vocab-platforms ( vocab -- platforms )
Factor handbook » The language » Vocabulary loader » Vocabulary metadata

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Vocabulary
vocabs.metadata

Inputs

vocab

a vocabulary specifier

Outputs

platforms

a sequence of operating system symbols

Word description
Outputs a list of operating systems supported by vocab, as specified by the platforms.txt file in the vocabulary's directory. Outputs an empty array if the file doesn't exist.

Notes
Operating system symbols are defined in the system vocabulary.

Definition

USING: kernel sequences words ;

IN: vocabs.metadata

: vocab-platforms ( vocab -- platforms )
    "platforms.txt" vocab-file-lines
    [ dup "system" lookup-word [ ] [ bad-platform ] ?if ] map ;