Added code

Makefile

@@ -0,0 +1,2 @@
+all:
+	g++ -o gcode_slice main.cpp

main.cpp

@@ -0,0 +1,211 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <string>
+#include <vector>
+
+using namespace std;
+
+#define DIR_TOP "./slic3r-config"
+#define DIR_PRINT "print"
+#define DIR_PRINTER "printer"
+#define DIR_FILAMENT "filament"
+
+int check_folder_structure(void);
+vector<string> get_folder_entries(const char *folder);
+vector<string> get_choices(void);
+string pick_option(const string& name, const vector<string>& options);
+void flush_input(void);
+void usage(char *name);
+
+int main(int argc, char **argv)
+{
+	vector<string> configurations;
+	vector<string>::iterator it;
+	string command;
+
+	// Check for stl file
+	if (argc < 2)
+	{
+		usage(argv[0]);
+		return -1;
+	}
+
+	if (0 != check_folder_structure())
+	{
+		return -1;
+	}
+
+	// Iterate configurations and build command
+	configurations = get_choices();
+	command = "slic3r --no-gui";
+	for (it = configurations.begin(); it != configurations.end(); ++it)
+	{
+		command += " --load \"";
+		command += *it;
+		command += "\"";
+	}
+
+	command += " \"";
+	command += argv[1];
+	command += "\"";
+
+	return system(command.c_str());
+}
+
+int check_folder_structure(void)
+{
+	string path;
+
+	path = DIR_TOP;
+	if (0 != access(path.c_str(), F_OK))
+	{
+		printf("'%s' does not exist\n", path.c_str());
+		return -1;
+	}
+
+	path = DIR_TOP;
+	path += "/";
+	path += DIR_PRINT;
+	if (0 != access(path.c_str(), F_OK))
+	{
+		printf("'%s' does not exist\n", path.c_str());
+		return -1;
+	}
+
+	path = DIR_TOP;
+	path += "/";
+	path += DIR_PRINTER;
+	if (0 != access(path.c_str(), F_OK))
+	{
+		printf("'%s' does not exist\n", path.c_str());
+		return -1;
+	}
+
+	path = DIR_TOP;
+	path += "/";
+	path += DIR_FILAMENT;
+	if (0 != access(path.c_str(), F_OK))
+	{
+		printf("'%s' does not exist\n", path.c_str());
+		return -1;
+	}
+
+	return 0;
+}
+
+vector<string> get_folder_entries(const char *folder)
+{
+	vector<string> result;
+	DIR *dir;
+	struct dirent *entry;
+	string name;
+
+	dir = opendir(folder);
+	if (NULL != dir)
+	{
+		entry = readdir(dir);
+		while (NULL != entry)
+		{
+			if ((DT_REG == entry->d_type) || (DT_LNK == entry->d_type))
+			{
+				name = entry->d_name;
+				result.push_back(name);
+			}
+			entry = readdir(dir);
+		}
+		closedir(dir);
+	}
+
+	sort(result.begin(), result.end());
+	return result;
+}
+
+vector<string> get_choices(void)
+{
+	vector<string> result;
+	vector<string> options;
+	string folder;
+	string dirs[3];
+	string pick;
+	int i;
+
+	dirs[0] = DIR_PRINT;
+	dirs[1] = DIR_PRINTER;
+	dirs[2] = DIR_FILAMENT;
+
+	for (i = 0; i < 3; ++i)
+	{
+		folder = DIR_TOP;
+		folder += "/";
+		folder += dirs[i];
+		options = get_folder_entries(folder.c_str());
+
+		pick = pick_option(dirs[i], options);
+		if (pick.empty())
+		{
+			continue;
+		}
+
+		folder += "/";
+		folder += pick;
+		result.push_back(folder);
+	}
+
+	return result;
+}
+
+string pick_option(const string& name, const vector<string>& options)
+{
+	vector<string>::const_iterator it;
+	int i;
+	int error;
+
+	printf("Available %s configurations:\n", name.c_str());
+	printf("%-2d - Use slic3r defaults\n", 0);
+	i = 1;
+	for (it = options.begin(); it != options.end(); ++it)
+	{
+		printf("%-2d - %s\n", i, it->c_str());
+		++i;
+	}
+
+redo_choice:
+	printf("Choice: ");
+	error = scanf("%d", &i);
+	flush_input();
+	if (1 != error)
+	{
+		printf("Could not understand choice. Try again.\n");
+		goto redo_choice;
+	}
+
+	if ((i < 0) || (i > options.size()))
+	{
+		printf("Number out of bounds. Try again.\n");
+		goto redo_choice;
+	}
+
+	if (0 == i)
+	{
+		return "";
+	}
+
+	return options[i - 1];
+}
+
+void flush_input()
+{
+	char c;
+	while((c = getchar()) != '\n' && c != EOF);
+}
+
+void usage(char *name)
+{
+	printf("Usage:\n");
+	printf("\t%s [stl file]\n", name);
+}