Preview command

[mringler]

Here is a fun one, this introduces a new command config:preview to output the directory structure for the current configuration.

It allows to check if paths in configuration and model namespaces in schema.xml result in the desired output without having to actually build the project (and subsequently finding and deleting files at the wrong location).

Example output looks like this:

Directory structure and files according to current config (directories marked as relative change when perpl is called from a different path):

└── $rootDir/
     ├── generated-conf/
     │    │  paths.phpConfDir Perpl configurations files (from config:convert and model:build). !from relative path!
     │    └─╼ loadDatabase.php (new)
     ├── generated-migrations/
     │       paths.migrationDir Migration files (target for migration:create, migration:migrate, etc) !from relative path!
     ├── generated-sql/
     │       paths.sqlDir SQL database initialization files for sql:insert (user-generated and generated from schema.xml by sql:build) !from relative path!
     └── tests/Fixtures/namespaced/
          │  paths.schemaDir Schema XML files (input for migration:diff, database:reverse, etc)
          ├── generated-classes/
          │    │  paths.phpDir Base target directory for model:build
          │    ├── Baz/
          │    │    ├── Base/
          │    │    │    ├── Collection/
          │    │    │    │    ├─╼ NamespacedBookClubCollection.php (exists, override if changed)
          │    │    │    │    ├─╼ NamespacedBookListRelCollection.php (exists, override if changed)
          │    │    │    │    └─╼ NamespacedPublisherCollection.php (exists, override if changed)
          │    │    │    ├─╼ NamespacedBookClub.php (exists, override if changed)
          │    │    │    ├─╼ NamespacedBookClubQuery.php (exists, override if changed)
          │    │    │    ├─╼ NamespacedBookListRel.php (exists, override if changed)
          │    │    │    ├─╼ NamespacedBookListRelQuery.php (exists, override if changed)
          │    │    │    ├─╼ NamespacedPublisher.php (exists, override if changed)
          │    │    │    └─╼ NamespacedPublisherQuery.php (exists, override if changed)
          │    │    ├── Map/
          │    │    │    ├─╼ NamespacedBookClubTableMap.php (exists, override if changed)
          │    │    │    ├─╼ NamespacedBookListRelTableMap.php (exists, override if changed)
          │    │    │    └─╼ NamespacedPublisherTableMap.php (exists, override if changed)
          │    │    ├─╼ NamespacedBookClub.php (exists, no override)
          │    │    ├─╼ NamespacedBookClubQuery.php (exists, no override)
          │    │    ├─╼ NamespacedBookListRel.php (exists, no override)
          │    │    ├─╼ NamespacedBookListRelQuery.php (exists, no override)
          │    │    ├─╼ NamespacedPublisher.php (exists, no override)
          │    │    └─╼ NamespacedPublisherQuery.php (exists, no override)
          │    └── Foo/Bar/
          │         ...
          └─╼ schema.xml 

Actual output comes with some colors and without the gaps between lines:

includes #93

Command currently requires schema dir with non-empty schema.xml. Maybe it should work without that too?