README.md

@@ -24,10 +24,9 @@ These formats are supported for now: `http`, `curl`, `wget`.
 
 ## Planned features
 
-- conversion between postman schema v2.1 <-> v2.0 (#11);
 - support as many as possible/necessary of authentication kinds (_currently only `Bearer` supported_);
 - support as many as possible/necessary of body formats (_currently only `json` and `formdata`_);
-- documentation generation support (markdown) with responce examples (if present) (#6);
+- documentation generation support (markdown) with response examples (if present) (#6);
 - maybe some another convert formats (like httpie or something...);
 - better logging;
 - 90%+ test coverage, phpcs, psalm, etc.;
@@ -65,7 +64,6 @@ Possible ARGUMENTS:
         -o, --output        - a directory OUTPUT_PATH to put results in
         -e, --env           - use environment file with variables to replace in requests
         --var "NAME=VALUE"  - force replace specified env variable called NAME with custom VALUE
-                              (see interpolation notes below)
         -p, --preserve      - do not delete OUTPUT_PATH (if exists)
         -h, --help          - show this help message and exit
         -v, --version       - show version info and exit
@@ -78,21 +76,15 @@ OUTPUT_PATH must be a valid path to writeable directory.
 If -o or -e was specified several times then only last one will be used.
 
 Possible FORMATS:
-        --http   - generate raw *.http files (default)
-        --curl   - generate shell scripts with curl command
-        --wget   - generate shell scripts with wget command
+        --http     - generate raw *.http files (default)
+        --curl     - generate shell scripts with curl command
+        --wget     - generate shell scripts with wget command
+        --v2.0     - convert from Postman Collection Schema v2.1 into v2.0
+        --v2.1     - convert from Postman Collection Schema v2.0 into v2.1
+        -a, --all  - convert to all of formats listed above
 
 If no FORMATS specified then --http implied.
-Any of FORMATS can be specified at the same time.
-
-Notes about variable interpolation:
-        1. You can use -e to tell where to find variables to replace in requests.
-        2. You can use one or several --var to replace specific env variables to your own value.
-        3. Correct syntax is `--var "NAME=VALUE". NAME may be in curly braces like {{NAME}}.
-        4. Since -e is optional, a bunch of --var will emulate an environment. Also it does not
-           matter if there is --var in environment file you provided or not.
-        5. Even if you (not) provided -e and/or --var, any of variable may still be overridden
-           from collection (if any), so last ones has top priority.
+Any of FORMATS can be specified at the same time or replaced by --all.
 
 Example:
     ./pm-convert \
@@ -102,8 +94,8 @@ Example:
         --env ~/localhost.postman_environment.json \
         -d ~/personal \
         --var "myvar=some value" \
-        -o ~/postman_export 
-
+        -o ~/postman_export \
+        --all
 ```
 
 ### Notices
@@ -116,12 +108,39 @@ Example:
    If not, you can rename them in Postman or convert collections with similar names into different directories.
    Otherwise any generated file may be accidently overwritten by another one.
 
+## Notes about variable interpolation
+
+1. You can use -e to tell where to find variables to replace in requests.
+2. You can use one or several --var to replace specific env variables to your own value.
+3. Correct syntax is `--var "NAME=VALUE"`. `NAME` may be in curly braces like `{{NAME}}`.
+4. Since -e is optional, a bunch of `--var` will emulate an environment. Also it does not matter if there is `--var` in environment file you provided or not.
+5. Even if you (not) provided -e and/or `--var`, any of variable may still be overridden from collection (if any), so last ones has top priority.
+
+### Notes about conversion between Postman Schemas
+
+You can use `--v2.1` to convert v2.1 into v2.1 (and this is not a typo).
+Same applies to `--v2.0`.
+
+There is a case when a collection has been exported via Postman API.
+In such case collection itself places in single root object called `collection` like this:
+
+```
+{
+   "collection": {
+      // your actual collection here
+   }
+}
+```
+
+So, pm-convert will just raise actual data up on top level and write into disk.
+
 ## How to implement a new format
 
-1. Create new namespace in `./src/Converters` and name it according to format of your choice
-2. Create two classes for converter and request object which extends `Converters\Abstract\Abstract{Converter, Request}` respectively
-3. Change constants values in your new request class according to format you want to implement
-4. Write your own logic in converter's `__toString()` method, write new methods and override abstract ones
+1. Create new namespace in `./src/Converters` and name it according to format of your choice.
+2. Create two classes for converter and request object which extends `Converters\Abstract\Abstract{Converter, Request}` respectively.
+3. Change constants values in your new request class according to format you want to implement.
+4. Add your converter class name in `Converters\ConvertFormat`.
+5. Write your own logic in converter, write new methods and override abstract ones.
 
 ## License
 

composer.json

@@ -13,7 +13,8 @@
     "keywords": ["postman", "collection", "converter", "http", "wget", "curl", "api", "convert"],
     "require": {
         "php": "^8.1",
-        "ext-json": "*"
+        "ext-json": "*",
+        "ext-mbstring": "*"
     },
     "bin": ["pm-convert"],
     "autoload": {

src/Collection.php

@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace PmConverter;
+
+use JsonException;
+use Stringable;
+
+/**
+ * Class that describes a request collection
+ *
+ * @property array|object $item
+ * @property object $info
+ * @property object|null $variable
+ */
+class Collection implements Stringable
+{
+    /**
+     * Closed constructor so that we could use factory methods
+     *
+     * @param object $json
+     */
+    private function __construct(protected object $json)
+    {
+        // specific case when collection has been exported via postman api
+        if (isset($json->collection)) {
+            $json = $json->collection;
+        }
+        $this->json = $json;
+    }
+
+    /**
+     * Factory that creates new Collection from content read from file path
+     *
+     * @param string $path
+     * @return static
+     * @throws JsonException
+     */
+    public static function fromFile(string $path): static
+    {
+        $content = file_get_contents(FileSystem::normalizePath($path));
+        $json = json_decode($content, flags: JSON_THROW_ON_ERROR);
+        return new static($json);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function __toString(): string
+    {
+        return json_encode($this->json, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
+    }
+
+    /**
+     * Returns reference to the parsed json structure
+     *
+     * @return object
+     */
+    public function &raw(): object
+    {
+        return $this->json;
+    }
+
+    /**
+     * Returns reference to any part of the parsed json structure
+     *
+     * @param string $name
+     * @return mixed
+     */
+    public function &__get(string $name): mixed
+    {
+        return $this->json->$name;
+    }
+
+    /**
+     * Returns collection name
+     *
+     * @return string
+     */
+    public function name(): string
+    {
+        return $this->json->info->name;
+    }
+
+    /**
+     * Returns the collection version
+     *
+     * @return CollectionVersion
+     */
+    public function version(): CollectionVersion
+    {
+        return match (true) {
+            str_contains($this->json->info->schema, '/v2.0.') => CollectionVersion::Version20,
+            str_contains($this->json->info->schema, '/v2.1.') => CollectionVersion::Version21,
+            default => CollectionVersion::Unknown
+        };
+    }
+}

src/CollectionVersion.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PmConverter;
+
+enum CollectionVersion: string
+{
+    case Version20 = 'v2.0';
+    case Version21 = 'v2.1';
+    case Unknown = 'unknown';
+}

src/Converters/Abstract/AbstractConverter.php

@@ -5,11 +5,15 @@ declare(strict_types=1);
 namespace PmConverter\Converters\Abstract;
 
 use Exception;
+use PmConverter\Collection;
 use PmConverter\Converters\{
     ConverterContract,
     RequestContract};
 use PmConverter\Environment;
-use PmConverter\Exceptions\InvalidHttpVersionException;
+use PmConverter\Exceptions\{
+    CannotCreateDirectoryException,
+    DirectoryIsNotWriteableException,
+    InvalidHttpVersionException};
 use PmConverter\FileSystem;
 
 /**
@@ -18,9 +22,9 @@ use PmConverter\FileSystem;
 abstract class AbstractConverter implements ConverterContract
 {
     /**
-     * @var object|null
+     * @var Collection|null
      */
-    protected ?object $collection = null;
+    protected ?Collection $collection = null;
 
     /**
      * @var string
@@ -45,14 +49,32 @@ abstract class AbstractConverter implements ConverterContract
     }
 
     /**
-     * Converts collection requests
+     * Creates a new directory to save a converted collection into
      *
-     * @throws Exception
+     * @param string $outputPath
+     * @return void
+     * @throws CannotCreateDirectoryException
+     * @throws DirectoryIsNotWriteableException
      */
-    public function convert(object $collection, string $outputPath): void
+    protected function prepareOutputDir(string $outputPath): void
     {
         $outputPath = sprintf('%s%s%s', $outputPath, DIRECTORY_SEPARATOR, static::OUTPUT_DIR);
         $this->outputPath = FileSystem::makeDir($outputPath);
+    }
+
+    /**
+     * Converts collection requests
+     *
+     * @param Collection $collection
+     * @param string $outputPath
+     * @return void
+     * @throws CannotCreateDirectoryException
+     * @throws DirectoryIsNotWriteableException
+     * @throws Exception
+     */
+    public function convert(Collection $collection, string $outputPath): void
+    {
+        $this->prepareOutputDir($outputPath);
         $this->collection = $collection;
         $this->setVariables();
         foreach ($collection->item as $item) {
@@ -94,7 +116,9 @@ abstract class AbstractConverter implements ConverterContract
      */
     protected function isItemFolder(object $item): bool
     {
-        return !empty($item->item) && empty($item->request);
+        return !empty($item->item)
+            && is_array($item->item)
+            && empty($item->request);
     }
 
     /**

src/Converters/Abstract/AbstractRequest.php

@@ -8,7 +8,7 @@ use PmConverter\Converters\RequestContract;
 use PmConverter\Exceptions\{
     EmptyHttpVerbException,
     InvalidHttpVersionException};
-use PmConverter\HttpVersions;
+use PmConverter\HttpVersion;
 use Stringable;
 
 /**
@@ -61,9 +61,9 @@ abstract class AbstractRequest implements Stringable, RequestContract
      */
     public function setHttpVersion(float $version): static
     {
-        if (!in_array($version, HttpVersions::values())) {
+        if (!in_array($version, HttpVersion::values())) {
             throw new InvalidHttpVersionException(
-                'Only these HTTP versions are supported: ' . implode(', ', HttpVersions::values())
+                'Only these HTTP versions are supported: ' . implode(', ', HttpVersion::values())
             );
         }
         $this->httpVersion = $version;

src/Converters/ConvertFormat.php

@@ -8,6 +8,8 @@ namespace PmConverter\Converters;
 use PmConverter\Converters\{
     Curl\CurlConverter,
     Http\HttpConverter,
+    Postman20\Postman20Converter,
+    Postman21\Postman21Converter,
     Wget\WgetConverter};
 
 enum ConvertFormat: string
@@ -15,4 +17,6 @@ enum ConvertFormat: string
     case Http = HttpConverter::class;
     case Curl = CurlConverter::class;
     case Wget = WgetConverter::class;
+    case Postman20 = Postman20Converter::class;
+    case Postman21 = Postman21Converter::class;
 }

src/Converters/ConverterContract.php

@@ -4,8 +4,10 @@ declare(strict_types=1);
 
 namespace PmConverter\Converters;
 
+use PmConverter\Collection;
+
 interface ConverterContract
 {
-    public function convert(object $collection, string $outputPath): void;
+    public function convert(Collection $collection, string $outputPath): void;
     public function getOutputPath(): string;
 }

src/Converters/Postman20/Postman20Converter.php

@@ -0,0 +1,137 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PmConverter\Converters\Postman20;
+
+use PmConverter\Collection;
+use PmConverter\CollectionVersion;
+use PmConverter\Converters\{
+    Abstract\AbstractConverter,
+    ConverterContract};
+use PmConverter\Exceptions\CannotCreateDirectoryException;
+use PmConverter\Exceptions\DirectoryIsNotWriteableException;
+use PmConverter\FileSystem;
+
+/**
+ * Converts Postman Collection v2.1 to v2.0
+ */
+class Postman20Converter extends AbstractConverter implements ConverterContract
+{
+    protected const FILE_EXT = 'v20.postman_collection.json';
+
+    protected const OUTPUT_DIR = 'pm-v2.0';
+
+    /**
+     * Converts collection requests
+     *
+     * @param Collection $collection
+     * @param string $outputPath
+     * @return void
+     * @throws CannotCreateDirectoryException
+     * @throws DirectoryIsNotWriteableException
+     */
+    public function convert(Collection $collection, string $outputPath): void
+    {
+        $this->collection = $collection;
+        // if data was exported from API, here is already valid json to
+        // just flush it in file, otherwise we need to convert it deeper
+        if ($this->collection->version() === CollectionVersion::Version21) {
+            $this->collection->info->schema = str_replace('/v2.1.', '/v2.0.', $this->collection->info->schema);
+            $this->convertAuth($this->collection->raw());
+            foreach ($this->collection->item as $item) {
+                $this->convertItem($item);
+            }
+        }
+        $this->prepareOutputDir($outputPath);
+        $this->writeCollection();
+    }
+
+    /**
+     * Writes converted collection into file
+     *
+     * @return bool
+     * @throws CannotCreateDirectoryException
+     * @throws DirectoryIsNotWriteableException
+     */
+    protected function writeCollection(): bool
+    {
+        $filedir = FileSystem::makeDir($this->outputPath);
+        $filepath = sprintf('%s%s%s.%s', $filedir, DIRECTORY_SEPARATOR, $this->collection->name(), static::FILE_EXT);
+        return file_put_contents($filepath, $this->collection) > 0;
+    }
+
+    /**
+     * Changes some requests fields in place
+     *
+     * @param mixed $item
+     * @return void
+     */
+    protected function convertItem(mixed $item): void
+    {
+        if ($this->isItemFolder($item)) {
+            foreach ($item->item as $subitem) {
+                if ($this->isItemFolder($subitem)) {
+                    $this->convertItem($subitem);
+                } else {
+                    $this->convertAuth($subitem->request);
+                    $this->convertRequestUrl($subitem->request);
+                    $this->convertResponseUrls($subitem->response);
+                }
+            }
+        } else {
+            $this->convertAuth($item->request);
+            $this->convertRequestUrl($item->request);
+            $this->convertResponseUrls($item->response);
+        }
+    }
+
+    /**
+     * Converts auth object from v2.1 to v2.0
+     *
+     * @param object $request
+     * @return void
+     */
+    protected function convertAuth(object $request): void
+    {
+        if (empty($request->auth)) {
+            return;
+        }
+        $type = $request->auth->type;
+        if ($type !== 'noauth' && is_array($request->auth->$type)) {
+            $auth = [];
+            foreach ($request->auth->$type as $param) {
+                $auth[$param->key] = $param->value;
+            }
+            $request->auth->$type = (object)$auth;
+        }
+    }
+
+    /**
+     * Converts requests URLs from object v2.1 to string v2.0
+     *
+     * @param object $request
+     * @return void
+     */
+    protected function convertRequestUrl(object $request): void
+    {
+        if (is_object($request->url)) {
+            $request->url = $request->url->raw;
+        }
+    }
+
+    /**
+     * Converts URLs response examples from object v2.1 to string v2.0
+     *
+     * @param array $responses
+     * @return void
+     */
+    protected function convertResponseUrls(array $responses): void
+    {
+        foreach ($responses as $response) {
+            if (is_object($response->originalRequest->url)) {
+                $response->originalRequest->url = $response->originalRequest->url->raw;
+            }
+        }
+    }
+}

src/Converters/Postman21/Postman21Converter.php

@@ -0,0 +1,169 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PmConverter\Converters\Postman21;
+
+use PmConverter\Collection;
+use PmConverter\CollectionVersion;
+use PmConverter\Converters\{
+    Abstract\AbstractConverter,
+    ConverterContract};
+use PmConverter\Exceptions\CannotCreateDirectoryException;
+use PmConverter\Exceptions\DirectoryIsNotWriteableException;
+use PmConverter\FileSystem;
+
+/**
+ * Converts Postman Collection v2.0 to v2.1
+ */
+class Postman21Converter extends AbstractConverter implements ConverterContract
+{
+    protected const FILE_EXT = 'v21.postman_collection.json';
+
+    protected const OUTPUT_DIR = 'pm-v2.1';
+
+    /**
+     * Converts collection requests
+     *
+     * @param Collection $collection
+     * @param string $outputPath
+     * @return void
+     * @throws CannotCreateDirectoryException
+     * @throws DirectoryIsNotWriteableException
+     */
+    public function convert(Collection $collection, string $outputPath): void
+    {
+        $this->collection = $collection;
+        // if data was exported from API, here is already valid json to
+        // just flush it in file, otherwise we need to convert it deeper
+        if ($this->collection->version() === CollectionVersion::Version20) {
+            $this->collection->info->schema = str_replace('/v2.0.', '/v2.1.', $this->collection->info->schema);
+            $this->convertAuth($this->collection->raw());
+            foreach ($this->collection->item as $item) {
+                $this->convertItem($item);
+            }
+        }
+        $this->prepareOutputDir($outputPath);
+        $this->writeCollection();
+    }
+
+    /**
+     * Writes converted collection into file
+     *
+     * @return bool
+     * @throws CannotCreateDirectoryException
+     * @throws DirectoryIsNotWriteableException
+     */
+    protected function writeCollection(): bool
+    {
+        $filedir = FileSystem::makeDir($this->outputPath);
+        $filepath = sprintf('%s%s%s.%s', $filedir, DIRECTORY_SEPARATOR, $this->collection->name(), static::FILE_EXT);
+        return file_put_contents($filepath, $this->collection) > 0;
+    }
+
+    /**
+     * Changes some requests fields in place
+     *
+     * @param mixed $item
+     * @return void
+     */
+    protected function convertItem(mixed $item): void
+    {
+        if ($this->isItemFolder($item)) {
+            foreach ($item->item as $subitem) {
+                if ($this->isItemFolder($subitem)) {
+                    $this->convertItem($subitem);
+                } else {
+                    $this->convertAuth($subitem->request);
+                    $this->convertRequestUrl($subitem->request);
+                    $this->convertResponseUrls($subitem->response);
+                }
+            }
+        } else {
+            $this->convertAuth($item->request);
+            $this->convertRequestUrl($item->request);
+            $this->convertResponseUrls($item->response);
+        }
+    }
+
+    /**
+     * Converts auth object from v2.0 to v2.1
+     *
+     * @param object $request
+     * @return void
+     */
+    protected function convertAuth(object $request): void
+    {
+        if (empty($request->auth)) {
+            return;
+        }
+        $type = $request->auth->type;
+        if ($type !== 'noauth' && isset($request->auth->$type)) {
+            $auth = [];
+            foreach ($request->auth->$type as $key => $value) {
+                $auth[] = (object)[
+                    'key' => $key,
+                    'value' => $value,
+                    'type' => 'string',
+                ];
+            }
+            $request->auth->$type = $auth;
+        }
+    }
+
+    /**
+     * Converts requests URLs from string v2.0 to object v2.1
+     *
+     * @param object $request
+     * @return void
+     */
+    protected function convertRequestUrl(object $request): void
+    {
+        if (is_string($request->url) && mb_strlen($request->url) > 0) {
+            $data = array_values(array_filter(explode('/', $request->url))); //TODO URL parsing
+            if (count($data) === 1) {
+                $url = [
+                    'raw' => $request->url,
+                    'host' => [$data[0] ?? $request->url],
+                ];
+            } else {
+                $url = [
+                    'raw' => $request->url,
+                    'protocol' => str_replace(':', '', $data[0]),
+                    'host' => [$data[1] ?? $request->url],
+                    'path' => array_slice($data, 2),
+                ];
+            }
+            $request->url = (object)$url;
+        }
+    }
+
+    /**
+     * Converts URLs response examples from string v2.0 to object v2.1
+     *
+     * @param array $responses
+     * @return void
+     */
+    protected function convertResponseUrls(array $responses): void
+    {
+        foreach ($responses as $response) {
+            if (is_string($response->originalRequest->url)) {
+                $data = array_values(array_filter(explode('/', $response->originalRequest->url))); //TODO URL parsing
+                if (count($data) === 1) {
+                    $url = [
+                        'raw' => $response->originalRequest->url,
+                        'host' => [$data[0] ?? $response->originalRequest->url],
+                    ];
+                } else {
+                    $url = [
+                        'raw' => $response->originalRequest->url,
+                        'protocol' => str_replace(':', '', $data[0]),
+                        'host' => [$data[1] ?? $response->originalRequest->url],
+                        'path' => array_slice($data, 2),
+                    ];
+                }
+                $response->originalRequest->url = (object)$url;
+            }
+        }
+    }
+}

src/Environment.php

@@ -12,12 +12,14 @@ class Environment implements \ArrayAccess
     protected array $vars = [];
 
     /**
-     * @param object $env
+     * @param object|null $env
      */
-    public function __construct(protected object $env)
+    public function __construct(protected ?object $env)
     {
-        foreach ($env->values as $var) {
-            $this->vars[static::formatKey($var->key)] = $var->value;
+        if (!empty($env->values)) {
+            foreach ($env->values as $var) {
+                $this->vars[static::formatKey($var->key)] = $var->value;
+            }
         }
     }
 

src/FileSystem.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace PmConverter;
 
+use JsonException;
 use PmConverter\Exceptions\{
     CannotCreateDirectoryException,
     DirectoryIsNotReadableException,
@@ -110,16 +111,14 @@ class FileSystem
      *
      * @param string $path
      * @return bool
+     * @throws JsonException
      */
     public static function isCollectionFile(string $path): bool
     {
-        $path = static::normalizePath($path);
-        return !empty($path = trim($path))
+        return (!empty($path = trim(static::normalizePath($path))))
             && str_ends_with($path, '.postman_collection.json')
             && file_exists($path)
             && is_readable($path)
-            && ($json = json_decode(file_get_contents($path), true))
-            && json_last_error() === JSON_ERROR_NONE
-            && isset($json['collection']['info']['name']);
+            && Collection::fromFile($path)->version() !== CollectionVersion::Unknown;
     }
 }

src/HttpVersion.php

@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 namespace PmConverter;
 
-enum HttpVersions: string
+enum HttpVersion: string
 {
     case Version10 = '1.0';
     case Version11 = '1.1';

src/Processor.php

@@ -21,7 +21,7 @@ class Processor
     /**
      * Converter version
      */
-    public const VERSION = '1.4.1';
+    public const VERSION = '1.5.0';
 
     /**
      * @var string[] Paths to collection files
@@ -54,7 +54,7 @@ class Processor
     protected array $converters = [];
 
     /**
-     * @var object[] Collections that will be converted into choosen formats
+     * @var Collection[] Collections that will be converted into choosen formats
      */
     protected array $collections = [];
 
@@ -93,6 +93,7 @@ class Processor
      * Parses an array of arguments came from cli
      *
      * @return void
+     * @throws JsonException
      */
     protected function parseArgs(): void
     {
@@ -107,7 +108,7 @@ class Processor
                     $normpath = FileSystem::normalizePath($rawpath);
                     if (!FileSystem::isCollectionFile($normpath)) {
                         throw new InvalidArgumentException(
-                            sprintf("this is not a valid collection file:%s\t%s %s", PHP_EOL, $arg, $rawpath)
+                            sprintf("not a valid collection:%s\t%s %s", PHP_EOL, $arg, $rawpath)
                         );
                     }
                     $this->collectionPaths[] = $this->argv[$idx + 1];
@@ -156,6 +157,21 @@ class Processor
                     $this->formats[ConvertFormat::Wget->name] = ConvertFormat::Wget;
                     break;
 
+                case '--v2.0':
+                    $this->formats[ConvertFormat::Postman20->name] = ConvertFormat::Postman20;
+                    break;
+
+                case '--v2.1':
+                    $this->formats[ConvertFormat::Postman21->name] = ConvertFormat::Postman21;
+                    break;
+
+                case '-a':
+                case '--all':
+                    foreach (ConvertFormat::cases() as $format) {
+                        $this->formats[$format->name] = $format;
+                    }
+                    break;
+
                 case '--var':
                     [$var, $value] = explode('=', trim($this->argv[$idx + 1]));
                     $this->vars[$var] = $value;
@@ -219,12 +235,8 @@ class Processor
     protected function initCollections(): void
     {
         foreach ($this->collectionPaths as $collectionPath) {
-            $content = file_get_contents(FileSystem::normalizePath($collectionPath));
-            $content = json_decode($content, flags: JSON_THROW_ON_ERROR);
-            if (!property_exists($content, 'collection') || empty($content?->collection)) {
-                throw new JsonException("not a valid collection: $collectionPath");
-            }
-            $this->collections[$content->collection->info->name] = $content->collection;
+            $collection = Collection::fromFile($collectionPath);
+            $this->collections[$collection->name()] = $collection;
         }
         unset($this->collectionPaths, $content);
     }
@@ -297,8 +309,13 @@ class Processor
     protected function printStats(int $success, int $count): void
     {
         $time = (hrtime(true) - $this->initTime) / 1_000_000;
+        $timeFmt = 'ms';
+        if ($time > 1000) {
+            $time /= 1000;
+            $timeFmt = 'sec';
+        }
         $ram = (memory_get_peak_usage(true) - $this->initRam) / 1024 / 1024;
-        printf('Converted %d of %d in %.3f ms using up to %.3f MiB RAM%s', $success, $count, $time, $ram, PHP_EOL);
+        printf("Converted %d/%d in %.2f $timeFmt using up to %.2f MiB RAM%s", $success, $count, $time, $ram, PHP_EOL);
     }
 
     /**
@@ -338,7 +355,6 @@ class Processor
             "\t-o, --output        - a directory OUTPUT_PATH to put results in",
             "\t-e, --env           - use environment file with variables to replace in requests",
             "\t--var \"NAME=VALUE\"  - force replace specified env variable called NAME with custom VALUE",
-            "\t                      (see interpolation notes below)",
             "\t-p, --preserve      - do not delete OUTPUT_PATH (if exists)",
             "\t-h, --help          - show this help message and exit",
             "\t-v, --version       - show version info and exit",
@@ -351,21 +367,15 @@ class Processor
             'If -o or -e was specified several times then only last one will be used.',
             '',
             'Possible FORMATS:',
-            "\t--http   - generate raw *.http files (default)",
-            "\t--curl   - generate shell scripts with curl command",
-            "\t--wget   - generate shell scripts with wget command",
+            "\t--http     - generate raw *.http files (default)",
+            "\t--curl     - generate shell scripts with curl command",
+            "\t--wget     - generate shell scripts with wget command",
+            "\t--v2.0     - convert from Postman Collection Schema v2.1 into v2.0",
+            "\t--v2.1     - convert from Postman Collection Schema v2.0 into v2.1",
+            "\t-a, --all  - convert to all of formats listed above",
             '',
             'If no FORMATS specified then --http implied.',
-            'Any of FORMATS can be specified at the same time.',
-            '',
-            'Notes about variable interpolation:',
-            "\t1. You can use -e to tell where to find variables to replace in requests.",
-            "\t2. You can use one or several --var to replace specific env variables to your own value.",
-            "\t3. Correct syntax is `--var \"NAME=VALUE\". NAME may be in curly braces like {{NAME}}.",
-            "\t4. Since -e is optional, a bunch of --var will emulate an environment. Also it does not",
-            "\t   matter if there is --var in environment file you provided or not.",
-            "\t5. Even if you (not) provided -e and/or --var, any of variable may still be overridden",
-            "\t   from collection (if any), so last ones has top priority.",
+            'Any of FORMATS can be specified at the same time or replaced by --all.',
             '',
             'Example:',
             "    ./pm-convert \ ",
@@ -375,7 +385,8 @@ class Processor
             "        --env ~/localhost.postman_environment.json \ ",
             "        -d ~/personal \ ",
             "        --var \"myvar=some value\" \ ",
-            "        -o ~/postman_export ",
+            "        -o ~/postman_export \ ",
+            "       --all",
             "",
         ], $this->copyright());
     }

tests/AbstractRequestTest.php

@@ -11,7 +11,7 @@ class AbstractRequestTest extends TestCase
 {
     /**
      * @covers PmConverter\Converters\Abstract\AbstractRequest
-     * @covers PmConverter\HttpVersions
+     * @covers PmConverter\HttpVersion
      * @return void
      * @throws InvalidHttpVersionException
      */
@@ -26,7 +26,7 @@ class AbstractRequestTest extends TestCase
     /**
      * @covers PmConverter\Converters\Abstract\AbstractRequest
      * @covers PmConverter\Converters\Abstract\AbstractRequest::getVerb()
-     * @covers PmConverter\HttpVersions
+     * @covers PmConverter\HttpVersion
      * @return void
      * @throws InvalidHttpVersionException
      */