get rid of all mysterious numbers that meant length of string literals

src/conv.cpp

@@ -204,11 +204,11 @@ void EscapeHtml(std::string &s)
 		s.replace(i, j-i, "");
 	}
 	for (size_t i = s.find("'"); i != std::string::npos; i = s.find("'"))
-		s.replace(i, 6, "'");
+		s.replace(i, static_strlen("'"), "'");
 	for (size_t i = s.find("""); i != std::string::npos; i = s.find("""))
-		s.replace(i, 6, "\"");
+		s.replace(i, static_strlen("""), "\"");
 	for (size_t i = s.find("&"); i != std::string::npos; i = s.find("&"))
-		s.replace(i, 5, "&");
+		s.replace(i, static_strlen("&"), "&");
 	for (size_t i = 0; i < s.length(); ++i)
 	{
 		if (erase)

src/conv.h

@@ -26,6 +26,11 @@
 #include "window.h"
 #include "song.h"
 
+template <size_t N> inline size_t static_strlen(const char (&)[N])
+{
+	return N-1;
+}
+
 void ToLower(std::string &);
 
 int StrToInt(const std::string &);

src/info.cpp

@@ -134,7 +134,7 @@ void Info::GetArtist()
 #		ifdef HAVE_PTHREAD_H
 		if (Downloader && !ArtistReady)
 		{
-			ShowMessage("Artist's info is being downloaded...");
+			ShowMessage("Artist info is being downloaded...");
 			return;
 		}
 		else if (ArtistReady)
@@ -263,7 +263,7 @@ void *Info::PrepareArtist(void *screen_void_ptr)
 		result[i] = '.';
 		size_t j = result.find("</name>");
 		result[j] = '.';
-		i += 6;
+		i += static_strlen("<name>");
 		similar.push_back(result.substr(i, j-i));
 		EscapeHtml(similar.back());
 	}
@@ -273,11 +273,11 @@ void *Info::PrepareArtist(void *screen_void_ptr)
 		result[i] = '.';
 		size_t j = result.find("</url>");
 		result[j] = '.';
-		i += 5;
+		i += static_strlen("<url>");
 		urls.push_back(result.substr(i, j-i));
 	}
 	
-	a = result.find("<content>")+9;
+	a = result.find("<content>")+static_strlen("<content>");
 	b = result.find("</content>");
 	
 	if (a == b)
@@ -287,8 +287,8 @@ void *Info::PrepareArtist(void *screen_void_ptr)
 	}
 	else
 	{
-		a += 9; // for <![CDATA[
-		b -= 3; // for ]]>
+		a += static_strlen("<![CDATA[");
+		b -= static_strlen("]]>");
 		result = result.substr(a, b-a);
 	}
 	

src/lyrics.cpp

@@ -209,8 +209,8 @@ void *Lyrics::Get(void *screen_void_ptr)
 	char *c_title = curl_easy_escape(0, title.c_str(), title.length());
 	
 	std::string url = my_lyrics->url;
-	url.replace(url.find("%artist%"), 8, c_artist);
-	url.replace(url.find("%title%"), 7, c_title);
+	url.replace(url.find("%artist%"), static_strlen("%artist%"), c_artist);
+	url.replace(url.find("%title%"), static_strlen("%title%"), c_title);
 	
 	CURLcode code;
 	pthread_mutex_lock(&CurlLock);
@@ -247,9 +247,9 @@ void *Lyrics::Get(void *screen_void_ptr)
 	}
 	
 	for (size_t i = result.find("<"); i != std::string::npos; i = result.find("<"))
-		result.replace(i, 4, "<");
+		result.replace(i, static_strlen("&lt;"), "<");
 	for (size_t i = result.find("&gt;"); i != std::string::npos; i = result.find("&gt;"))
-		result.replace(i, 4, ">");
+		result.replace(i, static_strlen("&gt;"), ">");
 	
 	EscapeHtml(result);
 	Trim(result);