88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
/**
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* See Copyright Notice in picrin.h
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*/
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#include "picrin.h"
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#include "picrin/extra.h"
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#include <stdio.h>
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PIC_NORETURN static void
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file_error(pic_state *pic, const char *msg)
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{
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pic_raise(pic, pic_make_error(pic, "file", msg, pic_nil_value(pic)));
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}
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static pic_value
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open_file(pic_state *pic, const char *fname, const char *mode)
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{
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FILE *fp;
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if ((fp = fopen(fname, mode)) == NULL) {
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file_error(pic, "could not open file...");
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}
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return pic_fopen(pic, fp, mode);
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}
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pic_value
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pic_file_open_input_file(pic_state *pic)
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{
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char *fname;
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pic_get_args(pic, "z", &fname);
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return open_file(pic, fname, "r");
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}
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pic_value
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pic_file_open_output_file(pic_state *pic)
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{
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char *fname;
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pic_get_args(pic, "z", &fname);
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return open_file(pic, fname, "w");
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}
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pic_value
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pic_file_exists_p(pic_state *pic)
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{
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char *fname;
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FILE *fp;
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pic_get_args(pic, "z", &fname);
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fp = fopen(fname, "r");
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if (fp) {
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fclose(fp);
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return pic_true_value(pic);
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} else {
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return pic_false_value(pic);
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}
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}
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pic_value
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pic_file_delete(pic_state *pic)
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{
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char *fname;
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pic_get_args(pic, "z", &fname);
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if (remove(fname) != 0) {
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file_error(pic, "file cannot be deleted");
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}
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return pic_undef_value(pic);
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}
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void
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pic_nitro_init_file(pic_state *pic)
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{
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pic_defun(pic, "scheme.base:open-input-file", pic_file_open_input_file); /* for `include' */
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pic_defun(pic, "scheme.file:open-input-file", pic_file_open_input_file);
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pic_defun(pic, "scheme.file:open-binary-input-file", pic_file_open_input_file);
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pic_defun(pic, "scheme.file:open-output-file", pic_file_open_output_file);
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pic_defun(pic, "scheme.file:open-binary-output-file", pic_file_open_output_file);
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pic_defun(pic, "scheme.file:file-exists?", pic_file_exists_p);
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pic_defun(pic, "scheme.file:delete-file", pic_file_delete);
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}
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