#import "HelpCtrl.h"

@implementation HelpCtrl
BOOL resetOnNextWrite=YES;
NSColor *colorNormal, *colorBold, *colorLink;

- (void) awakeFromNib
{
    colorNormal=[NSColor blackColor];
    colorLink=[NSColor blueColor];
    colorBold=[NSColor redColor];
    [helpText setRichText: TRUE];
    [helpText setFont:[NSFont fontWithName:@"Monaco" size:11.0]];
}

- (void) resetHelp {
    [helpWin makeKeyAndOrderFront: self];
    [helpText setString:@""];    
}

char buf[512];
- (void) writeToHelpWindow: (const char*) t length: (int) l {
    NSRange r;

    NSLog(@"writeToHelpWindow (%d bytes)",l);
    if (resetOnNextWrite) {
        [helpText setString:@""];
        resetOnNextWrite=NO;
    }
    
    r.length=0;
    r.location=[[helpText string] length];
    [helpText setEditable: YES];
    {
        int i=0, last=0;
        int tick1=-1;
        while (i<l) {
            //if (t[i]<32) NSLog(@"invalid char: %d (%c)",t[i],t[i]);
            if (t[i]=='`')
                tick1=[[helpText string] length]+i-last;
            if (t[i]==0x27 && tick1>=0) {
                NSRange tr;                
                tr.location=tick1+1;
                tr.length=[[helpText string] length]+i-last-tick1-1;
                [helpText insertText:[NSString stringWithCString:(t+last) length:i-last]];
                [helpText setTextColor:colorLink range:tr];
                last=i;
            }
            if (t[i]=='_' && t[i+1]==8) {
                NSString *s;
                NSRange rg;
                int uc=0;

                if (i>last)
                    [helpText insertText:[NSString stringWithCString:(t+last) length:i-last]];

                rg.location=[[helpText string] length];
                while (t[i]=='_' && t[i+1]==8 && t[i+2] && uc<512) {
                    buf[uc]=t[i+2]; i+=3; uc++;
                }
                rg.length=uc;
                s=[NSString stringWithCString:buf length:uc];
                [helpText insertText:s];
                [helpText setTextColor:colorBold range:rg];

                last=i;
            } else
                i++;
        }
        if (i>last)
            [helpText insertText:[NSString stringWithCString:(t+last) length:i-last]];
    }
    r.location=[[helpText string] length]; r.length=0;
    NSLog(@"writeToHelpWindow txt added.");
    //[helpText setSelectedRange: r];
    //[helpText display];
    //[helpText insertText: @""];
    [helpText setEditable: NO];
    NSLog(@"writeToHelpWindow done.");
}
@end