IB Statements/InputFile and PrintFile
From CometWiki
(Difference between revisions)
| Line 56: | Line 56: | ||
Procreturn a$ | Procreturn a$ | ||
end | end | ||
| + | |||
| + | Another example using the function: | ||
| + | length dynamic & local TheFile$,TheFullPath$ | ||
| + | |||
| + | clear | ||
| + | TheFullPath$ = "c:\download\FileFromOutsideSource.txt" | ||
| + | TheFile$ = InputFile(TheFullPath$) | ||
| + | ! TheFile$ now contains the contents of the entire file | ||
Revision as of 21:03, 6 June 2012
InputFile and PrintFile Statements
The Comet32 Compiler and Runtime support very long strings. These statements allow you to manipulate a whole text file with one string. The input of a file may be done either with a statement referencing a LUN for an open Comet file or with a function that specifies the full path to any file.
PrintFile(LUN)string$ InputFIle(LUN)string$ TheFile$ = InputFile(TheFullPath$, excp=FileErr)
An Example:
! Declare Function String Ebcdic2Ascii(Instring$) ! Declare 2 Dynamic strings length Dynamic & local EbcdicString$ AsciiString$ clear print(et) close(1) & open(1)'ebcdic.txt' ! Input file containing Ebcdic close(2) & open(2)'ascii.txt' ! Output file for Ascii text InputFile(1)EbcdicString$ ! Read whole file into the string AsciiString$ = Ebcdic2Ascii(EbcdicString$) ! Translate it printfile(2)AsciiString$ ! Write whole text file with one statement done: print 'done' wait stop end
! This is a user defined string function
String Ebcdic2Ascii(Instring$) ! Instring is by reference since it is not declared in the function
length 256 & local table$
length dynamic & local a$
length 5.0 & local I L
table$ = _
'@000102039C09867F978D8E0B0C0D0E0F@'+_
'@101112139D8508871819928F1C1D1E1F@'+_
'@80818283840A171B88898A8B8C050607@'+_
'@909116939495960498999A9B14159E1A@'+_
'@20A0A1A2A3A4A5A6A7A85B2E3C282B21@'+_
'@26A9AAABACADAEAFB0B15D242A293B5E@'+_
'@2D2FB2B3B4B5B6B7B8B97C2C255F3E3F@'+_
'@BABBBCBDBEBFC0C1C2603A2340273D22@'+_
'@C3616263646566676869C4C5C6C7C8C9@'+_
'@CA6A6B6C6D6E6F707172CBCCCDCECFD0@'+_
'@D17E737475767778797AD2D3D4D5D6D7@'+_
'@D8D9DADBDCDDDEDFE0E1E2E3E4E5E6E7@'+_
'@7B414243444546474849E8E9EAEBECED@'+_
'@7D4A4B4C4D4E4F505152EEEFF0F1F2F3@'+_
'@5C9F535455565758595AF4F5F6F7F8F9@'+_
'@30313233343536373839FAFBFCFDFEFF@'
A$ = ""
L = len(Instring$)
for I = 1 to L
A$ = A$ + Sub(table$,asc(sub(Instring$,i,1))+1,1)
next I
Procreturn a$
end
Another example using the function:
length dynamic & local TheFile$,TheFullPath$
clear TheFullPath$ = "c:\download\FileFromOutsideSource.txt" TheFile$ = InputFile(TheFullPath$) ! TheFile$ now contains the contents of the entire file
