Remove submodule, just put Dependencies in ./libs
This commit is contained in:
Ruud
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"""
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X11 Portable Compiled Font (pcf) parser.
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Documents:
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- Format for X11 pcf bitmap font files
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http://fontforge.sourceforge.net/pcf-format.html
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(file is based on the X11 sources)
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Author: Victor Stinner
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Creation date: 2007-03-20
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"""
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from hachoir_parser import Parser
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from hachoir_core.field import (FieldSet, Enum,
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UInt8, UInt32, Bytes, RawBytes, NullBytes,
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Bit, Bits, PaddingBits, CString)
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from hachoir_core.endian import LITTLE_ENDIAN, BIG_ENDIAN
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from hachoir_core.text_handler import textHandler, hexadecimal, filesizeHandler
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from hachoir_core.tools import paddingSize
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class TOC(FieldSet):
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TYPE_NAME = {
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0x00000001: "Properties",
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0x00000002: "Accelerators",
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0x00000004: "Metrics",
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0x00000008: "Bitmaps",
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0x00000010: "Ink metrics",
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0x00000020: "BDF encodings",
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0x00000040: "SWidths",
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0x00000080: "Glyph names",
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0x00000100: "BDF accelerators",
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}
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FORMAT_NAME = {
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0x00000000: "Default",
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0x00000200: "Ink bounds",
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0x00000100: "Accelerator W ink bounds",
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# 0x00000200: "Compressed metrics",
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}
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def createFields(self):
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yield Enum(UInt32(self, "type"), self.TYPE_NAME)
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yield UInt32(self, "format")
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yield filesizeHandler(UInt32(self, "size"))
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yield UInt32(self, "offset")
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def createDescription(self):
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return "%s at %s (%s)" % (
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self["type"].display, self["offset"].value, self["size"].display)
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class PropertiesFormat(FieldSet):
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static_size = 32
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endian = LITTLE_ENDIAN
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def createFields(self):
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yield Bits(self, "reserved[]", 2)
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yield Bit(self, "byte_big_endian")
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yield Bit(self, "bit_big_endian")
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yield Bits(self, "scan_unit", 2)
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yield textHandler(PaddingBits(self, "reserved[]", 26), hexadecimal)
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class Property(FieldSet):
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def createFields(self):
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yield UInt32(self, "name_offset")
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yield UInt8(self, "is_string")
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yield UInt32(self, "value_offset")
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def createDescription(self):
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# FIXME: Use link or any better way to read name value
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name = self["../name[%s]" % (self.index-2)].value
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return "Property %s" % name
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class GlyphNames(FieldSet):
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def __init__(self, parent, name, toc, description, size=None):
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FieldSet.__init__(self, parent, name, description, size=size)
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self.toc = toc
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if self["format/byte_big_endian"].value:
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self.endian = BIG_ENDIAN
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else:
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self.endian = LITTLE_ENDIAN
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def createFields(self):
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yield PropertiesFormat(self, "format")
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yield UInt32(self, "count")
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offsets = []
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for index in xrange(self["count"].value):
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offset = UInt32(self, "offset[]")
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yield offset
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offsets.append(offset.value)
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yield UInt32(self, "total_str_length")
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offsets.sort()
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offset0 = self.current_size // 8
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for offset in offsets:
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padding = self.seekByte(offset0+offset)
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if padding:
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yield padding
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yield CString(self, "name[]")
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padding = (self.size - self.current_size) // 8
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if padding:
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yield NullBytes(self, "end_padding", padding)
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class Properties(GlyphNames):
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def createFields(self):
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yield PropertiesFormat(self, "format")
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yield UInt32(self, "nb_prop")
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properties = []
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for index in xrange(self["nb_prop"].value):
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property = Property(self, "property[]")
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yield property
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properties.append(property)
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padding = paddingSize(self.current_size//8, 4)
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if padding:
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yield NullBytes(self, "padding", padding)
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yield UInt32(self, "total_str_length")
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properties.sort(key=lambda entry: entry["name_offset"].value)
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offset0 = self.current_size // 8
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for property in properties:
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padding = self.seekByte(offset0+property["name_offset"].value)
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if padding:
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yield padding
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yield CString(self, "name[]", "Name of %s" % property.name)
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if property["is_string"].value:
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yield CString(self, "value[]", "Value of %s" % property.name)
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padding = (self.size - self.current_size) // 8
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if padding:
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yield NullBytes(self, "end_padding", padding)
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class PcfFile(Parser):
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MAGIC = "\1fcp"
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PARSER_TAGS = {
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"id": "pcf",
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"category": "misc",
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"file_ext": ("pcf",),
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"magic": ((MAGIC, 0),),
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"min_size": 32, # FIXME
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"description": "X11 Portable Compiled Font (pcf)",
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}
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endian = LITTLE_ENDIAN
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def validate(self):
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if self["signature"].value != self.MAGIC:
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return "Invalid signature"
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return True
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def createFields(self):
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yield Bytes(self, "signature", 4, r'File signature ("\1pcf")')
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yield UInt32(self, "nb_toc")
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entries = []
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for index in xrange(self["nb_toc"].value):
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entry = TOC(self, "toc[]")
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yield entry
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entries.append(entry)
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entries.sort(key=lambda entry: entry["offset"].value)
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for entry in entries:
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size = entry["size"].value
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padding = self.seekByte(entry["offset"].value)
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if padding:
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yield padding
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maxsize = (self.size-self.current_size)//8
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if maxsize < size:
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self.warning("Truncate content of %s to %s bytes (was %s)" % (entry.path, maxsize, size))
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size = maxsize
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if not size:
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continue
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if entry["type"].value == 1:
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yield Properties(self, "properties", entry, "Properties", size=size*8)
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elif entry["type"].value == 128:
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yield GlyphNames(self, "glyph_names", entry, "Glyph names", size=size*8)
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else:
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yield RawBytes(self, "data[]", size, "Content of %s" % entry.path)
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