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29 Commits

Author SHA1 Message Date
Lassi Kortela fabd2503fa Remove vestigial path.exist? procedure 2019-09-02 19:47:19 +03:00
Lassi Kortela 5f53326df8 Replace path.exists? with file-exists? in C 2019-09-02 19:46:27 +03:00
Lassi Kortela 78b663d41d Add help and colored banner 
- (help ...) is a macro that quotes everything to be user-friendly
- (help* ...) is the equivalent procedure
- When the user types just `help` or `exit`, the REPL shows a hint
  that they are probably looking for `(help)` or `(exit)`.
 2019-08-28 14:07:50 +03:00
Lassi Kortela 40ba694ea6 Make environment variable procedures match R7RS 2019-08-28 12:49:10 +03:00
Lassi Kortela e5813fe5c9 Add directory listing primitives from SRFI 170 draft 
TODO: 'dotfiles?' flag and 'directory-files' procedure
 2019-08-28 11:11:55 +03:00
Lassi Kortela a02557230b Consolidate (almost) all #include's into new "scheme.h" 2019-08-26 22:12:15 +03:00
Lassi Kortela 924a45b7bd Implement Scheme printer procedures in C 2019-08-25 22:39:35 +03:00
Lassi Kortela b2027fe023 Split setenv/unsetenv by platform 
Windows apparently doesn't have unsetenv() at all, so use the WinAPI
native envar functions instead of the usual C ones.
 2019-08-21 22:16:07 +03:00
Lassi Kortela 60ff06fb6d Reorganize error functions and includes 
These functions are complicated because they need to be marked
"noreturn" for the compiler. There are several fundamentally
incompatible ways of doing that. Since we have only a few "noreturn"
functions, let's just list all of those in one header file of which
there is a completely different version for each compiler.
 2019-08-21 22:06:13 +03:00
Lassi Kortela e2dffd97fe Remove time.now and parsetime functions 2019-08-19 01:15:28 +03:00
Lassi Kortela 023937e5ea Use backward compatible variable initializers 2019-08-19 01:14:09 +03:00
Lassi Kortela 7025b8cd32 Split fl_path_exists() into Unix and Windows 2019-08-18 13:39:08 +03:00
Lassi Kortela a6ecac95e1 Rename fs*.c -> os*.c 
I planned to put just the file system routines into these files, but
there are starting to be so many of them that I don't want to
duplicate the same set for networking, subprocesses etc.
 2019-08-14 01:15:29 +03:00
Lassi Kortela 277abddaa8 Turn (import ...) into a macro to match Scheme syntax 2019-08-12 18:18:46 +03:00
Lassi Kortela 3b13e81eae Add concept of built-in libraries and (import) statement 
R7RS syntax is: (import (library name here))

We translate this into the internal path "library/name/here". This will allow
us to easily load libraries from files later on by appending the ".sld" file
name extension.
 2019-08-11 22:32:55 +03:00
Lassi Kortela e9d6ca265c Unify preprocessor checks for win32 
<https://sourceforge.net/p/predef/wiki/OperatingSystems/> says that _WIN32 is
always defined for both 32-bit and 64-bit versions of Windows.
 2019-08-10 00:12:33 +03:00
Lassi Kortela 267cd00146 Remove unnecessary ifdef about unsetenv() return value 
Posix now mandates that unsetenv() must return -1 and set errno on error.
 2019-08-10 00:05:31 +03:00
Lassi Kortela a28aff6892 Add missing stdint.h includes 2019-08-09 23:25:20 +03:00
Lassi Kortela 1d96278313 Break down dirpath.c into fs_*.c by OS 
I much prefer this to using ifdefs. Requires a little help from the build
system but I find it worth it.
 2019-08-09 23:12:19 +03:00
Lassi Kortela 99feb308bd Hoist argcount() into its own header file 
Muffles compiler warnings about unused function.
 2019-08-09 22:08:44 +03:00
Lassi Kortela e19fe0b8bd Remove time.string and time.fromstring builtins 
They are of dubious value, and the C implementation uses #if.
 2019-08-09 21:50:52 +03:00
Lassi Kortela d6a4029dde Replace idiosyncratic C types with standard ones 
For number types, we rely on classic C types (char, short, int, long) to be
the correct sizes. For precise bit widths, use standard intN_t and uintN_t.
For size_t, just use system size_t.
 2019-08-09 21:00:03 +03:00
Lassi Kortela fe4550dad7 Replace cvalue_t with struct 2019-08-09 19:36:20 +03:00
Lassi Kortela c9f5e4faeb Replace symbol_t with struct 2019-08-09 19:30:15 +03:00
Lassi Kortela 193ced5e73 Replace cons_t with struct 2019-08-09 19:28:14 +03:00
Lassi Kortela d6f1579e17 Replace cprim_t with struct 2019-08-09 19:26:48 +03:00
Lassi Kortela 428e7a3825 Replace builtinspec_t with struct 2019-08-09 19:26:48 +03:00
Lassi Kortela 79d44c0780 Get rid of almost all recursive includes 
Simple rule: include files should never include include files.

"Notes on Programming in C", Rob Pike, February 21, 1989
<https://www.lysator.liu.se/c/pikestyle.html>
 2019-08-09 19:00:17 +03:00
Lassi Kortela d6f54bc13c Consolidate all C files into a "c" subdirectory 2019-08-09 15:02:58 +03:00