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evaluate.ml
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evaluate.ml
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(*
any-dl:
-------
Generic Media-Downloader for any kind of Online-Mediathek.
Attempts to be the general tool, doing things like
youtube-dl, zdf-dl, arte-dl and so on.
Author / copyright: Oliver Bandel
Copyleft: GNU GENERAL PUBLIC LICENSE v3 (or higher)
*)
include Parsetreetypes
open Tools
exception NOT_IMPLEMENTED_SO_FAR (* for planned, but not already implemented functionality *)
exception Value_conversion_unknown (* type conversion, that can't handle this special item (similar to "Wrong_tmpvar_type") *)
exception No_document_found (* a dcoument could not be retrieved *)
exception Tagselect_empty_list (* tagselect gives back an empty list *)
exception No_Match (* if a match was tried, but no match could be found *)
exception No_Matchresult_available (* if Select is used, but there is no match-result available as tmpvar *)
exception No_Matchable_value_available (* if Match is used, but there is no matchable tmpvar *)
exception Html_decode_error (* A problem occured while trying to use html-decode *)
exception Wrong_tmpvar_type (* if tmpvar has just the wrong type... without more detailed info *)
exception Wrong_argument_type (* e.g. Show_match on non-match *)
exception Conversion_error (* for example: string (correct type) for json_prettify is not a json-string (wrong content) *)
exception Invalid_Row_Index (* indexing a row that does not exist *)
exception Invalid_Col_Index (* indexing a col that does not exist *)
exception Extractor_list_failure
exception Variable_not_found of string (* a variable-name lookup in the Varname-map failed *)
exception Parse_exit (* user exit of a parse *)
exception Csv_read_error of string (* csv_read-command: error *)
(* Module for Variables *)
(* -------------------- *)
module Varmap =
struct
module type Variablemap_slim =
sig
type key = String.t
type 'a t = 'a Map.Make(String).t
val empty : 'a t
val mem : key -> 'a t -> bool
val add : key -> 'a -> 'a t -> 'a t
val remove : key -> 'a t -> 'a t
val iter : (key -> 'a -> unit) -> 'a t -> unit
val find : key -> 'a t -> 'a
end
module Variablemap = ( Map.Make( String ) : Variablemap_slim )
include Variablemap
(* these must be included in output signature
let empty = Varmap.empty
let add = Varmap.add
let remove = Varmap.remove
let iter = Varmap.iter
*)
let exists key map =
match key with
| "NOW" -> true
| _ -> Variablemap.mem key map
let find varname varmap =
match varname with
| "NOW" -> let open Unix in String( time () |> int_of_float |> string_of_int )
| _ -> try Variablemap.find varname varmap with Not_found -> raise (Variable_not_found varname)
(* find with an exception-default value *)
(* This function allows to set a default value in case the lookup yields in Not_found *)
(* ---------------------------------------------------------------------------------- *)
let find_excdef varname varmap default =
match varname with
| "NOW" -> let open Unix in String( string_of_float ( time() ) )
| _ -> try Variablemap.find varname varmap with Not_found -> default
end
type varmap_t = results_t Varmap.Variablemap.t
type command_fun_res_t = results_t * varmap_t
(* ================================================================ *)
(* this function "boils down" a aggregation-tmpvar to simpler types *)
(* For example: A Url_list of length 1 is transfomed to url *)
(* For example: A String_list of length 1 is transfomed to String *)
(* and so forth. *)
(* ---------------------------------------------------------------- *)
(* boil_down is an un-aggregate *)
(* ================================================================ *)
let boil_down value =
match value with
| Document_array arr -> if Array.length arr = 1 then ( Document ((fst arr.(0)), (snd arr.(0))) ) else value
| String_array str_arr -> if Array.length str_arr = 1 then ( String str_arr.(0) ) else value
| Url_list url_list -> if List.length url_list = 1 then ( let (u,r) = List.hd url_list in Url (u,r) ) else value
| Url_array url_arr -> if Array.length url_arr = 1 then ( let (u,r) = url_arr.(0) in Url (u,r) ) else value
| _ -> value (* value of all other types will not be changed *)
(* ---------------------------------------------- *)
(* functional, not thorough nifty-details printer *)
(* intended to make basic functionality working *)
(* more fancy converters for other purposes might *)
(* elsewehere be defined *)
(* ---------------------------------------------- *)
let rec to_string result_value (varmap : varmap_t) =
let array_string_append ?(sep="") str_arr = Array.fold_left ( fun left right -> left ^ sep ^ right ) "" str_arr |> String.trim in
let list_string_append str_lst = List.fold_left ( ^ ) "" str_lst in
let str =
match result_value with
| Varname varname -> let res = (Varmap.find varname varmap) in
begin
match res with
| String str -> str
| _ as again -> to_string again varmap
end
| String str -> str
| Document (doc, url) -> url ^ ":" ^ doc
| Document_array arr -> let strarr = Array.map ( fun (d,u) -> to_string (Document (d,u)) varmap ) arr in to_string (String_array strarr) varmap
| String_array str_arr -> array_string_append str_arr
| Match_result mres -> let rows = Array.map ( fun columns -> array_string_append ~sep:" " columns ) mres in array_string_append ~sep:"\n" rows
| Url (href, ref) -> href
| Url_list url_list -> List.fold_right ( fun a sofar -> "\"" ^ (fst a) ^ "\" " ^ sofar ) url_list ""
| Url_array url_arr -> to_string (Url_list ( Array.to_list url_arr)) varmap
| Empty -> ""
(*
| Doclist dl -> Parsers.convert_doclist_to_htmlstring dl
*)
| Cookies clist -> list_string_append ( List.map Tools.cookie_to_string clist )
| Dummy_result -> ""
(*
*)
| _ -> print_warning "to_string-function found non-convertable type"; raise Wrong_argument_type (* just in case more cases will be added *)
in
str
(* ---------------------------------------------- *)
(* Convert to Urls/Url-arrays and so on. *)
(* Should replace "to_string", if Url is wanted. *)
(* ---------------------------------------------- *)
let rec urlify result_value (varmap : varmap_t) =
let make_referrer () = to_string ( Varmap.find_excdef "REFERRER" varmap (String "") ) varmap in
let converted =
match result_value with
| Varname varname -> let res = (Varmap.find varname varmap) in
urlify res varmap
| String str -> Url(str, make_referrer() )
| Document (doc, url) -> Url ( url, "-" )
| Document_array arr -> raise Value_conversion_unknown
(*
let strarr = Array.map ( fun (d,u) -> to_string (Document (d,u)) varmap ) arr in to_string (String_array strarr) varmap
*)
| String_array str_arr -> Url_array( Array.map (fun str -> (str, make_referrer()) ) str_arr )
| Match_result mres -> let liste = ref [] in
let referrer = make_referrer() in
Array.iter( fun x -> Array.iter ( fun elem -> liste := (elem, referrer) :: !liste ) x ) mres; (* extract elements to liste *)
Url_list !liste
| Url (href, ref) -> Url (href, ref)
| Url_list url_list -> Url_list url_list
| Url_array url_arr -> Url_array url_arr
| Empty -> raise Wrong_argument_type
| Dummy_result -> raise Wrong_argument_type
(*
*)
| _ -> print_warning "urlify-function found non-convertable type"; raise Wrong_argument_type (* just in case more cases will be added *)
in
boil_down converted
(* Menue to select an item from a string-list; accepts only valid inputs *)
(* The return value is the selected value itself (not an index) *)
(* --------------------------------------------------------------------- *)
(* If selected option can't be converted to int, the default pattern is *)
(* selected as answer. *)
(* --------------------------------------------------------------------- *)
let interactive_string_select str_arr default_pattern =
let rec loop str_arr =
print_string "\n";
print_string "Please chose one option:\n\n";
Array.iteri ( fun idx str -> Printf.printf " %2d.: %s\n" idx str ) str_arr;
print_string "\n ===> ? ";
try
let value = int_of_string( read_line() ) in
if value >= 0 && value < Array.length str_arr
then str_arr.(value)
else loop str_arr
with _ -> default_pattern
in
loop str_arr
(* Pasting an Argument-list, converting to native string *)
(* ===================================================== *)
(* Used by the paste-command, as well as others. *)
(* ----------------------------------------------------- *)
let paste_arglist_to_string argument_list (varmap : varmap_t) =
let str_lst = List.map (fun item -> to_string item varmap) argument_list in (* convert to string *)
let pasted = List.fold_left ( ^ ) "" str_lst in (* append all strings *)
pasted
(* =================================================================== *)
(* apply a function to the value, giving back a value of the same type *)
(* =================================================================== *)
let default_application variable basefunc (varmap : varmap_t) =
match variable with
(*
| Varname vn -> to_string (Varmap.find vn varmap) varmap
*)
| String str -> String ( basefunc str )
| String_array strarr -> String_array ( Array.map basefunc strarr )
| Document (doc,url) -> Document ( basefunc doc, basefunc url )
| Document_array docarr -> Document_array ( Array.map ( fun (doc,url) -> basefunc doc, basefunc url ) docarr )
| Url (url, ref) -> Url ( basefunc url, basefunc ref )
| Url_list urllist -> Url_list ( List.map ( fun (u,r) -> basefunc u, basefunc r ) urllist )
| Url_array urlarray -> Url_array ( Array.map ( fun (u,r) -> basefunc u, basefunc r ) urlarray )
| Dummy_result -> Empty
| Match_result arrarr -> let res = Array.map (fun arr -> let a = Array.copy arr in Array.map basefunc a ) arrarr in
(Match_result res)
(*
| Match_result -> Empty
| Cookies -> Empty
*)
| Empty -> Empty
| _ -> raise Wrong_argument_type
(* ========================================================================================== *)
(* evaluates to true, if the value is interpreted as being empty, or false, if it's not empty *)
(* ========================================================================================== *)
let rec var_is_empty value (varmap : varmap_t) =
match value with
| Varname vn -> var_is_empty (Varmap.find vn varmap) varmap
| String str -> if str = "" then true else false
| String_array strarr -> if Array.length strarr = 0 then true else false
| Document (doc,url) -> if doc = "" then true else false
| Document_array docarr -> if Array.length docarr = 0 then true else false (* also if all Docs are empty ? *)
| Url (url, ref) -> if url = "" then true else false
| Url_list urllist -> if List.length urllist = 0 then true else false
| Url_array urlarray -> if Array.length urlarray = 0 then true else false
| Dummy_result -> false (* Dummy_result is to have a (dummy) result; so it is seen as non-empty. Empty is the opposite *)
| Match_result arrarr -> if Array.length arrarr = 0 then true else false
| Cookies cl -> if List.length cl = 0 then true else false
| Empty -> true
| Unit _ -> true
(* "post_document"-function, is used by Post-command *)
(* ================================================= *)
let post_document url referrer post_params (varmap : varmap_t) =
(* if a cookie already has been received/stored *)
(* pick it from the variable-map for sending it back to server *)
(* ----------------------------------------------------------- *)
let send_cookie = if Varmap.exists "COOKIES.SEND" varmap
then
begin match Varmap.find "COOKIES.SEND" varmap with Cookies cook -> Some cook | _ -> None end
else
None
in
(* retrvieve the document *)
(* ---------------------- *)
let document_and_cookies = Network.Pipelined.post url (Some referrer) post_params send_cookie in
begin
match document_and_cookies with
| None -> None
| Some (doc, cookies) ->
let new_varmap = (Varmap.add "COOKIES.RECEIVED" (Cookies cookies) varmap) in
Some (doc, url, new_varmap)
end
let rec get_document url referrer (varmap : varmap_t) =
(* if a cookie already has been received/stored *)
(* pick it from the variable-map for sending it back to server *)
(* ----------------------------------------------------------- *)
let send_cookie = if Varmap.exists "COOKIES.SEND" varmap
then
begin match Varmap.find "COOKIES.SEND" varmap with Cookies cook -> Some cook | _ -> None end
else
None
in
(* retrvieve the document *)
(* ---------------------- *)
let document_and_cookies = Network.Pipelined.get url (Some referrer) send_cookie in
begin
match document_and_cookies with
| None -> None
| Some (doc, cookies) ->
let new_varmap = (Varmap.add "COOKIES.RECEIVED" (Cookies cookies) varmap) in
Some (doc, url, new_varmap)
end
(* "download"-function, is for downloading big files firectly into a destination-file *)
(* ================================================================================== *)
and download url referrer dst_file (varmap : varmap_t) =
(* if a cookie already has been received/stored *)
(* pick it from the variable-map for sending it back to server *)
(* ----------------------------------------------------------- *)
let send_cookie = if Varmap.exists "COOKIES.SEND" varmap
then
begin match Varmap.find "COOKIES.SEND" varmap with Cookies cook -> Some cook | _ -> None end
else
None
in
(* retrvieve the document *)
(* ---------------------- *)
let response_cookies = Network.Pipelined.get_download url (Some referrer) send_cookie dst_file in
begin
match response_cookies with
| None -> None
| Some cookies ->
let new_varmap = (Varmap.add "COOKIES.RECEIVED" (Cookies cookies) varmap) in
Some new_varmap
end
(* ====================================================================================== *)
(* get_document_list: gets a list of documents (bulk-get) *)
(* if the sleep-time is set o values > 0, then each get waits this amoubt of milliseconds *)
(* before the get is executed. *)
(* ====================================================================================== *)
(* at the moment, varmap is not returned updated *)
(* ---------------------------------------------- *)
and get_document_list urls_refs (varmap : varmap_t) =
let rec aux urllist (result, vmap) =
if Cli.opt.Cli.ms_sleep > 0 then Sleep.sleep_ms Cli.opt.Cli.ms_sleep; (* call sleep-function if > 0 ms to wait *)
match urllist with
| [] -> result, vmap
| (u,r)::tl -> begin
match get_document u r vmap with
| None -> Printf.eprintf "no document found for %s\n" u;
aux tl (result, vmap)
| Some (doc, ref, new_varmap) -> aux tl ( (doc,ref)::result, new_varmap )
end
in
aux urls_refs ([], varmap)
(* ======================================================== *)
and evaluate_statement (statement_list : statements_t list) (macrodefs_lst : macrodef_t list) tmpvar (varmap : varmap_t) : results_t * varmap_t =
(* For -vv print command name to stdout *)
(* ==================================== *)
if Cli.opt.Cli.very_verbose then Printf.printf "Length of statement_list: %d\n" (List.length statement_list);
if Cli.opt.Cli.very_verbose
then
begin
try
let str = Parsetreetypes.statement_type_to_string (List.hd statement_list) in
Printf.printf "evaluate_statement: *** %s ***\n" str;
with Failure _ -> () (* catches List.hd [] *)
end;
match statement_list with
| [] -> tmpvar, varmap
| statement::tl ->
let res, newvarmap =
begin
match statement with
| Command cmd -> command [ cmd ] macrodefs_lst tmpvar varmap
| Assignment (varname, cmd) -> command ( cmd :: [ (Store varname) ] ) macrodefs_lst tmpvar varmap
| Conditional (if_stmtlist, then_stmtlist, else_stmtlist_opt) -> let testresult = fst ( evaluate_statement if_stmtlist macrodefs_lst tmpvar varmap ) in
(* if the variable has Unit-type, then it is always true-empty *)
if not ( var_is_empty testresult varmap )
then evaluate_statement then_stmtlist macrodefs_lst tmpvar varmap
else
begin
match else_stmtlist_opt with
| None -> evaluate_statement [] macrodefs_lst tmpvar varmap
| Some else_commands -> evaluate_statement else_commands macrodefs_lst tmpvar varmap
end
| Loop (test_cmdlst, todo_cmdslst) -> while ( not ( var_is_empty (fst ( evaluate_statement test_cmdlst macrodefs_lst tmpvar varmap )) varmap ) )
do
Unit ( ignore ( evaluate_statement todo_cmdslst macrodefs_lst tmpvar varmap ) ), varmap
done; Unit (), varmap
(* if the variable has Unit-type, then it is always true-empty => possibly endless loop! *) (* TODO ! *)
end
in
evaluate_statement tl macrodefs_lst res newvarmap (* result of the command-calls is new tmpvar *)
(* ======================================================== *)
and command commandlist macrodefs_lst tmpvar varmap : results_t * varmap_t =
flush_all();
(* For -vv print command name to stdout *)
(* ==================================== *)
if Cli.opt.Cli.very_verbose
then
begin
try
let str = Parsetreetypes.command_to_string (List.hd commandlist) in
print_endline ("_Command_ " ^ str)
with Failure _ -> () (* catches List.hd [] *)
end;
match commandlist with
| [] -> tmpvar, varmap (* Printf.printf "<========================== BACK. Leave evaluate_statement_list() now!\n"*)
| cmd::tl -> begin
match cmd with
| Post fname_arglist -> cmd_post commandlist macrodefs_lst tmpvar varmap cmd tl fname_arglist
| Download fname_arglist_opt -> cmd_download commandlist macrodefs_lst tmpvar varmap cmd tl fname_arglist_opt
| Get_url (url, referrer) -> cmd_get_url commandlist macrodefs_lst tmpvar varmap cmd tl (url, referrer)
| Get -> cmd_get commandlist macrodefs_lst tmpvar varmap cmd tl
| Get_urls -> cmd_get_urls commandlist macrodefs_lst tmpvar varmap cmd tl
(* creates url and puts it into tmpvar *)
| Make_url_tmpvar -> command tl macrodefs_lst (urlify tmpvar varmap) varmap
(*
let (url, referrer) = (to_string tmpvar varmap, "-") in
command tl macrodefs_lst (Url( url, referrer)) varmap
urlify tmpvar varmap
*)
| Make_url (u,r) -> let (url, referrer) = (to_string u varmap, to_string r varmap) in
command tl macrodefs_lst (Url( url, referrer)) varmap
| Match pattern -> cmd_match commandlist macrodefs_lst tmpvar varmap cmd tl pattern
| Grep pattern_arglist -> cmd_grep commandlist macrodefs_lst tmpvar varmap cmd tl pattern_arglist
| Grep_v pattern_arglist -> cmd_grep_v commandlist macrodefs_lst tmpvar varmap cmd tl pattern_arglist (* grep -v *)
| Select index -> cmd_select commandlist macrodefs_lst tmpvar varmap cmd tl index
| MSelect index_list -> cmd_mselect commandlist macrodefs_lst tmpvar varmap cmd tl index_list
| ColSelect col_index -> cmd_colselect commandlist macrodefs_lst tmpvar varmap cmd tl col_index
| RowSelect index -> cmd_rowselect commandlist macrodefs_lst tmpvar varmap cmd tl index
| DropCol col_index -> cmd_dropcol commandlist macrodefs_lst tmpvar varmap cmd tl col_index
| DropRow index -> cmd_droprow commandlist macrodefs_lst tmpvar varmap cmd tl index
| Select_match ( col_idx, matchpat) -> cmd_select_match commandlist macrodefs_lst tmpvar varmap cmd tl ( col_idx, matchpat)
(*
- iselectmatch with 3 parameters would be good:
* selection-source
* selection-match-string
* default-selection
*)
| I_Select_match ( col_idx, matchpat, default_pattern )
-> cmd_i_select_match commandlist macrodefs_lst tmpvar varmap cmd tl ( col_idx, matchpat, default_pattern )
| To_matchres -> cmd_to_matchres commandlist macrodefs_lst tmpvar varmap cmd tl
| Table_to_matchres -> cmd_table_to_matchres commandlist macrodefs_lst tmpvar varmap cmd tl
| Append_to varname -> cmd_append_to commandlist macrodefs_lst tmpvar varmap cmd tl varname
| Transpose -> cmd_transpose commandlist macrodefs_lst tmpvar varmap cmd tl
| Link_extract -> cmd_link_extract commandlist macrodefs_lst tmpvar varmap cmd tl
| Link_extract_xml -> cmd_link_extract_xml commandlist macrodefs_lst tmpvar varmap cmd tl
| Rebase -> cmd_rebase commandlist macrodefs_lst tmpvar varmap cmd tl
| Title_extract -> cmd_title_extract commandlist macrodefs_lst tmpvar varmap cmd tl
| Tag_select (selector, extractor ) -> cmd_tag_select commandlist macrodefs_lst tmpvar varmap cmd tl (selector, extractor )
| Paste paste_list -> let res = paste_arglist_to_string paste_list varmap in
command tl macrodefs_lst (String res) varmap
| Print_args prt_args ->
ignore ( command [ Paste( prt_args ); Print ] macrodefs_lst Empty varmap ); (* use the Paste-command and the print-command *)
command tl macrodefs_lst tmpvar varmap (* just next command without changed tmpvar *)
| Print -> cmd_print commandlist macrodefs_lst tmpvar varmap cmd tl
| Show_match -> cmd_show_match commandlist macrodefs_lst tmpvar varmap cmd tl
| Print_string str -> print_string str; command tl macrodefs_lst tmpvar varmap
| CSV_save_as argument_list -> cmd_csv_save_as commandlist macrodefs_lst tmpvar varmap cmd tl argument_list
| CSV_save -> cmd_csv_save commandlist macrodefs_lst tmpvar varmap cmd tl
| CSV_read filename_arglist -> cmd_csv_read commandlist macrodefs_lst tmpvar varmap cmd tl filename_arglist
| Save_as argument_list -> cmd_save_as commandlist macrodefs_lst tmpvar varmap cmd tl argument_list
| Save -> cmd_save commandlist macrodefs_lst tmpvar varmap cmd tl
| Setvar var -> command tl macrodefs_lst var varmap (* sets the argument of setvar as new tmpvar *)
| Store varname -> verbose_printf "Store tmpvar in varname \"%s\"\n" varname;
command tl macrodefs_lst tmpvar (Varmap.add varname tmpvar varmap) (* stores tmpvar as named variable *)
| Recall varname -> verbose_printf "Recall variable: \"%s\"\n" varname;
let varcontents = Varmap.find varname varmap in
command tl macrodefs_lst varcontents varmap
| Delete varname -> verbose_printf "Delete variable \"%s\"\n" varname;
command tl macrodefs_lst tmpvar (Varmap.remove varname varmap) (* removes variable varname *)
| Storematch varname -> cmd_storematch commandlist macrodefs_lst tmpvar varmap cmd tl varname
| Sort -> cmd_sort commandlist macrodefs_lst tmpvar varmap cmd tl
| Uniq -> cmd_uniq commandlist macrodefs_lst tmpvar varmap cmd tl
| Show_variables -> cmd_show_variables commandlist macrodefs_lst tmpvar varmap cmd tl
| List_variables -> cmd_list_variables commandlist macrodefs_lst tmpvar varmap cmd tl
| Show_type -> cmd_show_type commandlist macrodefs_lst tmpvar varmap cmd tl
| Basename -> cmd_basename commandlist macrodefs_lst tmpvar varmap cmd tl
| Subst (from_re, to_str) -> cmd_subst commandlist macrodefs_lst tmpvar varmap cmd tl (from_re, to_str)
| Quote -> cmd_quote commandlist macrodefs_lst tmpvar varmap cmd tl
| To_string -> command tl macrodefs_lst (String (to_string tmpvar varmap)) varmap
| Dump -> cmd_dump commandlist macrodefs_lst tmpvar varmap cmd tl
| Show_tags -> cmd_show_tags commandlist macrodefs_lst tmpvar varmap cmd tl
| Show_tags_fullpath -> cmd_show_tags_fullpath commandlist macrodefs_lst tmpvar varmap cmd tl
| Dump_data -> cmd_dump_data commandlist macrodefs_lst tmpvar varmap cmd tl
| System -> cmd_system commandlist macrodefs_lst tmpvar varmap cmd tl
| Exit_parse -> flush stdout; raise Parse_exit
| Html_decode -> cmd_html_decode commandlist macrodefs_lst tmpvar varmap cmd tl
| Url_decode -> let newvar = default_application tmpvar Netencoding.Url.decode varmap in command tl macrodefs_lst newvar varmap
| Readline arg_opt -> cmd_readline commandlist macrodefs_lst tmpvar varmap cmd tl arg_opt
| Sleep_ms milliseconds -> Sleep.sleep_ms milliseconds; command tl macrodefs_lst tmpvar varmap
| Json_prettify -> cmd_json_prettify commandlist macrodefs_lst tmpvar varmap cmd tl
| Call_macro macro_name -> cmd_call_macro commandlist macrodefs_lst tmpvar varmap cmd tl macro_name
| Dummy -> command tl macrodefs_lst tmpvar varmap (* does nothing; just a Dummy (NOP) *)
| Empty_dummy -> command tl macrodefs_lst Empty varmap (* gives back Empty as result/tmpvar *)
end
(* COMMANDS-functions are followinf below *)
(*
macrodefs_lst wird in command benutzt. => Parameterübergabe?
*)
(* "command"-function is the main commands-parser/evaluator *)
(* ======================================================== *)
and cmd_post commandlist macrodefs_lst tmpvar varmap cmd tl fname_arglist : results_t * varmap_t =
let create_keyval_pair key = (key, to_string (Varmap.find key varmap) varmap ) in
let create_post_argumentlist varnamelist = List.map create_keyval_pair varnamelist in
let post_arglist = create_post_argumentlist (List.map (fun x -> to_string x varmap) fname_arglist) in (* the argument-list for POST-call *)
begin
match tmpvar with
| Url (url,referrer) ->
begin
match post_document url referrer post_arglist varmap with
| Some ( doc, url, new_varmap ) -> command tl macrodefs_lst (Document (doc, url)) new_varmap (* $URL *)
| None -> raise No_document_found
end
| _ -> raise Wrong_tmpvar_type
end
and cmd_download commandlist macrodefs_lst tmpvar varmap cmd tl fname_arglist_opt : results_t * varmap_t =
(* Maybe use let open Cli in here *)
begin
match tmpvar with
| Url (u,r) -> let filename =
match fname_arglist_opt with
| None -> Parsers.url_to_filename u (* auto-filename, from URL *)
| Some arg_list -> paste_arglist_to_string arg_list varmap (* filename given as argument *)
in
let new_varmap_opt = try download u r filename varmap
with Network.Pipelined.Get_error status -> Printf.eprintf "Download failed because of Get_error ( URL: %s )\n" "" ; Some varmap
in
begin
match new_varmap_opt with
| None -> command tl macrodefs_lst tmpvar varmap
| Some newvm -> command tl macrodefs_lst tmpvar newvm
end
| Url_list ul ->
(* Download on Url_list necessarily use auto-filenaming *)
Unit ( List.iter ( fun (url,ref) -> ignore ( command [ Download None ] macrodefs_lst (Url (url, ref)) varmap );
if Cli.opt.Cli.ms_sleep > 0 then Sleep.sleep_ms Cli.opt.Cli.ms_sleep ) ul ) , varmap
| Url_array ua ->
(* Download on Url_array necessarily use auto-filenaming *)
Unit ( Array.iter ( fun (url,ref) -> ignore ( command [ Download None ] macrodefs_lst (Url (url, ref)) varmap );
if Cli.opt.Cli.ms_sleep > 0 then Sleep.sleep_ms Cli.opt.Cli.ms_sleep ) ua ) , varmap
| _ -> raise Wrong_tmpvar_type
end
and cmd_get_url commandlist macrodefs_lst tmpvar varmap cmd tl (url, referrer) : results_t * varmap_t =
if Neturl.extract_url_scheme url = "file"
then (* FILE://... *)
begin
(* extract the filename from the url *)
(* --------------------------------- *)
let url_strlen = String.length url in
let scheme_strlen = String.length "file:///" in
let scheme_short_strlen = String.length "file://" in
let filename = if String.sub url 0 scheme_strlen = "file:///"
then String.sub url scheme_short_strlen (url_strlen - scheme_short_strlen )
else (prerr_endline "Get_url - file-urlscheme problem! "; flush stderr; raise No_document_found) (* other exception better? *)
in
(* read file and go on with Document from file as tmpvar *)
(* ----------------------------------------------------- *)
let contents = Tools.read_file filename in
command tl macrodefs_lst (Document (contents, "-")) varmap
end
else (* HTTP://... *)
begin
match get_document url referrer varmap with
| Some ( doc, url, new_varmap ) -> command tl macrodefs_lst (Document (doc, url)) new_varmap (* $URL *)
| None -> raise No_document_found
end
and cmd_get commandlist macrodefs_lst tmpvar varmap cmd tl : results_t * varmap_t =
(* This is not directly downloading the data; just inserting *)
(* the appropriate downloader-Tokens into the Tokenlist / "AST" *)
(* ------------------------------------------------------------ *)
begin
match tmpvar with
| Url (u,r) -> command (Get_url (u,r) :: tl) macrodefs_lst tmpvar varmap
| Url_list urllist -> if List.length urllist > 1
then command (Get_urls :: tl) macrodefs_lst tmpvar varmap
else
begin
let (u,r) = List.hd urllist in
command (Get_url (u,r) :: tl) macrodefs_lst tmpvar varmap
end
| Url_array urlarray -> if Array.length urlarray > 1
then command (Get_urls :: tl) macrodefs_lst tmpvar varmap
else
begin
let (u,r) = urlarray.(0) in
command (Get_url (u,r) :: tl) macrodefs_lst tmpvar varmap
end
(* MATCHRES ???
*)
| _ -> raise Wrong_tmpvar_type
end
and cmd_get_urls commandlist macrodefs_lst tmpvar varmap cmd tl : results_t * varmap_t =
(*
(* two functions for creating the action-list from the url-list *)
(* ------------------------------------------------------------ *)
let get_save_url (url,ref) = [ Get_url (url, ref); Save; Sleep_ms Cli.opt.Cli.ms_sleep ] in
let create_actionlist url_liste = List.flatten ( List.map get_save_url (List.rev url_liste) ) in
*)
(* Remark: The last Sleep added by this process is not necessary... (one sleep too much) *)
(* ----------------------------------------------------------------------- *)
(* here the download-actions will be done, either directly or via creating *)
(* a tokenlist that will do Get-Sleep-Save action-triplets, and prepends *)
(* these actions before the tail of the former command-list. *)
(* ----------------------------------------------------------------------- *)
begin
match tmpvar with
| Url_list urllist -> prerr_endline "Should now get Documents!";
let docs, vm = get_document_list urllist varmap in
command tl macrodefs_lst (Document_array (Array.of_list docs)) vm
| Url_array urlarray -> prerr_endline "Should now get Documents!";
let docs, vm = get_document_list (Array.to_list urlarray) varmap in
command tl macrodefs_lst (Document_array (Array.of_list docs)) vm
| _ -> raise Wrong_tmpvar_type
end
and cmd_match commandlist macrodefs_lst tmpvar varmap cmd tl pattern : results_t * varmap_t =
verbose_printf "MATCH-PATTERN: \"%s\"\n" pattern; (* devel-debug-info *)
let str =
begin
match tmpvar with
| Document (doc, url) -> doc
| String s -> s
| String_array strarr -> Array.fold_left ( fun collect str -> collect ^ str) "" strarr
| Document_array arr -> Array.fold_left ( fun collect (doc,url) -> collect ^ doc) "" arr
(* match also on other types?? Does matching an URL for example makes sense? *)
| _ -> raise No_Matchable_value_available (* this is a type-error Wrong_tmpvar_type *)
end
in
let match_res = Parsers.if_match_give_group_of_groups str ~regexp_str:pattern (* flags here *) in
let matched =
begin
match match_res with
| None -> raise No_Match
| Some res -> res
end
in
command tl macrodefs_lst (Match_result matched) varmap
and cmd_grep commandlist macrodefs_lst tmpvar varmap cmd tl pattern_arglist : results_t * varmap_t =
let pattern = paste_arglist_to_string pattern_arglist varmap in (* create pattern-string from argument-list *)
(*
if Pcre.pmatch ~pat:".any-dl.rc: No such file or directory" msg
*)
(* for each line of a string apply a grep-on-pattern and return list of matching lines *)
(* ----------------------------------------------------------------------------------- *)
let grep_lines_from_string str = (* partially application to the pattern *)
let lines = Tools.lines_of_string str in
List.filter ( fun line -> test_pattern_match_on_string pattern line ) lines
in
let test_match_on_string = test_pattern_match_on_string pattern in (* partially application to the pattern *)
(* do the grep *)
(* ----------- *)
let grepped =
begin
match tmpvar with
| Document (doc, url) -> let grepped_lines = grep_lines_from_string doc in
String_array (Array.of_list grepped_lines )
| Document_array docarr ->
let res =
Array.fold_left ( fun sofar (d,r) -> Array.append sofar (Array.of_list (grep_lines_from_string d)) ) [||] docarr in
String_array res
| String_array str_arr -> String_array( Array2.filter test_match_on_string str_arr)
| Url_array url_arr -> Url_array (Array2.filter ( fun (url,ref) -> test_match_on_string url ||
test_match_on_string ref ) url_arr )
| Url_list url_arr -> Url_list (List.filter ( fun (url,ref) -> test_match_on_string url ||
test_match_on_string ref ) url_arr )
| Match_result mres -> Match_result ( Array2.filter_row_by_colmatch test_match_on_string mres )
| _ -> prerr_endline "Grep: nothing to match"; raise No_Matchresult_available
end
in
command tl macrodefs_lst grepped varmap
and cmd_grep_v commandlist macrodefs_lst tmpvar varmap cmd tl pattern_arglist : results_t * varmap_t =
let pattern = paste_arglist_to_string pattern_arglist varmap in (* create pattern-string from argument-list *)
let test_match_on_string = test_pattern_match_on_string pattern in (* partially application to the pattern *)
let test_nonmatch_on_string str = not (test_match_on_string str) in (* negation of test_match_on_string *)
(*
if Pcre.pmatch ~pat:".any-dl.rc: No such file or directory" msg
*)
let grepped =
begin
match tmpvar with
| Document (doc, url) -> let lines = Tools.lines_of_string doc in
let selected_lines = ( List.filter test_nonmatch_on_string lines ) in
String_array (Array.of_list selected_lines )
| String_array str_arr -> String_array( Array2.filter test_nonmatch_on_string str_arr)
| Url_array url_arr -> Url_array (Array2.filter ( fun (url,ref) -> test_nonmatch_on_string url &&
test_nonmatch_on_string ref ) url_arr )
| Url_list url_arr -> Url_list (List.filter ( fun (url,ref) -> test_nonmatch_on_string url &&
test_nonmatch_on_string ref ) url_arr )
| Match_result mres -> Match_result ( Array2.filter_row_by_colmatch test_nonmatch_on_string mres )
| _ -> prerr_endline "Grep_v: nothing to match"; raise No_Matchresult_available
end
in
command tl macrodefs_lst grepped varmap
and cmd_select commandlist macrodefs_lst tmpvar varmap cmd tl index : results_t * varmap_t =
let newtmp =
match tmpvar with
| Document (doc, url) -> if index = 1 then Url (url, "-") else String doc
| Document_array docarr -> Document (fst docarr.(index), snd docarr.(index))
| String_array rowitems -> String(rowitems.(index))
| Url_array rowitems -> Url( fst(rowitems.(index)), snd(rowitems.(index)))
| Url_list rowitems -> Url( fst(List.nth rowitems index), snd(List.nth rowitems index))
| _ -> prerr_endline "Select: nothing to match"; raise No_Matchresult_available
in
command tl macrodefs_lst newtmp varmap
and cmd_mselect commandlist macrodefs_lst tmpvar varmap cmd tl index_list : results_t * varmap_t =
let newtmp =
match tmpvar with
| String_array rowitems -> String_array(item_selection rowitems index_list)
| Url_array rowitems -> Url_array(item_selection rowitems index_list)
| _ -> prerr_endline "MSelect: nothing to match"; raise No_Matchresult_available
in
command tl macrodefs_lst newtmp varmap
and cmd_colselect commandlist macrodefs_lst tmpvar varmap cmd tl col_index : results_t * varmap_t =
begin
match tmpvar with
| Match_result mres ->
let outer_maxidx = Array.length mres - 1 in (* outer: row *)
let inner_maxidx = Array.length mres.(0) - 1 in (* inner: col *)
let res = Array.make (Array.length mres) mres.(0).(0) in
begin
if col_index >= 0 && col_index <= inner_maxidx
then
begin
for idx = 0 to outer_maxidx
do
res.(idx) <- mres.(idx).(col_index)
done;
command tl macrodefs_lst (String_array res) varmap
end
else
raise Invalid_Col_Index
end
| _ -> print_warning "ColSelect: wrong type!!!"; raise Wrong_tmpvar_type
end
and cmd_rowselect commandlist macrodefs_lst tmpvar varmap cmd tl index : results_t * varmap_t =
let res = ref Empty in
begin
match tmpvar with
| Match_result mres ->
begin
if index >= 0 && index <= Array.length ( mres ) - 1
then
res := String_array ( mres.(index) )
else
raise Invalid_Row_Index
end
| _ -> print_warning "RowSelect: wrong type!!!"; raise Wrong_tmpvar_type
end;
command tl macrodefs_lst !res varmap
(* Drops a column from a matchres *)
(* ------------------------------ *)
and cmd_dropcol commandlist macrodefs_lst tmpvar varmap cmd tl col_index : results_t * varmap_t =
begin
match tmpvar with
| Match_result mres ->
let dropres = Array.copy mres in
Array.iteri ( fun idx the_row ->
dropres.(idx) <- array_drop the_row col_index (* !!! *)
) mres;
command tl macrodefs_lst (Match_result dropres) varmap
| _ -> raise Wrong_argument_type (* wrong tmpvar type *)
end
(* Drops a row from a matchres *)
(* --------------------------- *)
and cmd_droprow commandlist macrodefs_lst tmpvar varmap cmd tl index : results_t * varmap_t =
let res =
begin
match tmpvar with
| Match_result mres -> Match_result (array_drop mres index)
| _ -> print_warning "DropRow: wrong type!!!"; raise Wrong_tmpvar_type
end
in
command tl macrodefs_lst res varmap
(* select match is a row-select, where the index *)
and cmd_select_match commandlist macrodefs_lst tmpvar varmap cmd tl ( col_idx, matchpat) : results_t * varmap_t =
(* first match wins *)
begin
match tmpvar with
| Match_result mres ->
(*let max_row_idx = Array.length ( mres ) - 1 in*)
(*let max_col_idx = Array.length ( mres.(0) ) - 1 in*)
let rows = Array.to_list mres in
(* here is the selection: via string match of the lookup-pattern *)
let selected = List.filter ( fun item -> test_pattern_match_on_string matchpat item.(col_idx) ) rows in
if List.length selected = 0 then raise No_Match;
verbose_printf "found: %d items \n" (List.length selected);
command tl macrodefs_lst (String_array (List.hd selected)) varmap (* first match wins *)
| _ -> print_warning "RowSelect: wrong type!!!"; raise Wrong_tmpvar_type
end
(*
- iselectmatch with 3 parameters would be good:
* selection-source
* selection-match-string
* default-selection
*)
and cmd_i_select_match commandlist macrodefs_lst tmpvar varmap cmd tl ( col_idx, matchpat, default_pattern ) : results_t * varmap_t =
(* select match is a row-select, where the index *)
(* first match wins *)
begin
match tmpvar with
| Match_result mres ->
let max_row_idx = Array.length ( mres ) - 1 in
let max_col_idx = Array.length ( mres.(0) ) - 1 in
let rows = Array.to_list mres in
(* column selection from the match-result *)
(* -------------------------------------- *)
let col = Array.make (Array.length mres) mres.(0).(0) in
begin
if col_idx >= 0 && col_idx <= max_col_idx
then
begin
for idx = 0 to max_row_idx
do
col.(idx) <- mres.(idx).(col_idx)
done
end
else
raise Invalid_Col_Index
end;
(* select the match-pattern: either interactively, *)
(* or use the default from the parser-definition. *)
(* ----------------------------------------------- *)
let match_pattern =
if
Cli.opt.Cli.interactive = true
then
interactive_string_select col default_pattern
else
default_pattern
in
verbose_printf "selected pattern: \"%s\"\n" match_pattern;
let selected = List.filter ( fun item -> test_pattern_match_on_string match_pattern item.(col_idx) ) rows in
if List.length selected = 0 then raise No_Match;
verbose_printf "found: %d items \n" (List.length selected);
command tl macrodefs_lst (String_array (List.hd selected)) varmap (* first match wins *)
| _ -> print_warning "RowSelect: wrong type!!!"; raise Wrong_tmpvar_type
end
(* ------------------------------------------------------------------------------ *)
(* to matchres does conbverts to a matchres-like result (matrix (array of array)) *)
(* Urls will be converted in a way, that the link and the referrer will pop up as *)
(* seperate coulmns in each rows. With dropcol() they can be kiekced out! *)
(* ------------------------------------------------------------------------------ *)
and cmd_to_matchres commandlist macrodefs_lst tmpvar varmap cmd tl : results_t * varmap_t =
let pair_to_arr pair = [| fst pair; snd pair |] in
let new_var =
begin
match tmpvar with
(*
| Varname vn -> Match_result [| [| vn |] |]
*)
| String s -> Match_result [| [| s |] |]
| String_array str_arr -> Match_result [| str_arr |]
| Document (doc, url) -> Match_result [| [| doc; url |] |]
| Document_array doc_arr -> Match_result (Array.map pair_to_arr doc_arr)
| Url (url, ref) -> Match_result [| [| url; ref |] |]