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// Umar Arshad
// Copyright 2014
#include <fstream>
#include <sstream>
#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <memory>
using namespace std;
typedef map<string, string> opt_t;
static
void print_usage() {
cout << R"delimiter(BIN2CPP
Converts files from a binary file to C++ headers. It is similar to bin2c and
xxd but adds support for namespaces.
| --name | name of the variable (default: var) |
| --file | input file |
| --output | output file (If no output is specified then it prints to stdout |
| --type | Type of variable (default: char) |
| --namespace | A space seperated list of namespaces |
| --formatted | Tabs for formatting |
| --version | Prints my name |
| --help | Prints usage info |
Example
-------
Command:
./bin2cpp --file blah.txt --namespace blah detail --formatted --name blah_var
Will produce:
#pragma once
#include <cstddef>
namespace blah {
namespace detail {
static const char blah_var[] = {
0x2f, 0x2f, 0x20, 0x62, 0x6c, 0x61, 0x68, 0x2e, 0x74, 0x78,
0x74, 0xa, 0x62, 0x6c, 0x61, 0x68, 0x20, 0x62, 0x6c, 0x61,
0x68, 0x20, 0x62, 0x6c, 0x61, 0x68, 0xa, };
static const size_t blah_var_len = 27;
}
})delimiter";
exit(0);
}
static bool formatted;
static
void add_tabs(const int level ){
if(formatted) {
for(int i =0; i < level; i++) {
cout << "\t";
}
}
}
static
opt_t
parse_options(const vector<string>& args) {
opt_t options;
options["--name"] = "";
options["--type"] = "";
options["--file"] = "";
options["--output"] = "";
options["--namespace"] = "";
options["--eof"] = "";
//Parse Arguments
string curr_opt;
bool verbose = false;
for(auto arg : args) {
if(arg == "--verbose") {
verbose = true;
}
else if(arg == "--formatted") {
formatted = true;
}
else if(arg == "--version") {
cout << args[0] << " By Umar Arshad" << endl;
}
else if(arg == "--help") {
print_usage();
}
else if(options.find(arg) != options.end()) {
curr_opt = arg;
}
else if(curr_opt.empty()) {
//cerr << "Invalid Argument: " << arg << endl;
}
else {
if(options[curr_opt] != "") {
options[curr_opt] += " " + arg;
}
else {
options[curr_opt] += arg;
}
}
}
if(verbose) {
for(auto opts : options) {
cout << get<0>(opts) << " " << get<1>(opts) << endl;
}
}
return options;
}
int main(int argc, const char * const * const argv)
{
vector<string> args(argv, argv+argc);
opt_t&& options = parse_options(args);
//Save default cout buffer. Need this to prevent crash.
auto bak = cout.rdbuf();
unique_ptr<ofstream> outfile;
// Set defaults
if(options["--name"] == "") { options["--name"] = "var"; }
if(options["--output"] != "") {
//redirect stream if output file is specified
outfile.reset(new ofstream(options["--output"]));
cout.rdbuf(outfile->rdbuf());
}
cout << "#pragma once\n";
cout << "#include <cstddef>\n"; // defines size_t
int ns_cnt = 0;
int level = 0;
if(options["--namespace"] != "") {
std::stringstream namespaces(options["--namespace"]);
string name;
namespaces >> name;
do {
add_tabs(level++);
cout << "namespace " << name << " { \n";
ns_cnt++;
namespaces >> name;
} while(!namespaces.fail());
}
if(options["--type"] == "") {
options["--type"] = "char";
}
add_tabs(level);
cout << "static const " << options["--type"] << " " << options["--name"] << "[] = {\n";
ifstream input(options["--file"]);
size_t char_cnt = 0;
add_tabs(++level);
for(char i; input.get(i);) {
cout << "0x" << std::hex << static_cast<int>(i) << ",\t";
char_cnt++;
if(!(char_cnt % 10)) {
cout << endl;
add_tabs(level);
}
}
if (options["--eof"].c_str()[0] == '1') {
// Add end of file character
cout << "0x0";
char_cnt++;
}
cout << "};\n";
add_tabs(--level);
cout << "static const size_t " << options["--name"] << "_len" << " = " << std::dec << char_cnt << ";\n";
while(ns_cnt--) {
add_tabs(--level);
cout << "}\n";
}
cout.rdbuf(bak);
}
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