| #!/usr/bin/python |
| """ |
| Simulates svnrdump by replaying an existing dump from a file, taking care |
| of the specified revision range. |
| To simulate incremental imports the environment variable SVNRMAX can be set |
| to the highest revision that should be available. |
| """ |
| import sys, os |
| |
| if sys.hexversion < 0x02040000: |
| # The limiter is the ValueError() calls. This may be too conservative |
| sys.stderr.write("svnrdump-sim.py: requires Python 2.4 or later.\n") |
| sys.exit(1) |
| |
| def getrevlimit(): |
| var = 'SVNRMAX' |
| if var in os.environ: |
| return os.environ[var] |
| return None |
| |
| def writedump(url, lower, upper): |
| if url.startswith('sim://'): |
| filename = url[6:] |
| if filename[-1] == '/': filename = filename[:-1] #remove terminating slash |
| else: |
| raise ValueError('sim:// url required') |
| f = open(filename, 'r'); |
| state = 'header' |
| wroterev = False |
| while(True): |
| l = f.readline() |
| if l == '': break |
| if state == 'header' and l.startswith('Revision-number: '): |
| state = 'prefix' |
| if state == 'prefix' and l == 'Revision-number: %s\n' % lower: |
| state = 'selection' |
| if not upper == 'HEAD' and state == 'selection' and l == 'Revision-number: %s\n' % upper: |
| break; |
| |
| if state == 'header' or state == 'selection': |
| if state == 'selection': wroterev = True |
| sys.stdout.write(l) |
| return wroterev |
| |
| if __name__ == "__main__": |
| if not (len(sys.argv) in (3, 4, 5)): |
| print("usage: %s dump URL -rLOWER:UPPER") |
| sys.exit(1) |
| if not sys.argv[1] == 'dump': raise NotImplementedError('only "dump" is suppported.') |
| url = sys.argv[2] |
| r = ('0', 'HEAD') |
| if len(sys.argv) == 4 and sys.argv[3][0:2] == '-r': |
| r = sys.argv[3][2:].lstrip().split(':') |
| if not getrevlimit() is None: r[1] = getrevlimit() |
| if writedump(url, r[0], r[1]): ret = 0 |
| else: ret = 1 |
| sys.exit(ret) |
