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[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3
Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3 License: MIT
This commit is contained in:
Timo Kreuzer
parent
f1b60c66f0
commit
04e0dc4a7a
568 changed files with 115483 additions and 0 deletions
445
sdk/lib/ucrt/stdio/output.cpp
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445
sdk/lib/ucrt/stdio/output.cpp
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//
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// output.cpp
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// The standard _output functions, which perform formatted output to a stream.
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//
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#include <corecrt_internal_stdio_output.h>
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using namespace __crt_stdio_output;
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// Enclaves do not have a file system, but they do allow in-memory operations
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// from stdio.
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#ifndef _UCRT_ENCLAVE_BUILD
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template <template <typename, typename> class Base, typename Character>
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static int __cdecl common_vfprintf(
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unsigned __int64 const options,
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FILE* const stream,
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Character const* const format,
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__crt_cached_ptd_host& ptd,
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va_list const arglist
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) throw()
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{
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typedef output_processor<
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Character,
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stream_output_adapter<Character>,
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Base<Character, stream_output_adapter<Character>>
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> processor_type;
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_UCRT_VALIDATE_RETURN(ptd, stream != nullptr, EINVAL, -1);
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_UCRT_VALIDATE_RETURN(ptd, format != nullptr, EINVAL, -1);
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return __acrt_lock_stream_and_call(stream, [&]() -> int
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{
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__acrt_stdio_temporary_buffering_guard const buffering(stream, ptd);
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processor_type processor(
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stream_output_adapter<Character>(stream),
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options,
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format,
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ptd,
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arglist);
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return processor.process();
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});
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}
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extern "C" int __cdecl __stdio_common_vfprintf(
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unsigned __int64 const options,
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FILE* const stream,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vfprintf<standard_base>(options, stream, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vfwprintf(
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unsigned __int64 const options,
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FILE* const stream,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vfprintf<standard_base>(options, stream, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vfprintf_s(
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unsigned __int64 const options,
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FILE* const stream,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vfprintf<format_validation_base>(options, stream, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vfwprintf_s(
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unsigned __int64 const options,
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FILE* const stream,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vfprintf<format_validation_base>(options, stream, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vfprintf_p(
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unsigned __int64 const options,
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FILE* const stream,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vfprintf<positional_parameter_base>(options, stream, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vfwprintf_p(
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unsigned __int64 const options,
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FILE* const stream,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vfprintf<positional_parameter_base>(options, stream, format, ptd, arglist);
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}
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#endif /* _UCRT_ENCLAVE_BUILD */
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template <template <typename, typename> class Base, typename Character>
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_Success_(return >= 0)
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static int __cdecl common_vsprintf(
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unsigned __int64 const options,
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_Out_writes_z_(buffer_count) Character* const buffer,
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size_t const buffer_count,
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Character const* const format,
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__crt_cached_ptd_host& ptd,
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va_list const arglist
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) throw()
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{
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typedef __acrt_stdio_char_traits<Character> char_traits;
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typedef output_processor<
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Character,
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string_output_adapter<Character>,
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Base<Character, string_output_adapter<Character>>
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> processor_type;
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_UCRT_VALIDATE_RETURN(ptd, format != nullptr, EINVAL, -1);
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_UCRT_VALIDATE_RETURN(ptd, buffer_count == 0 || buffer != nullptr, EINVAL, -1);
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string_output_adapter_context<Character> context{};
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context._buffer = buffer;
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context._buffer_count = buffer_count;
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context._buffer_used = 0;
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// For the C Standard snprintf functions, we continue formatting even after
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// the buffer is full so that we can return the number of characters that
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// are required to complete the format operation. For all other sprintf
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// functions that have a buffer count, if no buffer was provided then we
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// do the same.
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context._continue_count =
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(options & _CRT_INTERNAL_PRINTF_STANDARD_SNPRINTF_BEHAVIOR) != 0 ||
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buffer == nullptr;
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processor_type processor(
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string_output_adapter<Character>(&context),
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options,
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format,
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ptd,
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arglist);
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int const result = processor.process();
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if (buffer == nullptr)
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{
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return result;
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}
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// Otherwise, we formatted data into the buffer and need to terminate it:
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if (options & _CRT_INTERNAL_PRINTF_LEGACY_VSPRINTF_NULL_TERMINATION)
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{
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if (buffer_count == 0 && result != 0)
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{
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return -1;
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}
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else if (context._buffer_used != buffer_count)
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{
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buffer[context._buffer_used] = '\0';
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}
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else if (result >= 0 && static_cast<size_t>(result) > buffer_count)
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{
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return -1;
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}
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}
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else if (options & _CRT_INTERNAL_PRINTF_STANDARD_SNPRINTF_BEHAVIOR)
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{
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if (buffer_count == 0)
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{
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// No-op
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}
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else if (result < 0)
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{
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buffer[0] = '\0';
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}
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else if (context._buffer_used == buffer_count)
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{
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buffer[buffer_count - 1] = '\0';
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}
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else
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{
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buffer[context._buffer_used] = '\0';
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}
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}
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else
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{
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if (buffer_count == 0)
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{
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return -1;
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}
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else if (context._buffer_used == buffer_count)
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{
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buffer[buffer_count - 1] = '\0';
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return -2;
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}
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else
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{
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buffer[context._buffer_used] = '\0';
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}
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}
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#pragma warning(suppress:__WARNING_POSTCONDITION_NULLTERMINATION_VIOLATION) // 26036 needs work
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return result;
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}
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extern "C" int __cdecl __stdio_common_vsprintf(
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unsigned __int64 const options,
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char* const buffer,
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size_t const buffer_count,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsprintf<standard_base>(options, buffer, buffer_count, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vswprintf(
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unsigned __int64 const options,
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wchar_t* const buffer,
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size_t const buffer_count,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsprintf<standard_base>(options, buffer, buffer_count, format, ptd, arglist);
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}
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template <typename Character>
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_Success_(return >= 0)
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static int __cdecl common_vsprintf_s(
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unsigned __int64 const options,
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_Out_writes_z_(buffer_count) Character* const buffer,
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size_t const buffer_count,
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Character const* const format,
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__crt_cached_ptd_host& ptd,
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va_list const arglist
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) throw()
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{
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_UCRT_VALIDATE_RETURN(ptd, format != nullptr, EINVAL, -1);
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_UCRT_VALIDATE_RETURN(ptd, buffer != nullptr && buffer_count > 0, EINVAL, -1);
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int const result = common_vsprintf<format_validation_base>(options, buffer, buffer_count, format, ptd, arglist);
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if (result < 0)
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{
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buffer[0] = 0;
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_SECURECRT__FILL_STRING(buffer, buffer_count, 1);
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}
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if (result == -2)
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{
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_UCRT_VALIDATE_RETURN(ptd, ("Buffer too small", 0), ERANGE, -1);
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}
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else if (result >= 0)
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{
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_SECURECRT__FILL_STRING(buffer, buffer_count, result + 1);
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}
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return result;
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}
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extern "C" int __cdecl __stdio_common_vsprintf_s(
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unsigned __int64 const options,
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char* const buffer,
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size_t const buffer_count,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsprintf_s(options, buffer, buffer_count, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vswprintf_s(
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unsigned __int64 const options,
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wchar_t* const buffer,
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size_t const buffer_count,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsprintf_s(options, buffer, buffer_count, format, ptd, arglist);
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}
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template <typename Character>
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_Success_(return >= 0)
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static int __cdecl common_vsnprintf_s(
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unsigned __int64 const options,
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_Out_writes_z_(buffer_count) Character* const buffer,
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size_t const buffer_count,
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size_t const max_count,
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Character const* const format,
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__crt_cached_ptd_host& ptd,
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va_list const arglist
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) throw()
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{
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_UCRT_VALIDATE_RETURN(ptd, format != nullptr, EINVAL, -1);
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if (max_count == 0 && buffer == nullptr && buffer_count == 0)
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return 0; // No work to do
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_UCRT_VALIDATE_RETURN(ptd, buffer != nullptr && buffer_count > 0, EINVAL, -1);
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int result = -1;
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{
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auto errno_restore_point = ptd.get_errno().create_guard();
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errno_restore_point.disable();
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if (buffer_count > max_count)
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{
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result = common_vsprintf<format_validation_base>(options, buffer, max_count + 1, format, ptd, arglist);
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if (result == -2)
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{
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// The string has been truncated; return -1:
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_SECURECRT__FILL_STRING(buffer, buffer_count, max_count + 1);
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if (ptd.get_errno().check(ERANGE))
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{
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errno_restore_point.enable();
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}
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return -1;
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}
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}
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else
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{
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result = common_vsprintf<format_validation_base>(options, buffer, buffer_count, format, ptd, arglist);
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buffer[buffer_count - 1] = 0;
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// We allow truncation if count == _TRUNCATE
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if (result == -2 && max_count == _TRUNCATE)
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{
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if (ptd.get_errno().check(ERANGE))
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{
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errno_restore_point.enable();
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}
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return -1;
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}
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}
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}
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if (result < 0)
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{
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buffer[0] = 0;
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_SECURECRT__FILL_STRING(buffer, buffer_count, 1);
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if (result == -2)
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{
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_UCRT_VALIDATE_RETURN(ptd, ("Buffer too small", 0), ERANGE, -1);
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}
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return -1;
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}
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_SECURECRT__FILL_STRING(buffer, buffer_count, result + 1);
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return result < 0 ? -1 : result;
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}
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extern "C" int __cdecl __stdio_common_vsnprintf_s(
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unsigned __int64 const options,
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char* const buffer,
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size_t const buffer_count,
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size_t const max_count,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsnprintf_s(options, buffer, buffer_count, max_count, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vsnwprintf_s(
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unsigned __int64 const options,
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wchar_t* const buffer,
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size_t const buffer_count,
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size_t const max_count,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsnprintf_s(options, buffer, buffer_count, max_count, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vsprintf_p(
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unsigned __int64 const options,
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char* const buffer,
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size_t const buffer_count,
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char const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsprintf<positional_parameter_base>(options, buffer, buffer_count, format, ptd, arglist);
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}
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extern "C" int __cdecl __stdio_common_vswprintf_p(
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unsigned __int64 const options,
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wchar_t* const buffer,
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size_t const buffer_count,
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wchar_t const* const format,
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_locale_t const locale,
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va_list const arglist
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)
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{
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__crt_cached_ptd_host ptd(locale);
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return common_vsprintf<positional_parameter_base>(options, buffer, buffer_count, format, ptd, arglist);
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}
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