diff --git a/cimp b/cimp new file mode 100755 index 0000000..8128e4c Binary files /dev/null and b/cimp differ diff --git a/cimp.bas b/cimp.bas index d1941d5..449706b 100644 --- a/cimp.bas +++ b/cimp.bas @@ -1,481 +1,505 @@ -declare library "terminkey" - function terminkey%() - sub echooff() - sub echoon() - function termwidth() -end declare - -$console:only - -const KEY_UP = 1001 -const KEY_DOWN = 1002 -const KEY_RIGHT = 1003 -const KEY_LEFT = 1004 - -$if WIN then -Shell "chcp 65001 > nul" -$end if - -redim file(0) as string -if command$ = "" then - print "please specify file to play." - system -end if - -echooff -cursoroff -chdir _startdir$ - -dim volume as single -dim repeat as integer -dim shuffle as integer -dim nooutput as integer -dim timevis as integer -dim nyan as integer -dim marqueeOffset as integer -dim i as integer - -dim musichandle as long -dim oldhandle as long -dim keyin as integer -dim playnext as integer - -dim state as string -dim songname as string -dim progress as string -dim progressbar as string - -dim tw as integer -dim fixedWidth as integer -dim maxTitleWidth as integer -dim visibleTitle as string -dim currentSongWidth as integer -dim paddedTitle as string -dim paddedLength as integer -dim idx as integer -dim addedWidth as integer -dim charIdx as integer -dim nextChar as string -dim marqueeFrame as integer - -volume=1 -repeat=0 -shuffle=0 -nooutput=0 -timevis=1 -nyan=0 -marqueeOffset=0 - -for i=1 to _commandcount - select case command$(i) - case "-v", "--volume" - i=i+1 - volume=val(command$(i)) / 100 - case "-s","--shuffle" - shuffle=-1 - case "-r","--repeat" - if command$(i+1)="1" then - repeat=1 - else - repeat=-1 - end if - case "-n","--nooutput" - nooutput=-1 - case "-N","--nyan" - nyan=-1 - case else - if _fileexists(command$(i)) then - if lcase$(right$(command$(i), 4))=".m3u" then - ParseM3U command$(i),file() - else - file(ubound(file))=command$(i) - redim _preserve file(ubound(file)+1) - end if - end if - end select -next - -redim _preserve file(ubound(file)-1) - -if shuffle=-1 then shufflearray file() -i=0 -musichandle = _sndopen(file(i)) -if musichandle = 0 then - print "Error: could not open file "; file(i) - system -end if -_sndvol musichandle, volume -_sndplay musichandle -state = "playing " -songname = beforelast(".", afterlast("/", file(i))) - -while keyin <> 27 - keyin = terminkey - select case keyin - case KEY_UP - volume = volume + (0.01 + (volume / 10)) - if volume > 1 then volume = 1 - _sndvol musichandle, volume - case KEY_DOWN - volume = volume - (0.01 + (volume / 10)) - if volume < 0 then volume = 0 - _sndvol musichandle, volume - case KEY_RIGHT - if _sndgetpos(musichandle) + 5 < _sndlen(musichandle) then - _sndsetpos musichandle, _sndgetpos(musichandle) + 5 - else - playnext = 1 - end if - case KEY_LEFT - if _sndgetpos(musichandle) - 5 > 0 then - _sndsetpos musichandle, _sndgetpos(musichandle) - 5 - else - playnext = -1 - end if - case asc("q") - keyin = 27 - case asc("z") - if _sndgetpos(musichandle) > 2 then - _sndsetpos musichandle, 0 - else - playnext = -1 - end if - case asc("x") - if _sndplaying(musichandle) then - _sndsetpos musichandle, 0 - else - _sndplay musichandle - end if - case asc("c"), asc(" ") - if _sndplaying(musichandle) then - _sndpause musichandle - state = "paused " - else - _sndplay musichandle - state = "playing " - end if - case asc("v") - _sndstop musichandle - state = "stopped " - case asc("b") - playnext = 1 - case asc("t") - timevis = -timevis - case asc("s") - shufflearray file() - end select - - if _sndgetpos(musichandle) = _sndlen(musichandle) then playnext = 1 - if playnext <> 0 then - oldhandle = musichandle - i = i + playnext - if i > ubound(file) then i = 0 - if i < lbound(file) then i = ubound(file) - musichandle = _sndopen(file(i)) - if musichandle <> 0 then - _sndvol musichandle, volume - _sndplay musichandle - _sndstop oldhandle - _sndclose oldhandle - state = "playing " - songname = beforelast(".", afterlast("/", file(i))) - playnext = 0 - else - musichandle=oldhandle - end if - end if - if timevis = 1 then - progress = " -" + timeleft(musichandle) - else - progress = " " + timeelapsed(musichandle) - end if - if nooutput = 0 then - tw = termwidth - fixedWidth = UWidth(state) + UWidth(progress) - maxTitleWidth = tw - fixedWidth - 2 - currentSongWidth = UWidth(songname) - - if currentSongWidth > maxTitleWidth and maxTitleWidth > 4 then - paddedTitle = songname + " " - paddedLength = ulen(paddedTitle) - visibleTitle = "" - addedWidth = 0 - idx = 0 - while addedWidth < maxTitleWidth - charIdx = ((marqueeOffset + idx) mod paddedLength) + 1 - nextChar = umid(paddedTitle, charIdx, 1) - if addedWidth + UWidth(nextChar) > maxTitleWidth then exit while - visibleTitle = visibleTitle + nextChar - addedWidth = addedWidth + UWidth(nextChar) - idx = idx + 1 - wend - - if addedWidth < maxTitleWidth then - visibleTitle = visibleTitle + space$(maxTitleWidth - addedWidth) - end if - - marqueeFrame = marqueeFrame + 1 - if marqueeFrame mod 4 = 0 then - marqueeOffset = marqueeOffset + 1 - if marqueeOffset >= paddedLength then marqueeOffset = 0 - end if - else - ' Terminal is wide enough, no scrolling needed - visibleTitle = songname - marqueeOffset = 0 - end if - - ' Reset marquee offset if song changes - if playnext <> 0 then marqueeOffset = 0 - - ' Print the text line - if nyan = -1 then - print termcolor(7); state; AnimatedRainbowText(visibleTitle); termcolor(7); progress; clearrest - else - print termcolor(7); state; termcolor(3); visibleTitle; termcolor(7); progress; clearrest - end if - - ' Generate and print progress bar matching the layout width - progressbar = bar(UWidth(state) + UWidth(visibleTitle) + UWidth(progress), (_sndgetpos(musichandle) / _sndlen(musichandle)) * 100, 11, 7) - print progressbar; clearrest; cursorback; - end if - - _limit 30 - if _exit then goto quit -wend - -quit: -_sndclose musichandle -print clearrest -print clearrest; -print cursorback; -cursoron -echoon -system - -sub shufflearray (stringarray() as string) - randomize timer - dim n as long, j as long - for n = ubound(stringarray) to 1 step -1 - j = int(rnd * n) - swap stringarray(n), stringarray(j) - next -end sub - -sub ParseM3U (filename$, array$()) - dim i as long, f as long, count as long - dim basePath$, l$, resolvedPath$ - for i = len(filename$) to 1 step -1 - if mid$(filename$, i, 1) = "/" or mid$(filename$, i, 1) = "\" then - basePath$ = left$(filename$, i) - exit for - end if - next - f = freefile - open filename$ for input as #f - count = 0 - do until eof(f) - line input #f, l$ - l$ = _trim$(l$) - if len(l$) > 0 and left$(l$, 1) <> "#" then - resolvedPath$ = l$ - if not _fileexists(resolvedPath$) then - resolvedPath$ = basePath$ + l$ - end if - if _fileexists(resolvedPath$) then - array$(ubound(array$)) = resolvedPath$ - redim _preserve array$(ubound(array$) + 1) - end if - end if - loop - close #f -end sub - -function timeleft$ (handle&) - dim seconds as integer - seconds = _sndlen(handle&) - _sndgetpos(handle&) - if seconds < 0 then seconds = 0 - timeleft$ = right$("0" + ltrim$(str$(seconds \ 60)), 2) + ":" + right$("0" + ltrim$(str$(seconds mod 60)), 2) -end function - -function timeelapsed$ (handle&) - dim seconds as integer - seconds = _sndgetpos(handle&) - if seconds < 0 then seconds = 0 - timeelapsed$ = right$("0" + ltrim$(str$(seconds \ 60)), 2) + ":" + right$("0" + ltrim$(str$(seconds mod 60)), 2) -end function - -function termcolor$ (colorvalue as _unsigned long) - select case colorvalue - case 0 to 7 - termcolor = chr$(27) + "[0;3" + _trim$(str$(colorvalue)) + "m" - case 8 to 15 - termcolor = chr$(27) + "[1;3" + _trim$(str$(colorvalue - 8)) + "m" - case 16 to 255 - termcolor = chr$(27) + "[38;5;" + _trim$(str$(colorvalue)) + "m" - case is > 255 - termcolor = chr$(27) + "[38;2;" + _trim$(str$(_red32(colorvalue))) + ";" + _trim$(str$(_green32(colorvalue))) + ";" + _trim$(str$(_blue32(colorvalue))) + "m" - end select -end function - -function cursorback$ () - cursorback = chr$(27) + "[F" -end function - -function clearline$ - clearline = chr$(27) + "[2K" -end function - -function clearrest$ - clearrest = chr$(27) + "[K" -end function - -sub cursoroff () - print chr$(27); "[?25l"; -end sub - -sub cursoron () - print chr$(27); "[?25h"; -end sub - -function bar$ (length as integer, percent as integer, color1 as long, color2 as long) - dim done as string - dim notdone as string - dim i as integer - for i = 1 to int((percent / 100) * length) - done = done + "━" - next i - for i = 1 to length - int((percent / 100) * length) - notdone = notdone + "━" - next i - bar$ = termcolor(color1) + done + termcolor(color2) + notdone -end function - -function afterlast$ (delim as string, strng as string) - afterlast = mid$(strng, _instrrev(strng, delim) + 1) -end function - -function beforelast$ (delim as string, strng as string) - beforelast = left$(strng, _instrrev(strng, delim) - 1) -end function - -function AnimatedRainbowText$ (text$) - static offset as double - dim result as string - dim L as long, i as long - dim r as integer, g as integer, b as integer - dim hue as double, f as double - dim sector as integer, v as integer, p as integer, q as integer, t as integer - dim rgbPart$ - - L = ulen(text$) - if L = 0 then exit function - offset = offset + 5.0 - if offset >= 360 then offset = offset - 360 - - for i = 1 to L - hue = MOD_Double(offset + ((i - 1) / L) * 360, 360) - sector = int(hue / 60) - f = (hue / 60) - sector - v = 255: p = 0: q = 255 * (1 - f): t = 255 * f - select case sector - case 0: r = v: g = t: b = p - case 1: r = q: g = v: b = p - case 2: r = p: g = v: b = t - case 3: r = p: g = q: b = v - case 4: r = t: g = p: b = v - case 5: r = v: g = p: b = q - end select - rgbPart$ = _trim$(str$(r)) + ";" + _trim$(str$(g)) + ";" + _trim$(str$(b)) - result = result + chr$(27) + "[38;2;" + rgbPart$ + "m" + umid$(text$, i, 1) - next i - AnimatedRainbowText$ = result + chr$(27) + "[0m" -end function - -function MOD_Double (value as double, m as double) - MOD_Double = value - (m * int(value / m)) -end function - -function ulen% (txt$) - dim count%, i%, b% - count% = 0 - for i% = 1 to len(txt$) - b% = asc(txt$, i%) - if (b% and &H80) = 0 or (b% and &HC0) = &HC0 then - count% = count% + 1 - end if - next - ulen% = count% -end function - -function umid$ (txt$, startChar%, numChars%) - if startChar% < 1 or numChars% <= 0 or txt$ = "" then exit function - - dim byteIdx%, charCount%, startByte%, endByte%, b% - byteIdx% = 1 - charCount% = 0 - - while byteIdx% <= len(txt$) - b% = asc(txt$, byteIdx%) - if (b% and &H80) = 0 or (b% and &HC0) = &HC0 then - charCount% = charCount% + 1 - if charCount% = startChar% then startByte% = byteIdx% - end if - if startByte% > 0 then exit while - byteIdx% = byteIdx% + 1 - wend - - if startByte% = 0 then exit function - - byteIdx% = startByte% - dim charsFound% - charsFound% = 0 - - while byteIdx% <= len(txt$) - b% = asc(txt$, byteIdx%) - if (b% and &H80) = 0 or (b% and &HC0) = &HC0 then - charsFound% = charsFound% + 1 - end if - if charsFound% > numChars% then exit while - byteIdx% = byteIdx% + 1 - wend - - umid$ = mid$(txt$, startByte%, byteIdx% - startByte%) -end function - -function UWidth% (txt$) - dim totalWidth%, i%, char$, cp& - totalWidth% = 0 - for i% = 1 to ulen(txt$) - char$ = umid(txt$, i%, 1) - cp& = GetCodePoint&(char$) - - if cp& > &H1100 then - totalWidth% = totalWidth% + 2 - else - totalWidth% = totalWidth% + 1 - end if - next - UWidth% = totalWidth% -end function - -function GetCodePoint& (utf8Char$) - dim lLength as integer - lLength = len(utf8Char$) - dim b1 as _unsigned _byte, b2 as _unsigned _byte - dim b3 as _unsigned _byte, b4 as _unsigned _byte - - select case lLength - case 1 - GetCodePoint& = asc(utf8Char$, 1) - case 2 - b1 = asc(utf8Char$, 1): b2 = asc(utf8Char$, 2) - GetCodePoint& = (b1 and &H1F) * 64 + (b2 and &H3F) - case 3 - b1 = asc(utf8Char$, 1): b2 = asc(utf8Char$, 2): b3 = asc(utf8Char$, 3) - GetCodePoint& = (b1 and &H0F) * 4096 + (b2 and &H3F) * 64 + (b3 and &H3F) - case 4 - b1 = asc(utf8Char$, 1): b2 = asc(utf8Char$, 2): b3 = asc(utf8Char$, 3): b4 = asc(utf8Char$, 4) - GetCodePoint& = (b1 and &H07) * 262144 + (b2 and &H3F) * 4096 + (b3 and &H3F) * 64 + (b4 and &H3F) - end select -end function +'declare library "terminkey" +'' function terminkey%() +'' sub echooff() +'' sub echoon() +'' function termwidth() +'end declare + +$console:only + +const key_up=1001 +const key_down=1002 +const key_right=1003 +const key_left=1004 + +$if win then +shell"chcp 65001 > nul" +$end if + +redim file(0) as string +if command$=""then + print"please specify file to play." + system +end if + +echooff +cursoroff +chdir _startdir$ + +dim volume as single +dim repeat as integer +dim shuffle as integer +dim nooutput as integer +dim timevis as integer +dim nyan as integer +dim marqueeoffset as integer +dim i as integer + +dim musichandle as long +dim oldhandle as long +dim keyin as integer +dim playnext as integer + +dim state as string +dim songname as string +dim progress as string +dim progressbar as string + +dim tw as integer +dim fixedwidth as integer +dim maxtitlewidth as integer +dim visibletitle as string +dim currentsongwidth as integer +dim paddedtitle as string +dim paddedlength as integer +dim idx as integer +dim addedwidth as integer +dim charidx as integer +dim nextchar as string +dim marqueeframe as integer + +volume=1 +repeat=0 +shuffle=0 +nooutput=0 +timevis=1 +nyan=0 +marqueeoffset=0 + +for i=1 to _commandcount + select case command$(i) + case "-v","--volume" + i=i+1 + volume=val(command$(i))/100 + case "-s","--shuffle" + shuffle=-1 + case "-r","--repeat" + if command$(i+1)="1"then + repeat=1 + else + repeat=-1 + end if + case "-n","--nooutput" + nooutput=-1 + case "-N","--nyan" + nyan=-1 + case else + if _fileexists(command$(i)) then + if lcase$(right$(command$(i),4))=".m3u"then + parsem3u command$(i),file() + else + file(ubound(file))=command$(i) + redim _preserve file(ubound(file)+1) + end if + end if + end select +next + +redim _preserve file(ubound(file)-1) + +if shuffle=-1 then shufflearray file() +i=0 +musichandle=_sndopen(file(i)) +if musichandle=0 then + print"Error: could not open file "; file(i) + system +end if +_sndvol musichandle,volume +_sndplay musichandle +state="playing " +songname=beforelast(".",afterlast("/",file(i))) + +while keyin<>27 + keyin=terminkey + select case keyin + case key_up + volume=volume+(0.01+(volume/10)) + if volume>1 then volume=1 + _sndvol musichandle,volume + case key_down + volume=volume-(0.01+(volume/10)) + if volume<0 then volume=0 + _sndvol musichandle,volume + case key_right + if _sndgetpos(musichandle)+5<_sndlen(musichandle) then + _sndsetpos musichandle,_sndgetpos(musichandle)+5 + else + playnext=1 + end if + case key_left + if _sndgetpos(musichandle)-5>0 then + _sndsetpos musichandle,_sndgetpos(musichandle)-5 + else + playnext=-1 + end if + case asc("q") + keyin=27 + case asc("z") + if _sndgetpos(musichandle)>2 then + _sndsetpos musichandle,0 + else + playnext=-1 + end if + case asc("x") + if _sndplaying(musichandle) then + _sndsetpos musichandle,0 + else + _sndplay musichandle + end if + case asc("c"),asc(" ") + if _sndplaying(musichandle) then + _sndpause musichandle + state="paused " + else + _sndplay musichandle + state="playing " + end if + case asc("v") + _sndstop musichandle + state="stopped " + case asc("b") + playnext=1 + case asc("t") + timevis=-timevis + case asc("s") + shufflearray file() + end select + + if _sndgetpos(musichandle)=_sndlen(musichandle) then playnext=1 + if playnext<>0 then + oldhandle=musichandle + + ' Check repeat settings before advancing the playlist index + if repeat=1 and playnext=1 then + ' Repeat current song: do not change index i + playnext=0 + else + ' Advance or go back in playlist + i=i+playnext + + ' Check boundary conditions based on repeat settings + if i>ubound(file) then + if repeat=-1 then + i=0 ' Loop back to start if repeat playlist is enabled + else + goto quit ' Exit program if we reached the end of the files + end if + elseif i0 then + _sndvol musichandle,volume + _sndplay musichandle + _sndstop oldhandle + _sndclose oldhandle + state="playing " + songname=beforelast(".",afterlast("/",file(i))) + playnext=0 + else + musichandle=oldhandle + end if + end if + + if timevis=1 then + progress=" -"+timeleft(musichandle) + else + progress=" "+timeelapsed(musichandle) + end if + if nooutput=0 then + tw=termwidth + fixedwidth=uwidth(state)+uwidth(progress) + maxtitlewidth=tw-fixedwidth-2 + currentsongwidth=uwidth(songname) + + if currentsongwidth>maxtitlewidth and maxtitlewidth>4 then + paddedtitle=songname+" " + paddedlength=ulen(paddedtitle) + visibletitle="" + addedwidth=0 + idx=0 + while addedwidthmaxtitlewidth then exit while + visibletitle=visibletitle+nextchar + addedwidth=addedwidth+uwidth(nextchar) + idx=idx+1 + wend + + if addedwidth=paddedlength then marqueeoffset=0 + end if + else + ' Terminal is wide enough, no scrolling needed + visibletitle=songname + marqueeoffset=0 + end if + + ' Reset marquee offset if song changes + if playnext<>0 then marqueeoffset=0 + + ' Print the text line + if nyan=-1 then + print termcolor(7); state; animatedrainbowtext(visibletitle); termcolor(7); progress; clearrest + else + print termcolor(7); state; termcolor(3); visibletitle; termcolor(7); progress; clearrest + end if + + ' Generate and print progress bar matching the layout width + progressbar=bar(uwidth(state)+uwidth(visibletitle)+uwidth(progress),(_sndgetpos(musichandle)/_sndlen(musichandle))*100,11,7) + print progressbar; clearrest; cursorback; + end if + + _limit 30 + if _exit then goto quit +wend + +quit: +_sndclose musichandle +print clearrest +print clearrest; +print cursorback; +cursoron +echoon +system + +sub shufflearray (stringarray() as string) + randomize timer + dim n as long,j as long + for n=ubound(stringarray) to 1 step -1 + j=int(rnd*n) + swap stringarray(n),stringarray(j) + next +end sub + +sub parsem3u (filename$,array$()) + dim i as long,f as long,count as long + dim basepath$,l$,resolvedpath$ + for i=len(filename$) to 1 step -1 + if mid$(filename$,i,1)="/"or mid$(filename$,i,1)="\"then + basepath$=left$(filename$,i) + exit for + end if + next + f=freefile + open filename$ for input as #f + count=0 + do until eof(f) + line input #f,l$ + l$=_trim$(l$) + if len(l$)>0 and left$(l$,1)<>"#"then + resolvedpath$=l$ + if not _fileexists(resolvedpath$) then + resolvedpath$=basepath$+l$ + end if + if _fileexists(resolvedpath$) then + array$(ubound(array$))=resolvedpath$ + redim _preserve array$(ubound(array$)+1) + end if + end if + loop + close #f +end sub + +function timeleft$ (handle&) + dim seconds as integer + seconds=_sndlen(handle&)-_sndgetpos(handle&) + if seconds<0 then seconds=0 + timeleft$=right$("0"+ltrim$(str$(seconds \ 60)),2)+":"+right$("0"+ltrim$(str$(seconds mod 60)),2) +end function + +function timeelapsed$ (handle&) + dim seconds as integer + seconds=_sndgetpos(handle&) + if seconds<0 then seconds=0 + timeelapsed$=right$("0"+ltrim$(str$(seconds \ 60)),2)+":"+right$("0"+ltrim$(str$(seconds mod 60)),2) +end function + +function termcolor$ (colorvalue as _unsigned long) + select case colorvalue + case 0 to 7 + termcolor=chr$(27)+"[0;3"+_trim$(str$(colorvalue))+"m" + case 8 to 15 + termcolor=chr$(27)+"[1;3"+_trim$(str$(colorvalue-8))+"m" + case 16 to 255 + termcolor=chr$(27)+"[38;5;"+_trim$(str$(colorvalue))+"m" + case is>255 + termcolor=chr$(27)+"[38;2;"+_trim$(str$(_red32(colorvalue)))+";"+_trim$(str$(_green32(colorvalue)))+";"+_trim$(str$(_blue32(colorvalue)))+"m" + end select +end function + +function cursorback$ () + cursorback=chr$(27)+"[F" +end function + +function clearline$ + clearline=chr$(27)+"[2K" +end function + +function clearrest$ + clearrest=chr$(27)+"[K" +end function + +sub cursoroff () + print chr$(27);"[?25l"; +end sub + +sub cursoron () + print chr$(27);"[?25h"; +end sub + +function bar$ (length as integer,percent as integer,color1 as long,color2 as long) + dim done as string + dim notdone as string + dim i as integer + for i=1 to int((percent/100)*length) + done=done+"━" + next i + for i=1 to length-int((percent/100)*length) + notdone=notdone+"━" + next i + bar$=termcolor(color1)+done+termcolor(color2)+notdone +end function + +function afterlast$ (delim as string,strng as string) + afterlast=mid$(strng,_instrrev(strng,delim)+1) +end function + +function beforelast$ (delim as string,strng as string) + beforelast=left$(strng,_instrrev(strng,delim)-1) +end function + +function animatedrainbowtext$ (text$) + static offset as double + dim result as string + dim l as long,i as long + dim r as integer,g as integer,b as integer + dim hue as double,f as double + dim sector as integer,v as integer,p as integer,q as integer,t as integer + dim rgbpart$ + + l=ulen(text$) + if l=0 then exit function + offset=offset+5.0 + if offset>=360 then offset=offset-360 + + for i=1 to l + hue=mod_double(offset+((i-1)/l)*360,360) + sector=int(hue/60) + f=(hue/60)-sector + v=255:p=0:q=255*(1-f):t=255*f + select case sector + case 0:r=v:g=t:b=p + case 1:r=q:g=v:b=p + case 2:r=p:g=v:b=t + case 3:r=p:g=q:b=v + case 4:r=t:g=p:b=v + case 5:r=v:g=p:b=q + end select + rgbpart$=_trim$(str$(r))+";"+_trim$(str$(g))+";"+_trim$(str$(b)) + result=result+chr$(27)+"[38;2;"+rgbpart$+"m"+umid$(text$,i,1) + next i + animatedrainbowtext$=result+chr$(27)+"[0m" +end function + +function mod_double (value as double,m as double) + mod_double=value-(m*int(value/m)) +end function + +function ulen% (txt$) + dim count%,i%,b% + count%=0 + for i%=1 to len(txt$) + b%=asc(txt$,i%) + if (b% and &h80)=0 or (b% and &hc0)=&hc0 then + count%=count%+1 + end if + next + ulen%=count% +end function + +function umid$ (txt$,startchar%,numchars%) + if startchar%<1 or numchars%<=0 or txt$=""then exit function + + dim byteidx%,charcount%,startbyte%,endbyte%,b% + byteidx%=1 + charcount%=0 + + while byteidx%<=len(txt$) + b%=asc(txt$,byteidx%) + if (b% and &h80)=0 or (b% and &hc0)=&hc0 then + charcount%=charcount%+1 + if charcount%=startchar% then startbyte%=byteidx% + end if + if startbyte%>0 then exit while + byteidx%=byteidx%+1 + wend + + if startbyte%=0 then exit function + + byteidx%=startbyte% + dim charsfound% + charsfound%=0 + + while byteidx%<=len(txt$) + b%=asc(txt$,byteidx%) + if (b% and &h80)=0 or (b% and &hc0)=&hc0 then + charsfound%=charsfound%+1 + end if + if charsfound%>numchars% then exit while + byteidx%=byteidx%+1 + wend + + umid$=mid$(txt$,startbyte%,byteidx%-startbyte%) +end function + +function uwidth% (txt$) + dim totalwidth%,i%,char$,cp& + totalwidth%=0 + for i%=1 to ulen(txt$) + char$=umid(txt$,i%,1) + cp&=getcodepoint&(char$) + + if cp&>&h1100 then + totalwidth%=totalwidth%+2 + else + totalwidth%=totalwidth%+1 + end if + next + uwidth%=totalwidth% +end function + +function getcodepoint& (utf8char$) + dim llength as integer + llength=len(utf8char$) + dim b1 as _unsigned _byte,b2 as _unsigned _byte + dim b3 as _unsigned _byte,b4 as _unsigned _byte + + select case llength + case 1 + getcodepoint&=asc(utf8char$,1) + case 2 + b1=asc(utf8char$,1):b2=asc(utf8char$,2) + getcodepoint&=(b1 and &h1f)*64+(b2 and &h3f) + case 3 + b1=asc(utf8char$,1):b2=asc(utf8char$,2):b3=asc(utf8char$,3) + getcodepoint&=(b1 and &h0f)*4096+(b2 and &h3f)*64+(b3 and &h3f) + case 4 + b1=asc(utf8char$,1):b2=asc(utf8char$,2):b3=asc(utf8char$,3):b4=asc(utf8char$,4) + getcodepoint&=(b1 and &h07)*262144+(b2 and &h3f)*4096+(b3 and &h3f)*64+(b4 and &h3f) + end select +end function