hex_tarball (hex_core v0.8.0) View Source

Functions for creating and unpacking Hex tarballs.

Link to this section Summary

Functions

Creates a package tarball.

Creates a docs tarball.

Returns base16-encoded representation of checksum.
Converts an error reason term to a human-readable error message string.

Unpacks a package tarball.

Unpacks a documentation tarball.

Link to this section Types

Specs

checksum() :: binary().

Specs

contents() :: #{filename() => binary()}.

Specs

filename() :: string().

Specs

files() :: [{filename(), filename() | binary()}].

Specs

metadata() :: map().

Specs

tarball() :: binary().

Link to this section Functions

Specs

create(metadata(), files()) ->
          {ok, #{tarball => tarball(), outer_checksum => checksum(), inner_checksum => tarball()}} |
          {error, term()}.
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create(Metadata, Files, Config)

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Specs

create(metadata(), files(), hex_core:config()) ->
          {ok, #{tarball => tarball(), outer_checksum => checksum(), inner_checksum => tarball()}} |
          {error, term()}.

Creates a package tarball.

Returns the binary of the tarball the "inner checksum" and "outer checksum". The inner checksum is deprecated in favor of the outer checksum.

Examples:

  > Metadata = #{<<"name">> => <<"foo">>, <<"version">> => <<"1.0.0">>},
  > Files = [{"src/foo.erl", <<"-module(foo).">>}],
  > hex_tarball:create(Metadata, Files).
  {ok, #{tarball => <<86,69,...>>,
         outer_checksum => <<40,32,...>>,
         inner_checksum => <<178,12,...>>}}

Specs

create_docs(files()) -> {ok, tarball()}.

Specs

create_docs(files(), hex_core:config()) -> {ok, tarball()} | {error, term()}.

Creates a docs tarball.

Examples:

  > Files = [{"doc/index.html", <<"Docs">>}],
  > hex_tarball:create_docs(Files).
  {ok, <<86,69,...>>}
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format_checksum(Checksum)

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Specs

format_checksum(checksum()) -> binary().
Returns base16-encoded representation of checksum.

Specs

format_error(term()) -> string().
Converts an error reason term to a human-readable error message string.

Specs

unpack(tarball(), memory) ->
          {ok,
           #{outer_checksum => checksum(),
             inner_checksum => checksum(),
             metadata => metadata(),
             contents => contents()}} |
          {error, term()};
      (tarball(), filename()) ->
          {ok,
           #{outer_checksum => checksum(), inner_checksum => checksum(), metadata => metadata()}} |
          {error, term()}.
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unpack(Tarball, Output, Config)

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Specs

unpack(tarball(), memory, hex_core:config()) ->
          {ok,
           #{outer_checksum => checksum(),
             inner_checksum => checksum(),
             metadata => metadata(),
             contents => contents()}} |
          {error, term()};
      (tarball(), filename(), hex_core:config()) ->
          {ok,
           #{outer_checksum => checksum(), inner_checksum => checksum(), metadata => metadata()}} |
          {error, term()}.

Unpacks a package tarball.

Remember to verify the outer tarball checksum against the registry checksum returned from hex_repo:get_package(Config, Package).

Examples:

  > hex_tarball:unpack(Tarball, memory).
  {ok,#{outer_checksum => <<...>>,
        contents => [{"src/foo.erl",<<"-module(foo).">>}],
        metadata => #{<<"name">> => <<"foo">>, ...}}}
 
  > hex_tarball:unpack(Tarball, "path/to/unpack").
  {ok,#{outer_checksum => <<...>>,
        metadata => #{<<"name">> => <<"foo">>, ...}}}
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unpack_docs(Tarball, Output)

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Specs

unpack_docs(tarball(), memory) -> {ok, contents()} | {error, term()};
           (tarball(), filename()) -> ok | {error, term()}.
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unpack_docs(Tarball, Output, Config)

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Specs

unpack_docs(tarball(), memory, hex_core:config()) -> {ok, contents()} | {error, term()};
           (tarball(), filename(), hex_core:config()) -> ok | {error, term()}.

Unpacks a documentation tarball.

Examples:

  > hex_tarball:unpack_docs(Tarball, memory).
  {ok, [{"index.html", <<"<!doctype>">>}, ...]}
 
  > hex_tarball:unpack_docs(Tarball, "path/to/unpack").
  ok