| Server IP : 85.214.239.14 / Your IP : 3.137.185.202 Web Server : Apache/2.4.62 (Debian) System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.18 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /usr/share/doc/re2c/examples/c/eof/ |
Upload File : |
// re2c $INPUT -o $OUTPUT
#include <assert.h>
#include <stdlib.h>
#include <string.h>
static int lex(const char *str, unsigned int len) {
// For the sake of example create a string without terminating null.
char *buf = (char*) malloc(len);
memcpy(buf, str, len);
const char *cur = buf, *lim = buf + len, *mar;
int count = 0;
for (;;) {
/*!re2c
re2c:yyfill:enable = 0;
re2c:eof = 0;
re2c:api = custom;
re2c:api:style = free-form;
re2c:define:YYCTYPE = char;
re2c:define:YYLESSTHAN = "cur >= lim";
re2c:define:YYPEEK = "cur < lim ? *cur : 0"; // fake null
re2c:define:YYSKIP = "++cur;";
re2c:define:YYBACKUP = "mar = cur;";
re2c:define:YYRESTORE = "cur = mar;";
str = ['] ([^'\\] | [\\][^])* ['];
* { count = -1; break; }
$ { break;; }
str { ++count; continue; }
[ ]+ { continue; }
*/
}
free(buf);
return count;
}
#define TEST(s, r) assert(lex(s, sizeof(s) - 1) == r)
int main() {
TEST("", 0);
TEST("'qu\0tes' 'are' 'fine: \\'' ", 3);
TEST("'unterminated\\'", -1);
return 0;
}