EtherCalc

• Introduction:
  • English: https://gist.github.com/3978463
  • 中文版: https://gist.github.com/3985324
• Language: LiveScript
• Runtime: Node.js (0.8+ preferred)
• Services: Redis (2.4+; fall-back to on-disk JSON storage if not present)
  • Multi-server is supported only when running with Redis
  • Note to Redis 2.2 users (e.g. on Ubuntu 12.04): Please disable the timeout 300 setting in /etc/redis.conf, or upgrade to Redis 2.4+ if possible at all. For more details, see #49.
• Browsers tested: Safari, Chrome, Firefox, IE.
• Integrated with content management systems:
  • Socialtext
  • Drupal
• Overview:
  • English: http://ethercalc.net/
  • 中文版: http://ethercalc.tw/

Installation

npm i -g ethercalc
ethercalc

Or install with our Docker image, which comes with a built-in Redis server and webworker-threads support:

# Runs at port 6967
sudo docker run -d -p 6967:6967 -v /var/lib/redis:/redis:rw audreyt/ethercalc

# Runs at another port, for example 8080
sudo docker run -d -p 8080:6967 -v /var/lib/redis:/redis:rw audreyt/ethercalc

Note the use of -v flag to store the Redis database in /var/lib/redis on the host server. In Docker versions 0.4.x, the flag was called -b instead.

REST API

Note that POST endpoints accept only application/json requests, and will reject regular form posts.

GET /_/page

Fetch the page as a serialization in SocialCalc save format.

PUT /_/page

Replaces the page with a serialization in SocialCalc save format.

Also takes a CSV structure that contains the new spreadsheet's content.

POST /_

Takes a JSON structure with room and snapshot fields.

Replaces the page with a serialization in Socialtext save format. If room is not specified, returns a new page.

Also takes a CSV structure that contains the new spreadsheet's content.

POST /_/page

Takes a JSON structure with a command field (either as a string or an array of strings), or a plain-text command string.

Runs one or more commands specified in the command field.

Also takes a CSV structure that contains fields to be appended to the first column after the last row.

GET /_/page/cells

Returns a JSON representation of all defined cells in the page.

GET /_/page/cells/A1

Returns a JSON representation of a single cell in the page.

GET /_/page/html

Returns a HTML rendering of the page. (GET /page.html also works.)

GET /_/page/csv

Returns a CSV rendering of the page. (GET /page.csv also works.)

Flags

Using SSL: --keyfile / --certfile

openssl genrsa -out ethercalc-key.pem 1024
openssl req -new -key ethercalc-key.pem -out certrequest.csr
openssl x509 -req -in certrequest.csr -signkey ethercalc-key.pem -out ethercalc-cert.pem
ethercalc --keyfile ethercalc-key.pem --certfile ethercalc-cert.pem

Prefers polling over Websocket: --polling

Useful when running behind a proxy without WebSocket support.

Enable Cross-Origin Resource Sharing: --cors

Useful when setting up EtherCalc as a public REST API server.

URL Prefix: --basepath /path/prefix

Useful when running under an URL rewriter.

Access Control: --key secret

Offers read-write vs. read-only modes. See issues #1 and #4 for details on setting this up.

Disable server-side WebWorkers: --vm

Runs a single-thread background loop with vm.createContext instead of webworker-threads.

Useful for running custom functions in server side that requires full VM access.

Expires inactive spreadsheets: --expire 86400

Deletes a spreadsheet's content after N seconds of inactivity. Activities include accessing with REST API as well as Web UI, including moving the active cell cursor on an opened page.

Licensing

Common Public Attribution License (Socialtext Inc.)

• socialcalcspreadsheetcontrol.js
• socialcalctableeditor.js
• images/*

Artistic License 2.0 (Socialtext Inc.)

• formatnumber2.js
• formula1.js
• socialcalc-3.js
• socialcalcconstants.js
• socialcalcpopup.js

MIT License (John Resig, The Dojo Foundation)

• static/jquery.js

CC0 Public Domain (唐鳳)

• src/*.ls