Mercurial > hg
view tests/f @ 25410:eee88912db0a
revlog: raise an exception earlier if an entry is too large (issue4675)
Before we were relying on _pack to error out when trying to pass an
integer that was too large for the "i" format specifier. Now we check
this earlier so we can form a better error message.
The error message unfortunately must exclude the filename at this
level of the call stack. The problem is that this name is not
available here, and the error can be triggered by a large manifest or
by a large file itself. Although perhaps we could provide the name of
a revlog index file (from the revlog object, instead of the revlogio
object), this seems like too much leakage of internal data structures.
It's not ideal already that an error message even mentions revlogs,
but this does seem unavoidable here.
author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
---|---|
date | Tue, 02 Jun 2015 15:04:39 -0400 |
parents | 7d0aa6269ece |
children | 6686ae524f94 |
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#!/usr/bin/env python """ Utility for inspecting files in various ways. This tool is like the collection of tools found in a unix environment but are cross platform and stable and suitable for our needs in the test suite. This can be used instead of tools like: [ dd find head hexdump ls md5sum readlink sha1sum stat tail test readlink.py md5sum.py """ import sys, os, errno, re, glob, optparse def visit(opts, filenames, outfile): """Process filenames in the way specified in opts, writing output to outfile.""" for f in sorted(filenames): isstdin = f == '-' if not isstdin and not os.path.lexists(f): outfile.write('%s: file not found\n' % f) continue quiet = opts.quiet and not opts.recurse or isstdin isdir = os.path.isdir(f) islink = os.path.islink(f) isfile = os.path.isfile(f) and not islink dirfiles = None content = None facts = [] if isfile: if opts.type: facts.append('file') if opts.hexdump or opts.dump or opts.md5: content = file(f).read() elif islink: if opts.type: facts.append('link') content = os.readlink(f) elif isstdin: content = sys.stdin.read() if opts.size: facts.append('size=%s' % len(content)) elif isdir: if opts.recurse or opts.type: dirfiles = glob.glob(f + '/*') facts.append('directory with %s files' % len(dirfiles)) elif opts.type: facts.append('type unknown') if not isstdin: stat = os.lstat(f) if opts.size and not isdir: facts.append('size=%s' % stat.st_size) if opts.mode and not islink: facts.append('mode=%o' % (stat.st_mode & 0777)) if opts.links: facts.append('links=%s' % stat.st_nlink) if opts.newer: # mtime might be in whole seconds so newer file might be same if stat.st_mtime >= os.stat(opts.newer).st_mtime: facts.append('newer than %s' % opts.newer) else: facts.append('older than %s' % opts.newer) if opts.md5 and content is not None: try: from hashlib import md5 except ImportError: from md5 import md5 facts.append('md5=%s' % md5(content).hexdigest()[:opts.bytes]) if opts.sha1 and content is not None: try: from hashlib import sha1 except ImportError: from sha import sha as sha1 facts.append('sha1=%s' % sha1(content).hexdigest()[:opts.bytes]) if isstdin: outfile.write(', '.join(facts) + '\n') elif facts: outfile.write('%s: %s\n' % (f, ', '.join(facts))) elif not quiet: outfile.write('%s:\n' % f) if content is not None: chunk = content if not islink: if opts.lines: if opts.lines >= 0: chunk = ''.join(chunk.splitlines(True)[:opts.lines]) else: chunk = ''.join(chunk.splitlines(True)[opts.lines:]) if opts.bytes: if opts.bytes >= 0: chunk = chunk[:opts.bytes] else: chunk = chunk[opts.bytes:] if opts.hexdump: for i in range(0, len(chunk), 16): s = chunk[i:i+16] outfile.write('%04x: %-47s |%s|\n' % (i, ' '.join('%02x' % ord(c) for c in s), re.sub('[^ -~]', '.', s))) if opts.dump: if not quiet: outfile.write('>>>\n') outfile.write(chunk) if not quiet: if chunk.endswith('\n'): outfile.write('<<<\n') else: outfile.write('\n<<< no trailing newline\n') if opts.recurse and dirfiles: assert not isstdin visit(opts, dirfiles, outfile) if __name__ == "__main__": parser = optparse.OptionParser("%prog [options] [filenames]") parser.add_option("-t", "--type", action="store_true", help="show file type (file or directory)") parser.add_option("-m", "--mode", action="store_true", help="show file mode") parser.add_option("-l", "--links", action="store_true", help="show number of links") parser.add_option("-s", "--size", action="store_true", help="show size of file") parser.add_option("-n", "--newer", action="store", help="check if file is newer (or same)") parser.add_option("-r", "--recurse", action="store_true", help="recurse into directories") parser.add_option("-S", "--sha1", action="store_true", help="show sha1 hash of the content") parser.add_option("-M", "--md5", action="store_true", help="show md5 hash of the content") parser.add_option("-D", "--dump", action="store_true", help="dump file content") parser.add_option("-H", "--hexdump", action="store_true", help="hexdump file content") parser.add_option("-B", "--bytes", type="int", help="number of characters to dump") parser.add_option("-L", "--lines", type="int", help="number of lines to dump") parser.add_option("-q", "--quiet", action="store_true", help="no default output") (opts, filenames) = parser.parse_args(sys.argv[1:]) if not filenames: filenames = ['-'] visit(opts, filenames, sys.stdout)