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/**
*
* Copyright 2021-2023 Ribose Inc. (https://www.ribose.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Original copyright
*
* SEXP implementation code sexp-main.c
* Ron Rivest
* 6/29/1997
**/
#include <fstream>
#include "sexpp/sexp.h"
using namespace sexp;
const char *help = "The program 'sexp' reads, parses, and prints out S-expressions.\n"
" INPUT:\n"
" Input is normally taken from stdin, but this can be changed:\n"
" -i filename -- takes input from file instead.\n"
" -p -- prompts user for console input\n"
" Input is normally parsed, but this can be changed:\n"
" -s -- treat input up to EOF as a single string\n"
" CONTROL LOOP:\n"
" The main routine typically reads one S-expression, prints it out "
"again, \n"
" and stops. This may be modified:\n"
" -x -- execute main loop repeatedly until EOF\n"
" OUTPUT:\n"
" Output is normally written to stdout, but this can be changed:\n"
" -o filename -- write output to file instead\n"
" The output format is normally canonical, but this can be changed:\n"
" -a -- write output in advanced transport format\n"
" -b -- write output in base-64 output format\n"
" -c -- write output in canonical format\n"
" -l -- suppress linefeeds after output\n"
" More than one output format can be requested at once.\n"
" There is normally a line-width of 75 on output, but:\n"
" -w width -- changes line width to specified width.\n"
" (0 implies no line-width constraint)\n"
" Running without switches implies: -p -a -b -c -x\n"
" Typical usage: cat certificate-file | sexp -a -x \n";
/*************************************************************************/
/* main(argc,argv)
*/
int main(int argc, char **argv)
{
char *c;
bool swa = true, swb = true, swc = true, swp = true, sws = false, swx = true, swl = false;
int i;
int ret = -1;
sexp_exception_t::set_interactive(true);
std::ifstream * ifs = nullptr;
sexp_input_stream_t * is = nullptr;
std::ofstream * ofs = nullptr;
sexp_output_stream_t *os = nullptr;
std::string ofname;
std::string ifname;
try {
std::shared_ptr<sexp_object_t> object;
is = new sexp_input_stream_t(&std::cin);
os = new sexp_output_stream_t(&std::cout);
if (argc > 1)
swa = swb = swc = swp = sws = swx = swl = false;
for (i = 1; i < argc; i++) {
c = argv[i];
if (*c != '-')
throw sexp_exception_t(
std::string("Unrecognized switch ") + c, sexp_exception_t::error, EOF);
c++;
if (*c == 'a')
swa = true; /* advanced output */
else if (*c == 'b')
swb = true; /* base-64 output */
else if (*c == 'c')
swc = true; /* canonical output */
else if (*c == 'h') { /* help */
std::cout << help;
exit(0);
} else if (*c == 'i') { /* input file */
if (i + 1 < argc)
i++;
ifs = new std::ifstream(argv[i], std::ifstream::binary);
if (ifs->fail())
sexp_error(sexp_exception_t::error, "Can't open input file.", 0, 0, EOF);
is->set_input(ifs);
ifname = argv[i];
} else if (*c == 'l')
swl = true; /* suppress linefeeds after output */
else if (*c == 'o') { /* output file */
if (i + 1 < argc)
i++;
ofs = new std::ofstream(argv[i], std::ifstream::binary);
if (ofs->fail())
sexp_error(sexp_exception_t::error, "Can't open output file.", 0, 0, EOF);
os->set_output(ofs);
ofname = argv[i];
} else if (*c == 'p')
swp = true; /* prompt for input */
else if (*c == 's')
sws = true; /* treat input as one big string */
else if (*c == 'w') { /* set output width */
if (i + 1 < argc)
i++;
os->set_max_column(atoi(argv[i]));
} else if (*c == 'x')
swx = true; /* execute repeatedly */
else
throw sexp_exception_t(
std::string("Unrecognized switch ") + argv[i], sexp_exception_t::error, EOF);
}
if (swa == false && swb == false && swc == false)
swc = true; /* must have some output format! */
/* main loop */
if (swp == 0)
is->get_char();
else
is->set_next_char(-2); /* this is not EOF */
while (is->get_next_char() != EOF) {
if (swp) {
if (ifname.empty())
std::cout << "Input:";
else
std::cout << "Reading input from " << ifname;
std::cout << std::endl;
std::cout.flush();
}
is->set_byte_size(8);
if (is->get_next_char() == -2)
is->get_char();
is->skip_white_space();
if (is->get_next_char() == EOF)
break;
object = sws ? is->scan_to_eof() : is->scan_object();
if (swp)
std::cout << std::endl;
if (swc) {
if (swp) {
if (ofname.empty())
std::cout << "Canonical output:" << std::endl;
else
std::cout << "Writing canonical output to '" << ofname << "'";
}
object->print_canonical(os);
if (!swl) {
std::cout << std::endl;
}
}
if (swb) {
if (swp) {
if (ofname.empty())
std::cout << "Base64 (of canonical) output:" << std::endl;
else
std::cout << "Writing base64 (of canonical) output to '" << ofname
<< "'";
}
os->set_output(ofs ? ofs : &std::cout)->print_base64(object);
if (!swl) {
std::cout << std::endl;
std::cout.flush();
}
}
if (swa) {
if (swp) {
if (ofname.empty())
std::cout << "Advanced transport output:" << std::endl;
else
std::cout << "Writing advanced transport output to '" << ofname << "'";
}
os->set_output(ofs ? ofs : &std::cout)->print_advanced(object);
if (!swl) {
std::cout << std::endl;
std::cout.flush();
}
}
if (!swx)
break;
if (!swp)
is->skip_white_space();
else if (!swl) {
std::cout << std::endl;
std::cout.flush();
}
}
ret = 0;
} catch (sexp_exception_t &e) {
std::cout << e.what() << std::endl;
} catch (...) {
std::cout << "UNEXPECTED ERROR" << std::endl;
}
if (is)
delete is;
if (ifs)
delete ifs;
if (os)
delete os;
if (ofs)
delete ofs;
return ret;
}
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