================
@@ -0,0 +1,49 @@
+//===-- Implementation of fgets for baremetal -------------------*- C++
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/stdio/fgets.h"
+
+#include "hdr/stdio_macros.h" // for EOF.
+#include "hdr/types/FILE.h"
+#include "src/__support/common.h"
+#include "src/__support/libc_errno.h"
+#include "src/__support/macros/config.h"
+#include "src/stdio/baremetal/file_internal.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(char *, fgets,
+ (char *__restrict str, int count,
+ ::FILE *__restrict stream)) {
+ if (count < 1)
+ return nullptr;
+
+ char c = '\0';
+ // i is an int because it's frequently compared to count, which is also int.
+ int i = 0;
+
+ for (; i < (count - 1) && c != '\n'; ++i) {
+ auto result = read_internal(&c, 1, stream);
+ if (result.has_error())
+ libc_errno = result.error;
+
+ if (result.value != 1)
+ break;
----------------
PiJoules wrote:
Could there ever be a situation where `result.value != 1` even if
`read_internal(&c, 1, stream)` did not have an error? If not, them perhaps the
break could be in the `if (result.has_error()) {` block.
https://github.com/llvm/llvm-project/pull/168931
_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
