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main.cpp
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main.cpp
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#include "utf_converter.h"
#include <fstream>
#include <iterator>
#include <iostream>
#include <getopt.h>
namespace {
void print_usage(const char *argv0) {
fprintf(stderr, "Usage: %s [OPTIONS] <file>\n", argv0);
fprintf(stderr, "\n");
fprintf(stderr, "OPTIONS:\n");
fprintf(stderr, "\t-i, --in-encoding=<Encoding> (default: UTF8)\n");
fprintf(stderr, "\t-o, --out-encoding=<Encoding> (default: UTF8)\n");
fprintf(stderr, "\n");
fprintf(stderr, "Encodings:\n");
fprintf(stderr, "\tUTF8\n");
fprintf(stderr, "\tUTF16LE, UTF16-LE, U16-LE\n");
fprintf(stderr, "\tUTF16BE, UTF16-BE, U16-BE\n");
fprintf(stderr, "\tUTF32LE, UTF32-LE, U32-LE\n");
fprintf(stderr, "\tUTF32BE, UTF32-BE, U32-BE\n");
exit(EXIT_FAILURE);
}
}
int main(int argc, char *argv[]) {
std::string i_encoding = "UTF8";
std::string o_encoding = "UTF8";
static const struct option long_options[] = {
{ "in-encoding" , required_argument, nullptr, 'i' },
{ "out-encoding", required_argument, nullptr, 'o' },
{ 0, 0, 0, 0 }
};
int option_index;
int c;
while((c = getopt_long(argc, argv, "i:o:", long_options, &option_index)) != -1) {
switch(c) {
case 'i':
i_encoding = optarg;
break;
case 'o':
o_encoding = optarg;
break;
default:
print_usage(argv[0]);
}
}
if(optind == argc) {
print_usage(argv[0]);
}
try {
std::string in_file = argv[optind];
utf::Encoding in_encoding = utf::encoding_from_name(i_encoding);
utf::Encoding out_encoding = utf::encoding_from_name(o_encoding);
std::ifstream file(in_file, std::ifstream::binary);
if(file) {
auto curr = std::istreambuf_iterator<char>(file);
auto last = std::istreambuf_iterator<char>();
while(auto cp = utf::read_codepoint(curr, last, in_encoding)) {
utf::write_codepoint(*cp, out_encoding, std::ostream_iterator<uint8_t>(std::cout, ""));
}
}
} catch(const utf::invalid_utf_encoding &) {
print_usage(argv[0]);
}
}