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buf = error;
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result = false;
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goto finish;
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}
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if (size_t(length) >= buf.size()) {
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// The error formatted string didn't fit into our buffer, resize it to the
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// exact needed size, and retry
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buf.resize(length + 1);
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length = ::vsnprintf(buf.data(), buf.size(), fmt, copy_args);
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if (length < 0) {
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buf = error;
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result = false;
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goto finish;
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}
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assert(size_t(length) < buf.size());
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}
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buf.resize(length);
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finish:
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va_end(args);
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va_end(copy_args);
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return result;
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}
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