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xidelbase.pas
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xidelbase.pas
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{
Copyright (C) 2012 - 2019 Benito van der Zander (BeniBela)
www.benibela.de
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
}
unit xidelbase;
{$mode objfpc}{$H+}
{$modeswitch advancedrecords}
{$modeswitch typehelpers}
interface
uses
Classes, {$ifdef win32} windows, {$endif}
extendedhtmlparser, xquery, sysutils, bbutils, simplehtmltreeparser, multipagetemplate,
internetaccess, contnrs, simplexmltreeparserfpdom,
xquery_module_file,
xquery_module_math,
xquery_module_uca_icu,
rcmdline,math
;
var cgimode: boolean = false;
allowInternetAccess: boolean = true;
xqueryDefaultCollation: string = '';
mycmdline: TCommandLineReader;
defaultUserAgent: string = 'Mozilla/5.0 (compatible; Xidel)';
majorVersion: integer = 0;
minorVersion: integer = 9;
buildVersion: integer = 9;
var
onPostParseCmdLine: procedure ();
onPrepareInternet: function (const useragent, proxy: string; onReact: TTransferReactEvent): tinternetaccess;
onRetrieve: function (const method, url, postdata, headers: string): string;
onPreOutput: procedure (extractionKind: TExtractionKind);
procedure perform;
implementation
uses process, strutils, bigdecimalmath, xquery_json, xquery__regex, xquery_utf8, xquery.internals.common, xquery.namespaces, xidelcrt,
xquery__serialization;
//{$R xidelbase.res}
///////////////LCL IMPORT
//uses lazutf8;
{$ifdef windows}
function WinCPToUTF8(const s: string): string; {$ifdef WinCe}inline;{$endif}
// result has codepage CP_ACP
var
UTF16WordCnt: SizeInt;
UTF16Str: UnicodeString;
begin
{$ifdef WinCE}
Result := SysToUtf8(s);
{$else}
Result:=s;(*
if IsASCII(Result) then begin
{$ifdef FPC_HAS_CPSTRING}
// prevent codepage conversion magic
SetCodePage(RawByteString(Result), CP_ACP, False);
{$endif}
exit;
end; *)
UTF16WordCnt:=MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, Pointer(s), length(s), nil, 0);
// this will null-terminate
if UTF16WordCnt>0 then
begin
setlength(UTF16Str, UTF16WordCnt);
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, Pointer(s), length(s), @UTF16Str[1], UTF16WordCnt);
Result:=UTF8Encode(UTF16Str);
{$ifdef FPC_HAS_CPSTRING}
// prevent codepage conversion magic
SetCodePage(system.RawByteString(Result), CP_ACP, False);
{$endif}
end;
{$endif}
end;
function ConsoleToUTF8(const s: string): string;// converts UTF8 string to console encoding (used by Write, WriteLn)
{$ifNdef WinCE}
var
Dst: PChar;
{$endif}
begin
{$ifdef WinCE}
Result := SysToUTF8(s);
{$else}
Dst := AllocMem((Length(s) + 1) * SizeOf(Char));
if OemToChar(PChar(s), Dst) then
Result := StrPas(Dst)
else
Result := s;
FreeMem(Dst);
Result := WinCPToUTF8(Result);
{$endif}
end;
(*
function UTF8ToConsole(const s: string): string;
{$ifNdef WinCE}
var
Dst: PChar;
{$endif}
begin
{$ifdef WinCE}
Result := UTF8ToSys(s);
{$else WinCE}
{$ifndef NO_CP_RTL}
Result := UTF8ToWinCP(s);
{$else NO_CP_RTL}
Result := UTF8ToSys(s); // Kept for compatibility
{$endif NO_CP_RTL}
Dst := AllocMem((Length(Result) + 1) * SizeOf(Char));
if CharToOEM(PChar(Result), Dst) then
Result := StrPas(Dst);
FreeMem(Dst);
{$ifndef NO_CP_RTL}
SetCodePage(RawByteString(Result), CP_OEMCP, False);
{$endif NO_CP_RTL}
{$endif WinCE}
end;*)
{$endif}
function GetEnvironmentVariableUTF8(const EnvVar: string): String;
begin
{$IFDEF FPC_RTL_UNICODE}
Result:=UTF16ToUTF8(SysUtils.GetEnvironmentVariable(UTF8ToUTF16(EnvVar)));
{$ELSE}
// on Windows SysUtils.GetEnvironmentString returns OEM encoded string
// so ConsoleToUTF8 function should be used!
// RTL issue: http://bugs.freepascal.org/view.php?id=15233
Result:={$ifdef windows}ConsoleToUTF8{$endif}(SysUtils.GetEnvironmentVariable({UTF8ToSys}(EnvVar)));
{$ENDIF}
end;
/////////////////////////////////////////////////////
var
internet: TInternetAccess;
type TInputFormat = (ifAuto, ifXML, ifHTML, ifXMLStrict, ifJSON, ifJSONStrict);
var
globalDefaultInputFormat: TInputFormat;
type
IData = interface //data interface, so we do not have to care about memory managment
function rawData: string;
function baseUri: string;
function displayBaseUri: string;
function contenttype: string;
function headers: TStringList;
function recursionLevel: integer;
function inputFormat: TInputFormat;
end;
{ THtmlTemplateParserBreaker }
THtmlTemplateParserBreaker = class(THtmlTemplateParser)
ignorenamespaces: boolean;
procedure initParsingModel(const data: IData);
procedure parseHTML(const data: IData);
procedure parseHTMLSimple(const data: IData);
procedure closeVariableLog;
procedure parseDoc({%H-}sender: TXQueryEngine; html,uri,contenttype: string; var node: TTreeNode);
end;
{ TTemplateReaderBreaker }
TTemplateReaderBreaker = class(TMultipageTemplateReader)
constructor create();
destructor destroy(); override;
procedure setTemplate(atemplate: TMultiPageTemplate);
procedure perform(actions: TStringArray);
procedure selfLog({%H-}sender: TMultipageTemplateReader; logged: string; debugLevel: integer);
end;
//data processing classes
var htmlparser:THtmlTemplateParserBreaker;
xpathparser: TXQueryEngine;
multipage: TTemplateReaderBreaker;
multipagetemp: TMultiPageTemplate;
currentRoot: TTreeNode;
var firstGroup: boolean = true;
procedure writeBeginGroup;
begin
case outputFormat of
ofXMLWrapped: begin
wcolor('<e>', cXML);
end;
ofJsonWrapped: if not firstGroup then wcolor(', ' + LineEnding, cJSON);
else ;
end;
firstGroup := false;
end;
procedure writeEndGroup;
begin
case outputFormat of
ofXMLWrapped: begin
wcolor('</e>' + LineEnding, cXML);
end;
else ;
end;
end;
{procedure printBeginValueGroup;
begin
end;
procedure printBeginValue(varname: string);
begin
case outputFormat of
ofXMLWrapped: w('<e>');
end;
firstValue := false;
end;
procedure printInnerValueSeparator;
begin
if not firstValue then begin
w(outputSeparator);
//w(outputArraySeparator[outputFormat]);
end;
firstValue := false;
end;
procedure printEndValue;
begin
end;
procedure printEndValueGroup;
begin
end; }
function joined(s: array of string): string; //for command line help
var
i: Integer;
begin
if length(s) = 0 then exit('');
result := s[0];
for i:=1 to high(s) do result := result + LineEnding + s[i];
end;
function strLoadFromFileChecked(const fn: string): string;
begin
result := strLoadFromFileUTF8(fn);
if strBeginsWith(result, '#!') then result := strAfter(result, #10);
if Result = '' then raise EXidelException.Create('File '+fn+' is empty.');
end;
type
{ TOptionReaderWrapper }
TOptionReaderWrapper = class
function read(const name: string; out value: string): boolean; virtual; abstract;
function read(const name: string; out value: integer): boolean; virtual; abstract;
function read(const name: string; out value: boolean): boolean; virtual; abstract;
function read(const name: string; out value: Extended): boolean; virtual; abstract;
function read(const name: string; out value: IXQValue): boolean; virtual;
function read(const name: string; out inputformat: TInputFormat): boolean; virtual;
end;
{ TOptionReaderFromCommandLine }
TOptionReaderFromCommandLine = class(TOptionReaderWrapper)
constructor create(cmdLine: TCommandLineReader);
function read(const name: string; out value: string): boolean; override;
function read(const name: string; out value: integer): boolean; override;
function read(const name: string; out value: boolean): boolean; override;
function read(const name: string; out value: Extended): boolean; override;
private
acmdLine: TCommandLineReader;
end;
{ TOptionReaderFromObject }
TOptionReaderFromObject = class(TOptionReaderWrapper)
constructor create(aobj: TXQValueMapLike);
function read(const name: string; out value: string): boolean; override;
function read(const name: string; out value: integer): boolean; override;
function read(const name: string; out value: boolean): boolean; override;
function read(const name: string; out value: Extended): boolean; override;
function read(const name: string; out value: IXQValue): boolean; override;
private
obj: TXQValueMapLike;
end;
type
{ TData }
{ TDataObject }
TDataObject = class(TInterfacedObject, IData)
{private todo: optimize
fparsed: TTreeDocument;
function GetParsed: TTreeDocument;
public}
private
frawdata: string;
fbaseurl, fdisplaybaseurl: string;
fcontenttype: string;
frecursionLevel: integer;
finputformat: TInputFormat;
fheaders: TStringList;
public
function rawData: string;
function baseUri: string;
function displayBaseUri: string;
function contentType: string;
function headers: TStringList;
function recursionLevel: integer;
function inputFormat: TInputFormat;
constructor create(somedata: string; aurl: string; acontenttype: string = '');
destructor Destroy; override;
//property parsed:TTreeDocument read GetParsed;
end;
TDataProcessing = class;
TProcessingContext = class;
{ TFollowTo }
TFollowTo = class
nextAction: integer; //the next action after the action yielding the data, so an action does not process its own follows
inputFormat: TInputFormat;
class function createFromRetrievalAddress(data: string): TFollowTo;
function clone: TFollowTo; virtual; abstract;
function retrieve(parent: TProcessingContext; arecursionLevel: integer): IData; virtual; abstract;
procedure replaceVariables; virtual;
function equalTo(ft: TFollowTo): boolean; virtual; abstract;
procedure readOptions(reader: TOptionReaderWrapper); virtual;
procedure assign(other: TFollowTo); virtual;
end;
{ THTTPRequest }
THTTPRequest = class(TFollowTo)
private
variablesReplaced: boolean;
public
url: string;
method: string;
data: string;
header: string;
multipart: string;
rawURL: boolean;
constructor create(aurl: string);
function clone: TFollowTo; override;
function retrieve(parent: TProcessingContext; arecursionLevel: integer): IData; override;
procedure replaceVariables; override;
function equalTo(ft: TFollowTo): boolean; override;
procedure readOptions(reader: TOptionReaderWrapper); override;
end;
{ TFileRequest }
TFileRequest = class(TFollowTo)
url: string;
constructor create(aurl: string);
function clone: TFollowTo; override;
function retrieve(parent: TProcessingContext; arecursionLevel: integer): IData; override;
procedure replaceVariables; override;
function equalTo(ft: TFollowTo): boolean; override;
end;
{ TDirectDataRequest }
TDirectDataRequest = class(TFollowTo)
data: string;
constructor create(adata: string);
function clone: TFollowTo; override;
function retrieve({%H-}parent: TProcessingContext; arecursionLevel: integer): IData; override;
function equalTo(ft: TFollowTo): boolean; override;
//procedure replaceVariables; do not replace vars in direct data
end;
{ TStdinDataRequest }
TStdinDataRequest = class(TFollowTo)
function clone: TFollowTo; override;
function retrieve({%H-}parent: TProcessingContext; arecursionLevel: integer): IData; override;
function equalTo(ft: TFollowTo): boolean; override;
end;
{ TFollowToProcessedData }
TFollowToProcessedData = class(TFollowTo)
data: IData;
constructor create(d: IData);
function clone: TFollowTo; override;
function retrieve({%H-}parent: TProcessingContext; arecursionLevel: integer): IData; override;
function equalTo(ft: TFollowTo): boolean; override;
end;
TFollowToXQVObject = class(TFollowTo)
v: IXQValue;
basedata: IData;
constructor create(const abasedata: IData; const av: IXQValue);
function clone: TFollowTo; override;
function retrieve(parent: TProcessingContext; arecursionLevel: integer): IData; override;
function equalTo(ft: TFollowTo): boolean; override;
end;
{TFollowXQV = class(TFollowTo)
xqv: TXQValue;
//can be url/http-request, file(?), data
//object with arbitrary options
//sequence of previous
end;}
{ TFollowToList }
TFollowToList = class(TFpObjectList)
constructor Create;
procedure merge(l: TFollowToList; nextAction: integer = 0);
function first: TFollowTo;
procedure add(ft: TFollowTo);
procedure merge(dest: IXQValue; basedata: IData; parent: TProcessingContext);
function containsEqual(ft: TFollowTo): boolean;
private
procedure addBasicUrl(absurl: string; baseurl: string; inputFormat: TInputFormat);
procedure addObject(absurl: string; baseurl: string; options: TXQValueMapLike; fallBackInputFormat: TInputFormat);
end;
{ TDataProcessing }
TDataProcessing = class
parent: TProcessingContext;
function process(data: IData): TFollowToList; virtual; abstract;
procedure readOptions({%H-}reader: TOptionReaderWrapper); virtual;
procedure initFromCommandLine(cmdLine: TCommandLineReader); virtual;
procedure mergeWithObject(obj: TXQValueMapLike); virtual;
function clone(newparent: TProcessingContext): TDataProcessing; virtual; abstract;
end;
{ TDownload }
TDownload = class(TDataProcessing)
downloadTarget: string;
function process(data: IData): TFollowToList; override;
procedure readOptions(reader: TOptionReaderWrapper); override;
function clone(newparent: TProcessingContext): TDataProcessing; override;
end;
{ TExtraction }
TExtraction = class(TDataProcessing)
extract: string;
extractQueryCache: IXQuery;
extractExclude, extractInclude: TStringArray;
extractKind: TExtractionKind;
extractBaseUri: string;
templateActions: TStringArray;
defaultName: string;
printVariables: set of (pvLog, pvCondensedLog, pvFinal);
printTypeAnnotations, hideVariableNames: boolean;
printedNodeFormat: TTreeNodeSerialization;
printedJSONFormat: (jisDefault, jisPretty, jisCompact);
inplaceOverride: boolean;
inputFormat: TInputFormat;
constructor create;
procedure readOptions(reader: TOptionReaderWrapper); override;
procedure setVariables(v: string);
procedure printExtractedValue(value: IXQValue; invariable: boolean);
procedure printCmdlineVariable(const name: string; const value: IXQValue);
procedure printExtractedVariables(vars: TXQVariableChangeLog; state: string; showDefaultVariable: boolean);
procedure printExtractedVariables(parser: THtmlTemplateParser; showDefaultVariableOverride: boolean);
function process(data: IData): TFollowToList; override;
procedure assignOptions(other: TExtraction);
function clone(newparent: TProcessingContext): TDataProcessing; override;
private
currentFollowList: TFollowToList;
currentData: IData;
procedure pageProcessed({%H-}unused: TMultipageTemplateReader; parser: THtmlTemplateParser);
procedure prepareForOutput(const data: IData);
end;
{ TFollowToWrapper }
TFollowToWrapper = class(TDataProcessing)
followTo: TFollowTo;
procedure readOptions(reader: TOptionReaderWrapper); override;
function process(data: IData): TFollowToList; override;
function clone(newparent: TProcessingContext): TDataProcessing; override;
destructor Destroy; override;
end;
{ TProcessingContext }
//Processing is done in processing contexts
//A processing context can have its own data sources (TFollowTo or data sources of a nested processing context) or receive the data from its parent
//To every data source actions are applied (e.g. tdownload or textraction). These actions can also yield new data sources (e.g. follow := assignments or nested processing contexts with yieldDataToParent)
//The expression in follow is evaluated and the resulting data processed in the context followTo
//Then processing continues in nextSibling
//Remaining unprocessed data is passed to the parent
TProcessingContext = class(TDataProcessing)
dataSources: array of TDataProcessing; //data sources, e.g. a list of URLs
actions: array of TDataProcessing; //actions e.g. a download target
follow: string;
followKind: TExtractionKind;
followQueryCache: IXQuery;
followExclude, followInclude: TStringArray;
followTo: TProcessingContext;
followMaxLevel: integer;
followInputFormat: TInputFormat;
nextSibling: TProcessingContext;
wait: Extended;
userAgent: string;
proxy: string;
printReceivedHeaders: boolean;
errorHandling: string;
loadCookies, saveCookies: string;
silent, printPostData: boolean;
ignoreNamespace: boolean;
compatibilityJSONMode: (cjmDefault, cjmStandard, cjmJSONiq, cjmDeprecated);
compatibilityNoExtendedStrings,compatibilityNoJSON, compatibilityNoJSONliterals, compatibilityOnlyJSONObjects, compatibilityNoExtendedJson, compatibilityStrictTypeChecking, compatibilityStrictNamespaces: boolean;
compatibilityDotNotation: TXQPropertyDotNotation;
noOptimizations: boolean;
yieldDataToParent: boolean;
procedure printStatus(s: string);
procedure readOptions(reader: TOptionReaderWrapper); override;
procedure mergeWithObject(obj: TXQValueMapLike); override;
procedure addNewDataSource(source: TDataProcessing);
procedure readNewDataSource(data: TFollowTo; options: TOptionReaderWrapper);
procedure addNewAction(action: TDataProcessing);
procedure readNewAction(action: TDataProcessing; options: TOptionReaderWrapper);
procedure assignOptions(other: TProcessingContext);
procedure assignActions(other: TProcessingContext);
function clone(newparent: TProcessingContext): TDataProcessing; override;
function last: TProcessingContext; //returns the last context in this sibling/follow chain
procedure insertFictiveDatasourceIfNeeded; //if no data source is given in an expression (or an subexpression), but an aciton is there, <empty/> is added as data source
function process(data: IData): TFollowToList; override;
class function replaceEnclosedExpressions(expr: string): string;
function replaceEnclosedExpressions(data: IData; expr: string): string;
destructor destroy; override;
private
stupidHTTPReactionHackFlag: integer;
procedure loadDataForQueryPreParse(const data: IData);
procedure loadDataForQuery(const data: IData; const query: IXQuery);
function evaluateQuery(const query: IXQuery; const data: IData; const allowWithoutReturnValue: boolean = false): IXQValue;
procedure httpReact (sender: TInternetAccess; var {%H-}method: string; var {%H-}url: TDecodedUrl; var {%H-}data:TInternetAccessDataBlock; var reaction: TInternetAccessReaction);
end;
var globalCurrentExtraction: TExtraction;
type EInvalidArgument = Exception;
constructor TFollowToXQVObject.create(const abasedata: IData; const av: IXQValue);
begin
basedata := abasedata;
v := av;
end;
function TFollowToXQVObject.clone: TFollowTo;
begin
result := TFollowToXQVObject.create(basedata, v);
end;
function TFollowToXQVObject.retrieve(parent: TProcessingContext; arecursionLevel: integer): IData;
var
temp: TProcessingContext;
fl: TFollowToList;
begin
result := nil;
if parent = nil then exit();
temp := TProcessingContext.Create();
fl := TFollowToList.Create;
temp.assignOptions(parent); //do not copy actions/data sources. they would apply to basedata, not to dest
temp.parent := parent;
temp.follow := parent.follow; //need to copy follow and follow-to, so it follows to the new data
temp.followKind := parent.followKind;
temp.followTo := parent.followTo;
temp.followInputFormat := parent.followInputFormat;
temp.nextSibling := parent.nextSibling;
temp.mergeWithObject(v as TXQValueMapLike);
fl := temp.process(basedata);
case fl.count of
0: ;
1: result := fl.first.retrieve(temp, arecursionLevel );
else raise Exception.Create('Invalid follow to count: ' + inttostr(fl.Count));
end;
temp.followTo := nil;
temp.nextSibling := nil;
temp.Free;
end;
function TFollowToXQVObject.equalTo(ft: TFollowTo): boolean;
begin
if not (ft is TFollowToXQVObject) then exit(false);
result := false;//not working: xpathparser.StaticContext.compareDeepAtomic(v, TFollowToXQVObject(ft).v, xpathparser.StaticContext.collation) = 0;
end;
{ TOptionReaderWrapper }
function TOptionReaderWrapper.read(const name: string; out value: IXQValue): boolean;
begin
result := false;
end;
function TOptionReaderWrapper.read(const name: string ; out inputformat: TInputFormat): boolean;
var
temp: String;
begin
result := read('input-format', temp);
if result then
case temp of
'auto': inputFormat:=ifAuto;
'xml': inputFormat:=ifXML;
'html': inputFormat:=ifHTML;
'xml-strict': inputFormat:=ifXMLStrict;
'json': inputFormat := ifJSON;
'json-strict': inputFormat := ifJSONStrict
else raise EXidelException.Create('Invalid input-format: '+temp);
end;
end;
{ TDataObject }
function TDataObject.rawData: string;
begin
result := frawdata;
end;
function TDataObject.baseUri: string;
begin
result := fbaseurl;
end;
function TDataObject.displayBaseUri: string;
begin
result := fdisplaybaseurl;
end;
function TDataObject.contentType: string;
begin
result := fcontenttype;
end;
function TDataObject.headers: TStringList;
begin
result := fheaders;
end;
function TDataObject.recursionLevel: integer;
begin
result := frecursionLevel;
end;
function TDataObject.inputFormat: TInputFormat;
const FormatMap: array[TInternetToolsFormat] of TInputFormat = ( ifXML, ifHTML, ifJSON, ifXML );
var
enc: TSystemCodePage;
begin
if finputformat = ifAuto then begin
finputformat := FormatMap[guessFormat(rawData, baseUri, contentType)];
if (finputformat in [ifJSON,ifJSONStrict]) and (hasOutputEncoding <> oePassRaw) then begin
//convert json to utf-8, because the regex parser does not match non-utf8 (not even with . escape)
//it might be useful to convert other data, but the x/html parser does its own encoding detection
enc := strEncodingFromContentType(contentType);
if enc = CP_NONE then
if isInvalidUTF8(frawData) and not strContains(frawData, #0) then enc := CP_WINDOWS1252;
if (enc <> CP_UTF8) and (enc <> CP_NONE) then frawdata := strConvertToUtf8(frawData, enc);
end;
end;
result := finputFormat;
end;
{ TFollowToProcessedData }
constructor TFollowToProcessedData.create(d: IData);
begin
data := d;
end;
function TFollowToProcessedData.clone: TFollowTo;
begin
result := TFollowToProcessedData.Create(data);
result.inputFormat := inputFormat;
end;
function TFollowToProcessedData.retrieve(parent: TProcessingContext; arecursionLevel: integer): IData;
begin
result := data;
if data <> nil then begin
(result as TDataObject).finputFormat := self.inputFormat;
(result as TDataObject).frecursionLevel := arecursionLevel;
end;
end;
function TFollowToProcessedData.equalTo(ft: TFollowTo): boolean;
begin
result := (ft is TFollowToProcessedData) and (TFollowToProcessedData(ft).data = data);
end;
{ TOptionReaderFromObject }
constructor TOptionReaderFromObject.create(aobj: TXQValueMapLike);
begin
obj := aobj;
end;
function TOptionReaderFromObject.read(const name: string; out value: string): boolean;
var
temp: TXQValue;
begin
result := obj.hasProperty(name, @temp);
if result then value := temp.toString;
end;
function TOptionReaderFromObject.read(const name: string; out value: integer): boolean;
var
temp: TXQValue;
begin
result := obj.hasProperty(name, @temp);
if result then value := temp.toInt64;
end;
function TOptionReaderFromObject.read(const name: string; out value: boolean): boolean;
var
temp: TXQValue;
begin
result := obj.hasProperty(name, @temp);
if result then value := temp.toBoolean;
end;
function TOptionReaderFromObject.read(const name: string; out value: Extended): boolean;
var
temp: TXQValue;
begin
result := obj.hasProperty(name, @temp);
if result then value := temp.toFloat;
end;
function TOptionReaderFromObject.read(const name: string; out value: IXQValue): boolean;
var
temp: TXQValue;
begin
result := obj.hasProperty(name, @temp);
if result then value := temp as TXQValue;
end;
{ TOptionReaderFromCommandLine }
constructor TOptionReaderFromCommandLine.create(cmdLine: TCommandLineReader);
begin
acmdLine := cmdLine;
end;
function TOptionReaderFromCommandLine.read(const name: string; out value: string): boolean;
begin
value := acmdLine.readString(name);
result := acmdLine.existsProperty(name);
end;
function TOptionReaderFromCommandLine.read(const name: string; out value: integer): boolean;
begin
value := acmdLine.readInt(name);
result := acmdLine.existsProperty(name);
end;
function TOptionReaderFromCommandLine.read(const name: string; out value: boolean): boolean;
begin
value := acmdLine.readFlag(name);
result := acmdLine.existsProperty(name);
end;
function TOptionReaderFromCommandLine.read(const name: string; out value: Extended): boolean;
begin
value := acmdLine.readFloat(name);
result := acmdLine.existsProperty(name);
end;
{ TDownload }
function TDownload.process(data: IData): TFollowToList;
var
realUrl: String;
j: LongInt;
realPath: String;
realFile: String;
downloadTo: String;
color: TColorOptions;
begin
result := nil;
if cgimode or not allowFileAccess then
raise EXidelException.Create('Download not permitted');
realUrl := data.baseUri;
if guessType(realUrl) = rtRemoteURL then realurl := decodeURL(realUrl).path;
j := strRpos('/', realUrl);
if j = 0 then begin
realPath := '';
realFile := realUrl;
end else begin
realPath := copy(realUrl, 1, j);
realFile := copy(realUrl, j + 1, length(realUrl) - j)
end;
while strBeginsWith(realPath, '/') do delete(realPath,1,1);
downloadTo := parent.replaceEnclosedExpressions(data, Self.downloadTarget);
if striBeginsWith(downloadTo, 'http://') then delete(downloadTo, 1, length('http://'));
if striBeginsWith(downloadTo, 'https://') then delete(downloadTo, 1, length('https://'));
{$ifdef win32}
downloadTo := StringReplace(downloadTo, '\' , '/', [rfReplaceAll]);
{$endif}
//If downloadTo is a file : save with that name
//If downloadTo is a directory and does not end with / : save with basename
//If downloadTo is a directory and does end with / : save with path and basename
//If downloadTo is - : print to stdout
//example: Download abc/def/index.html
// foo/bar/xyz save in directory foo/bar with name xyz
// foo/bar/ save in directory foo/bar/abc/def with name index.html
// foo/bar/. save in directory foo/bar with name index.html
// foo save in current directory with name foo
// ./ save in current directory/abc/def with name index.html
// ./. save in current directory with name index.html
// . save in current directory with name index.html
// - print to stdout
if downloadTo = '-' then begin
color := colorizing;
if color in [cAlways, cAuto] then
case data.inputFormat of
ifHTML, ifXML, ifXMLStrict: color := cXML;
ifJSON, ifJSONStrict: color := cJSON;
ifAuto: ;
end;
if xidelOutputFileName = '' then setOutputFileName('stdout:///', mycmdline);
wcolor(data.rawdata, color);
exit;
end;
if strEndsWith(downloadTo, '/.') then downloadTo := downloadTo + '/' + realFile
else if strEndsWith(downloadTo, '/') then downloadTo := downloadTo + '/' + realPath + realFile
else if DirectoryExists(downloadTo) or (downloadTo = '.' { <- redunant check, but safety first }) then downloadTo := downloadTo + '/' + realFile;
if strEndsWith(downloadTo, '/') or (downloadTo = '') then downloadTo += 'index.html'; //sometimes realFile is empty
parent.printStatus('**** Save as: '+downloadTo+' ****');
if pos('/', downloadTo) > 0 then
ForceDirectories(StringReplace(StringReplace(copy(downloadTo, 1, strRpos('/', downloadTo)-1), '//', '/', [rfReplaceAll]), '/', DirectorySeparator, [rfReplaceAll]));
strSaveToFileUTF8(StringReplace(downloadTo, '/', DirectorySeparator, [rfReplaceAll]), data.rawdata);
end;
procedure TDownload.readOptions(reader: TOptionReaderWrapper);
begin
reader.read('download', downloadTarget);
end;
function TDownload.clone(newparent: TProcessingContext): TDataProcessing;
begin
result := TDownload.Create;
result.parent := newparent;
TDownload(result).downloadTarget:=downloadTarget;
end;
{ THTTPRequest }
constructor THTTPRequest.create(aurl: string);
begin
url := aurl;
end;
function THTTPRequest.clone: TFollowTo;
begin
result := THTTPRequest.create(url);
THTTPRequest(result).method:=method;
THTTPRequest(result).data:=data;
THTTPRequest(result).header:=header;
THTTPRequest(result).multipart:=multipart;
THTTPRequest(result).variablesReplaced:=variablesReplaced;
THTTPRequest(result).rawURL:=rawURL;
result.assign(self);
end;
function THTTPRequest.retrieve(parent: TProcessingContext; arecursionLevel: integer): IData;
var escapedURL: string;
var
i: Integer;
d: TDataObject;
begin
if not allowInternetAccess then raise EXidelException.Create('Internet access not permitted');
if assigned(onPrepareInternet) then internet := onPrepareInternet(parent.userAgent, parent.proxy, @parent.httpReact);
if (parent.loadCookies <> '') then begin
internet.cookies.loadFromFile(parent.loadCookies);
parent.loadCookies := ''; //only need to load them once?
end;
escapedURL := url;
if not rawURL then escapedURL := TInternetAccess.urlEncodeData(url, ueXPathHTML4);
parent.printStatus('**** Retrieving ('+method+'): '+escapedURL+' ****');
if parent.printPostData and (data <> '') then parent.printStatus(data);
result := TDataObject.create('', escapedURL);
if assigned(onRetrieve) then begin
parent.stupidHTTPReactionHackFlag := 0;
(result as TDataObject).frawdata := onRetrieve(method, escapedURL, data, header);
case parent.stupidHTTPReactionHackFlag of
1: (result as TDataObject).frawdata := '';
2: exit(nil);
end;
if assigned(internet) then begin
(result as TDataObject).fbaseurl := internet.lastUrl;
(result as TDataObject).fdisplaybaseurl := internet.lastUrl;
end;
end;
if parent.printReceivedHeaders and assigned(internet) then begin
parent.printStatus('** Headers: (status: '+inttostr(internet.lastHTTPResultCode)+')**');
for i:=0 to internet.lastHTTPHeaders.Count-1 do
wln(internet.lastHTTPHeaders[i]);
end;
if Assigned(internet) then begin
d := (result as TDataObject);
d.fcontenttype := internet.getLastContentType;
d.fheaders := TStringList.Create;
for i := 0 to internet.lastHTTPHeaders.count - 1 do
d.fheaders.Add(internet.lastHTTPHeaders[i]);
end;
with result as TDataObject do begin
finputFormat := self.inputFormat;