canvod-virtualiconvname 0.2.2

Canonical GNSS-T filename parser and data directory validator

canvod-virtualiconvname

Canonical GNSS-T filename parser and data directory validator.

Part of the canVODpy ecosystem.

Overview

canvod-virtualiconvname enforces and virtualizes the canVOD filename convention throughout the processing pipeline. It is the single source of truth for GNSS file naming, discovery, and pre-pipeline validation.

Convention format:

{SIT}{T}{NN}{AGC}_R_{YYYY}{DOY}{HHMM}_{PERIOD}_{SAMPLING}_{CONTENT}.{TYPE}

Example: ROSA01TUW_R_20250010000_15M_05S_AA.rnx

Key components

Component	Purpose
CanVODFilename	Pydantic model — parses and validates a single filename
FilenameMapper	Maps physical filenames to canonical names (virtual renaming)
DataDirectoryValidator	Pre-pipeline hard gate: blocks on unmatched or overlapping files
FilenameCatalog	DuckDB-backed catalog for file discovery
BUILTIN_PATTERNS	Glob patterns for all GNSS file types (single source of truth)

Installation

uv pip install canvod-virtualiconvname

Quick Start

from canvod.virtualiconvname import CanVODFilename, DataDirectoryValidator

# Parse a filename
fname = CanVODFilename.from_string("ROSA01TUW_R_20250010000_15M_05S_AA.rnx")
print(fname.site, fname.year, fname.doy)  # ROSA, 2025, 1

# Validate a data directory before processing
validator = DataDirectoryValidator(site_config)
validator.validate()  # raises on unmatched or overlapping files

Documentation

Full documentation

License

Apache License 2.0