FEATURE: JSON and Output Format Filters

Workflow

Implement conversion filters and format filters using only Python standard-library facilities. Preserve interpolation behavior, compact JSON conversion, Unicode handling, escaping rules, and generator ordering. Support HTML, URI, shell, CSV, TSV, Base64, and inverse Base64 formats described by the manual.

Programmatic Acceptance

=== AC text-002-scoped-conformance ===
Intent: The authoritative corpus cases covering JSON conversion and output formats execute and pass.
Suite: scoped
Requires: executable=python3; scope=test

import json import os import subprocess import sys

selector = r"@text|@json|@html|@uri|@urid|@csv|@tsv|@sh|@base64|@base64d|tojson|fromjson|tostring" result = subprocess.run( [sys.executable, "sources/run_conformance.py", "--select", selector, "--json"], capture_output=True, text=True, env={**os.environ, "JQ": f"{os.getcwd()}/jq"}, ) print(result.stdout) print(result.stderr, file=sys.stderr) report = json.loads(result.stdout) summary = report["summary"] assert sum(summary.values()) > 0 assert summary["fail"] == 0 and summary["error"] == 0 assert result.returncode == 0 === END AC text-002-scoped-conformance ===

=== AC text-002-formats ===
Intent: The corpus exercises the declared format families rather than an empty selector.
Suite: scoped
Requires: executable=python3; scope=test

import json import os import subprocess import sys

selector = r"@html|@uri|@base64|@csv|@tsv|@sh" result = subprocess.run( [sys.executable, "sources/run_conformance.py", "--select", selector, "--json"], capture_output=True, text=True, env={**os.environ, "JQ": f"{os.getcwd()}/jq"}, ) print(result.stdout) print(result.stderr, file=sys.stderr) report = json.loads(result.stdout) summary = report["summary"] assert sum(summary.values()) > 0 assert summary["fail"] == 0 and summary["error"] == 0 assert result.returncode == 0 === END AC text-002-formats ===

User Acceptance

• None.

Guardrails

• Do not shell out to jq or use third-party formatting libraries.
• Preserve stdout JSON-lines behavior and send diagnostics only to stderr.