From c13b2a2504393371e32a4fb4c01cfad8d7cc929e Mon Sep 17 00:00:00 2001
From: Ray Molenkamp <github@lazydodo.com>
Date: Wed, 5 Sep 2018 14:31:10 +1000
Subject: Fix T54152: --env-system-scripts fails on win32

---
 source/blender/blenlib/BLI_path_util.h    |  1 +
 source/blender/blenlib/intern/path_util.c | 23 ++++++++++++++++++++---
 source/blender/blenlib/intern/storage.c   |  2 +-
 3 files changed, 22 insertions(+), 4 deletions(-)

(limited to 'source/blender/blenlib')

diff --git a/source/blender/blenlib/BLI_path_util.h b/source/blender/blenlib/BLI_path_util.h
index b4329bf81ac..e434e83416b 100644
--- a/source/blender/blenlib/BLI_path_util.h
+++ b/source/blender/blenlib/BLI_path_util.h
@@ -41,6 +41,7 @@ struct ListBase;
 
 void BLI_setenv(const char *env, const char *val) ATTR_NONNULL(1);
 void BLI_setenv_if_new(const char *env, const char *val) ATTR_NONNULL(1);
+const char *BLI_getenv(const char *env) ATTR_NONNULL(1);
 
 void BLI_make_file_string(const char *relabase, char *string,  const char *dir, const char *file);
 void BLI_make_exist(char *dir);
diff --git a/source/blender/blenlib/intern/path_util.c b/source/blender/blenlib/intern/path_util.c
index 6272f2109d2..b28579febaf 100644
--- a/source/blender/blenlib/intern/path_util.c
+++ b/source/blender/blenlib/intern/path_util.c
@@ -1095,7 +1095,7 @@ bool BLI_path_program_extensions_add_win32(char *name, const size_t maxlen)
 	if ((type == 0) || S_ISDIR(type)) {
 		/* typically 3-5, ".EXE", ".BAT"... etc */
 		const int ext_max = 12;
-		const char *ext = getenv("PATHEXT");
+		const char *ext = BLI_getenv("PATHEXT");
 		if (ext) {
 			const int name_len = strlen(name);
 			char *filename = alloca(name_len + ext_max);
@@ -1152,7 +1152,7 @@ bool BLI_path_program_search(
 	const char separator = ':';
 #endif
 
-	path = getenv("PATH");
+	path = BLI_getenv("PATH");
 	if (path) {
 		char filename[FILE_MAX];
 		const char *temp;
@@ -1220,10 +1220,27 @@ void BLI_setenv(const char *env, const char *val)
  */
 void BLI_setenv_if_new(const char *env, const char *val)
 {
-	if (getenv(env) == NULL)
+	if (BLI_getenv(env) == NULL)
 		BLI_setenv(env, val);
 }
 
+/**
+* get an env var, result has to be used immediately
+*/
+const char* BLI_getenv(const char *env)
+{
+#ifdef _MSC_VER
+	static char buffer[32767]; /* 32767 is the total size of the environment block on windows*/
+	if (GetEnvironmentVariableA(env, buffer, sizeof(buffer)))
+		return buffer;
+	else
+		return NULL;
+#else
+	return getenv(env);
+#endif
+}
+
+
 /**
  * Strips off nonexistent (or non-accessible) subdirectories from the end of *dir, leaving the path of
  * the lowest-level directory that does exist and we can read.
diff --git a/source/blender/blenlib/intern/storage.c b/source/blender/blenlib/intern/storage.c
index f69b35ce5a9..cfcc2bc4390 100644
--- a/source/blender/blenlib/intern/storage.c
+++ b/source/blender/blenlib/intern/storage.c
@@ -85,7 +85,7 @@
  */
 char *BLI_current_working_dir(char *dir, const size_t maxncpy)
 {
-	const char *pwd = getenv("PWD");
+	const char *pwd = BLI_getenv("PWD");
 	if (pwd) {
 		size_t srclen = BLI_strnlen(pwd, maxncpy);
 		if (srclen != maxncpy) {
-- 
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