StrCommandHandler.cpp

00001 #include "StrCommandHandler.h"
00002 
00003 char const * const StrCommandHandler::ARROW_UP   = "\x1b\x5b\x41";
00004 char const * const StrCommandHandler::ARROW_DOWN = "\x1b\x5b\x42";
00005 char const * const StrCommandHandler::ARROW_RIGHT= "\x1b\x5b\x43";
00006 char const * const StrCommandHandler::ARROW_LEFT = "\x1b\x5b\x44";
00007 
00008 StrCommandHandler::StrCommandHandler (
00009     int const arg_num_ofcommands
00010 ):
00011     m_num_ofcommands(arg_num_ofcommands)
00012 {
00013     m_command_name = new char[m_num_ofcommands][16];
00014     m_function = new (void * (* [m_num_ofcommands])(const char * const));
00015 }
00016 
00017 void StrCommandHandler::map(
00018     const char * const   arg_command,
00019     void * (*arg_pfunc)(const char * const)
00020 )
00021 {
00022     static int itr_push = 0;
00023 
00024 
00025     //  Reallocation
00026     if (itr_push == m_num_ofcommands) {
00027         m_num_ofcommands += 5;
00028         char (*tmp_cm)[16]  = new char[m_num_ofcommands][16];
00029         void * (**tmp_fu)(const char * const)= new (void * (* [m_num_ofcommands])(const char * const));
00030 
00031         memcpy(tmp_cm, m_command_name,  sizeof(char) * (m_num_ofcommands - 5) * 16);
00032         memcpy(tmp_fu, m_function,      sizeof(void * (*)(const char * const)) * (m_num_ofcommands - 5));
00033 
00034         delete[] m_command_name;
00035         delete[] m_function;
00036 
00037         m_command_name  = tmp_cm;
00038         m_function      = tmp_fu;
00039     }
00040 
00041     //  Register the command name
00042     for (int i = 0; i < 16; i++) {
00043         m_command_name[itr_push][i] = arg_command[i];
00044         if (arg_command[i] == '\0') break;
00045     }
00046     m_command_name[itr_push][15] = '\0';
00047 
00048     //  Register the pointer to function
00049     m_function[itr_push] = arg_pfunc;
00050 
00051     itr_push++;
00052 }
00053 
00054 
00055 void * StrCommandHandler::exe(
00056     const char* const   arg_command
00057 )
00058 {
00059     int key = 0;
00060 
00061     //  Exception: NULL pointer
00062     if ( arg_command == NULL) return &(m_rescode = 0xFFFFFFFF);
00063 
00064     //  Exception: Null character
00065     if ( arg_command[0] == '\0') return &(m_rescode = 0xFFFFFFFE);
00066 
00067     //  Exception: Over length of Command's name
00068     for ( int i = 1; i < 16; i++ ) {
00069         if (arg_command[i] == '\0') break;
00070         if (i == 15) return &(m_rescode = 0xFFFFFFFD);
00071     }
00072 
00073     //  Search the command list
00074     while (
00075         key < m_num_ofcommands
00076         &&  strcmp(m_command_name[key], arg_command) != 0
00077     ) {
00078         key++;
00079     }
00080 
00081     //  Exception: Not registered Command
00082     if ( key == m_num_ofcommands ) return &(m_rescode = 0xFFFFFFFC);
00083 
00084     return (*m_function[key])(arg_command);;
00085 }
00086 
00087 void StrCommandHandler::list()
00088 {
00089     puts("\n\n---------------");
00090     puts("---------------\n");
00091     puts("list of command\n");
00092     for(int i = 0; i < m_num_ofcommands; i++) {
00093         if(m_function[i] != NULL) {
00094             printf("%02d: %16s", i, m_command_name[i]);
00095             //printf(" / result: %d", (*m_function[i])());
00096             puts("\n");
00097         }
00098     }
00099     puts("---------------\n");
00100 }