path: root/src/msgparser.cc

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
 *            msgparser.cc
 *
 *  Fri Feb 24 14:59:34 CET 2012
 *  Copyright 2012 Jonas Suhr Christensen
 *  jsc@umbraculum.org
 ****************************************************************************/

/*
 *  This file is part of Munia.
 *
 *  Munia 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  Munia 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 Munia; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include "msgparser.h"
#include <stdlib.h>
#include <stdio.h>

#include <list>
#include <vector>

inline void parse_add(msg_t& m, std::string data) {
  int offset = 0;
  std::string title = data.substr(offset, data.find(' ', offset) - offset);
  offset += title.length() + 1;
  std::string desc = data.substr(offset, data.find(' ', offset) - offset);
  offset += desc.length() + 1;
  std::string x_str = data.substr(offset, data.find(' ', offset) - offset);
  int x = atoi(x_str.c_str());
  offset += x_str.length() + 1;
  std::string y_str = data.substr(offset, data.find(' ', offset) - offset);
  int y = atoi(y_str.c_str());

  sprintf(m.add.title, "%s", desc.c_str());
  sprintf(m.add.desc, "%s", desc.c_str());
  m.add.x = x;
  m.add.y = y;
}

inline void parse_del(msg_t& m, std::string data) {
    int offset = 0;
    std::string id_str = data.substr(offset, data.find(' ', offset) - offset);
    int id = atoi(id_str.c_str());

    m.del.id = id;
}

inline void parse_move(msg_t& m, std::string data) {
    int offset = 1;
    std::string s_id = data.substr(offset, data.find(' ', offset) - offset);
    int id = atoi(s_id.c_str());
    offset += s_id.length() + 1;
    std::string x_str = data.substr(offset, data.find(' ', offset) - offset);
    int x = atoi(x_str.c_str());
    offset += x_str.length() + 1;
    std::string y_str = data.substr(offset, data.find(' ', offset) - offset);
    int y = atoi(y_str.c_str());

    m.move.id = id;
    m.move.x = x;
    m.move.y = y;
}

MsgVector parse_msg(std::string data) {

  printf("Parsing: %s\n", data.c_str());
 
  typedef std::vector<std::string> TokenVector;

  // this name is pretty stupid as we already use the name MsgVector for something completely else
  typedef std::list<TokenVector> MsgList; 

  MsgList msglist;
  TokenVector tokens;
  std::string token;
  bool inside_quote = false;
  char prev_ch = '0';
  for(int i = 0; i < data.length(); i++) {
    char ch = data[i];
  
    switch(ch) {
      case '\"':
        if(prev_ch != '\\')
          inside_quote = !inside_quote;
        else { 
//          printf("Appending %c\n", ch);
          token += ch;
        }
        break;
      case ' ':
        if(inside_quote) { 
//          printf("Appending %c\n", ch);
          token += ch;
          break;
        }
        if(token.empty()) continue; // skip multiple white spaces and pre white space
//        printf("Adding token %s\n", token.c_str());
        tokens.push_back(token);
        token.clear();
        break;
      case ';':
        if(inside_quote) {
//          printf("Appending %c\n", ch);
          token += ch;
          break;
        }
//        printf("Adding msg...\n");
        if(!token.empty()) {
          tokens.push_back(token);
        }
        msglist.push_back(tokens);
        tokens.clear();
        token.clear();
        break;
      default:
//        printf("Appending %c\n", ch);
        token += ch;
        break;
    }
    prev_ch = ch;
  }

  if(!token.empty()) {
    tokens.push_back(token);
    token.clear();
  }

  if(!tokens.empty()) {
    msglist.push_back(tokens);
    tokens.clear();
  }

//  printf("Number of messages: %d\n", msglist.size());

  MsgVector v; 
  MsgList::iterator it_msg;
  for(it_msg = msglist.begin(); it_msg != msglist.end(); it_msg++) {
    TokenVector t = *it_msg;

    //malformed msg
    if(t.size() < 1) continue;
  
    msg_t m;

    if(t[0] == "add") m.cmd = cmd::add;
    else if(t[0] == "del") m.cmd = cmd::del;
    else if(t[0] == "move") m.cmd = cmd::move;
    else if(t[0] == "update") m.cmd = cmd::update;
    else m.cmd = cmd::error;

//    printf("Number of tokens %d\n", t.size());

    switch(m.cmd) {
      case cmd::add: {
        if(t.size() != 4+1) { 
          printf("Wrong number of parameters\n");
          continue;
        }
        sprintf(m.add.title, "%s", t[1].c_str());
        sprintf(m.add.desc, "%s", t[2].c_str());
        m.add.x = atoi(t[3].c_str());
        m.add.y = atoi(t[4].c_str());
//        printf("addcmd: %s %s %d %d\n", m.add.title, m.add.desc, m.add.x, m.add.y);
        break;
      }
      case cmd::del: {
        if(t.size() != 1+1) { 
          printf("Wrong number of parameters\n");
          continue;
        }
        m.del.id = atoi(t[1].c_str());
        break;
      }
      case cmd::move: {
        if(t.size() != 3+1) { 
          printf("Wrong number of parameters\n");
          continue;
        }
        m.move.id = atoi(t[1].c_str());
        m.move.x = atoi(t[2].c_str());
        m.move.y = atoi(t[3].c_str());
        break;
      }
      case cmd::update: {
        if(t.size() != 3+1) {
          printf("Wrong number of parameters\n");
          continue; 
        }
        break;
      }
      default:
        break;
    };

    v.push_back(m);
  }
  
  return v;
}

msg_t create_msg(cmd::cmd_t type, task_t t) {
  msg_t m;
  m.cmd = type;
  switch(type) {
    case cmd::add: {
      m.add.id = t.id;
      m.add.x = t.x;
      m.add.y = t.y;
//      m.add.title = t.title.c_str();
//      m.add.desc = t.desc.c_str();
      snprintf(m.add.title, sizeof(m.add.title), "%s", t.title.c_str());
      snprintf(m.add.desc, sizeof(m.add.desc), "%s", t.desc.c_str());
      break;
    }
    case cmd::del: {
      m.del.id = t.id;
      break;
    }
    case cmd::move: {
      m.move.id = t.id;
      m.move.x = t.x;
      m.move.y = t.y;
      break;
    }
    case cmd::update: {
      m.update.id = t.id;
//      m.update.title = t.title;
//      m.update.desc = t.desc;
      snprintf(m.update.title, sizeof(m.update.title), "%s", t.title.c_str());
      snprintf(m.update.desc, sizeof(m.update.desc), "%s", t.desc.c_str());
      break;
    };
    default:
      break;
  }
  return m;
}

#define BUF_SIZE 4096
std::string msg_tostring(msg_t m) {  
  char buf[4096];
  switch(m.cmd) {
    case cmd::add: {
      printf("msg: %d, %d, %d, %s, %s\n", m.add.id, m.add.x, m.add.y, m.add.title, m.add.desc);
      snprintf(buf, BUF_SIZE, "add %d %s %s %d %d;",
               m.add.id,
               m.add.title, m.add.desc,
               m.add.x, m.add.y);
      break;
    }
    case cmd::del: {
      snprintf(buf, BUF_SIZE, "del %d;", m.del.id);
      break;
    }
    case cmd::move: {
      snprintf(buf, BUF_SIZE, "move %d %d %d;", m.move.id, m.move.x, m.move.y);
      break;
    }
    case cmd::update: {
      //todo
      break;
    };
    default:
      break;
  }

  printf("buffer: %s\n", buf);

  if(buf) {
    std::string str(buf);
    return str;
  }
  else {
    return "";
  }
}

#ifdef TEST_MSGPARSER
//Additional dependency files
//deps:
//Required cflags (autoconf vars may be used)
//cflags:
//Required link options (autoconf vars may be used)
//libs:
#include "test.h"

TEST_BEGIN;

// TODO: Put some testcode here (see test.h for usable macros).
TEST_TRUE(false, "No tests yet!");

TEST_END;

#endif/*TEST_MSGPARSER*/