method

sub_ext

v1_9_3_125 - Show latest stable - Class: Pathname

sub_ext(p1)

public

Return a pathname which the extension of the basename is substituted by repl.

If self has no extension part, repl is appended.

static VALUE
path_sub_ext(VALUE self, VALUE repl)
{
    VALUE str = get_strpath(self);
    VALUE str2;
    long extlen;
    const char *ext;
    const char *p;

    StringValue(repl);
    p = RSTRING_PTR(str);
    ext = ruby_find_extname(p, &extlen);
    if (ext == NULL) {
        ext = p + RSTRING_LEN(str);
    }
    else if (extlen <= 1) {
        ext += extlen;
    }
    str2 = rb_str_dup(str);
    rb_str_resize(str2, ext-p);
    rb_str_append(str2, repl);
    OBJ_INFECT(str2, str);
    return rb_class_new_instance(1, &str2, rb_obj_class(self));
}

sub_ext

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