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clear
flag=1
clc
mode(-1)
printf("Example 8 : Show the method of comparing files using cmp command \n")
disp("****************************************************************")
disp("Answer : ")
disp("INSTRUCTIONS : ")
printf("\nHere all instructions are preloaded in the form of a demo\nPRESS ENTER AFTER EACH COMMAND to see its RESULT\nPRESS ENTER AFTER EACH RESULT TO GO TO THE NEXT COMMAND\n")
halt('.............Press [ENTER] to continue.....')
halt("")
clc
printf("\tUNIX SHELL SIMULATOR(DEMO VERSION WITH PRELOADED COMMANDS)\n\n\n")
printf("\n# Enter the name of the two files which you want to compare \n")
fil(1)=input('','s')
fil(2)=input('','s')
printf('\n\n $ cmp %s %s #to compare the files %s and %s\n',fil(1),fil(2),fil(1),fil(2))
for i=1:2
if ~isfile(fil(i)) then
flag(i)=0
printf("\n%s : file not found \n",fil(i))
printf("# Create a new file named %s?\n # y : Yes \n # n : No \n",fil(i))
resp=input('','s')
if resp=='y' then
flag(i)=1
printf("\n#***Enter the contents of the file %s*****\n# [Enter ^ in a newline to end and close the file]\n",fil(i))
printf('\n\n$ cat > %s #to create a file named %s and fill its contents\n',fil(i),fil(i))
fhdr=mopen(fil(i),'wt')
count=1
while %t
cont=input(string(count)+'. ','s')
if (cont=='^') then
break
end
mfprintf(fhdr,"%s\n",cont)
count=count+1
end
mclose(fhdr)
end
end
end
if flag(1)&flag(2) then
clc
printf("\n $ cmp %s %s #to compare files %s and %s \n",fil(1),fil(2),fil(1),fil(2))
fhdr1=mopen(fil(1),'rt')
fhdr2=mopen(fil(2),'rt')
l=0
cr=1
while %t
[n,a1]=mfscanf(fhdr1,"%c")
[n,a2]=mfscanf(fhdr2,"%c")
if meof(fhdr1)&meof(fhdr2) then
printf(" \n# No output means both the files are identical \n")
break
elseif (meof(fhdr1)&~meof(fhdr2))|(meof(fhdr2)&~meof(fhdr1))|a1~=a2
printf(" %s %s differ : char %d , line %d \n",fil(1),fil(2),cr,l+1)
printf(" # This shows that %dth character in %dth line do not match\n\n",cr,l+1)
break
end
cr=cr+1
if ascii(a1)==10 then
l=l+1
cr=1
end
end
mclose(fhdr1)
mclose(fhdr2)
halt('')
else
printf("\n\n# file %s or %s is not found \n",fil(1),fil(2))
end
printf("\n\n\n$ exit #To exit the current simulation terminal and return to Scilab console\n\n")
halt("........# (hit [ENTER] for result)")
//clc()
printf("\n\n\t\t\tBACK TO SCILAB CONSOLE...\nLoading initial environment')
sleep(1000)
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