Functions to convert between the spacing and capitalization conventions of various environments

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Symbol Munger

A Common Lisp library to make it easy to change the capitalization and spacing of a "sentence". This is used for converting between space & capitalization rules of various systems.

  • Converts to and from lisp, english, underscores and camel-case
  • Useful for converting database column names to lisp-symbols and english column header names
  • Useful for converting between common lisp variables names and javascript variable names
  • Removes excess word separators along the way (:foo--bar => "Foo Bar")
  • All conversion "->" functions accept lisp-trees of strings, symbols, and other lisp objects.
  • all lisp objects (other than the tree structure which is flattened) are converted by symbol-munger::%coerce-to-string into strings.
  • Each object part is treated as a separate word



(s &key (capitalize :each-word) (word-separators #\space) word-separators-to-replace stream in-place)

  • Will recapitalize a string and replace word-separators with a standard one (in-place if desired and possible)
  • If s is a lisp tree, then each part will be %coerce-to-string'ed and treated as a separate part of the phrase being normalized (ie: each part implicitly starts a new word)
  • Will write to a stream if given it otherwise.
  • Defaults to capitalizing each word but can be any of
  • {:each-word :first-word T (:all is an alias for T) nil :but-first-word (likeJavaScript) }
  • word-separators are used to distinguish new words for the purposes of capitalization
  • The first of these will be used to replace word-separators-to-replace
  • word-separators-to-replace helps normalize word separators so that spaces or underscores become the appropriate word-separator.
  • If this contains :capitals it assumes capital letters indicate a new word separation

returns a string (new or the one passed in if in-place) unless :stream is provided"


Converts a common lisp symbol (or symbol-name) into an english phrase

:a-symbol-like-this becomes "A Symbol Like This"

english->lisp-symbol & english->keyword

Converts an english phrase into a common lisp symbol (the keyword variant just specifies the keyword package)

"A Symbol Like This" becomes :a-symbol-like-this

Many other similar functions

See The Tests For Working Examples

  • english->lisp-symbol

  • english->lisp-name

  • english->keyword

  • english->camel-case

  • english->studly-case

  • english->underscores

  • lisp->english

  • lisp->camel-case

  • lisp->underscores

  • lisp->studly-caps

  • camel-case->english

  • camel-case->lisp-name

  • camel-case->lisp-symbol

  • camel-case->keyword

  • camel-case->underscores

  • underscores->english

  • underscores->lisp-name

  • underscores->lisp-symbol

  • underscores->keyword

  • underscores->camel-case

  • underscores->studly-caps


Dependencies (3)

  • alexandria
  • iterate
  • lisp-unit2
  • GitHub
  • Quicklisp