filename.h
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#ifndef STIM_FILENAME_H
#define STIM_FILENAME_H
#include <stdio.h> /* defines FILENAME_MAX */
#ifdef _WIN32
#include <windows.h>
#include <direct.h>
#define GetCurrentDir _getcwd
#define STIM_FILENAME_DIV '\\'
#else
#include <unistd.h>
#define GetCurrentDir getcwd
#define STIM_FILENAME_DIV '/'
#endif
#include <string>
#include <sstream>
#include <iomanip>
#include <vector>
#include <stack>
#include <algorithm>
#include <iostream>
#include "../parser/parser.h"
namespace stim{
//filename class designed to work with both Windows and Unix
class filename{
private:
void init(){
absolute = false;
}
protected:
std::string drive; //drive letter (for Windows)
std::vector<std::string> path; //directory hierarchy
std::string prefix; //file prefix (without extension)
std::string ext; //file extension
bool absolute; //filename is an absolute path
//replaces win32 dividers with the Linux standard
std::string unix_div(std::string s) {
std::replace( s.begin(), s.end(), '\\', '/');
return s;
}
//break up a filename into a prefix and extension
void parse_name(std::string fname){
//find the extension
size_t xpos = fname.find_last_of('.'); //find the position of the extension period (if there is one)
if(xpos != std::string::npos){ //split the prefix and extension
prefix = fname.substr(0, xpos);
ext = fname.substr(xpos + 1);
}
else
prefix = fname;
}
//parse a file locator string
void parse(std::string loc){
loc = unix_div(loc);
//determine the drive (if Windows)
drive = "";
#ifdef _WIN32
//if the second character is a colon, the character right before it is the drive
if(loc[1] == ':'){
absolute = true; //this is an absolute path
drive = loc[0]; //copy the drive letter
loc = loc.substr(3); //remove the drive information from the locator string
}
#else
if(loc[0] == STIM_FILENAME_DIV){
absolute = true;
loc = loc.substr(1);
}
#endif
//determine the file name
std::string fname = loc.substr( loc.find_last_of('/') + 1 ); //find the file name (including extension)
//parse the file name
parse_name(fname);
//find the directory hierarchy
std::string dir = loc.substr(0, loc.find_last_of('/') + 1 );
path = stim::parser::split(dir, '/');
}
public:
filename(){
init();
}
filename(std::string loc){
init();
parse(loc);
}
std::string get_name(){
if(prefix == "" && ext == "")
return "";
else
return prefix + "." + ext;
}
std::string get_extension(){
return ext;
}
std::string get_prefix(){
return prefix;
}
std::string dir(){
std::stringstream ss;
//if the path is absolute
if(absolute){
//output the drive letter if in Windows
#ifdef _WIN32
ss<<drive<<":";
#endif
ss<<STIM_FILENAME_DIV;
}
//output the directory
for(unsigned int d = 0; d < path.size(); d++)
ss<<path[d]<<STIM_FILENAME_DIV;
return ss.str();
}
std::string str(){
std::stringstream ss;
ss<<dir()<<get_name();
return ss.str();
}
//*****************************************************************************************************************
// output is the directory and the prefix and the extension of the files, which are looking for in that directory.
std::string dir_fname(){
std::stringstream ss;
//if the path is absolute
if(absolute){
//output the drive letter if in Windows
#ifdef _WIN32
ss<<drive<<":";
#endif
ss<<STIM_FILENAME_DIV;
}
for(unsigned int d = 0; d < path.size(); d++)
ss<<path[d]<<STIM_FILENAME_DIV;
ss<<get_name();
return ss.str();
}
// output is the directory and the name of the file which are found in that given directory
std::string f_name(std::string file_name){
std::stringstream ss;
//if the path is absolute
if(absolute){
//output the drive letter if in Windows
#ifdef _WIN32
ss<<drive<<":";
#endif
ss<<STIM_FILENAME_DIV;
}
//output the directory
for(unsigned int d = 0; d < path.size(); d++)
ss<<path[d]<<STIM_FILENAME_DIV;
stim::filename fn = file_name;
std::string fn_prefix = fn.prefix;
std::string fn_ext = fn.ext;
ss<<fn_prefix + '.' + fn_ext;
return ss.str();
}
std::vector<stim::filename> get_list(){
#ifdef _WIN32
//get a list of files matching the current template
//stim::filename file_path;
stim::filename filepath(dir_fname());
HANDLE hFind = INVALID_HANDLE_VALUE;
WIN32_FIND_DATAA FindFileData;
std::vector<stim::filename> file_list;
hFind = FindFirstFileA((filepath.str().c_str()), &FindFileData);
if (hFind == INVALID_HANDLE_VALUE) {
printf ("Invalid file handle. Error is %u.\n", GetLastError());
}
else {
std::string file_name = FindFileData.cFileName; //get the file name
std::string file_path = dir();
stim::filename current_file(file_path + file_name);
file_list.push_back(current_file);
// List all the other files in the directory.
while (FindNextFileA(hFind, &FindFileData) != 0){
file_name = FindFileData.cFileName;
current_file = (f_name(file_name));
file_list.push_back(current_file);
}
FindClose(hFind);
}
return file_list;
#else
std::cout<<"File lists aren't currently supported on Unix/Linux systems."<<std::endl;
exit(1);
#endif
}
//**************************************************************************************************
//gets the current working directory
static stim::filename cwd(){
char cCurrentPath[FILENAME_MAX];
if (!GetCurrentDir(cCurrentPath, sizeof(cCurrentPath))){
std::cout<<"ERROR getting current working directory."<<std::endl;
exit(1);
}
std::cout<<cCurrentPath<<std::endl;
return stim::filename(std::string(cCurrentPath) + STIM_FILENAME_DIV);
}
void set_name(std::string fname){
parse_name(fname);
}
//get a path relative to the current one
stim::filename get_relative(std::string rel){
std::vector<std::string> rel_path = stim::parser::split(rel, STIM_FILENAME_DIV);
//if the relative path doesn't contain a file, add a blank string to be used as the filename
if(rel[rel.size()-1] == STIM_FILENAME_DIV)
rel_path.push_back("");
//create a stack representing the current absolute path
std::stack<std::string, std::vector<std::string> > s(path);
//for each token in the relative path
for(int d=0; d<rel_path.size() - 1; d++){
//if the token is a double-dot, pop a directory off of the stack
if(rel_path[d] == "..")
s.pop();
else
s.push(rel_path[d]);
}
std::string* end = &s.top() + 1;
std::string* begin = end - s.size();
std::vector<std::string> result_path(begin, end);
//create a new path to be returned
stim::filename result = *this;
result.path = result_path;
result.set_name(rel_path.back());
return result;
}
/// This function replaces a wildcard in the prefix with the specified string
stim::filename insert(std::string str){
stim::filename result = *this; //initialize the result filename to the current filename
size_t loc = result.prefix.find('*'); //find a wild card in the string
if(loc == std::string::npos) //if a wildcard isn't found
result.prefix += str; //append the value to the prefix
else
result.prefix.replace(loc, 1, str); //replace the wildcard with the string
return result; //return the result
}
stim::filename insert(size_t i, size_t n = 2){
std::stringstream ss;
ss << std::setw(n) << std::setfill('0') << i;
return insert(ss.str());
}
bool is_relative(){
return !absolute;
}
bool is_absolute(){
return absolute;
}
};
} //end namespace stim
#endif