107 lines
2.5 KiB
C++
107 lines
2.5 KiB
C++
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/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of zig, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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#include "config.h"
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#include "util.hpp"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <limits.h>
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#include <stdint.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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struct Buf {
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int len;
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char ptr[0];
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};
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static Buf *alloc_buf(int size) {
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Buf *buf = (Buf *)allocate_nonzero<char>(sizeof(Buf) + size + 1);
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buf->len = size;
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buf->ptr[buf->len] = 0;
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return buf;
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}
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static int usage(char *arg0) {
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fprintf(stderr, "Usage: %s --output outfile code.zig\n"
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"Other options:\n"
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"--version print version number and exit\n"
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, arg0);
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return EXIT_FAILURE;
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}
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static struct Buf *fetch_file(FILE *f) {
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int fd = fileno(f);
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struct stat st;
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if (fstat(fd, &st))
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zig_panic("unable to stat file: %s", strerror(errno));
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off_t big_size = st.st_size;
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if (big_size > INT_MAX)
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zig_panic("file too big");
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int size = (int)big_size;
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Buf *buf = alloc_buf(size);
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size_t amt_read = fread(buf->ptr, 1, buf->len, f);
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if (amt_read != (size_t)buf->len)
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zig_panic("error reading: %s", strerror(errno));
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return buf;
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}
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int main(int argc, char **argv) {
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char *arg0 = argv[0];
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char *in_file = NULL;
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char *out_file = NULL;
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for (int i = 1; i < argc; i += 1) {
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char *arg = argv[i];
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if (arg[0] == '-' && arg[1] == '-') {
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if (strcmp(arg, "--version") == 0) {
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printf("%s\n", ZIG_VERSION_STRING);
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return EXIT_SUCCESS;
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} else if (i + 1 >= argc) {
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return usage(arg0);
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} else {
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i += 1;
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if (strcmp(arg, "--output") == 0) {
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out_file = argv[i];
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} else {
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return usage(arg0);
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}
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}
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} else if (!in_file) {
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in_file = arg;
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} else {
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return usage(arg0);
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}
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}
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if (!in_file || !out_file)
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return usage(arg0);
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FILE *in_f;
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if (strcmp(in_file, "-") == 0) {
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in_f = stdin;
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} else {
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in_f = fopen(in_file, "rb");
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if (!in_f)
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zig_panic("unable to open %s for reading: %s\n", in_file, strerror(errno));
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}
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struct Buf *in_data = fetch_file(in_f);
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fprintf(stderr, "%s\n", in_data->ptr);
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//tokenize(in_data);
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return EXIT_SUCCESS;
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}
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