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adding sexp_read_from_string and -e, -p command-line options

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Alex Shinn 2009-03-05 01:24:16 +09:00
parent 598e71c950
commit fde01c5700
3 changed files with 18 additions and 0 deletions
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8
eval.c
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@ -778,7 +778,15 @@ int main (int argc, char **argv) {
for (i=1; i < argc && argv[i][0] == '-'; i++) {
switch (argv[i][1]) {
case 'e':
case 'p':
obj = sexp_read_from_string(argv[i+1]);
res = eval_in_stack(obj, e, stack, 0);
if (argv[i][1] == 'p') {
sexp_write(res, cur_output_port);
sexp_write_char('\n', cur_output_port);
}
quit=1;
i++;
break;
default:
errx(1, "unknown option: %s", argv[i]);

9
sexp.c
View file

@ -753,6 +753,15 @@ sexp sexp_read (sexp in) {
return res;
}
sexp sexp_read_from_string(char *str) {
sexp s = sexp_make_string(str);
sexp in = sexp_make_input_string_port(s);
sexp res = sexp_read(in);
sexp_free(s);
sexp_free(in);
return res;
}
void sexp_init() {
if (! sexp_initialized_p) {
sexp_initialized_p = 1;

1
sexp.h
View file

@ -232,6 +232,7 @@ char* sexp_read_symbol(sexp in, int init);
sexp sexp_read_number(sexp in, int base);
sexp sexp_read_raw(sexp in);
sexp sexp_read(sexp in);
sexp sexp_read_from_string(char *str);
sexp sexp_make_input_port(FILE* in);
sexp sexp_make_output_port(FILE* out);
sexp sexp_make_input_string_port(sexp str);