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Merge pull request #78 from geoadmin/develop
New Release v1.4.0 - #minor
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| import argparse as ap | ||
| import logging | ||
| import os | ||
| import sys | ||
| from textwrap import dedent | ||
|
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||
| import cairosvg | ||
|
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| logger = logging.getLogger() | ||
| logger.setLevel(logging.DEBUG) | ||
|
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| handler = logging.StreamHandler(sys.stdout) | ||
| handler.setLevel(logging.DEBUG) | ||
| formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s') | ||
| handler.setFormatter(formatter) | ||
| logger.addHandler(handler) | ||
|
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|
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| def create_parser(): | ||
| parser = ap.ArgumentParser( | ||
| description=dedent( | ||
| """\ | ||
| Purpose: | ||
| This script is used to transform svg images into png | ||
| Example usage: | ||
| Transforming svg images into png using a source and a destination folder: | ||
| svg2png.py | ||
| --width 48 | ||
| --height 48 | ||
| --input /tmp/babs2 | ||
| --output ../app/static/images/babs2 | ||
| """ | ||
| ), | ||
| formatter_class=ap.RawDescriptionHelpFormatter | ||
| ) | ||
|
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| option_group = parser.add_argument_group('Program options') | ||
| option_group.add_argument( | ||
| '-I', | ||
| '--input', | ||
| dest='input', | ||
| action='store', | ||
| type=the_dir, | ||
| required=True, | ||
| help='The dir where the svg images are located' | ||
| ) | ||
|
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||
| option_group.add_argument( | ||
| '-O', | ||
| '--output', | ||
| dest='output', | ||
| action='store', | ||
| type=the_dir, | ||
| required=True, | ||
| help='The dir where the png images will be stored' | ||
| ) | ||
|
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||
| option_group.add_argument( | ||
| '-W', | ||
| '--width', | ||
| dest='width', | ||
| action='store', | ||
| default=None, | ||
| type=pixel_size, | ||
| help='The width in pixel of the png image' | ||
| ) | ||
|
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||
| option_group.add_argument( | ||
| '-H', | ||
| '--height', | ||
| dest='height', | ||
| action='store', | ||
| default=None, | ||
| type=pixel_size, | ||
| help='The width in pixel of the png image' | ||
| ) | ||
|
|
||
| option_group.add_argument( | ||
| '-R', | ||
| '--dpi', | ||
| dest='dpi', | ||
| action='store', | ||
| default=92, | ||
| type=dpi, | ||
| help='The resolution of the png image' | ||
| ) | ||
|
|
||
| option_group.add_argument( | ||
| '-D', | ||
| '--dryrun', | ||
| dest='dryrun', | ||
| action='store_false', | ||
| default=True, | ||
| help='The width in pixel of the png image' | ||
| ) | ||
|
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| return parser | ||
|
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|
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| def dpi(d): | ||
| d = float(d) # this may lead to an error, but that is ok | ||
| if d > 20: | ||
| return d | ||
| logger.error("The resolution has to be bigger than 20 dpi") | ||
| sys.exit(1) | ||
|
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|
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| def pixel_size(size): | ||
| size = float(size) # this may lead to an error, but that is ok | ||
| if size > 0.0: | ||
| return size | ||
| logger.error("size (width and heigh) has to be > 0") | ||
| sys.exit(1) | ||
|
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||
|
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| def the_dir(d): | ||
| if len(d) > 0: | ||
| return d | ||
| logger.error("the path has to be specified") | ||
| sys.exit(1) | ||
|
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||
|
|
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| def validate_args(argv): | ||
| parser = create_parser() | ||
| the_opts = parser.parse_args(argv[1:]) | ||
| return the_opts | ||
|
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|
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| def svg2png(): | ||
| # create output folder if not exists | ||
| if not os.path.exists(opts.output): | ||
| os.makedirs(opts.output) | ||
|
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| for file in os.listdir(opts.input): | ||
| if file.endswith(".svg"): | ||
| svg_image = os.path.join(opts.input, file) | ||
| png_image = os.path.join(opts.output, file[:-3] + 'png') | ||
| if opts.dryrun: | ||
| logger.debug("Treating image: %s > %s", svg_image, png_image) | ||
| cairosvg.svg2png( | ||
| dpi=opts.dpi, | ||
| file_obj=open(svg_image, "rb"), # pylint: disable=consider-using-with | ||
| write_to=png_image, | ||
| output_height=opts.height, | ||
| output_width=opts.width | ||
| ) | ||
| else: | ||
| logger.debug("dryrun image: %s > %s", svg_image, png_image) | ||
|
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|
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| def main(): | ||
| global opts # pylint: disable=global-variable-undefined | ||
| opts = validate_args(sys.argv) | ||
| svg2png() | ||
|
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|
|
||
| if __name__ == '__main__': | ||
| main() |
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