tocamel.c

#include <ctype.h>

/* convert a string in place from dash/underscore delimited format
 * to camel case.  e.g.  this-is-an_example => thisIsAnExample
 */
char* tocamel(char* str)
{
    char* get = str;
    char* put = str;
    char  c;
    int(*transform)(int) = tolower;

    while((c = *(get++)) != '\0') {
        switch(c){
        case '-':
        case '_':
            transform = toupper;
            break;
        default:
            *(put++) = transform(c);
            transform = tolower;
            break;
        }
    }
    *put = '\0';
    return str;
}