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writing "\" in a batch file

Fri, 04/15/2016 - 06:22 am

Hi,

the following function writes lines for a batch file. The associated .exe is called by writing "\hysplit\exec\hyts_std", but it comes out as "\\hysplit\\exec\\hyts_std", and thus the program does not execute. How should it be written in the beginning to be saved in the proper way?

Thanks!
J-E

Function BatchFile(dt)

    variable dt

    String shortDateStr = Secs2Date(dt, -1)

    variable day, month, year, dayOfWeek

    sscanf shortDateStr, "%d/%d/%d (%d)", day, month, year, dayOfWeek

    Variable time = mod(dt, 24*60*60)

    variable hour=trunc(time/(60*60))

    string year_str=num2str(year)[2,3]

    string month_str=num2str(month)

    if (strlen(month_str)==1)

        month_str="0"+month_str

    endif

    string day_str=num2str(day)

    if (strlen(day_str)==1)

        day_str="0"+day_str

    endif

    string hour_str=num2str(hour)

    if (strlen(hour_str)==1)

        hour_str="0"+hour_str

    endif

    NVAR/Z trajduration=root:trajduration

    SVAR/Z PathToMetzFile=root:PathToMetFile

    SVAR/Z Trajprefix=trajprefix

    SVAR/Z Pathtotrajfolder=root:pathtotrajfolder

    string Batch_str

    Batch_str="echo "+year_str+" "+month_str+" "+day_str+" "+hour_str+"        >CONTROL;"

    Batch_str+="echo 1       >>CONTROL;"

    Batch_str+="echo 49.11 6.23 50       >>CONTROL;"

    Batch_str+="echo "+num2str(trajduration)+"       >>CONTROL;"

    Batch_str+="echo 0       >>CONTROL;"

    Batch_str+="echo 10000       >>CONTROL;"

    string gdasfile_list=OtherGDASFile(dt,trajduration)

    variable NbMetFile=itemsinlist(gdasfile_list)

    Batch_str+="echo "+num2str(NbMetFile)+"       >>CONTROL;"

    variable i

    for (i=0;i<NbMetFile;i+=1)

        Batch_str+="echo "+PathToMetzFile+"       >>CONTROL;"

        Batch_str+="echo "+stringfromlist(i,gdasfile_list)+"     >>CONTROL;"

    endfor

    Batch_str+="echo "+pathtotrajfolder+"     >>CONTROL;"

    Batch_str+="echo "+trajprefix+year_str+month_str+day_str+hour_str+ "     >>CONTROL;"

    Batch_str+=";"

    Batch_str+="\hysplit4\exec\hyts_std;"

    print Batch_str

    Make/T/O/N=(ItemsInList(batch_str, ";")) batch_txt

    batch_txt = StringFromList(p, batch_str, ";")

    Newpath/O BatchPath, "C:hysplit4:working:"

    Save/T/G/O/M="\r\n"/P=BatchPath Batch_txt as "batch_run.bat"

End Function

hrodstein

To represent a backslash in a literal string, you need two backslashes. For details, see:

DisplayHelpTopic "Escape Characters in Strings"

Quote:
but it comes out as "\\hysplit\\exec\\hyts_std"

I'm not sure where you are seeing double-backslashes. Possibly you are seeing it in a literal string in the Igor debugger. In that case, a double-backslash means that there is one backslash character in the string. The debugger is simply displaying it as you would need to enter it in a command.

April 15, 2016 at 07:08 am - Permalink

J-E Petit

right, that's what I thought, but if I code "\\hysplit4\\exec\\hyts_std;", then in the batch it is written "\\hysplit4\\exec\\hyts_std".
Anyway, strangely, using "/hysplit4/exec/hyts_std" works.... so I'll go for that

the other problem that I'm facing is to execute the batch file:
while executing executeScriptText/B/Z "C:hysplit4:working:batch_run.bat" doesn't do anything, executeScriptText/B/Z "C:\hysplit4\working\batch_run.bat" launches the batch file, but leads to incomplete calculation. (just to mention that double clicking on the batch file works properly :) )

April 15, 2016 at 07:20 am - Permalink