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#ifndef STIM_ARGUMENTS
#define STIM_ARGUMENTS
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#include <string>
#include <vector>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <iterator>
#include <algorithm>
#ifdef _WIN32
#include <Windows.h>
#endif
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namespace stim{
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class argument
{
private:
bool ansi;
//argument name
std::string name;
//description of the argument
std::vector<std::string> desc;
//argument values
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std::vector<std::string> vals;
//range or example
std::string range;
//flag is true when the argument is user-specified
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bool flag;
void parse_val(const std::string &s){
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vals.clear();
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std::stringstream ss(s);
std::string item;
while (std::getline(ss, item, ' ')) {
vals.push_back(item);
}
}
void parse_desc(const std::string &s){
desc.clear();
std::stringstream ss(s);
std::string item;
while (std::getline(ss, item, '\n')) {
desc.push_back(item);
}
}
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public:
void set_ansi(bool b){ ansi = b; }
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//create an argument with a given name, description, and default value
argument(std::string _name, std::string _desc, std::string _default = "", std::string _range = "")
{
name = _name;
parse_desc(_desc);
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parse_val(_default);
//if a default value is provided, set the flag
if(_default != "")
flag = true;
else flag = false;
range = _range;
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}
int nargs()
{
return vals.size();
}
//return the value of a text argument
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std::string as_string(unsigned int n = 0)
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{
if(!flag)
{
std::cout<<"ERROR - Argument requested without being set: "<<name<<std::endl;
exit(1);
}
if(vals.size() > n)
return vals[n];
else return "";
}
//return the value of a floating point argument
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float as_float(unsigned int n = 0)
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{
if(!flag)
{
std::cout<<"ERROR - Argument requested without being set: "<<name<<std::endl;
exit(1);
}
if(vals.size() > n)
{
float r;
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if ( ! (std::istringstream(vals[n]) >> r) ) r = 0;
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return r;
}
else return 0;
}
//return the value of an integer argument
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int as_int(unsigned int n = 0)
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{
if(!flag)
{
std::cout<<"ERROR - Argument requested without being set: "<<name<<std::endl;
exit(1);
}
if(vals.size() > n)
{
int r;
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if ( ! (std::istringstream(vals[n]) >> r) ) r = 0;
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return r;
}
else return 0;
}
//get the width of the left column
int col_width()
{
int n = 3;
//add the length of the argument name
n += name.size();
//if there are any default parameters
if(vals.size() > 0)
{
//padding (parenthesis, =, etc.)
n += 6;
//for each default argument value
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for(unsigned int v=0; v<vals.size(); v++)
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n += vals[v].size() + 1;
}
//add a buffer of 4 characters
n += 4;
return n;
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}
//string output
std::string toStr(int width = 0)
{
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std::stringstream ss;
int color_size = 0;
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//create the left column
std::string left_part = std::string(" --") + name;
if(vals.size() != 0)
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{
if(ansi)
left_part += "\033[1;32m";
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left_part += " ( = ";
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for(unsigned int v=0; v<vals.size(); v++)
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left_part += vals[v] + std::string(" ");
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left_part += ")";
if(ansi)
left_part += "\033[0m";
if(ansi)
color_size = 11;
}
else
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color_size = 0;
//if no width is passed, put 4 spaces between left and right columns
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if(width == 0) width = col_width();
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ss<<std::left<<std::setw(width + color_size)<<left_part;
//output right column
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for(unsigned int d=0; d<desc.size(); d++)
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{
if(d == 0)
ss<<desc[0];
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else
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ss<<std::endl<<std::setfill(' ')<<std::setw(width)<<" "<<desc[d];
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}
//output the range in the right column
if(range != "" && ansi)
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ss<<std::endl<<std::setfill(' ')<<std::setw(width)<<" "<<" "<<std::string("\033[1;36m") + range + "\033[0m";
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else if(range != "")
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ss<<std::endl<<std::setfill(' ')<<std::setw(width)<<" "<<" "<<range;
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return ss.str();
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}
//compare the name of the argument to a string
bool operator==(std::string rhs)
{
return (name == rhs);
}
//set the argument to a given value
void set(std::string _value)
{
parse_val(_value);
//set the flag
flag = true;
}
bool is_set()
{
return flag;
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}
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};
struct argsection
{
std::string name;
unsigned int index;
};
class arglist
{
private:
bool ansi;
//vector of arguments
std::vector<argument> args;
//column width of the longest argument
int col_width;
//list of sections
std::vector<argsection> sections;
public:
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arglist(){
col_width = 0;
ansi = true;
}
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void set_ansi(bool b)
{
ansi = b;
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for(unsigned int i=0; i<args.size(); i++)
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args[i].set_ansi(ansi);
}
void add(std::string _name, std::string _desc, std::string _default = "", std::string _range = "")
{
argument arg(_name, _desc, _default, _range);
arg.set_ansi(ansi);
args.push_back(arg);
col_width = std::max<int>(col_width, arg.col_width());
}
void section(std::string _name)
{
argsection s;
s.name = _name;
s.index = args.size();
sections.push_back(s);
}
//output the arguments (generally in response to --help)
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std::string str()
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{
std::stringstream ss;
int si = -1;
if(sections.size() > 0)
si = 0;
//for each argument
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for(unsigned int a=0; a<args.size(); a++)
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{
if(si != -1 && a == sections[si].index)
{
if(ansi)
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ss<<std::endl<<std::left<<std::setfill('=')<<std::setw(col_width)<<std::string("\033[1;31m") + sections[si].name<<"\033[0m"<<std::endl;
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else
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ss<<std::endl<<std::left<<std::setfill('=')<<std::setw(col_width)<<sections[si].name<<std::endl;
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si++;
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if(si == (int)sections.size()) si = -1;
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}
ss<<args[a].toStr(col_width)<<std::endl;
}
return ss.str();
}
int index(std::string _name)
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unsigned int i = find(args.begin(), args.end(), _name) - args.begin();
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if(i >= args.size())
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return -1;
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return (int)i;
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}
void set(std::string _name, std::string _value)
{
int i = index(_name);
if(i != -1)
{
args[i].set(_value);
//adjust the column width if necessary
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col_width = (std::max)(col_width, args[i].col_width());
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}
else
std::cout<<"ERROR - Argument not recognized: "<<_name<<std::endl;
}
//parse a parameter string
void parse(int argc, char* argv[])
{
//if the number of arguments is 1, we're done
if(argc <= 1) return;
std::string name;
std::string params;
for(int i=1; i<argc; i++)
{
//if the argument is a parameter name
if(argv[i][0] == '-' && argv[i][1] == '-')
{
//add any previous arguments
if(name != "")
set(name, params);
//set the current argument to this name
name = argv[i]+2;
//clear the parameters list
params = "";
}
else
{
if(params != "")
params += " ";
params += argv[i];
}
}
//set the last argument
set(name, params);
}
//determine if a parameter has been set (either specified by the user or with a default value)
bool operator()(std::string _name)
{
int i = find(args.begin(), args.end(), _name) - args.begin();
if(i < 0)
{
std::cout<<"ERROR - Unspecified parameter name: "<<_name<<std::endl;
exit(1);
}
return args[i].is_set();
}
int nargs(std::string _name)
{
int i = find(args.begin(), args.end(), _name) - args.begin();
if(i < 0)
{
std::cout<<"ERROR - Unspecified parameter name: "<<_name<<std::endl;
exit(1);
}
return args[i].nargs();
}
argument operator[](std::string _name)
{
int i = find(args.begin(), args.end(), _name) - args.begin();
if(i < 0)
{
std::cout<<"ERROR - Unspecified parameter name: "<<_name<<std::endl;
exit(1);
}
return args[i];
}
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};
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} //end namespace stim
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#endif
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