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As part of a goal to eliminate Perl from libvirt build tools, rewrite the group-qemu-caps.pl tool in Python. This was a straight conversion, manually going line-by-line to change the syntax from Perl to Python. Thus the overall structure of the file and approach is the same. Tested-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Cole Robinson <crobinso@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
122 lines
3.7 KiB
Python
Executable File
122 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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#
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# Regroup array values into smaller groups separated by numbered comments.
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#
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# If --check is the first parameter, the script will return
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# a non-zero value if a file is not grouped correctly.
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# Otherwise the files are regrouped in place.
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import argparse
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import re
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import subprocess
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import sys
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def regroup_caps(check, filename, start_regex, end_regex,
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trailing_newline, counter_prefix):
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step = 5
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original = []
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with open(filename, "r") as fh:
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for line in fh:
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original.append(line)
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fixed = []
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game_on = False
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counter = 0
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for line in original:
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line = line.rstrip("\n")
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if game_on:
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if re.search(r'''.*/\* [0-9]+ \*/.*''', line):
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continue
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if re.search(r'''^\s*$''', line):
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continue
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if counter % step == 0:
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if counter != 0:
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fixed.append("\n")
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fixed.append("%s/* %d */\n" % (counter_prefix, counter))
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if not (line.find("/*") != -1 and line.find("*/") == -1):
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# count two-line comments as one line
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counter = counter + 1
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if re.search(start_regex, line):
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game_on = True
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elif game_on and re.search(end_regex, line):
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if (counter - 1) % step == 0:
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fixed = fixed[:-1] # /* $counter */
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if counter != 1:
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fixed = fixed[:-1] # \n
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if trailing_newline:
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fixed.append("\n")
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game_on = False
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fixed.append(line + "\n")
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if check:
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orig = "".join(original)
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new = "".join(fixed)
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if new != orig:
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diff = subprocess.Popen(["diff", "-u", filename, "-"],
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stdin=subprocess.PIPE)
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diff.communicate(input=new.encode('utf-8'))
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print("Incorrect line wrapping in $file",
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file=sys.stderr)
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print("Use group-qemu-caps.py to generate data files",
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file=sys.stderr)
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return False
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else:
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with open(filename, "w") as fh:
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for line in fixed:
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print(line, file=fh, end='')
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return True
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parser = argparse.ArgumentParser(description='QEMU capabilities group formatter')
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parser.add_argument('--check', action="store_true",
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help='check existing files only')
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parser.add_argument('--prefix', default='',
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help='source code tree prefix')
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args = parser.parse_args()
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errs = False
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if not regroup_caps(args.check,
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args.prefix + 'src/qemu/qemu_capabilities.c',
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r'virQEMUCaps grouping marker',
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r'\);',
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0,
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" "):
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errs = True
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if not regroup_caps(args.check,
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args.prefix + 'src/qemu/qemu_capabilities.h',
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r'virQEMUCapsFlags grouping marker',
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r'QEMU_CAPS_LAST \/\* this must',
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1,
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" "):
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errs = True
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if errs:
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sys.exit(1)
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sys.exit(0)
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