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darcs2hg: Now understands files that were explicitly renamed in darcs.

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This commit is contained in:
Terry Smith 2007-09-11 12:42:52 -04:00
parent 5025962412
commit 93e0edd2dc
1 changed files with 51 additions and 1 deletions
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52
contrib/darcs2hg.py
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@ -98,6 +98,33 @@ def darcs_pull(hg_repo, darcs_repo, chash):
if not new_tip != old_tip + 1:
error("Darcs pull did not work as expected: " + res)
def darcs_changes_summary(darcs_repo, chash):
"""Gets the changes from the darcs summary. This returns the chronological
list of changes as (change_type, args). Eg. ('add_file', 'foo.txt') or
('move', ['foo.txt','bar.txt'])."""
change = cmd("darcs changes --summary --xml-output --match=\"hash %s\"" % (chash), darcs_repo)
doc = xml_dom.parseString(change)
for patch_node in doc.childNodes[0].childNodes:
summary_nodes = filter(lambda n: n.nodeName == "summary" and n.nodeType == n.ELEMENT_NODE, patch_node.childNodes)
for summary_node in summary_nodes:
change_nodes = filter(lambda n: n.nodeType == n.ELEMENT_NODE, summary_node.childNodes)
for change_node in change_nodes:
change = change_node.nodeName
if change == 'modify_file':
yield change, change_node.childNodes[0].data.strip()
elif change == 'add_file':
yield change, change_node.childNodes[0].data.strip()
elif change == 'remove_file':
yield change, change_node.childNodes[0].data.strip()
elif change == 'add_directory':
yield change, change_node.childNodes[0].data.strip()
elif change == 'remove_directory':
yield change, change_node.childNodes[0].data.strip()
elif change == 'move':
yield change, (change_node.getAttribute('from'), change_node.getAttribute('to'))
else:
error('Problem parsing summary xml: Unexpected element: ' + change_node.toxml())
# ------------------------------------------------------------------------------
#
# Mercurial interface
@ -127,6 +154,27 @@ def hg_tip( hg_repo ):
tip = tip.split("\n")[0].split(":")[1].strip()
return int(tip)
def hg_rename( hg_repo, from_file, to_file ):
cmd("hg rename --after \"%s\" \"%s\"" % (from_file, to_file), hg_repo);
def hg_handle_change( hg_repo, change, arg ):
"""Processes a change event as output by darcs_changes_summary. These
consist of file move/rename/add/delete commands."""
if change == 'modify_file':
pass
elif change == 'add_file':
pass
elif change =='remove_file':
pass
elif change == 'add_directory':
pass
elif change == 'remove_directory':
pass
elif change == 'move':
hg_rename(hg_repo, arg[0], arg[1])
else:
error('Unknown change type ' + change + ': ' + arg)
# ------------------------------------------------------------------------------
#
# Main
@ -167,11 +215,13 @@ if __name__ == "__main__":
print "(skipping)"
else:
text = summary + "\n" + description
darcs_pull(hg_repo, darcs_repo, chash)
# The commit hash has a date like 20021020201112
# --------------------------------YYYYMMDDHHMMSS
date = chash.split("-")[0]
epoch = int(mktime(strptime(date, '%Y%m%d%H%M%S')))
darcs_pull(hg_repo, darcs_repo, chash)
for change, arg in darcs_changes_summary(darcs_repo, chash):
hg_handle_change(hg_repo, change, arg)
hg_commit(hg_repo, text, author, epoch)
change_number += 1
print "Darcs repository (_darcs) was not deleted. You can keep or remove it."