OpenVMS Source Code Demos
EBCDIC_ASCII.BAS
1000 %title "ebcdic-ascii_xxx.bas"
%ident "version 102.1" !
declare string constant k_version = "102.1" , ! &
k_program = "ebcdic-ascii" !
!====================================================================================================
! title : ebcdic-ascii_xxx.bas
! author : Neil Rieck (email:n.rieck@bell.net)
! created: 2003.04.28
! purpose: to demo routines to be used with OpenVMS BASIC programs communicating with TN3270 devices
! history:
! ver who when what
! --- --- ------ ------------------------------------------------------------------------------------
! 100 NSR 020214 1. wrote "ebcdic-ascii.c"
! 101 NSR 030428 1. converted "ebcdic-ascii.c" for use with Compaq-BASIC programs
! 102 NSR 120723 1. added lib$tra_ebc_asc() and lib$tra_asc_ebc()
!====================================================================================================
option type=explicit !
!
%include "lib$routines" %from %library "sys$library:basic$starlet" ! lib$ (needed for easy way)
%include "$libdef" %from %library "sys$library:basic$starlet" ! lib$_normal
!
declare string constant k_hex_string = "0123456789ABCDEF" !
!
declare string a_to_e$ ,&
e_to_a$ ,&
junk$ ,&
junk1$ ,&
junk2$ ,&
junk3$ ,&
junk9$ ,&
long handler_error% ,&
rc% ,&
d0 ,&
d1 ,&
i%
!======================================================================
! main
!======================================================================
main: !
print k_program +"_"+ k_version !
print string$(len(k_program +"_"+ k_version), asc("=")) ! underline (how will this optimize?)
gosub build_translation_strings ! initialize for hard way
!
junk1$ = "this is a test" ! test 1
gosub translate_hard !
gosub translate_easy !
!
junk1$ = "abcdefghijklmnopqrstuvwxyz0123456789" ! test 2
gosub translate_hard !
gosub translate_easy !
!
junk1$ = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" ! test 3
gosub translate_hard !
gosub translate_easy !
!
junk1$ = "" ! test 4
for i% = 32 to 126 ! use all viewable ascii characters
junk1$ = junk1$ + chr$(i%) !
next i% !
print "-i- NOTE: ignore the error relating to pos #65 (because ` <> ')" !
gosub translate_hard !
!
goto fini !
!
!=======================================================================
! ascii -> ebcic -> ascii
!
! entry: junk1$ = data to convert
!=======================================================================
!
! translate easy (vms system calls)
!
translate_easy: !
print "-i-easyway" !
!
! unlike other lib$ functions, this one returns sys$_normal rather than lib$_normal
!
rc% = lib$tra_asc_ebc(junk1$,junk2$) ! ascii to ebcdic
!~~~ if rc% <> lib$_normal then x
if (rc% and 7%) <> 1% then !
print "-e-lib$tra_asc_ebc rc: "+ str$(rc%) !
end if !
!
! unlike other lib$ functions, this one returns sys$_normal rather than lib$_normal
!
rc% = lib$tra_ebc_asc(junk2$,junk3$) ! ebcdic to ascii
!~~~ if rc% <> lib$_normal then x
if (rc% and 7%) <> 1% then !
print "-e-lib$tra_ebc_asc rc: "+ str$(rc%) !
end if !
goto compare_data !
!
! translate hard (BASIC only)
!
translate_hard: !
print "-i-hardway" !
junk2$ = xlate$( junk1$, a_to_e$) ! convert to ebcdic
junk3$ = xlate$( junk2$, e_to_a$) ! convert to ascii
goto compare_data !
!
! compare data strings
!
compare_data: !
print "ascii src: ";junk1$ ! original data
print "ebcdic : ";junk2$ !
print "ascii : ";junk3$ !
if junk1$ <> junk3$ then !
print "ruler : 000000000111111111122222222223333333333444444444455555555556666666666777777"
print "ruler : 123456789012345678901234567890123456789012345678901234567890123456789012345"
print "-e- error, ascii strings don't match at position(s):"; !
for i% = 1 to len(junk1$) !
print " ";str$(i%); if mid$(junk1$,i%,1) <> mid$(junk3$,i%,1)
next i% !
print !
else !
print "-i- pass, ascii strings match" !
end if !
print "##################################################" !
return !
!
!=======================================================================
! build translation strings (prep to use BASIC's xlate$ function)
!=======================================================================
build_translation_strings:
!
! build translation string "a-to-e" (ascii to ebcdic)
!
handler_error% = 0
for i% = 0 to 255
read junk$ ! read hex string data
when error in
cause error 155 if len(junk$)<>4
d0 = pos(k_hex_string, mid$(junk$,4,1),1)-1 ! digit 0
d1 = pos(k_hex_string, mid$(junk$,3,1),1)-1 ! digit 1
a_to_e$ = a_to_e$ + chr$( d1 * 16 + d0) ! build string
use !
handler_error% = err !
end when !
if handler_error% <> 0 then !
print "-e- fatal error "+str$(handler_error%)+ " during a-to-e init"
print " i: ";str$(i%);" data: ";junk$ !
goto fini !
end if !
next i% !
!
! build translation string "e-to-a" (ebcdic to ascii)
!
for i% = 0 to 255
read junk$ ! read hex string data
when error in
d0 = pos(k_hex_string, mid$(junk$,4,1),1)-1 ! digit 0
d1 = pos(k_hex_string, mid$(junk$,3,1),1)-1 ! digit 1
e_to_a$ = e_to_a$ + chr$( d1 * 16 + d0) ! build string
handler_error% = 0 ! all is well
use !
handler_error% = err ! oops
end when !
if handler_error% <> 0 then !
print "-e- fatal error "+str$(handler_error%)+ " during e-to-a init"
print " i: "; str$(i%); " data: "; junk$ !
goto fini !
end if !
next i% !
!
return !
!
!====================================================================================================
! note: These tables are pasted from my "c" program. To improve program efficiency, they
! should be convert to numeric constants.
!====================================================================================================
!
! ASCII_to_EBCDIC data
!
data 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, &
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, &
0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D, 0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61, &
0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F, &
0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, &
0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xAD, 0xE0, 0xBD, 0x5F, 0x6D, &
0x7D, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, &
0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xC0, 0x6A, 0xD0, 0xA1, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, 0x4B, &
! &
! EBCDIC_to_ASCII data &
! &
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, &
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, &
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, &
0x2E, 0x2E, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x2E, 0x3F, &
0x20, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x3C, 0x28, 0x2B, 0x7C, &
0x26, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0x5E, &
0x2D, 0x2F, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x7C, 0x2C, 0x25, 0x5F, 0x3E, 0x3F, &
0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22, &
0x2E, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, &
0x2E, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, &
0x2E, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x2E, 0x2E, 0x2E, 0x5B, 0x2E, 0x2E, &
0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x5D, 0x2E, 0x2E, &
0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, &
0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, &
0x5C, 0x2E, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, &
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E, 0x2E
!
!========================================================================================================
!
fini:
end