Building CLI with Swift

Transcript

1. IT Saturday • @aleks_voronov • Stanfy BUILDING CLI WITH SWIFT

   ALEXANDER VORONOV, STANFY @aleks_voronov

2. IT Saturday • @aleks_voronov • Stanfy REASON WHY?

3. IT Saturday • @aleks_voronov • Stanfy OTHER PLATFORMS

4. IT Saturday • @aleks_voronov • Stanfy JAVASCRIPT NODEJS NPM BOWER

   GULP GRUNT

5. IT Saturday • @aleks_voronov • Stanfy RUBY RACK RAILS SINATRA

   RUBYGEMS RAKE

6. IT Saturday • @aleks_voronov • Stanfy PYTHON PYPI PIP …

7. IT Saturday • @aleks_voronov • Stanfy SWIFT COCOAPODS CARTHAGE SPM

   PERFECT COMMANDANT

8. IT Saturday • @aleks_voronov • Stanfy FULLSTACK MULTIPLATFORM

9. IT Saturday • @aleks_voronov • Stanfy FULLSTACK MULTIPLATFORM

10. IT Saturday • @aleks_voronov • Stanfy WHAT IS CLI?

11. IT Saturday • @aleks_voronov • Stanfy WHAT IS CLI?

12. IT Saturday • @aleks_voronov • Stanfy CLI ARGUMENTS

13. IT Saturday • @aleks_voronov • Stanfy POSIX STANDARD SHORT FLAGS

    $ ls -a $ ruby -v $ git commit -m "..."

14. IT Saturday • @aleks_voronov • Stanfy GNU STANDARD LONG FLAGS

    $ ls --all $ ruby --version $ git commit --message "..."

15. IT Saturday • @aleks_voronov • Stanfy COMBINED FLAGS $ git

    commit -a -m "..." $ git commit -am "..."

16. IT Saturday • @aleks_voronov • Stanfy SUBCOMMANDS $ git log

    -2 $ git status $ git commit -am "..."

17. IT Saturday • @aleks_voronov • Stanfy STANDARD IO 0 -

    STDIN 1 - STDOUT 2 - STDERR

18. IT Saturday • @aleks_voronov • Stanfy 0 - STDIN 1

    - STDOUT 2 - STDERR $ cat nofile > cat: nofile: No such file or directory

19. IT Saturday • @aleks_voronov • Stanfy 0 - STDIN 1

    - STDOUT 2 - STDERR $ cat nofile 2>>err.log

20. IT Saturday • @aleks_voronov • Stanfy 0 - STDIN 1

    - STDOUT 2 - STDERR $ cat nofile 2>&1

21. IT Saturday • @aleks_voronov • Stanfy 0 - STDIN 1

    - STDOUT 2 - STDERR $ cat nofile 2>>err.log 1>>out.log

22. IT Saturday • @aleks_voronov • Stanfy 0 - STDIN 1

    - STDOUT 2 - STDERR $ cat nofile 2>/dev/null

23. IT Saturday • @aleks_voronov • Stanfy 0 - STDIN 1

    - STDOUT 2 - STDERR $ cat nofile 2>&1 | grep kernel

24. IT Saturday • @aleks_voronov • Stanfy UNIX PIPELINES ⛓ $

    ls -l | grep "Mar" | sort

25. IT Saturday • @aleks_voronov • Stanfy UNIX PIPELINES ⛓ $

    ps aux | grep Xcode | awk '{print $2}'

26. IT Saturday • @aleks_voronov • Stanfy UNIX PIPELINES ⛓ $

    git branch | xargs git branch -D

27. IT Saturday • @aleks_voronov • Stanfy CLI WITH SWIFT

28. IT Saturday • @aleks_voronov • Stanfy SWIFT REPL (READ-EVALUATION-PRINT-LOOP) $

    swift

29. IT Saturday • @aleks_voronov • Stanfy IMMEDIATE MODE $ swift

    script.swift

30. IT Saturday • @aleks_voronov • Stanfy SWIFT COMPILE ⚙ $

    swiftc script.swift $ ./script

31. IT Saturday • @aleks_voronov • Stanfy SWIFT COMPILE ⚙ $

    swiftc script.swift -o myscript $ ./myscript

32. IT Saturday • @aleks_voronov • Stanfy EXECUTABLE SCRIPTS

33. IT Saturday • @aleks_voronov • Stanfy EXECUTABLE SCRIPTS #!/USR/BIN/SWIFT HASHBANG

34. IT Saturday • @aleks_voronov • Stanfy EXECUTABLE SCRIPTS CHMOD +X

    SCRIPT.SWIFT

35. IT Saturday • @aleks_voronov • Stanfy SCALING OUR CLI WORKING

    WITH MULTIPLE FILES

36. IT Saturday • @aleks_voronov • Stanfy MAIN.SWIFT

37. IT Saturday • @aleks_voronov • Stanfy EXECUTING MULTIPLE FILES $

    swift main.swift script.swift

38. IT Saturday • @aleks_voronov • Stanfy $ swiftc main.swift script.swift

    -o script EXECUTING MULTIPLE FILES

39. IT Saturday • @aleks_voronov • Stanfy $ swiftc script.swift main.swift

    -o script EXECUTING MULTIPLE FILES

40. IT Saturday • @aleks_voronov • Stanfy $ swiftc *.swift -o

    script EXECUTING MULTIPLE FILES

41. IT Saturday • @aleks_voronov • Stanfy $ find . -iname

    '*.swift' | xargs swiftc -o script EXECUTING MULTIPLE FILES

42. IT Saturday • @aleks_voronov • Stanfy EXTERNAL RESOURCES

43. IT Saturday • @aleks_voronov • Stanfy SYSTEM DEPENDENCIES $ swiftc

    script.swift $ xcrun -sdk macosx swiftc script.swift

44. IT Saturday • @aleks_voronov • Stanfy CUSTOM DEPENDENCIES -F $

    swift -F /Carthage/Build/Mac script.swift

45. IT Saturday • @aleks_voronov • Stanfy CUSTOM DEPENDENCIES #!/USR/BIN/SWIFT -F

    Carthage/Build/Mac HASHBANG

46. IT Saturday • @aleks_voronov • Stanfy COMPILING DEPENDENT SCRIPT

47. IT Saturday • @aleks_voronov • Stanfy $ xcrun \ -sdk

    macosx swiftc \ -F Carthage/Build/Mac script.swift COMPILING DEPENDENT SCRIPT > dyld: Library not loaded: @rpath

48. IT Saturday • @aleks_voronov • Stanfy $ xcrun \ -sdk

    macosx swiftc \ -F Carthage/Build/Mac script.swift \ -Xlinker -rpath \ -Xlinker @executable_path/Carthage/Build/Mac COMPILING DEPENDENT SCRIPT

49. IT Saturday • @aleks_voronov • Stanfy DEPENDENCIES MANAGEMENT

50. IT Saturday • @aleks_voronov • Stanfy COCOAPODS

51. IT Saturday • @aleks_voronov • Stanfy CARTHAGE

52. IT Saturday • @aleks_voronov • Stanfy SPM SWIFT PACKAGE MANAGER

53. IT Saturday • @aleks_voronov • Stanfy PARSING ARGUMENTS

54. IT Saturday • @aleks_voronov • Stanfy PARSING ARGUMENTS $ ./script

    one two three $ ./script one\ two\ three $ ./script "one two three" 3 args 1 arg 1 arg

55. IT Saturday • @aleks_voronov • Stanfy PROCESS ENUM Process.arguments ==

    [ "./script.swift", "one", "two", "three" ]

56. IT Saturday • @aleks_voronov • Stanfy FILESYSTEM

57. IT Saturday • @aleks_voronov • Stanfy FILESYSTEM NSFILEMANAGER NSFILEHANDLER NSTASK

    NSPIPE

58. IT Saturday • @aleks_voronov • Stanfy HANDY LIBRARIES
 COMMANDER OPTIONKIT

    COMMANDANT REACTIVETASKS PRETTYCOLORS

59. IT Saturday • @aleks_voronov • Stanfy REAL WORLD EXAMPLES CARTHAGEKIT


    CARTHAGE CLI

60. IT Saturday • @aleks_voronov • Stanfy THANK YOU!

61. IT Saturday • @aleks_voronov • Stanfy Q/A @ALEKS_VORONOV A-VORONOV