4 #include <acess/sys.h>
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9 #include <readline.h>
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12 typedef struct sServer {
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13 struct sServer *Next;
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15 char InBuf[BUFSIZ+1];
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20 typedef struct sMessage
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22 struct sMessage *Next;
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26 char *Source; // Pointer into `Data`
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30 typedef struct sWindow
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32 struct sWindow *Next;
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34 tServer *Server; //!< Canoical server (can be NULL)
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36 char Name[]; // Channel name / remote user
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42 MSG_TYPE_SERVER, // Server message
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44 MSG_TYPE_NOTICE, // NOTICE command
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45 MSG_TYPE_JOIN, // JOIN command
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46 MSG_TYPE_PART, // PART command
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47 MSG_TYPE_QUIT, // QUIT command
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49 MSG_TYPE_STANDARD, // Standard line
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50 MSG_TYPE_ACTION, // /me
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55 // === PROTOTYPES ===
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56 int ParseArguments(int argc, const char *argv[]);
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57 int ParseUserCommand(char *String);
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59 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber);
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60 tMessage *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...);
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61 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message);
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62 tWindow *Window_Create(tServer *Server, const char *Name);
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63 void Redraw_Screen(void);
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65 int ProcessIncoming(tServer *Server);
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67 int SetCursorPos(int Row, int Col);
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68 int writef(int FD, const char *Format, ...);
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69 int OpenTCP(const char *AddressString, short PortNumber);
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70 char *GetValue(char *Str, int *Ofs);
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71 static inline int isdigit(int ch);
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74 char *gsUsername = "user";
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75 char *gsHostname = "acess";
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76 char *gsRealName = "Acess2 IRC Client";
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77 char *gsNickname = "acess";
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79 tWindow gWindow_Status = {
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80 NULL, NULL, NULL, // No next, empty list, no server
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81 0, "" // No activity, empty name (rendered as status)
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83 tWindow *gpWindows = &gWindow_Status;
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84 tWindow *gpCurrentWindow = &gWindow_Status;
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85 int giTerminal_Width = 80;
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86 int giTerminal_Height = 25;
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89 void ExitHandler(void)
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91 printf("\x1B[?1047l");
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95 int main(int argc, const char *argv[], const char *envp[])
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98 tReadline *readline_info;
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100 // Parse Command line
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101 if( (tmp = ParseArguments(argc, argv)) ) return tmp;
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103 atexit(ExitHandler);
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105 giTerminal_Width = ioctl(1, 5, NULL); // getset_width
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106 giTerminal_Height = ioctl(1, 6, NULL); // getset_height
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108 printf("\x1B[?1047h");
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109 printf("\x1B[%i;%ir", 0, giTerminal_Height-1);
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111 SetCursorPos(giTerminal_Height-1, 0);
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112 printf("[(status)] ");
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114 // HACK: Static server entry
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115 // UCC (University [of Western Australia] Computer Club) IRC Server
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116 // gWindow_Status.Server = Server_Connect( "UCC", "130.95.13.18", 6667 );
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117 gWindow_Status.Server = Server_Connect( "Freenode", "89.16.176.16", 6667 );
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118 // gWindow_Status.Server = Server_Connect( "Host", "10.0.2.2", 6667 );
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119 // gWindow_Status.Server = Server_Connect( "BitlBee", "192.168.1.34", 6667 );
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121 if( !gWindow_Status.Server )
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124 SetCursorPos(giTerminal_Height-1, 0);
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125 printf("[(status)] ");
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126 readline_info = Readline_Init(1);
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130 fd_set readfds, errorfds;
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135 FD_ZERO(&errorfds);
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136 FD_SET(0, &readfds); // stdin
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138 // Fill server FDs in fd_set
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139 for( srv = gpServers; srv; srv = srv->Next )
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141 FD_SET(srv->FD, &readfds);
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142 FD_SET(srv->FD, &errorfds);
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143 if( srv->FD > maxFD )
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147 rv = select(maxFD+1, &readfds, 0, &errorfds, NULL);
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148 if( rv == -1 ) break;
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150 if(FD_ISSET(0, &readfds))
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153 char *cmd = Readline_NonBlock(readline_info);
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158 ParseUserCommand(cmd);
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162 SetCursorPos(giTerminal_Height-1, 0);
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163 printf("\x1B[K"); // Clear line
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164 if( gpCurrentWindow->Name[0] )
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165 printf("[%s:%s] ", gpCurrentWindow->Server->Name, gpCurrentWindow->Name);
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167 printf("[(status)] ");
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172 for( srv = gpServers; srv; srv = srv->Next )
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174 if(FD_ISSET(srv->FD, &readfds))
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176 if( ProcessIncoming(srv) != 0 ) {
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182 if(FD_ISSET(srv->FD, &errorfds))
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194 for( srv = gpServers; srv; srv = srv->Next )
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201 * \todo Actually implement correctly :)
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203 int ParseArguments(int argc, const char *argv[])
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208 int ParseUserCommand(char *String)
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210 if( String[0] == '/' )
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215 command = GetValue(String, &pos);
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217 if( strcmp(command, "/join") == 0 )
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219 char *channel_name = GetValue(String, &pos);
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221 if( gpCurrentWindow->Server )
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223 writef(gpCurrentWindow->Server->FD, "JOIN :%s\n", channel_name);
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226 else if( strcmp(command, "/quit") == 0 )
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228 char *quit_message = String + pos;
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231 if( quit_message == NULL || quit_message[0] == '\0' )
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232 quit_message = "/quit - Acess2 IRC Client";
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234 for( srv = gpServers; srv; srv = srv->Next )
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236 writef(srv->FD, "QUIT :%s\n", quit_message);
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241 else if( strcmp(command, "/window") == 0 || strcmp(command, "/win") == 0 || strcmp(command, "/w") == 0 )
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243 char *window_id = GetValue(String, &pos);
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244 int window_num = atoi(window_id);
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246 if( window_num > 0 )
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249 window_num --; // Move to base 0
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250 // Get `window_num`th window
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251 for( win = gpWindows; win && window_num--; win = win->Next );
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253 gpCurrentWindow = win;
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256 // Otherwise, silently ignore
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262 for( win = gpWindows; win; win = win->Next, window_num ++ )
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264 if( win->Name[0] ) {
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265 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",
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266 "%i: %s/%s", window_num, win->Server->Name, win->Name);
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269 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "",
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270 "%i: (status)", window_num);
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277 Message_AppendF(NULL, MSG_TYPE_SERVER, "client", "", "Unknown command %s", command);
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283 // - Only send if server is valid and window name is non-empty
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284 if( gpCurrentWindow->Server && gpCurrentWindow->Name[0] )
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286 Message_Append(gpCurrentWindow->Server, MSG_TYPE_STANDARD,
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287 gsNickname, gpCurrentWindow->Name, String);
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288 writef(gpCurrentWindow->Server->FD,
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289 "PRIVMSG %s :%s\n", gpCurrentWindow->Name,
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299 * \brief Connect to a server
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301 tServer *Server_Connect(const char *Name, const char *AddressString, short PortNumber)
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305 ret = calloc(1, sizeof(tServer) + strlen(Name) + 1);
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307 strcpy(ret->Name, Name);
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309 // Connect to the remove server
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310 ret->FD = OpenTCP( AddressString, PortNumber );
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311 if( ret->FD == -1 ) {
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312 fprintf(stderr, "%s: Unable to create socket\n", Name);
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316 // Append to open list
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317 ret->Next = gpServers;
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320 // Read some initial data
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321 Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Connection opened");
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322 ProcessIncoming(ret);
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325 writef(ret->FD, "USER %s %s %s : %s\n", gsUsername, gsHostname, AddressString, gsRealName);
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326 writef(ret->FD, "NICK %s\n", gsNickname);
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327 Message_Append(NULL, MSG_TYPE_SERVER, Name, "", "Identified");
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328 //printf("%s: Identified\n", Name);
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333 tMessage *Message_AppendF(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message, ...)
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337 va_start(args, Message);
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338 len = vsnprintf(NULL, 1000, Message, args);
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341 vsnprintf(buf, len+1, Message, args);
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342 return Message_Append(Server, Type, Source, Dest, buf);
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346 tMessage *Message_Append(tServer *Server, int Type, const char *Source, const char *Dest, const char *Message)
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349 tWindow *win = NULL;
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350 int msgLen = strlen(Message);
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352 // NULL servers are internal messages
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353 if( Server == NULL || Source[0] == '\0' )
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355 win = &gWindow_Status;
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357 // Determine if it's a channel or PM message
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358 else if( Dest[0] == '#' || Dest[0] == '&' ) // TODO: Better determining here
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360 for(win = gpWindows; win; win = win->Next)
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362 if( win->Server == Server && strcmp(win->Name, Dest) == 0 )
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368 win = Window_Create(Server, Dest);
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372 else if( strcmp(Dest, Server->Nick) != 0 )
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374 // Umm... message for someone who isn't us?
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375 win = &gWindow_Status; // Stick it in the status window, just in case
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379 else if( strchr(Source, '.') ) // TODO: And again, less hack please
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382 for(win = gpWindows; win; win = win->Next)
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384 if( win->Server == Server && strcmp(win->Name, Source) == 0 )
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391 win = &gWindow_Status;
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398 for(win = gpWindows; win; win = win->Next)
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400 if( win->Server == Server && strcmp(win->Name, Source) == 0 )
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406 win = Window_Create(Server, Dest);
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410 ret = malloc( sizeof(tMessage) + msgLen + 1 + strlen(Source) + 1 );
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411 ret->Source = ret->Data + msgLen + 1;
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412 strcpy(ret->Source, Source);
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413 strcpy(ret->Data, Message);
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415 ret->Server = Server;
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417 // TODO: Append to window message list
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418 ret->Next = win->Messages;
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419 win->Messages = ret;
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421 //TODO: Set location
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424 int pos = SetCursorPos(giTerminal_Height-2, 0);
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425 if( win == gpCurrentWindow ) {
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426 int prefixlen = strlen(Source) + 3;
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427 int avail = giTerminal_Width - prefixlen;
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428 int msglen = strlen(Message);
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429 printf("\x1B[T"); // Scroll down 1 (free space below)
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430 printf("[%s] %.*s\n", Source, avail, Message);
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431 while( msglen > avail ) {
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435 SetCursorPos(giTerminal_Height-2, prefixlen);
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436 printf("%.*s\n", avail, Message);
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439 SetCursorPos(-1, pos);
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445 tWindow *Window_Create(tServer *Server, const char *Name)
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447 tWindow *ret, *prev = NULL;
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450 // Get the end of the list
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451 // TODO: Cache this instead
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452 for( ret = gpCurrentWindow; ret; prev = ret, ret = ret->Next )
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455 ret = malloc(sizeof(tWindow) + strlen(Name) + 1);
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456 ret->Messages = NULL;
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457 ret->Server = Server;
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458 ret->ActivityLevel = 1;
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459 strcpy(ret->Name, Name);
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462 ret->Next = prev->Next;
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465 else { // Shouldn't happen really
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466 ret->Next = gpWindows;
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470 // printf("Win %i %s:%s created\n", num, Server->Name, Name);
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475 void Redraw_Screen(void)
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480 printf("\x1B[2J"); // Clear screen
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481 printf("\x1B[0;0H"); // Reset cursor
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483 msg = gpCurrentWindow->Messages;
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485 // TODO: Title bar?
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487 // Note: This renders from the bottom up
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488 for( y = giTerminal_Height - 1; y -- && msg; msg = msg->Next)
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490 int msglen = strlen(msg->Data);
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491 int prefix_len = 3 + strlen(msg->Source);
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492 int line_avail = giTerminal_Width - prefix_len;
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493 int i = 0, done = 0;
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495 y -= msglen / line_avail; // Extra lines (y-- above handles the 1 line case)
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496 SetCursorPos(y, 0);
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497 printf("[%s] ", msg->Source);
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499 while(done < msglen) {
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500 done += printf("%.*s", line_avail, msg->Data+done);
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502 SetCursorPos(y+i, prefix_len);
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506 // Bottom line is rendered by the prompt
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509 void Cmd_PRIVMSG(tServer *Server, const char *Dest, const char *Src, const char *Message)
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511 Message_Append(Server, MSG_TYPE_STANDARD, Dest, Src, Message);
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512 //printf("<%s:%s:%s> %s\n", Server->Name, Dest, Src, Message);
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517 void ParseServerLine(tServer *Server, char *Line)
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522 _SysDebug("Server %s: Line = %s", Server->Name, Line);
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527 ident = GetValue(Line, &pos); // Ident (user or server)
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528 cmd = GetValue(Line, &pos);
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531 if( isdigit(cmd[0]) && isdigit(cmd[1]) && isdigit(cmd[2]) )
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533 char *user, *message;
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535 num = (cmd[0] - '0') * 100;
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536 num += (cmd[1] - '0') * 10;
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537 num += (cmd[2] - '0') * 1;
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539 user = GetValue(Line, &pos);
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541 if( Line[pos] == ':' ) {
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542 message = Line + pos + 1;
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545 message = GetValue(Line, &pos);
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550 case 353: // /NAMES list
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551 // <user> = <channel> :list
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552 // GetValue(Line, &pos); // '='
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553 user = GetValue(Line, &pos); // Actually channel
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554 message = Line + pos + 1; // List
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555 Message_AppendF(Server, MSG_TYPE_SERVER, user, "", "Names: %s", message);
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557 case 366: // end of /NAMES list
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558 // <user> <channel> :msg
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560 message = Line + pos + 1;
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561 Message_Append(Server, MSG_TYPE_SERVER, user, "", message);
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563 case 372: // MOTD Data
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564 case 376: // MOTD End
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567 //printf("[%s] %i %s\n", Server->Name, num, message);
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568 Message_Append(Server, MSG_TYPE_SERVER, ident, user, message);
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572 else if( strcmp(cmd, "NOTICE") == 0 )
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574 char *class, *message;
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576 class = GetValue(Line, &pos);
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577 _SysDebug("NOTICE class='%s'", class);
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579 if( Line[pos] == ':' ) {
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580 message = Line + pos + 1;
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583 message = GetValue(Line, &pos);
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586 //printf("[%s] NOTICE %s: %s\n", Server->Name, ident, message);
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587 Message_Append(Server, MSG_TYPE_NOTICE, ident, "", message);
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589 else if( strcmp(cmd, "PRIVMSG") == 0 )
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591 char *dest, *message;
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592 dest = GetValue(Line, &pos);
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594 if( Line[pos] == ':' ) {
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595 message = Line + pos + 1;
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598 message = GetValue(Line, &pos);
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600 // Cmd_PRIVMSG(Server, dest, ident, message);
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601 Message_Append(Server, MSG_TYPE_STANDARD, ident, dest, message);
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603 else if( strcmp(cmd, "JOIN" ) == 0 )
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606 channel = GetValue(Line, &pos) + 1;
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607 Window_Create(Server, channel);
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611 Message_AppendF(Server, MSG_TYPE_SERVER, "", "", "Unknown message %s (%s)\n", cmd, Line+pos);
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615 cmd = GetValue(Line, &pos);
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617 if( strcmp(cmd, "PING") == 0 ) {
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618 writef(Server->FD, "PONG %s\n", gsHostname);
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622 // Command to client
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623 Message_AppendF(NULL, MSG_TYPE_UNK, "", "", "Client Command: %s", Line);
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629 * \brief Process incoming lines from the server
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631 int ProcessIncoming(tServer *Server)
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633 char *ptr, *newline;
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636 // While there is data in the buffer, read it into user memory and
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637 // process it line by line
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638 // ioctl#8 on a TCP client gets the number of bytes in the recieve buffer
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639 // - Used to avoid blocking
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641 while( (len = ioctl(Server->FD, 8, NULL)) > 0 )
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645 len = read(Server->FD, &Server->InBuf[Server->ReadPos], BUFSIZ - Server->ReadPos);
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649 Server->InBuf[Server->ReadPos + len] = '\0';
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651 // Break into lines
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652 ptr = Server->InBuf;
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653 while( (newline = strchr(ptr, '\n')) )
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656 if( newline[-1] == '\r' ) newline[-1] = '\0';
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657 ParseServerLine(Server, ptr);
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661 // Handle incomplete lines
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662 if( ptr - Server->InBuf < len + Server->ReadPos ) {
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663 // Update the read position
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664 // InBuf ReadPos ptr ReadPos+len
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665 // | old | new used | new unused |
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666 Server->ReadPos = len + Server->ReadPos - (ptr - Server->InBuf);
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667 // Copy stuff back (moving "new unused" to the start of the buffer)
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668 memcpy(Server->InBuf, ptr, Server->ReadPos);
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671 Server->ReadPos = 0;
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681 * \brief Write a formatted string to a file descriptor
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684 int writef(int FD, const char *Format, ...)
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689 va_start(args, Format);
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690 len = vsnprintf(NULL, 1000, Format, args);
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695 va_start(args, Format);
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696 vsnprintf(buf, len+1, Format, args);
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699 return write(FD, buf, len);
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704 * \brief Initialise a TCP connection to \a AddressString on port \a PortNumber
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706 int OpenTCP(const char *AddressString, short PortNumber)
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709 char addrBuffer[8];
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711 // Parse IP Address
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712 addrType = Net_ParseAddress(AddressString, addrBuffer);
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713 if( addrType == 0 ) {
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714 fprintf(stderr, "Unable to parse '%s' as an IP address\n", AddressString);
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715 _SysDebug("Unable to parse '%s' as an IP address\n", AddressString);
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719 // Finds the interface for the destination address
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720 fd = Net_OpenSocket(addrType, addrBuffer, "tcpc");
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722 fprintf(stderr, "Unable to open TCP Client to '%s'\n", AddressString);
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723 _SysDebug("Unable to open TCP client to '%s'\n", AddressString);
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727 // Set remote port and address
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728 // printf("Setting port and remote address\n");
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729 ioctl(fd, 5, &PortNumber);
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730 ioctl(fd, 6, addrBuffer);
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733 // printf("Initiating connection\n");
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734 if( ioctl(fd, 7, NULL) == 0 ) {
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735 // Shouldn't happen :(
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736 fprintf(stderr, "Unable to start connection\n");
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740 // Return descriptor
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745 * \brief Read a space-separated value from a string
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747 char *GetValue(char *Src, int *Ofs)
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750 char *ret = Src + pos;
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753 if( !Src ) return NULL;
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755 while( *ret == ' ' ) ret ++;
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757 end = strchr(ret, ' ');
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762 end = ret + strlen(ret) - 1;
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766 while( *ret == ' ' ) end ++;
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772 int SetCursorPos(int Row, int Col)
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776 Row = Col / giTerminal_Width;
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777 Col = Col % giTerminal_Width;
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779 rv = ioctl(1, 9, NULL); // Ugh, constants
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780 printf("\x1B[%i;%iH", Col, Row);
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784 static inline int isdigit(int ch)
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786 return '0' <= ch && ch < '9';
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