3m.cpp: config parser

3m.cpp

@@ -0,0 +1,125 @@
+#include <iostream>
+#include <cstdlib>
+#include <sys/socket.h> // For sockets
+#include <sys/types.h> // For getaddrinfo
+#include <arpa/inet.h> // For inet addr conversion
+#include <netdb.h> // For getaddrinfo
+#include <cstring> // For memset
+#include <cerrno>
+#include <unistd.h>
+#include <string>
+#include <fstream>
+#include <sstream>
+using namespace std;
+
+int socdesc; // Socket descriptor
+string homedir, errmsg, req; // Home directory, error message, request
+
+void *get_in_addr(sockaddr *sa) { // IP Address obtaining by protocol
+if(sa->sa_family == AF_INET) {
+return &(((sockaddr_in*)sa) -> sin_addr);
+}
+return &(((sockaddr_in6*)sa) -> sin6_addr);
+}
+
+string strip_endl(string s) { // Newline stripping from string
+	int len = s.length();
+	for(int i = 0; i < len; i++) {
+		if(s[i] == '\n') {
+			s.erase(i,1);
+			len = s.length();
+			i--;
+		}
+	}
+	return s;
+
+}
+int parseconfig(string *localpath, string *modlist, string *repoinfo, string config) { // Parse config file and obtain variables modifiable by user
+ifstream conf(config.c_str());
+if(!conf) {
+cerr << "Config parse error: Cannot open config file for reading: " << config << endl;
+conf.close();
+return 1;
+}
+string action = "parse";
+while(!conf.eof()) {
+string line = "";
+conf >> line;
+if(conf) {
+if(action == "parse") {
+if(line[0] = "[") {
+string sa = "";
+int i = 1;
+while(line[i] != "]") {
+if(i >= line.length()-1 && line[i] != "]") {
+cerr << "Config parse error: Found " << line[i] << " although ] was expected." << endl;
+conf.close();
+return 1;
+}
+sa += line[i];
+}
+if(sa == "localpath") {
+action = "localpath";
+} else if(sa == "modlist") {
+action = "modlist";
+} else if(sa == "repoinfo") {
+action = "repoinfo";
+} else {
+cerr << "Config parse error: Found " << sa << " although localpath, modlist or repoinfo was expected." << endl;
+conf.close();
+return 1;
+}
+} else {
+cerr << "Config parse error: Found " << line[i] << " although [ was expected." << endl;
+conf.close();
+return 1;
+}
+} else if(action == "localpath") {
+if(line[0] == "[") {
+cerr << "Config parse error: Found [ although string and not option was expected." << endl;
+conf.close();
+return 1;
+}
+localpath = line;
+} else if(action == "modlist") {
+if(line[0] == "[") {
+cerr << "Config parse error: Found [ although string and not option was expected." << endl;
+conf.close();
+return 1;
+}
+modlist = line;
+} else if(action == "repoinfo") {
+if(line[0] == "[") {
+cerr << "Config parse error: Found [ although string and not option was expected." << endl;
+conf.close();
+return 1;
+}
+repoinfo = line;
+}
+}
+}
+}
+return 0;
+}
+
+int main(int argc, char **argv) {
+homedir = getenv("HOME");	
+string config;
+sstream sconfig;
+sconfig << homedir << "/.3m/config";
+config = sconfig.str();
+int ps;
+string localrepo, localml, localri;
+ps = parseconfig(&localrepo, &localml, &localri, config);
+if(ps == 1) {
+cerr << "Parse error! Exiting..." << endl;
+return EXIT_FAILURE;
+}
+cout << "Config parsed successfully!" << endl;
+//---DEBUG START---
+cout << "DEBUG: localrepo: " << localrepo << endl;
+cout << "DEBUG: localml: " << localml << endl;
+cout << "DEBUG: localri: " << localri << endl;
+//---DEBUG END---
+return EXIT_SUCCESS;
+}