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996
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1 /*
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2 * Copyright (c) 2005 Gregor Richards
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3 *
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4 * This file is part of Glass.
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5 *
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6 * Glass is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 2 of the License, or
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9 * (at your option) any later version.
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10 *
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11 * Glass is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with Glass; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
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20
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21 #include <iostream>
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22 using namespace std;
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23
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24 #include <signal.h>
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28 #include <sys/stat.h>
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29 #include <sys/types.h>
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30 #include <sys/wait.h>
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31 #include <unistd.h>
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32
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33 #include "builtins.h"
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34 #include "func.h"
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35 #include "glass.h"
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36 #include "klass.h"
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37 #include "klassi.h"
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38 #include "parseq.h"
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39 #include "variable.h"
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40
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41 map<string,Variable *> globalVars;
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42
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43 vector<KlassI *> globalInstant;
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44
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45 deque<Variable *> mainStack;
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46
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47 #ifdef IRC
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48 string IRC_o, chan;
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49 unsigned int progTimer;
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50 #define MAXTIME 10000000
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51 void keepalivePing(int ignore);
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52 #define PINGRATE (60*5)
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53 #endif
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54
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55 bool parseI(char *inp, int &i, ParseQ *pq);
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56 void stringParse(string &toparse);
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57 void cacheIt(const char *cachef);
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58 void runIt();
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59 void clearM();
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60
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61 int main(int argc, char **argv, char **envp)
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62 {
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63 char *input, *bins;
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64 FILE *fin;
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65 int fini;
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66 struct stat sbuf;
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67 int i = 0, j;
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68 ParseQ *master;
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69 string eval;
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70 map<string,Variable *>::iterator svari;
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71
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72 // first read in builtins
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73 bins = strdup(builtinDefinitions);
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74 if (bins) {
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75 master = new ParseQ();
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76 i = 0;
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77 while (parseI(bins, i, master));
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78 master->parseKlasses();
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79 delete master;
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80 free(bins);
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81 }
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82
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83 #ifndef IRC
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84 if (argc < 2) {
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85 fprintf(stderr, "Use: glass [cache] <input>\n");
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86 return 1;
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87 }
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88
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89 // non-IRC gets environment variables
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90 for (i = 0; envp[i]; i++) {
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91 for (j = 0; envp[i][j] && envp[i][j] != '='; j++);
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92 if (!envp[i][j]) continue;
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93 eval = envp[i];
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94 globalVars["Env" + eval.substr(0, j)] = new Variable(VAR_STRING, eval.substr(j + 1));
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95 }
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96
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97 #else
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98 if (argc < 5) {
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99 cout << "Use: glass <cachefile> <username> <master> <channel>" << endl;
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100 return 1;
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101 }
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102 #endif
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103
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104 for (j = 1; argv[j]; j++) {
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105 // open the file ...
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106 fin = fopen(argv[j], "r");
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107 if (!fin) continue;
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108
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109 // get the size ...
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110 fini = fileno(fin);
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111 if (fstat(fini, &sbuf) == -1) continue;
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112
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113 // allocate
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114 input = (char *) malloc(sbuf.st_size + 2);
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115 input[sbuf.st_size] = '\0';
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116
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117 // read
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118 if (fread(input, 1, sbuf.st_size, fin) < 0) continue;
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119
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120 // parse
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121 master = new ParseQ();
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122 i = 0;
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123 while (parseI(input, i, master));
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124 master->parseKlasses();
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125 delete master;
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126
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127 // free
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128 free(input);
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129
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130 // if this is our cache file, ignore the M
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131 if (j == 1 && argv[2]) {
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132 clearM();
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133 }
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134 }
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135
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136 #ifndef IRC
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137 // cache if necessary
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138 if (argv[2]) cacheIt(argv[1]);
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139
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140 // if we're not in IRC mode, this is the file to run
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141 runIt();
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142 #else
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143 // IRC
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144
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145 char line[32257];
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146 string sline;
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147 line[32256] = '\0';
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148 int mode = 0;
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149 chan = argv[4];
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150
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151 // schedule keepalive pings
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152 signal(14, keepalivePing);
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153 alarm(PINGRATE);
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154
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155 // fix our cache (which will probably have a faulty M in it)
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156 clearM();
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157
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158 while (true) {
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159 line[0] = '\0';
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160 while (!fgets(line, 1024, stdin)) {
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161 // we can't use sleep() directly due to alarm()
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162 int pid = fork();
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163 if (pid == 0) {
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164 sleep(1);
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165 exit(0);
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166 } else if (pid > 0) {
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167 wait(NULL);
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168 }
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169 }
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170 sline = line;
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171 cout << sline << endl;
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172
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173 if (sline.substr(0, 5) == "PING ") {
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174 cerr << "PONG :localhost\r\n";
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175 continue;
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176 }
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177
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178 switch (mode) {
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179 case 0:
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180 // tell it our nick
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181 cerr << "USER " << argv[2] << " localhost localhost :GlassBot\r\n";
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182 cerr << "NICK " << argv[2] << "\r\n";
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183 mode++;
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184 break;
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185
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186 case 1:
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187 // join the channel
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188 cerr << "JOIN #" << chan << "\r\n";
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189 mode++;
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190 break;
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191
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192 case 2:
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193 // the real heavy lifting
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194 if (sline[0] == ':') {
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195 unsigned int ui;
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196 unsigned int gloc = 0;
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197 string sender, retsend;
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198
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199 // parse for the !
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200 for (ui = 0; ui < sline.length() && sline[ui] != '!' && sline[ui] != ' '; ui++);
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201 if (ui == sline.length()) continue;
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202 // get the sender
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203 sender = sline.substr(1, ui - 1);
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204
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205 // parse for the space
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206 for (; ui < sline.length() && sline[ui] != ' '; ui++);
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207 if (ui == sline.length()) continue;
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208 sline = sline.substr(ui + 1);
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209
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210 // it should be "PRIVMSG <something> :G!..."
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211 if (sline.substr(0, 8) == "PRIVMSG " &&
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212 (gloc = sline.find(":G!", 0)) != string::npos) {
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213 // where should we return it to?
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214 retsend = sline.substr(8, gloc - 9);
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215 if (retsend[0] != '#') {
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216 // send it to the sender
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217 retsend = sender;
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218 }
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219
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220 // we only need what's after G!
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221 sline = sline.substr(gloc + 3);
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222 strcpy(line, sline.c_str());
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223
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224 // maybe it's a URL
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225 if (sline[0] == 'U') {
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226 sline = sline.substr(1);
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227 strcpy(line, sline.c_str());
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228
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229 // make sure the URL is good
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230 for (ui = 0; line[ui]; ui++) {
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231 switch (line[ui]) {
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232 case '\r':
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233 case '\n':
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234 case '?':
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235 line[ui] = '\0';
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236 break;
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237 }
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238 }
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239 if (strncmp(line, "http://", 7)) {
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240 line[0] = '\0';
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241 }
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242
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243 // fork off a pid to do lynx --dump
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244 int urli[2], pid;
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245 pipe(urli);
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246 pid = fork();
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247 if (pid == 0) {
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248 dup2(urli[1], 1);
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249 dup2(urli[1], 2);
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250 execlp("lynx", "lynx", "--dump", line,
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251 "-connect_timeout", "15", NULL);
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252 exit(0);
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253 } else if (pid >= 0) {
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254 read(urli[0], line, 32256);
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255 wait(NULL);
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256 }
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257 close(urli[0]);
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258 close(urli[1]);
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259 }
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260
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261 // we now have our input, parse!
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262 master = new ParseQ();
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263 i = 0;
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264 while (parseI(line, i, master));
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265 master->parseKlasses();
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266 delete master;
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267
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268 // reset any destroyed builtins
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269 bins = strdup(builtinDefinitions);
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270 if (bins) {
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271 master = new ParseQ();
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272 i = 0;
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273 while (parseI(bins, i, master));
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274 master->parseKlasses();
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275 delete master;
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276 free(bins);
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277 }
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278
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279 cacheIt(argv[1]);
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280 runIt();
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281
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282 // display the output
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283 if (IRC_o != "") {
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284 // get rid of possible injections
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285 for (ui = 0; ui < IRC_o.length(); ui++) {
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286 switch (IRC_o[ui]) {
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287 case '\n':
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288 case '\r':
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289 IRC_o[ui] = ' ';
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290 break;
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291 }
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292 }
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293 alarm(0);
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294 // allow our master to do raw sending
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295 if (sender == argv[3] && IRC_o[0] == '^') {
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296 cerr << IRC_o.substr(1) << "\r\n";
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297 } else {
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298 // max of 400 chars (about)
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299 if (IRC_o.length() > 400) {
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300 IRC_o = IRC_o.substr(0, 393) + " Flood!";
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301 }
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302 cerr << "PRIVMSG " << retsend << " :" << IRC_o << "\r\n";
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303 }
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304 alarm(PINGRATE);
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305 }
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306
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307 // then garbage collection
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308 for (ui = 0; ui < globalInstant.size(); ui++) {
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309 delete globalInstant[ui];
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310 }
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311 globalInstant.clear();
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312 for (ui = 0; ui < mainStack.size(); ui++) {
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313 delete mainStack[ui];
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314 }
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315 mainStack.clear();
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316 clearM();
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317 /* we have to keep a vector of strings to properly erase globalVars,
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318 * otherwise we'll end up messing up the iterator mid-loop */
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319 vector<string> todel;
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320 for (svari = globalVars.begin(); svari != globalVars.end(); svari++) {
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321 if (svari->second->type != VAR_KLASS) {
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322 // any user global variables are deleted
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323 delete svari->second;
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324 todel.push_back(svari->first);
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325 }
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326 }
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327 for (ui = 0; ui < todel.size(); ui++) {
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328 globalVars.erase(todel[ui]);
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329 }
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330 todel.clear();
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331 }
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332 }
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333 break;
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334 }
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335 }
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336 #endif
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337
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338 return 0;
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339 }
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340
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341 bool parseI(char *inp, int &i, ParseQ *pq)
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342 {
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343 int j;
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344
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345 // this function stops iterating at inp[i] == '\0'
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346 if (!inp[i]) return false;
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347
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348 if (inp[i] >= 'A' && inp[i] <= 'Z') {
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349 pq->add(new ParseQElement(PQT_GLOBAL, inp[i]));
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350 } else if (inp[i] >= 'a' && inp[i] <= 'z') {
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351 pq->add(new ParseQElement(PQT_CLASSWIDE, inp[i]));
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352 } else if (inp[i] >= '0' && inp[i] <= '9') {
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353 pq->add(new ParseQElement(PQT_STACK, inp[i]));
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354 } else if (inp[i] == '(') {
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355 i++;
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356 for (j = i; inp[j] && inp[j] != ')'; j++);
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357 if (!inp[j]) {
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358 // ERROR
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359 return false;
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360 }
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361
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362 // now we're at the )
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363 inp[j] = '\0';
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364 // now some sub-parsing
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365 if (inp[i] >= 'A' && inp[i] <= 'Z') {
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366 pq->add(new ParseQElement(PQT_GLOBAL, inp + i));
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367 } else if (inp[i] >= 'a' && inp[i] <= 'z') {
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368 pq->add(new ParseQElement(PQT_CLASSWIDE, inp + i));
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369 } else if (inp[i] >= '0' && inp[i] <= '9') {
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370 pq->add(new ParseQElement(PQT_STACK, inp + i));
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371 } else if (inp[i] == '_') {
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372 pq->add(new ParseQElement(PQT_LOCAL, inp + i));
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373 }
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374 i = j;
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375 } else if (inp[i] == '"') {
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376 // push a string
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377 i++;
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378 for (j = i; inp[j] && inp[j] != '"'; j++);
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379 if (!inp[j]) {
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380 // ERROR
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381 return false;
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382 }
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383
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384 // now we're on the ending "
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385 inp[j] = '\0';
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386 string tomk = inp + i;
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387
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388 stringParse(tomk);
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389
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390 pq->add(new ParseQElement(PQT_STRING, tomk));
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391 i = j;
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392 } else if (inp[i] == '<') {
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393 // push a number
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394 i++;
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395 for (j = i; inp[j] && inp[j] != '>'; j++);
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396 if (!inp[j]) {
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397 // ERROR
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398 return false;
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399 }
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400
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401 // now we're on the >
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402 inp[j] = '\0';
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403 pq->add(new ParseQElement(PQT_NUMBER, inp + i));
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404 i = j;
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405 } else if (inp[i] == '~') {
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406 // special, builtin
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407 i++;
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408 for (j = i; inp[j] && inp[j] != '~'; j++);
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409 if (!inp[j]) {
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410 // ERROR
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411 return false;
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412 }
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413
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414 // now we're on the ending "
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415 inp[j] = '\0';
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416 pq->add(new ParseQElement(PQT_BUILTIN, inp + i));
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417 i = j;
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418 } else if (inp[i] == '\'') {
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419 // comment
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420 i++;
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421 for (; inp[i] && inp[i] != '\''; i++);
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422 if (!inp[i]) {
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423 // ERROR
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424 return false;
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425 }
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426 } else if (inp[i] != ' ' && inp[i] != '\t' &&
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427 inp[i] != '\n' && inp[i] != '\r') {
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428 // the rest are all commands (or ignorable non-commands)
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429 pq->add(new ParseQElement(PQT_COMMAND, inp[i]));
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430 }
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|
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431 i++;
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432 return true;
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433 }
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434
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435 void stringParse(string &toparse)
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436 {
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|
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437 unsigned int i;
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438
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439 for (i = 0; i < toparse.length(); i++) {
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440 if (toparse[i] == '\\') {
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|
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441 switch (toparse[i+1]) {
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442 case 'n':
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443 toparse.replace(i, 2, string("\n"));
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444 break;
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445
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446 default:
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447 toparse.replace(i, 2, toparse.substr(i + 1, 1));
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448 }
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449 }
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|
450 }
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451 }
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|
|
452
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|
|
453 Variable *getVar(KlassI *klass, map<string,Variable *> *locals, string name)
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454 {
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|
455 // what type of var?
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456 char fchar = name[0];
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457 if (fchar >= 'A' && fchar <= 'Z') {
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|
458 // global
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459 if (globalVars.find(name) == globalVars.end()) {
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460 globalVars[name] = new Variable();
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|
461 }
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462 return globalVars[name];
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463 } else if (fchar >= 'a' && fchar <= 'z') {
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464 // classwide
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465 if (klass->vars.find(name) == klass->vars.end()) {
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|
466 klass->vars[name] = new Variable();
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|
|
467 // check if it's a function that hasn't been allocated in the klassi due to lazy allocation
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|
|
468 if (klass->of->functions.find(name) != klass->of->functions.end()) {
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|
|
469 klass->vars[name]->type = VAR_FUNC;
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|
|
470 klass->vars[name]->fval = klass->of->functions[name];
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|
471 }
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|
|
472 }
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|
|
473 return klass->vars[name];
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|
|
474 } else if (fchar == '_') {
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|
|
475 // local
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|
|
476 if (locals->find(name) == locals->end()) {
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|
|
477 (*locals)[name] = new Variable();
|
|
|
478 }
|
|
|
479 return (*locals)[name];
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|
|
480 } else {
|
|
|
481 // ERROR
|
|
|
482 exit(2);
|
|
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486 #ifdef IRC
|
|
|
487 void keepalivePing(int ignore)
|
|
|
488 {
|
|
|
489 cerr << "PING :localhost\r\n";
|
|
|
490 alarm(PINGRATE);
|
|
|
491 }
|
|
|
492 #endif
|
|
|
493
|
|
|
494
|
|
|
495 void cacheIt(const char *cachef)
|
|
|
496 {
|
|
|
497 FILE *fin;
|
|
|
498 map<string,Variable *>::iterator svari;
|
|
|
499
|
|
|
500 // cache it
|
|
|
501 fin = fopen(cachef, "w");
|
|
|
502 if (fin) {
|
|
|
503 Klass *curklass;
|
|
|
504 map<string,Func *>::iterator fvari;
|
|
|
505 for (svari = globalVars.begin(); svari != globalVars.end(); svari++) {
|
|
|
506 // for each klass ...
|
|
|
507 if (svari->second->type == VAR_KLASS) {
|
|
|
508 // write the name ...
|
|
|
509 fputs("{(", fin);
|
|
|
510 fputs(svari->first.c_str(), fin);
|
|
|
511 fputs(")", fin);
|
|
|
512 curklass = svari->second->kval;
|
|
|
513 // for each function ...
|
|
|
514 for (fvari = curklass->functions.begin(); fvari !=
|
|
|
515 curklass->functions.end(); fvari++) {
|
|
|
516 string cont;
|
|
|
517 // write the name ...
|
|
|
518 fputs("[(", fin);
|
|
|
519 fputs(fvari->second->name.c_str(), fin);
|
|
|
520 fputs(")", fin);
|
|
|
521 // and the content
|
|
|
522 cont = fvari->second->contents->dump();
|
|
|
523 fputs(cont.c_str(), fin);
|
|
|
524 // and close it
|
|
|
525 fputs("]", fin);
|
|
|
526 }
|
|
|
527 // close it
|
|
|
528 fputs("}", fin);
|
|
|
529 }
|
|
|
530 }
|
|
|
531 fclose(fin);
|
|
|
532 }
|
|
|
533 }
|
|
|
534
|
|
|
535 void runIt()
|
|
|
536 {
|
|
|
537 // now run M.m
|
|
|
538 Variable *Mvar;
|
|
|
539 Klass *M;
|
|
|
540 KlassI *MI;
|
|
|
541 if (globalVars.find("M") == globalVars.end()) {
|
|
|
542 #ifndef IRC
|
|
|
543 cout << "OK" << endl;
|
|
|
544 return;
|
|
|
545 #else
|
|
|
546 IRC_o = "";
|
|
|
547 cerr << "PRIVMSG #" << chan << " :OK\r\n" << endl;
|
|
|
548 return;
|
|
|
549 #endif
|
|
|
550 }
|
|
|
551 Mvar = globalVars["M"];
|
|
|
552
|
|
|
553 if (Mvar->type != VAR_KLASS) {
|
|
|
554 #ifndef IRC
|
|
|
555 cout << "OK" << endl;
|
|
|
556 return;
|
|
|
557 #else
|
|
|
558 IRC_o = "";
|
|
|
559 cerr << "PRIVMSG #" << chan << " :OK\r\n" << endl;
|
|
|
560 return;
|
|
|
561 #endif
|
|
|
562 }
|
|
|
563
|
|
|
564 M = Mvar->kval;
|
|
|
565 MI = new KlassI();
|
|
|
566 globalVars["MI"] = new Variable(VAR_KLASSI, MI);
|
|
|
567 MI->of = M;
|
|
|
568
|
|
|
569 // now make sure M.m exists
|
|
|
570 if (M->functions.find("m") == M->functions.end()) {
|
|
|
571 cout << "NO M.m!" << endl;
|
|
|
572 return;
|
|
|
573 }
|
|
|
574
|
|
|
575 // and run it
|
|
|
576 #ifdef IRC
|
|
|
577 IRC_o = "";
|
|
|
578 progTimer = MAXTIME;
|
|
|
579 #endif
|
|
|
580 M->functions["m"]->contents->runFunc(MI, M->functions["m"]);
|
|
|
581 }
|
|
|
582
|
|
|
583 void clearM()
|
|
|
584 {
|
|
|
585 if (globalVars.find("MI") != globalVars.end()) {
|
|
|
586 if (globalVars["MI"]->type == VAR_KLASSI) {
|
|
|
587 delete globalVars["MI"]->kival;
|
|
|
588 delete globalVars["MI"];
|
|
|
589 globalVars.erase("MI");
|
|
|
590 }
|
|
|
591 }
|
|
|
592
|
|
|
593 if (globalVars.find("M") != globalVars.end()) {
|
|
|
594 if (globalVars["M"]->type == VAR_KLASS) {
|
|
|
595 delete globalVars["M"]->kval;
|
|
|
596 delete globalVars["M"];
|
|
|
597 globalVars.erase("M");
|
|
|
598 }
|
|
|
599 }
|
|
|
600 }
|
