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phenix-geo.cc
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phenix-geo.cc
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/* coords/phenix-geo.cc
*
* Copyright 2014 by Medical Research Council
* Author: Paul Emsley
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*/
#include <iostream>
#include <fstream>
#include <stdexcept>
#include "utils/coot-utils.hh"
#include "phenix-geo.hh"
std::ostream&
coot::operator<<(std::ostream &s, phenix_geo_bond gb) {
std::cout << "[phenix geo: " << gb.atom_1 << " " << gb.atom_2 << " ]";
return s;
}
coot::atom_spec_t
coot::phenix_geo_bonds::parse_line_for_atom_spec(const std::string &l) const {
atom_spec_t atom_spec;
std::string atom_name_1(l.substr(10,4));
std::string chain_id(l.substr(19,1));
unsigned int post_chain_id_char_idx = 20;
// Fix multi-char chain-ids here with a while() {}
unsigned int llen = l.length();
unsigned int residue_number_str_idx = post_chain_id_char_idx + 1; // start
std::string residue_number_str;
std::string ins_code;
while (residue_number_str_idx < llen) {
char c = l[residue_number_str_idx];
if (c >= '0' && c <= '9') {
residue_number_str += c;
} else {
if (c != ' ')
ins_code = c;
if (residue_number_str.length())
break;
}
residue_number_str_idx++;
}
try {
int res_no = util::string_to_int(residue_number_str);
atom_spec = atom_spec_t(chain_id, res_no, ins_code, atom_name_1, "");
}
catch (const std::runtime_error &rte) {
// parse fail. Heyho.
}
return atom_spec;
}
coot::phenix_geo_bonds::phenix_geo_bonds(const std::string &file_name) {
bool debug = false;
if (! file_exists(file_name)) {
std::cout << "File not found: " << file_name << std::endl;
} else {
std::ifstream f(file_name.c_str());
if (f) {
std::vector<std::string> lines;
std::string line;
while (std::getline(f, line)) {
lines.push_back(line);
}
if (lines.size() > 0) {
unsigned int line_idx = 0;
while (line_idx < lines.size()) {
const std::string &l = lines[line_idx];
if (l.length() > 22) {
if (l.substr(0,4) == "bond") {
atom_spec_t atom_spec_1 = parse_line_for_atom_spec(l);
if (! atom_spec_1.empty()) {
const std::string &l2 = lines[line_idx+1];
atom_spec_t atom_spec_2 = parse_line_for_atom_spec(l2);
if (! atom_spec_2.empty()) {
const std::string &lg = lines[line_idx+3];
std::vector<std::string> bits = util::split_string_no_blanks(lg);
if (bits.size() == 6) {
try {
std::vector<double> v(6,-1);
for (unsigned int i=0; i<6; i++) {
v[i] = util::string_to_float(bits[i]);
}
phenix_geo_bond gb(atom_spec_1, atom_spec_2);
gb.set_geom(v[0], v[2], v[2], v[3], v[4], v[5]);
bonds.push_back(gb);
}
catch(const std::runtime_error &rte) {
// number parse fail.
std::cout << "number parse fail " << lg << std::endl;
}
}
}
}
}
}
line_idx++; // next
}
}
}
}
if (debug) {
std::cout << "found " << bonds.size() << " bonds" << std::endl;
for (unsigned int ibond=0; ibond<bonds.size(); ibond++) {
std::cout << " " << bonds[ibond].atom_1 << " "<< bonds[ibond].atom_2 << std::endl;
}
}
}
//