3 files changed, 74 insertions, 0 deletions

diff --git a/src/util/numeric.h b/src/util/numeric.h
index 5ed4d0e99..a028f1ff2 100644
--- a/src/util/numeric.h
+++ b/src/util/numeric.h
@@ -120,6 +120,7 @@ inline s16 rangelim(s16 i, s16 max)
 }
 
 #define rangelim(d, min, max) ((d) < (min) ? (min) : ((d)>(max)?(max):(d)))
+#define myfloor(x) ((x) > 0.0 ? (int)(x) : (int)(x) - 1)
 
 inline v3s16 arealim(v3s16 p, s16 d)
 {
diff --git a/src/util/string.cpp b/src/util/string.cpp
index 215ac299d..61b307c60 100644
--- a/src/util/string.cpp
+++ b/src/util/string.cpp
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "../sha1.h"
 #include "../base64.h"
+#include "../porting.h"
 
 // Get an sha-1 hash of the player's name combined with
 // the password entered. That's what the server uses as
@@ -47,3 +48,67 @@ size_t curl_write_data(char *ptr, size_t size, size_t nmemb, void *userdata) {
     stream->write(ptr, count);
     return count;
 }
+
+u32 readFlagString(std::string str, FlagDesc *flagdesc) {
+	u32 result = 0;
+	char *s = &str[0];
+	char *flagstr, *strpos = NULL;
+	
+	while ((flagstr = strtok_r(s, ",", &strpos))) {
+		s = NULL;
+		
+		while (*flagstr == ' ' || *flagstr == '\t')
+			flagstr++;
+		
+		for (int i = 0; flagdesc[i].name; i++) {
+			if (!strcasecmp(flagstr, flagdesc[i].name)) {
+				result |= flagdesc[i].flag;
+				break;
+			}
+		}
+	}
+	
+	return result;
+}
+
+std::string writeFlagString(u32 flags, FlagDesc *flagdesc) {
+	std::string result;
+	
+	for (int i = 0; flagdesc[i].name; i++) {
+		if (flags & flagdesc[i].flag) {
+			result += flagdesc[i].name;
+			result += ", ";
+		}
+	}
+	
+	size_t len = result.length();
+	if (len >= 2)
+		result.erase(len - 2, 2);
+	
+	return result;
+}
+
+char *mystrtok_r(char *s, const char *sep, char **lasts) {
+	char *t;
+
+	if (!s)
+		s = *lasts;
+
+	while (*s && strchr(sep, *s))
+		s++;
+
+	if (!*s)
+		return NULL;
+
+	t = s;
+	while (*t) {
+		if (strchr(sep, *t)) {
+			*t++ = '\0';
+			break;
+		}
+		t++;
+	}
+	
+	*lasts = t;
+	return s;
+}
diff --git a/src/util/string.h b/src/util/string.h
index 58274c677..a469a074a 100644
--- a/src/util/string.h
+++ b/src/util/string.h
@@ -28,6 +28,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <vector>
 #include <sstream>
 
+struct FlagDesc {
+	const char *name;
+	u32 flag;
+};
+
 static inline std::string padStringRight(std::string s, size_t len)
 {
 	if(len > s.size())
@@ -283,6 +288,9 @@ inline std::string wrap_rows(const std::string &from, u32 rowlen)
 
 std::string translatePassword(std::string playername, std::wstring password);
 size_t curl_write_data(char *ptr, size_t size, size_t nmemb, void *userdata);
+u32 readFlagString(std::string str, FlagDesc *flagdesc);
+std::string writeFlagString(u32 flags, FlagDesc *flagdesc);
+char *mystrtok_r(char *s, const char *sep, char **lasts);
 
 #endif