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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "globals.h"
#include "parse.h"
#include "dfa.h"
#include "mbo_getopt.h"
const char *fileName = 0;
char *outputFileName = 0;
int sFlag = 0;
int bFlag = 0;
int dFlag = 0;
int iFlag = 0;
int bUsedYYAccept = 0;
unsigned int oline = 1;
unsigned int maxFill = 1;
int vFillIndexes = -1;
unsigned char *vUsedLabels;
unsigned int vUsedLabelAlloc = 1000;
static char *opt_arg = NULL;
static int opt_ind = 1;
static const mbo_opt_struct OPTIONS[] = {
{'?', 0, "help"},
{'b', 0, "bit-vectors"},
{'d', 0, "debug-output"},
{'e', 0, "ecb"},
{'f', 0, "storable-state"},
{'h', 0, "help"},
{'i', 0, "no-debug-info"},
{'o', 1, "output"},
{'s', 0, "nested-ifs"},
{'v', 0, "version"},
{'-', 0, NULL} /* end of args */
};
static void usage()
{
fprintf(stderr,
"usage: re2c [-esbvhd] 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");
fprintf(stderr,
" 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");
fprintf(stderr,
"-s --nested-ifs Generate nested ifs for some switches. Many compilers\n"
" need this assist to generate better code.\n"
"\n"
"-f --storable-state Generate a scanner with support for storable state\n"
"\n"
"-o --output=output Specify the output file instead of stdout\n"
"\n");
fprintf(stderr,
"-d --debug-output Creates a parser that dumps information during\n"
" about the current position and in which state the\n"
" parser is.\n"
"\n"
"-i --no-debug-info Do not generate '#line' info (usefull for versioning).\n"
"\n"
"-v --version Show version information.\n"
"-V --vernum Show version as one number.\n");
}
char *
mystrdup(const char *str)
{
size_t len;
char *copy;
len = strlen(str) + 1;
copy = malloc(len);
memcpy(copy, str, len);
return (copy);
}
int main(int argc, char *argv[])
{
int c;
FILE *f, *output;
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 = 1;
bFlag = 1;
break;
case 'e':
xlat = asc2ebc;
talx = ebc2asc;
break;
case 's':
sFlag = 1;
break;
case 'd':
dFlag = 1;
break;
case 'f':
vFillIndexes = 0;
break;
case 'i':
iFlag = 1;
break;
case 'o':
outputFileName = opt_arg;
break;
case 'v':
fputs("re2c " PACKAGE_VERSION "\n", stdout);
break;
case 'V': {
int v1, v2, v3;
sscanf(PACKAGE_VERSION, "%d.%d.%d", &v1, &v2, &v3);
fprintf(stdout, "%02d%02d%02d\n", v1, v2, v3);
return 2;
}
case 'h':
case '?':
default:
usage();
return 2;
}
}
if (argc == opt_ind + 1) {
fileName = argv[opt_ind];
} else {
usage();
return 2;
}
vUsedLabels = calloc(vUsedLabelAlloc, 1);
if (!vUsedLabels) {
fputs("Out of memory.\n", stderr);
return 1;
}
/* set up the input stream */
if(fileName[0] == '-' && fileName[1] == '\0'){
fileName = "<stdin>";
f = stdin;
} else {
if((f = fopen(fileName, "rt")) == NULL){
fprintf(stderr, "can't open %s\n", fileName);
return 1;
}
}
/* set up the output stream */
if (outputFileName == 0 || (fileName[0] == '-' && fileName[1] == '\0')) {
outputFileName = mystrdup("<stdout>");
output = stdout;
} else {
int len;
char *src, *dst, *tmp;
output = fopen(outputFileName, "wt");
if (!output) {
fprintf(stderr, "can't open %s\n", outputFileName);
return 1;
}
len = strlen(outputFileName);
tmp = (char*)malloc((len+1)*2);
for (src = outputFileName, dst = tmp; *src; ++src)
{
if (*src == '\\')
*dst++ = *src;
*dst++ = *src;
}
*dst = '\0';
outputFileName = tmp;
}
parse(f, output);
free(outputFileName);
return 0;
}
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