From b7816ff2810b44293ca05aa88a536afd74ea566c Mon Sep 17 00:00:00 2001
From: Arvid Norberg <arvid@libtorrent.org>
Date: Fri, 19 Jul 2013 22:26:07 +0000
Subject: [PATCH] print_entry should not be exported

---
 examples/dump_torrent.cpp         | 141 +++++++++++++++++++++++++++++-
 include/libtorrent/lazy_entry.hpp |   3 +-
 2 files changed, 141 insertions(+), 3 deletions(-)

diff --git a/examples/dump_torrent.cpp b/examples/dump_torrent.cpp
index 6b57d7303..816cbeed8 100644
--- a/examples/dump_torrent.cpp
+++ b/examples/dump_torrent.cpp
@@ -97,6 +97,145 @@ int load_file(std::string const& filename, std::vector<char>& v, libtorrent::err
 	return 0;
 }
 
+int line_longer_than(libtorrent::lazy_entry const& e, int limit)
+{
+	using namespace libtorrent;
+
+	int line_len = 0;
+	switch (e.type())
+	{
+	case lazy_entry::list_t:
+		line_len += 4;
+		if (line_len > limit) return -1;
+		for (int i = 0; i < e.list_size(); ++i)
+		{
+			int ret = line_longer_than(*e.list_at(i), limit - line_len);
+			if (ret == -1) return -1;
+			line_len += ret + 2;
+		}
+		break;
+	case lazy_entry::dict_t:
+		line_len += 4;
+		if (line_len > limit) return -1;
+		for (int i = 0; i < e.dict_size(); ++i)
+		{
+			line_len += 4 + e.dict_at(i).first.size();
+			if (line_len > limit) return -1;
+			int ret = line_longer_than(*e.dict_at(i).second, limit - line_len);
+			if (ret == -1) return -1;
+			line_len += ret + 1;
+		}
+		break;
+	case lazy_entry::string_t:
+		line_len += 3 + e.string_length();
+		break;
+	case lazy_entry::int_t:
+	{
+		size_type val = e.int_value();
+		while (val > 0)
+		{
+			++line_len;
+			val /= 10;
+		}
+		line_len += 2;
+	}
+	break;
+	case lazy_entry::none_t:
+		line_len += 4;
+		break;
+	}
+
+	if (line_len > limit) return -1;
+	return line_len;
+}
+
+std::string print_entry(libtorrent::lazy_entry const& e, bool single_line = false, int indent = 0)
+{
+	using namespace libtorrent;
+
+	char indent_str[200];
+	memset(indent_str, ' ', 200);
+	indent_str[0] = ',';
+	indent_str[1] = '\n';
+	indent_str[199] = 0;
+	if (indent < 197 && indent >= 0) indent_str[indent+2] = 0;
+	std::string ret;
+	switch (e.type())
+	{
+		case lazy_entry::none_t: return "none";
+		case lazy_entry::int_t:
+		{
+			char str[100];
+			snprintf(str, sizeof(str), "%"PRId64, e.int_value());
+			return str;
+		}
+		case lazy_entry::string_t:
+		{
+			bool printable = true;
+			char const* str = e.string_ptr();
+			for (int i = 0; i < e.string_length(); ++i)
+			{
+				using namespace std;
+				if (is_print((unsigned char)str[i])) continue;
+				printable = false;
+				break;
+			}
+			ret += "'";
+			if (printable)
+			{
+				ret += e.string_value();
+				ret += "'";
+				return ret;
+			}
+			for (int i = 0; i < e.string_length(); ++i)
+			{
+				char tmp[5];
+				snprintf(tmp, sizeof(tmp), "%02x", (unsigned char)str[i]);
+				ret += tmp;
+			}
+			ret += "'";
+			return ret;
+		}
+		case lazy_entry::list_t:
+		{
+			ret += '[';
+			bool one_liner = line_longer_than(e, 200) != -1 || single_line;
+
+			if (!one_liner) ret += indent_str + 1;
+			for (int i = 0; i < e.list_size(); ++i)
+			{
+				if (i == 0 && one_liner) ret += " ";
+				ret += ::print_entry(*e.list_at(i), single_line, indent + 2);
+				if (i < e.list_size() - 1) ret += (one_liner?", ":indent_str);
+				else ret += (one_liner?" ":indent_str+1);
+			}
+			ret += "]";
+			return ret;
+		}
+		case lazy_entry::dict_t:
+		{
+			ret += "{";
+			bool one_liner = line_longer_than(e, 200) != -1 || single_line;
+
+			if (!one_liner) ret += indent_str+1;
+			for (int i = 0; i < e.dict_size(); ++i)
+			{
+				if (i == 0 && one_liner) ret += " ";
+				std::pair<std::string, lazy_entry const*> ent = e.dict_at(i);
+				ret += "'";
+				ret += ent.first;
+				ret += "': ";
+				ret += ::print_entry(*ent.second, single_line, indent + 2);
+				if (i < e.dict_size() - 1) ret += (one_liner?", ":indent_str);
+				else ret += (one_liner?" ":indent_str+1);
+			}
+			ret += "}";
+			return ret;
+		}
+	}
+	return ret;
+}
+
 int main(int argc, char* argv[])
 {
 	using namespace libtorrent;
@@ -134,7 +273,7 @@ int main(int argc, char* argv[])
 	ret = lazy_bdecode(&buf[0], &buf[0] + buf.size(), e, ec, &pos
 		, depth_limit, item_limit);
 
-	printf("\n\n----- raw info -----\n\n%s\n", print_entry(e).c_str());
+	printf("\n\n----- raw info -----\n\n%s\n", ::print_entry(e).c_str());
 
 	if (ret != 0)
 	{
diff --git a/include/libtorrent/lazy_entry.hpp b/include/libtorrent/lazy_entry.hpp
index 99f4f37f0..f1bb47eaf 100644
--- a/include/libtorrent/lazy_entry.hpp
+++ b/include/libtorrent/lazy_entry.hpp
@@ -279,8 +279,7 @@ namespace libtorrent
 		lazy_entry val;
 	};
 
-	// TODO: 3 does this need to be a public function?
-	TORRENT_EXPORT std::string print_entry(lazy_entry const& e
+	TORRENT_EXTRA_EXPORT std::string print_entry(lazy_entry const& e
 		, bool single_line = false, int indent = 0);
 }