gnucash/bindings/guile/business-core.scm
2023-02-13 23:29:00 +08:00

136 lines
4.6 KiB
Scheme

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2 of
;; the License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, contact:
;;
;; Free Software Foundation Voice: +1-617-542-5942
;; 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652
;; Boston, MA 02110-1301, USA gnu@gnu.org
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-module (gnucash engine business-core))
(eval-when (compile load eval expand)
(load-extension "libgnucash-guile" "gnc_guile_bindings_init"))
(use-modules (sw_engine))
(use-modules (srfi srfi-1))
(export gnc:owner-get-address)
(export gnc:owner-get-name-dep)
(export gnc:owner-get-address-dep)
(export gnc:owner-get-name-and-address-dep)
(export gnc:owner-get-owner-id)
(export gnc:make-split->owner)
(define (gnc:owner-get-address owner)
(let ((type (gncOwnerGetType owner)))
(cond
((eqv? type GNC-OWNER-CUSTOMER)
(let ((c (gncOwnerGetCustomer owner)))
(gncCustomerGetAddr c)))
((eqv? type GNC-OWNER-VENDOR)
(let ((v (gncOwnerGetVendor owner)))
(gncVendorGetAddr v)))
((eqv? type GNC-OWNER-EMPLOYEE)
(let ((e (gncOwnerGetEmployee owner)))
(gncEmployeeGetAddr e)))
((eqv? type GNC-OWNER-JOB)
(gnc:owner-get-address (gncJobGetOwner
(gncOwnerGetJob owner))))
(else '()))))
;
; The -dep functions return combined strings of the appropriate
; content. When multiple "lines" are included, separate them
; by newlines.
;
; e.g.: return a string which is basically:
; name \n Attn: contact \n addr1 \n addr2 \n addr3 \n addr4
;
; But only include the strings that really exist.
;
(define (gnc:owner-get-name-dep owner)
(cond
((eqv? (gncOwnerGetType owner) GNC-OWNER-JOB)
(gnc:owner-get-name-dep (gncJobGetOwner (gncOwnerGetJob owner))))
(else (or (gncOwnerGetName owner) ""))))
(define (gnc:owner-get-address-dep owner)
(define (addif elt)
(if (and elt (> (string-length elt) 0))
(list elt)
'()))
(let ((addr (gnc:owner-get-address owner)))
(string-join
(append
(addif (gncAddressGetName addr))
(addif (gncAddressGetAddr1 addr))
(addif (gncAddressGetAddr2 addr))
(addif (gncAddressGetAddr3 addr))
(addif (gncAddressGetAddr4 addr)))
"\n")))
(define (gnc:owner-get-name-and-address-dep owner)
(let ((name (gnc:owner-get-name-dep owner))
(addr (gnc:owner-get-address-dep owner)))
(if (> (string-length name) 0)
(string-append name "\n" addr)
addr)))
(define (gnc:owner-get-owner-id owner)
(let ((type (gncOwnerGetType owner)))
(cond
((eqv? type GNC-OWNER-CUSTOMER)
(let ((c (gncOwnerGetCustomer owner)))
(gncCustomerGetID c)))
((eqv? type GNC-OWNER-VENDOR)
(let ((v (gncOwnerGetVendor owner)))
(gncVendorGetID v)))
((eqv? type GNC-OWNER-EMPLOYEE)
(let ((e (gncOwnerGetEmployee owner)))
(gncEmployeeGetID e)))
((eqv? type GNC-OWNER-JOB)
(gnc:owner-get-owner-id (gncJobGetOwner (gncOwnerGetJob owner))))
(else ""))))
(define owner-guardian (make-guardian))
(define (reclaim-owners)
(let ((owner (owner-guardian)))
(when owner
(gncOwnerFree owner)
(reclaim-owners))))
(add-hook! after-gc-hook reclaim-owners)
;; Create a function which helps find a split's gncOwner. It will
;; allocate and memoize the owners in a hash table because
;; gncOwnerGetOwnerFromLot is slow. When the function is out of scope,
;; and gc is run, the hash table is destroyed and the above hook will
;; run, releasing the owners via gncOwnerFree.
(define (gnc:make-split->owner)
(let ((ht (make-hash-table)))
(lambda (split)
(or (hash-ref ht (gncSplitGetGUID split))
(let ((lot (xaccSplitGetLot split))
(owner (gncOwnerNew)))
(unless (gncOwnerGetOwnerFromLot lot owner)
(gncOwnerCopy (gncOwnerGetEndOwner
(gncInvoiceGetOwner
(gncInvoiceGetInvoiceFromLot lot)))
owner))
(hash-set! ht (gncSplitGetGUID split) owner)
(owner-guardian owner)
owner)))))