initial code repo

[stor4nfv.git] / src / ceph / src / common / url_escape.cc

diff --git a/src/ceph/src/common/url_escape.cc b/src/ceph/src/common/url_escape.cc
new file mode 100644 (file)
index 0000000..6580d28
--- /dev/null
+++ b/src/ceph/src/common/url_escape.cc
@@ -0,0 +1,64 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "url_escape.h"
+
+#include <stdexcept>
+#include <sstream>
+
+std::string url_escape(const std::string& s)
+{
+  std::string out;
+  for (auto c : s) {
+    if (std::isalnum(c) || c == '-' || c == '.' || c == '_' || c == '~' ||
+       c == '/') {
+      out.push_back(c);
+    } else {
+      char t[4];
+      snprintf(t, sizeof(t), "%%%02x", (int)(unsigned char)c);
+      out.append(t);
+    }
+  }
+  return out;
+}
+
+std::string url_unescape(const std::string& s)
+{
+  std::string out;
+  const char *end = s.c_str() + s.size();
+  for (const char *c = s.c_str(); c < end; ++c) {
+    switch (*c) {
+    case '%':
+      {
+       unsigned char v = 0;
+       for (unsigned i=0; i<2; ++i) {
+         ++c;
+         if (c >= end) {
+           std::ostringstream ss;
+           ss << "invalid escaped string at pos " << (c - s.c_str()) << " of '"
+              << s << "'";
+           throw std::runtime_error(ss.str());
+         }
+         v <<= 4;
+         if (*c >= '0' && *c <= '9') {
+           v += *c - '0';
+         } else if (*c >= 'a' && *c <= 'f') {
+           v += *c - 'a' + 10;
+         } else if (*c >= 'A' && *c <= 'F') {
+           v += *c - 'A' + 10;
+         } else {
+           std::ostringstream ss;
+           ss << "invalid escaped string at pos " << (c - s.c_str()) << " of '"
+              << s << "'";
+           throw std::runtime_error(ss.str());
+         }
+       }
+       out.push_back(v);
+      }
+      break;
+    default:
+      out.push_back(*c);
+    }
+  }
+  return out;
+}