From 4ad384d4647cf9ac9e7961cf28554c6434183f32 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 12 Mar 2007 13:50:28 -0400
Subject: [PATCH] ENH: Added kwsys SystemTools::CreateSymlink and
SystemTools::ReadSymlink.
---
SystemTools.cxx | 38 ++++++++++++++++++++++++++++++++++++++
SystemTools.hxx.in | 12 ++++++++++++
2 files changed, 50 insertions(+)
diff --git a/SystemTools.cxx b/SystemTools.cxx
index d5616d9..1359bc3 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -2356,6 +2356,44 @@ bool SystemTools::FileIsSymlink(const char* name)
#endif
}
+#if defined(_WIN32) && !defined(__CYGWIN__)
+bool SystemTools::CreateSymlink(const char*, const char*)
+{
+ return false;
+}
+#else
+bool SystemTools::CreateSymlink(const char* origName, const char* newName)
+{
+ return symlink(origName, newName) >= 0;
+}
+#endif
+
+#if defined(_WIN32) && !defined(__CYGWIN__)
+bool SystemTools::ReadSymlink(const char*, kwsys_stl::string&)
+{
+ return false;
+}
+#else
+bool SystemTools::ReadSymlink(const char* newName,
+ kwsys_stl::string& origName)
+{
+ char buf[KWSYS_SYSTEMTOOLS_MAXPATH+1];
+ int count =
+ static_cast<int>(readlink(newName, buf, KWSYS_SYSTEMTOOLS_MAXPATH));
+ if(count >= 0)
+ {
+ // Add null-terminator.
+ buf[count] = 0;
+ origName = buf;
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+}
+#endif
+
int SystemTools::ChangeDirectory(const char *dir)
{
return Chdir(dir);
diff --git a/SystemTools.hxx.in b/SystemTools.hxx.in
index 9c3ea0e..4539364 100644
--- a/SystemTools.hxx.in
+++ b/SystemTools.hxx.in
@@ -588,6 +588,18 @@ public:
unsigned long length = 256,
double percent_bin = 0.05);
+ /**
+ * Create a symbolic link if the platform supports it. Returns whether
+ * creation succeded.
+ */
+ static bool CreateSymlink(const char* origName, const char* newName);
+
+ /**
+ * Read the contents of a symbolic link. Returns whether reading
+ * succeded.
+ */
+ static bool ReadSymlink(const char* newName, kwsys_stl::string& origName);
+
/**
* Try to locate the file 'filename' in the directory 'dir'.
* If 'filename' is a fully qualified filename, the basename of the file is
--
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