From 6d0bf9181121b4c117c80d05a7f097363c531774 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Sun, 7 Jun 2009 00:56:23 +0000
Subject: Add Windows CE implementations of some ANSI C functions that are
 missing.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 1553
---
 wince/Makefile.am |  8 ++++++
 wince/env.c       | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 wince/env.h       | 13 ++++++++++
 wince/errno.c     | 20 +++++++++++++++
 wince/errno.h     | 15 +++++++++++
 wince/fileops.c   | 49 +++++++++++++++++++++++++++++++++++
 wince/fileops.h   | 14 ++++++++++
 7 files changed, 196 insertions(+)
 create mode 100644 wince/Makefile.am
 create mode 100644 wince/env.c
 create mode 100644 wince/env.h
 create mode 100644 wince/errno.c
 create mode 100644 wince/errno.h
 create mode 100644 wince/fileops.c
 create mode 100644 wince/fileops.h

diff --git a/wince/Makefile.am b/wince/Makefile.am
new file mode 100644
index 00000000..f6c87759
--- /dev/null
+++ b/wince/Makefile.am
@@ -0,0 +1,8 @@
+
+noinst_LIBRARIES=libc_wince.a
+
+libc_wince_a_SOURCES =                            \
+        env.c            env.h                    \
+	errno.c          errno.h                  \
+        fileops.c        fileops.h
+
diff --git a/wince/env.c b/wince/env.c
new file mode 100644
index 00000000..ceba6402
--- /dev/null
+++ b/wince/env.c
@@ -0,0 +1,77 @@
+//
+// "Extension" implementation of getenv for Windows CE.
+//
+// I (Simon Howard) release this file to the public domain.
+//
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <windows.h>
+#include <lmcons.h>
+#include <shlobj.h>
+
+#include "env.h"
+
+static int buffers_loaded = 0;
+static char username_buf[UNLEN + 1];
+static char temp_buf[MAX_PATH + 1];
+static char home_buf[MAX_PATH + 1];
+
+static void WCharToChar(wchar_t *src, char *dest, int buf_len)
+{
+    unsigned int len;
+
+    len = wcslen(src);
+
+    WideCharToMultiByte(CP_OEMCP, 0, src, len, dest, buf_len, NULL, NULL);
+}
+
+static void LoadBuffers(void)
+{
+    wchar_t temp[MAX_PATH];
+    DWORD buf_len;
+
+    // Username:
+
+    buf_len = UNLEN;
+    GetUserNameW(temp, &buf_len);
+    WCharToChar(temp, temp_buf, MAX_PATH);
+
+    // Temp dir:
+
+    GetTempPathW(MAX_PATH, temp);
+    WCharToChar(temp, temp_buf, MAX_PATH);
+
+    // Use My Documents dir as home:
+
+    SHGetSpecialFolderPath(NULL, temp, CSIDL_PERSONAL, 0);
+    WCharToChar(temp, home_buf, MAX_PATH);
+}
+
+char *getenv(const char *name)
+{
+    if (!buffers_loaded)
+    {
+        LoadBuffers();
+        buffers_loaded = 1;
+    }
+
+    if (!strcmp(name, "USER") || !strcmp(name, "USERNAME"))
+    {
+        return username_buf;
+    }
+    else if (!strcmp(name, "TEMP"))
+    {
+        return temp_buf;
+    }
+    else if (!strcmp(name, "HOME"))
+    {
+        return home_buf;
+    }
+    else
+    {
+        return NULL;
+    }
+}
+
diff --git a/wince/env.h b/wince/env.h
new file mode 100644
index 00000000..c2cb4243
--- /dev/null
+++ b/wince/env.h
@@ -0,0 +1,13 @@
+//
+// "Extension" implementation of getenv for Windows CE.
+//
+// I (Simon Howard) release this file to the public domain.
+//
+
+#ifndef WINCE_ENV_H
+#define WINCE_ENV_H
+
+extern char *getenv(const char *name);
+
+#endif /* #ifndef WINCE_ENV_H */
+
diff --git a/wince/errno.c b/wince/errno.c
new file mode 100644
index 00000000..28cd0899
--- /dev/null
+++ b/wince/errno.c
@@ -0,0 +1,20 @@
+//
+// "Extension" implementation of errno.h for Windows CE.
+//
+// I (Simon Howard) release this file to the public domain.
+//
+
+#include <windows.h>
+
+#include "errno.h"
+
+// This should really be a thread-local variable.  Oh well.
+
+static int my_errno;
+
+int *_GetErrno()
+{
+    my_errno = GetLastError();
+    return &my_errno;
+}
+
diff --git a/wince/errno.h b/wince/errno.h
new file mode 100644
index 00000000..e9b4721a
--- /dev/null
+++ b/wince/errno.h
@@ -0,0 +1,15 @@
+//
+// "Extension" implementation of errno.h for Windows CE.
+//
+// I (Simon Howard) release this file to the public domain.
+//
+
+#ifndef WINCE_ERRNO_H
+#define WINCE_ERRNO_H
+
+extern int *_GetErrno();
+
+#define errno (*_GetErrno())
+
+#endif /* #ifndef WINCE_ERROR_H */
+
diff --git a/wince/fileops.c b/wince/fileops.c
new file mode 100644
index 00000000..b0617bd3
--- /dev/null
+++ b/wince/fileops.c
@@ -0,0 +1,49 @@
+//
+// "Extension" implementation of ANSI C file functions for Windows CE.
+//
+// I (Simon Howard) release this file to the public domain.
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <windows.h>
+
+#include "fileops.h"
+
+int remove(const char *pathname)
+{
+    wchar_t temp[MAX_PATH + 1];
+
+    MultiByteToWideChar(CP_OEMCP,
+                        0,
+                        pathname,
+                        strlen(pathname) + 1,
+                        temp,
+                        MAX_PATH);
+
+    return DeleteFileW(temp) != 0;
+}
+
+int rename(const char *oldpath, const char *newpath)
+{
+    wchar_t oldpath1[MAX_PATH + 1];
+    wchar_t newpath1[MAX_PATH + 1];
+
+    MultiByteToWideChar(CP_OEMCP,
+                        0,
+                        oldpath,
+                        strlen(oldpath) + 1,
+                        oldpath1,
+                        MAX_PATH);
+    MultiByteToWideChar(CP_OEMCP,
+                        0,
+                        newpath,
+                        strlen(newpath) + 1,
+                        newpath1,
+                        MAX_PATH);
+
+    return MoveFileW(oldpath1, newpath1);
+}
+
diff --git a/wince/fileops.h b/wince/fileops.h
new file mode 100644
index 00000000..757a34fd
--- /dev/null
+++ b/wince/fileops.h
@@ -0,0 +1,14 @@
+//
+// "Extension" implementation of ANSI C file functions for Windows CE.
+//
+// I (Simon Howard) release this file to the public domain.
+//
+
+#ifndef WINCE_FILEOPS_H
+#define WINCE_FILEOPS_H
+
+int remove(const char *pathname);
+int rename(const char *oldpath, const char *newpath);
+
+#endif /* #ifndef WINCE_FILEOPS_H */
+
-- 
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