From afd04635e905ac3c46a16bca12d83a317d14bb5a Mon Sep 17 00:00:00 2001
From: Arvid Norberg <arvid@libtorrent.org>
Date: Wed, 18 Feb 2009 06:01:24 +0000
Subject: [PATCH] replaced std::isdigit with is_digit, to avoid asserts on
 windows and locale dependency. Fixes #484

---
 include/libtorrent/bencode.hpp       | 14 ++------------
 include/libtorrent/escape_string.hpp |  4 +++-
 include/libtorrent/peer_id.hpp       |  9 ++++-----
 src/escape_string.cpp                | 10 ++++++++++
 src/identify_client.cpp              | 11 +----------
 src/lazy_bdecode.cpp                 |  7 +++----
 6 files changed, 23 insertions(+), 32 deletions(-)

diff --git a/include/libtorrent/bencode.hpp b/include/libtorrent/bencode.hpp
index b5b330d4d..cc4e5a220 100644
--- a/include/libtorrent/bencode.hpp
+++ b/include/libtorrent/bencode.hpp
@@ -80,17 +80,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/config.hpp"
 
 #include "libtorrent/assert.hpp"
-
-#if defined(_MSC_VER)
-namespace std
-{
-	using ::isdigit;
-	using ::atoi;
-};
-
-#define for if (false) {}  else for
-#endif
-
+#include "libtorrent/escape_string.hpp"
 
 namespace libtorrent
 {
@@ -341,7 +331,7 @@ namespace libtorrent
 			// ----------------------------------------------
 			// string
 			default:
-				if (isdigit((unsigned char)*in))
+				if (is_digit((unsigned char)*in))
 				{
 					std::string len_s = read_until(in, end, ':', err);
 					if (err)
diff --git a/include/libtorrent/escape_string.hpp b/include/libtorrent/escape_string.hpp
index 9f141a923..f76939779 100644
--- a/include/libtorrent/escape_string.hpp
+++ b/include/libtorrent/escape_string.hpp
@@ -42,7 +42,9 @@ POSSIBILITY OF SUCH DAMAGE.
 
 namespace libtorrent
 {
-	boost::array<char, 3 + std::numeric_limits<size_type>::digits10> to_string(size_type n);
+	boost::array<char, 3 + std::numeric_limits<size_type>::digits10> TORRENT_EXPORT to_string(size_type n);
+	bool TORRENT_EXPORT is_digit(char c);
+	bool TORRENT_EXPORT isprint(char c);
 
 	std::string TORRENT_EXPORT unescape_string(std::string const& s);
 	std::string TORRENT_EXPORT escape_string(const char* str, int len);
diff --git a/include/libtorrent/peer_id.hpp b/include/libtorrent/peer_id.hpp
index 0ec096de3..d737fb4fb 100644
--- a/include/libtorrent/peer_id.hpp
+++ b/include/libtorrent/peer_id.hpp
@@ -42,6 +42,7 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #include "libtorrent/config.hpp"
 #include "libtorrent/assert.hpp"
+#include "libtorrent/escape_string.hpp"
 
 namespace libtorrent
 {
@@ -168,8 +169,6 @@ namespace libtorrent
 
 	inline std::istream& operator>>(std::istream& is, big_number& peer)
 	{
-		using namespace std;
-
 		for (big_number::iterator i = peer.begin();
 			i != peer.end(); ++i)
 		{
@@ -182,11 +181,11 @@ namespace libtorrent
 				|| ((c[1] < '0' || c[1] > '9') && (c[1] < 'a' || c[1] > 'f'))
 				|| is.fail())
 			{
-				is.setstate(ios_base::failbit);
+				is.setstate(std::ios_base::failbit);
 				return is;
 			}
-			*i = ((isdigit(c[0])?c[0]-'0':c[0]-'a'+10) << 4)
-				+ (isdigit(c[1])?c[1]-'0':c[1]-'a'+10);
+			*i = ((is_digit(c[0])?c[0]-'0':c[0]-'a'+10) << 4)
+				+ (is_digit(c[1])?c[1]-'0':c[1]-'a'+10);
 		}
 		return is;
 	}
diff --git a/src/escape_string.cpp b/src/escape_string.cpp
index 40384e760..39c02a9a6 100644
--- a/src/escape_string.cpp
+++ b/src/escape_string.cpp
@@ -69,6 +69,16 @@ namespace libtorrent
 		return ret;
 	}
 
+	bool is_digit(char c)
+	{
+		return c >= '0' && c <= '9';
+	}
+
+	bool isprint(char c)
+	{
+		return c >= 32 && c < 127;
+	}
+
 	std::string unescape_string(std::string const& s)
 	{
 		std::string ret;
diff --git a/src/identify_client.cpp b/src/identify_client.cpp
index 895792884..3a54029e3 100644
--- a/src/identify_client.cpp
+++ b/src/identify_client.cpp
@@ -48,28 +48,19 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #include "libtorrent/identify_client.hpp"
 #include "libtorrent/fingerprint.hpp"
+#include "libtorrent/escape_string.hpp"
 
 namespace
 {
 
 	using namespace libtorrent;
 
-	bool is_digit(char c)
-	{
-		return c >= '0' && c <= '9';
-	}
-
 	int decode_digit(char c)
 	{
 		if (is_digit(c)) return c - '0';
 		return unsigned(c) - 'A' + 10;
 	}
 
-	bool isprint(char c)
-	{
-		return c >= 32 && c < 127;
-	}
-
 	// takes a peer id and returns a valid boost::optional
 	// object if the peer id matched the azureus style encoding
 	// the returned fingerprint contains information about the
diff --git a/src/lazy_bdecode.cpp b/src/lazy_bdecode.cpp
index bc0beaab4..983b48a35 100644
--- a/src/lazy_bdecode.cpp
+++ b/src/lazy_bdecode.cpp
@@ -31,6 +31,7 @@ POSSIBILITY OF SUCH DAMAGE.
 */
 
 #include "libtorrent/lazy_entry.hpp"
+#include "libtorrent/escape_string.hpp"
 #include <iostream>
 #include <iomanip>
 #include <cstring>
@@ -58,8 +59,7 @@ namespace libtorrent
 	{
 		while (start < end && *start != delimiter)
 		{
-			using namespace std;
-			if (!isdigit(*start)) { return 0; }
+			if (!is_digit(*start)) { return 0; }
 			val *= 10;
 			val += *start - '0';
 			++start;
@@ -154,8 +154,7 @@ namespace libtorrent
 				}
 				default:
 				{
-					using namespace std;
-					if (!isdigit(t)) return fail_bdecode(ret);
+					if (!is_digit(t)) return fail_bdecode(ret);
 
 					boost::int64_t len = t - '0';
 					start = parse_int(start, end, ':', len);