infinite loop with break condition

[aGerman]

this take 3 second on my pc

~10s for me
It's just a slow little netbook in my case.

the long code trasformed in while..do on my machine take 4 second

~15 s.
It takes ~11s if all empty lines are removed. Even empty lines count whenever you have to jump to a label.

[einstein1969]

And for not making it too easy, the distance between the label and GOTO seems to matter as well.
Again 5 lines but the SET /A in a separate line makes it take ~8 seconds.

Code: Select all

@echo off &setlocal EnableDelayedExpansion &set "n=0" &echo %time%
:loop
set /a "n+=1"
if !n! leq 10000 goto loop
echo %time% %n% &pause

Another example of mine:
viewtopic.php?p=55148#p55148
In this post you find a readable code. The "unreadable" but significantly shorter code is ~25% faster:
viewtopic.php?p=55139#p55139
The reason is the necessity of GOTO statements to perform loops, and CALL statements to perform recursion in the code.

i did a quick test and i did not find what you say

do you have a sample txt to test? just in case let's move on to that thread.

[einstein1969]

this take 3 second on my pc

~10s for me
It's just a slow little netbook in my case.

the long code trasformed in while..do on my machine take 4 second

~15 s.
It takes ~11s if all empty lines are removed. Even empty lines count whenever you have to jump to a label.

yes, but if you optimize it well, the goto problem is small

Code: Select all

@echo off 
setlocal EnableDelayedExpansion

set "Acc=(for /L %%. in (1,1,500) do ("
set "AccGoto=) ) & goto"


set "n=0" 
echo %time%

set /a "n+=1"

:loop
%Acc%
if !n! leq 10000 (

	set /a "n+=1" 

) else goto :exit

%AccGoto% :loop

:exit

echo %time% %n% 
pause

[aGerman]

do you have a sample txt to test? just in case let's move on to that thread.

Sure I have.

test.zip

(6.39 KiB) Downloaded 724 times

Result:

Code: Select all

16:23:32,14
short code
16:23:36,15
long code
16:23:43,84
Drücken Sie eine beliebige Taste . . .

but if you optimize it well

Haha, this is a comparison of apples and oranges now. Of course you can't beat the performance of FOR /L. But still the few GOTO jumps you perform are dependent on the number of lines in your code And yes, in this example it's only a few lines. However in real world it might be some thousands of lines. This discussion is exactly the same we had at the beginning, right?

[einstein1969]

I understand what you mean.

But I wanted to point out that the goto's that exist could largely be avoided and ultimately their influence is negligible.

I put the procedure proc_line inline, in the code there is only one call so better not to use call.

Code: Select all

        if defined ln (
		rem call :proc_line

for /f "tokens=1* delims=%tab%" %%I in ("X!ln!") do setlocal EnableExtensions DisableDelayedExpansion &if "%%J" neq "" (
  endlocal
  set "str=X!ln!"
  set "len=0"
  for /l %%M in (12 -1 0) do (
    set /a "len|=1<<%%M"
    for %%L in (!len!) do if "!str:~%%L,1!"=="" set /a "len&=~1<<%%M"
  )
  set /a "len-=1"
  call :tab_recur 0
) else endlocal
for %%I in ("\=\\" "(=\(" ")=\)") do set "ln=!ln:%%~I!"

	)

in the same way the recursive procedure "tab_recur" can be transformed into iterative with the use of for. Now I try.

[einstein1969]

I transformed the recursive procedure into an iterative procedure (in the "while .. do" format) and applied the FOR code to include it in the loop.

This is the code, from 16 seconds (I have replicated the text you sent me 10 times for a total of 22 pages) now it takes only 6 seconds.

However I have seen that at some point the procedure that performs the reading and writing at the same time slows down considerably. You could try it by changing the transformation approach and maybe it would be even faster.

Code: Select all

@echo off&setlocal EnableExtensions DisableDelayedExpansion
if "%~1"=="/?" call :help "Convert Text to PDF" &exit /b 0
set "Letter=pageHeight=792, pageWidth=612"
set "A4=pageHeight=842, pageWidth=595"
set "A3=pageHeight=1190, pageWidth=842"

set "inFile=%~1"
if not exist "%inFile%" call :help "Error: inFile does not exist.">&2 &exit /b 1
if exist "%inFile%\" call :help "Error: inFile does not exist.">&2 &exit /b 1
for %%i in ("%inFile%") do if %%~zi equ 0 call :help "Error: inFile is empty.">&2 &exit /b 1

set "outFile=%~2"
if not defined outFile call :help "Error: outFile not specified.">&2 &exit /b 1
for %%i in ("%outFile%") do if /i "%%~xi" neq ".pdf" set "outfile=%outfile%.pdf"

set /a "%A4%, tabWidth=8, fontSize=10, landscape=0, objects=5, pages=0"
:opt_loop
if "%~3"=="" goto end_opt
set "opt=%~3"
if /i "%opt%"=="/A4" (
  set /a "%A4%"
) else if /i "%opt%"=="/A3" (
  set /a "%A3%"
) else if /i "%opt%"=="/Letter" (
  set /a "%Letter%"
) else if /i "%opt:~0,3%"=="/T:" (
  set /a "tabWidth=%opt:~3%"
) else if /i "%opt:~0,3%"=="/F:" (
  set /a "fontSize=%opt:~3%"
) else if /i "%opt%"=="/L" (
  set /a "landscape=1"
) else call :help "Error: Invalid option.">&2 &exit /b 1
shift /3
goto opt_loop
:end_opt

2>&1 (>"%outFile%" type nul)|>nul find /v ""&&(call :help "Error: Unabe to write to outFile.">&2 &exit /b 1)

set "tab=	"
set "spcs=                                                                                                    "
if not exist "%__APPDIR__%wbem\WMIC.exe" for /f "tokens=1,2*" %%a in ('reg query "HKCU\Control Panel\International"^|findstr /i "\<[is]Date\>"') do set "%%a=%%c"
if not exist "%__APPDIR__%wbem\WMIC.exe" (
  for /f "tokens=1-6 delims=:.,%sDate%" %%a in ("%date:* =%,%time: =0%") do (
    setlocal EnableExtensions EnableDelayedExpansion
    if !iDate!==0 (set mm=0%%a&set dd=0%%b&set yy=%%c) else if !iDate!==1 (set dd=0%%a&set mm=0%%b&set yy=%%c) else (set yy=%%a&set mm=0%%b&set dd=0%%c)
    (set h=%%d&set m=%%e&set s=%%f)
  )
  if 1!yy! LSS 200 if 1!yy! LSS 170 (set yy=20!yy!) else (set yy=19!yy!)
  set "LocalDateTime=!yy!!mm:~-2!!dd:~-2!!h!!m!!s!"
) else for /f "delims=." %%a in ('WMIC OS Get LocalDateTime /value') do for /f %%b in ("%%a") do (
  set "%%b"
  setlocal EnableExtensions EnableDelayedExpansion
)

if !tabWidth! lss 2 set "tabWidth=2"
if !fontSize! lss 1 set "fontSize=1"
if !landscape! neq 0 set /a "_tmp=pageWidth, pageWidth=pageHeight, pageHeight=_tmp"
for /f %%i in ('type "!inFile!"^|find /c /v ""') do set /a "lineHight=(fontSize*12)/10, linesInPage=(pageHeight-72)/lineHight, pageCnt=%%i/linesInPage, linesInLast=%%i %% linesInPage, hMinus40=pageHeight-40"
if !linesInPage! lss 1 set "linesInPage=1"
if !linesInLast! equ 0 (set /a "linesInLast=linesInPage") else set /a "pageCnt+=1"

>"!outFile!" echo(%%PDF-1.1

for %%i in ("!outFile!") do set "objPos[1]=%%~zi"
>>"!outFile!" (
  echo(1 0 obj
  echo(^<^<
  echo(/CreationDate ^(D:!LocalDateTime!^)
  echo(/Producer ^(text2pdf.bat^)
  echo(/Title ^(text2pdf^)
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "objPos[2]=%%~zi"
>>"!outFile!" (
  echo(2 0 obj
  echo(^<^<
  echo(/Type /Catalog
  echo(/Pages 3 0 R
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "objPos[4]=%%~zi"
>>"!outFile!" (
  echo(4 0 obj
  echo(^<^<
  echo(/Type /Font
  echo(/Subtype /Type1
  echo(/Name /F1
  echo(/BaseFont /Courier
  echo(/Encoding /WinAnsiEncoding
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "objPos[5]=%%~zi"
>>"!outFile!" (
  echo(5 0 obj
  echo(^<^<
  echo(/Font ^<^< /F1 4 0 R ^>^>
  echo(/ProcSet [ /PDF /Text ]
  echo(^>^>
  echo(endobj
)

<!inFile! (
  for /l %%h in (1 1 !pageCnt!) do (
    set /a "objects+=1, nextObject=objects+1, pages+=1"
    set "pageObj[!pages!]=!objects!"
    for %%i in ("!outFile!") do set "objPos[!objects!]=%%~zi"
    >>"!outFile!" (
      echo(!objects! 0 obj
      echo(^<^<
      echo(/Type /Page
      echo(/Parent 3 0 R
      echo(/Resources 5 0 R
      echo(/Contents !nextObject! 0 R
      echo(^>^>
      echo(endobj
    )

    set /a "objects+=1, nextObject+=1"
    for %%i in ("!outFile!") do set "objPos[!objects!]=%%~zi"
    >>"!outFile!" (
      echo(!objects! 0 obj
      echo(^<^<
      echo(/Length !nextObject! 0 R
      echo(^>^>
      echo(stream
    )

    for %%i in ("!outFile!") do set "streamPos=%%~zi"
    >>"!outFile!" (
      echo(BT
      echo(/F1 !fontSize! Tf
      echo(1 0 0 1 50 !hMinus40! Tm
      echo(!lineHight! TL
    )

    if %%h equ !pageCnt! (set "n=!linesInLast!") else set "n=!linesInPage!"
    >>"!outFile!" (
      for /l %%j in (1 1 !n!) do (
        set "ln="&set /p "ln="
        if defined ln (
		rem call :proc_line

for /f "tokens=1* delims=%tab%" %%I in ("X!ln!") do setlocal EnableExtensions DisableDelayedExpansion &if "%%J" neq "" (
  endlocal
  set "str=X!ln!"
  set "len=0"
  for /l %%M in (12 -1 0) do (
    set /a "len|=1<<%%M"
    for %%L in (!len!) do if "!str:~%%L,1!"=="" set /a "len&=~1<<%%M"
  )
  set /a "len-=1"
  call :tab_iter
) else endlocal
for %%I in ("\=\\" "(=\(" ")=\)") do set "ln=!ln:%%~I!"

	)
        echo(^(!ln!^)'
      )
      echo(^(^)'
      echo(ET
    )

    for %%i in ("!outFile!") do set /a "streamLen=%%~zi-streamPos"
    >>"!outFile!" (
      echo(endstream
      echo(endobj
    )

    set /a "objects+=1, nextObject+=1"
    for %%i in ("!outFile!") do set "objPos[!objects!]=%%~zi"
    >>"!outFile!" (
      echo(!objects! 0 obj
      echo(!streamLen!
      echo(endobj
    )
  )
)

for %%i in ("!outFile!") do set "objPos[3]=%%~zi"
>>"!outFile!" (
  echo(3 0 obj
  echo(^<^<
  echo(/Type /Pages
  echo(/Count !pages!
  echo(/MediaBox [ 0 0 !pageWidth! !pageHeight! ]
  <nul set /p "=/Kids [ "
  for /l %%i in (1 1 !pages!) do <nul set /p "=!pageObj[%%i]! 0 R "
  echo(]
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "xrefPos=%%~zi"
>>"!outFile!" (
  echo(xref
  echo(0 !nextObject!
  echo(0000000000 65535 f
  for /l %%i in (1 1 !objects!) do (
    set "pos=0000000000!objPos[%%i]!"
    echo(!pos:~-10! 00000 n
  )

  echo(trailer
  echo(^<^<
  echo(/Size !nextObject!
  echo(/Root 2 0 R
  echo(/Info 1 0 R
  echo(^>^>

  echo(startxref
  echo(!xrefPos!
  echo(%%%%EOF
)
exit /b 0

:tab_iter
  set i=0
:loop
For /L %%. in (1,1,250) do (
  if !i! lss !len! (
    set /a "nxt=!i!+1"
    for %%I in (!i!) do (
	if "!ln:~%%I,1!"=="%tab%" (
      		set /a "d=0-(%%I %% tabWidth)+tabWidth, e=nxt, nxt+=d-1, len+=d-1"
      		for /f "tokens=1,2" %%d in ("!d! !e!") do set "ln=!ln:~0,%%I!!spcs:~0,%%d!!ln:~%%e!"
        )
    )
    set /a i=nxt
  ) else exit/b
)
goto :loop
exit /b

:help
echo(%~1
echo(
echo(Usage:
echo(txt2pdf.bat inFile outFile [/A4^|/A3^|/Letter] [/T:n] [/F:n] [/L]
echo(
echo(  inFile   Path of the source text file.
echo(  outFile  Path of the destination PDF file.
echo(
echo(  /A4      Page size A4.          (default)
echo(  /A3      Page size A3.
echo(  /Letter  Page size Letter.
echo(
echo(  /T:n     Tab width of n spaces. (default  8)
echo(  /F:n     Font size of n points. (default 10)
echo(  /L       Orientation Landscape. (default Portrait)
echo(
exit /b

[aGerman]

Yeah, that's significantly faster!

Code: Select all

11:48:21,98
short code
11:48:26,01
long code
11:48:33,41
einstein code
11:48:35,04
Drücken Sie eine beliebige Taste . . .

In the first place I had some difficulties to read the code in my editor. Then I recognized the mix of spaces and tabs for indentations is the culprit Don't worry, I've been able to sort it all out.

However I have seen that at some point the procedure that performs the reading and writing at the same time slows down considerably.

Huh, that's unexpected. Reading a file using SET /P from a redirection has been always both fast and safe (in terms of special characters in lines).

[einstein1969]

I found that the multiple outputs within the loop including the "set /P" and file size readings were the cause of the slowdown (non-linear).

I calculated the positions (making pads of the strings) and moved to a single output and removed the query of the file size and the performance doubled.

However, there are now many calls to the pad function. Macros could be created. In addition, the function that calculates the length of the string could also be improved.

Here I have a very fast version which is not very long. I recently tested it, it should work.

inline version, size returns in the "#" variable:

Code: Select all

    
    set "$=A!Str!" & set "#="
    for %%P in (4096 2048 1024 512 256 128 64 32 16) do if "!$:~%%P!" NEQ "" set /a "#+=%%P" & set "$=!$:~%%P!"
    set "$=!$:~1!FEDCBA9876543210" & set /a #+=0x!$:~15,1!

macro version on a single line, does not use setlocal to return the value but uses a fixed one:

Code: Select all

rem macro $strlen, return $len
set "$strlen=for %%# in (1 2) do if %%#==2 ( for /f %%1 in ("^^!args^^!") do (set "$=A^^!%%1^^!" & set "$len=" &  ( for %%] in (4096 2048 1024 512 256 128 64 32 16) do if "^^!$:~%%]^^!" NEQ "" set /a "$len+=%%]" & set "$=^^!$:~%%]^^!" ) & set "$=^^!$:~1^^!FEDCBA9876543210" & set /a $len+=0x^!$:~15,1^! ) ) else set args="

set "str=foo bar"
%$strlen% Str
echo length=!$len!

the new code

Code: Select all

@echo off&setlocal EnableExtensions DisableDelayedExpansion
if "%~1"=="/?" call :help "Convert Text to PDF" &exit /b 0
set "Letter=pageHeight=792, pageWidth=612"
set "A4=pageHeight=842, pageWidth=595"
set "A3=pageHeight=1190, pageWidth=842"

set "inFile=%~1"
if not exist "%inFile%" call :help "Error: inFile does not exist.">&2 &exit /b 1
if exist "%inFile%\" call :help "Error: inFile does not exist.">&2 &exit /b 1
for %%i in ("%inFile%") do if %%~zi equ 0 call :help "Error: inFile is empty.">&2 &exit /b 1

set "outFile=%~2"
if not defined outFile call :help "Error: outFile not specified.">&2 &exit /b 1
for %%i in ("%outFile%") do if /i "%%~xi" neq ".pdf" set "outfile=%outfile%.pdf"

set /a "%A4%, tabWidth=8, fontSize=10, landscape=0, objects=5, pages=0"
:opt_loop
if "%~3"=="" goto end_opt
set "opt=%~3"
if /i "%opt%"=="/A4" (
  set /a "%A4%"
) else if /i "%opt%"=="/A3" (
  set /a "%A3%"
) else if /i "%opt%"=="/Letter" (
  set /a "%Letter%"
) else if /i "%opt:~0,3%"=="/T:" (
  set /a "tabWidth=%opt:~3%"
) else if /i "%opt:~0,3%"=="/F:" (
  set /a "fontSize=%opt:~3%"
) else if /i "%opt%"=="/L" (
  set /a "landscape=1"
) else call :help "Error: Invalid option.">&2 &exit /b 1
shift /3
goto opt_loop
:end_opt

2>&1 (>"%outFile%" type nul)|>nul find /v ""&&(call :help "Error: Unabe to write to outFile.">&2 &exit /b 1)

set "tab=	"
set "spcs=                                                                                                    "
if not exist "%__APPDIR__%wbem\WMIC.exe" for /f "tokens=1,2*" %%a in ('reg query "HKCU\Control Panel\International"^|findstr /i "\<[is]Date\>"') do set "%%a=%%c"
if not exist "%__APPDIR__%wbem\WMIC.exe" (
  for /f "tokens=1-6 delims=:.,%sDate%" %%a in ("%date:* =%,%time: =0%") do (
    setlocal EnableExtensions EnableDelayedExpansion
    if !iDate!==0 (set mm=0%%a&set dd=0%%b&set yy=%%c) else if !iDate!==1 (set dd=0%%a&set mm=0%%b&set yy=%%c) else (set yy=%%a&set mm=0%%b&set dd=0%%c)
    (set h=%%d&set m=%%e&set s=%%f)
  )
  if 1!yy! LSS 200 if 1!yy! LSS 170 (set yy=20!yy!) else (set yy=19!yy!)
  set "LocalDateTime=!yy!!mm:~-2!!dd:~-2!!h!!m!!s!"
) else for /f "delims=." %%a in ('WMIC OS Get LocalDateTime /value') do for /f %%b in ("%%a") do (
  set "%%b"
  setlocal EnableExtensions EnableDelayedExpansion
)

if !tabWidth! lss 2 set "tabWidth=2"
if !fontSize! lss 1 set "fontSize=1"
if !landscape! neq 0 set /a "_tmp=pageWidth, pageWidth=pageHeight, pageHeight=_tmp"
for /f %%i in ('type "!inFile!"^|find /c /v ""') do set /a "lineHight=(fontSize*12)/10, linesInPage=(pageHeight-72)/lineHight, pageCnt=%%i/linesInPage, linesInLast=%%i %% linesInPage, hMinus40=pageHeight-40"
if !linesInPage! lss 1 set "linesInPage=1"
if !linesInLast! equ 0 (set /a "linesInLast=linesInPage") else set /a "pageCnt+=1"

>"!outFile!" echo(%%PDF-1.1

for %%i in ("!outFile!") do set "objPos[1]=%%~zi"
>>"!outFile!" (
  echo(1 0 obj
  echo(^<^<
  echo(/CreationDate ^(D:!LocalDateTime!^)
  echo(/Producer ^(text2pdf.bat^)
  echo(/Title ^(text2pdf^)
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "objPos[2]=%%~zi"
>>"!outFile!" (
  echo(2 0 obj
  echo(^<^<
  echo(/Type /Catalog
  echo(/Pages 3 0 R
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "objPos[4]=%%~zi"
>>"!outFile!" (
  echo(4 0 obj
  echo(^<^<
  echo(/Type /Font
  echo(/Subtype /Type1
  echo(/Name /F1
  echo(/BaseFont /Courier
  echo(/Encoding /WinAnsiEncoding
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "objPos[5]=%%~zi"
>>"!outFile!" (
  echo(5 0 obj
  echo(^<^<
  echo(/Font ^<^< /F1 4 0 R ^>^>
  echo(/ProcSet [ /PDF /Text ]
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "fsize=%%~zi"

rem 43sec, 18sec, 16sec

rem for %%i in ("!outFile!") do echo 1 fsize:!fsize! real:%%~zi >Con:

<!inFile! >>"!outFile!" (
  for /l %%h in (1 1 !pageCnt!) do (
    set /a "objects+=1, nextObject=objects+1, pages+=1"
    set "pageObj[!pages!]=!objects!"

    set /a "objPos[!objects!]=fsize"

    call :pad4 objects objectsP
    call :pad4 nextObject nextObjectP

      echo(!objectsP! 0 obj
      echo(^<^<
      echo(/Type /Page
      echo(/Parent 3 0 R
      echo(/Resources 5 0 R
      echo(/Contents !nextObjectP! 0 R
      echo(^>^>
      echo(endobj

    set /a "fsize+=94"

    set /a "objects+=1, nextObject+=1"
    set /a "objPos[!objects!]=fsize"

    call :pad4 objects objectsP
    call :pad4 nextObject nextObjectP

      echo(!objectsP! 0 obj
      echo(^<^<
      echo(/Length !nextObjectP! 0 R
      echo(^>^>
      echo(stream

    set /a "fsize+=46"
    set /a "streamPos=fsize"

    call :pad4 fontSize fontSizeP
    call :pad4 hMinus40 hMinus40P
    call :pad4 lineHight lineHightP

      echo(BT
      echo(/F1 !fontSizeP! Tf
      echo(1 0 0 1 50 !hMinus40P! Tm
      echo(!lineHightP! TL

    set /a "fsize+=46"
    if %%h equ !pageCnt! (set "n=!linesInLast!") else set "n=!linesInPage!"

      for /l %%j in (1 1 !n!) do (
        set "ln="&set /p "ln="
        if defined ln (
		rem call :proc_line
		for /f "tokens=1* delims=%tab%" %%I in ("X!ln!") do setlocal EnableExtensions DisableDelayedExpansion &if "%%J" neq "" (
  		endlocal
  		set "str=X!ln!"
  		set "len=0"
  		for /l %%M in (12 -1 0) do (
    			set /a "len|=1<<%%M"
    			for %%L in (!len!) do if "!str:~%%L,1!"=="" set /a "len&=~1<<%%M"
  		)
  		set /a "len-=1"
  		call :tab_iter
		) else endlocal
		for %%I in ("\=\\" "(=\(" ")=\)") do set "ln=!ln:%%~I!"
	)

  		set "str=X!ln!"
  		set "len=0"
  		for /l %%M in (12 -1 0) do (
    			set /a "len|=1<<%%M"
    			for %%L in (!len!) do if "!str:~%%L,1!"=="" set /a "len&=~1<<%%M"
  		)
  		set /a "len-=1"

        echo(^(!ln!^)'
	set /a "fsize+=len+1+3+2"
      ) 

      echo(^(^)'
      echo(ET
      set /a "fsize+=3+2+2+2"

    set /a "streamLen=fsize-streamPos"

      echo(endstream
      echo(endobj

    set /a "fsize+=19"

    set /a "objects+=1, nextObject+=1"
    set /a "objPos[!objects!]=fsize" 

    call :pad4 objects objectsP
    call :pad6 streamLen streamLenP

      echo(!objectsP! 0 obj
      echo(!streamLenP!
      echo(endobj

    set /a "fsize+=28"
  )
)

for %%i in ("!outFile!") do set "objPos[3]=%%~zi"
>>"!outFile!" (
  echo(3 0 obj
  echo(^<^<
  echo(/Type /Pages
  echo(/Count !pages!
  echo(/MediaBox [ 0 0 !pageWidth! !pageHeight! ]
  <nul set /p "=/Kids [ "
  for /l %%i in (1 1 !pages!) do <nul set /p "=!pageObj[%%i]! 0 R "
  echo(]
  echo(^>^>
  echo(endobj
)

for %%i in ("!outFile!") do set "xrefPos=%%~zi"
>>"!outFile!" (
  echo(xref
  echo(0 !nextObject!
  echo(0000000000 65535 f
  for /l %%i in (1 1 !objects!) do (
    set "pos=0000000000!objPos[%%i]!"
    echo(!pos:~-10! 00000 n
  )

  echo(trailer
  echo(^<^<
  echo(/Size !nextObject!
  echo(/Root 2 0 R
  echo(/Info 1 0 R
  echo(^>^>

  echo(startxref
  echo(!xrefPos!
  echo(%%%%EOF
)
exit /b 0


:tab_iter
  set i=0
  rem set /a cti+=1
  rem echo call !cti!>con:
:loop
For /L %%. in (1,1,250) do (
  if !i! lss !len! (
    set /a "nxt=!i!+1"
    for %%I in (!i!) do (
	if "!ln:~%%I,1!"=="%tab%" (
      		set /a "d=0-(%%I %% tabWidth)+tabWidth, e=nxt, nxt+=d-1, len+=d-1"
      		for /f "tokens=1,2" %%d in ("!d! !e!") do set "ln=!ln:~0,%%I!!spcs:~0,%%d!!ln:~%%e!"
        )
    )
    set /a i=nxt
  ) else exit/b
)
goto :loop
exit /b

:pad4 objects objectsP
	set pad4=0000!%1%!
	set %2=!pad4:~-4!
exit /b
:pad6
	set pad4=000000!%1%!
	set %2=!pad4:~-6!
exit /b

:help
echo(%~1
echo(
echo(Usage:
echo(txt2pdf.bat inFile outFile [/A4^|/A3^|/Letter] [/T:n] [/F:n] [/L]
echo(
echo(  inFile   Path of the source text file.
echo(  outFile  Path of the destination PDF file.
echo(
echo(  /A4      Page size A4.          (default)
echo(  /A3      Page size A3.
echo(  /Letter  Page size Letter.
echo(
echo(  /T:n     Tab width of n spaces. (default  8)
echo(  /F:n     Font size of n points. (default 10)
echo(  /L       Orientation Landscape. (default Portrait)
echo(
exit /b

[aGerman]

It doesn't improve the performance in my tests.
Typical result:

Code: Select all

19:39:18,23
short code
19:39:22,16
long code
19:39:29,44
einstein code
19:39:31,02
einstein code 2
19:39:33,36
Drücken Sie eine beliebige Taste . . .

[einstein1969]

It doesn't improve the performance in my tests.
Typical result:

Code: Select all

19:39:18,23
short code
19:39:22,16
long code
19:39:29,44
einstein code
19:39:31,02
einstein code 2
19:39:33,36
Drücken Sie eine beliebige Taste . . .

i have tested with about 400k of text.txt. I have replicated ten times the txt that you have gived

[einstein1969]

try this

[aGerman]

Long txt file used ...

USB flash drive (that's where I tested before):

Code: Select all

20:58:20,18
short code
21:03:52,91
long code
21:11:46,65
einstein code
21:15:33,84
einstein code 2
21:16:36,20
long code (einstein latest)
21:17:39,96
Drücken Sie eine beliebige Taste . . .

SSD (drive C:):

Code: Select all

21:13:34,37
short code
21:17:34,02
long code
21:24:16,71
einstein code
21:26:10,96
einstein code 2
21:27:01,32
long code (einstein latest)
21:27:50,68
Drücken Sie eine beliebige Taste . . .

I've been just wondering how big the influence of the drive speed is.

[einstein1969]

you send me a zip of your tests so that there are no errors and I do the test on my pc and we compare the times

[einstein1969]

on my pc going down from 250 cycles to 100 cycles in the tab_iter procedure still increases performance by 10%

[aGerman]

Yes the tab handling has always been the slowest part.
Attached the zip file you've been asking for.