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#include <sys/stat.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <builder.h>
#include <da.h>
#include "assembler.h"
#include "cerr.h"
#include "common.h"
#include "lexer.h"
#include "macros.h"
#include "parser.h"
static void asmfile(int, const char *);
size_t filesize;
const char *filename;
const char8_t *baseptr;
int
main(int argc, char **argv)
{
int opt;
const struct option longopts[] = {
{"help", no_argument, nullptr, 'h'},
{nullptr, no_argument, nullptr, 0 },
};
cerrinit(*argv);
while ((opt = getopt_long(argc, argv, "h", longopts, nullptr)) != -1) {
switch (opt) {
case 'h':
execlp("man", "man", "1", argv[0], nullptr);
die("execlp: man 1 %s", argv[0]);
default:
fprintf(stderr, "Usage: %s [file ...]\n", argv[0]);
exit(EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
if (!argc)
asmfile(STDIN_FILENO, "-");
for (int i = 0; i < argc; i++) {
if (streq("-", argv[i]))
asmfile(STDIN_FILENO, "-");
else {
int fd;
if ((fd = open(argv[i], O_RDONLY)) == -1)
die("open: %s", argv[i]);
asmfile(fd, argv[i]);
close(fd);
}
}
return EXIT_SUCCESS;
}
void
asmfile(int fd, const char *fn)
{
char *buf;
size_t blksize;
ssize_t nr;
struct ast ast;
struct stat st;
struct u8str sb;
struct tokens toks;
filename = fn;
if (fstat(fd, &st) == -1)
die("fstat: %s", filename);
blksize = MAX(st.st_blksize, BUFSIZ);
if (!(buf = malloc(blksize)))
die("malloc");
/* Load the contents of the file into sb */
u8strinit(&sb, S_ISREG(st.st_mode) ? (size_t)st.st_size : blksize);
while ((nr = read(fd, buf, blksize)) > 0) {
struct u8view v = {
.p = buf,
.len = nr,
};
if (!u8strpush(&sb, v))
die("u8strpush");
}
if (nr == -1)
die("read: %s", filename);
free(buf);
filesize = sb.len;
baseptr = u8strfit(&sb)->p;
assemble(stdout, ast = parsefile(toks = lexfile(u8strtou8(sb))));
free(toks.buf);
free(ast.buf);
u8strfree(sb);
}
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