Mercurial Repositories > eric / file comparison
comparison: DebugClients/Python3/coverage/debug.py
DebugClients/Python3/coverage/debug.py
- branch
- Py2 comp.
- changeset 3495
- fac17a82b431
- child 4489
- d0d6e4ad31bd
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| 3485:f1cbc18f88b2 | 3495:fac17a82b431 |
|---|---|
| 1 """Control of and utilities for debugging.""" | |
| 2 | |
| 3 import os | |
| 4 | |
| 5 | |
| 6 # When debugging, it can be helpful to force some options, especially when | |
| 7 # debugging the configuration mechanisms you usually use to control debugging! | |
| 8 # This is a list of forced debugging options. | |
| 9 FORCED_DEBUG = [] | |
| 10 | |
| 11 | |
| 12 class DebugControl(object): | |
| 13 """Control and output for debugging.""" | |
| 14 | |
| 15 def __init__(self, options, output): | |
| 16 """Configure the options and output file for debugging.""" | |
| 17 self.options = options | |
| 18 self.output = output | |
| 19 | |
| 20 def should(self, option): | |
| 21 """Decide whether to output debug information in category `option`.""" | |
| 22 return (option in self.options or option in FORCED_DEBUG) | |
| 23 | |
| 24 def write(self, msg): | |
| 25 """Write a line of debug output.""" | |
| 26 if self.should('pid'): | |
| 27 msg = "pid %5d: %s" % (os.getpid(), msg) | |
| 28 self.output.write(msg+"\n") | |
| 29 self.output.flush() | |
| 30 | |
| 31 def write_formatted_info(self, info): | |
| 32 """Write a sequence of (label,data) pairs nicely.""" | |
| 33 for line in info_formatter(info): | |
| 34 self.write(" %s" % line) | |
| 35 | |
| 36 | |
| 37 def info_formatter(info): | |
| 38 """Produce a sequence of formatted lines from info. | |
| 39 | |
| 40 `info` is a sequence of pairs (label, data). The produced lines are | |
| 41 nicely formatted, ready to print. | |
| 42 | |
| 43 """ | |
| 44 label_len = max([len(l) for l, _d in info]) | |
| 45 for label, data in info: | |
| 46 if data == []: | |
| 47 data = "-none-" | |
| 48 if isinstance(data, (list, tuple)): | |
| 49 prefix = "%*s:" % (label_len, label) | |
| 50 for e in data: | |
| 51 yield "%*s %s" % (label_len+1, prefix, e) | |
| 52 prefix = "" | |
| 53 else: | |
| 54 yield "%*s: %s" % (label_len, label, data) |
