Adds UriParser::Parse and unit tests

This can be used to parse URIs passed to 'platform connect'

Differential Revision: http://reviews.llvm.org/D6858

llvm-svn: 225317

1 files changed, 58 insertions, 0 deletions

diff --git a/lldb/source/Utility/UriParser.cpp b/lldb/source/Utility/UriParser.cpp
new file mode 100644
index 00000000000..bf1e601485b
--- /dev/null
+++ b/lldb/source/Utility/UriParser.cpp
@@ -0,0 +1,58 @@
+//===-- UriParser.cpp -------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Utility/UriParser.h"
+
+// C Includes
+#include <stdlib.h>
+
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+
+//----------------------------------------------------------------------
+// UriParser::Parse
+//----------------------------------------------------------------------
+bool
+UriParser::Parse(const char* uri,
+    std::string& scheme,
+    std::string& hostname,
+    int& port,
+    std::string& path
+    )
+{
+    char scheme_buf[100] = {0};
+    char hostname_buf[256] = {0};
+    char port_buf[11] = {0}; // 10==strlen(2^32)
+    char path_buf[2049] = {'/', 0};
+  
+    bool ok = false;
+         if (4==sscanf(uri, "%99[^:/]://%255[^/:]:%[^/]/%2047s", scheme_buf, hostname_buf, port_buf, path_buf+1)) { ok = true; }
+    else if (3==sscanf(uri, "%99[^:/]://%255[^/:]:%[^/]", scheme_buf, hostname_buf, port_buf)) { ok = true; }
+    else if (3==sscanf(uri, "%99[^:/]://%255[^/]/%2047s", scheme_buf, hostname_buf, path_buf+1)) { ok = true; }
+    else if (2==sscanf(uri, "%99[^:/]://%255[^/]", scheme_buf, hostname_buf)) { ok = true; }
+
+    char* end = port_buf;
+    int port_tmp = strtoul(port_buf, &end, 10);
+    if (*end != 0)
+    {
+        // there are invalid characters in port_buf
+        return false;
+    }
+
+    if (ok)
+    {
+        scheme.assign(scheme_buf);
+        hostname.assign(hostname_buf);
+        port = port_tmp;
+        path.assign(path_buf);
+    }
+    return ok;
+}
+