From b1a912a8a6ff472a49b2e0a09cfd433adfc2cb24 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Sat, 18 May 2024 21:53:38 -0400
Subject: reorganization, cross compiler

---
 libraries/euler/cstdio.cpp | 102 ---------------------------------------------
 1 file changed, 102 deletions(-)
 delete mode 100644 libraries/euler/cstdio.cpp

(limited to 'libraries/euler/cstdio.cpp')

diff --git a/libraries/euler/cstdio.cpp b/libraries/euler/cstdio.cpp
deleted file mode 100644
index 367e7e0..0000000
--- a/libraries/euler/cstdio.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-#include <euler/syscall.hpp>
-#include <cassert>
-#include <cstring>
-#include <cstdio>
-
-namespace euler {
-
-  //read-only with no error bits for now
-  struct file_t {
-
-    syscall::file_handle handle;
-
-    //TODO: variable size buffer? maybe a multiple of block size for device?
-    char buffer[1024];
-    //in bytes, aligned to buffer size; 1 for no buffer loaded
-    uint64_t buffer_start;
-
-    bool is_offset_in_buffer() {
-      return
-        buffer_start != 1 && offset >= buffer_start &&
-        offset < buffer_start + 1024;
-    }
-
-    syscall::file_result ensure_offset_in_buffer() {
-      if (is_offset_in_buffer())
-        return syscall::file_result::success;
-      uint64_t new_buffer_start = (offset / 1024) * 1024;
-      uint64_t new_buffer_end = new_buffer_start + 1024;
-      if (length < new_buffer_end)
-        new_buffer_end = length;
-      syscall::file_result result = _syscall_read_from_file(
-        handle, new_buffer_start, new_buffer_end - new_buffer_start, buffer);
-      if (result == syscall::file_result::success)
-        buffer_start = new_buffer_start;
-      return result;
-    }
-
-    uint64_t offset;
-    uint64_t length;
-
-  };
-
-}
-
-namespace std {
-
-  FILE *fopen(const char *path, const char *mode) {
-
-    assert(mode[0] == 'r' && mode[1] == '\0');
-
-    euler::syscall::file_handle handle;
-    euler::syscall::file_result result =
-      _syscall_open_file(path, strlen(path), handle);
-    if (result != euler::syscall::file_result::success)
-      return 0;
-
-    uint64_t length;
-    result = _syscall_get_file_length(handle, length);
-    if (result != euler::syscall::file_result::success) {
-      _syscall_close_file(handle);
-      return 0;
-    }
-
-    return new FILE {
-      .handle = handle,
-      .buffer = {},
-      .buffer_start = 1,
-      .offset = 0,
-      .length = length
-    };
-
-  }
-
-  int fclose(FILE *file) {
-    _syscall_close_file(file->handle);
-    delete file;
-    return 0;
-  }
-
-  int fgetc(FILE *from) {
-    if (from->offset >= from->length)
-      return EOF;
-    assert(
-      from->ensure_offset_in_buffer() == euler::syscall::file_result::success);
-    char ch = from->buffer[from->offset - from->buffer_start];
-    ++from->offset;
-    return ch;
-  }
-
-  int ungetc(int ch, FILE *from) {
-    if (ch == EOF || from->offset == 0)
-      return EOF;
-    --from->offset;
-    if (!from->is_offset_in_buffer()) {
-      ++from->offset;
-      return EOF;
-    }
-    from->buffer[from->offset - from->buffer_start] = ch;
-    return ch;
-  }
-
-}
-- 
cgit v1.2.3