package containers

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IO Utils
1. Input
  1. Output
2. Misc for Generators
  1. File and file names

containers
- CCArray
  - S
  - Sub
- CCBool
- CCError
  - MONAD
  - Traverse
    
    M
- CCFloat
- CCFormat
- CCFun
  - Monad
    
    X
- CCHash
- CCHashtbl
  - COUNTER
  - DEFAULT
  - Make
    
    X
  - MakeCounter
    
    X
  - MakeDefault
    
    X
  - S
- CCHeap
  - Make
    
    E
  - PARTIAL_ORD
  - S
- CCInt
- CCList
  - Assoc
  - Idx
  - MONAD
  - Ref
  - Set
  - Traverse
    
    M
  - Zipper
- CCMap
  - Make
    
    O
  - S
- CCOpt
- CCOrd
- CCPair
- CCPrint
  - MONAD_IO
  - MakeIO
    
    M
- CCRandom
- CCRef
- CCSet
  - Make
    
    O
  - S
- CCString
  - S
  - Split
  - Sub
- CCVector
- Containers
  - Array
  - Format
  - List
  - Random
  - String
containers.bigarray
- CCBigstring
containers.data
- CCBV
- CCCache
- CCDeque
- CCFQueue
- CCFlatHashtbl
  - HASHABLE
  - Make
    
    X
  - S
- CCIntMap
- CCMixmap
  - Make
    
    X
  - ORD
  - S
- CCMixset
- CCMixtbl
- CCMultiMap
  - BIDIR
  - Make
    
    K
    
    V
  - MakeBidir
    
    L
    
    R
  - OrderedType
  - S
- CCMultiSet
  - Make
    
    O
  - S
- CCPersistentArray
- CCPersistentHashtbl
  - HashedType
  - Make
    
    H
  - S
- CCRingBuffer
  - Array
    
    Byte
    
    Make
    
    Elt
    
    S
  - Byte
  - Make
    
    Array
    
    X
  - MakeFromArray
    
    A
  - S
    
    Array
- CCTrie
  - Make
    
    W
  - MakeArray
    
    X
  - MakeList
    
    X
  - ORDERED
  - S
  - String
  - WORD
containers.io
- CCIO
  - File
containers.iter
- CCKList
  - MONAD
  - Traverse
    
    M
- CCKTree
  - Dot
  - pset
containers.misc
- Containers_misc
containers.sexp
- CCSexp
  - Traverse
- CCSexpM
  - MONAD
  - MakeDecode
    
    M
- CCSexpStream
  - L
  - Lexer
  - ParseGen
  - Source
    
    Manual
containers.string
- CCApp_parse
  - Chan
  - INPUT
  - Infix
  - Make
    
    I
  - MakeFromReader
    
    R
  - READER
  - S
  - Str
- CCKMP
  - Make
    
    Str
  - S
  - STRING
- CCLevenshtein
  - Index
  - Make
    
    Index
    
    Str
  - S
    
    Index
  - STRING
- CCParse
  - U
- Containers_string
containers.thread
- CCFuture
  - Infix
  - Timer
- CCLock
containers.unix
- CCUnix
  - Infix

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IO Utils

Simple utilities to deal with basic Input/Output tasks in a resource-safe way. For advanced IO tasks, the user is advised to use something like Lwt or Async, that are far more comprehensive.

NOTE this was formerly a monadic IO module. The old module is now in containers.advanced under the name CCMonadIO.

Examples:

obtain the list of lines of a file:

# let l = CCIO.(with_in "/tmp/some_file" read_lines);;

transfer one file into another:

# CCIO.(
  with_in "/tmp/input"
    (fun ic ->
      let chunks = read_chunks ic in
      with_out ~flags:[Open_creat; Open_wronly] ~mode:0o644 "/tmp/output"
        (fun oc ->
          write_gen oc chunks
        )
    )
) ;;

since 0.6

type 'a gen = unit -> 'a option

See Gen

Input

val with_in : 
  ?mode:int ->
  ?flags:Pervasives.open_flag list ->
  string ->
  (Pervasives.in_channel -> 'a) ->
  'a

Open an input file with the given optional flag list, calls the function on the input channel. When the function raises or returns, the channel is closed.

val read_chunks : ?size:int -> Pervasives.in_channel -> string gen

Read the channel's content into chunks of size size

val read_line : Pervasives.in_channel -> string option

Read a line from the channel. Returns None if the input is terminated. The "\n" is removed from the line.

val read_lines : Pervasives.in_channel -> string gen

Read all lines. The generator should be traversed only once.

val read_lines_l : Pervasives.in_channel -> string list

Read all lines into a list

val read_all : ?size:int -> Pervasives.in_channel -> string

Read the whole channel into a buffer, then converted into a string.

parameter size
the internal buffer size
@since 0.7

Output

val with_out : 
  ?mode:int ->
  ?flags:Pervasives.open_flag list ->
  string ->
  (Pervasives.out_channel -> 'a) ->
  'a

Same as with_in but for an output channel

val with_out_a : 
  ?mode:int ->
  ?flags:Pervasives.open_flag list ->
  string ->
  (Pervasives.out_channel -> 'a) ->
  'a

Similar to with_out but with the Open_append and Open_creat flags activated

val write_line : Pervasives.out_channel -> string -> unit

Write the given string on the channel, followed by "\n"

val write_gen : ?sep:string -> Pervasives.out_channel -> string gen -> unit

Write the given strings on the output. If provided, add sep between every two string (but not at the end)

val write_lines : Pervasives.out_channel -> string gen -> unit

Write every string on the output, followed by "\n".

val write_lines_l : Pervasives.out_channel -> string list -> unit

Misc for Generators

val tee : ('a -> unit) list -> 'a gen -> 'a gen

tee funs gen behaves like gen, but each element is given to every function f in funs at the time the element is produced.

File and file names

How to list recursively files in a directory:

# let files = CCIO.File.read_dir ~recurse:true (CCIO.File.make "/tmp");;
# CCIO.write_lines stdout files;;

See File.walk if you also need to list directories:

# let content = CCIO.File.walk (CCIO.File.make "/tmp");;
# Gen.map CCIO.File.show_walk_item content |> CCIO.write_lines stdout;;

module File : sig ... end