Patch 7 - Fix slice2cpp and symbolic links

3 files changed, 67 insertions, 52 deletions

diff --git a/cpp/include/Slice/Util.h b/cpp/include/Slice/Util.h
index 45f7b0c8daa..06c1b325b67 100644
--- a/cpp/include/Slice/Util.h
+++ b/cpp/include/Slice/Util.h
@@ -27,7 +27,7 @@ SLICE_API void emitWarning(const std::string&, const std::string&, const std::st
 SLICE_API void emitRaw(const char*);
 SLICE_API std::vector<std::string> filterMcppWarnings(const std::string&);
 SLICE_API void printGeneratedHeader(IceUtilInternal::Output& out, const std::string&, const std::string& commentStyle = "//");
-
+SLICE_API std::string normalizePath(const std::string&);
 }
 
 #endif
diff --git a/cpp/src/Slice/Parser.cpp b/cpp/src/Slice/Parser.cpp
index abdffefb7e1..b8980cec70e 100644
--- a/cpp/src/Slice/Parser.cpp
+++ b/cpp/src/Slice/Parser.cpp
@@ -9,6 +9,7 @@
 
 #include <IceUtil/Functional.h>
 #include <IceUtil/InputUtil.h>
+#include <IceUtil/FileUtil.h>
 #include <IceUtil/StringUtil.h>
 #include <IceUtil/Unicode.h>
 #include <Slice/Parser.h>
@@ -19,6 +20,9 @@
 
 #ifdef _WIN32
 #   include <io.h>
+#else
+#   include <climits>  // For PATH_MAX
+#   include <unistd.h> // For readlink()
 #endif
 
 using namespace std;
@@ -5657,6 +5661,56 @@ Slice::Unit::nextLine()
     _currentLine++;
 }
 
+#ifndef _WIN32
+namespace
+{
+string
+readLink(const string& orig)
+{
+    string result = orig;
+    string::size_type beg = 0;
+    string::size_type next = string::npos;
+    do
+    {
+        string subpath;
+        next = result.find('/', beg + 1);
+        if(next == string::npos)
+        {
+            subpath = result;
+        }
+        else
+        {
+            subpath = result.substr(0, next);
+        }
+
+        char buf[PATH_MAX + 1];
+        int len = static_cast<int>(readlink(subpath.c_str(), buf, sizeof(buf)));
+        if(len > 0)
+        {
+            buf[len] = '\0';
+            string linkpath = buf;
+            if(!IceUtilInternal::isAbsolutePath(linkpath)) // Path relative to the location of the link
+            {
+                string::size_type pos = subpath.rfind('/');
+                assert(pos != string::npos);
+                linkpath = subpath.substr(0, pos + 1) + linkpath;
+            }
+            result = normalizePath(linkpath) + (next != string::npos ? result.substr(next) : string());
+            beg = 0;
+            next = 0;
+        }
+        else
+        {
+            beg = next;
+        }
+    }
+    while(next != string::npos);
+    return result;
+}
+
+}
+#endif
+
 bool
 Slice::Unit::scanPosition(const char* s)
 {
@@ -5702,6 +5756,16 @@ Slice::Unit::scanPosition(const char* s)
 
     LineType type = File;
 
+    //
+    // We need to compare the file targets as one could be a symbolic link.
+    //
+#ifndef _WIN32
+    if(readLink(currentFile) == readLink(_topLevelFile))
+    {
+        currentFile = _topLevelFile;
+    }
+#endif
+
     if(_currentLine == 0)
     {
         if(_currentIncludeLevel > 0 || currentFile != _topLevelFile)
diff --git a/cpp/src/Slice/Util.cpp b/cpp/src/Slice/Util.cpp
index 97b9e7c9844..5973da2b627 100644
--- a/cpp/src/Slice/Util.cpp
+++ b/cpp/src/Slice/Util.cpp
@@ -18,11 +18,8 @@
 using namespace std;
 using namespace Slice;
 
-namespace
-{
-
 string
-normalizePath(const string& path)
+Slice::normalizePath(const string& path)
 {
     string result = path;
 
@@ -78,8 +75,6 @@ normalizePath(const string& path)
     return result;
 }
 
-}
-
 string
 Slice::fullPath(const string& path)
 {
@@ -93,51 +88,7 @@ Slice::fullPath(const string& path)
         }
     }
 
-    result = normalizePath(result);
-
-#ifdef _WIN32
-    return result;
-#else
-
-    string::size_type beg = 0;
-    string::size_type next;
-    do
-    {
-        string subpath;
-        next = result.find('/', beg + 1);
-        if(next == string::npos)
-        {
-            subpath = result;
-        }
-        else
-        {
-            subpath = result.substr(0, next);
-        }
-
-        char buf[PATH_MAX + 1];
-        int len = static_cast<int>(readlink(subpath.c_str(), buf, sizeof(buf)));
-        if(len > 0)
-        {
-            buf[len] = '\0';
-            string linkpath = buf;
-            if(!IceUtilInternal::isAbsolutePath(linkpath)) // Path relative to the location of the link
-            {
-                string::size_type pos = subpath.rfind('/');
-                assert(pos != string::npos);
-                linkpath = subpath.substr(0, pos + 1) + linkpath;
-            }
-            result = normalizePath(linkpath) + (next != string::npos ? result.substr(next) : string());
-            beg = 0;
-            next = 0;
-        }
-        else
-        {
-            beg = next;
-        }
-    }
-    while(next != string::npos);
-    return result;
-#endif
+    return normalizePath(result);
 }
 
 string