package gapi-ocaml
A simple OCaml client for Google Services
Install
Dune Dependency
Authors
Maintainers
Sources
v0.4.6.tar.gz
sha256=b84b680528a5e050014103a8e7a60a5d43efd5fefc3f838310bd46769775ab48
md5=8ee26acf1f6c6f5e24c7b57fa070a0a2
doc/src/gapi-ocaml.netstring-local/netstring_tstring.ml.html
Source file netstring_tstring.ml
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(* $Id$ *) open Netsys_types type _ tstring_kind = | String_kind : string tstring_kind | Bytes_kind : Bytes.t tstring_kind | Memory_kind : memory tstring_kind type 't tstring_ops = { kind : 't tstring_kind option; length : 't -> int; get : 't -> int -> char; unsafe_get : 't -> int -> char; unsafe_get3 : 't -> int -> int; (* get 3 chars packed into one int *) copy : 't -> 't; string : 't -> string; bytes : 't -> Bytes.t; sub : 't -> int -> int -> 't; substring : 't -> int -> int -> string; subbytes : 't -> int -> int -> Bytes.t; subpoly : 'u . 'u tstring_kind -> 't -> int -> int -> 'u; blit_to_bytes : 't -> int -> Bytes.t -> int -> int -> unit; blit_to_memory : 't -> int -> memory -> int -> int -> unit; index_from : 't -> int -> char -> int; index_from3 : 't -> int -> int -> char -> char -> char -> int; rindex_from : 't -> int -> char -> int; rindex_from3 : 't -> int -> int -> char -> char -> char -> int; } type tstring_ops_box = | Tstring_ops_box : 't tstring_kind * 't tstring_ops -> tstring_ops_box type tstring_box = | Tstring_box : 't tstring_kind * 't tstring_ops * 't -> tstring_box type tstring_polybox = | Tstring_polybox : 't tstring_ops * 't -> tstring_polybox (* Warning: you cannot match on the type 't here *) let str_subpoly : type u . u tstring_kind -> string -> int -> int -> u = function | String_kind -> String.sub | Bytes_kind -> (fun s pos len -> let b = Bytes.create len in Bytes.blit_string s pos b 0 len; b ) | Memory_kind -> (fun s pos len -> let m = Bigarray.Array1.create Bigarray.char Bigarray.c_layout len in Netsys_mem.blit_string_to_memory s pos m 0 len; m ) let str_index_from3 s p n c1 c2 c3 = (* FIXME: implement in C *) let sn = String.length s in if n < 0 || p < 0 || p > sn-n then invalid_arg "index_from3"; let lim = p+n in let p = ref p in while !p < lim && (let c = String.unsafe_get s !p in c <> c1 && c <> c2 && c <> c3) do incr p done; if !p >= lim then raise Not_found; !p let str_rindex_from3 s p n c1 c2 c3 = (* FIXME: implement in C *) let sn = String.length s in if n < 0 || p < -1 || p >= sn || n-1 > p then invalid_arg "rindex_from"; let lim = p-n+1 in let p = ref p in while !p >= lim && (let c = String.unsafe_get s !p in c <> c1 && c <> c2 && c <> c3) do decr p done; if !p < lim then raise Not_found; !p let string_ops = { kind = Some String_kind; length = String.length; get = String.get; unsafe_get = String.unsafe_get; unsafe_get3 = (fun s k -> let c0 = Char.code (String.unsafe_get s k) in let c1 = Char.code (String.unsafe_get s (k+1)) in let c2 = Char.code (String.unsafe_get s (k+2)) in (c0 lsl 16) lor (c1 lsl 8) lor c2 ); copy = STRING_COPY; (* ... for the time being ... *) string = (fun s -> s); bytes = Bytes.of_string; sub = String.sub; substring = String.sub; subbytes = (fun s p l -> let b = Bytes.create l in Bytes.blit_string s p b 0 l; b ); subpoly = str_subpoly; blit_to_bytes = Bytes.blit_string; blit_to_memory = Netsys_mem.blit_string_to_memory; index_from = String.index_from; index_from3 = str_index_from3; rindex_from = String.rindex_from; rindex_from3 = str_rindex_from3; } let bytes_index_from3 s p n c1 c2 c3 = str_index_from3 (Bytes.unsafe_to_string s) p n c1 c2 c3 let bytes_rindex_from3 s p n c1 c2 c3 = str_rindex_from3 (Bytes.unsafe_to_string s) p n c1 c2 c3 let bytes_subpoly : type u . u tstring_kind -> Bytes.t -> int -> int -> u = function | String_kind -> Bytes.sub_string | Bytes_kind -> Bytes.sub | Memory_kind -> (fun s pos len -> let m = Bigarray.Array1.create Bigarray.char Bigarray.c_layout len in Netsys_mem.blit_bytes_to_memory s pos m 0 len; m ) let bytes_ops = { kind = Some Bytes_kind; length = Bytes.length; get = Bytes.get; unsafe_get = Bytes.unsafe_get; unsafe_get3 = (fun s k -> let c0 = Char.code (Bytes.unsafe_get s k) in let c1 = Char.code (Bytes.unsafe_get s (k+1)) in let c2 = Char.code (Bytes.unsafe_get s (k+2)) in (c0 lsl 16) lor (c1 lsl 8) lor c2 ); copy = Bytes.copy; string = Bytes.to_string; bytes = (fun s -> s); sub = Bytes.sub; substring = Bytes.sub_string; subbytes = Bytes.sub; subpoly = bytes_subpoly; blit_to_bytes = Bytes.blit; blit_to_memory = Netsys_mem.blit_bytes_to_memory; index_from = Bytes.index_from; index_from3 = bytes_index_from3; rindex_from = Bytes.rindex_from; rindex_from3 = bytes_rindex_from3; } let mem_index_from3 m p n c1 c2 c3 = (* FIXME: implement in C *) let sn = Bigarray.Array1.dim m in if n < 0 || p < 0 || p > sn-n then invalid_arg "index_from"; let lim = p+n in let p = ref p in while !p < lim && (let c = Bigarray.Array1.unsafe_get m !p in c <> c1 && c <> c2 && c <> c3) do incr p done; if !p >= lim then raise Not_found; !p let mem_index_from m p c = let sn = Bigarray.Array1.dim m in mem_index_from3 m p (sn-p) c c c let mem_rindex_from3 m p n c1 c2 c3 = (* FIXME: implement in C *) let sn = Bigarray.Array1.dim m in if n < 0 || p < -1 || p >= sn || n-1 > p then invalid_arg "rindex_from"; let lim = p-n+1 in let p = ref p in while !p >= lim && (let c = Bigarray.Array1.unsafe_get m !p in c <> c1 && c <> c2 && c <> c3) do decr p done; if !p < lim then raise Not_found; !p let mem_rindex_from m p c = mem_rindex_from3 m p (p+1) c c c let mem_sub m1 p len = let m2 = Bigarray.Array1.create Bigarray.char Bigarray.c_layout len in Bigarray.Array1.blit (Bigarray.Array1.sub m1 p len) m2; m2 let mem_subpoly : type u . u tstring_kind -> memory -> int -> int -> u = function | String_kind -> (fun m pos len -> Netsys_mem.string_of_memory (Bigarray.Array1.sub m pos len) ) | Bytes_kind -> (fun m pos len -> Netsys_mem.bytes_of_memory (Bigarray.Array1.sub m pos len) ) | Memory_kind -> mem_sub let memory_ops = { kind = Some Memory_kind; length = (Bigarray.Array1.dim : memory -> int); get = Bigarray.Array1.get; unsafe_get = Bigarray.Array1.unsafe_get; unsafe_get3 = (fun s k -> let c0 = Char.code (Bigarray.Array1.unsafe_get s k) in let c1 = Char.code (Bigarray.Array1.unsafe_get s (k+1)) in let c2 = Char.code (Bigarray.Array1.unsafe_get s (k+2)) in (c0 lsl 16) lor (c1 lsl 8) lor c2 ); copy = (fun m1 -> let n = Bigarray.Array1.dim m1 in mem_sub m1 0 n ); string = Netsys_mem.string_of_memory; bytes = Netsys_mem.bytes_of_memory; sub = mem_sub; substring = (fun m p l -> let m1 = Bigarray.Array1.sub m p l in Netsys_mem.string_of_memory m1 ); subbytes = (fun m p l -> let m1 = Bigarray.Array1.sub m p l in Netsys_mem.bytes_of_memory m1 ); subpoly = mem_subpoly; blit_to_bytes = Netsys_mem.blit_memory_to_bytes; blit_to_memory = (fun m1 p1 m2 p2 l -> let sub1 = Bigarray.Array1.sub m1 p1 l in let sub2 = Bigarray.Array1.sub m2 p2 l in Bigarray.Array1.blit sub1 sub2 ); index_from = mem_index_from; index_from3 = mem_index_from3; rindex_from = mem_rindex_from; rindex_from3 = mem_rindex_from3; } let ops_of_tstring = function | `String _ -> Tstring_ops_box(String_kind, string_ops) | `Bytes _ -> Tstring_ops_box(Bytes_kind, bytes_ops) | `Memory _ -> Tstring_ops_box(Memory_kind, memory_ops) type 'a with_fun = { with_fun : 's . 's tstring_ops -> 's -> 'a } let with_tstring : 'a with_fun -> tstring -> 'a = fun f -> function | `String s -> f.with_fun string_ops s | `Bytes s -> f.with_fun bytes_ops s | `Memory s -> f.with_fun memory_ops s let length_tstring ts = with_tstring { with_fun = (fun ops s -> ops.length s) } ts let polymorph_string_transformation : type s t . (string->string) -> s tstring_ops -> t tstring_kind -> s -> t = (fun f ops out_kind s -> let s' = f (ops.string s) in match out_kind with | String_kind -> s' | Bytes_kind -> Bytes.of_string s' | Memory_kind -> Netsys_mem.memory_of_string s' ) let tstring_of_tbuffer = function | `Bytes s -> `Bytes s | `String s -> `Bytes s | `Memory m -> `Memory m
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