mirror of
https://github.com/protomaps/PMTiles.git
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86 lines
3.4 KiB
Python
Executable File
86 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python
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#pmtiles to files
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import argparse
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import gzip
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import json
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import os
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import sqlite3
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import shutil
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from pmtiles.reader import read
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from pmtiles.writer import write
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parser = argparse.ArgumentParser(description='Convert between PMTiles and other archive formats.')
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parser.add_argument('input',help='Input .mbtiles or .pmtiles')
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parser.add_argument('output',help='Output .mbtiles, .pmtiles, or directory')
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parser.add_argument('--maxzoom', help='the maximum zoom level to include in the output.')
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parser.add_argument('--gzip', help='Add gzip encoding to the output if it is not already gzipped.',action='store_true')
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parser.add_argument('--overwrite', help='Overwrite the existing output.',action='store_true')
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args = parser.parse_args()
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def may_compress(data,compress):
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if compress and data[0:2] != b'\x1f\x8b':
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return gzip.compress(data)
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return data
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if os.path.exists(args.output) and not args.overwrite:
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print("Output exists, use --overwrite to overwrite the output.")
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exit(1)
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if args.overwrite:
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if os.path.isfile(args.output):
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os.remove(args.output)
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elif os.path.isdir(args.output):
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shutil.rmtree(args.output)
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if args.input.endswith('.mbtiles') and args.output.endswith('.pmtiles'):
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conn = sqlite3.connect(args.input)
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cursor = conn.cursor()
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with write(args.output) as writer:
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for row in cursor.execute('SELECT zoom_level,tile_column,tile_row,tile_data FROM tiles WHERE zoom_level <= ? ORDER BY zoom_level,tile_column,tile_row ASC',(args.maxzoom or 99,)):
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writer.write_tile(row[0],row[1],row[2],row[3])
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metadata = {}
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for row in cursor.execute('SELECT name,value FROM metadata'):
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metadata[row[0]] = row[1]
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if args.maxzoom:
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metadata['maxzoom'] = str(args.maxzoom)
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result = writer.finalize(metadata)
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print("Num tiles:",result['num_tiles'])
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print("Num unique tiles:",result['num_unique_tiles'])
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print("Num leaves:",result['num_leaves'])
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conn.close()
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elif args.input.endswith('.pmtiles') and args.output.endswith('.mbtiles'):
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conn = sqlite3.connect(args.output)
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cursor = conn.cursor()
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cursor.execute('CREATE TABLE metadata (name text, value text);')
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cursor.execute('CREATE TABLE tiles (zoom_level integer, tile_column integer, tile_row integer, tile_data blob);')
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with read(args.input) as reader:
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for k,v in reader.metadata.items():
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cursor.execute('INSERT INTO metadata VALUES(?,?)',(k,v))
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for tile, data in reader.tiles():
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cursor.execute('INSERT INTO tiles VALUES(?,?,?,?)',(tile[0],tile[1],tile[2],may_compress(data,args.gzip)))
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cursor.execute('CREATE UNIQUE INDEX tile_index on tiles (zoom_level, tile_column, tile_row);')
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conn.commit()
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conn.close()
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elif args.input.endswith(".pmtiles"):
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os.makedirs(args.output)
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with read(args.input) as reader:
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metadata = reader.metadata
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metadata['format']
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with open(os.path.join(args.output,'metadata.json'),'w') as f:
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f.write(json.dumps(metadata))
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for tile, data in reader.tiles():
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directory = os.path.join(args.output,str(tile[0]),str(tile[1]))
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path = os.path.join(directory,str(tile[2]) + '.' + metadata['format'])
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os.makedirs(directory,exist_ok=True)
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with open(path,'wb') as f:
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f.write(may_compress(data,args.gzip))
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else:
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print("Conversion not implemented") |