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-# js-codepage
-
-[Codepages](https://en.wikipedia.org/wiki/Codepage) are character encodings. In
-many contexts, single- or double-byte character sets are used in lieu of Unicode
-encodings. The codepages map between characters and numbers.
-
-## Setup
-
-In node:
-
-```js
-var cptable = require('codepage');
-```
-
-In the browser:
-
-```html
-
-
-```
-
-Alternatively, use the full version in the dist folder:
-
-```html
-
-```
-
-The complete set of codepages is large due to some Double Byte Character Set
-encodings. A much smaller file that only includes SBCS codepages is provided in
-this repo (`sbcs.js`), as well as a file for other projects (`cpexcel.js`)
-
-If you know which codepages you need, you can include individual scripts for
-each codepage. The individual files are provided in the `bits/` directory.
-For example, to include only the Mac codepages:
-
-```html
-
-
-
-
-
-
-```
-
-All of the browser scripts define and append to the `cptable` object. To rename
-the object, edit the `JSVAR` shell variable in `make.sh` and run the script.
-
-The utilities functions are contained in `cputils.js`, which assumes that the
-appropriate codepage scripts were loaded.
-
-The script will manipulate `module.exports` if available . This is not always
-desirable. To prevent the behavior, define `DO_NOT_EXPORT_CODEPAGE`.
-
-## Usage
-
-Most codepages are indexed by number. To get the Unicode character for a given
-codepoint, use the `dec` property:
-
-```js
-var unicode_cp10000_255 = cptable[10000].dec[255]; // ˇ
-```
-
-To get the codepoint for a given character, use the `enc` property:
-
-```js
-var cp10000_711 = cptable[10000].enc[String.fromCharCode(711)]; // 255
-```
-
-There are a few utilities that deal with strings and buffers:
-
-```js
-var 汇总 = cptable.utils.decode(936, [0xbb,0xe3,0xd7,0xdc]);
-var buf = cptable.utils.encode(936, 汇总);
-var sushi= cptable.utils.decode(65001, [0xf0,0x9f,0x8d,0xa3]); // 🍣
-var sbuf = cptable.utils.encode(65001, sushi);
-```
-
-`cptable.utils.encode(CP, data, ofmt)` accepts a String or Array of characters
-and returns a representation controlled by `ofmt`:
-
-- Default output is a Buffer (or Array) of bytes (integers between 0 and 255)
-- If `ofmt == 'str'`, return a binary String (byte `i` is `o.charCodeAt(i)`)
-- If `ofmt == 'arr'`, return an Array of bytes
-
-`cptable.utils.decode(CP, data)` accepts a byte String or Array of numbers or
-Buffer and returns a JS string.
-
-## Known Excel Codepages
-
-A much smaller script, including only the codepages known to be used in Excel,
-is available under the name `cpexcel`. It exposes the same variable `cptable`
-and is suitable as a drop-in replacement when the full codepage tables are not
-needed.
-
-In node:
-
-```js
-var cptable = require('codepage/dist/cpexcel.full');
-```
-
-## Rolling your own script
-
-The `make.sh` script in the repo can take a manifest and generate JS source.
-
-Usage:
-
-```bash
-$ bash make.sh path_to_manifest output_file_name JSVAR
-```
-
-where
-
-- `JSVAR` is the name of the exported variable (generally `cptable`)
-- `output_file_name` is the output file (`cpexcel.js`, `cptable.js`, ...)
-- `path_to_manifest` is the path to the manifest file.
-
-The manifest file is expected to be a CSV with 3 columns:
-
-```
-,,
-```
-
-If a source is specified, it will try to download the specified file and parse.
-The file format is expected to follow the format from the unicode.org site.
-The size should be `1` for a single-byte codepage and `2` for a double-byte
-codepage. For mixed codepages (which use some single- and some double-byte
-codes), the script assumes the mapping is a prefix code and generates efficient
-JS code.
-
-Generated scripts only include the mapping. `cat` a mapping with `cputils.js`
-to produce a complete script like `cpexcel.full.js`.
-
-## Building the complete script
-
-This script uses [voc](npm.im/voc). The script to build the codepage tables and
-the JS source is `codepage.md`, so building involves `voc codepage.md`.
-
-## Generated Codepages
-
-The complete list of codepages can be found in the file `pages.csv`.
-
-Some codepages are easier to implement algorithmically. Since those character
-tables are not generated, there is no corresponding entry (they are "magic").
-
-| CP# | Source | Description |
-|--------:|:-----------:|:-----------------------------------------------------|
-| ` 37` | unicode.org | IBM EBCDIC US-Canada |
-| ` 437` | unicode.org | OEM United States |
-| ` 500` | unicode.org | IBM EBCDIC International |
-| ` 620` | NLS | Mazovia (Polish) MS-DOS |
-| ` 708` | Windows 7 | Arabic (ASMO 708) |
-| ` 720` | Windows 7 | Arabic (Transparent ASMO); Arabic (DOS) |
-| ` 737` | unicode.org | OEM Greek (formerly 437G); Greek (DOS) |
-| ` 775` | unicode.org | OEM Baltic; Baltic (DOS) |
-| ` 808` | unicode.org | OEM Russian; Cyrillic + Euro symbol |
-| ` 850` | unicode.org | OEM Multilingual Latin 1; Western European (DOS) |
-| ` 852` | unicode.org | OEM Latin 2; Central European (DOS) |
-| ` 855` | unicode.org | OEM Cyrillic (primarily Russian) |
-| ` 857` | unicode.org | OEM Turkish; Turkish (DOS) |
-| ` 858` | Windows 7 | OEM Multilingual Latin 1 + Euro symbol |
-| ` 860` | unicode.org | OEM Portuguese; Portuguese (DOS) |
-| ` 861` | unicode.org | OEM Icelandic; Icelandic (DOS) |
-| ` 862` | unicode.org | OEM Hebrew; Hebrew (DOS) |
-| ` 863` | unicode.org | OEM French Canadian; French Canadian (DOS) |
-| ` 864` | unicode.org | OEM Arabic; Arabic (864) |
-| ` 865` | unicode.org | OEM Nordic; Nordic (DOS) |
-| ` 866` | unicode.org | OEM Russian; Cyrillic (DOS) |
-| ` 869` | unicode.org | OEM Modern Greek; Greek, Modern (DOS) |
-| ` 870` | Windows 7 | IBM EBCDIC Multilingual/ROECE (Latin 2) |
-| ` 872` | unicode.org | OEM Cyrillic (primarily Russian) + Euro Symbol |
-| ` 874` | unicode.org | Windows Thai |
-| ` 875` | unicode.org | IBM EBCDIC Greek Modern |
-| ` 895` | NLS | Kamenický (Czech) MS-DOS |
-| ` 932` | unicode.org | Japanese Shift-JIS |
-| ` 936` | unicode.org | Simplified Chinese GBK |
-| ` 949` | unicode.org | Korean |
-| ` 950` | unicode.org | Traditional Chinese Big5 |
-| ` 1010` | IBM | IBM EBCDIC French |
-| ` 1026` | unicode.org | IBM EBCDIC Turkish (Latin 5) |
-| ` 1047` | Windows 7 | IBM EBCDIC Latin 1/Open System |
-| ` 1132` | IBM | IBM EBCDIC Lao (1132 / 1133 / 1341) |
-| ` 1140` | Windows 7 | IBM EBCDIC US-Canada (037 + Euro symbol) |
-| ` 1141` | Windows 7 | IBM EBCDIC Germany (20273 + Euro symbol) |
-| ` 1142` | Windows 7 | IBM EBCDIC Denmark-Norway (20277 + Euro symbol) |
-| ` 1143` | Windows 7 | IBM EBCDIC Finland-Sweden (20278 + Euro symbol) |
-| ` 1144` | Windows 7 | IBM EBCDIC Italy (20280 + Euro symbol) |
-| ` 1145` | Windows 7 | IBM EBCDIC Latin America-Spain (20284 + Euro symbol) |
-| ` 1146` | Windows 7 | IBM EBCDIC United Kingdom (20285 + Euro symbol) |
-| ` 1147` | Windows 7 | IBM EBCDIC France (20297 + Euro symbol) |
-| ` 1148` | Windows 7 | IBM EBCDIC International (500 + Euro symbol) |
-| ` 1149` | Windows 7 | IBM EBCDIC Icelandic (20871 + Euro symbol) |
-| ` 1200` | magic | Unicode UTF-16, little endian (BMP of ISO 10646) |
-| ` 1201` | magic | Unicode UTF-16, big endian |
-| ` 1250` | unicode.org | Windows Central Europe |
-| ` 1251` | unicode.org | Windows Cyrillic |
-| ` 1252` | unicode.org | Windows Latin I |
-| ` 1253` | unicode.org | Windows Greek |
-| ` 1254` | unicode.org | Windows Turkish |
-| ` 1255` | unicode.org | Windows Hebrew |
-| ` 1256` | unicode.org | Windows Arabic |
-| ` 1257` | unicode.org | Windows Baltic |
-| ` 1258` | unicode.org | Windows Vietnam |
-| ` 1361` | Windows 7 | Korean (Johab) |
-| `10000` | unicode.org | MAC Roman |
-| `10001` | Windows 7 | Japanese (Mac) |
-| `10002` | Windows 7 | MAC Traditional Chinese (Big5) |
-| `10003` | Windows 7 | Korean (Mac) |
-| `10004` | Windows 7 | Arabic (Mac) |
-| `10005` | Windows 7 | Hebrew (Mac) |
-| `10006` | unicode.org | Greek (Mac) |
-| `10007` | unicode.org | Cyrillic (Mac) |
-| `10008` | Windows 7 | MAC Simplified Chinese (GB 2312) |
-| `10010` | Windows 7 | Romanian (Mac) |
-| `10017` | Windows 7 | Ukrainian (Mac) |
-| `10021` | Windows 7 | Thai (Mac) |
-| `10029` | unicode.org | MAC Latin 2 (Central European) |
-| `10079` | unicode.org | Icelandic (Mac) |
-| `10081` | unicode.org | Turkish (Mac) |
-| `10082` | Windows 7 | Croatian (Mac) |
-| `12000` | magic | Unicode UTF-32, little endian byte order |
-| `12001` | magic | Unicode UTF-32, big endian byte order |
-| `20000` | Windows 7 | CNS Taiwan (Chinese Traditional) |
-| `20001` | Windows 7 | TCA Taiwan |
-| `20002` | Windows 7 | ETEN Taiwan (Chinese Traditional) |
-| `20003` | Windows 7 | IBM5550 Taiwan |
-| `20004` | Windows 7 | TeleText Taiwan |
-| `20005` | Windows 7 | Wang Taiwan |
-| `20105` | Windows 7 | Western European IA5 (IRV International Alphabet 5) |
-| `20106` | Windows 7 | IA5 German (7-bit) |
-| `20107` | Windows 7 | IA5 Swedish (7-bit) |
-| `20108` | Windows 7 | IA5 Norwegian (7-bit) |
-| `20127` | magic | US-ASCII (7-bit) |
-| `20261` | Windows 7 | T.61 |
-| `20269` | Windows 7 | ISO 6937 Non-Spacing Accent |
-| `20273` | Windows 7 | IBM EBCDIC Germany |
-| `20277` | Windows 7 | IBM EBCDIC Denmark-Norway |
-| `20278` | Windows 7 | IBM EBCDIC Finland-Sweden |
-| `20280` | Windows 7 | IBM EBCDIC Italy |
-| `20284` | Windows 7 | IBM EBCDIC Latin America-Spain |
-| `20285` | Windows 7 | IBM EBCDIC United Kingdom |
-| `20290` | Windows 7 | IBM EBCDIC Japanese Katakana Extended |
-| `20297` | Windows 7 | IBM EBCDIC France |
-| `20420` | Windows 7 | IBM EBCDIC Arabic |
-| `20423` | Windows 7 | IBM EBCDIC Greek |
-| `20424` | Windows 7 | IBM EBCDIC Hebrew |
-| `20833` | Windows 7 | IBM EBCDIC Korean Extended |
-| `20838` | Windows 7 | IBM EBCDIC Thai |
-| `20866` | Windows 7 | Russian Cyrillic (KOI8-R) |
-| `20871` | Windows 7 | IBM EBCDIC Icelandic |
-| `20880` | Windows 7 | IBM EBCDIC Cyrillic Russian |
-| `20905` | Windows 7 | IBM EBCDIC Turkish |
-| `20924` | Windows 7 | IBM EBCDIC Latin 1/Open System (1047 + Euro symbol) |
-| `20932` | Windows 7 | Japanese (JIS 0208-1990 and 0212-1990) |
-| `20936` | Windows 7 | Simplified Chinese (GB2312-80) |
-| `20949` | Windows 7 | Korean Wansung |
-| `21025` | Windows 7 | IBM EBCDIC Cyrillic Serbian-Bulgarian |
-| `21027` | NLS | Extended/Ext Alpha Lowercase |
-| `21866` | Windows 7 | Ukrainian Cyrillic (KOI8-U) |
-| `28591` | unicode.org | ISO 8859-1 Latin 1 (Western European) |
-| `28592` | unicode.org | ISO 8859-2 Latin 2 (Central European) |
-| `28593` | unicode.org | ISO 8859-3 Latin 3 |
-| `28594` | unicode.org | ISO 8859-4 Baltic |
-| `28595` | unicode.org | ISO 8859-5 Cyrillic |
-| `28596` | unicode.org | ISO 8859-6 Arabic |
-| `28597` | unicode.org | ISO 8859-7 Greek |
-| `28598` | unicode.org | ISO 8859-8 Hebrew (ISO-Visual) |
-| `28599` | unicode.org | ISO 8859-9 Turkish |
-| `28600` | unicode.org | ISO 8859-10 Latin 6 |
-| `28601` | unicode.org | ISO 8859-11 Latin (Thai) |
-| `28603` | unicode.org | ISO 8859-13 Latin 7 (Estonian) |
-| `28604` | unicode.org | ISO 8859-14 Latin 8 (Celtic) |
-| `28605` | unicode.org | ISO 8859-15 Latin 9 |
-| `28606` | unicode.org | ISO 8859-15 Latin 10 |
-| `29001` | Windows 7 | Europa 3 |
-| `38598` | Windows 7 | ISO 8859-8 Hebrew (ISO-Logical) |
-| `47451` | unicode.org | Atari ST/TT |
-| `50220` | magic | ISO 2022 JIS Japanese with no halfwidth Katakana |
-| `50221` | magic | ISO 2022 JIS Japanese with halfwidth Katakana |
-| `50222` | magic | ISO 2022 Japanese JIS X 0201-1989 (1 byte Kana-SO/SI)|
-| `50225` | magic | ISO 2022 Korean |
-| `50227` | magic | ISO 2022 Simplified Chinese |
-| `51932` | Windows 7 | EUC Japanese |
-| `51936` | Windows 7 | EUC Simplified Chinese |
-| `51949` | Windows 7 | EUC Korean |
-| `52936` | Windows 7 | HZ-GB2312 Simplified Chinese |
-| `54936` | Windows 7 | GB18030 Simplified Chinese (4 byte) |
-| `57002` | Windows 7 | ISCII Devanagari |
-| `57003` | Windows 7 | ISCII Bengali |
-| `57004` | Windows 7 | ISCII Tamil |
-| `57005` | Windows 7 | ISCII Telugu |
-| `57006` | Windows 7 | ISCII Assamese |
-| `57007` | Windows 7 | ISCII Oriya |
-| `57008` | Windows 7 | ISCII Kannada |
-| `57009` | Windows 7 | ISCII Malayalam |
-| `57010` | Windows 7 | ISCII Gujarati |
-| `57011` | Windows 7 | ISCII Punjabi |
-| `65000` | magic | Unicode (UTF-7) |
-| `65001` | magic | Unicode (UTF-8) |
-
-`unicode.org` refers to the Unicode Consortium Public Mappings, a database of
-various mappings between Unicode characters and respective character sets. The
-tables are processed by a few scripts in the build process.
-
-`IBM` refers to the IBM coded character set database. Even though IBM uses a
-different numbering scheme from Windows, the IBM numbers are used when there is
-no conflict. The tables are manually generated from the symbol manifests.
-
-`Windows 7` refers to direct inspection of Windows 7 machines using .NET class
-`System.Text.Encoding`. The enclosed `MakeEncoding.cs` C# program brute-forces
-code pages. `MakeEncoding.cs` deviates from unicode.org in some cases. When they
-map a given code to different characters, unicode.org value is used. When
-unicode.org does not prescribe a value, `MakeEncoding.cs` value is used.
-
-`NLS` refers to the National Language Support files supplied in various versions
-of Windows. In older versions of Windows (like Windows 98) these files followed
-the name pattern `CP_#.NLS`, but newer versions use the name pattern `C_#.NLS`.
-
-## Testing
-
-`make test` will run the nodejs-based test.
-
-To run the in-browser tests, run a local server and go to the `ctest` directory.
-`make ctestserv` will start a python `SimpleHTTPServer` server on port 8000.
-
-To update the browser artifacts, run `make ctest`.
-
-## Sources
-
-- [Unicode Consortium Public Mappings](http://www.unicode.org/Public/MAPPINGS/)
-- [Windows Code Page Enumeration](http://msdn.microsoft.com/en-us/library/cc195051.aspx)
-- [Windows Code Page Identifiers](http://msdn.microsoft.com/en-us/library/windows/desktop/dd317756.aspx)
-- [IBM Coded Character Sets](https://www-01.ibm.com/software/globalization/ccsid/ccsid_registered.html)
-- [ISO/IEC 2022 / ECMA-35](https://www.ecma-international.org/publications/files/ECMA-ST/Ecma-035.pdf)
-- [International Register of Coded Character Sets To Be Used With Escape Sequences](https://www.itscj.ipsj.or.jp/itscj_english/iso-ir/ISO-IR.pdf)
-- [Japanese Character Encoding for Internet Messages](https://tools.ietf.org/html/rfc1468)
-
-## License
-
-Please consult the attached LICENSE file for details. All rights not explicitly
-granted by the Apache 2.0 license are reserved by the Original Author.
-
-## Badges
-
-[](https://saucelabs.com/u/codepage)
-
-[](https://travis-ci.org/SheetJS/js-codepage)
-
-[](https://coveralls.io/r/SheetJS/js-codepage?branch=master)
-
-[](https://github.com/SheetJS/js-codepage)