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#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "errors.h"
#include "lexer.h"
static char *readfile(const char *, size_t *);
int
main(int argc, char **argv)
{
if (argc != 2) {
fputs("Usage: oryx file\n", stderr);
exit(EXIT_FAILURE);
}
struct {
char *p;
size_t len;
} file;
file.p = readfile(argv[1], &file.len);
struct lexemes_soa toks = lexstring(file.p, file.len);
for (size_t i = 0; i < toks.len; i++) {
switch (toks.kinds[i]) {
case LEXIDENT: {
struct strview sv = toks.strs[i];
printf("Identifier: ‘%.*s’\n", (int)sv.len, sv.p);
break;
}
case LEXAMP:
puts("Ampersand");
break;
case LEXCOLON:
puts("Colon");
break;
case LEXEQ:
puts("Equals");
break;
case LEXLANGL:
puts("Left angle bracket");
break;
case LEXLBRACE:
puts("Left brace");
break;
case LEXLBRKT:
puts("Right bracket");
break;
case LEXLPAR:
puts("Left parenthesis");
break;
case LEXMINUS:
puts("Minus");
break;
case LEXPIPE:
puts("Pipe");
break;
case LEXPLUS:
puts("Plus");
break;
case LEXRANGL:
puts("Right angle bracket");
break;
case LEXRBRACE:
puts("Right brace");
break;
case LEXRBRKT:
puts("Right bracket");
break;
case LEXRPAR:
puts("Right parenthesis");
break;
case LEXSEMI:
puts("Semicolon");
break;
case LEXSLASH:
puts("Slash");
break;
case LEXSTAR:
puts("Asterisk");
break;
case LEXTILDE:
puts("Tilde");
break;
}
}
#if DEBUG
free(file.p);
lexemes_free(toks);
#endif
return EXIT_SUCCESS;
}
char *
readfile(const char *filename, size_t *n)
{
int fd = open(filename, O_RDONLY);
if (fd == -1)
err("open: %s", filename);
struct stat sb;
if (fstat(fd, &sb) == -1)
err("fstat: %s", filename);
char *p = malloc(sb.st_size + 4);
if (p == NULL)
err("malloc:");
ssize_t nr;
for (size_t off = 0; (nr = read(fd, p + off, sb.st_blksize)) > 0; off += nr)
;
if (nr == -1)
err("read: %s", filename);
for (int i = 0; i < 4; i++)
p[sb.st_size + i] = 0;
*n = sb.st_size;
close(fd);
return p;
}
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