nrepl.c

1. #includes notcurses_s7.c (the libnotcurses s7 API)

2. embeds stuff extracted from libc_s7.c:

   • c definitions (with s7__ or g_ prefix) for: getenv, time, localtime, time_make, strftime, isatty, fileno, fgets, strlen, c_pointer_to_string, calloc, glob_free, glob_make, glob, glob_gl_pathv

3. init_nlibc()

   • provides s7 definitions for the above (plus constants like GLOB_MARK etc.)

   • defines *nlibc*

4. main calls:

   • sc = s7_init()

   • init_nlibc(sc)

   • notcurses_s7_init(sc)

   • loads nrepl.scm, which

     • defines libc-let, which is used in defn of nrepl below

       • if *nlibc* defined, returns it, else requires libc.scm and returns *libc*

         so libc-let is bound to either
         * the subset of libc defined above (as *nlibc*)  in nrepl.c
         * or the entire *libc* (libc_s7.so) library

     • loads notcurses_s7.so if *notcurses* is undefined (it is defined by notcurses_s7_init in notcurses_s7.c)

     • autoloads a bunch of libs, e.g. (autoload 'trace "debug.scm")`

       • including libc.scm, libm.scm, libgsl.scm, which use cload

     • finally, if *nrepl* is defined, returns it

     • if *nrepl* NOT defined:

       • defines *nrepl* (using *nlibc* defined above as context for some defns)

       • runs nrepl: start, run, stop

So loading nrepl.scm suffices to run the nrepl; we do not load it and then run it.

It could be loaded by something other than nrepl.c.

(call-with-output-file "nrepl-bits.h" (lambda (op) (call-with-input-file "nrepl.scm" (lambda (ip) (format op "unsigned char nrepl_scm[] = {~% ") (do c (read-char ip) (read-char ip (i 0 (+ i 1))) eof-object? c) (format op "0};~%unsigned int nrepl_scm_len = _D;%" i ; the C string length, not the array length (format op "0x~X, " (char→integer c)) (if (char=? c #\newline) (format op "~% ")))))))

C23 now has #embed to handle this case

• all APIs and libs compiled separately; no use of cload.scm to generate and compile code. In particular:

  • nrepl.c does not #include notcurses_s7.c, which is compiled separately as libnotcurses_s7.a.

  • the sources for *nlibc* are moved out of nrepl.c into a standalone file, nrepl_nlibc.c.

• loading nrepl.scm just loads stuff, it does not launch the repl

• no autoloading of libX.scm files - they’re only needed when cload.scm is being used

• client loading nrepl.scm is responsible for launcing the repl

These changes require so modifications of the sources:

• nrepl.c:

  • remove #include "notcurses_s7.c"

  • move all *nlibc* code to nrepl_nlibc.c

  • add calls to initialize *libc*, *libm*, *libgsl*

• nrepl.scm

  • do not autoload libc, libm, libgsl - they’re loaded and initialized by default

  • disable code that runs the repl

We also use //vendored/logc so we #include log.h.

Initializing libX clibs/link: