{"nwo":"BosNaufal\/react-simple-pwa","sha":"5260ec6b87ec0dd6864d2697104f555672c0d567","path":"src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py","language":"python","identifier":"get_table_directory","parameters":"(data)","argument_list":"","return_statement":"return font","docstring":"read the SFNT header and table directory","docstring_summary":"read the SFNT header and table directory","docstring_tokens":["read","the","SFNT","header","and","table","directory"],"function":"def get_table_directory(data):\n    \"\"\"read the SFNT header and table directory\"\"\"\n    datalen = len(data)\n    sfntsize = struct.calcsize(OpenType.SFNT_UNPACK)\n    if sfntsize > datalen:\n        raise FontError, 'truncated font data'\n    sfntvers, numTables = struct.unpack(OpenType.SFNT_UNPACK, data[:sfntsize])[:2]\n    if sfntvers != OpenType.SFNT_CFF and sfntvers != OpenType.SFNT_TRUE:\n        raise FontError, 'invalid font type';\n    \n    font = {}\n    font['version'] = sfntvers\n    font['numTables'] = numTables\n    \n    # create set of offsets, lengths for tables\n    table_dir_size = struct.calcsize(OpenType.TABLE_DIR_UNPACK)\n    if sfntsize + table_dir_size * numTables > datalen:\n        raise FontError, 'truncated font data, table directory extends past end of data'\n    table_dir = {}\n    for i in range(0, numTables):\n        start = sfntsize + i * table_dir_size\n        end = start + table_dir_size\n        tag, check, bongo, dirlen = struct.unpack(OpenType.TABLE_DIR_UNPACK, data[start:end])\n        table_dir[tag] = {'offset': bongo, 'length': dirlen, 'checksum': check}\n    \n    font['tableDir'] = table_dir\n    \n    return font","function_tokens":["def","get_table_directory","(","data",")",":","datalen","=","len","(","data",")","sfntsize","=","struct",".","calcsize","(","OpenType",".","SFNT_UNPACK",")","if","sfntsize",">","datalen",":","raise","FontError",",","'truncated font data'","sfntvers",",","numTables","=","struct",".","unpack","(","OpenType",".","SFNT_UNPACK",",","data","[",":","sfntsize","]",")","[",":","2","]","if","sfntvers","!=","OpenType",".","SFNT_CFF","and","sfntvers","!=","OpenType",".","SFNT_TRUE",":","raise","FontError",",","'invalid font type'","font","=","{","}","font","[","'version'","]","=","sfntvers","font","[","'numTables'","]","=","numTables","# create set of offsets, lengths for tables","table_dir_size","=","struct",".","calcsize","(","OpenType",".","TABLE_DIR_UNPACK",")","if","sfntsize","+","table_dir_size","*","numTables",">","datalen",":","raise","FontError",",","'truncated font data, table directory extends past end of data'","table_dir","=","{","}","for","i","in","range","(","0",",","numTables",")",":","start","=","sfntsize","+","i","*","table_dir_size","end","=","start","+","table_dir_size","tag",",","check",",","bongo",",","dirlen","=","struct",".","unpack","(","OpenType",".","TABLE_DIR_UNPACK",",","data","[","start",":","end","]",")","table_dir","[","tag","]","=","{","'offset'",":","bongo",",","'length'",":","dirlen",",","'checksum'",":","check","}","font","[","'tableDir'","]","=","table_dir","return","font"],"url":"https:\/\/github.com\/BosNaufal\/react-simple-pwa\/blob\/5260ec6b87ec0dd6864d2697104f555672c0d567\/src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py#L287-L314"}
{"nwo":"BosNaufal\/react-simple-pwa","sha":"5260ec6b87ec0dd6864d2697104f555672c0d567","path":"src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py","language":"python","identifier":"get_name_records","parameters":"(nametable)","argument_list":"","return_statement":"return name","docstring":"reads through the name records within name table","docstring_summary":"reads through the name records within name table","docstring_tokens":["reads","through","the","name","records","within","name","table"],"function":"def get_name_records(nametable):\n    \"\"\"reads through the name records within name table\"\"\"\n    name = {}\n    # read the header\n    headersize = 6\n    count, strOffset = struct.unpack('>2H', nametable[2:6])\n    namerecsize = struct.calcsize(OpenType.NAME_RECORD_UNPACK)\n    if count * namerecsize + headersize > len(nametable):\n        raise FontError, 'names exceed size of name table'\n    name['count'] = count\n    name['strOffset'] = strOffset\n    \n    # read through the name records\n    namerecs = {}\n    for i in range(0, count):\n        start = headersize + i * namerecsize\n        end = start + namerecsize\n        platformID, encodingID, languageID, nameID, namelen, offset = struct.unpack(OpenType.NAME_RECORD_UNPACK, nametable[start:end])\n        if platformID != OpenType.PLATFORM_ID_MICROSOFT or \\\n           encodingID != OpenType.ENCODING_ID_MICROSOFT_UNICODEBMP or \\\n           languageID != OpenType.LANG_ID_MICROSOFT_EN_US:\n            continue\n        namerecs[nameID] = {'offset': offset, 'length': namelen}\n        \n    name['namerecords'] = namerecs\n    return name","function_tokens":["def","get_name_records","(","nametable",")",":","name","=","{","}","# read the header","headersize","=","6","count",",","strOffset","=","struct",".","unpack","(","'>2H'",",","nametable","[","2",":","6","]",")","namerecsize","=","struct",".","calcsize","(","OpenType",".","NAME_RECORD_UNPACK",")","if","count","*","namerecsize","+","headersize",">","len","(","nametable",")",":","raise","FontError",",","'names exceed size of name table'","name","[","'count'","]","=","count","name","[","'strOffset'","]","=","strOffset","# read through the name records","namerecs","=","{","}","for","i","in","range","(","0",",","count",")",":","start","=","headersize","+","i","*","namerecsize","end","=","start","+","namerecsize","platformID",",","encodingID",",","languageID",",","nameID",",","namelen",",","offset","=","struct",".","unpack","(","OpenType",".","NAME_RECORD_UNPACK",",","nametable","[","start",":","end","]",")","if","platformID","!=","OpenType",".","PLATFORM_ID_MICROSOFT","or","encodingID","!=","OpenType",".","ENCODING_ID_MICROSOFT_UNICODEBMP","or","languageID","!=","OpenType",".","LANG_ID_MICROSOFT_EN_US",":","continue","namerecs","[","nameID","]","=","{","'offset'",":","offset",",","'length'",":","namelen","}","name","[","'namerecords'","]","=","namerecs","return","name"],"url":"https:\/\/github.com\/BosNaufal\/react-simple-pwa\/blob\/5260ec6b87ec0dd6864d2697104f555672c0d567\/src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py#L316-L341"}
{"nwo":"BosNaufal\/react-simple-pwa","sha":"5260ec6b87ec0dd6864d2697104f555672c0d567","path":"src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py","language":"python","identifier":"make_eot_name_headers","parameters":"(fontdata, nameTableDir)","argument_list":"","return_statement":"return ''.join(nameheaders)","docstring":"extracts names from the name table and generates the names header portion of the EOT header","docstring_summary":"extracts names from the name table and generates the names header portion of the EOT header","docstring_tokens":["extracts","names","from","the","name","table","and","generates","the","names","header","portion","of","the","EOT","header"],"function":"def make_eot_name_headers(fontdata, nameTableDir):\n    \"\"\"extracts names from the name table and generates the names header portion of the EOT header\"\"\"\n    nameoffset = nameTableDir['offset']\n    namelen = nameTableDir['length']\n    name = get_name_records(fontdata[nameoffset : nameoffset + namelen])\n    namestroffset = name['strOffset']\n    namerecs = name['namerecords']\n    \n    eotnames = (OpenType.NAME_ID_FAMILY, OpenType.NAME_ID_STYLE, OpenType.NAME_ID_VERSION, OpenType.NAME_ID_FULL)\n    nameheaders = []\n    for nameid in eotnames:\n        if nameid in namerecs:\n            namerecord = namerecs[nameid]\n            noffset = namerecord['offset']\n            nlen = namerecord['length']\n            nformat = '%dH' % (nlen \/ 2)\t\t# length is in number of bytes\n            start = nameoffset + namestroffset + noffset\n            end = start + nlen\n            nstr = struct.unpack('>' + nformat, fontdata[start:end])\n            nameheaders.append(struct.pack('<H' + nformat + '2x', nlen, *nstr))\n        else:\n            nameheaders.append(struct.pack('4x'))  # len = 0, padding = 0\n    \n    return ''.join(nameheaders)","function_tokens":["def","make_eot_name_headers","(","fontdata",",","nameTableDir",")",":","nameoffset","=","nameTableDir","[","'offset'","]","namelen","=","nameTableDir","[","'length'","]","name","=","get_name_records","(","fontdata","[","nameoffset",":","nameoffset","+","namelen","]",")","namestroffset","=","name","[","'strOffset'","]","namerecs","=","name","[","'namerecords'","]","eotnames","=","(","OpenType",".","NAME_ID_FAMILY",",","OpenType",".","NAME_ID_STYLE",",","OpenType",".","NAME_ID_VERSION",",","OpenType",".","NAME_ID_FULL",")","nameheaders","=","[","]","for","nameid","in","eotnames",":","if","nameid","in","namerecs",":","namerecord","=","namerecs","[","nameid","]","noffset","=","namerecord","[","'offset'","]","nlen","=","namerecord","[","'length'","]","nformat","=","'%dH'","%","(","nlen","\/","2",")","# length is in number of bytes","start","=","nameoffset","+","namestroffset","+","noffset","end","=","start","+","nlen","nstr","=","struct",".","unpack","(","'>'","+","nformat",",","fontdata","[","start",":","end","]",")","nameheaders",".","append","(","struct",".","pack","(","'<H'","+","nformat","+","'2x'",",","nlen",",","*","nstr",")",")","else",":","nameheaders",".","append","(","struct",".","pack","(","'4x'",")",")","# len = 0, padding = 0","return","''",".","join","(","nameheaders",")"],"url":"https:\/\/github.com\/BosNaufal\/react-simple-pwa\/blob\/5260ec6b87ec0dd6864d2697104f555672c0d567\/src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py#L343-L366"}
{"nwo":"BosNaufal\/react-simple-pwa","sha":"5260ec6b87ec0dd6864d2697104f555672c0d567","path":"src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py","language":"python","identifier":"make_eot_header","parameters":"(fontdata)","argument_list":"","return_statement":"return ''.join((fixed, nameheaders, rootstring))","docstring":"given ttf font data produce an EOT header","docstring_summary":"given ttf font data produce an EOT header","docstring_tokens":["given","ttf","font","data","produce","an","EOT","header"],"function":"def make_eot_header(fontdata):\n    \"\"\"given ttf font data produce an EOT header\"\"\"\n    fontDataSize = len(fontdata)\n    font = get_table_directory(fontdata)\n    \n    # toss out .otf fonts, t2embed library doesn't support these\n    tableDir = font['tableDir']\n    \n    # check for required tables\n    required = (OpenType.TABLE_HEAD, OpenType.TABLE_NAME, OpenType.TABLE_OS2)\n    for table in required:\n        if not (table in tableDir):\n            raise FontError, 'missing required table ' + multicharval(table)\n            \n    # read name strings\n    \n    # pull out data from individual tables to construct fixed header portion\n    # need to calculate eotSize before packing\n    version = EOT.EOT_VERSION\n    flags = 0\n    charset = EOT.EOT_DEFAULT_CHARSET\n    magicNumber = EOT.EOT_MAGIC_NUMBER\n    \n    # read values from OS\/2 table\n    os2Dir = tableDir[OpenType.TABLE_OS2]\n    os2offset = os2Dir['offset']\n    os2size = struct.calcsize(OpenType.OS2_UNPACK)\n    \n    if os2size > os2Dir['length']:\n        raise FontError, 'OS\/2 table invalid length'\n    \n    os2fields = struct.unpack(OpenType.OS2_UNPACK, fontdata[os2offset : os2offset + os2size])\n    \n    panose = []\n    urange = []\n    codepage = []\n    \n    weight, fsType = os2fields[:2]\n    panose[:10] = os2fields[2:12]\n    urange[:4] = os2fields[12:16]\n    fsSelection = os2fields[16]\n    codepage[:2] = os2fields[17:19]\n    \n    italic = fsSelection & OpenType.OS2_FSSELECTION_ITALIC\n    \n    # read in values from head table\n    headDir = tableDir[OpenType.TABLE_HEAD]\n    headoffset = headDir['offset']\n    headsize = struct.calcsize(OpenType.HEAD_UNPACK)\n    \n    if headsize > headDir['length']:\n        raise FontError, 'head table invalid length'\n        \n    headfields = struct.unpack(OpenType.HEAD_UNPACK, fontdata[headoffset : headoffset + headsize])\n    checkSumAdjustment = headfields[0]\n    \n    # make name headers\n    nameheaders = make_eot_name_headers(fontdata, tableDir[OpenType.TABLE_NAME])\n    rootstring = make_root_string()\n    \n    # calculate the total eot size\n    eotSize = struct.calcsize(EOT.EOT_HEADER_PACK) + len(nameheaders) + len(rootstring) + fontDataSize\n    fixed = struct.pack(EOT.EOT_HEADER_PACK,\n                        *([eotSize, fontDataSize, version, flags] + panose + [charset, italic] +\n                          [weight, fsType, magicNumber] + urange + codepage + [checkSumAdjustment]))\n    \n    return ''.join((fixed, nameheaders, rootstring))","function_tokens":["def","make_eot_header","(","fontdata",")",":","fontDataSize","=","len","(","fontdata",")","font","=","get_table_directory","(","fontdata",")","# toss out .otf fonts, t2embed library doesn't support these","tableDir","=","font","[","'tableDir'","]","# check for required tables","required","=","(","OpenType",".","TABLE_HEAD",",","OpenType",".","TABLE_NAME",",","OpenType",".","TABLE_OS2",")","for","table","in","required",":","if","not","(","table","in","tableDir",")",":","raise","FontError",",","'missing required table '","+","multicharval","(","table",")","# read name strings","# pull out data from individual tables to construct fixed header portion","# need to calculate eotSize before packing","version","=","EOT",".","EOT_VERSION","flags","=","0","charset","=","EOT",".","EOT_DEFAULT_CHARSET","magicNumber","=","EOT",".","EOT_MAGIC_NUMBER","# read values from OS\/2 table","os2Dir","=","tableDir","[","OpenType",".","TABLE_OS2","]","os2offset","=","os2Dir","[","'offset'","]","os2size","=","struct",".","calcsize","(","OpenType",".","OS2_UNPACK",")","if","os2size",">","os2Dir","[","'length'","]",":","raise","FontError",",","'OS\/2 table invalid length'","os2fields","=","struct",".","unpack","(","OpenType",".","OS2_UNPACK",",","fontdata","[","os2offset",":","os2offset","+","os2size","]",")","panose","=","[","]","urange","=","[","]","codepage","=","[","]","weight",",","fsType","=","os2fields","[",":","2","]","panose","[",":","10","]","=","os2fields","[","2",":","12","]","urange","[",":","4","]","=","os2fields","[","12",":","16","]","fsSelection","=","os2fields","[","16","]","codepage","[",":","2","]","=","os2fields","[","17",":","19","]","italic","=","fsSelection","&","OpenType",".","OS2_FSSELECTION_ITALIC","# read in values from head table","headDir","=","tableDir","[","OpenType",".","TABLE_HEAD","]","headoffset","=","headDir","[","'offset'","]","headsize","=","struct",".","calcsize","(","OpenType",".","HEAD_UNPACK",")","if","headsize",">","headDir","[","'length'","]",":","raise","FontError",",","'head table invalid length'","headfields","=","struct",".","unpack","(","OpenType",".","HEAD_UNPACK",",","fontdata","[","headoffset",":","headoffset","+","headsize","]",")","checkSumAdjustment","=","headfields","[","0","]","# make name headers","nameheaders","=","make_eot_name_headers","(","fontdata",",","tableDir","[","OpenType",".","TABLE_NAME","]",")","rootstring","=","make_root_string","(",")","# calculate the total eot size","eotSize","=","struct",".","calcsize","(","EOT",".","EOT_HEADER_PACK",")","+","len","(","nameheaders",")","+","len","(","rootstring",")","+","fontDataSize","fixed","=","struct",".","pack","(","EOT",".","EOT_HEADER_PACK",",","*","(","[","eotSize",",","fontDataSize",",","version",",","flags","]","+","panose","+","[","charset",",","italic","]","+","[","weight",",","fsType",",","magicNumber","]","+","urange","+","codepage","+","[","checkSumAdjustment","]",")",")","return","''",".","join","(","(","fixed",",","nameheaders",",","rootstring",")",")"],"url":"https:\/\/github.com\/BosNaufal\/react-simple-pwa\/blob\/5260ec6b87ec0dd6864d2697104f555672c0d567\/src\/vendor\/ionicons\/builder\/scripts\/eotlitetool.py#L372-L438"}