[llvm-commits] [llvm] r139725 - in /llvm/trunk: include/llvm/Support/PathV2.h lib/Support/PathV2.cpp
Douglas Gregor
dgregor at apple.com
Wed Sep 14 13:27:01 PDT 2011
Author: dgregor
Date: Wed Sep 14 15:27:01 2011
New Revision: 139725
URL: http://llvm.org/viewvc/llvm-project?rev=139725&view=rev
Log:
Add a simple routine to determine the typical system directory for
temporary data.
Modified:
llvm/trunk/include/llvm/Support/PathV2.h
llvm/trunk/lib/Support/PathV2.cpp
Modified: llvm/trunk/include/llvm/Support/PathV2.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/PathV2.h?rev=139725&r1=139724&r2=139725&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/PathV2.h (original)
+++ llvm/trunk/include/llvm/Support/PathV2.h Wed Sep 14 15:27:01 2011
@@ -187,7 +187,7 @@
/// @result The root directory of \a path if it has one, otherwise
/// "".
const StringRef root_directory(StringRef path);
-
+
/// @brief Get root path.
///
/// Equivalent to root_name + root_directory.
@@ -264,6 +264,14 @@
/// @result true if \a value is a path separator character on the host OS
bool is_separator(char value);
+/// @brief Get the typical temporary directory for the system, e.g.,
+/// "/var/tmp" or "C:/TEMP"
+///
+/// @param erasedOnReboot Whether to favor a path that is erased on reboot
+/// rather than one that potentially persists longer.
+/// @param Result Holds the resulting path name.
+void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result);
+
/// @brief Has root name?
///
/// root_name != ""
Modified: llvm/trunk/lib/Support/PathV2.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/PathV2.cpp?rev=139725&r1=139724&r2=139725&view=diff
==============================================================================
--- llvm/trunk/lib/Support/PathV2.cpp (original)
+++ llvm/trunk/lib/Support/PathV2.cpp Wed Sep 14 15:27:01 2011
@@ -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);
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