method

extname

v1_8_7_330 - Show latest stable - Class: File

extname(p1)

public

Returns the extension (the portion of file name in path after the period).

File.extname("test.rb")         #=> ".rb"
File.extname("a/b/d/test.rb")   #=> ".rb"
File.extname("test")            #=> ""
File.extname(".profile")        #=> ""

/*
 *  call-seq:
 *     File.extname(path) -> string
 *
 *  Returns the extension (the portion of file name in <i>path</i>
 *  after the period).
 *
 *     File.extname("test.rb")         #=> ".rb"
 *     File.extname("a/b/d/test.rb")   #=> ".rb"
 *     File.extname("test")            #=> ""
 *     File.extname(".profile")        #=> ""
 *
 */

static VALUE
rb_file_s_extname(klass, fname)
    VALUE klass, fname;
{
    const char *name, *e;
    long len;
    VALUE extname;

    name = StringValueCStr(fname);
    e = ruby_find_extname(name, &len);
    if (len <= 1)
        return rb_str_new(0, 0);
    extname = rb_str_new(e, len);       /* keep the dot, too! */
    OBJ_INFECT(extname, fname);
    return extname;
}

1Note

File name without the extension

metavida · Jan 27, 20101 thank

To get the file name without the extension you can use File.extname in combination with File.basename

File.basename("test.rb", File.extname("test.rb"))             #=> "test"
File.basename("a/b/d/test.rb", File.extname("a/b/d/test.rb")) #=> "test"
File.basename("test", File.extname("test"))                   #=> "test"
File.basename(".profile", File.extname(".profile"))           #=> ".profile"

extname

1Note

File name without the extension

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