Base encode/decode¶
decode16(binary, opts \\ [])
¶
Decodes a base 16 encoded string into a binary string.
Options:
The accepted options are:
:case
- specifies the character case to accept when decoding
The values for :case
can be:
:upper
- only allows upper case characters (default):lower
- only allows lower case characters:mixed
- allows mixed case characters
Examples:
iex> Base.decode16("666F6F626172")
{:ok, "foobar"}
iex> Base.decode16("666f6f626172", case: :lower)
{:ok, "foobar"}
iex> Base.decode16("666f6F626172", case: :mixed)
{:ok, "foobar"}
decode32(binary, opts \\ [])
¶
Decodes a base 32 encoded string into a binary string.
Options:
The accepted options are:
:case
- specifies the character case to accept when decoding:padding
- specifies whether to require padding
The values for :case
can be:
:upper
- only allows upper case characters (default):lower
- only allows lower case characters:mixed
- allows mixed case characters
The values for :padding
can be:
true
- requires the input string to be padded to the nearest multiple of 8 (default)false
- ignores padding from the input string
Examples:
iex> Base.decode32("MZXW6YTBOI======")
{:ok, "foobar"}
iex> Base.decode32("mzxw6ytboi======", case: :lower)
{:ok, "foobar"}
iex> Base.decode32("mzXW6ytBOi======", case: :mixed)
{:ok, "foobar"}
iex> Base.decode32("MZXW6YTBOI", padding: false)
{:ok, "foobar"}
decode64(binary, opts \\ [])
¶
Decodes a base 64 encoded string into a binary string.
Accepts ignore: :whitespace
option which will ignore all the
whitespace characters in the input string.
Accepts padding: false
option which will ignore padding from
the input string.
Examples:
iex> Base.decode64("Zm9vYmFy")
{:ok, "foobar"}
iex> Base.decode64("Zm9vYmFy\n", ignore: :whitespace)
{:ok, "foobar"}
iex> Base.decode64("Zm9vYg==")
{:ok, "foob"}
iex> Base.decode64("Zm9vYg", padding: false)
{:ok, "foob"}
encode16(binary, opts \\ [])
¶
Encodes a binary string into a base 16 encoded string.
Options:
The accepted options are:
:case
- specifies the character case to use when encoding
The values for :case
can be:
:upper
- uses upper case characters (default):lower
- uses lower case characters
Examples:
iex> Base.encode16("foobar")
"666F6F626172"
iex> Base.encode16("foobar", case: :lower)
"666f6f626172"
encode32(binary, opts \\ [])
¶
Encodes a binary string into a base 32 encoded string.
Options:
The accepted options are:
:case
- specifies the character case to use when encoding:padding
- specifies whether to apply padding
The values for :case
can be:
:upper
- uses upper case characters (default):lower
- uses lower case characters
The values for :padding
can be:
true
- pad the output string to the nearest multiple of 8 (default)false
- omit padding from the output string
Examples:
iex> Base.encode32("foobar")
"MZXW6YTBOI======"
iex> Base.encode32("foobar", case: :lower)
"mzxw6ytboi======"
iex> Base.encode32("foobar", padding: false)
"MZXW6YTBOI"
encode64(binary, opts \\ [])
¶
Encodes a binary string into a base 64 encoded string.
Accepts padding: false
option which will omit padding from
the output string.
Examples
iex> Base.encode64("foobar")
"Zm9vYmFy"
iex> Base.encode64("foob")
"Zm9vYg=="
iex> Base.encode64("foob", padding: false)
"Zm9vYg"