4479ac15c9
This patch makes adjustments to header file includes in lldbUtility based on recommendations by the iwyu tool (include-what-you-use). The goal here is to make sure that all files include the exact set of headers which are needed for that file only, to eliminate cases of dead includes (e.g. someone deleted some code but forgot to delete the header includes that that code necessitated), and to eliminate the case where header includes are picked up transitively. llvm-svn: 299676
57 lines
1.6 KiB
C++
57 lines
1.6 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" // for SmallVectorImpl
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#include "llvm/ADT/StringRef.h" // for StringRef
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#include <assert.h> // for assert
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#include <stdarg.h> // for va_end, va_list, va_copy
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#include <stdio.h> // for vsnprintf, size_t
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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
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// to the 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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