kazuki saitoh <ksaitoh560@xxxxxxxxx> writes:
> Currently, git p4 does not support many of the view wildcards,
> such as * and %%n. It only knows the common ... mapping, and
> exclusions.
>
> Redo the entire wildcard code around the idea of
> directly querying the p4 server for the mapping. For each
> commit, invoke "p4 where" with committed file paths as args and use
> the client mapping to decide where the file goes in git.
>
> This simplifies a lot of code, and adds support for all
> wildcards supported by p4.
> Downside is that there is probably a 20%-ish slowdown with this approach.
>
> [pw: redo code and tests]
>
> Signed-off-by: Kazuki Saitoh <ksaitoh560@xxxxxxxxx>
> Signed-off-by: Pete Wyckoff <pw@xxxxxxxx>
This was whitespace-damaged in the message I received, so what is
queued is after manual fix-up. Please double check what will be
queued on 'pu' later and Ack, and then I'll move it to 'next' and
'master'.
Thanks.
> ---
> git-p4.py | 223 +++++++++++++++++---------------------------------------------
> 1 file changed, 59 insertions(+), 164 deletions(-)
>
> diff --git a/git-p4.py b/git-p4.py
> index 31e71ff..1793e86 100755
> --- a/git-p4.py
> +++ b/git-p4.py
> @@ -780,11 +780,14 @@ def getClientSpec():
> # dictionary of all client parameters
> entry = specList[0]
>
> + # the //client/ name
> + client_name = entry["Client"]
> +
> # just the keys that start with "View"
> view_keys = [ k for k in entry.keys() if k.startswith("View") ]
>
> # hold this new View
> - view = View()
> + view = View(client_name)
>
> # append the lines, in order, to the view
> for view_num in range(len(view_keys)):
> @@ -1555,8 +1558,8 @@ class P4Submit(Command, P4UserMap):
> for b in body:
> labelTemplate += "\t" + b + "\n"
> labelTemplate += "View:\n"
> - for mapping in clientSpec.mappings:
> - labelTemplate += "\t%s\n" % mapping.depot_side.path
> + for depot_side in clientSpec.mappings:
> + labelTemplate += "\t%s\n" % depot_side
>
> if self.dry_run:
> print "Would create p4 label %s for tag" % name
> @@ -1568,7 +1571,7 @@ class P4Submit(Command, P4UserMap):
>
> # Use the label
> p4_system(["tag", "-l", name] +
> - ["%s@%s" % (mapping.depot_side.path,
> changelist) for mapping in clientSpec.mappings])
> + ["%s@%s" % (depot_side, changelist) for
> depot_side in clientSpec.mappings])
>
> if verbose:
> print "created p4 label for tag %s" % name
> @@ -1796,117 +1799,16 @@ class View(object):
> """Represent a p4 view ("p4 help views"), and map files in a
> repo according to the view."""
>
> - class Path(object):
> - """A depot or client path, possibly containing wildcards.
> - The only one supported is ... at the end, currently.
> - Initialize with the full path, with //depot or //client."""
> -
> - def __init__(self, path, is_depot):
> - self.path = path
> - self.is_depot = is_depot
> - self.find_wildcards()
> - # remember the prefix bit, useful for relative mappings
> - m = re.match("(//[^/]+/)", self.path)
> - if not m:
> - die("Path %s does not start with //prefix/" % self.path)
> - prefix = m.group(1)
> - if not self.is_depot:
> - # strip //client/ on client paths
> - self.path = self.path[len(prefix):]
> -
> - def find_wildcards(self):
> - """Make sure wildcards are valid, and set up internal
> - variables."""
> -
> - self.ends_triple_dot = False
> - # There are three wildcards allowed in p4 views
> - # (see "p4 help views"). This code knows how to
> - # handle "..." (only at the end), but cannot deal with
> - # "%%n" or "*". Only check the depot_side, as p4 should
> - # validate that the client_side matches too.
> - if re.search(r'%%[1-9]', self.path):
> - die("Can't handle %%n wildcards in view: %s" % self.path)
> - if self.path.find("*") >= 0:
> - die("Can't handle * wildcards in view: %s" % self.path)
> - triple_dot_index = self.path.find("...")
> - if triple_dot_index >= 0:
> - if triple_dot_index != len(self.path) - 3:
> - die("Can handle only single ... wildcard, at end: %s" %
> - self.path)
> - self.ends_triple_dot = True
> -
> - def ensure_compatible(self, other_path):
> - """Make sure the wildcards agree."""
> - if self.ends_triple_dot != other_path.ends_triple_dot:
> - die("Both paths must end with ... if either does;\n" +
> - "paths: %s %s" % (self.path, other_path.path))
> -
> - def match_wildcards(self, test_path):
> - """See if this test_path matches us, and fill in the value
> - of the wildcards if so. Returns a tuple of
> - (True|False, wildcards[]). For now, only the ... at end
> - is supported, so at most one wildcard."""
> - if self.ends_triple_dot:
> - dotless = self.path[:-3]
> - if test_path.startswith(dotless):
> - wildcard = test_path[len(dotless):]
> - return (True, [ wildcard ])
> - else:
> - if test_path == self.path:
> - return (True, [])
> - return (False, [])
> -
> - def match(self, test_path):
> - """Just return if it matches; don't bother with the wildcards."""
> - b, _ = self.match_wildcards(test_path)
> - return b
> -
> - def fill_in_wildcards(self, wildcards):
> - """Return the relative path, with the wildcards filled in
> - if there are any."""
> - if self.ends_triple_dot:
> - return self.path[:-3] + wildcards[0]
> - else:
> - return self.path
> -
> - class Mapping(object):
> - def __init__(self, depot_side, client_side, overlay, exclude):
> - # depot_side is without the trailing /... if it had one
> - self.depot_side = View.Path(depot_side, is_depot=True)
> - self.client_side = View.Path(client_side, is_depot=False)
> - self.overlay = overlay # started with "+"
> - self.exclude = exclude # started with "-"
> - assert not (self.overlay and self.exclude)
> - self.depot_side.ensure_compatible(self.client_side)
> -
> - def __str__(self):
> - c = " "
> - if self.overlay:
> - c = "+"
> - if self.exclude:
> - c = "-"
> - return "View.Mapping: %s%s -> %s" % \
> - (c, self.depot_side.path, self.client_side.path)
> -
> - def map_depot_to_client(self, depot_path):
> - """Calculate the client path if using this mapping on the
> - given depot path; does not consider the effect of other
> - mappings in a view. Even excluded mappings are returned."""
> - matches, wildcards = self.depot_side.match_wildcards(depot_path)
> - if not matches:
> - return ""
> - client_path = self.client_side.fill_in_wildcards(wildcards)
> - return client_path
> -
> - #
> - # View methods
> - #
> - def __init__(self):
> + def __init__(self, client_name):
> self.mappings = []
> + self.client_prefix = "//%s/" % client_name
> + # cache results of "p4 where" to lookup client file locations
> + self.client_spec_path_cache = {}
>
> def append(self, view_line):
> """Parse a view line, splitting it into depot and client
> - sides. Append to self.mappings, preserving order."""
> + sides. Append to self.mappings, preserving order. This
> + is only needed for tag creation."""
>
> # Split the view line into exactly two words. P4 enforces
> # structure on these lines that simplifies this quite a bit.
> @@ -1934,76 +1836,62 @@ class View(object):
> depot_side = view_line[0:space_index]
> rhs_index = space_index + 1
>
> - if view_line[rhs_index] == '"':
> - # Second word is double quoted. Make sure there is a
> - # double quote at the end too.
> - if not view_line.endswith('"'):
> - die("View line with rhs quote should end with one: %s" %
> - view_line)
> - # skip the quotes
> - client_side = view_line[rhs_index+1:-1]
> - else:
> - client_side = view_line[rhs_index:]
> -
> # prefix + means overlay on previous mapping
> - overlay = False
> if depot_side.startswith("+"):
> - overlay = True
> depot_side = depot_side[1:]
>
> - # prefix - means exclude this path
> + # prefix - means exclude this path, leave out of mappings
> exclude = False
> if depot_side.startswith("-"):
> exclude = True
> depot_side = depot_side[1:]
>
> - m = View.Mapping(depot_side, client_side, overlay, exclude)
> - self.mappings.append(m)
> + if not exclude:
> + self.mappings.append(depot_side)
>
> - def map_in_client(self, depot_path):
> - """Return the relative location in the client where this
> - depot file should live. Returns "" if the file should
> - not be mapped in the client."""
> + def convert_client_path(self, clientFile):
> + # chop off //client/ part to make it relative
> + if not clientFile.startswith(self.client_prefix):
> + die("No prefix '%s' on clientFile '%s'" %
> + (self.client_prefix, clientFile))
> + return clientFile[len(self.client_prefix):]
>
> - paths_filled = []
> - client_path = ""
> + def update_client_spec_path_cache(self, files):
> + """ Caching file paths by "p4 where" batch query """
>
> - # look at later entries first
> - for m in self.mappings[::-1]:
> + # List depot file paths exclude that already cached
> + fileArgs = [f['path'] for f in files if f['path'] not in
> self.client_spec_path_cache]
>
> - # see where will this path end up in the client
> - p = m.map_depot_to_client(depot_path)
> + if len(fileArgs) == 0:
> + return # All files in cache
>
> - if p == "":
> - # Depot path does not belong in client. Must remember
> - # this, as previous items should not cause files to
> - # exist in this path either. Remember that the list is
> - # being walked from the end, which has higher precedence.
> - # Overlap mappings do not exclude previous mappings.
> - if not m.overlay:
> - paths_filled.append(m.client_side)
> + where_result = p4CmdList(["-x", "-", "where"], stdin=fileArgs)
> + for res in where_result:
> + if "code" in res and res["code"] == "error":
> + # assume error is "... file(s) not in client view"
> + continue
> + if "clientFile" not in res:
> + die("No clientFile from 'p4 where %s'" % depot_path)
> + if "unmap" in res:
> + # it will list all of them, but only one not unmap-ped
> + continue
> + self.client_spec_path_cache[res['depotFile']] =
> self.convert_client_path(res["clientFile"])
>
> - else:
> - # This mapping matched; no need to search any further.
> - # But, the mapping could be rejected if the client path
> - # has already been claimed by an earlier mapping (i.e.
> - # one later in the list, which we are walking backwards).
> - already_mapped_in_client = False
> - for f in paths_filled:
> - # this is View.Path.match
> - if f.match(p):
> - already_mapped_in_client = True
> - break
> - if not already_mapped_in_client:
> - # Include this file, unless it is from a line that
> - # explicitly said to exclude it.
> - if not m.exclude:
> - client_path = p
> + # not found files or unmap files set to ""
> + for depotFile in fileArgs:
> + if depotFile not in self.client_spec_path_cache:
> + self.client_spec_path_cache[depotFile] = ""
>
> - # a match, even if rejected, always stops the search
> - break
> + def map_in_client(self, depot_path):
> + """Return the relative location in the client where this
> + depot file should live. Returns "" if the file should
> + not be mapped in the client."""
>
> - return client_path
> + if depot_path in self.client_spec_path_cache:
> + return self.client_spec_path_cache[depot_path]
> +
> + die( "Error: %s is not found in client spec path" % depot_path )
> + return ""
>
> class P4Sync(Command, P4UserMap):
> delete_actions = ( "delete", "move/delete", "purge" )
> @@ -2130,6 +2018,10 @@ class P4Sync(Command, P4UserMap):
> """Look at each depotFile in the commit to figure out to what
> branch it belongs."""
>
> + if self.clientSpecDirs:
> + files = self.extractFilesFromCommit(commit)
> + self.clientSpecDirs.update_client_spec_path_cache(files)
> +
> branches = {}
> fnum = 0
> while commit.has_key("depotFile%s" % fnum):
> @@ -2379,6 +2271,9 @@ class P4Sync(Command, P4UserMap):
> else:
> sys.stderr.write("Ignoring file outside of prefix:
> %s\n" % f['path'])
>
> + if self.clientSpecDirs:
> + self.clientSpecDirs.update_client_spec_path_cache(files)
> +
> self.gitStream.write("commit %s\n" % branch)
> # gitStream.write("mark :%s\n" % details["change"])
> self.committedChanges.add(int(details["change"]))
--
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