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#!/usr/bin/python
import sys
from lxml import etree as ET
# this does not recognize octal unlike int(s, 0)
def intdh(s):
if s.startswith("0x"):
return int(s[2:], 16)
else:
return int(s)
if sys.argv[1:2]:
xml = sys.argv[1]
tree = ET.parse(xml)
else:
tree = ET.parse(sys.stdin)
root = tree.getroot();
# TODO: make this configurable and autoselect the most frequent
reg_default = "reg32"
type_defaults = set(("enum", "bitfield", "hexa"))
attr_defaults = {"prefix" : "none"}
true_strings = ("1", "yes", "true")
ns = "{http://nouveau.freedesktop.org/}"
out = sys.stdout
indent = ""
comments = {}
empty_line = False
def process(container):
global indent
indent += "\t"
_process(container)
indent = indent[:-1]
def get_pos(elem, which):
pos = elem.attrib.get(which, None)
if pos is not None:
return intdh(pos)
else:
return intdh(elem.attrib.get("pos", "-1"))
def _process(container):
global empty_line
maxvalue = max([-1] + [max(intdh(elem.attrib.get("offset", "-1")), intdh(elem.attrib.get("value", "-1"))) for elem in container.iterchildren(tag=ET.Element)])
maxlow = max([-1] + [get_pos(elem, "low") for elem in container.iterchildren(tag=ET.Element)])
maxhigh = max([-1] + [get_pos(elem, "high") for elem in container.iterchildren(tag=ET.Element)])
any_multibit = False
for elem in container.iterchildren(tag=ET.Element):
if "low" in elem.attrib and "high" in elem.attrib and elem.attrib["low"] != elem.attrib["high"]:
any_multibit = True
break
value_hexdigits = len(hex(maxvalue)) - 2 if maxvalue >= 0 else -1
offset_format = "%0" + str(value_hexdigits) + "x" if maxvalue >= 0 else None
if maxvalue >= 16:
value_len = value_hexdigits + 2
# TODO: smart pretty print value instead of this
value_format = "0x%0" + str(value_hexdigits) + "x"
elif maxvalue >= 0:
value_len = len(str(maxvalue))
# TODO: smart pretty print value instead of this
value_format = "%" + str(value_len) + "d"
else:
value_len = -1
value_format = None
low_format = "%0" + str(len(str(maxlow))) + "d" if maxlow >= 0 else None
high_format = "%0" + str(len(str(maxhigh))) + "d" if maxhigh >= 0 else None
for elem in container.iterchildren(tag=ET.Element):
tag = elem.tag
assert tag.startswith(ns)
tag = tag[len(ns):]
if tag == "brief" or tag == "doc":
continue
is_reglike = False
line = ""
if ((tag[:3] == "reg" and tag[3:].isdigit()) or tag == "array" or tag == "stripe") and "offset" in elem.attrib:
line = offset_format % (intdh(elem.attrib.get("offset", -1)),)
del elem.attrib["offset"]
if "stride" in elem.attrib:
line += " {" + elem.attrib["stride"] + "}"
del elem.attrib["stride"]
if "length" in elem.attrib:
line += " [" + elem.attrib["length"] + "]"
del elem.attrib["length"]
if "name" in elem.attrib:
line += " " + elem.attrib["name"]
del elem.attrib["name"]
is_reglike = True
elif tag == "bitfield":
if "low" not in elem.attrib and "pos" not in elem.attrib:
print >> sys.stderr, "Bitfield " + elem.attrib.get("name", "<unnamed>") + " has no low bit!"
low = get_pos(elem, "low")
high = get_pos(elem, "high")
if high < 0:
high = low
if low != high:
line = low_format % (low,) + "-" + high_format % (high,)
elif any_multibit:
# line = (" " * (len(str(maxlow)))) + low_format % (low,) + (" " * (len(str(maxhigh)) - len(str(maxlow)) + 1))
line = low_format % (low,) + (" " * (len(str(maxhigh)) + 1))
else:
line = low_format % (low,)
if "pos" in elem.attrib:
del elem.attrib["pos"]
if "low" in elem.attrib:
del elem.attrib["low"]
if "high" in elem.attrib:
del elem.attrib["high"]
elif tag == "value":
if "value" in elem.attrib:
line = (value_format % (intdh(elem.attrib["value"]),))
if "name" in elem.attrib:
line += " = "
del elem.attrib["value"]
else:
if "name" not in elem.attrib:
print >> sys.stderr, "Value has no value and no name attributes!"
if value_len >= 0:
line += " " * (value_len + 3)
if "name" in elem.attrib:
line += elem.attrib["name"]
del elem.attrib["name"]
elif tag == "import":
line = "#import"
if "file" in elem.attrib:
file = elem.attrib["file"]
line += " \"" + file + "\""
else:
print >> sys.stderr, "Import with no file attribute!"
del elem.attrib["file"]
elif tag[:4] == "use-":
line = "use " + tag[4:]
else:
line = tag
if "name" in elem.attrib:
line += " " + elem.attrib["name"]
del elem.attrib["name"]
if is_reglike or tag == "bitfield":
need_regwidth = tag[:3] == "reg" and tag != reg_default
if ("type" in elem.attrib and elem.attrib["type"] not in type_defaults) or need_regwidth:
line += " " + elem.attrib.get("type", "reg").replace(" ", ",") + (":" + tag[3:] if need_regwidth else "")
if "type" in elem.attrib:
del elem.attrib["type"]
brief = "\n".join([elem2.text for elem2 in elem.iterchildren(tag=ET.Element) if elem2.tag == ns + "brief"])
if brief:
line += " \"" + brief + "\""
if "varset" in elem.attrib and "variants" in elem.attrib:
elem.attrib["variants"] = elem.attrib["varset"] + "=" + elem.attrib["variants"]
del elem.attrib["varset"]
for keyword in ("inline", "bare"):
if keyword in elem.attrib:
if elem.attrib[keyword].lower() in true_strings:
line = keyword + " " + line
del elem.attrib[keyword]
for attr in elem.attrib.keys():
value = elem.attrib[attr]
if value != attr_defaults.get(attr):
line += " " + (attr if attr != "variants" else "") + "(" + value + ")"
if is_reglike:
if tag == "array":
line += " ="
elif tag == "stripe":
line += " :="
elif tag == "bitfield" or tag == "value" or tag == "import" or tag[:4] == "use-":
pass
else:
line += ":"
our_comments = comments.get(elem, [])
if our_comments:
line += " // " + our_comments[0]
if empty_line:
print
empty_line = False
print indent + line
if len(our_comments) > 1:
for comment in our_comments[1:]:
print indent + "\t// " + comment
doc = "\n".join([elem2.text for elem2 in elem.iterchildren(tag=ET.Element) if elem2.tag == ns + "doc"])
if doc:
lines = [line.strip() for line in doc.split("\n")]
while lines and not lines[0]:
lines = lines[1:]
while lines and not lines[-1]:
lines = lines[:-1]
for line in lines:
print indent + "\t: " + line
process(elem)
if elem.tail and elem.tail.count("\n") > 1:
empty_line = True
last_non_comment = None
for node in root.iter():
if isinstance(node, ET._Comment) and last_non_comment is not None:
# reattach whitespace following comment to previous node
prev = node.getprevious()
if prev is not None:
prev.tail = (prev.tail if prev.tail else "") + node.tail
else:
prev = node.getparent()
if prev is not None:
prev.text = (prev.text if prev.text else "") + node.tail
node.getparent().remove(node)
lines = node.text.split("\n")
queue = []
got_anything = comments.get(last_non_comment) is not None
for line in lines:
line = line.strip()
if line or got_anything:
queue.append(line)
if line:
comments.setdefault(last_non_comment, []).extend(queue)
queue = []
got_anything = True
else:
last_non_comment = node
_process(root)
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