From 8cace3f05003c6cb4d38c36890055f03151c2ad4 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Fri, 16 Oct 2026 02:39:56 +0800
Subject: Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
---
 lib/libc/include/stdio.h | 102 -----------------------------------------------
 1 file changed, 102 deletions(-)
 delete mode 100644 lib/libc/include/stdio.h

(limited to 'lib/libc/include/stdio.h')

diff --git a/lib/libc/include/stdio.h b/lib/libc/include/stdio.h
deleted file mode 100644
index ae5a84b..0000000
--- a/lib/libc/include/stdio.h
+++ /dev/null
@@ -1,102 +0,0 @@
-// Copyright 2020 The Fuchsia Authors
-//
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/MIT
-
-#ifndef ZIRCON_KERNEL_LIB_LIBC_INCLUDE_STDIO_H_
-#define ZIRCON_KERNEL_LIB_LIBC_INCLUDE_STDIO_H_
-
-#include <stdarg.h>
-#include <stddef.h>
-#include <zircon/compiler.h>
-
-// All anybody really wants from stdio is printf.
-
-#ifdef __cplusplus
-#include <ktl/string_view.h>
-
-class FILE {
- public:
-  // This is basically equivalent to having a virtual Write function with
-  // subclasses providing their own data members in lieu of ptr.  But it's
-  // simpler and avoids a vtable that might need address fixup at load time
-  // (and the double indirection for a single-entry vtable--at the cost of
-  // double indirection for the ptr data in a callback that uses it).
-
-  using Callback = int(void*, ktl::string_view);
-
-  FILE() = default;
-
-  constexpr FILE(Callback* write, void* ptr) : write_(write), ptr_(ptr) {}
-
-  template <typename T>
-  explicit FILE(T* writer)
-      : write_([](void* ptr, ktl::string_view s) { return static_cast<T*>(ptr)->Write(s); }),
-        ptr_(writer) {}
-
-  // This is what fprintf calls to do output.
-  int Write(ktl::string_view s) { return write_(ptr_, s); }
-
-  constexpr explicit operator bool() const { return write_; }
-
-  constexpr bool operator==(const FILE& other) const {
-    return write_ == other.write_ && ptr_ == other.ptr_;
-  }
-
-  constexpr bool operator!=(const FILE& other) const { return !(*this == other); }
-
-  // This is not defined by libc itself.  The kernel defines it to point at
-  // the default console output mechanism.
-  static FILE stdout_;
-
- private:
-  Callback* write_ = nullptr;
-  void* ptr_ = nullptr;
-};
-
-#define stdout (&FILE::stdout_)
-
-inline int fputc(int c, FILE* f) {
-  const unsigned char uc = static_cast<unsigned char>(c);
-  return f->Write({reinterpret_cast<const char*>(&uc), 1}) == 1 ? uc : -1;
-}
-
-inline int putc(int c, FILE* f) { return fputc(c, f); }
-
-inline int putchar(int c) { return fputc(c, stdout); }
-
-inline int fputs(const char* s, FILE* f) {
-  ktl::string_view str(s);
-  return f->Write(str) == static_cast<int>(str.size()) ? 0 : -1;
-}
-
-inline int puts(const char* s) { return fputs(s, stdout) == 0 ? putchar('\n') : -1; }
-
-#else  // !__cplusplus
-
-// C users just need the function declarations.
-typedef struct _FILE_is_opaque FILE;
-
-#endif  // __cplusplus
-
-__BEGIN_CDECLS
-
-int printf(const char*, ...) __PRINTFLIKE(1, 2);
-int fprintf(FILE*, const char*, ...) __PRINTFLIKE(2, 3);
-int snprintf(char* buf, size_t len, const char*, ...) __PRINTFLIKE(3, 4);
-
-int vprintf(const char*, va_list);
-int vfprintf(FILE*, const char*, va_list);
-int vsnprintf(char* buf, size_t len, const char*, va_list);
-
-__END_CDECLS
-
-#if DISABLE_DEBUG_OUTPUT
-// The declarations stand so these can be used without parens to get
-// the real functions (e.g. &printf or (printf)(...)).
-#define printf(...)
-#define vprintf(fmt, args)
-#endif
-
-#endif  // ZIRCON_KERNEL_LIB_LIBC_INCLUDE_STDIO_H_
-- 
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