Add a simple routine to determine the typical system directory for
temporary data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139725 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp
index c2880ca..4d969fe 100644
--- a/lib/Support/PathV2.cpp
+++ b/lib/Support/PathV2.cpp
@@ -490,6 +490,36 @@
}
}
+void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result) {
+ result.clear();
+
+ // Check whether the temporary directory is specified by an environment
+ // variable.
+ const char *EnvironmentVariable;
+#ifdef LLVM_ON_WIN32
+ EnvironmentVariable = "TEMP";
+#else
+ EnvironmentVariable = "TMPDIR";
+#endif
+ if (char *RequestedDir = getenv(EnvironmentVariable)) {
+ result.append(RequestedDir, RequestedDir + strlen(RequestedDir));
+ return;
+ }
+
+ // Fall back to a system default.
+ const char *DefaultResult;
+#ifdef LLVM_ON_WIN32
+ (void)erasedOnReboot;
+ DefaultResult = "C:\TEMP";
+#else
+ if (erasedOnReboot)
+ DefaultResult = "/tmp";
+ else
+ DefaultResult = "/var/tmp";
+#endif
+ result.append(DefaultResult, DefaultResult + strlen(DefaultResult));
+}
+
bool has_root_name(const Twine &path) {
SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage);