data: URLs for abstract paths

src/tl/tl/tlStream.cc

@@ -43,7 +43,7 @@
 #include "tlFileUtils.h"
 #include "tlLog.h"
 #include "tlResources.h"
-
+#include "tlBase64.h"
 #include "tlException.h"
 #include "tlString.h"
 #include "tlUri.h"
@@ -242,6 +242,14 @@ InputStream::InputStream (const std::string &abstract_path)
 
 #endif
 
+  } else if (ex.test ("data:")) {
+
+    std::vector<unsigned char> data = tl::from_base64 (ex.get ());
+
+    char *data_ptr = new char [data.size ()];
+    memcpy (data_ptr, data.begin ().operator-> (), data.size ());
+    mp_delegate = new InputMemoryStream (data_ptr, data.size (), true);
+
   } else if (ex.test ("pipe:")) {
 
     mp_delegate = new InputPipe (ex.get ());

src/tl/tl/tlStream.h

@@ -122,13 +122,22 @@ public:
    *
    *  @param data The memory block where to read from
    *  @param length The length of the block
+   *  @param owns_data If true, the memory becomes owned by the stream
    */
-  InputMemoryStream (const char *data, size_t length)
-    : mp_data (data), m_length (length), m_pos (0)
+  InputMemoryStream (const char *data, size_t length, bool owns_data = false)
+    : mp_data (data), m_length (length), m_owns_data (owns_data), m_pos (0)
   {
     //  .. nothing yet ..
   }
 
+  ~InputMemoryStream ()
+  {
+    if (m_owns_data) {
+      delete [] const_cast<char *> (mp_data);
+    }
+    mp_data = 0;
+  }
+
   virtual size_t read (char *b, size_t n)
   {
     if (m_pos + n > m_length) {
@@ -170,7 +179,9 @@ private:
   InputMemoryStream &operator= (const InputMemoryStream &);
 
   const char *mp_data;
-  size_t m_length, m_pos;
+  size_t m_length;
+  bool m_owns_data;
+  size_t m_pos;
 };
 
 /**

src/tl/unit_tests/tlStreamTests.cc

@@ -163,6 +163,23 @@ TEST(TextInputStream)
   }
 }
 
+TEST(DataInputStream)
+{
+  tl::InputStream is ("data:SGVsbG8sIHdvcmxkIQpXaXRoIGFub3RoZXIgbGluZQoNDQpzZXBhcmF0ZWQgYnkgYSBMRkNSIGFuZCBDUkxGLg==");
+  tl::TextInputStream tis (is);
+  EXPECT_EQ (tis.get_line (), "Hello, world!");
+  EXPECT_EQ (tis.line_number (), size_t (1));
+  EXPECT_EQ (tis.get_line (), "With another line");
+  EXPECT_EQ (tis.line_number (), size_t (2));
+  EXPECT_EQ (tis.peek_char (), '\n');
+  EXPECT_EQ (tis.get_line (), "");
+  EXPECT_EQ (tis.line_number (), size_t (3));
+  EXPECT_EQ (tis.peek_char (), 's');
+  EXPECT_EQ (tis.get_line (), "separated by a LFCR and CRLF.");
+  EXPECT_EQ (tis.line_number (), size_t (4));
+  EXPECT_EQ (tis.at_end (), true);
+}
+
 namespace
 {