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#include "binlog_encoding.h"
#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <stdexcept>
#include <getopt.h>
using std::ios;
using std::cout;
using std::cerr;
using std::flush;
void print_usage_and_exit(char *prog) {
const char *name= strrchr(prog, '/');
if (name)
++name;
else
name= "length";
cerr << "Usage:\n"
<< " " << name << " [ -vvvx ] -e <number> ...\n";
cerr << " " << name << " [ -vvvx ] -d <byte> ...\n";
cerr << flush;
exit(1);
}
void encode(int argc, char *argv[], int verbose_level, bool hex_output) {
for (int i = 0 ; i < argc ; ++i) {
size_t length = strtoul(argv[i], NULL, 0);
if (length < 2)
throw std::invalid_argument("Length has to be > 1");
unsigned char buf[128];
unsigned char *end= length_encode(length, buf);
ios::fmtflags saved_flags= cout.flags();
if (verbose_level > 0)
cout << "Length " << length << ": ";
if (hex_output)
cout << std::hex << std::setw(2) << std::setfill('0');
unsigned char *ptr= buf;
while (true) {
if (hex_output)
cout << "0x";
cout << (unsigned int) *ptr;
if (++ptr == end)
break;
cout << " ";
}
cout << std::endl;
cout.setf(saved_flags);
}
}
void decode(int argc, char *argv[], int verbose_level, bool hex_output) {
unsigned char buf[128];
for (int i = 0 ; i < argc ; ++i)
buf[i]= strtoul(argv[i], NULL, 0);
size_t length;
(void) length_decode(buf, &length);
ios::fmtflags saved_flags= cout.flags();
if (verbose_level > 0)
cout << "Length ";
if (hex_output)
cout.setf(ios::hex, ios::basefield);
cout << length << std::endl;
cout.setf(saved_flags);
}
int main(int argc, char *argv[]) {
enum { NO_ACTION, ENCODE_ACTION, DECODE_ACTION } action= NO_ACTION;
static struct option long_options[] = {
{ "decode", 0 /* has_arg */, NULL, 'd' },
{ "encode", 0 /* has_arg */, NULL, 'e' },
{ "verbose", 0 /* has_arg */, NULL, 'v' },
{ "hex", 0 /* has_arg */, NULL, 'x' },
{ 0, 0, 0, 0 }
};
int verbose_level= 0;
bool hex_output= false;
int ch;
while ((ch= getopt_long(argc, argv, "devx", long_options, NULL)) != -1) {
switch (ch) {
case 0:
case '?':
print_usage_and_exit(argv[0]);
break;
case 'd':
action= DECODE_ACTION;
break;
case 'e':
action= ENCODE_ACTION;
break;
case 'v':
++verbose_level;
break;
case 'x':
hex_output= true;
break;
}
}
try {
switch (action) {
case ENCODE_ACTION:
encode(argc - optind, argv + optind, verbose_level, hex_output);
break;
case DECODE_ACTION:
decode(argc - optind, argv + optind, verbose_level, hex_output);
break;
default:
print_usage_and_exit(argv[0]);
break;
}
}
catch (std::invalid_argument& ex) {
cerr << ex.what() << "\n";
print_usage_and_exit(argv[0]);
}
return EXIT_SUCCESS;
}
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