309 lines
14 KiB
Scheme
309 lines
14 KiB
Scheme
(define-library
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(retropikzel pffi v0.1.0 main)
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(cond-expand
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(sagittarius
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(import (scheme base)
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(scheme write)
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(scheme file)
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(scheme process-context)
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(sagittarius ffi)
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(sagittarius)))
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(else (error "Implementation not supported by r7rs-pffi")))
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(export pffi-call
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pffi-types
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pffi-type-sizes
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pffi-size-of
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pffi-pointer-allocate
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pffi-pointer-null
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pffi-string->pointer
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pffi-pointer->string
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pffi-pointer->bytevector
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pffi-pointer-free
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pffi-pointer?
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pffi-pointer-null?
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pffi-shared-object-load
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pffi-shared-object-auto-load
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pffi-pointer-set!
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pffi-pointer-get
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pffi-pointer-deref)
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(begin
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(define library-version "v0.1.0")
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(define pffi-types
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'(int8
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uint8
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int16
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uint16
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int32
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uint32
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int64
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uint64
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intptr
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uintptr
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char
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unsigned-char
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short
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unsigned-short
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int
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unsigned-int
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long
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unsigned-long
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float
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double
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pointer))
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(define string-split
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(lambda (str mark)
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(let* ((str-l (string->list str))
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(res (list))
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(last-index 0)
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(index 0)
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(splitter (lambda (c)
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(cond ((char=? c mark)
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(begin
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(set! res (append res (list (string-copy str last-index index))))
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(set! last-index (+ index 1))))
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((equal? (length str-l) (+ index 1))
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(set! res (append res (list (string-copy str last-index (+ index 1)))))))
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(set! index (+ index 1)))))
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(for-each splitter str-l)
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res)))
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(define pffi-pointer-adress-get
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(lambda (pointer)
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(cond-expand (sagittarius (address pointer)))))
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(define auto-load-paths
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(append
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(cond-expand
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(windows
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(append
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(if (get-environment-variable "SYSTEM")
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(list (get-environment-variable "SYSTEM"))
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(list))
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(if (get-environment-variable "WINDIR")
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(list (get-environment-variable "WINDIR"))
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(list))
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(list ".")
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(string-split (get-environment-variable "PATH") #\;)))
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(else
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(append
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(list (if (get-environment-variable "GUIX_ENVIRONMENT")
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(string-append (get-environment-variable "GUIX_ENVIRONMENT") "/lib")
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""))
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(if (get-environment-variable "LD_LOAD_PATH")
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(list) ;(string-split (get-environment-variable "LD_LOAD_PATH") #\:)
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(list))
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(list "/lib/x86_64-linux-gnu"
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"/usr/lib/x86_64-linux-gnu"
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"/usr/local/lib"))))))
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(define platform-file-extension (cond-expand (windows ".dll") (else ".so")))
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(define memorysession #f)
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(define linker #f)
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(define symbol-lookup #f)
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(define kebab-case->snake-case
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(lambda (str) (string-map (lambda (c) (if (char=? c #\-) #\_ c)) str)))
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(define pffi-type->native-type
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(lambda (type)
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(cond-expand
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(sagittarius
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(cond ((equal? type 'int8) 'int8_t)
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((equal? type 'uint8) 'uint8_t)
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((equal? type 'int16) 'int16_t)
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((equal? type 'uint16) 'uint16_t)
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((equal? type 'int32) 'int32_t)
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((equal? type 'uint32) 'uint32_t)
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((equal? type 'int64) 'int64_t)
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((equal? type 'uint64) 'uint64_t)
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((equal? type 'intptr) 'intptr_t)
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((equal? type 'uintptr) 'uintptr_t)
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((equal? type 'char) 'char)
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((equal? type 'unsigned-char) 'char)
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((equal? type 'short) 'short)
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((equal? type 'unsigned-short) 'unsigned-short)
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((equal? type 'int) 'int)
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((equal? type 'unsigned-int) 'unsigned-int)
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((equal? type 'long) 'long)
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((equal? type 'unsigned-long) 'unsigned-long)
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((equal? type 'float) 'float)
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((equal? type 'double) 'double)
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((equal? type 'pointer) 'void*)
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((equal? type 'void) 'void)
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(else (error "pffi-type->native-type -- No such pffi type" type)))))))
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(define pffi-pointer?
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(lambda (object)
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(cond-expand (sagittarius (pointer? object)))))
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(define pffi-call
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(lambda (shared-object name type arguments)
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(let ((types (map pffi-type->native-type (map car arguments)))
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(vals (map cdr arguments)))
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(cond-expand
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(sagittarius
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(apply (make-c-function shared-object
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(pffi-type->native-type type)
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name
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types) vals))))))
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(define pffi-size-of
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(lambda (type)
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(cond ((eq? type 'int8) (cond-expand (sagittarius size-of-int8_t)))
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((eq? type 'uint8) (cond-expand (sagittarius size-of-uint8_t)))
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((eq? type 'int16) (cond-expand (sagittarius size-of-int16_t)))
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((eq? type 'uint16) (cond-expand (sagittarius size-of-uint16_t)))
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((eq? type 'int32) (cond-expand (sagittarius size-of-int32_t)))
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((eq? type 'uint32) (cond-expand (sagittarius size-of-uint32_t)))
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((eq? type 'int64) (cond-expand (sagittarius size-of-int64_t)))
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((eq? type 'uint64) (cond-expand (sagittarius size-of-uint64_t)))
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((eq? type 'intptr) (cond-expand (sagittarius size-of-intptr_t)))
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((eq? type 'uintptr) (cond-expand (sagittarius size-of-uintptr_t)))
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((eq? type 'char) (cond-expand (sagittarius size-of-char)))
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((eq? type 'unsigned-char) (cond-expand (sagittarius size-of-char)))
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((eq? type 'short) (cond-expand (sagittarius size-of-short)))
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((eq? type 'unsigned-short) (cond-expand (sagittarius size-of-unsigned-short)))
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((eq? type 'int) (cond-expand (sagittarius size-of-int)))
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((eq? type 'unsigned-int) (cond-expand (sagittarius size-of-unsigned-int)))
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((eq? type 'long) (cond-expand (sagittarius size-of-long)))
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((eq? type 'unsigned-long) (cond-expand (sagittarius size-of-unsigned-long)))
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((eq? type 'float) (cond-expand (sagittarius size-of-float)))
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((eq? type 'double) (cond-expand (sagittarius size-of-double)))
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((eq? type 'pointer) (cond-expand (sagittarius size-of-void*)))
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(else (error "Can not get size of unknown type" type)))))
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(define pffi-pointer-allocate
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(lambda (size)
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(cond-expand
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(sagittarius (allocate-pointer size)))))
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(define pffi-pointer-null
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(lambda ()
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(cond-expand
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(sagittarius (integer->pointer 0)))))
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(define pffi-string->pointer
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(lambda (string-content)
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(cond-expand (sagittarius (bytevector->pointer (string->utf8 (string-copy string-content)))))))
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(define pffi-pointer->string
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(lambda (pointer)
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(cond-expand (sagittarius (pointer->string pointer)))))
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(define pffi-pointer->bytevector
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(lambda (pointer size)
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(cond-expand (sagittarius (pointer->bytevector pointer size)))))
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(define pffi-shared-object-load
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(lambda (path)
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(cond-expand (sagittarius (open-shared-library path)))))
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(define pffi-shared-object-auto-load
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(lambda (object-name . additional-paths)
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(let* ((paths (append auto-load-paths additional-paths))
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(shared-object #f))
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(for-each
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(lambda (path)
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(if (not shared-object)
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(let ((object-path (string-append path
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"/"
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object-name
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(cond-expand (windows ".dll") (else ".so"))))
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(object-version-path (string-append path
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"/"
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object-name
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(cond-expand (windows ".dll") (else ".so.0"))))
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(object-lib-path (string-append path
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"/"
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(cond-expand (windows "") (else "lib"))
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object-name
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(cond-expand (windows ".dll") (else ".so"))))
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(object-version-lib-path (string-append path
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"/"
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(cond-expand (windows "") (else "lib"))
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object-name
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(cond-expand (windows ".dll") (else ".so.0")))))
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(cond
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((file-exists? object-path)
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(set! shared-object (pffi-shared-object-load object-path)))
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((file-exists? object-version-path)
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(set! shared-object (pffi-shared-object-load object-version-path)))
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((file-exists? object-lib-path)
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(set! shared-object (pffi-shared-object-load object-lib-path)))
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((file-exists? object-version-lib-path)
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(set! shared-object (pffi-shared-object-load object-version-lib-path)))))))
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paths)
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(if (not shared-object)
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(error (string-append "Could not load shared object: " object-name))
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shared-object))))
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(define pffi-pointer-free
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(lambda (pffi)
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(cond-expand (sagittarius (c-free pointer)))))
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(define pffi-pointer-null?
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(lambda (pointer)
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(cond-expand (sagittarius (null-pointer? pointer)))))
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(define pffi-pointer-set!
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(lambda (pointer type offset value)
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(cond-expand
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(sagittarius
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(let ((p pointer))
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(cond ((equal? type 'int8) (pointer-set-c-int8_t! p offset value))
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((equal? type 'uint8) (pointer-set-c-uint8_t! p offset value))
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((equal? type 'int16) (pointer-set-c-int16_t! p offset value))
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((equal? type 'uint16) (pointer-set-c-uint16_t! p offset value))
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((equal? type 'int32) (pointer-set-c-int32_t! p offset value))
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((equal? type 'uint32) (pointer-set-c-uint32_t! p offset value))
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((equal? type 'int64) (pointer-set-c-int64_t! p offset value))
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((equal? type 'uint64) (pointer-set-c-uint64_t! p offset value))
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((equal? type 'intptr) (pointer-set-c-intptr_t! p offset value))
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((equal? type 'uintptr) (pointer-set-c-uintptr_t! p offset value))
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((equal? type 'char) (pointer-set-c-char! p offset value))
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((equal? type 'short) (pointer-set-c-short! p offset value))
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((equal? type 'unsigned-short) (pointer-set-c-unsigned-short! p offset value))
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((equal? type 'int) (pointer-set-c-int! p offset value))
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((equal? type 'unsigned-int) (pointer-set-c-unsigned-int! p offset value))
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((equal? type 'long) (pointer-set-c-long! p offset value))
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((equal? type 'unsigned-long) (pointer-set-c-unsigned-long! p offset value))
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((equal? type 'float) (pointer-set-c-float! p offset value))
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((equal? type 'double) (pointer-set-c-double! p offset value))
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((equal? type 'void) (pointer-set-c-void*! p offset value))))))))
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(define pffi-pointer-get
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(lambda (pointer type offset)
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(cond-expand
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(sagittarius
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(let ((p pointer)
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(native-type (pffi-type->native-type type)))
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(cond ((equal? native-type 'int8_t) (pointer-ref-c-int8_t p offset))
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((equal? native-type 'uint8_t) (pointer-ref-c-uint8_t p offset))
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((equal? native-type 'int16_t) (pointer-ref-c-int16_t p offset))
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((equal? native-type 'uint16_t) (pointer-ref-c-uint16_t p offset))
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((equal? native-type 'int32_t) (pointer-ref-c-int32_t p offset))
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((equal? native-type 'uint32_t) (pointer-ref-c-uint32_t p offset))
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((equal? native-type 'int64_t) (pointer-ref-c-int64_t p offset))
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((equal? native-type 'uint64_t) (pointer-ref-c-uint64_t p offset))
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((equal? native-type 'intptr_t) (pointer-ref-c-intptr_t p offset))
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((equal? native-type 'uintptr_t) (pointer-ref-c-uintptr_t p offset))
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((equal? native-type 'char) (pointer-ref-c-char p offset))
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((equal? native-type 'short) (pointer-set-c-short p offset value))
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((equal? native-type 'unsigned-short) (pointer-ref-c-unsigned-short p offset))
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((equal? native-type 'int) (pointer-ref-c-int p offset))
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((equal? native-type 'unsigned-int) (pointer-ref-c-unsigned-int p offset))
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((equal? native-type 'long) (pointer-ref-c-long p offset))
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((equal? native-type 'unsigned-long) (pointer-ref-c-unsigned-long p offset))
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((equal? native-type 'float) (pointer-ref-c-float p offset))
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((equal? native-type 'double) (pointer-ref-c-double p offset))
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((equal? native-type 'void*) (pointer-ref-c-void* p offset))))))))
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(define pffi-pointer-deref
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(lambda (pointer offset)
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(cond-expand (sagittarius (deref pointer offset)))))))
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