How about this? (I didn't actually run it). I just worry that you
catch all exceptions. There might be some sort of bug lurking in
there that we want to know about.
def hgInfo(self, target, source, env):
def gen_file(target, rev="Unknown", node="Unknown", date="Unknown"):
hg_stats = file(target, 'w')
print >>hg_stats, 'const char *hgRev = "%s:%s";' % (rev, node)
print >>hg_stats, 'const char *hgDate = "%s";' % date
hg_stats.close()
target = str(target[0])
scons_dir = eval(str(source[0]))
if not exists(scons_dir) or not isdir(scons_dir) or \
not exists(join(scons_dir, ".hg")):
gen_file(target)
return
try:
import mercurial
except ImportError:
gen_file(target)
return
import mercurial.demandimport, mercurial.hg, mercurial.ui
import mercurial.util, mercurial.node
repo = mercurial.hg.repository(mercurial.ui.ui(), scons_dir)
rev = mercurial.node.nullrev + repo.changelog.count()
changenode = repo.changelog.node(rev)
changes = repo.changelog.read(changenode)
date = mercurial.util.datestr(changes[2])
gen_file(target, rev, mercurial.node.hex(changenode), date)
mercurial.demandimport.disable()
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