Add pathJoin functions for join parts of path.

1 files changed, 99 insertions, 0 deletions

diff --git a/src/utils/stringutils.cpp b/src/utils/stringutils.cpp
index 28b2c8e1e..3663cc007 100644
--- a/src/utils/stringutils.cpp
+++ b/src/utils/stringutils.cpp
@@ -1044,6 +1044,105 @@ void sanitizePath(std::string &path)
     replaceRecursiveAll(path, sep2Str, sepStr);
 }
 
+std::string pathJoin(std::string str1,
+                     const std::string &str2)
+{
+#ifdef WIN32
+    const char sep = '\\';
+    std::string sepStr = "\\";
+#else
+    const char sep = '/';
+    std::string sepStr = "/";
+#endif
+
+    if (str1.empty())
+    {
+        if (str2[0] == sep)
+            return str2;
+        else
+            return sepStr.append(str2);
+    }
+    const size_t sz1 = str1.size();
+    if (str2.empty())
+    {
+        if (str1[sz1 - 1] == sep)
+            return str1;
+        else
+            return str1.append(sepStr);
+    }
+    if (str1[sz1 - 1] == sep)
+    {
+        if (str2[0] == sep)
+            return str1.append(str2.substr(1));
+        else
+            return str1.append(str2);
+    }
+    else
+    {
+        if (str2[0] == sep)
+            return str1.append(str2);
+        else
+            return str1.append(sepStr).append(str2);
+    }
+}
+
+std::string pathJoin(std::string str1,
+                     const std::string &str2,
+                     const std::string &str3)
+{
+#ifdef WIN32
+    const char sep = '\\';
+    std::string sepStr = "\\";
+#else
+    const char sep = '/';
+    std::string sepStr = "/";
+#endif
+
+    if (str1.empty())
+    {
+        return pathJoin(str2, str3);
+    }
+    size_t sz1 = str1.size();
+    if (str2.empty())
+    {
+        return pathJoin(str1, str3);
+    }
+    if (str3.empty())
+    {
+        return pathJoin(str1, str2);
+    }
+    if (str1[sz1 - 1] == sep)
+    {
+        if (str2[0] == sep)
+            str1.append(str2.substr(1));
+        else
+            str1.append(str2);
+    }
+    else
+    {
+        if (str2[0] == sep)
+            str1.append(str2);
+        else
+            str1.append(sepStr).append(str2);
+    }
+
+    sz1 = str1.size();
+    if (str1[sz1 - 1] == sep)
+    {
+        if (str3[0] == sep)
+            return str1.append(str3.substr(1));
+        else
+            return str1.append(str3);
+    }
+    else
+    {
+        if (str3[0] == sep)
+            return str1.append(str3);
+        else
+            return str1.append(sepStr).append(str3);
+    }
+}
+
 #ifndef DYECMD
 void replaceItemLinks(std::string &msg)
 {