| 1 | //===-- Implementation of sprintf -------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/stdio/sprintf.h" |
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| 10 | |
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| 11 | #include "src/__support/CPP/limits.h" |
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| 12 | #include "src/__support/arg_list.h" |
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| 13 | #include "src/__support/macros/config.h" |
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| 14 | #include "src/stdio/printf_core/printf_main.h" |
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| 15 | #include "src/stdio/printf_core/writer.h" |
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| 16 | |
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| 17 | #include <stdarg.h> |
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| 18 | |
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| 19 | namespace LIBC_NAMESPACE_DECL { |
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| 20 | |
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| 21 | LLVM_LIBC_FUNCTION(int, sprintf, |
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| 22 | (char *__restrict buffer, const char *__restrict format, |
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| 23 | ...)) { |
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| 24 | va_list vlist; |
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| 25 | va_start(vlist, format); |
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| 26 | internal::ArgList args(vlist); // This holder class allows for easier copying |
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| 27 | // and pointer semantics, as well as handling |
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| 28 | // destruction automatically. |
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| 29 | va_end(vlist); |
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| 30 | |
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| 31 | printf_core::WriteBuffer< |
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| 32 | printf_core::Mode<printf_core::WriteMode::RESIZE_AND_FILL_BUFF>::value> |
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| 33 | wb(buffer, cpp::numeric_limits<size_t>::max()); |
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| 34 | printf_core::Writer writer(wb); |
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| 35 | |
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| 36 | int ret_val = printf_core::printf_main(&writer, format, args); |
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| 37 | wb.buff[wb.buff_cur] = '\0'; |
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| 38 | return ret_val; |
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| 39 | } |
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| 40 | |
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| 41 | } // namespace LIBC_NAMESPACE_DECL |
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| 42 | |
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