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51 lines
1.6 KiB
Scheme
51 lines
1.6 KiB
Scheme
;;;; Cyclone Scheme
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;;;; https://github.com/justinethier/cyclone
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;;;;
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;;;; Copyright (c) 2014-2016, Justin Ethier
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;;;; All rights reserved.
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;;;;
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;;;; This module contains the process-context r7rs.
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;;;;
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(define-library (scheme process-context)
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(export
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command-line
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;exit - not needed because already defined as a primitive, at least for now
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emergency-exit
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get-environment-variable
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; TODO: get-environment-variables
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)
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(begin
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(define emergency-exit exit)
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(define-c command-line
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"(void *data, int argc, closure _, object k)"
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;; TODO: consolidate with Cyc_command_line_arguments from runtime.c
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" int i;
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object lis = nil;
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for (i = _cyc_argc; i > 0; i--) {
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object ps = alloca(sizeof(string_type));
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object pl = alloca(sizeof(cons_type));
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make_string(s, _cyc_argv[i - 1]);
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memcpy(ps, &s, sizeof(string_type));
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((list)pl)->hdr.mark = gc_color_red;
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((list)pl)->hdr.grayed = 0;
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((list)pl)->tag = cons_tag;
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((list)pl)->cons_car = ps;
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((list)pl)->cons_cdr = lis;
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lis = pl;
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}
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return_closcall1(data, k, lis); ")
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(define-c get-environment-variable
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"(void *data, int argc, closure _, object k, object env_var)"
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;; TODO: consolidate with Cyc_command_line_arguments from runtime.c
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"
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const char *v = NULL;
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Cyc_check_str(data, env_var);
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v = getenv(string_str(env_var));
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if (v == NULL) {
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return_closcall1(data, k, boolean_f);
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} else {
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make_string(str, v);
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return_closcall1(data, k, &str);
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}
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")
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))
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