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Question

how to dynamically add the data to html file

Answer 1

A:

I do a lot of this. My best friend here is NSString & Co.

Take a special look at the method stringWithFormat.

For example, here is me setting colors for an html table.

-(NSString *) colorcomponents:(int) i size:(int) s
{
    CGColorRef color = [[coltable objectAtIndex:i] CGColor];
    NSString * tablecompformat = @"<td style=\"background: rgb(%d, %d, %d)\" width=%d height=%d> <b>  </b>  </td>";
    int numComponents = CGColorGetNumberOfComponents(color);

    if (numComponents == 4)
    {
        const CGFloat *components = CGColorGetComponents(color);
        CGFloat red = components[0]*256;
        CGFloat green = components[1]*256;
        CGFloat blue = components[2]*256;

        return [NSString     stringWithFormat:tablecompformat,(int)red,(int)green,(int)blue,s,s];
    }
    return nil;
}

For each of the pieces you build you can add to your main html string using the NSString method appendString. After you have finished building your string you cah save it as a file or eamil it or whatever...

Here is the main routine. It should give you a good idea of how to dynamically build and html string:

-(NSString *) emailstr
{
    NSMutableString * ress=[[NSMutableString alloc] initWithCapacity:100];

    NSString * formatstring=@"<tr><td > <b> %@</b>  </td>  <td>: %@ </td></tr>\n";
    //NSString * formatstring2=@"<tr><td> <b> %@</b>  </td>  <td>: %@ </td> <td>: %@ </td> </tr>\n";
    NSString * hline=@"<tr><td colspan=\"3\">  <hr>  </td>  </tr>\n";

    [ress appendString:@"<html><body>\n"];
    [ress appendString:[NSString stringWithFormat:@"<h3> Game: %@ </h3> \n", [gm name]  ]];

    [ress appendString:@"<table border=\"0\">"];// beginning of main table
    [ress appendString:@"<tr><td > <b> Initial</b>  </td> <td>"];

    [ress appendString:@"<table border=\"0\">"];
    for (int i=0;i<[gm xcount];i++)
    {
        [ress appendString:@"<tr> "];
        for(int j=0;j<[gm ycount];j++)
        {
            int k=[gm getinitpos:i y:j];
            [ress appendString:[self colorcomponents:k size:10]];
        }
        [ress appendString:@"</tr> "];
    }
    [ress appendString:@"</table><br>\n "];
    [ress appendString:@"</td></tr>\n"];

    [ress appendString:@"<tr><td> <b> End</b>  </td> <td>"];
    [ress appendString:@"<table border=\"0\">"];
    for (int i=0;i<[gm xcount];i++)
    {
        [ress appendString:@"<tr> "];
        for(int j=0;j<[gm ycount];j++)
        {
            int k=[gm getpos:i y:j];
            [ress appendString:[self colorcomponents:k size:10]];

        }
        [ress appendString:@"</tr> "];
    }
    [ress appendString:@"</table><br>"];
    [ress appendString:@"</td></tr>\n"];


    [ress appendString:[NSString stringWithFormat:formatstring,@"Rules",[sql getrulesname:[gm rules_id]]]];
    if ([gm step]>0) 
    {
        //[ress appendString:@"<table border=\"0\">"];
        [ress appendString:hline]; 

        for (int i=1; i<=[gm step];i++)
        {
            int x=[sql getlogx:[gm session_id] step:i];
            int y=[sql getlogy:[gm session_id] step:i];

            NSString * pnum = [NSString stringWithFormat:@"Move %d",i];
            NSString * posstring=[NSString stringWithFormat:@"(%d, %d)",x+1,y+1 ];
            [ress appendString:[NSString stringWithFormat:formatstring,pnum,posstring]];
        }
        [ress appendString:hline];
        //[ress appendString:@"</table><br>"];
    }

    [ress appendString:@"</table><br>"]; //end of main table

    [ress appendString:@"</body></html>"];

    return ress;
}

John Smith 2010-10-21 15:13:27

Thanks for this i will try it

lak in iphone 2010-10-21 17:01:29

i am having basic templates for html files,i dont want to create it .. ,i want to access existing html files and add atributes to them..

lak in iphone 2010-10-21 17:50:47

This should give you a good start. Load the file as a string and use string functions to manipulate it. Or have the template built into Objective-C like i have.

John Smith 2010-10-21 23:32:34

how to load file as a string

lak in iphone 2010-10-22 15:02:51

http://stackoverflow.com/questions/1044334/objective-c-reading-a-file-line-by-line

John Smith 2010-10-22 15:10:07

how to add these string to view

lak in iphone 2010-10-22 17:18:29

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how to dynamically add the data to html file

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