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/doc/
/ebin
/rebar.lock
# Elixir Support
/mix.lock
/yamerl-*-contents.tar.gz
*.ez
/rebar3.crashdump

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# yamerl Documentation
* [Features](features.md#yamerl-features)
* [Installation instructions](installation.md#yamerl-installation)
* [Reference Manual](reference-manual#yamerl-reference-manual)
* [User Guide](user-guide#yamerl-user-guide)
* [Alternatives to yamerl](alternatives.md#alternatives-to-yamerl)

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# Alternatives to yamerl
## YAML parsers
* [yamler](https://github.com/goertzenator/yamler):
* Based on libyaml, wrapped in a NIF
* Support YAML 1.1
* Faster than yamerl
* Support Erlang atoms, however, single-quoted scalar are treated as atom, which breaks the YAML specifications
* Don't support Erlang fun()
## JSON parsers
* `mochijson2`, provided by [Mochiweb](https://github.com/mochi/mochiweb):
* A lot faster than yamerl

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# Features
## When to use or not yamerl
### Advantages
* Pure Erlang implementation:
* should scale more easily than a port-driver based implementation;
* won't take the whole VM down in case of a crash.
* YAML 1.2 support, which is not widely supported in many other languages.
### Caveats
* Current implementation is slow, compared to yamler (NIF-based) or any JSON-only parsers.
* Adding schemas is not easy.
* No support for YAML serialization.
## Features + examples
* Support [YAML 1.2](http://www.yaml.org/spec/1.2/spec.html) parsing:
```erlang
yamerl_constr:string("YAML snippet").
```
* Support [YAML 1.1](http://yaml.org/spec/1.1/) parsing:
```erlang
yamerl_constr:string("YAML snippet", [{schema, yaml11}]).
```
* Support [JSON](http://json.org/) parsing:
```erlang
yamerl_constr:string(<<"JSON snippet">>, [{schema, json}]).
```
* Support **Erlang atom** node type, either when tagged as atom, or if autodetected in plain scalars, and, if asked, only if the atom already exists:
```erlang
% Enable support for Erlang atoms.
yamerl_app:set_param(node_mods, [yamerl_node_erlang_atom]),
yamerl_constr:string("!<tag:yamerl,2012:atom> atom").
% Autodetect Erlang atoms in plain scalars.
yamerl_app:set_param(node_mods, [yamerl_node_erlang_atom]),
yamerl_constr:string("atom", [{erlang_atom_autodetection, true}]).
% Atoms must already exist.
yamerl_app:set_param(node_mods, [yamerl_node_erlang_atom]),
yamerl_constr:string("atom", [
{erlang_atom_autodetection, true},
{erlang_atom_only_if_exist, true}
]).
```
* Support **Erlang fun()** node type:
```erlang
% Enable support for Erlang fun().
yamerl_app:set_param(node_mods, [yamerl_node_erlang_fun]),
[Plus_One_Fun] = yamerl_constr:string(<<"!<tag:yamerl,2012:fun> fun(X) -> X + 1 end.">>),
Plus_One_Fun(2). % Return 3.
```
* Provide a **yamler compatibility layer**:
```erlang
% Both calls return the same value.
yaml:load_file("input.yaml", [{schema, yaml_schema_failsafe}]),
yamerl_yamler_compat:load_file("input.yaml", [{schema, yaml_schema_failsafe}])
```
## Alternatives to yamerl
If yamerl doesn't fit your needs, you can read a [list of alternatives](alternatives.md#alternatives-to-yamerl).

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# Installation
## tl;dr
### Using Rebar
1. Take the sources from GitHub and run rebar(1):
```bash
git clone 'https://github.com/yakaz/yamerl.git'
cd yamerl/
rebar compile
```
### Using the Autotools
1. Take the sources from GitHub and generate Autotools files:
```bash
git clone 'https://github.com/yakaz/yamerl.git'
cd yamerl/
autoreconf -vif
```
2. Enter the sources directory and run the usual configure/make/make
install:
```bash
./configure
make
make install
```
The default installation path is your Erlang's distribution libraries
directory.
## Requirements
### Build dependencies
If you're using Rebar:
* rebar
* awk (tested with FreeBSD's awk, mawk and gawk, should work with any
flavor of Awk)
* Erlang/OTP R14B02 or later
If you're using the Autotools:
* autoconf 2.64 or later
* automake 1.11 or later
* awk (tested with FreeBSD's awk, mawk and gawk, should work with any
flavor of Awk)
* make (tested with FreeBSD's make and GNU make, should work with any
flavor of make)
* Erlang/OTP R14B02 or later
### Testsuite dependencies
* Erlang/OTP R14B02 or later
* Perl
* [yamler](https://github.com/goertzenator/yamler) (optional)
### Runtime dependencies
* Erlang/OTP R14B02 or later
## Building using Rebar
A single step is required here:
```bash
rebar compile
```
If you want to run the testsuite:
```bash
rebar eunit
```
## Building using the Autotools
### Generating the Autotools files
> If you use a release tarball, you can skip this step.
You need to generate the Autotools files:
* after a fresh clone of the Git repository;
* each time you modify `configure.ac` or any `Makefile.am`
```bash
autoreconf -vif
```
### Configuring the build
#### Inside sources vs. outside sources
* The simplest method is to run the `configure` script from the sources
directory:
```bash
./configure
```
* The **recommended method** is to run the `configure` script from a
separate directory, in order to keep the sources directory clean:
```bash
# Create and enter a separate directory.
mkdir build-yamerl
cd build-yamerl
# Execute the configure script from this directory; all files are
# created in this directory, not in the sources directory.
/path/to/yamerl-sources/configure
```
#### Changing the install path
The default installation path is your Erlang's distribution libraries
directory, as reported by `code:lib_dir()`. To install in a different
directory (eg. because you do not have sufficient privileges), you can
use the `--prefix` option:
```bash
.../configure --prefix=$HOME/my-erlang-apps
```
#### Using a non-default Erlang distribution
By default, the system Erlang distribution is used by querying `erl(1)`
taken from the `$PATH`. You can specify another Erlang distribution:
* using the `--with-erlang` option to point to the Erlang root directory:
```bash
.../configure --with-erlang=/erlang/root/directory
```
* using the `$ERL` variable to point to the alternate `erl(1)` binary:
```bash
.../configure ERL=/path/to/erl
```
### Compiling
Easy peasy Japanesey!
```bash
make
```
You can use multiple make jobs (ie. using the `-j` option). However
Erlang modules are built using Erlang's `make` application. And, as of
this writing (Erlang R15B03), this application doesn't build modules in
parallel.
If you want to run the testsuite:
```bash
make check
```
## Installing
> Installation is only supported when using the Autotools.
* Simply run:
```bash
make install
```
Note that you may need increased privileges.
* To help mostly packagers, the `$DESTDIR` variable is honored:
```bash
make install DESTDIR=/path/to/fake/root
```

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# yamerl Reference Manual
## Modules
* [`yamerl_constr`](module-yamerl_constr.md)

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# Module: yamerl\_constr
## Functions list
* In-memory string parsing:
* [`string/1`](#function-stringstring)
* [`string/2`](#function-stringstring-options)
* File parsing:
* [`file/1`](#function-filefilename)
* [`file/2`](#function-filefilename-options)
* Stream parsing:
* [`new/1`](#function-newsource)
* [`new/2`](#function-newsource-options)
* [`next_chunk/2`](#function-next_chunkconstr_state-chunk)
* [`next_chunk/3`](#function-next_chunkconstr_state-chunk-last_chunk)
* [`last_chunk/2`](#function-last_chunkconstr_state-chunk)
## Functions reference
### Function: new(Source)
Same as:
```erlang
yamerl_constr:new(Source, []).
```
> See [`new/2`](#function-newsource-options).
### Function: new(Source, Options)
#### Arguments
* `Source`: An arbitrary term describing the source of the data.
* `Options`: A proplist of options:
* `{detailed_constr, boolean()}`: Flag to enable/disable the detailed construction mode (default: `false`).
* `{schema, failsafe | json | core | yaml11}`: Name of the official schema to use (default: `core`).
* `{node_mods, Mods_List}`: List of Erlang modules to extend supported node types (default: `[]`).
#### Description
Create a new construction state.
The returned state is then used in the [next\_chunk/2](#function-next_chunkconstr_state-chunk), [next\_chunk/3](#function-next_chunkconstr_state-chunk-last_chunk) and [last\_chunk/2](#function-last_chunkconstr_state-chunk) functions.
#### Return values & exceptions
If specified options are valid, return a new construction state.
If specified options are invalid, throw an exception.
### Function: next\_chunk(Constr\_State, Chunk)
Same as:
```erlang
yamerl_constr:next_chunk(Constr_State, Chunk, false).
```
> See [`next_chunk/3`](#function-next_chunkconstr_state-chunk-last_chunk).
### Function: next\_chunk(Constr\_State, Chunk, Last\_Chunk)
#### Arguments
* `Constr_State`: A construction state as returned by [new/1](#function-newsource), [new/2](#function-newsource-options), [next\_chunk/2](#function-next_chunkconstr_state-chunk) or [next\_chunk/3](#function-next_chunkconstr_state-chunk-last_chunk).
* `Chunk`: A UTF-8/16/32-encoded binary chunk of a stream containing one or more YAML documents.
* `Last_Chunk`: Flag indicating if the given chunk is the last one or not.
#### Description
Parse the given chunk and return a new construction state or, if last chunk, a list of constructed YAML documents.
The chunk must be an Erlang binary, using the UTF-8, UTF-16 or UTF-32 Unicode encoding. A leading _BOM_ character in the first chunk is used to determine the encoding and endianness. If no BOM is present, UTF-8 is assumed.
#### Return values & exceptions
If parsing succeeds and `Last_Chunk` is `false`, return `{continue, New_Constr_State}`. The `New_Constr_State` must be used for subsequent calls to [next\_chunk/2](#function-next_chunkconstr_state-chunk), [next\_chunk/3](#function-next_chunkconstr_state-chunk-last_chunk) or [last\_chunk/2](#function-last_chunkconstr_state-chunk).
If parsing and construction succeed and `Last_Chunk` is `true`, return a list of documents:
* Basic-terms-based documents are returned if option `{detailed_constr, false}` is set (default);
* Detailed records-based documents are returned if option `{detailed_constr, true}` is set.
If parsing or construction fails, throw an exception.
#### Examples
##### Parse a valid stream
```erlang
Stream_St1 = yamerl_constr:new({file, "<stdin>"}),
{continue, Stream_St2} = yamerl_constr:next_chunk(Stream_St1, <<"He">>),
{continue, Stream_St3} = yamerl_constr:next_chunk(Stream_St2, <<"ll">>),
yamerl_constr:last_chunk(Stream_St3, <<"o!">>).
```
Returns:
```erlang
% List of documents; here, only one.
[
% Document root node: a string.
"Hello!"
].
```
##### Parse an invalid stream
```erlang
Stream_St1 = yamerl_constr:new({file, "<stdin>"}),
{continue, Stream_St2} = yamerl_constr:next_chunk(Stream_St1, <<"'He">>),
{continue, Stream_St3} = yamerl_constr:next_chunk(Stream_St2, <<"ll">>),
yamerl_constr:last_chunk(Stream_St3, <<"o!">>) % Unfinished single-quoted scalar.
```
Throws:
```erlang
{yamerl_exception,
% List of warnings and errors; here, one fatal error.
[
% Error #1.
{yamerl_parsing_error, error,
"Unexpected end-of-stream while parsing flow scalar", % Human-readable message.
1, 8, % Error location.
unexpected_eos,
{yamerl_scalar, 1, 1, {yamerl_tag, 1, 1, {non_specific, "!"}}, % Token being parsed.
flow, single_quoted,
"Hello!"},
[]
}
]
}
```
### Function: last\_chunk(Constr\_State, Chunk)
Same as:
```erlang
yamerl_constr:next_chunk(Constr_State, Chunk, true).
```
> See [`next_chunk/3`](#function-next_chunkconstr_state-chunk-last_chunk).
### Function: string(String)
#### Description
Same as:
```erlang
yamerl_constr:string(String, []).
```
> See [`string/2`](#function-stringstring-options).
### Function: string(String, Options)
#### Arguments
* `String`: A string or UTF-8/16/32-encoded binary containing one or more YAML documents.
* `Options`: A proplist of options; see [`new/2`](#function-newsource-options).
#### Description
Parse the given string and return a list of constructed YAML documents.
The `String` argument can be:
* an Erlang string (ie. list):
```erlang
yamerl_constr:string("This is a string").
```
* a binary using the UTF-8, UTF-16 or UTF-32 Unicode encoding. A leading _BOM_ character is used to determine the encoding and endianness. If no BOM is present, UTF-8 is assumed.
```erlang
yamerl_constr:string(<<50,32,226,130,172>>). % The string "2 €" encoded in UTF-8.
```
#### Return values & exceptions
If parsing and construction succeed, return a list of documents:
* Basic-terms-based documents are returned if option `{detailed_constr, false}` is set (default);
* Detailed records-based documents are returned if option `{detailed_constr, true}` is set.
If parsing or construction fails, throw an exception.
#### Examples
##### Get simple documents
```erlang
yamerl_constr:string("Hello!").
```
Returns:
```erlang
% List of documents; here, only one.
[
% Document root node: a string.
"Hello!"
].
```
##### Get detailed documents
```erlang
yamerl_constr:string("Hello!", [detailed_constr]).
```
Returns:
```erlang
% List of documents; here, only one.
[
% Document #1.
{yamerl_doc,
% Document root node: a string.
{yamerl_str, yamerl_node_str, "tag:yaml.org,2002:str",
[{line, 1}, {column, 1}], % Node location in the original string.
"Hello!" % String value.
}
}
].
```
##### Parse an invalid document
```erlang
yamerl_constr:string(<<"'Oh-oh...">>). % Unfinished single-quoted scalar.
```
Throws an exception:
```erlang
{yamerl_exception,
% List of warnings and errors; here, one fatal error.
[
% Error #1.
{yamerl_parsing_error, error,
"Unexpected end-of-stream while parsing flow scalar", % Human-readable message.
1, 10, % Error location.
unexpected_eos,
{yamerl_scalar, 1, 1, {yamerl_tag, 1, 1, {non_specific, "!"}}, % Token being parsed.
flow, single_quoted,
"Oh-oh..."},
[]
}
]
}.
```
### Function: file(Filename)
#### Description
Same as:
```erlang
yamerl_constr:file(Filename, []).
```
> See [`file/2`](#function-filefilename-options).
### Function: file(Filename, Options)
#### Arguments
* `Filename`: A string containing the filename to parse.
* `Options`: A proplist of options; see [`new/2`](#function-newsource-options).
#### Description
Parse the file indicated by the given filename and return a list of constructed YAML documents.
The file is read by chunk of 4096 bytes (not configurable at this time).
Otherwise, the behavior is the same as [`string/2`](#function-stringstring-options).
> See [`string/2`](#function-stringstring-options) for return values, exceptions and examples.

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# yamerl User Guide
## Recipes
* [Basic parsing](recipe-basic-parsing.md)
* [Error handling](recipe-error-handling.md)

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# Recipe: Basic parsing
1. Start the yamerl application. This is a mandatory step.
```erlang
application:start(yamerl).
```
2. You're now ready to parse a serialized document:
* To parse an in-memory string or binary:
```erlang
Documents = yamerl_constr:string("Hello!").
% Documents is a list of constructed documents.
```
* To parse a file:
```erlang
Documents = yamerl_constr:file("input.yaml").
% Documents is a list of constructed documents.
```
* To parse a stream:
```erlang
% Create a new construction state. The only required argument is an
% arbitrary term describing the source of the data. Here, we use the
% same term structure as yamerl_constr:file/{1, 2}.
Constr_State = yamerl_constr:new({file, "<stdin>"}),
% Feed the parser with binary chunks. The developer is responsible for
% reading the chunk from the underlying source.
%
% The function returns an updated construction state, which replace the
% previous one.
%
% yamerl_constr:next_chunk/2 can be called as many times as possible.
{continue, Constr_State2} = yamerl_constr:next_chunk(Constr_State, Chunk),
% When the last chunk is reached, call yamerl_constr:last_chunk/2.
Documents = yamerl_constr:last_chunk(Constr_State2, Last_Chunk).
% Documents is a list of constructed documents.
```
> For further informations, see:
> * [yamerl\_constr module reference](../reference-manual/module-yamerl_constr.md);

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# Recipe: Error handling
yamerl **throws an exception when an error occurs**.
1. Start the yamerl application. This is a mandatory step.
```erlang
application:start(yamerl).
```
2. You're now ready to parse a serialized document:
* To parse an in-memory string or binary:
```erlang
-include_lib("yamerl/include/yamerl_errors.hrl").
% ...
try
Documents = yamerl_constr:string("Hello!"),
% Documents is a list of constructed documents.
Documents
catch
throw:#yamerl_exception{errors = Errors} ->
% Do something with the exception.
Errors
end.
```
As you can see, the `#yamerl_exception{}` record embeds all encountered errors:
```erlang
#yamerl_exception{
errors = [] % List of errors.
}.
```
Errors are records where the two first members are always:
1. `type`, either `error` or `warning`;
2. `text`, a human-readable error message.
Following members depend on the error record. Two records are currently defined:
* `#yamerl_invalid_option{}`;
* `#yamerl_parsing_error{}`.
> For further informations, see:
> * [yamerl\_constr module reference](../reference-manual/module-yamerl_constr.md);

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@author Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
@copyright
2012-2014 Yakaz,
2016 Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
@doc
== Introduction ==
YAML is a human-friendly data serialization format. The specification
for this language and many examples are available from the <a
href="http://www.yaml.org/">Official YAML web site</a>. You may also
want to check the <a href="http://en.wikipedia.org/wiki/YAML">YAML
Wikipedia article</a>.
<strong>`yamerl'</strong> is a pure <a
href="http://www.erlang.org/">Erlang application</a> which is able
to parse <a href="http://yaml.org/spec/1.1/">YAML 1.1</a> and <a
href="http://www.yaml.org/spec/1.2/spec.html">YAML 1.2</a> documents, as
well as <a href="http://json.org/">JSON</a> documents. It only depends
on standard Erlang/OTP applications; no external dependency is required.
It doesn't use native code either (neither port drivers nor NIFs). At
this time, it has no support to serialize a YAML document.
`yamerl' is distributed under the terms of the <strong>2-clause BSD
license</strong>; see `COPYING'.
== When to use yamerl or not ==
=== Advantages ===
<ul>
<li>Pure Erlang implementation:
<ul>
<li>should scale more easily than a port-driver based implementation;</li>
<li>won't take the whole VM down in case of a crash.</li>
</ul></li>
<li>YAML 1.2 support, which is not widely supported in many other languages.</li>
</ul>
=== Caveats ===
<ul>
<li>Current implementation is slow, compared to yamler (NIF-based) or any JSON-only parsers.</li>
<li>Adding schemas is not easy.</li>
<li>No support for YAML serialization.</li>
</ul>
== Features ==
<ul>
<li>Supports <a href="http://www.yaml.org/spec/1.2/spec.html">YAML 1.2</a> parsing:
```
yamerl_constr:string("YAML snippet").
'''</li>
<li>Supports <a href="http://yaml.org/spec/1.1/">[YAML 1.1</a> parsing:
```
yamerl_constr:string("YAML snippet", [{schema, yaml11}]).
'''</li>
<li>Supports <a href="http://json.org/">JSON</a> parsing:
```
yamerl_constr:string(<<"JSON snippet">>, [{schema, json}]).
'''</li>
<li>Supports <strong>Erlang atom</strong> node type, either when tagged
as atom, or if autodetected in plain scalars, and, if asked, only if the
atom already exists:
```
% Enable support for Erlang atoms.
yamerl_app:set_param(node_mods, [yamerl_node_erlang_atom]),
yamerl_constr:string("!<tag:yamerl,2012:atom> atom").
% Autodetect Erlang atoms in plain scalars.
yamerl_app:set_param(node_mods, [yamerl_node_erlang_atom]),
yamerl_constr:string("atom", [{erlang_atom_autodetection, true}]).
% Atoms must already exist.
yamerl_app:set_param(node_mods, [yamerl_node_erlang_atom]),
yamerl_constr:string("atom", [
{erlang_atom_autodetection, true},
{erlang_atom_only_if_exist, true}
]).
'''</li>
<li>Supports <strong>Erlang fun()</strong> node type:
```
% Enable support for Erlang fun().
yamerl_app:set_param(node_mods, [yamerl_node_erlang_fun]),
[Plus_One_Fun] = yamerl_constr:string(<<"!<tag:yamerl,2012:fun> fun(X) -> X + 1 end.">>),
Plus_One_Fun(2). % Return 3.
'''</li>
<li>Provides a <strong>yamler compatibility layer</strong>:
```erlang
% Both calls return the same value.
yaml:load_file("input.yaml", [{schema, yaml_schema_failsafe}]),
yamerl_yamler_compat:load_file("input.yaml", [{schema, yaml_schema_failsafe}])
'''</li>
</ul>
== Prerequisites ==
Before using yamerl, the application must be started:
```
application:start(yamerl).
'''
This is required so that application environment variables are available.
Now, you can use the {@link yamerl_constr} module to parse and construct a
list of documents from:
<ul>
<li>an in-memory document (string or binary);</li>
<li>a regular file;</li>
<li>a stream.</li>
</ul>
Because a YAML input stream may contain multiple documents, {@link
yamerl_constr} always returns a list of documents, even if the input
stream only contains one.
== Examples ==
=== Basic parsing ===
<ol>
<li>Start the yamerl application. This is a mandatory step.
```
application:start(yamerl).
'''</li>
<li>You're now ready to parse a serialized document:
<ul>
<li>To parse an in-memory string or binary:
```
Documents = yamerl_constr:string("Hello!").
% Documents is a list of constructed documents.
'''</li>
<li>To parse a file:
```
Documents = yamerl_constr:file("input.yaml").
% Documents is a list of constructed documents.
'''</li>
<li>To parse a stream:
```
% Create a new construction state. The only required argument is an
% arbitrary term describing the source of the data. Here, we use the
% same term structure as yamerl_constr:file/{1, 2}.
Constr_State = yamerl_constr:new({file, "<stdin>"}),
% Feed the parser with binary chunks. The developer is responsible for
% reading the chunk from the backing source.
%
% The function returns an updated construction state, which replaces the
% previous one.
%
% yamerl_constr:next_chunk/2 can be called as many times as necessary.
{continue, Constr_State2} = yamerl_constr:next_chunk(Constr_State, Chunk),
% When the last chunk is reached, call yamerl_constr:last_chunk/2.
Documents = yamerl_constr:last_chunk(Constr_State2, Last_Chunk).
% Documents is a list of constructed documents.
'''</li>
</ul></li>
</ol>
See {@link yamerl_constr} for more informations.
=== Error handling ===
yamerl <strong>throws an exception when an error occurs</strong>.
<ol>
<li>Start the yamerl application. This is a mandatory step.
```
application:start(yamerl).
'''</li>
<li>You're now ready to parse a serialized document. To parse an
in-memory string or binary:
```
-include_lib("yamerl/include/yamerl_errors.hrl").
% ...
try
Documents = yamerl_constr:string("Hello!"),
% Documents is a list of constructed documents.
Documents
catch
throw:#yamerl_exception{errors = Errors} ->
% Do something with the exception.
Errors
end.
'''</li>
</ol>
As you can see, the `#yamerl_exception{}' record embeds all encountered
errors:
```
#yamerl_exception{
errors = [] % List of errors.
}.
'''
Errors are records where the two first members are always:
<ol>
<li>`type', either `error' or `warning';</li>
<li>`text', a human-readable error message.</li>
</ol>
Following members depend on the error record. Two records are currently
defined:
<ul>
<li>`#yamerl_invalid_option{}';</li>
<li>`#yamerl_parsing_error{}'.</li>
</ul>
See {@link yamerl_constr} for more informations.
== Alternatives to yamerl ==
=== YAML parsers ===
<ul>
<li><a href="https://github.com/goertzenator/yamler">yamler</a>:
<ul>
<li>Based on libyaml, wrapped in a NIF</li>
<li>Supports YAML 1.1</li>
<li>Faster than yamerl</li>
<li>Supports Erlang atoms, however, single-quoted scalar are treated as
atom, which breaks the YAML specifications</li>
<li>Doesn't support Erlang fun()</li>
</ul></li>
</ul>
=== JSON parsers ===
There are too many to choose from now to list them here. Use your
preferred search engine :-)

15
src/yamerl.erl
View File

@ -24,6 +24,13 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @author Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%% @copyright
%% 2012-2014 Yakaz,
%% 2016 Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%%
%% @doc Wrappers for common uses of {@link yamerl_constr}.
-module(yamerl).
-include("yamerl_nodes.hrl").
@ -44,6 +51,8 @@
%% All those functions are only wrapper above yamerl_constr common
%% functions. The purpose is just to avoid some typing.
%% @equiv yamerl_constr:string(String)
-spec decode(String) ->
Result | no_return() when
String :: unicode_data(),
@ -54,6 +63,8 @@
decode(String) ->
yamerl_constr:string(String).
%% @equiv yamerl_constr:string(String, Options)
-spec decode(String, Options) ->
Result | no_return() when
String :: unicode_data(),
@ -67,6 +78,8 @@ decode(String) ->
decode(String, Options) ->
yamerl_constr:string(String, Options).
%% @equiv yamerl_constr:file(Filename)
-spec decode_file(Filename) ->
Result | no_return() when
Filename :: string(),
@ -77,6 +90,8 @@ decode(String, Options) ->
decode_file(Filename) ->
yamerl_constr:file(Filename).
%% @equiv yamerl_constr:file(Filename, Options)
-spec decode_file(Filename, Options) ->
Result | no_return() when
Filename :: string(),

2
src/yamerl_app.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_app).
-behaviour(application).

331
src/yamerl_constr.erl
View File

@ -24,6 +24,64 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @author Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%% @copyright
%% 2012-2014 Yakaz,
%% 2016 Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%%
%% @doc {@module} implements a YAML constructor. It uses {@link
%% yamerl_parser} as the underlying parser. The parser emits YAML nodes
%% which are assembled as structured YAML documents by the constructor.
%%
%% It is able to construct YAML documents from in-memory strings (see
%% {@link string/1} and {@link string/2}), regular files (see {@link
%% file/1} and {@link file/2}) or streams (see {@link new/1}, {@link
%% new/2} and {@link next_chunk/3}).
%%
%% YAML documents can be constructed in simple or detailed modes. In
%% simple mode, they are made of simple builting Erlang types. In
%% detailed mode, they are made of records, holding more informations
%% about YAML nodes and their presentation.
%%
%% The `yamerl' application must be started to use the constructor.
%%
%% <strong>Example: parse a string in simple mode</strong>
%% ```
%% yamerl_constr:string("Hello!").
%% '''
%%
%% It returns:
%% ```
%% % List of documents; here, only one.
%% [
%% % Document root node: a string.
%% "Hello!"
%% ].
%% '''
%%
%% <strong>Example: parse a stream in detailed mode</strong>
%% ```
%% Stream_St1 = yamerl_constr:new({file, "<stdin>"}, [{detailed_constr, true}]),
%% {continue, Stream_St2} = yamerl_constr:next_chunk(Stream_St1, <<"He">>),
%% {continue, Stream_St3} = yamerl_constr:next_chunk(Stream_St2, <<"ll">>),
%% yamerl_constr:last_chunk(Stream_St3, <<"o!">>).
%% '''
%%
%% It returns:
%% ```
%% % List of documents; here, only one.
%% [
%% % Document #1.
%% {yamerl_doc,
%% % Document root node: a string.
%% {yamerl_str, yamerl_node_str, "tag:yaml.org,2002:str",
%% [{line, 1}, {column, 1}], % Node location in the original string.
%% "Hello!" % String value.
%% }
%% }
%% ].
%% '''
-module(yamerl_constr).
-include("yamerl_errors.hrl").
@ -96,6 +154,8 @@
%% Public API: chunked stream scanning.
%% -------------------------------------------------------------------
%% @equiv new(Source, [])
-spec new(Source) ->
Constr | no_return() when
Source :: term(),
@ -104,29 +164,141 @@
new(Source) ->
new(Source, []).
%% @doc Creates and returns a new YAML construction state.
%%
%% When you want to parse a stream (as opposed to in-memory strings or
%% regular files), this is the first function you call before feeding
%% the constructor with stream "chunks".
%%
%% `Source' can be any term describing the stream. {@link string/1} and
%% {@link string/2} sets it to the atom `string'. {@link file/1} and
%% {@link file/2} sets it to `{file, Filename}'. The constructor doesn't
%% use that value.
%%
%% `Options' is a list of options for the parser and the constructor.
%% Valid options are:
%%
%% <dl>
%% <dt>`{detailed_constr, boolean()}'</dt>
%% <dd>Flag to enable/disable the detailed construction mode. In simple
%% construction mode, YAML nodes are returned as Erlang integers,
%% strings, lists, proplists, etc. In other words, only simple builtin
%% types. In detailed construction mode, YAML nodes are returned using
%% records. Those records gives additional informations such as the YAML
%% node type, the location in the stream (line and column number) and so
%% on.</dd>
%% <dd>Default: `false'</dd>
%% <dt>`{schema, failsafe | json | core | yaml11}'</dt>
%% <dd>Name of the official schema to use.</dd>
%% <dd>Default: `core'.</dd>
%% <dt>`{node_mods, Mods_List}'</dt>
%% <dd>List of Erlang modules to extend support node types.</dd>
%% <dd>Default: `[]'.</dd>
%% </dl>
%%
%% The returned state is opaque value. You then pass it to {@link
%% next_chunk/2}, {@link next_chunk/3} and {@link last_chunk/2}.
%%
%% If an option is invalid, an exception is thrown.
%%
%% <strong>Example: parse a valid stream</strong>
%% ```
%% Stream_St1 = yamerl_constr:new({file, "<stdin>"}),
%% {continue, Stream_St2} = yamerl_constr:next_chunk(Stream_St1, <<"He">>),
%% {continue, Stream_St3} = yamerl_constr:next_chunk(Stream_St2, <<"ll">>),
%% yamerl_constr:last_chunk(Stream_St3, <<"o!">>).
%% '''
%% It returns:
%%
%% ```
%% % List of documents; here, only one.
%% [
%% % Document root node: a string.
%% "Hello!"
%% ].
%% '''
%%
%% <strong>Example: parse an invalid stream</strong>
%% ```
%% Stream_St1 = yamerl_constr:new({file, "<stdin>"}),
%% {continue, Stream_St2} = yamerl_constr:next_chunk(Stream_St1, <<"'He">>),
%% {continue, Stream_St3} = yamerl_constr:next_chunk(Stream_St2, <<"ll">>),
%% yamerl_constr:last_chunk(Stream_St3, <<"o!">>) % Unfinished single-quoted scalar.
%% '''
%%
%% It throws:
%% ```
%% {yamerl_exception,
%% % List of warnings and errors; here, one fatal error.
%% [
%% % Error #1.
%% {yamerl_parsing_error, error,
%% "Unexpected end-of-stream while parsing flow scalar", % Human-readable message.
%% 1, 8, % Error location.
%% unexpected_eos,
%% {yamerl_scalar, 1, 1, {yamerl_tag, 1, 1, {non_specific, "!"}}, % Token being parsed.
%% flow, single_quoted,
%% "Hello!"},
%% []
%% }
%% ]
%% }
%% '''
%%
%% @see new/1.
-spec new(Source, Options) ->
Constr | no_return() when
Source :: term(),
Options :: [
yamerl_constr_option() |
yamerl_parser:yamerl_parser_option() |
proplists:property()
],
Constr :: yamerl_parser:yamerl_parser().
Constr | no_return() when
Source :: term(),
Options :: [
yamerl_constr_option() |
yamerl_parser:yamerl_parser_option() |
proplists:property()
],
Constr :: yamerl_parser:yamerl_parser().
new(Source, Options) ->
Parser_Options = initialize(Options),
yamerl_parser:new(Source, Parser_Options).
Parser_Options = initialize(Options),
yamerl_parser:new(Source, Parser_Options).
%% @equiv next_chunk(Constr, Chunk, false)
-spec next_chunk(Constr, Chunk) ->
Ret | no_return() when
Constr :: yamerl_parser:yamerl_parser(),
Chunk :: unicode_binary(),
Ret :: {continue, New_Constr},
New_Constr :: yamerl_parser:yamerl_parser().
Ret | no_return() when
Constr :: yamerl_parser:yamerl_parser(),
Chunk :: unicode_binary(),
Ret :: {continue, New_Constr},
New_Constr :: yamerl_parser:yamerl_parser().
next_chunk(Constr, Chunk) ->
next_chunk(Constr, Chunk, false).
next_chunk(Constr, Chunk, false).
%% @doc Feeds the constructor with the next chunk from the YAML stream.
%%
%% `Constr' is the constructor state returned by a previous call
%% to {@link new/1}, {@link new/2}, {@link next_chunk/2} or {@link
%% next_chunk/3}.
%%
%% `Chunk' must be an Erlang binary using the UTF-8, UTF-16 or UTF-32
%% Unicode encoding. A leading BOM character in the first chunk is used
%% to determine the encoding and endianness. If no BOM is present, UTF-8
%% is assumed.
%%
%% `EOS' indicates the constructor if this is the last chunk from the
%% stream.
%%
%% If this is not the last chunk (`EOS = false'), it returns `{continue,
%% New_Constr}' where `New_Constr' is an updated state which replaces
%% `Constr'. The new state is to be passed to future calls to {@link
%% next_chunk/2}, {@link next_chunk/3} or {@link last_chunk/2}.
%%
%% If this is the last chunk (`EOS = true'), it returns a list of YAML
%% documents. Documents are made of simple builtin Erlang types if the
%% detailed construction mode is disabled, or records if the detailed
%% construction mode is enabled (`{detailed_constr, boolean()}' passed
%% as an option; default is `false').
%%
%% It throws an exception if there is a parsing or construction error.
-spec next_chunk(Constr, Chunk, false) ->
Ret | no_return() when
@ -148,6 +320,8 @@ next_chunk(Constr, Chunk, EOS) ->
true -> Ret
end.
%% @equiv next_chunk(Constr, Chunk, true)
-spec last_chunk(Constr, Chunk) ->
Result | no_return() when
Constr :: yamerl_parser:yamerl_parser(),
@ -179,6 +353,8 @@ get_docs(Constr) ->
%% Public API: common stream sources.
%% -------------------------------------------------------------------
%% @equiv string(String, [])
-spec string(String) ->
Result | no_return() when
String :: unicode_data(),
@ -189,6 +365,89 @@ get_docs(Constr) ->
string(String) ->
string(String, []).
%% @doc Constructs a YAML document from an in-memory YAML string.
%%
%% `String' must be an Erlang list or binary containing one or more YAML
%% documents. If it is a binary, it must be encoded using UTF-8, UTF-16
%% or UTF-32. A leading BOM character is used to determine the encoding
%% and endianness. If no BOM is present, UTF-8 is assumed.
%%
%% `Options' is a list of options for the parser and the constructor.
%% See {@link new/2} for valid options.
%%
%% It returns a list of YAML documents. See {@link next_chunk/3} for
%% more details about the returned documents.
%%
%% It throws an exception if there is a parsing or construction error.
%%
%% <strong>Example: parse an Erlang list</strong>
%% ```
%% yamerl_constr:string("This is a string").
%% '''
%%
%% <strong>Example: parse an UTF-8-encoded Erlang binary</strong>
%% ```
%% yamerl_constr:string(<<50,32,226,130,172>>). % The string "2 €" encoded in UTF-8.
%% '''
%%
%% <strong>Example: parse a string in simple mode</strong>
%% ```
%% yamerl_constr:string("Hello!").
%% '''
%%
%% It returns:
%% ```
%% % List of documents; here, only one.
%% [
%% % Document root node: a string.
%% "Hello!"
%% ].
%% '''
%%
%% <strong>Example: parse a string in detailed mode</strong>
%% ```
%% yamerl_constr:string("Hello!", [{detailed_constr, true}]).
%% '''
%%
%% It returns:
%% ```
%% % List of documents; here, only one.
%% [
%% % Document #1.
%% {yamerl_doc,
%% % Document root node: a string.
%% {yamerl_str, yamerl_node_str, "tag:yaml.org,2002:str",
%% [{line, 1}, {column, 1}], % Node location in the original string.
%% "Hello!" % String value.
%% }
%% }
%% ].
%% '''
%%
%% <strong>Example: parse an invalid document</strong>
%% ```
%% yamerl_constr:string(<<"'Oh-oh...">>). % Unfinished single-quoted scalar.
%% '''
%%
%% It throws:
%% ```
%% {yamerl_exception,
%% % List of warnings and errors; here, one fatal error.
%% [
%% % Error #1.
%% {yamerl_parsing_error, error,
%% "Unexpected end-of-stream while parsing flow scalar", % Human-readable message.
%% 1, 10, % Error location.
%% unexpected_eos,
%% {yamerl_scalar, 1, 1, {yamerl_tag, 1, 1, {non_specific, "!"}}, % Token being parsed.
%% flow, single_quoted,
%% "Oh-oh..."},
%% []
%% }
%% ]
%% }.
%% '''
-spec string(String, Options) ->
Result | no_return() when
String :: unicode_data(),
@ -211,9 +470,28 @@ string(String, Options) ->
| [yamerl_simple_doc()]
| term().
%% @equiv file(Filename, [])
file(Filename) ->
file(Filename, []).
%% @doc Constructs a YAML document from a regular file.
%%
%% `Filename' must be a string indicating the filename. The file must
%% contain one or more YAML documents. The file must be encoded using
%% UTF-8, UTF-16 or UTF-32. A leading BOM character is used to determine
%% the encoding and endianness. If no BOM is present, UTF-8 is assumed.
%%
%% `Options' is a list of options for the parser and the constructor.
%% See {@link new/2} for valid options.
%%
%% It returns a list of YAML documents. See {@link next_chunk/3} for
%% more details about the returned documents.
%%
%% It throws an exception if there is a parsing or construction error.
%%
%% See {@link string/2} for some examples.
-spec file(Filename, Options) ->
Result | no_return() when
Filename :: string(),
@ -233,6 +511,13 @@ file(Filename, Options) ->
%% Presentation details.
%% -------------------------------------------------------------------
%% @doc Returns presentation informations in the stream for the given
%% node.
%%
%% This only makes sense when the detailed construction mode is enabled
%% (ie. `{detailed_constr, true}' was passed as an option to {@link
%% new/2}, {@link file/2} or {@link string/2}).
get_pres_details(Token) ->
Line = ?TOKEN_LINE(Token),
Column = ?TOKEN_COLUMN(Token),
@ -242,12 +527,24 @@ get_pres_details(Token) ->
%% Node informations.
%% -------------------------------------------------------------------
%% @doc Returns the line number in the stream for the given node.
%%
%% This only makes sense when the detailed construction mode is enabled
%% (ie. `{detailed_constr, true}' was passed as an option to {@link
%% new/2}, {@link file/2} or {@link string/2}).
node_line(Node) ->
case node_pres(Node) of
undefined -> undefined;
Pres -> proplists:get_value(line, Pres)
end.
%% @doc Returns the column number in the stream for the given node.
%%
%% This only makes sense when the detailed construction mode is enabled
%% (ie. `{detailed_constr, true}' was passed as an option to {@link
%% new/2}, {@link file/2} or {@link string/2}).
node_column(Node) ->
case node_pres(Node) of
undefined -> undefined;
@ -553,6 +850,8 @@ filter_options2([], _, _, Constr_Options, Parser_Options, Ext_Options) ->
lists:reverse(Ext_Options)
}.
%% @private
option_names() ->
[
node_mods,

2
src/yamerl_errors.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_errors).
-include("yamerl_errors.hrl").

2
src/yamerl_node_bool.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_bool).
-include("yamerl_tokens.hrl").

2
src/yamerl_node_bool_ext.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_bool_ext).
-include("yamerl_tokens.hrl").

2
src/yamerl_node_bool_json.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_bool_json).
-include("yamerl_tokens.hrl").

2
src/yamerl_node_erlang_atom.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_erlang_atom).
-include("yamerl_errors.hrl").

2
src/yamerl_node_erlang_fun.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_erlang_fun).
-include("yamerl_errors.hrl").

2
src/yamerl_node_float.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_float).
-include("yamerl_errors.hrl").

2
src/yamerl_node_float_ext.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_float_ext).
-include("yamerl_errors.hrl").

2
src/yamerl_node_float_json.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_float_json).
-include("yamerl_errors.hrl").

2
src/yamerl_node_int.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_int).
-include("yamerl_errors.hrl").

2
src/yamerl_node_int_ext.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_int_ext).
-include("yamerl_errors.hrl").

2
src/yamerl_node_int_json.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_int_json).
-include("yamerl_errors.hrl").

2
src/yamerl_node_ipaddr.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_ipaddr).
-include("yamerl_errors.hrl").

2
src/yamerl_node_map.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_map).
-include("yamerl_errors.hrl").

2
src/yamerl_node_null.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_null).
-include("yamerl_tokens.hrl").

2
src/yamerl_node_null_json.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_null_json).
-include("yamerl_tokens.hrl").

2
src/yamerl_node_seq.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_seq).
-include("yamerl_errors.hrl").

2
src/yamerl_node_size.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_size).
-include("yamerl_errors.hrl").

2
src/yamerl_node_str.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_str).
-include("yamerl_errors.hrl").

2
src/yamerl_node_str_json.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_str_json).
-include("yamerl_errors.hrl").

2
src/yamerl_node_timestamp.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_node_timestamp).
-include("yamerl_errors.hrl").

34
src/yamerl_parser.erl
View File

@ -24,6 +24,16 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @author Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%% @copyright
%% 2012-2014 Yakaz,
%% 2016 Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%%
%% @doc {@module} implements a YAML parser. It is not meant to be used
%% directly. Instead, you should use {@link yamerl_constr}.
%%
%% The `yamerl' application must be started to use the parser.
-module(yamerl_parser).
-include("yamerl_errors.hrl").
@ -276,6 +286,8 @@
%% Public API: chunked stream scanning.
%% -------------------------------------------------------------------
%% @equiv new(Source, [])
-spec new(Source) ->
Parser | no_return() when
Source :: term(),
@ -284,6 +296,8 @@
new(Source) ->
new(Source, []).
%% @doc Creates and returns a new YAML parser state.
-spec new(Source, Options) ->
Parser | no_return() when
Source :: term(),
@ -300,6 +314,8 @@ new(Source, Options) ->
token_fun = proplists:get_value(token_fun, Options0, acc)
}.
%% @equiv next_chunk(Parser, Chunk, false)
-spec next_chunk(Parser, Chunk) ->
Ret | no_return() when
Parser :: yamerl_parser(),
@ -310,6 +326,8 @@ new(Source, Options) ->
next_chunk(Parser, Chunk) ->
next_chunk(Parser, Chunk, false).
%% @doc Feeds the parser with the next chunk from the YAML stream.
-spec next_chunk(Parser, Chunk, Last_Chunk) ->
Ret | no_return() when
Parser :: yamerl_parser(),
@ -331,6 +349,8 @@ next_chunk(#yamerl_parser{raw_data = Data} = Parser, Chunk, EOS) ->
},
decode_unicode(Parser1).
%% @equiv next_chunk(Parser, Chunk, true)
-spec last_chunk(Parser, Chunk) ->
Ret | no_return() when
Parser :: yamerl_parser(),
@ -345,6 +365,8 @@ last_chunk(Parser, Chunk) ->
%% Public API: common stream sources.
%% -------------------------------------------------------------------
%% @equiv string(String, [])
-spec string(String) ->
Parser | no_return() when
String :: unicode_data(),
@ -353,6 +375,8 @@ last_chunk(Parser, Chunk) ->
string(String) ->
string(String, []).
%% @doc Parses a YAML document from an in-memory YAML string.
-spec string(String, Options) ->
Parser | no_return() when
String :: unicode_data(),
@ -365,6 +389,8 @@ string(String, Options) when is_binary(String) ->
string(String, Options) when is_list(String) ->
string(unicode:characters_to_binary(String), Options).
%% @equiv file(Filename, [])
-spec file(Filename) ->
Parser | no_return() when
Filename :: string(),
@ -373,6 +399,8 @@ string(String, Options) when is_list(String) ->
file(Filename) ->
file(Filename, []).
%% @doc Parses a YAML document from a regular file.
-spec file(Filename, Options) ->
Parser | no_return() when
Filename :: string(),
@ -440,9 +468,13 @@ file2(#yamerl_parser{source = {file, Filename}} = Parser, FD, Blocksize) ->
%% Public API: get/set the token function.
%% -------------------------------------------------------------------
%% @doc Returns the constructor callback function
get_token_fun(#yamerl_parser{token_fun = Fun}) ->
Fun.
%% @doc Sets the constructor callback function
set_token_fun(Parser, Fun) when is_function(Fun, 1) ->
Parser#yamerl_parser{token_fun = Fun}.
@ -4203,6 +4235,8 @@ setup_default_tags(#yamerl_parser{options = Options} = Parser) ->
%% Internal functions.
%% -------------------------------------------------------------------
%% @private
option_names() ->
[
default_tags,

2
src/yamerl_sup.erl
View File

@ -24,6 +24,8 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @private
-module(yamerl_sup).
-behaviour(supervisor).

24
src/yamerl_yamler_compat.erl
View File

@ -24,6 +24,16 @@
% OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
% SUCH DAMAGE.
%% @author Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%% @copyright
%% 2012-2014 Yakaz,
%% 2016 Jean-Sébastien Pédron <jean-sebastien.pedron@dumbbell.fr>
%%
%% @doc {@module} implements the <em>yamerl</em> API above {@link
%% yamerl_constr}.
%%
%% See <em>yamler</em> documentation: [https://github.com/goertzenator/yamler].
-module(yamerl_yamler_compat).
-include("yamerl_errors.hrl").
@ -50,6 +60,8 @@
%% Public API.
%% -------------------------------------------------------------------
%% @equiv load(String, [])
-spec load(String) ->
Result | Error when
String :: binary(),
@ -60,6 +72,10 @@
load(String) ->
load(String, []).
%% @doc Constructs a YAML document from an in-memory string.
%%
%% The `yamerl' application must be started to use this wrapper.
-spec load(String, Options) ->
Result | Error when
String :: binary(),
@ -78,6 +94,8 @@ load(String, Options) ->
format_error(Error)
end.
%% @equiv load_file(Filename, [])
-spec load_file(Filename) ->
Result | Error when
Filename :: string(),
@ -88,6 +106,8 @@ load(String, Options) ->
load_file(Filename) ->
load_file(Filename, []).
%% @doc Constructs a YAML document from a regular file.
-spec load_file(Filename, Options) ->
Result | Error when
Filename :: string(),
@ -106,6 +126,8 @@ load_file(Filename, Options) ->
format_error(Error)
end.
%% @private
-spec convert_options(Options) ->
Converted when
Options :: [yamler_option()],
@ -118,6 +140,8 @@ load_file(Filename, Options) ->
convert_options(Options) ->
convert_options(Options, []).
%% @private
convert_options([{schema, yaml_schema_failsafe} | Rest], Converted) ->
Converted1 = [
{schema, failsafe}