How to copy text untill newline character?

I have a char array list that contains text from a text file, for example:

this is the first line
this is the second line

I want to have the first line copied to another char array without \n (and/or \r).

I do not know the size of the first line exactly but I do know it is less than 100 bytes.

Snappet of my code:

unsigned char *line;
line = (u_char *)calloc(100, sizeof(char));

//read txt file to list

while(list[0] != '\n'){
    line[0] = list[0];
    list++;
    line++;
}

Unfortunaly line is empty. Note that I know for sure list isn't empty, and contains the text as showed above.

Any suggestions on this code, or another solution? The file is opened using open() and not fopen() so I've to loop through my list array.