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iban_harbour_wrapper

Simple IBAN helper library, including a Harbour wrapper.

== Files ==

iban.h: C function declarations. iban.ch: Shared definitions for both C and Harbour. iban.c: IBAN string operations. verify.c: IBAN verification routines. de.c: Guess IBAN from German BLZ and KTO (dangerous). error.c: Generate error text from error codes. hbiban.c: Harbour wrapper. main.c: Test program (C). test.prg: Test program (Harbour). test.hbp, hbiban.hbc: build rules for test.prg with hbmk2.

bic.c, bic.h, bic.ch, hbbic.c: Bank identifier code support.

== General Notes ==

  • IBANs and BICs consist only of digits and upper case letters (7 bit ASCII).
  • Country codes in IBAN and BIC are not the same in all countries.

Resposibilities of the caller:

  • iban_mod97: use a collapsed IBAN, ensure length > 4.

  • iban_from_blz_kto: IBANs can be invalid for sub-accounts.

  • iban_from_blz_kto: ensure collapsed length of BLZ <= 8 and KTO <= 10.

  • iban_from_blz_kto: use iban_verify on the generated IBAN.

  • bic_verify: returns zero (ok) even if the BIC is not collapsed

  • bic_join: can return an invalid BIC for invalid args; use bic_verify.

  • bic_split: always returns a BIC11; primary office (branch XXX) = default.