57 lines
1.2 KiB
Python
57 lines
1.2 KiB
Python
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#!/usr/bin/env python3
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import sys, re
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def usage():
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print ("""\
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Usage: %s KEY...
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Read a debian control file from STDIN, print KEY values to STDOUT
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""" % sys.argv[0])
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if len (sys.argv) > 0 and sys.argv[1] == "--help":
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usage()
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sys.exit(0)
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# regex: "^(?:KEY1|KEY2|...)\s*:\s*(.*?)\s*$"
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re_field = re.compile (
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"^(?:" +
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"|".join (
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[ re.escape (key) for key in sys.argv[1:] ]
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) +
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"):\s*(.*?)\s*$"
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)
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re_ws = re.compile ("^\s*$")
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in_header = True
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past_1st_paragraph = False
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in_multiline_field = False
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for line in sys.stdin:
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# skip initial empty lines
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if in_header and re_ws.fullmatch (line):
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continue
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in_header = False
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# skip everything past the 1st block
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if past_1st_paragraph:
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continue
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if re_ws.fullmatch (line):
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past_1st_paragraph = True
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continue
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# Key: value
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match = re_field.fullmatch (line)
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if match:
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print (match.group(1))
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in_multiline_field = True
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continue
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# line starts with a space or tab: belongs to the previous field
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if in_multiline_field and (line.startswith (" ") or line.startswith ("\t")):
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print (line[1:].rstrip())
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continue
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in_multiline_field = False
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