uint8 DreamGenContext::getnumber(const Frame *charSet, const uint8 *string, uint16 maxWidth, bool centered, uint16* offset) {
uint8 totalWidth = 0;
uint8 charCount = 0;
while (true) {
uint8 wordTotalWidth, wordCharCount;
uint8 done = getnextword(charSet, string, &wordTotalWidth, &wordCharCount);
string += wordCharCount;
if (done == 1) { //endoftext
ax = totalWidth + wordTotalWidth - 10;
if (ax < maxWidth) {
totalWidth += wordTotalWidth;
charCount += wordCharCount;
}
if (centered) {
ax = (maxWidth & 0xfe) + 2 + 20 - totalWidth;
ax /= 2;
} else {
ax = 0;
}
*offset += ax;
return charCount;
}
ax = totalWidth + wordTotalWidth - 10;
if (ax >= maxWidth) { //gotoverend
if (centered) {
ax = (maxWidth & 0xfe) - totalWidth + 20;
ax /= 2;
} else {
ax = 0;
}
*offset += ax;
return charCount;
}
totalWidth += wordTotalWidth;
charCount += wordCharCount;
}
}
//process a line at a time
//this is the heart of the program
//it takes a line and adds all declared variables to a binary tree
//comments and strings are ignored
struct tnode *processline(char *line, struct tnode *root)
{
while(*line != '\0' && *line != '\n') {
while(isspace(*line)) //skip whitespace
line++;
if(ignore)
line += ignoreend(line); //process if ignore should be switched to 0
else {
int c = specialchar(line); //see if line has any special characters
if(c == BREAK)
break;
else if(c == CONTINUE) {
line++;
continue;
}
if(isalnum(*line)) {
line += getnextword(line);
if(istype(word)) {
line += getnextvar(line);
if(*line == '(') { //if var is actually a function
line++;
while(*line != ')' && *line != '\0')
line++;
}
else //var is a variable not a function
if(var[0] != '\0')
root = addtree(root, var); //add variable to binary tree
}
}
else //if character is not alphanumeric
line++;
}
}
return root;
}