qzdoom/tools/re2c/main.cc

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/* $Id: main.cc,v 1.10 2004/05/13 03:47:52 nuffer Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#elif _WIN32
#include "configwin.h"
#endif
#include <fstream>
#include <iostream>
#include <stdlib.h>
#include <string.h>
#include "globals.h"
#include "parser.h"
#include "dfa.h"
#include "mbo_getopt.h"
char *fileName = 0;
char *outputFileName = 0;
bool sFlag = false;
bool bFlag = false;
unsigned int oline = 1;
using namespace std;
static char *opt_arg = NULL;
static int opt_ind = 1;
static const mbo_opt_struct OPTIONS[] = {
{'?', 0, "help"},
{'b', 0, "bit-vectors"},
{'e', 0, "ecb"},
{'h', 0, "help"},
{'s', 0, "nested-ifs"},
{'o', 1, "output"},
{'v', 0, "version"}
};
static void usage()
{
cerr << "usage: re2c [-esbvh] file\n"
"\n"
"-? -h --help Display this info.\n"
"\n"
"-b --bit-vectors Implies -s. Use bit vectors as well in the attempt to\n"
" coax better code out of the compiler. Most useful for\n"
" specifications with more than a few keywords (e.g. for\n"
" most programming languages).\n"
"\n"
"-e --ecb Cross-compile from an ASCII platform to\n"
" an EBCDIC one.\n"
"\n"
"-s --nested-ifs Generate nested ifs for some switches. Many compilers\n"
" need this assist to generate better code.\n"
"\n"
"-o --output=output Specify the output file instead of stdout\n"
"\n"
"-v --version Show version information.\n";
}
int main(int argc, char *argv[])
{
int c;
fileName = NULL;
if (argc == 1) {
usage();
return 2;
}
while ((c = mbo_getopt(argc, argv, OPTIONS, &opt_arg, &opt_ind, 0))!=-1) {
switch (c) {
case 'b':
sFlag = true;
bFlag = true;
break;
case 'e':
xlat = asc2ebc;
talx = ebc2asc;
break;
case 's':
sFlag = true;
break;
case 'o':
outputFileName = opt_arg;
break;
case 'v':
cerr << "re2c " << PACKAGE_VERSION << "\n";
return 2;
case 'h':
case '?':
default:
usage();
return 2;
}
}
if (argc == opt_ind + 1)
{
fileName = argv[opt_ind];
}
else
{
usage();
return 2;
}
// set up the input stream
istream* input = 0;
ifstream inputFile;
if (fileName[0] == '-' && fileName[1] == '\0')
{
fileName = "<stdin>";
input = &cin;
}
else
{
inputFile.open(fileName);
if (!inputFile)
{
cerr << "can't open " << fileName << "\n";
return 1;
}
input = &inputFile;
}
// set up the output stream
ostream* output = 0;
ofstream outputFile;
if (outputFileName == 0 || (fileName[0] == '-' && fileName[1] == '\0'))
{
outputFileName = "<stdout>";
output = &cout;
}
else
{
outputFile.open(outputFileName);
if (!outputFile)
{
cerr << "can't open " << outputFileName << "\n";
return 1;
}
output = &outputFile;
}
parse(*input, *output);
return 0;
}