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480 lines
17 KiB
Python
480 lines
17 KiB
Python
"""\
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usage: ttx [options] inputfile1 [... inputfileN]
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TTX -- From OpenType To XML And Back
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If an input file is a TrueType or OpenType font file, it will be
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decompiled to a TTX file (an XML-based text format).
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If an input file is a TTX file, it will be compiled to whatever
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format the data is in, a TrueType or OpenType/CFF font file.
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A special input value of - means read from the standard input.
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Output files are created so they are unique: an existing file is
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never overwritten.
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General options
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===============
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-h Help print this message.
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--version show version and exit.
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-d <outputfolder> Specify a directory where the output files are
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to be created.
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-o <outputfile> Specify a file to write the output to. A special
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value of - would use the standard output.
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-f Overwrite existing output file(s), ie. don't append
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numbers.
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-v Verbose: more messages will be written to stdout
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about what is being done.
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-q Quiet: No messages will be written to stdout about
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what is being done.
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-a allow virtual glyphs ID's on compile or decompile.
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Dump options
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============
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-l List table info: instead of dumping to a TTX file, list
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some minimal info about each table.
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-t <table> Specify a table to dump. Multiple -t options
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are allowed. When no -t option is specified, all tables
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will be dumped.
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-x <table> Specify a table to exclude from the dump. Multiple
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-x options are allowed. -t and -x are mutually exclusive.
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-s Split tables: save the TTX data into separate TTX files per
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table and write one small TTX file that contains references
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to the individual table dumps. This file can be used as
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input to ttx, as long as the table files are in the
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same directory.
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-g Split glyf table: Save the glyf data into separate TTX files
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per glyph and write a small TTX for the glyf table which
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contains references to the individual TTGlyph elements.
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NOTE: specifying -g implies -s (no need for -s together
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with -g)
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-i Do NOT disassemble TT instructions: when this option is
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given, all TrueType programs (glyph programs, the font
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program and the pre-program) will be written to the TTX
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file as hex data instead of assembly. This saves some time
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and makes the TTX file smaller.
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-z <format> Specify a bitmap data export option for EBDT:
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{'raw', 'row', 'bitwise', 'extfile'} or for the CBDT:
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{'raw', 'extfile'} Each option does one of the following:
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-z raw
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export the bitmap data as a hex dump
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-z row
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export each row as hex data
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-z bitwise
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export each row as binary in an ASCII art style
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-z extfile
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export the data as external files with XML references
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If no export format is specified 'raw' format is used.
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-e Don't ignore decompilation errors, but show a full traceback
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and abort.
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-y <number> Select font number for TrueType Collection (.ttc/.otc),
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starting from 0.
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--unicodedata <UnicodeData.txt>
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Use custom database file to write character names in the
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comments of the cmap TTX output.
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--newline <value>
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Control how line endings are written in the XML file. It
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can be 'LF', 'CR', or 'CRLF'. If not specified, the
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default platform-specific line endings are used.
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Compile options
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===============
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-m Merge with TrueType-input-file: specify a TrueType or
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OpenType font file to be merged with the TTX file. This
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option is only valid when at most one TTX file is specified.
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-b Don't recalc glyph bounding boxes: use the values in the
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TTX file as-is.
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--recalc-timestamp
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Set font 'modified' timestamp to current time.
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By default, the modification time of the TTX file will be
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used.
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--no-recalc-timestamp
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Keep the original font 'modified' timestamp.
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--flavor <type>
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Specify flavor of output font file. May be 'woff' or 'woff2'.
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Note that WOFF2 requires the Brotli Python extension,
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available at https://github.com/google/brotli
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--with-zopfli
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Use Zopfli instead of Zlib to compress WOFF. The Python
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extension is available at https://pypi.python.org/pypi/zopfli
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--optimize-font-speed
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Enable optimizations that prioritize speed over file size.
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This mainly affects how glyf t able and gvar / VARC tables are
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compiled. The produced fonts will be larger, but rendering
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performance will be improved with HarfBuzz and other text
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layout engines.
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"""
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from fontTools.ttLib import OPTIMIZE_FONT_SPEED, TTFont, TTLibError
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from fontTools.misc.macCreatorType import getMacCreatorAndType
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from fontTools.unicode import setUnicodeData
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from fontTools.misc.textTools import Tag, tostr
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from fontTools.misc.timeTools import timestampSinceEpoch
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from fontTools.misc.loggingTools import Timer
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from fontTools.misc.cliTools import makeOutputFileName
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import os
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import sys
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import getopt
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import re
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import logging
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log = logging.getLogger("fontTools.ttx")
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opentypeheaderRE = re.compile("""sfntVersion=['"]OTTO["']""")
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class Options(object):
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listTables = False
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outputDir = None
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outputFile = None
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overWrite = False
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verbose = False
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quiet = False
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splitTables = False
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splitGlyphs = False
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disassembleInstructions = True
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mergeFile = None
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recalcBBoxes = True
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ignoreDecompileErrors = True
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bitmapGlyphDataFormat = "raw"
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unicodedata = None
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newlinestr = "\n"
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recalcTimestamp = None
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flavor = None
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useZopfli = False
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optimizeFontSpeed = False
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def __init__(self, rawOptions, numFiles):
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self.onlyTables = []
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self.skipTables = []
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self.fontNumber = -1
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for option, value in rawOptions:
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# general options
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if option == "-h":
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print(__doc__)
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sys.exit(0)
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elif option == "--version":
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from fontTools import version
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print(version)
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sys.exit(0)
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elif option == "-d":
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if not os.path.isdir(value):
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raise getopt.GetoptError(
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"The -d option value must be an existing directory"
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)
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self.outputDir = value
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elif option == "-o":
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self.outputFile = value
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elif option == "-f":
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self.overWrite = True
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elif option == "-v":
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self.verbose = True
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elif option == "-q":
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self.quiet = True
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# dump options
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elif option == "-l":
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self.listTables = True
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elif option == "-t":
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# pad with space if table tag length is less than 4
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value = value.ljust(4)
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self.onlyTables.append(value)
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elif option == "-x":
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# pad with space if table tag length is less than 4
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value = value.ljust(4)
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self.skipTables.append(value)
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elif option == "-s":
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self.splitTables = True
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elif option == "-g":
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# -g implies (and forces) splitTables
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self.splitGlyphs = True
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self.splitTables = True
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elif option == "-i":
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self.disassembleInstructions = False
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elif option == "-z":
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validOptions = ("raw", "row", "bitwise", "extfile")
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if value not in validOptions:
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raise getopt.GetoptError(
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"-z does not allow %s as a format. Use %s"
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% (option, validOptions)
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)
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self.bitmapGlyphDataFormat = value
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elif option == "-y":
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self.fontNumber = int(value)
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# compile options
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elif option == "-m":
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self.mergeFile = value
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elif option == "-b":
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self.recalcBBoxes = False
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elif option == "-e":
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self.ignoreDecompileErrors = False
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elif option == "--unicodedata":
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self.unicodedata = value
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elif option == "--newline":
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validOptions = ("LF", "CR", "CRLF")
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if value == "LF":
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self.newlinestr = "\n"
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elif value == "CR":
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self.newlinestr = "\r"
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elif value == "CRLF":
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self.newlinestr = "\r\n"
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else:
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raise getopt.GetoptError(
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"Invalid choice for --newline: %r (choose from %s)"
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% (value, ", ".join(map(repr, validOptions)))
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)
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elif option == "--recalc-timestamp":
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self.recalcTimestamp = True
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elif option == "--no-recalc-timestamp":
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self.recalcTimestamp = False
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elif option == "--flavor":
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self.flavor = value
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elif option == "--with-zopfli":
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self.useZopfli = True
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elif option == "--optimize-font-speed":
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self.optimizeFontSpeed = True
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if self.verbose and self.quiet:
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raise getopt.GetoptError("-q and -v options are mutually exclusive")
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if self.verbose:
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self.logLevel = logging.DEBUG
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elif self.quiet:
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self.logLevel = logging.WARNING
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else:
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self.logLevel = logging.INFO
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if self.mergeFile and self.flavor:
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raise getopt.GetoptError("-m and --flavor options are mutually exclusive")
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if self.onlyTables and self.skipTables:
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raise getopt.GetoptError("-t and -x options are mutually exclusive")
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if self.mergeFile and numFiles > 1:
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raise getopt.GetoptError(
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"Must specify exactly one TTX source file when using -m"
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)
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if self.flavor != "woff" and self.useZopfli:
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raise getopt.GetoptError("--with-zopfli option requires --flavor 'woff'")
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def ttList(input, output, options):
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ttf = TTFont(input, fontNumber=options.fontNumber, lazy=True)
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reader = ttf.reader
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tags = sorted(reader.keys())
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print('Listing table info for "%s":' % input)
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format = " %4s %10s %8s %8s"
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print(format % ("tag ", " checksum", " length", " offset"))
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print(format % ("----", "----------", "--------", "--------"))
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for tag in tags:
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entry = reader.tables[tag]
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if ttf.flavor == "woff2":
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# WOFF2 doesn't store table checksums, so they must be calculated
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from fontTools.ttLib.sfnt import calcChecksum
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data = entry.loadData(reader.transformBuffer)
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checkSum = calcChecksum(data)
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else:
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checkSum = int(entry.checkSum)
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if checkSum < 0:
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checkSum = checkSum + 0x100000000
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checksum = "0x%08X" % checkSum
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print(format % (tag, checksum, entry.length, entry.offset))
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print()
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ttf.close()
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@Timer(log, "Done dumping TTX in %(time).3f seconds")
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def ttDump(input, output, options):
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input_name = input
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if input == "-":
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input, input_name = sys.stdin.buffer, sys.stdin.name
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output_name = output
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if output == "-":
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output, output_name = sys.stdout, sys.stdout.name
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log.info('Dumping "%s" to "%s"...', input_name, output_name)
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if options.unicodedata:
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setUnicodeData(options.unicodedata)
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ttf = TTFont(
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input,
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0,
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ignoreDecompileErrors=options.ignoreDecompileErrors,
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fontNumber=options.fontNumber,
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)
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ttf.saveXML(
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output,
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tables=options.onlyTables,
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skipTables=options.skipTables,
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splitTables=options.splitTables,
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splitGlyphs=options.splitGlyphs,
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disassembleInstructions=options.disassembleInstructions,
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bitmapGlyphDataFormat=options.bitmapGlyphDataFormat,
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newlinestr=options.newlinestr,
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)
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ttf.close()
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@Timer(log, "Done compiling TTX in %(time).3f seconds")
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def ttCompile(input, output, options):
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input_name = input
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if input == "-":
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input, input_name = sys.stdin, sys.stdin.name
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output_name = output
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if output == "-":
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output, output_name = sys.stdout.buffer, sys.stdout.name
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log.info('Compiling "%s" to "%s"...' % (input_name, output))
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if options.useZopfli:
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from fontTools.ttLib import sfnt
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sfnt.USE_ZOPFLI = True
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ttf = TTFont(
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options.mergeFile,
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flavor=options.flavor,
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recalcBBoxes=options.recalcBBoxes,
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recalcTimestamp=options.recalcTimestamp,
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)
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if options.optimizeFontSpeed:
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ttf.cfg[OPTIMIZE_FONT_SPEED] = options.optimizeFontSpeed
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ttf.importXML(input)
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if options.recalcTimestamp is None and "head" in ttf and input is not sys.stdin:
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# use TTX file modification time for head "modified" timestamp
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mtime = os.path.getmtime(input)
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ttf["head"].modified = timestampSinceEpoch(mtime)
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ttf.save(output)
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def guessFileType(fileName):
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if fileName == "-":
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header = sys.stdin.buffer.peek(256)
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ext = ""
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else:
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base, ext = os.path.splitext(fileName)
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try:
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with open(fileName, "rb") as f:
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header = f.read(256)
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except IOError:
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return None
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if header.startswith(b"\xef\xbb\xbf<?xml"):
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header = header.lstrip(b"\xef\xbb\xbf")
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cr, tp = getMacCreatorAndType(fileName)
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if tp in ("sfnt", "FFIL"):
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return "TTF"
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if ext == ".dfont":
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return "TTF"
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head = Tag(header[:4])
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if head == "OTTO":
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return "OTF"
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elif head == "ttcf":
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return "TTC"
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elif head in ("\0\1\0\0", "true"):
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return "TTF"
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elif head == "wOFF":
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return "WOFF"
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elif head == "wOF2":
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return "WOFF2"
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elif head == "<?xm":
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# Use 'latin1' because that can't fail.
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header = tostr(header, "latin1")
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if opentypeheaderRE.search(header):
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return "OTX"
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else:
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return "TTX"
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return None
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def parseOptions(args):
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rawOptions, files = getopt.gnu_getopt(
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args,
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"ld:o:fvqht:x:sgim:z:baey:",
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[
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"unicodedata=",
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"recalc-timestamp",
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"no-recalc-timestamp",
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"flavor=",
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"version",
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"with-zopfli",
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"newline=",
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"optimize-font-speed",
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],
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)
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options = Options(rawOptions, len(files))
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jobs = []
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if not files:
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raise getopt.GetoptError("Must specify at least one input file")
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for input in files:
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if input != "-" and not os.path.isfile(input):
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raise getopt.GetoptError('File not found: "%s"' % input)
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tp = guessFileType(input)
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if tp in ("OTF", "TTF", "TTC", "WOFF", "WOFF2"):
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extension = ".ttx"
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if options.listTables:
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action = ttList
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else:
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action = ttDump
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elif tp == "TTX":
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extension = "." + options.flavor if options.flavor else ".ttf"
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action = ttCompile
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elif tp == "OTX":
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extension = "." + options.flavor if options.flavor else ".otf"
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action = ttCompile
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else:
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raise getopt.GetoptError('Unknown file type: "%s"' % input)
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if options.outputFile:
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output = options.outputFile
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else:
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if input == "-":
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raise getopt.GetoptError("Must provide -o when reading from stdin")
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output = makeOutputFileName(
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input, options.outputDir, extension, options.overWrite
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)
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# 'touch' output file to avoid race condition in choosing file names
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if action != ttList:
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open(output, "a").close()
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jobs.append((action, input, output))
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return jobs, options
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def process(jobs, options):
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for action, input, output in jobs:
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action(input, output, options)
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|
|
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def main(args=None):
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"""Convert OpenType fonts to XML and back"""
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from fontTools import configLogger
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if args is None:
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args = sys.argv[1:]
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try:
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jobs, options = parseOptions(args)
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except getopt.GetoptError as e:
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print("%s\nERROR: %s" % (__doc__, e), file=sys.stderr)
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sys.exit(2)
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configLogger(level=options.logLevel)
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try:
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process(jobs, options)
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except KeyboardInterrupt:
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log.error("(Cancelled.)")
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sys.exit(1)
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except SystemExit:
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raise
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except TTLibError as e:
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log.error(e)
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sys.exit(1)
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except:
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log.exception("Unhandled exception has occurred")
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sys.exit(1)
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if __name__ == "__main__":
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sys.exit(main())
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