{
    "$id": "/pub/schema/file.schema",
    "title": "Filename parameter",
    "type": "object",
    "properties": {
	"type": { "const": "file" },
	"keyword": { "$ref": "/pub/schema/keyword.schema" },
	"required": { "type": "boolean", "description": "informs whether the parameter is required or not" },
	"multiple": { "type": "boolean", "description": "informs whether the parameter can be informed more than once" },
	"description": { "$ref": "/pub/schema/desc.schema" },
	"fileType": {
	    "type": "string",
	    "description": "Type of expected file",
	    "examples": [
		"Image file",
		"SEG-Y data"
		]
	},
	"filePattern": {
	    "type": "string",
	    "description": "Pattern to filter filenames",
	    "examples": [
		"*.png; *.jpg",
		"*.su"
	    ]
	},
	"default": {
	    "type": "string",
	    "description": "Default filenane"
	},
	"value": {
	    "type": "array",
	    "items": {
		"oneOf": [
		    { "$ref": "/pub/schema/expression.schema" },
		    {
			"type": "object",
			"properties": {
			    "literal": {
				"type": "string",
				"description": "Filename"
			    }
			},
			"additionalProperties": false
		    }
		]
	    }
	}	
    },
    "required": ["type", "keyword", "description", "required", "multiple"],
    "dependencies": {
	"filePattern": [ "fileType" ]
    },
    "additionalProperties": false
}