Replace char in string with some string inplace

Question

i want to replace a character in the string with a string. can i do it in-place? As the new string has length greater than original string.Question is that can i do with

Answer 1

i tried this old-fashioned stuff and i think it works. here it is. i am not sure that this would work on encodings other than ascii.

#include 
#include 

std::string
replace_char_with_string
    (const char *in_p,
     char  from_ch,
     const char *to_p)
{
    char output_c_str[strlen(in_p)*2+1], *out_p = output_c_str;
    int  to_len = strlen(to_p);

    while (*in_p)
    {
        if (*in_p == from_ch)
        {
            strcpy(out_p, to_p);
            out_p += to_len;
        }
        else
        {
            *out_p++ = *in_p;
        }

        ++in_p;
    }
    *out_p = '\0';

    std::string output(output_c_str);
    return output;
}

// example usage
std::string java_namespace_name = "com.foo.boo";
std::string cpp_namespace_name = replace_char_with_string(java_namespace_name.c_str()