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

---
 euler/source/io/fclose.cpp | 10 +++++++++
 euler/source/io/fopen.cpp  | 54 ++++++++++++++++++++++++++++++++++++++++++++++
 euler/source/io/fread.cpp  |  9 ++++++++
 3 files changed, 73 insertions(+)
 create mode 100644 euler/source/io/fclose.cpp
 create mode 100644 euler/source/io/fopen.cpp
 create mode 100644 euler/source/io/fread.cpp

(limited to 'euler/source/io')

diff --git a/euler/source/io/fclose.cpp b/euler/source/io/fclose.cpp
new file mode 100644
index 0000000..6f43f85
--- /dev/null
+++ b/euler/source/io/fclose.cpp
@@ -0,0 +1,10 @@
+#include <cstdio>
+
+namespace std {
+
+  int fclose(FILE *stream) {
+    delete stream;
+    return 0;
+  }
+
+}
diff --git a/euler/source/io/fopen.cpp b/euler/source/io/fopen.cpp
new file mode 100644
index 0000000..8d47bf0
--- /dev/null
+++ b/euler/source/io/fopen.cpp
@@ -0,0 +1,54 @@
+#include <stdint.h>
+#include <cstring>
+#include <cstdio>
+
+namespace std {
+
+  FILE *fopen(const char *filename, const char *mode) {
+
+    bool read = false;
+    bool write = false;
+    bool append = false;
+    bool extended = false;
+    bool create = false;
+
+    for (const char *p = mode; *p; ++p)
+      switch (*p) {
+      case 'r':
+        read = true;
+        continue;
+      case 'w':
+        write = true;
+        continue;
+      case 'a':
+        append = true;
+        continue;
+      case '+':
+        extended = true;
+        continue;
+      case 'x':
+        create = true;
+        continue;
+      default:
+        continue;
+      }
+
+    __euler_stream_handle handle;
+    __euler_stream_result res = __euler_open_file(
+      filename, strlen(filename), handle, write || append, create);
+
+    if (res != __EULER_SR_SUCCESS)
+      return 0;
+
+    euler::file_stream *f = new euler::file_stream(handle, read || extended,
+      write || extended, write && !append, append);
+
+    if (f->good)
+      return f;
+
+    delete f;
+    return 0;
+
+  }
+
+}
diff --git a/euler/source/io/fread.cpp b/euler/source/io/fread.cpp
new file mode 100644
index 0000000..e2d05b6
--- /dev/null
+++ b/euler/source/io/fread.cpp
@@ -0,0 +1,9 @@
+#include <cstdio>
+
+namespace std {
+
+  size_t fread(void *buffer, size_t size, size_t count, FILE *stream) {
+    return stream->try_read(buffer, size * count) ? count : 0;
+  }
+
+}
-- 
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