135 lines
2.4 KiB
C
135 lines
2.4 KiB
C
/**
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* See Copyright Notice in picrin.h
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*/
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#include <stdlib.h>
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#include "picrin.h"
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#include "picrin/string.h"
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#include "picrin/pair.h"
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#include "picrin/cont.h"
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static pic_value
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pic_system_cmdline(pic_state *pic)
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{
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pic_value v = pic_nil_value();
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int i;
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pic_get_args(pic, "");
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for (i = 0; i < pic->argc; ++i) {
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size_t ai = pic_gc_arena_preserve(pic);
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v = pic_cons(pic, pic_obj_value(pic_str_new_cstr(pic, pic->argv[i])), v);
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pic_gc_arena_restore(pic, ai);
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}
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return pic_reverse(pic, v);
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}
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static pic_value
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pic_system_exit(pic_state *pic)
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{
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pic_value v;
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int argc, status = EXIT_SUCCESS;
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argc = pic_get_args(pic, "|o", &v);
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if (argc == 1) {
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switch (pic_type(v)) {
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case PIC_TT_FLOAT:
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status = (int)pic_float(v);
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break;
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case PIC_TT_INT:
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status = pic_int(v);
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break;
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default:
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break;
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}
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}
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pic_close(pic);
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exit(status);
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}
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static pic_value
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pic_system_emergency_exit(pic_state *pic)
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{
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pic_value v;
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int argc, status = EXIT_FAILURE;
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argc = pic_get_args(pic, "|o", &v);
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if (argc == 1) {
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switch (pic_type(v)) {
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case PIC_TT_FLOAT:
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status = (int)pic_float(v);
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break;
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case PIC_TT_INT:
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status = pic_int(v);
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break;
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default:
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break;
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}
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}
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_Exit(status);
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}
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static pic_value
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pic_system_getenv(pic_state *pic)
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{
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char *str, *val;
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pic_get_args(pic, "z", &str);
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val = getenv(str);
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if (val == NULL)
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return pic_nil_value();
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else
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return pic_obj_value(pic_str_new_cstr(pic, val));
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}
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static pic_value
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pic_system_getenvs(pic_state *pic)
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{
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char **envp;
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pic_value data = pic_nil_value();
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size_t ai = pic_gc_arena_preserve(pic);
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pic_get_args(pic, "");
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if (! pic->envp) {
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return pic_nil_value();
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}
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for (envp = pic->envp; *envp; ++envp) {
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pic_str *key, *val;
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int i;
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for (i = 0; (*envp)[i] != '='; ++i)
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;
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key = pic_str_new(pic, *envp, i);
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val = pic_str_new_cstr(pic, getenv(pic_str_cstr(key)));
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/* push */
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data = pic_acons(pic, pic_obj_value(key), pic_obj_value(val), data);
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, data);
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}
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return data;
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}
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void
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pic_init_system(pic_state *pic)
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{
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pic_defun(pic, "command-line", pic_system_cmdline);
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pic_defun(pic, "exit", pic_system_exit);
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pic_defun(pic, "emergency-exit", pic_system_emergency_exit);
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pic_defun(pic, "get-environment-variable", pic_system_getenv);
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pic_defun(pic, "get-environment-variables", pic_system_getenvs);
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}
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