From a91a1c60f544d26195c2df9dd9cd1ef042deacf9 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Mon, 8 Jun 2009 18:15:57 +0000
Subject: Use SDL's getenv/putenv implementation, and populate at startup.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 1577
---
 pcsound/pcsound.c |  1 +
 setup/mainmenu.c  | 13 ++++++++++++
 src/i_main.c      |  9 +++++++++
 wince/env.c       | 60 ++++++++++++++++++++++++++-----------------------------
 wince/env.h       |  6 +++++-
 5 files changed, 56 insertions(+), 33 deletions(-)

diff --git a/pcsound/pcsound.c b/pcsound/pcsound.c
index 0746e24e..09ef2752 100644
--- a/pcsound/pcsound.c
+++ b/pcsound/pcsound.c
@@ -27,6 +27,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "SDL_getenv.h"
 #include "config.h"
 #include "pcsound.h"
 #include "pcsound_internal.h"
diff --git a/setup/mainmenu.c b/setup/mainmenu.c
index d340661b..6a1f01c2 100644
--- a/setup/mainmenu.c
+++ b/setup/mainmenu.c
@@ -22,6 +22,10 @@
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef _WIN32_WCE
+#include "libc_wince.h"
+#endif
+
 #include "config.h"
 #include "textscreen.h"
 
@@ -214,6 +218,15 @@ int main(int argc, char *argv[])
     myargc = argc;
     myargv = argv;
 
+#ifdef _WIN32_WCE
+
+    // Windows CE has no environment, but SDL provides an implementation.
+    // Populate the environment with the values we normally find.
+
+    PopulateEnvironment();
+
+#endif
+
     InitConfig();
     RunGUI();
 
diff --git a/src/i_main.c b/src/i_main.c
index e1de5881..03f8a5ac 100644
--- a/src/i_main.c
+++ b/src/i_main.c
@@ -133,6 +133,15 @@ int main(int argc, char **argv)
     myargc = argc;
     myargv = argv;
 
+#ifdef _WIN32_WCE
+
+    // Windows CE has no environment, but SDL provides an implementation.
+    // Populate the environment with the values we normally find.
+
+    PopulateEnvironment();
+
+#endif
+
     // Only schedule on a single core, if we have multiple
     // cores.  This is to work around a bug in SDL_mixer.
 
diff --git a/wince/env.c b/wince/env.c
index a678de2d..bedeb434 100644
--- a/wince/env.c
+++ b/wince/env.c
@@ -14,21 +14,33 @@
 
 #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);
+    len = wcslen(src) + 1;
 
     WideCharToMultiByte(CP_OEMCP, 0, src, len, dest, buf_len, NULL, NULL);
 }
 
-static void LoadBuffers(void)
+static void SetEnvironment(char *env_string, wchar_t *wvalue)
+{
+    char value[MAX_PATH + 10];
+    int env_len;
+
+    // Construct the string for putenv: NAME=value
+
+    env_len = strlen(env_string);
+    strcpy(value, env_string);
+
+    WCharToChar(wvalue, value + env_len, sizeof(value) - env_len);
+
+    // Set the environment variable:
+
+    putenv(value);
+}
+
+void PopulateEnvironment(void)
 {
     wchar_t temp[MAX_PATH];
     DWORD buf_len;
@@ -37,42 +49,26 @@ static void LoadBuffers(void)
 
     buf_len = UNLEN;
     GetUserNameExW(NameDisplay, temp, &buf_len);
-    WCharToChar(temp, temp_buf, MAX_PATH);
+    SetEnvironment("USER=", temp);
+    SetEnvironment("USERNAME=", temp);
 
     // Temp dir:
 
     GetTempPathW(MAX_PATH, temp);
-    WCharToChar(temp, temp_buf, MAX_PATH);
+    SetEnvironment("TEMP=", temp);
 
     // Use My Documents dir as home:
 
     SHGetSpecialFolderPath(NULL, temp, CSIDL_PERSONAL, 0);
-    WCharToChar(temp, home_buf, MAX_PATH);
-}
+    SetEnvironment("HOME=", temp);
 
-char *getenv(const char *name)
-{
-    if (!buffers_loaded)
     {
-        LoadBuffers();
-        buffers_loaded = 1;
-    }
+        char *home = getenv("HOME");
 
-    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;
+        MultiByteToWideChar(CP_ACP, 0,
+                            home, strlen(home) + 1,
+                            temp, sizeof(temp));
+        MessageBoxW(NULL, temp, L"Home", MB_OK);
     }
 }
 
diff --git a/wince/env.h b/wince/env.h
index c2cb4243..d91f3fab 100644
--- a/wince/env.h
+++ b/wince/env.h
@@ -7,7 +7,11 @@
 #ifndef WINCE_ENV_H
 #define WINCE_ENV_H
 
-extern char *getenv(const char *name);
+// SDL provides an implementation of getenv/putenv:
+
+#include "SDL_getenv.h"
+
+extern void PopulateEnvironment(void);
 
 #endif /* #ifndef WINCE_ENV_H */
 
-- 
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