add example app that reads stdin

data/test_stdin.txt

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+example.csv csv json example.json
+example.csv csv jsonc example.jsonc
+example.csv json jsonc example.jsonc
+example.csv jsonc json example.json
+example.json jsonc json example.json
+example.jsonc json json example.json

src/jsonmaestro/apps/converter.py

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+import sys
+from typing import Dict, List
+
+from jsonmaestro.logger import infof
+from jsonmaestro.loader import Loader
+from jsonmaestro.converter import Converter
+
+
+def read_input() -> List[Dict[str, str]]:
+	"""
+	Reads input from stdin and returns a list of dictionaries.
+	Each dictionary represents a line in the input file.
+	The dictionary has three keys: "file", "format_in", and "format_out".
+	"file_in" is the path to the file to be converted.
+	"format_in" is the format of the file to be converted.
+	"format_out" is the format to convert the file to.
+	"file_out" is the path to the output file.
+	"""
+	input_data: List[Dict[str, str]] = []
+
+	for line in sys.stdin:
+		line = line.strip()
+		l: Dict[str, str] = {}
+		parts = line.split(" ")
+		l["file_in"] = parts[0]
+		l["format_in"] = parts[1]
+		l["format_out"] = parts[2]
+		l["file_out"] = parts[3]
+		input_data.append(l)
+
+	return input_data
+
+
+def main() -> None:
+	input_data: List[Dict[str, str]] = read_input()
+
+	for conversion in input_data:
+		infof("Converting {} from {} to {}", conversion['file_in'],
+		      conversion['format_in'], conversion['format_out'])
+
+		loader = Loader(conversion['file_in'])
+
+		_converter = Converter(file_path=None,
+		                       str_data=None,
+		                       data=loader.load_as(conversion['format_in']),
+		                       source_format=conversion['format_in'],
+		                       target_format=conversion['format_out'])
+
+
+if __name__ == "__main__":
+	main()

tests/test_converter_app.py

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+import sys
+from io import StringIO
+from typing import Dict, List
+from jsonmaestro.apps.converter import read_input, main
+
+
+def test_read_input():
+	original_stdin = sys.stdin
+	test_input = "example.csv csv json example.json\n"
+	sys.stdin = StringIO(test_input)
+
+	data_out = read_input()
+
+	assert len(data_out) == 1
+	assert data_out[0]["file_in"] == "example.csv"
+	assert data_out[0]["format_in"] == "csv"
+	assert data_out[0]["format_out"] == "json"
+	assert data_out[0]["file_out"] == "example.json"
+
+	sys.stdin = original_stdin
+
+
+def test_read_input_from_file():
+	original_stdin = sys.stdin
+	with open("data/test_stdin.txt", "r") as file:
+		test_input = file.read()
+
+	sys.stdin = StringIO(test_input)
+	data_out = read_input()
+
+	assert True
+
+	with open("data/test_stdin.txt", "r") as file:
+		input = file.readlines()
+
+	assert len(data_out) == len(input)
+
+	in_data: List[Dict[str, str]] = []
+
+	for line in input:
+		line = line.strip()
+		l: Dict[str, str] = {}
+		parts = line.split(" ")
+		l["file_in"] = parts[0]
+		l["format_in"] = parts[1]
+		l["format_out"] = parts[2]
+		l["file_out"] = parts[3]
+		in_data.append(l)
+
+	for i in range(len(data_out)):
+		assert data_out[i]["file_in"] == in_data[i]["file_in"]
+		assert data_out[i]["format_in"] == in_data[i]["format_in"]
+		assert data_out[i]["format_out"] == in_data[i]["format_out"]
+		assert data_out[i]["file_out"] == in_data[i]["file_out"]
+
+	sys.stdin = original_stdin
+
+
+def test_main():
+	original_stdin = sys.stdin
+	test_input = "data/example.csv csv json data/example.json\n"
+	sys.stdin = StringIO(test_input)
+
+	main()
+
+	assert True
+
+	sys.stdin = original_stdin