250 lines
8.4 KiB
Scheme
250 lines
8.4 KiB
Scheme
;> # pffi
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;> ## Procedures
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(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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(retropikzel pffi v0-1-0 sagittarius)))
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(guile
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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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(retropikzel pffi v0-1-0 guile)))
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(racket
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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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(only (racket base) system-type)
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(retropikzel pffi v0-1-0 racket)))
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(stklos
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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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(stklos)
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(retropikzel pffi v0-1-0 stklos)))
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(kawa
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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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(cyclone
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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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(retropikzel pffi v0-1-0 cyclone)))
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(gambit
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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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(retropikzel pffi v0-1-0 gambit)))
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(chicken
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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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(retropikzel pffi v0-1-0 chicken)))
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(chibi
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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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(retropikzel pffi v0-1-0 chibi)))
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(mit-scheme
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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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(retropikzel pffi v0-1-0 mit-scheme))))
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(export pffi-shared-object-auto-load
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pffi-shared-object-load
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pffi-define
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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-free
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pffi-pointer?
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pffi-pointer-null?
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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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;> ## Procedures
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(define platform-file-extension
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(cond-expand
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(racket (if (equal? (system-type 'os) 'windows) ".dll" ".so"))
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(windows ".dll")
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(else ".so")))
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(define platform-version-file-extension
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(cond-expand
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(racket (if (equal? (system-type 'os) 'windows) ".dll" ".so.0"))
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(windows ".dll")
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(else ".so.0")))
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(define platform-lib-prefix
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(cond-expand
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(racket (if (equal? (system-type 'os) 'windows) "" "lib"))
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(windows "")
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(else "lib")))
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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 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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; Guix
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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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"/run/current-system/profile/lib")
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; Debian
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(if (get-environment-variable "LD_LIBRARY_PATH")
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(list (string-split (get-environment-variable "LD_LIBRARY_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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;> ### pffi-shared-object-load
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;>
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;> Arguments:
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;> - path (string) The path to the shared object you want to load, including any "lib" infront and .so/.dll at the end
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;>
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;> Returns:
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;>
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;> ### pffi-shared-object-auto-load
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;>
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;> Arguments:
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;> - object-name (symbol)
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;> - The name of the dynamic library file you want to load without the "lib" in fron of it or .so/.dll at the end
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;> - addition-paths (list (string)...)
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;> - Any additional paths you want to search for the library
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;>
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;> Returns:
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;> - (object) Shared object, the type depends on the implementation
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(define-syntax pffi-shared-object-auto-load
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(syntax-rules ()
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((pffi-shared-object-auto-load headers object-name additional-paths)
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(cond-expand
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(cyclone (pffi-shared-object-load headers))
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(chicken (pffi-shared-object-load headers))
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(gambit (pffi-shared-object-load headers))
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(else
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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
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(string-append path
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"/"
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object-name
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platform-file-extension))
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(object-version-path
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(string-append path
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"/"
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object-name
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platform-version-file-extension))
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(object-lib-path
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(string-append path
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"/"
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platform-lib-prefix
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object-name
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platform-file-extension))
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(object-version-lib-path
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(string-append path
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"/"
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platform-lib-prefix
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object-name
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platform-version-file-extension)))
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(cond
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((file-exists? object-path)
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(set! shared-object (pffi-shared-object-load headers object-path)))
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((file-exists? object-version-path)
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(set! shared-object (pffi-shared-object-load headers object-version-path)))
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((file-exists? object-lib-path)
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(set! shared-object (pffi-shared-object-load headers object-lib-path)))
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((file-exists? object-version-lib-path)
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(set! shared-object (pffi-shared-object-load headers object-version-lib-path)))))))
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paths)
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(if (not shared-object)
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(error "Could not load shared object" object-name)
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shared-object)))))))
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(cond-expand
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(kawa (include "kawa.scm"))
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(else #t))))
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