iConvert V3.2

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rbytes
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iConvert V3.2

Post by rbytes » Tue Oct 30, 2018 3:36 am

This version adds the category Angle, and includes all of the conversions added to date. Please see comments at the head of the program for version history. As new categories and improvements are added to iConvert, the version number will increase, so please download only the highest version available.

IMPORTANT:

You will need to create and run this file first, in the same folder as iConvert. It creates/updates a file called currencies.data. Without that file, iConvert will not run.
Update Currencies.txt
(6.96 KiB) Downloaded 27 times

If you don't require currency conversion now, just download this next tiny file to the same location as iConvert and name it currencies.data. If you choose this option, you will not be able to select the Currency category, and instead will get a popup advising you what you need to do to activate it.

Code: Select all

Currencies:
void=1
You can always download and run Update Currencies.txt later, if you should decide that you wish to do currency conversion.

Here are the still and animated image files that you also need to download.
iconvert3.PNG
iconvert3.PNG (14.12 KiB) Viewed 1558 times
iconvert3.GIF
iconvert3.GIF (222.71 KiB) Viewed 1558 times

Code: Select all

/*
iConvert V3.2
by rbytes and Dutchman, October 2018
Converts measurements in many categories.
A collaborative international project.

V3.2
- Angle category added by rbytes
- Energy transition category added by Dutchman
- Error trap added for Currency category
V3.1
- Temperature category added by Dutchman
V3
- Currency category added by Dutchman
  DATA generated with "Update currencies.sb"
V2
- animation added to title
  (plays only once, at launch)
- measures added in most categories
- scientific notation is now used for
  results larger than 100,000,000 or
  smaller than .00000001
V1.1
- added Horsepower (Metric) to
  Power category
- eliminated >>> button;
  calculation is now automatic
  when list selections or
  input values are changed.
- code efficiency improved
*/
OPTION BASE 1
SET ORIENTATION LANDSCAPE
SET BUTTONS CUSTOM
SET TOOLBAR OFF
laun$=LAUNCHER$()
GET SCREEN SIZE sw,sh

' set to 1 to test iPhone layout on iPad
iostest=0
IF iostest THEN
  sw=568
  sh=320
  dev$=""
ENDIF
rw=sw/1024!rh=sh/740

'b'========= Constants ===================
'' *** Note - IP address may change if router is rebooted ***
' run ipconfig on your PC to find its IP address.

URL$="192.170.61.43"   ' example of IP address
DIM h$(2)


' each line of a file sent to a PC print server must end with these characters:

cr$=CHR$(13)       ' carriage return character
lf$=CHR$(10)       ' line feed character


' interface object names

x$="guide"
y$="guide2"
n$="title"
o$="category"
p$="from"
q$="to"
pi$="from_in"
qi$="to_in"
qi2$="cover"


lf$=CHR$(10)
q$=CHR$(34)
cat=1          ' default category (angle)
invalue=1

upshift=7

'r'  conversion constants  
KwhPerYear=1000/(365.25*24)
MJperYear=1E6/(365.25*24*60*60)
''
' correction for iPad display only
IF rw=1 then shift=10

' correction for non-iPad display only
IF rw<1 then shift2=75

fm$="##,###,###,###,###,###,###.#######"    ' formats the result with commas
fm2$="####################.#######"      ' formats the result without commas


' number of measures in each category

cats=16
DIM cat$(cats)
angle=9
area=9
cook=9
curr=54
dat=8
energ=12
EnergyTrans=28
leng=13
prefix=21
pow=14
press=13
spd=11
Tscales=8 ! Tscale$="Temperature"
timing=10
vol=12
wgt=10


' include constant 'Valuta' and 'currencies:' data
{currencies.data}



'b'============ Initialisation============
''
GRAPHICS
GRAPHICS CLEAR .9,1,1


 ' animate title if gif animation file exists

A$="iconvert3.GIF"
IF FILE_EXISTS(A$) THEN
  SPRITE N$ LOAD A$
  SPRITE N$ AT sw/3-shift2,sh/60+3*shift scale 1*rh
  SPRITE N$ SHOW
ELSE
  DRAW IMAGE "iconvert3.PNG" AT sw/2.8,sh/20 SCALE .8*rw
ENDIF
' read categories
RESTORE TO Categories

FOR t=1 TO cats
  READ cat$(t)
NEXT t

RESTORE TO angle     ' default category
items=angle
DIM measure$(items)
GOSUB setcategory


' create three lists

SET LISTS FONT SIZE 18*rw
LIST o$ TEXT cat$ AT sw*.1,260*rh SIZE 240*rw,310*rh
LIST o$ SELECT cat
LIST p$ TEXT measure$ AT sw*.385,260*rh SIZE 240*rw,310*rh
LIST p$ SELECT 1
LIST q$ TEXT measure$ AT sw*.672,260*rh SIZE 240*rw,310*rh
LIST q$ SELECT 1


' create fields and buttons

SET BUTTONS FONT SIZE 20*rw
DRAW COLOR 0,0,0
guide$="Pick from each list"&lf$&"Enter quantity here"
DRAW LINE sw*.26,168*rh TO sw*.392,168*rh
FILL COLOR 0,0,0
FILL CIRCLE sw*.39,168*rh SIZE 3*rw
FILL COLOR 1,1,1
FIELD x$ TEXT guide$ AT sw*.1,132*rh-upshift SIZE 250,60 RO ML
FIELD x$ FONT SIZE 18*rw
FIELD x$ BACK ALPHA 0
guide2$="All lists can be scrolled"
DRAW LINE sw*.096,618*rh TO sw*.38,618*rh
DRAW LINE sw*.63,618*rh TO sw*.91,618*rh
FIELD y$ TEXT guide2$ AT sw*.41,600*rh-upshift*.8 SIZE 250,60 RO ML
FIELD y$ FONT SIZE 18*rw
FIELD y$ BACK ALPHA 0
FIELD o$ TEXT "CATEGORY" AT sw*.115,210*rh SIZE 130,30 RO
FIELD o$ FONT SIZE 20*rw
FIELD o$ BACK ALPHA 0
FIELD p$ TEXT "FROM" AT sw*.405,210*rh SIZE 100,30 RO
FIELD p$ FONT SIZE 20*rw
FIELD p$ BACK ALPHA 0
FIELD q$ TEXT "TO" AT sw*.69,210*rh SIZE 70,30 RO
FIELD q$ FONT SIZE 20*rw
FIELD q$ BACK ALPHA 0
FILL ALPHA 0
BUTTON "copy" TEXT "COPY" AT 285*rw,650*rh SIZE 100*rw,50*rh
BUTTON "print" TEXT "PRINT" AT 405*rw,650*rh SIZE 100*rw,50*rh
BUTTON "save" TEXT "SAVE" AT 525*rw,650*rh SIZE 100*rw,50*rh
BUTTON "stop" TEXT "STOP" AT 645*rw,650*rh SIZE 100*rw,50*rh
FILL ALPHA 1
FIELD pi$ TEXT "1" AT sw*.400,150*rh SIZE 200*rw,30*rh
FIELD pi$ FONT SIZE 18*rw
FIELD qi$ TEXT "1" AT sw*.640,145*rh SIZE 280*rw,40*rh
FIELD qi$ FONT SIZE 22*rw
FIELD qi2$ TEXT "" AT sw*.640,145*rh SIZE 280*rw,40*rh RO
FIELD qi2$ BACK ALPHA 0
FILL COLOR .6,.8,.8
FILL RECT sw*.395,145*rh TO sw*.6,185*rh
FILL COLOR .8,.8,.8
FILL RECT sw*.635,140*rh TO sw*.92,190*rh
DRAW RECT sw*.1-1,258*rh TO sw*.1+240*rw+1,258*rh+312*rh
DRAW RECT sw*.386-2,258*rh TO sw*.386+240*rw,258*rh+312*rh
DRAW RECT sw*.673-2,258*rh TO sw*.673+240*rw,258*rh+312*rh

timer=time ()    ' set timer to stop title anim after one cycle


'b'========== main program loop ===================
''
DO

' play once, then stop animation

IF time()-timer>1 AND time()-timer <2 and not noplay THEN
  IF FILE_EXISTS(A$) THEN SPRITE N$ PLAY
  noplay=1
ENDIF
IF time()-timer>6 AND time()-timer <7 THEN
  IF FILE_EXISTS(A$) THEN SPRITE N$ STOP
ENDIF


' check which category is selected

type=LIST_SELECTED(o$)


' choose and prepare a new category if necessary

IF type<>cat THEN
  oldcat=cat
  cat=type
  changed=1

  ON cat GOTO 10,15,20,25,30,40,45,50,60,70,80,90,95,100,110,120
  10 RESTORE TO angle
     items=angle
     GOTO skip
  15 RESTORE TO area
     items=area
     GOTO skip
  20 RESTORE TO cooking
     items=cook
     GOTO skip
  25 RESTORE TO currencies
     if void then
       list o$ select oldcat
       type=oldcat
       gosub message
       goto skip2
     endif
     items=currencies
     GOTO skip
  30 RESTORE TO data
     items=dat
     GOTO skip
  40 RESTORE TO energy
     items=energ
     GOTO skip
  45 RESTORE TO EnergyTransition
     items=EnergyTrans
     GOTO skip
  50 RESTORE TO length
     items=leng
     GOTO skip
  60 RESTORE TO prefixes
     items=prefix
     GOTO skip
  70 RESTORE TO power
     items=pow
     GOTO skip
  80 RESTORE TO pressure
     items=press
     GOTO skip
  90 RESTORE TO speed
     items=SPD
     GOTO skip
  95 RESTORE TO Temperatures
     items=Tscales
     GOTO Skip
  100 RESTORE TO timing
     items=timing
     GOTO skip
  110 RESTORE TO volume
     items=vol
     GOTO skip
  120 RESTORE TO weight
     items=wgt
     GOTO skip

  skip:
  GOSUB setcategory
  LIST p$ TEXT measure$
  LIST p$ SELECT 1
  LIST q$ TEXT measure$
  LIST q$ SELECT 1
  FIELD pi$ TEXT "1"
  skip2:
ENDIF

IF LIST_SELECTED(p$)<>selp or LIST_SELECTED(q$)<>selq then changed=1


' calculate the conversion

if VAL(FIELD_TEXT$(pi$))<>invalue or changed then
  invalue=VAL(FIELD_TEXT$(pi$))
  selp=LIST_SELECTED(p$)
  selq=LIST_SELECTED(q$)
  GOSUB Convert ' calculate OutValue
  if outvalue<100000000 and outvalue>.000000001 then 
    out$=STR$(outvalue,fm$)
    out2$=STR$(outvalue,fm2$)
    format(out$)!out$=format.form$
    format(out2$)!out2$=format.form$
  else
    out$=STR$(outvalue)
  endif
  fsize=22*rw
  FIELD qi$ FONT SIZE fsize
  FIELD qi$ TEXT out$
  FIELD qi2$ TEXT ""
ENDIF

' copy the conversion info to clipboard

IF bp("copy") THEN
  GOSUB compile
  IF cp=0 THEN!CLIPBOARD CLEAR!cp=1!ENDIF
  CLIPBOARD WRITE convert$
  BEEP
ENDIF


' print the conversion info

IF bp("print") THEN
GOSUB compile
h$(1) = "content-type:text/html"   ' make header info
h$(2) = "content-length:" & LEN(convert$)

' print convert$ using Henko print technique
HTTP URL$ HEADER H$ POST convert$   ' send doc to the print server
BEEP
ENDIF


' save the conversion info to a file

IF bp("save") THEN
  GOSUB compile
  fname$="converted.txt"
  IF FILE_EXISTS(fname$) THEN FILE fname$ DELETE
  FILE fname$ WRITELINE convert$
  BEEP
ENDIF


' end the program

IF bp("stop") THEN
  IF laun$="desktop" THEN
    IF FILE_EXISTS("/launch") THEN
      RUN "/-Launch.sb"
    ELSE
      EXIT
    ENDIF
  ENDIF
  END
ENDIF
SLOWDOWN
UNTIL 0
END

'g'========== Subroutines and Functions =============
Convert:
'--- Convert via formula
'  temperature
IF Cat$(cat)=Tscale$ THEN
  Outvalue=FromCelsius(Celsius(Invalue,measureval(selp)),measureval(selq))
  RETURN
ENDIF
'--- Convert via ratio
  outvalue=invalue*1/(measureval(selq)/measureval(selp))
RETURN

' temperature conversion

DEF FromCelsius(Value,UnitPointer)
'Converts Value on 'Unit'-scale to Celsius-scale
'  to newvalue in scale of Unitpointer
ON UnitPointer GOTO 1,2,3,4,5,6,7,8
  1 RETURN Value 'Celsius
  2 RETURN Value+273.15 'Kelvin
  3 RETURN Value*9/5+32 'Fahrenheit
  4 RETURN (Value+273.15)*9/5 'Rankine
  5 RETURN (100-Value)*3/2 'Delisle
  6 RETURN Value*33/100 'Newton
  7 RETURN Value*4/5 'Réamur
  8 RETURN Value*21/40+7.5 'Rømer
END DEF
'
DEF Celsius(Value,UnitPointer)
'Converts Value in 'Unit' to new value in Celsius
ON UnitPointer GOTO 1,2,3,4,5,6,7,8
  1 RETURN Value 'Celsius
  2 RETURN Value-273.15 'Kelvin
  3 RETURN (Value-32)*5/9 'Fahrenheit
  4 RETURN (Value-491.67)*5/9 'Rankine
  5 RETURN 100-Value*2/3 'Delisle
  6 RETURN Value*100/33 'Newton
  7 RETURN Value*5/4 'Réamur
  8 RETURN (Value-7.5)*40/21 'Rømer
END DEF


' read the data for a category

setcategory:
DIM measure$(items)
FOR t=1 TO items
  READ measure$(t)
NEXT t
DIM measureval(items)
FOR t=1 TO items
  READ measureval(t)
NEXT t
RETURN


' prepare a string showing the conversion, for copying or saving to a file

compile:
  selp=LIST_SELECTED(p$)
  selq=LIST_SELECTED(q$)
  temp1$=measure$(selp)
  temp2$=measure$(selq)


  ' if a value is 1 or a fraction, change the name from plural to singular
  convin=val(FIELD_TEXT$(p$))
  temp1len=LEN(temp1$)
  IF convin=<1 AND RIGHT$(temp1$,1)="s" THEN temp1$=LEFT$(temp1$,temp1len-1)
  IF VAL(out2$)=<1 AND RIGHT$(temp2$,1)="s" THEN temp2$=LEFT$(temp2$,LEN(temp2$)-1)
  convert$&=FIELD_TEXT$(pi$)&" "&temp1$&" = "&FIELD_TEXT$(qi$)&" "&temp2$
  convert$&=cr$&lf$&FIELD_TEXT$(pi$)&" "&temp1$&" = "&out2$&" "&temp2$&cr$&lf$&cr$&lf$
RETURN


' message if user has not downloaded and run Update Currencies.sb

message:
a$="To use this category, please download the file Update Currencies.txt from the Forum at this link:"&lf$&lf$&"https://kibernetik.pro/forum/viewtopic.php?f=20&t=2280"&lf$&lf$&"Then run it. The next time you run iConvert, the Currency category will be functional."
' Example:
pw("notice","Notice!",a$,sw/2-200*rw,sh/4,400*rw,400*rw,1,1,1,1)
wait: SLOWDOWN
IF BUTTON_PRESSED("close") THEN
  PAGE pw.NAME$ HIDE ! PAGE "" SET
ELSE 
  GOTO wait
ENDIF
RETURN


' shortcut for button press

DEF bp(a$) = BUTTON_PRESSED(a$)


' remove scientific notation before displaying result

DEF format(form$)
  WHILE LEFT$(form$,1)=" " OR LEFT$(form$,1)=","
    form$=RIGHT$(form$,LEN(form$)-1)
    ' trim leading spaces and separators
  ENDWHILE
  IF INSTR (form$, ".") THEN        ' if form$ has a decimal point
    IF NOT numpad.curr THEN
    ' trim trailing zeros
    WHILE RIGHT$(form$,1)="0"
      form$=LEFT$(form$,LEN(form$)-1)
    ENDWHILE
    IF RIGHT$(form$,1)="." THEN
      form$=LEFT$(form$,LEN(form$)-1)
    ENDIF
    ENDIF
  ENDIF
END DEF

DEF pw(NAME$,title$,a$,xs,ys,ww,hh,R,G,B,ALPHA)
PAGE NAME$ SET
PAGE NAME$ SHOW
PAGE NAME$ FRAME xs,ys,ww,hh
PAGE NAME$ COLOR R,G,B,ALPHA
FIELD NAME$ TEXT a$ at 20*.rw,50*.rh size 380*.rw,360*.rh ML RO
BUTTON "close" title "❎" AT ww-30,5 SIZE 24*.rw,24*.rh
BUTTON "bottom" title "" AT -6,hh-3 SIZE ww+12,3
BUTTON "left" title "" AT 0,-6 SIZE 3,hh+12*.rh
BUTTON "right" title "" AT ww-3,-6 SIZE 3,hh+12*.rh
BUTTON "upper1" title "" AT -6,0 SIZE ww+12,3
BUTTON "upper2" title "" AT -6,30 SIZE ww+12,3
BUTTON "title" title title$ AT ww/2-50,3 SIZE 100*.rw,28*.rh
'
' other UI objects
'
'
END DEF
''

/*
Conversion Data

The technique I use to calculate conversions is to choose a reference measure in the middle of the range and set its value to 1. All other measures are then assigned numbers representing the ratio of their value to the reference measure's value.
*/

Categories:

DATA "Angle", "Area", "Cooking", "Currency "&CurrDate$ ,"Data", "Energy", "Energy Transition","Length", "Prefixes", "Power", "Pressure", "Speed"
DATA Tscale$, "Time", "Volume", "Weight"

Angle:
DATA "Degrees", "Radians", "Gradians", "Minutes", "Seconds", "Circles", "Quadrants", "Points", "Mils"
DATA 1, 57.2957795128962, .9, .0166666666666667, .000277777777777778, 360, 90, 11.25, .05625

Area:
DATA "Acres", "Square Kilometers", "Hectares", "Square Meters", "Square Centimeters", "Square Miles", "Square Yards", "Square Feet", "Square Inches"
DATA 4046.85642, 1000000, 10000, 1, .0001, 2589988.110266, .8361273, .0929030, .000645159722

Cooking:
DATA "Centiliters", "Cups (CD)", "Fluid Ounces (CD)", "Liters", "Milliliters", "Pints (CD)", "Quarts (CD)", "Tablespoons", "Teaspoons"
DATA .35195,8,1,35.195079,.035195,20,40,.520421,.1734737

Data:
DATA "Bits", "Bytes", "Words", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Petabytes"
DATA .000125, .001, .008, 1, 1000, 1000000, 1000000000, 1000000000000

Energy:
DATA "BTU", "Calories", "Cubic Mile of Oil", "Foot Pounds", "Horsepower Per Hr", "Joules", "KiloJoules", "KiloCalories", "Kilowatt Hours", "Kilotons", "MegaJoules", "Therms (US)"
DATA 251.99576, 1, 38334721315564331336, .32404825, 641615.559278, .23900573, 239.00573, 1000, 860420.6501033, 999999974320, 239005.7299999, 25210420.65043

EnergyTransition:
DATA "Watt", "Kilowatt", "Kwh/y", "Kg/y Coal", "Kg/y Brown coal", "Kg/y Peat dry", "Kg/y Wood", "Kg/y Fat", "Kg Battery Li-Po, Li-Hv", "m² Solar panel", "Liter/y petrol", "Liter/y diesel oil", "Liter/y heating oil", "Liter/y Hydrogen 700bar", "Liter/y Alcohol", "Liter/y LNG", "Liter/y LPG", "Liter/day heating oil", "Liter/day LNG", "Liter/day LPG", "m³/y natural gas", "m³/y natural gas NL", "m³/y Hydrogen", "m³/day natural gas", "m³/day natural gas NL", "m³/day Hydrogen", "m³/day water to ice", "g/y Thorium"
DATA 1, 1000, 0.114077, 0.7465713, 0.4753213, 0.4753213, 0.4753213, 1.1724592, 0.0570386, 31.6564, 1.0837326, 1.2231602, 1.1819657, 0.2905798, 0.7415013, 0.7034755, 0.8143839, 431.713, 256.944, 297.454, 1.234251, 1.0583821, 0.5357, 450.81, 386.574, 195.664, 3865.74, 2516.6679

Length:
DATA "Ångströms","Centimeters", "Fathoms", "Feet", "Furlongs (US)", "Inches", "Kilometers", "Meters","Mils", "Miles", "Millimeters", "Nanometers", "Yards"
DATA .00000001, 1, 182.88, 30.48, 20116.8, 2.54, 100000, 100, .00254, 160934.39999, .1, .0000001, 91.44

Power:
DATA "Watts","Kilowatts", "Megawatts", "Gigawatts", "Terawatts", "KWh/year", "MegaJoule/year (MJ/y)","Horsepower (IT)", "Horsepower (Metric)", "Moosepower", "Calories per Hour", "BTU per Hour", "Foot Pounds per Hr", "Tons Refrigeration"
DATA 1,1000, 1E6, 1E9, 1E12, KwhPerYear,MJperYear,745.69987, 756.042476, 2438.4385749, 0.0011629, 2930710000, 3766160000, 3516.8

Prefixes:
DATA "yotta", "zetta", "exa", "peta", "tera", "giga", "mega", "kilo", "hecto", "deca", "none", "deci", "centi", "milli", "micro", "nano", "pico", "femto", "atto", "zepto", "yocto"
DATA 1000000000000000000000000, 1000000000000000000000, 1000000000000000000, 1000000000000000, 1000000000000, 1000000000, 1000000, 1000, 100, 10, 1, .1, .01, .001, .000001, .000000001, .000000000001, .000000000000001, .000000000000000001, .000000000000000000001, .000000000000000000000001

Pressure:
DATA "Bars", "Millibars", "Pascals", "HectoPascals", "KiloPascals", "MegaPascals", "Atmospheres", "Pounds per Sq. Foot", "Pounds per Sq. Inch", "Inches of Water", "Inches of Mercury", "Centimeters of Water", "Centimeters of Mercury"
DATA 1000, 1, .01, 1, 10, 10000, 1013.250099, .47880258, 68.947572, 2.490889, 33.864, .98066496, 13.332283459

Speed:
DATA "Feet per Second", "Feet per Minute", "Furlongs per Fortnight", "Inches per Second", "Kilometers per Hour", "Kilometers per Sec.", "Knots", "Miles per Hour", "Miles per Second", "Speed of Light", "Speed of Sound"
DATA 1.09728, .018288, .000598715, .09144, 1, 3600, 1.8519999, 1.609349, 5793.638399, 1079252848.794, 1225.0439999

Temperatures:
DATA "Celsius [°C]", "Delisle [°D]", "Fahrenheit [°F]", "Kelvin [K]", "Newton [°N]", "Rankine [°Ra]", "Réamur [°Re]", "Rømer [°Rø]"
DATA 1,5,3,2,6,4,7,8 ' unit-pointers

Timing:
DATA "Milliseconds", "Seconds", "Minutes", "Hours", "Days", "Weeks", "Fortnights", "Months", "Years", "Leap Years"
DATA .00001666666, .01666666, 1, 60, 1440, 10080, 20160, 43800, 525600, 527040

Volume:
DATA "Cubic Centimeters", "Cubic Feet", "Cubic Inches", "Cubic Yards", "Cups (CD)", "Fluid Ounces (CD)", "Gallons (CD)", "Gallons (US)", "Liters", "Milliliters", "Pints (CD)", "Quarts (CD)"
DATA 1,28316.84659,16.3871,764554,284.130625,28.4131,4546.08999,3785.411784,1000,1,568.26125,1136.5225

Weight:
DATA "Grams", "Kilograms", "Ounces", "Ounces (troy)", "Pounds", "Grains", "Tonnes (metric)", "Tons (US short)", "Long Tons (UK)", "Stones"
DATA .0022046226, 2.2046226, .0625, .0685714, 1, 10, 2204.62262184, 2000, 2240, 14

' this routine is used when adding a new category, until its data is entered.

TBA:
DATA "To Be Added","","","","","","","","",""
DATA 1,1,1,1,1,1,1,1,1,1
Attachments
22C65EE1-EDC2-4BC4-9EAC-250999B7AF4A.png
22C65EE1-EDC2-4BC4-9EAC-250999B7AF4A.png (254.46 KiB) Viewed 1626 times
Last edited by rbytes on Fri Nov 02, 2018 9:22 pm, edited 6 times in total.
Zzzzz

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rbytes
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Re: iConvert V3.2

Post by rbytes » Tue Oct 30, 2018 5:42 pm

Ton, I discovered today that unless currencies.data exists, iConvert ends with an include error, as could be expected. I made an error trap in version 3.2, but it still requires the user to have at minimum a small modified currencies.data file. There is no way to run iConvert to test for a file's existence before including it, due to the way Smart Basic handles includes.

currencies.data cannot be an empty file. It has to contain the label Currencies: or iConvert will quit with a missing label error. However I found that I needed only one additional line: void=1 to create the error trap. When a user selects the Currency category, if void=1, the category selection will be ignored, a message will pop up to explain how to make Currency functional, and the previously-selected category will be re-selected.

Once Update Currencies.txt is run, void will no longer be defined in currencies.data, so will thenceforth have a value of 0. Then the Currency category will function perfectly.

If you can think of a better way, please advise. My preference would be to embed the Update Currencies code within iConvert, have it execute automatically the first time, and add a button to execute it after that. We would still need users to put the "dummy" currencies.data file in the same folder as iConvert at installation, so that they would not get an include error the first time iConvert is run.
Zzzzz

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Dutchman
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Re: iConvert V3.2

Post by Dutchman » Fri Nov 02, 2018 10:28 am

Instead of adding the variable 'void' you can also test on the value of 'curr'. That variable is present and non-zero in the data file, it gives the number of items.
The biggest problem, however, is that an include-file still has to be present. I do not see a solution for that.
Inserting the program 'Update currencies' has the disadvantage that iConvert then can fail as a result of changes on the currency website.
I suggest that you add at the beginning of iConvert the warning for the necessary generation of the data file
and/or you add or you add the above warning
IMPORTANT:
You will need to create and run …
when publishing a new version.
I do not object, on the contrary, if you integrate "update currencies".
We consider it a refreshing mental exercise to figure out ways to circumvent foolishness (Quote from Richard)

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rbytes
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Re: iConvert V3.2

Post by rbytes » Fri Nov 02, 2018 2:30 pm

With a few changes, Update Currencies could become the iConvert Launch file. I have posted some suggestions in the topic iConvert 3.
Zzzzz

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