136991d83SMichael Jones //===-- Implementation of fscanf --------------------------------*- C++ -*-===// 236991d83SMichael Jones // 336991d83SMichael Jones // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 436991d83SMichael Jones // See https://llvm.org/LICENSE.txt for license information. 536991d83SMichael Jones // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 636991d83SMichael Jones // 736991d83SMichael Jones //===----------------------------------------------------------------------===// 836991d83SMichael Jones 936991d83SMichael Jones #include "src/stdio/fscanf.h" 1036991d83SMichael Jones 1136991d83SMichael Jones #include "src/__support/File/file.h" 1236991d83SMichael Jones #include "src/__support/arg_list.h" 13*5ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 1436991d83SMichael Jones #include "src/stdio/scanf_core/vfscanf_internal.h" 1536991d83SMichael Jones 165aed6d67SMichael Jones #include "hdr/types/FILE.h" 1736991d83SMichael Jones #include <stdarg.h> 1836991d83SMichael Jones 19*5ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 2036991d83SMichael Jones 2136991d83SMichael Jones LLVM_LIBC_FUNCTION(int, fscanf, 2236991d83SMichael Jones (::FILE *__restrict stream, const char *__restrict format, 2336991d83SMichael Jones ...)) { 2436991d83SMichael Jones va_list vlist; 2536991d83SMichael Jones va_start(vlist, format); 2636991d83SMichael Jones internal::ArgList args(vlist); // This holder class allows for easier copying 2736991d83SMichael Jones // and pointer semantics, as well as handling 2836991d83SMichael Jones // destruction automatically. 2936991d83SMichael Jones va_end(vlist); 3036991d83SMichael Jones int ret_val = scanf_core::vfscanf_internal(stream, format, args); 3136991d83SMichael Jones // This is done to avoid including stdio.h in the internals. On most systems 3236991d83SMichael Jones // EOF is -1, so this will be transformed into just "return ret_val". 3336991d83SMichael Jones return (ret_val == -1) ? EOF : ret_val; 3436991d83SMichael Jones } 3536991d83SMichael Jones 36*5ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 37