method

inplace_mode=

v2_4_6 - Show latest stable - Class: ARGF

inplace_mode=(p1)

public

Sets the filename extension for in-place editing mode to the given String. Each file being edited has this value appended to its filename. The modified file is saved under this new name.

For example:

$ ruby argf.rb file.txt

ARGF.inplace_mode = '.bak'
ARGF.each_line do |line|
  print line.sub("foo","bar")
end

Each line of file.txt has the first occurrence of “foo” replaced with “bar”, then the new line is written out to file.txt.bak.

static VALUE
argf_inplace_mode_set(VALUE argf, VALUE val)
{
    if (rb_safe_level() >= 1 && OBJ_TAINTED(val))
        rb_insecure_operation();

    if (!RTEST(val)) {
        if (ARGF.inplace) free(ARGF.inplace);
        ARGF.inplace = 0;
    }
    else {
        StringValue(val);
        if (ARGF.inplace) free(ARGF.inplace);
        ARGF.inplace = 0;
        ARGF.inplace = strdup(RSTRING_PTR(val));
    }
    return argf;
}

inplace_mode=

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