1 //===-- Implementation of fputs -------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/stdio/fputs.h" 10 #include "src/__support/CPP/string_view.h" 11 #include "src/__support/File/file.h" 12 13 #include "hdr/types/FILE.h" 14 #include "src/__support/macros/config.h" 15 #include "src/errno/libc_errno.h" 16 #include <stddef.h> 17 18 namespace LIBC_NAMESPACE_DECL { 19 20 LLVM_LIBC_FUNCTION(int, fputs, 21 (const char *__restrict str, ::FILE *__restrict stream)) { 22 cpp::string_view str_view(str); 23 24 auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->write( 25 str, str_view.size()); 26 if (result.has_error()) 27 libc_errno = result.error; 28 size_t written = result.value; 29 30 if (str_view.size() != written) { 31 // The stream should be in an error state in this case. 32 return EOF; 33 } 34 return 0; 35 } 36 37 } // namespace LIBC_NAMESPACE_DECL 38