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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define BSIZE 8192
/*!types:re2c */
typedef struct Scanner
{
FILE *fp;
unsigned char *cur, *tok, *lim, *eof;
unsigned char buffer[BSIZE];
unsigned char yych;
enum ScanContition cond;
int state;
} Scanner;
size_t fill(Scanner *s, size_t len)
{
size_t got = ~0, cnt;
if (!s->eof && s->lim - s->tok < len)
{
if (s->tok > s->buffer)
{
cnt = s->tok - s->buffer;
memcpy(s->buffer, s->tok, s->lim - s->tok);
s->tok -= cnt;
s->cur -= cnt;
s->lim -= cnt;
cnt = &s->buffer[BSIZE] - s->lim;
}
else
{
cnt = BSIZE;
}
if ((got = fread(s->lim, 1, cnt, s->fp)) != cnt)
{
s->eof = &s->lim[got];
}
s->lim += got;
}
if (s->eof && s->cur + len > s->eof)
{
return ~0; /* not enough input data */
}
return got;
}
size_t init(Scanner *s)
{
s->cur = s->tok = s->lim = s->buffer;
s->eof = 0;
s->cond = EStateNormal;
s->state = -1;
return fill(s, 0);
}
void fputl(const char *s, size_t len, FILE *stream)
{
while(len-- > 0)
{
fputc(*s++, stream);
}
}
void scan(Scanner *s)
{
s->tok = s->cur;
/*!re2c
re2c:define:YYGETSTATE = "s->state";
re2c:define:YYGETSTATE:naked = 1;
re2c:define:YYCONDTYPE = ScanContition;
re2c:indent:top = 1;
*/
/*!getstate:re2c */
for(;;)
{
s->tok = s->cur;
/*!re2c
re2c:define:YYCTYPE = "unsigned char";
re2c:define:YYCURSOR = s->cur;
re2c:define:YYLIMIT = s->lim;
re2c:define:YYMARKER = s->tok;
re2c:define:YYFILL@len = #;
re2c:define:YYFILL:naked = 1;
re2c:define:YYFILL = "if(fill(s, #) == ~0) break;";
re2c:define:YYSETSTATE@state = #;
re2c:define:YYSETSTATE = "s->state = #;";
re2c:define:YYSETCONDITION = "s->cond = #;";
re2c:define:YYSETCONDITION@cond = #;
re2c:define:YYGETCONDITION = s->cond;
re2c:define:YYGETCONDITION:naked = 1;
re2c:variable:yych = s->yych;
re2c:yych:emit = 0;
re2c:indent:top = 2;
re2c:condenumprefix = EState;
<Normal> "??("
{
fputc('[', stdout);
continue;
}
<Normal> "??)"
{
fputc(']', stdout);
continue;
}
<Normal> "??<"
{
fputc('{', stdout);
continue;
}
<Normal> "??>"
{
fputc('}', stdout);
continue;
}
<Normal> "??="
{
fputc('#', stdout);
continue;
}
<Normal> "??/"
{
fputc('\\', stdout);
continue;
}
<Normal> "??'"
{
fputc('^', stdout);
continue;
}
<Normal> "??!"
{
fputc('|', stdout);
continue;
}
<Normal> "??-"
{
fputc('~', stdout);
continue;
}
<Normal> "/*" => Comment
{
goto yyc_Comment;
}
<Normal> "//" => Skiptoeol
{
goto yyc_Skiptoeol;
}
<Normal> "'\\\"'"|"'\"'"
{
fputl("'\"'", 3, stdout);
continue;
}
<Normal> '"' => String
{
fputc(s->cur[-1], stdout);
continue;
}
<Normal> [^]
{
fputc(s->cur[-1], stdout);
continue;
}
<Comment> "*" "/" => Normal
{
continue;
}
<Comment> [^]
{
goto yyc_Comment;
}
<Skiptoeol> "??/" "\r"? "\n"
{
goto yyc_Skiptoeol;
}
<Skiptoeol> "\\" "\r"? "\n"
{
goto yyc_Skiptoeol;
}
<Skiptoeol> "\r" "\n" => Normal
{
fputc('\r', stdout);
fputc('\n', stdout);
continue;
}
<Skiptoeol> "\n" => Normal
{
fputc('\n', stdout);
continue;
}
<Skiptoeol> [^]
{
goto yyc_Skiptoeol;
}
<String> '\\' .
{
fputl((const char*)s->cur-2, 2, stdout);
continue;
}
<String> '"' => Normal
{
fputc(s->cur[-1], stdout);
continue;
}
<String> [^]
{
fputc(s->cur[-1], stdout);
continue;
}
*/
}
}
int main(int argc, char **argv)
{
Scanner in;
if (argc != 2)
{
fprintf(stderr, "%s <file>\n", argv[0]);
return 1;;
}
memset((char*) &in, 0, sizeof(in));
if (!strcmp(argv[1], "-"))
{
in.fp = stdin;
}
else if ((in.fp = fopen(argv[1], "r")) == NULL)
{
fprintf(stderr, "Cannot open file '%s'\n", argv[1]);
return 1;
}
if (init(&in) > 0)
{
scan(&in);
}
if (in.fp != stdin)
{
fclose(in.fp);
}
return 0;
}
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