X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=incore.lsp;h=2847b54fb101dae94412b1c0504cbf18c54cd204;hb=c6d3a0b36a69445ab93993b92ec73b090ed8c156;hp=6ba256198cc8158007440ddc5490bb8eec7ea971;hpb=3dcbdf45070be29c4dec5217bcb141d8ee96ac47;p=rrq%2Fnewlisp%2Fpacknl.git

diff --git a/incore.lsp b/incore.lsp
index 6ba2561..2847b54 100644
--- a/incore.lsp
+++ b/incore.lsp
@@ -8,39 +8,65 @@
 ;;
 ;; archives:archives is a hashmap for loadable files
 ;; core:core is the running binary file
-;; archive:main is the name of the first on-core member
-;; archive:incore is the byte position into core for the archive
+;;
+;; The "archive" context holds utility code.
+;; archive:main is the name of the first in-core member.
+;; archive:incore is the byte position into core for the archive.
+;;
+;; Use (archives member pathname) to register that the file "member"
+;; should be looked up in the ar style archive of the given pathname.
+;;
+;; Use (archive pathname) to register all members of the nominated ar
+;; style archive.
 
+;; This is a hashmap of loaded files
 (new Tree 'archives)
 
-(define core:core (read-file (main-args 0)))
+;; A copy of the executable
+(define core:core (read-file "/proc/self/exe"))
 
 (context 'archive)
 
 (setf main nil)
 
-(constant 'AR "/usr/bin/ar")
+(constant 'AR "/usr/bin/ar" 'TAR "/bin/tar" 'FILE "/usr/bin/file")
+
+(define (tar-able PATH)
+  (when (file? FILE)
+    (if (exec (format "%s -Z %s" FILE PATH))
+        (find " tar archive" ($it 0)))))
 
+;; Install indexes for all members of the given archive file
 (define (archive:archive PATH)
   ;;(write-line 2 (string (list 'archive PATH)))
   (map (fn (F) (archives F PATH) F)
-       (exec (format "%s t %s" AR PATH))))
+       (if (directory? PATH) (directory PATH "^[^.]")
+         (ends-with PATH ".a") (exec (format "%s t %s" AR PATH))
+         (tar-able PATH) (exec (format "%s tf %s" TAR PATH))
+         '()
+         )))
 
-(define (get-ar PATH MEMBER)
-  ;;(write-line 2 (string (list 'get-ar PATH MEMBER)))
+;; Read a member of an external archive
+(define (get-stdout CMD)
   (let ((I (pipe)) (O (pipe)) (DATA "") (ALL "")
         (SUB (fn (I O)
-               (close (I 1)) (close (O 0)) (close 0)
-               (process (format "%s p %s %s" AR PATH MEMBER) (I 0) (O 1)))))
+               (map close (list (I 1) (O 0) 0))
+               (process CMD (I 0) (O 1)))))
     (fork (SUB I O))
     (close (O 1)) (close (I 0)) (close (I 1))
     (while (> (or (read (O 0) DATA 1000000) 0)) (extend ALL DATA))
     (close (I 0))
     ALL))
 
+;; Read an archive member. The given PATH is either a string path for
+;; an external archive file or the (position length) list for an
+;; incore packaged member.
 (define (get PATH MEMBER)
   (if (list? PATH) ((PATH 0) (PATH 1) core)
-    (ends-with PATH ".a") (get-ar PATH MEMBER)))
+    (directory? PATH) (read-file (format "%s/%s" PATH MEMBER))
+    (ends-with PATH ".a") (get-stdout (format "%s p %s %s" AR PATH MEMBER))
+    (tar-able PATH) (get-stdout (format "%s xOf %s %s" TAR PATH MEMBER))
+    ))
 
 ;; Discover and load an in-core archive by means of a marker row of 40
 ;; "x", and then a series of pathname\nsize\nbytes[size] members.
@@ -59,17 +85,17 @@
 
 (constant
    'load
-   (letex (LOAD load)
+   (letex ((LOAD load) (CTX '(if (1 (args)) (args 1)) MAIN))
      (fn () (if (archives (args 0))
-                (eval-string (archive:get $it (args 0)) MAIN)
-              (LOAD (args 0)))))
+                (eval-string (archive:get $it (args 0)) CTX)
+              (LOAD (args 0) CTX))))
    'read-file
-   (letex (READ-FILE read-file)
+   (letex ((READ-FILE read-file) (CTX '(if (1 (args)) (args 1)) MAIN))
      (fn ()
-       (if (archives (args 0)) (archive:get $it (args 0))
-              (READ-FILE (args 0)))))
+       (if (archives (args 0)) (archive:get $it (args 0) CTX)
+         (READ-FILE (args 0)))))
    'file?
-   (letex (FILE? file?)
+   (letex ((FILE? file?))
      (fn () (if (archives (args 0)) true (FILE? (args 0)))))
    )