Updated the interface for the TStringGetStringRange function. It will now fill a buffer, leaving a null byte at the end, with as many characters as it can depending on the supplied buffer's size.

src/main.c

@@ -7,6 +7,7 @@
 int main(int argc, char** argv) {
     char input[1024] = { 0 };
     char glyph[8] = { 0 };
+    char buffer[11] = { 0 };
     char* file;
     size_t bytesRead;
 
@@ -90,11 +91,12 @@ int main(int argc, char** argv) {
 
                 int count = strtol(input, NULL, 10);
 
-                char* text = TStringGetStringRange(num, count, string);
+                //char* text = TStringGetStringRange(num, count, string);
+                TStringGetStringRange(string, num, count, sizeof buffer, buffer);
 
-                printf("Returned String:\n'%s'\n", text);
+                printf("Returned String:\n'%s'\n", buffer);
-
+                for (int i = 0; i < sizeof buffer; i++) printf("%02X ", buffer[i] & 0xFF);
-                free(text);
+                printf("\n");
 
                 continue;
             }
@@ -102,10 +104,6 @@ int main(int argc, char** argv) {
 
         TStringAppendText(input, string);
     }
-    //fgets(glyph, 10, stdin);
     
-    //glyph[strlen(glyph) - 1] = 0;
-
-    //printf("Width %d byte(s).\n", GetGlyphByteWidth(glyph));
     TStringFree(string);
 }

src/tstring.c

@@ -202,21 +202,11 @@ char* TStringGetString(const TString* string) {
     return text;
 }
 
-char* TStringGetStringRange(int startIndex, int count, const TString* string) {
+void TStringGetStringRange(const TString* string, unsigned int startIndex, unsigned int count, unsigned int bufferSize, char buffer[]) {
-    if (!string) return NULL;
+    if (!string || !buffer) return;
-    if (startIndex < 0 || startIndex >= string->Length) return NULL;
+    if (count > string->Length) return;
-    if (count > string->Length) return NULL;
 
-    char* text = calloc(string->ByteCount + 1, sizeof(char));
+    unsigned int glyphCount = 0, startByte = 0;
-
-    if (!text) {
-        fprintf(stderr, "Failed to calloc memory for TString text. %s.\n", strerror(errno));
-
-        return NULL;
-    }
-
-    unsigned int startByte = 0;
-    unsigned int glyphCount = 0;
     
     while (glyphCount != startIndex) {
         startByte += GetGlyphByteWidth(string->Characters[startByte]);
@@ -226,11 +216,15 @@ char* TStringGetStringRange(int startIndex, int count, const TString* string) {
 
     unsigned int endByte = startByte;
 
-    for (glyphCount = 0; glyphCount < count && endByte <= string->ByteCount; glyphCount++) endByte += GetGlyphByteWidth(string->Characters[endByte]);
+    for(glyphCount = 0; glyphCount < count && endByte <= string->ByteCount && endByte - startByte < bufferSize; glyphCount++) {
+        int width = GetGlyphByteWidth(string->Characters[endByte]);
 
-    memcpy(text, &string->Characters[startByte], endByte - startByte);
+        if (width + endByte - startByte < bufferSize) endByte += width;
+        else break;
+    }
 
-    return text;
+    memset(buffer, 0, bufferSize);
+    memcpy(buffer, &string->Characters[startByte], endByte - startByte);
 }
 
 void TStringGetGlyph(int index, char buffer[8], const TString* string) {

src/tstring.h

@@ -15,8 +15,8 @@ void TStringPrintDetails(const TString* string, int statsOnly);
 void TStringInsertText(const char* text, int index, TString* string);
 void TStringPop(char buffer[8], TString* string);
 void TStringRemoveRange(int startIndex, int count, TString* string);
+void TStringGetStringRange(const TString* string, unsigned int startIndex, unsigned int count, unsigned int bufferSize, char buffer[]);
 char* TStringGetString(const TString* string);
-char* TStringGetStringRange(int startIndex, int count, const TString* string);
 int TStringLength(const TString* string);