xref: /aosp_15_r20/external/llvm-libc/src/stdio/generic/fputs.cpp (revision 71db0c75aadcf003ffe3238005f61d7618a3fead)
1*71db0c75SAndroid Build Coastguard Worker //===-- Implementation of fputs -------------------------------------------===//
2*71db0c75SAndroid Build Coastguard Worker //
3*71db0c75SAndroid Build Coastguard Worker // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*71db0c75SAndroid Build Coastguard Worker // See https://llvm.org/LICENSE.txt for license information.
5*71db0c75SAndroid Build Coastguard Worker // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*71db0c75SAndroid Build Coastguard Worker //
7*71db0c75SAndroid Build Coastguard Worker //===----------------------------------------------------------------------===//
8*71db0c75SAndroid Build Coastguard Worker 
9*71db0c75SAndroid Build Coastguard Worker #include "src/stdio/fputs.h"
10*71db0c75SAndroid Build Coastguard Worker #include "src/__support/CPP/string_view.h"
11*71db0c75SAndroid Build Coastguard Worker #include "src/__support/File/file.h"
12*71db0c75SAndroid Build Coastguard Worker 
13*71db0c75SAndroid Build Coastguard Worker #include "hdr/types/FILE.h"
14*71db0c75SAndroid Build Coastguard Worker #include "src/__support/macros/config.h"
15*71db0c75SAndroid Build Coastguard Worker #include "src/errno/libc_errno.h"
16*71db0c75SAndroid Build Coastguard Worker #include <stddef.h>
17*71db0c75SAndroid Build Coastguard Worker 
18*71db0c75SAndroid Build Coastguard Worker namespace LIBC_NAMESPACE_DECL {
19*71db0c75SAndroid Build Coastguard Worker 
20*71db0c75SAndroid Build Coastguard Worker LLVM_LIBC_FUNCTION(int, fputs,
21*71db0c75SAndroid Build Coastguard Worker                    (const char *__restrict str, ::FILE *__restrict stream)) {
22*71db0c75SAndroid Build Coastguard Worker   cpp::string_view str_view(str);
23*71db0c75SAndroid Build Coastguard Worker 
24*71db0c75SAndroid Build Coastguard Worker   auto result = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->write(
25*71db0c75SAndroid Build Coastguard Worker       str, str_view.size());
26*71db0c75SAndroid Build Coastguard Worker   if (result.has_error())
27*71db0c75SAndroid Build Coastguard Worker     libc_errno = result.error;
28*71db0c75SAndroid Build Coastguard Worker   size_t written = result.value;
29*71db0c75SAndroid Build Coastguard Worker 
30*71db0c75SAndroid Build Coastguard Worker   if (str_view.size() != written) {
31*71db0c75SAndroid Build Coastguard Worker     // The stream should be in an error state in this case.
32*71db0c75SAndroid Build Coastguard Worker     return EOF;
33*71db0c75SAndroid Build Coastguard Worker   }
34*71db0c75SAndroid Build Coastguard Worker   return 0;
35*71db0c75SAndroid Build Coastguard Worker }
36*71db0c75SAndroid Build Coastguard Worker 
37*71db0c75SAndroid Build Coastguard Worker } // namespace LIBC_NAMESPACE_DECL
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