Refactor HTTP utilities.

src/HttpUtil.h

@@ -0,0 +1,45 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CS_HTTPUTIL_H_
+#define CS_HTTPUTIL_H_
+
+#include "llvm/SmallVector.h"
+#include "llvm/StringRef.h"
+
+namespace wpi {
+class raw_istream;
+}
+
+namespace cs {
+
+// Read a line from an input stream (up to a maximum length).
+// The returned buffer will contain the trailing \n (unless the maximum length
+// was reached).  \r's are stripped from the buffer.
+// @param buf Buffer for output
+// @param error Set to true if an error occurred
+// @return Line
+llvm::StringRef ReadLine(wpi::raw_istream& is, llvm::SmallVectorImpl<char>& buf,
+                         int maxLen, bool* error);
+
+// Unescape a %xx-encoded URI.
+// @param buf Buffer for output
+// @param error Set to true if an error occurred
+// @return Escaped string
+llvm::StringRef UnescapeURI(llvm::StringRef str,
+                            llvm::SmallVectorImpl<char>& buf, bool* error);
+
+// Escape a string with %xx-encoding.
+// @param buf Buffer for output
+// @param spacePlus If true, encodes spaces to '+' rather than "%20"
+// @return Escaped string
+llvm::StringRef EscapeURI(llvm::StringRef str, llvm::SmallVectorImpl<char>& buf,
+                          bool spacePlus = true);
+
+}  // namespace cs
+
+#endif  // CS_HTTPUTIL_H_