DIM SHARED Cache_Folder AS STRING
Cache_Folder$ = "internal\help"
IF INSTR(_OS$, "WIN") = 0 THEN Cache_Folder$ = "internal/help"
IF _DIREXISTS("internal") = 0 THEN GOTO NoInternalFolder
IF _DIREXISTS(Cache_Folder$) = 0 THEN MKDIR Cache_Folder$
DIM SHARED Help_sx, Help_sy, Help_cx, Help_cy
DIM SHARED Help_Select, Help_cx1, Help_cy1, Help_SelX1, Help_SelX2, Help_SelY1, Help_SelY2
DIM SHARED Help_MSelect
Help_sx = 1: Help_sy = 1: Help_cx = 1: Help_cy = 1
DIM SHARED Help_wx1, Help_wy1, Help_wx2, Help_wy2 'defines the text section of the help window on-screen
DIM SHARED Help_ww, Help_wh 'width & height of text region
DIM SHARED help_h, help_w 'width & height
DIM SHARED Help_Txt$ '[chr][col][link-byte1][link-byte2]
DIM SHARED Help_Txt_Len
DIM SHARED Help_Pos, Help_Wrap_Pos
DIM SHARED Help_Line$ 'index of first txt element of a line
DIM SHARED Help_Link$ 'the link info [sep][type:]...[sep]
DIM SHARED Help_Link_Sep$: Help_Link_Sep$ = CHR$(13)
DIM SHARED Help_LinkN
'Link Types:
' PAGE:wikipagename
' EXTL:external link url
DIM SHARED Help_BG_Col
DIM SHARED Help_Col_Normal: Help_Col_Normal = 7
DIM SHARED Help_Col_Link: Help_Col_Link = 9
DIM SHARED Help_Col_Bold: Help_Col_Bold = 15
DIM SHARED Help_Col_Italic: Help_Col_Italic = 3
DIM SHARED Help_Col_Section: Help_Col_Section = 8
DIM SHARED Help_Bold, Help_Italic, Help_Heading
DIM SHARED Help_Underline, Help_ChkBlank
DIM SHARED Help_LockWrap, Help_LockParse
DIM SHARED Help_DList, Help_LIndent$
DIM SHARED Help_Center, Help_CIndent$
REDIM SHARED Help_LineLen(1)
REDIM SHARED Back$(1)
REDIM SHARED Back_Name$(1)
TYPE Help_Back_Type
    sx AS LONG
    sy AS LONG
    cx AS LONG
    cy AS LONG
END TYPE
REDIM SHARED Help_Back(1) AS Help_Back_Type
Back$(1) = "QB64 Help Menu"
Back_Name$(1) = Back2BackName$(Back$(1))
Help_Back(1).sx = 1: Help_Back(1).sy = 1: Help_Back(1).cx = 1: Help_Back(1).cy = 1
DIM SHARED Help_Back_Pos
Help_Back_Pos = 1
DIM SHARED Help_Search_Time AS DOUBLE
DIM SHARED Help_Search_Str AS STRING
DIM SHARED Help_PageLoaded AS STRING
DIM SHARED Help_Recaching, Help_IgnoreCache

'Unicode replacements
TYPE wikiUtf8Replace
    utf8 AS STRING * 4 '= MKI$(reversed hex 2-byte UTF-8 sequence) or MKL$(reversed hex 3/4-byte UTF-8 sequence)
    repl AS STRING * 8 '= replacement string (1-8 chars)
END TYPE
DIM SHARED wpUtfRepl(0 TO 50) AS wikiUtf8Replace
DIM SHARED wpUtfReplCnt: wpUtfReplCnt = -1 'wpUtfRepl index counter (pre-increment, hence
'you don't need "wpUtfReplCnt - 1" when used in loops, just do "0 TO wpUtfReplCnt"
'Note: All UTF-8 values must be reversed in MKI$/MKL$, as it flips them to little endian.
'      In the wiki text they are noted in big endian, hence we need to pre-flip them.
'2-byte sequences
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA9C2): wpUtfRepl(wpUtfReplCnt).repl = "(c)" 'copyright
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA9C3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(130) 'accent (é)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA2C3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(131) 'accent (â)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA0C3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(133) 'accent (à)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA5C3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(134) 'accent (å)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA7C3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(135) 'accent (ç)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HAAC3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(136) 'accent (ê)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HABC3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(137) 'accent (ë)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA8C3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(138) 'accent (è)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HAFC3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(139) 'accent (ï)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HAEC3): wpUtfRepl(wpUtfReplCnt).repl = CHR$(140) 'accent (î)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA2C2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(155) 'cents (ø)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HBDC2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(171) 'fraction (½)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HBCC2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(172) 'fraction (¼)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKI$(&HA0C2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(255) 'non-breaking space
'3-byte sequences
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HA680E2): wpUtfRepl(wpUtfReplCnt).repl = "..." 'ellipsis
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H8C94E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(218) 'single line draw (top/left corner)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9094E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(191) 'single line draw (top/right corner)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9494E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(192) 'single line draw (bottom/left corner)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9894E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(217) 'single line draw (bottom/right corner)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H8094E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(196) 'single line draw (horizontal line)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H8294E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(179) 'single line draw (vertical line)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HB494E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(193) 'single line draw (hori. line + up connection)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HAC94E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(194) 'single line draw (hori. line + down connection)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HA494E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(180) 'single line draw (vert. line + left connection)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9C94E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(195) 'single line draw (vert. line + right connection)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HBC94E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(197) 'single line draw (hori./vert. line cross)
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HB296E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(30) 'triangle up
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HBC96E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(31) 'triangle down
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H8497E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(17) 'triangle left
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&HBA96E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(16) 'triangle right
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9186E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(24) 'arrow up
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9386E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(25) 'arrow down
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9086E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(27) 'arrow left
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H9286E2): wpUtfRepl(wpUtfReplCnt).repl = CHR$(26) 'arrow right
'4-byte sequences
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H80989FF0): wpUtfRepl(wpUtfReplCnt).repl = ":)" 'smily
wpUtfReplCnt = wpUtfReplCnt + 1: wpUtfRepl(wpUtfReplCnt).utf8 = MKL$(&H88989FF0): wpUtfRepl(wpUtfReplCnt).repl = ";)" 'wink