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/*
** $Id: luac.c,v 1.17 1999/07/02 19:34:26 lhf Exp $
** lua compiler (saves bytecodes to files; also list binary files)
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "luac.h"
#include "lparser.h"
#include "lstate.h"
#include "lzio.h"
#define OUTPUT "luac.out" /* default output file */
static FILE* efopen(char* name, char* mode);
static void doit(int undump, char* filename);
static int listing=0; /* list bytecodes? */
static int debugging=0; /* emit debug information? */
static int dumping=1; /* dump bytecodes? */
static int undumping=0; /* undump bytecodes? */
static int optimizing=0; /* optimize? */
static int parsing=0; /* parse only? */
static int testing=0; /* test integrity? */
static int verbose=0; /* tell user what is done */
static int native=0; /* save numbers in native format? */
static FILE* D; /* output file */
static void usage(char* op)
{
if (op) fprintf(stderr,"luac: unrecognized option '%s'\n",op);
fprintf(stderr,
"usage: luac [options] [filenames]. Available options are:\n"
" -c\t\tcompile (default)\n"
" -d\t\tgenerate debugging information\n"
" -D name\tpredefine 'name' for conditional compilation\n"
" -l\t\tlist (default for -u)\n"
" -n\t\tsave numbers in native format (file may not be portable)\n"
" -o file\toutput file for -c (default is \"" OUTPUT "\")\n"
" -O\t\toptimize\n"
" -p\t\tparse only\n"
" -q\t\tquiet (default for -c)\n"
" -t\t\ttest code integrity\n"
" -u\t\tundump\n"
" -U name\tundefine 'name' for conditional compilation\n"
" -v\t\tshow version information\n"
" -V\t\tverbose\n"
" -\t\tcompile \"stdin\"\n"
);
exit(1);
}
#define IS(s) (strcmp(argv[i],s)==0)
int main(int argc, char* argv[])
{
char* d=OUTPUT; /* output file name */
int i;
lua_open();
for (i=1; i<argc; i++)
{
if (argv[i][0]!='-') /* end of options */
break;
else if (IS("-")) /* end of options; use stdin */
break;
else if (IS("-c")) /* compile (and dump) */
{
dumping=1;
undumping=0;
}
else if (IS("-D")) /* $define */
{
TaggedString* s=luaS_new(argv[++i]);
s->u.s.globalval.ttype=LUA_T_NUMBER;
s->u.s.globalval.value.n=1;
}
else if (IS("-d")) /* debug */
debugging=1;
else if (IS("-l")) /* list */
listing=1;
else if (IS("-n")) /* native */
native=1;
else if (IS("-o")) /* output file */
d=argv[++i];
else if (IS("-O")) /* optimize */
optimizing=1;
else if (IS("-p")) /* parse only */
{
dumping=0;
parsing=1;
}
else if (IS("-q")) /* quiet */
listing=0;
else if (IS("-t")) /* test */
testing=1;
else if (IS("-u")) /* undump */
{
dumping=0;
undumping=1;
listing=1;
}
else if (IS("-U")) /* undefine */
{
TaggedString* s=luaS_new(argv[++i]);
s->u.s.globalval.ttype=LUA_T_NIL;
}
else if (IS("-v")) /* show version */
printf("%s %s\n(written by %s)\n\n",LUA_VERSION,LUA_COPYRIGHT,LUA_AUTHORS);
else if (IS("-V")) /* verbose */
verbose=1;
else /* unknown option */
usage(argv[i]);
}
--i; /* fake new argv[0] */
argc-=i;
argv+=i;
if (dumping || parsing)
{
if (argc<2) usage(NULL);
if (dumping)
{
for (i=1; i<argc; i++) /* play safe with output file */
if (IS(d)) luaL_verror("will not overwrite input file \"%s\"",d);
D=efopen(d,"wb"); /* must open in binary mode */
}
for (i=1; i<argc; i++) doit(0,IS("-")? NULL : argv[i]);
if (dumping) fclose(D);
}
if (undumping)
{
if (argc<2)
doit(1,OUTPUT);
else
for (i=1; i<argc; i++) doit(1,IS("-")? NULL : argv[i]);
}
return 0;
}
static void do_compile(ZIO* z)
{
TProtoFunc* Main;
if (optimizing) L->debug=0;
if (debugging) L->debug=1;
Main=luaY_parser(z);
if (optimizing) luaU_optchunk(Main);
if (listing) luaU_printchunk(Main);
if (testing) luaU_testchunk(Main);
if (dumping) luaU_dumpchunk(Main,D,native);
}
static void do_undump(ZIO* z)
{
for (;;)
{
TProtoFunc* Main=luaU_undump1(z);
if (Main==NULL) break;
if (optimizing) luaU_optchunk(Main);
if (listing) luaU_printchunk(Main);
if (testing) luaU_testchunk(Main);
}
}
static void doit(int undump, char* filename)
{
FILE* f= (filename==NULL) ? stdin : efopen(filename, undump ? "rb" : "r");
ZIO z;
char source[255+2]; /* +2 for '@' and '\0' */
luaL_filesource(source,filename,sizeof(source));
zFopen(&z,f,source);
if (verbose) fprintf(stderr,"%s\n",source+1);
if (undump) do_undump(&z); else do_compile(&z);
if (f!=stdin) fclose(f);
}
static FILE* efopen(char* name, char* mode)
{
FILE* f=fopen(name,mode);
if (f==NULL)
{
fprintf(stderr,"luac: cannot open %sput file ",mode[0]=='r' ? "in" : "out");
perror(name);
exit(1);
}
return f;
}
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