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-rw-r--r--src/univalue/lib/univalue_write.cpp113
1 files changed, 113 insertions, 0 deletions
diff --git a/src/univalue/lib/univalue_write.cpp b/src/univalue/lib/univalue_write.cpp
new file mode 100644
index 0000000000..827eb9b271
--- /dev/null
+++ b/src/univalue/lib/univalue_write.cpp
@@ -0,0 +1,113 @@
+// Copyright 2014 BitPay Inc.
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <iomanip>
+#include <sstream>
+#include <stdio.h>
+#include "univalue.h"
+#include "univalue_escapes.h"
+
+static std::string json_escape(const std::string& inS)
+{
+ std::string outS;
+ outS.reserve(inS.size() * 2);
+
+ for (unsigned int i = 0; i < inS.size(); i++) {
+ unsigned char ch = inS[i];
+ const char *escStr = escapes[ch];
+
+ if (escStr)
+ outS += escStr;
+ else
+ outS += ch;
+ }
+
+ return outS;
+}
+
+std::string UniValue::write(unsigned int prettyIndent,
+ unsigned int indentLevel) const
+{
+ std::string s;
+ s.reserve(1024);
+
+ unsigned int modIndent = indentLevel;
+ if (modIndent == 0)
+ modIndent = 1;
+
+ switch (typ) {
+ case VNULL:
+ s += "null";
+ break;
+ case VOBJ:
+ writeObject(prettyIndent, modIndent, s);
+ break;
+ case VARR:
+ writeArray(prettyIndent, modIndent, s);
+ break;
+ case VSTR:
+ s += "\"" + json_escape(val) + "\"";
+ break;
+ case VNUM:
+ s += val;
+ break;
+ case VBOOL:
+ s += (val == "1" ? "true" : "false");
+ break;
+ }
+
+ return s;
+}
+
+static void indentStr(unsigned int prettyIndent, unsigned int indentLevel, std::string& s)
+{
+ s.append(prettyIndent * indentLevel, ' ');
+}
+
+void UniValue::writeArray(unsigned int prettyIndent, unsigned int indentLevel, std::string& s) const
+{
+ s += "[";
+ if (prettyIndent)
+ s += "\n";
+
+ for (unsigned int i = 0; i < values.size(); i++) {
+ if (prettyIndent)
+ indentStr(prettyIndent, indentLevel, s);
+ s += values[i].write(prettyIndent, indentLevel + 1);
+ if (i != (values.size() - 1)) {
+ s += ",";
+ }
+ if (prettyIndent)
+ s += "\n";
+ }
+
+ if (prettyIndent)
+ indentStr(prettyIndent, indentLevel - 1, s);
+ s += "]";
+}
+
+void UniValue::writeObject(unsigned int prettyIndent, unsigned int indentLevel, std::string& s) const
+{
+ s += "{";
+ if (prettyIndent)
+ s += "\n";
+
+ for (unsigned int i = 0; i < keys.size(); i++) {
+ if (prettyIndent)
+ indentStr(prettyIndent, indentLevel, s);
+ s += "\"" + json_escape(keys[i]) + "\":";
+ if (prettyIndent)
+ s += " ";
+ s += values.at(i).write(prettyIndent, indentLevel + 1);
+ if (i != (values.size() - 1))
+ s += ",";
+ if (prettyIndent)
+ s += "\n";
+ }
+
+ if (prettyIndent)
+ indentStr(prettyIndent, indentLevel - 1, s);
+ s += "}";
+}
+