Merge branch 'master' of https://github.com/rheit/zdoom

src/resourcefiles/resourcefile.cpp

@@ -95,7 +95,8 @@ void FResourceLump::LumpNameSetup(FString iname)
 {
 	long slash = iname.LastIndexOf('/');
 	FString base = (slash >= 0) ? iname.Mid(slash + 1) : iname;
-	base.Truncate(base.LastIndexOf('.'));
+	auto dot = base.LastIndexOf('.');
+	if (dot >= 0) base.Truncate(dot);
 	uppercopy(Name, base);
 	Name[8] = 0;
 	FullName = iname;

src/serializer.cpp

@@ -162,7 +162,7 @@ static const char *StringToUnicode(const char *cc, int size = -1)
 	int count = 0;
 	int count1 = 0;
 	out.Clear();
-	while (ch = (*c++) & 255)
+	while ((ch = (*c++) & 255))
 	{
 		count1++;
 		if (ch >= 128)
@@ -180,7 +180,7 @@ static const char *StringToUnicode(const char *cc, int size = -1)
 	out.Last() = 0;
 	c = cc;
 	int i = 0;
-	while (ch = (*c++) & 255)
+	while ((ch = (*c++) & 255))
 	{
 		utf8_encode(ch, &out[i], &count1);
 		i += count1;

src/v_video.cpp

@@ -981,8 +981,6 @@ void DFrameBuffer::DrawRateStuff ()
 			int rate_x;
 
 			int textScale = active_con_scale();
-			if (textScale == 0)
-				textScale = CleanXfac;
 
 			chars = mysnprintf (fpsbuff, countof(fpsbuff), "%2u ms (%3u fps)", howlong, LastCount);
 			rate_x = Width / textScale - ConFont->StringWidth(&fpsbuff[0]);

src/zstring.cpp

@@ -342,29 +342,75 @@ FString &FString::operator += (char tail)
 }
 
 FString &FString::AppendCStrPart (const char *tail, size_t tailLen)
+{
+	if (tailLen > 0)
 	{
 		size_t len1 = Len();
 		ReallocBuffer(len1 + tailLen);
 		StrCopy(Chars + len1, tail, tailLen);
+	}
 	return *this;
 }
 
 FString &FString::CopyCStrPart(const char *tail, size_t tailLen)
+{
+	if (tailLen > 0)
 	{
 		ReallocBuffer(tailLen);
 		StrCopy(Chars, tail, tailLen);
+	}
+	else
+	{
+		Data()->Release();
+		NullString.RefCount++;
+		Chars = &NullString.Nothing[0];
+	}
 	return *this;
 }
 
 void FString::Truncate(long newlen)
 {
-	if (newlen >= 0 && newlen < (long)Len())
+	if (newlen <= 0)
+	{
+		Data()->Release();
+		NullString.RefCount++;
+		Chars = &NullString.Nothing[0];
+	}
+	else if (newlen < (long)Len())
 	{
 		ReallocBuffer (newlen);
 		Chars[newlen] = '\0';
 	}
 }
 
+void FString::Remove(size_t index, size_t remlen)
+{
+	if (index < Len())
+	{
+		if (index + remlen >= Len())
+		{
+			Truncate((long)index);
+		}
+		else
+		{
+			remlen = Len() - remlen < remlen ? Len() - remlen : remlen;
+			if (Data()->RefCount == 1)
+			{ // Can do this in place
+				memmove(Chars + index, Chars + index + remlen, Len() - index - remlen);
+				Data()->Len -= (unsigned)remlen;
+			}
+			else
+			{ // Must do it in a copy
+				FStringData *old = Data();
+				AllocBuffer(old->Len - remlen);
+				StrCopy(Chars, old->Chars(), index);
+				StrCopy(Chars + index, old->Chars() + index + remlen, old->Len - index - remlen);
+				old->Release();
+			}
+		}
+	}
+}
+
 FString FString::Left (size_t numChars) const
 {
 	size_t len = Len();
@@ -589,6 +635,10 @@ void FString::StripLeft ()
 		if (!isspace(Chars[i]))
 			break;
 	}
+	if (i == 0)
+	{ // Nothing to strip.
+		return;
+	}
 	if (Data()->RefCount <= 1)
 	{
 		for (j = 0; i <= max; ++j, ++i)
@@ -620,6 +670,10 @@ void FString::StripLeft (const char *charset)
 		if (!strchr (charset, Chars[i]))
 			break;
 	}
+	if (i == 0)
+	{ // Nothing to strip.
+		return;
+	}
 	if (Data()->RefCount <= 1)
 	{
 		for (j = 0; i <= max; ++j, ++i)
@@ -640,11 +694,16 @@ void FString::StripLeft (const char *charset)
 void FString::StripRight ()
 {
 	size_t max = Len(), i;
-	for (i = max; i-- > 0; )
+	if (max == 0) return;
+	for (i = --max; i-- > 0; )
 	{
 		if (!isspace(Chars[i]))
 			break;
 	}
+	if (i == max)
+	{ // Nothing to strip.
+		return;
+	}
 	if (Data()->RefCount <= 1)
 	{
 		Chars[i+1] = '\0';
@@ -668,11 +727,15 @@ void FString::StripRight (const char *charset)
 {
 	size_t max = Len(), i;
 	if (max == 0) return;
-	for (i = max; i-- > 0; )
+	for (i = --max; i-- > 0; )
 	{
 		if (!strchr (charset, Chars[i]))
 			break;
 	}
+	if (i == max)
+	{ // Nothing to strip.
+		return;
+	}
 	if (Data()->RefCount <= 1)
 	{
 		Chars[i+1] = '\0';
@@ -701,6 +764,10 @@ void FString::StripLeftRight ()
 		if (!isspace(Chars[j]))
 			break;
 	}
+	if (i == 0 && j == max - 1)
+	{ // Nothing to strip.
+		return;
+	}
 	if (Data()->RefCount <= 1)
 	{
 		for (k = 0; i <= j; ++i, ++k)
@@ -713,8 +780,8 @@ void FString::StripLeftRight ()
 	else
 	{
 		FStringData *old = Data();
-		AllocBuffer (j - i);
-		StrCopy (Chars, old->Chars(), j - i);
+		AllocBuffer(j - i + 1);
+		StrCopy(Chars, old->Chars(), j - i + 1);
 		old->Release();
 	}
 }
@@ -768,12 +835,14 @@ void FString::Insert (size_t index, const char *instr)
 
 void FString::Insert (size_t index, const char *instr, size_t instrlen)
 {
-	size_t mylen = Len();
-	if (index > mylen)
+	if (instrlen > 0)
 	{
-		index = mylen;
+		size_t mylen = Len();
+		if (index >= mylen)
+		{
+			AppendCStrPart(instr, instrlen);
 		}
-	if (Data()->RefCount <= 1)
+		else if (Data()->RefCount <= 1)
 		{
 			ReallocBuffer(mylen + instrlen);
 			memmove(Chars + index + instrlen, Chars + index, (mylen - index + 1) * sizeof(char));
@@ -789,6 +858,7 @@ void FString::Insert (size_t index, const char *instr, size_t instrlen)
 			old->Release();
 		}
 	}
+}
 
 void FString::ReplaceChars (char oldchar, char newchar)
 {

src/zstring.h

@@ -268,6 +268,7 @@ public:
 	bool IsNotEmpty() const { return Len() != 0; }
 
 	void Truncate (long newlen);
+	void Remove(size_t index, size_t remlen);
 
 	int Compare (const FString &other) const { return strcmp (Chars, other.Chars); }
 	int Compare (const char *other) const { return strcmp (Chars, other); }