climp

 1#include <stdio.h>
 2#include <stdlib.h>
 3#include <semaphore.h>
 4#include <pthread.h>
 5#include <unistd.h>
 6
 7#include <sys/types.h>
 8#include <sys/stat.h>
 9#include <sys/queue.h>
10
11#include "env.h"
12#include "scanner.h"
13#include "parser.h"
14#include "eval.h"
15#include "util.h"
16
17enum {
18	VARTBLSIZ = 512,
19};
20
21int
22evalstr(char *input)
23{
24	int r = 1;
25	env *vars;
26	evalerr ret;
27	statement **cmds, *err = emalloc(sizeof(statement));
28	parser *par;
29
30	par = newpar(input);
31	if (!(cmds = parseprog(par, err))) {
32		if (err->d.error.line > 0)
33			fprintf(stderr, "Parser error in line %d: %s\n",
34					err->d.error.line, err->d.error.msg);
35		else
36			fprintf(stderr, "Parser error: %s\n", err->d.error.msg);
37
38		freestmt(err);
39		goto err;
40	} else {
41		free(err);
42	}
43
44	vars = newenv(VARTBLSIZ);
45	if ((ret = eval(vars, cmds)) != EVAL_OK) {
46		fprintf(stderr, "Runtime error: %d\n", ret);
47		goto err;
48	}
49
50	r = 0;
51	freeenv(vars);
52
53err:
54	freestmts(cmds);
55	freepar(par);
56	return r;
57}
58
59int
60main(int argc, char **argv)
61{
62	int ret;
63	FILE *fd;
64	char *input, *fp = argv[1];
65	struct stat st;
66
67	if (argc <= 1)
68		return 1;
69
70	if (stat(fp, &st))
71		die("stat failed");
72	else
73		input = emalloc(st.st_size + 1);
74
75	if (!(fd = fopen(fp, "r")))
76		die("fopen failed");
77	if (fread(input, sizeof(char), st.st_size, fd) != st.st_size)
78		die("short read");
79
80	if (fclose(fd))
81		die("fclose failed");
82
83	input[st.st_size] = '\0';
84	ret = evalstr(input);
85
86	free(input);
87	return ret;
88}