harupdf.utils.pas

unit harupdf.utils;

{ MIT License

 Copyright (c) 2017 THaruPDF, Damian Woroch, http://r1me.pl

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE. }

{$IFDEF FPC}{$mode objfpc}{$H+}{$ENDIF}

interface
uses
{$IFNDEF FPC}
  System.Types, System.DateUtils,
{$ELSE}
  Types, Dateutils,
{$ENDIF}
  hpdf_consts,
  hpdf_error,
  hpdf_types,
  hpdf;

{$IFDEF FPC}
type
  PUTF8Char = PAnsiChar;
{$ENDIF}

function PUTF8CharToString(AUTF8Char: PUTF8Char): String;
function StringToPUTF8Char(AString: String; ADefaultReturnVal: Pointer = nil): PUTF8Char; inline;
function BooleanToHaruBool(AValue: Boolean): HPDF_BOOL;
function RectFToHaruRect(ARect: TRectF): THPDF_Rect;
{$IFDEF FPC}function RectF(Left, Top, Right, Bottom: Single): TRectF;{$ENDIF}
function PointFToHaruPoint(APoint: TPointF): THPDF_Point;
function DateTimeToHPDFDate(ADateTime: TDateTime): THPDF_Date;
function HaruErrorToString(AErrorCode: HPDF_Status): String;

implementation
uses
{$IFNDEF FPC}
  System.Classes,
  System.SysUtils
{$ELSE}
  Classes,
  SysUtils
{$ENDIF}
  ;

function PUTF8CharToString(AUTF8Char: PUTF8Char): String;
var
  utfString: UTF8String;
begin
  Result := '';
  if Assigned(AUTF8Char) then
  begin
    SetString(utfString, AUTF8Char, Length(AUTF8Char));
    Result := String(utfString);
  end;
end;

function StringToPUTF8Char(AString: String; ADefaultReturnVal: Pointer): PUTF8Char; inline;
begin
  Result := ADefaultReturnVal;

  if (AString <> '') then
    Result := PUTF8Char(UTF8Encode(AString));
end;

function BooleanToHaruBool(AValue: Boolean): HPDF_BOOL;
begin
  if AValue then
    Result := HPDF_TRUE
  else
    Result := HPDF_FALSE;
end;

function RectFToHaruRect(ARect: TRectF): THPDF_Rect;
begin
  Result.left := ARect.Left;
  Result.bottom := ARect.Bottom;
  Result.right := ARect.Right;
  Result.top := ARect.Top;
end;

{$IFDEF FPC}
function RectF(Left, Top, Right, Bottom: Single): TRectF;
begin
  RectF.Left := Left;
  RectF.Top := Top;
  RectF.Right := Right;
  RectF.Bottom := Bottom;
end;
{$ENDIF}

function PointFToHaruPoint(APoint: TPointF): THPDF_Point;
begin
  Result.x := APoint.X;
  Result.y := APoint.Y;
end;

function DateTimeToHPDFDate(ADateTime: TDateTime): THPDF_Date;
var
  year, month, day, hour, minute, second, ms: Word;
begin
  DecodeDateTime(ADateTime, year, month, day, hour, minute, second, ms);
  Result.year := year;
  Result.month := month;
  Result.day := day;
  Result.hour := hour;
  Result.minutes := minute;
  Result.seconds := second;
  Result.ind := ' ';
  Result.off_hour := 0;
  Result.off_minutes := 0;
end;

function HaruErrorToString(AErrorCode: HPDF_Status): String;
begin
  case AErrorCode of
    HPDF_ARRAY_COUNT_ERR: Result := 'HPDF_ARRAY_COUNT_ERR';
    HPDF_ARRAY_ITEM_NOT_FOUND: Result := 'HPDF_ARRAY_ITEM_NOT_FOUND';
    HPDF_ARRAY_ITEM_UNEXPECTED_TYPE: Result := 'HPDF_ARRAY_ITEM_UNEXPECTED_TYPE';
    HPDF_BINARY_LENGTH_ERR: Result := 'HPDF_BINARY_LENGTH_ERR';
    HPDF_CANNOT_GET_PALLET: Result := 'HPDF_CANNOT_GET_PALLET';
    HPDF_DICT_COUNT_ERR: Result := 'HPDF_DICT_COUNT_ERR';
    HPDF_DICT_ITEM_NOT_FOUND: Result := 'HPDF_DICT_ITEM_NOT_FOUND';
    HPDF_DICT_ITEM_UNEXPECTED_TYPE: Result := 'HPDF_DICT_ITEM_UNEXPECTED_TYPE';
    HPDF_DICT_STREAM_LENGTH_NOT_FOUND: Result := 'HPDF_DICT_STREAM_LENGTH_NOT_FOUND';
    HPDF_DOC_ENCRYPTDICT_NOT_FOUND: Result := 'HPDF_DOC_ENCRYPTDICT_NOT_FOUND';
    HPDF_DOC_INVALID_OBJECT: Result := 'HPDF_DOC_INVALID_OBJECT';
    HPDF_DUPLICATE_REGISTRATION: Result := 'HPDF_DUPLICATE_REGISTRATION';
    HPDF_ENCRYPT_INVALID_PASSWORD: Result := 'HPDF_ENCRYPT_INVALID_PASSWORD';
    HPDF_ERR_UNKNOWN_CLASS: Result := 'HPDF_ERR_UNKNOWN_CLASS';
    HPDF_EXCEED_GSTATE_LIMIT: Result := 'HPDF_EXCEED_GSTATE_LIMIT';
    HPDF_FAILD_TO_ALLOC_MEM: Result := 'HPDF_FAILD_TO_ALLOC_MEM';
    HPDF_FILE_IO_ERROR: Result := 'HPDF_FILE_IO_ERROR';
    HPDF_FILE_OPEN_ERROR: Result := 'HPDF_FILE_OPEN_ERROR';
    HPDF_FONT_EXISTS: Result := 'HPDF_FONT_EXISTS';
    HPDF_FONT_INVALID_WIDTHS_TABLE: Result := 'HPDF_FONT_INVALID_WIDTHS_TABLE';
    HPDF_INVALID_AFM_HEADER: Result := 'HPDF_INVALID_AFM_HEADER';
    HPDF_INVALID_ANNOTATION: Result := 'HPDF_INVALID_ANNOTATION';
    HPDF_INVALID_BIT_PER_COMPONENT: Result := 'HPDF_INVALID_BIT_PER_COMPONENT';
    HPDF_INVALID_CHAR_MATRICS_DATA: Result := 'HPDF_INVALID_CHAR_MATRICS_DATA';
    HPDF_INVALID_COLOR_SPACE: Result := 'HPDF_INVALID_COLOR_SPACE';
    HPDF_INVALID_COMPRESSION_MODE: Result := 'HPDF_INVALID_COMPRESSION_MODE';
    HPDF_INVALID_DATE_TIME: Result := 'HPDF_INVALID_DATE_TIME';
    HPDF_INVALID_DESTINATION: Result := 'HPDF_INVALID_DESTINATION';
    HPDF_INVALID_DOCUMENT: Result := 'HPDF_INVALID_DOCUMENT';
    HPDF_INVALID_DOCUMENT_STATE: Result := 'HPDF_INVALID_DOCUMENT_STATE';
    HPDF_INVALID_ENCODER: Result := 'HPDF_INVALID_ENCODER';
    HPDF_INVALID_ENCODER_TYPE: Result := 'HPDF_INVALID_ENCODER_TYPE';
    HPDF_INVALID_ENCODING_NAME: Result := 'HPDF_INVALID_ENCODING_NAME';
    HPDF_INVALID_ENCRYPT_KEY_LEN: Result := 'HPDF_INVALID_ENCRYPT_KEY_LEN';
    HPDF_INVALID_FONTDEF_DATA: Result := 'HPDF_INVALID_FONTDEF_DATA';
    HPDF_INVALID_FONTDEF_TYPE: Result := 'HPDF_INVALID_FONTDEF_TYPE';
    HPDF_INVALID_FONT_NAME: Result := 'HPDF_INVALID_FONT_NAME';
    HPDF_INVALID_IMAGE: Result := 'HPDF_INVALID_IMAGE';
    HPDF_INVALID_JPEG_DATA: Result := 'HPDF_INVALID_JPEG_DATA';
    HPDF_INVALID_N_DATA: Result := 'HPDF_INVALID_N_DATA';
    HPDF_INVALID_OBJECT: Result := 'HPDF_INVALID_OBJECT';
    HPDF_INVALID_OBJ_ID: Result := 'HPDF_INVALID_OBJ_ID';
    HPDF_INVALID_OPERATION: Result := 'HPDF_INVALID_OPERATION';
    HPDF_INVALID_OUTLINE: Result := 'HPDF_INVALID_OUTLINE';
    HPDF_INVALID_PAGE: Result := 'HPDF_INVALID_PAGE';
    HPDF_INVALID_PAGES: Result := 'HPDF_INVALID_PAGES';
    HPDF_INVALID_PARAMETER: Result := 'HPDF_INVALID_PARAMETER';
    HPDF_INVALID_PNG_IMAGE: Result := 'HPDF_INVALID_PNG_IMAGE';
    HPDF_INVALID_STREAM: Result := 'HPDF_INVALID_STREAM';
    HPDF_MISSING_FILE_NAME_ENTRY: Result := 'HPDF_MISSING_FILE_NAME_ENTRY';
    HPDF_INVALID_TTC_FILE: Result := 'HPDF_INVALID_TTC_FILE';
    HPDF_INVALID_TTC_INDEX: Result := 'HPDF_INVALID_TTC_INDEX';
    HPDF_INVALID_WX_DATA: Result := 'HPDF_INVALID_WX_DATA';
    HPDF_ITEM_NOT_FOUND: Result := 'HPDF_ITEM_NOT_FOUND';
    HPDF_LIBPNG_ERROR: Result := 'HPDF_LIBPNG_ERROR';
    HPDF_NAME_INVALID_VALUE: Result := 'HPDF_NAME_INVALID_VALUE';
    HPDF_NAME_OUT_OF_RANGE: Result := 'HPDF_NAME_OUT_OF_RANGE';
    HPDF_PAGE_INVALID_PARAM_COUNT: Result := 'HPDF_PAGE_INVALID_PARAM_COUNT';
    HPDF_PAGES_MISSING_KIDS_ENTRY: Result := 'HPDF_PAGES_MISSING_KIDS_ENTRY';
    HPDF_PAGE_CANNOT_FIND_OBJECT: Result := 'HPDF_PAGE_CANNOT_FIND_OBJECT';
    HPDF_PAGE_CANNOT_GET_ROOT_PAGES: Result := 'HPDF_PAGE_CANNOT_GET_ROOT_PAGES';
    HPDF_PAGE_CANNOT_RESTORE_GSTATE: Result := 'HPDF_PAGE_CANNOT_RESTORE_GSTATE';
    HPDF_PAGE_CANNOT_SET_PARENT: Result := 'HPDF_PAGE_CANNOT_SET_PARENT';
    HPDF_PAGE_FONT_NOT_FOUND: Result := 'HPDF_PAGE_FONT_NOT_FOUND';
    HPDF_PAGE_INVALID_FONT: Result := 'HPDF_PAGE_INVALID_FONT';
    HPDF_PAGE_INVALID_FONT_SIZE: Result := 'HPDF_PAGE_INVALID_FONT_SIZE';
    HPDF_PAGE_INVALID_GMODE: Result := 'HPDF_PAGE_INVALID_GMODE';
    HPDF_PAGE_INVALID_INDEX: Result := 'HPDF_PAGE_INVALID_INDEX';
    HPDF_PAGE_INVALID_ROTATE_VALUE: Result := 'HPDF_PAGE_INVALID_ROTATE_VALUE';
    HPDF_PAGE_INVALID_SIZE: Result := 'HPDF_PAGE_INVALID_SIZE';
    HPDF_PAGE_INVALID_XOBJECT: Result := 'HPDF_PAGE_INVALID_XOBJECT';
    HPDF_PAGE_OUT_OF_RANGE: Result := 'HPDF_PAGE_OUT_OF_RANGE';
    HPDF_REAL_OUT_OF_RANGE: Result := 'HPDF_REAL_OUT_OF_RANGE';
    HPDF_STREAM_EOF: Result := 'HPDF_STREAM_EOF';
    HPDF_STREAM_READLN_CONTINUE: Result := 'HPDF_STREAM_READLN_CONTINUE';
    HPDF_STRING_OUT_OF_RANGE: Result := 'HPDF_STRING_OUT_OF_RANGE';
    HPDF_THIS_FUNC_WAS_SKIPPED: Result := 'HPDF_THIS_FUNC_WAS_SKIPPED';
    HPDF_TTF_CANNOT_EMBEDDING_FONT: Result := 'HPDF_TTF_CANNOT_EMBEDDING_FONT';
    HPDF_TTF_INVALID_CMAP: Result := 'HPDF_TTF_INVALID_CMAP';
    HPDF_TTF_INVALID_FOMAT: Result := 'HPDF_TTF_INVALID_FOMAT';
    HPDF_TTF_MISSING_TABLE: Result := 'HPDF_TTF_MISSING_TABLE';
    HPDF_UNSUPPORTED_FONT_TYPE: Result := 'HPDF_UNSUPPORTED_FONT_TYPE';
    HPDF_UNSUPPORTED_FUNC: Result := 'HPDF_UNSUPPORTED_FUNC';
    HPDF_UNSUPPORTED_JPEG_FORMAT: Result := 'HPDF_UNSUPPORTED_JPEG_FORMAT';
    HPDF_UNSUPPORTED_TYPE1_FONT: Result := 'HPDF_UNSUPPORTED_TYPE1_FONT';
    HPDF_XREF_COUNT_ERR: Result := 'HPDF_XREF_COUNT_ERR';
    HPDF_ZLIB_ERROR: Result := 'HPDF_ZLIB_ERROR';
    HPDF_INVALID_PAGE_INDEX: Result := 'HPDF_INVALID_PAGE_INDEX';
    HPDF_INVALID_URI: Result := 'HPDF_INVALID_URI';
    HPDF_PAGE_LAYOUT_OUT_OF_RANGE: Result := 'HPDF_PAGE_LAYOUT_OUT_OF_RANGE';
    HPDF_PAGE_MODE_OUT_OF_RANGE: Result := 'HPDF_PAGE_MODE_OUT_OF_RANGE';
    HPDF_PAGE_NUM_STYLE_OUT_OF_RANGE: Result := 'HPDF_PAGE_NUM_STYLE_OUT_OF_RANGE';
    HPDF_ANNOT_INVALID_ICON: Result := 'HPDF_ANNOT_INVALID_ICON';
    HPDF_ANNOT_INVALID_BORDER_STYLE: Result := 'HPDF_ANNOT_INVALID_BORDER_STYLE';
    HPDF_PAGE_INVALID_DIRECTION: Result := 'HPDF_PAGE_INVALID_DIRECTION';
    HPDF_INVALID_FONT: Result := 'HPDF_INVALID_FONT';
    HPDF_PAGE_INSUFFICIENT_SPACE: Result := 'HPDF_PAGE_INSUFFICIENT_SPACE';
    HPDF_PAGE_INVALID_DISPLAY_TIME: Result := 'HPDF_PAGE_INVALID_DISPLAY_TIME';
    HPDF_PAGE_INVALID_TRANSITION_TIME: Result := 'HPDF_PAGE_INVALID_TRANSITION_TIME';
    HPDF_INVALID_PAGE_SLIDESHOW_TYPE: Result := 'HPDF_INVALID_PAGE_SLIDESHOW_TYPE';
    HPDF_EXT_GSTATE_OUT_OF_RANGE: Result := 'HPDF_EXT_GSTATE_OUT_OF_RANGE';
    HPDF_INVALID_EXT_GSTATE: Result := 'HPDF_INVALID_EXT_GSTATE';
    HPDF_EXT_GSTATE_READ_ONLY: Result := 'HPDF_EXT_GSTATE_READ_ONLY';
    HPDF_INVALID_U3D_DATA: Result := 'HPDF_INVALID_U3D_DATA';
    HPDF_NAME_CANNOT_GET_NAMES: Result := 'HPDF_NAME_CANNOT_GET_NAMES';
    HPDF_INVALID_ICC_COMPONENT_NUM: Result := 'HPDF_INVALID_ICC_COMPONENT_NUM';
    HPDF_TOO_SMALL_PDF_VERSION: Result := 'HPDF_TOO_SMALL_PDF_VERSION';
    HPDF_CONVERTER_NOT_FOUND: Result := 'HPDF_CONVERTER_NOT_FOUND';
    HPDF_NOT_UTF_ENCODING: Result := 'HPDF_NOT_UTF_ENCODING';
    HPDF_FAILD_TO_NEW_CONVERTER: Result := 'HPDF_FAILD_TO_NEW_CONVERTER';
    HPDF_UNMATCHED_RELIEF_FONT: Result := 'HPDF_UNMATCHED_RELIEF_FONT';
    HPDF_LOOPED_RELIEF_FONT: Result := 'HPDF_LOOPED_RELIEF_FONT';
  else
    Result := 'HPDF_OTHER_ERROR';
  end;
end;

end.