Mercurial > hg > early-roguelike
annotate srogue/options.c @ 113:aa582a02eb5d
srogue: remove unnecessary pointer cast.
Casting char* to int before a comparison doesn't alter the result, and
isn't safe if sizeof(char *) != sizeof(int).
author | John "Elwin" Edwards |
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date | Thu, 27 Mar 2014 11:09:30 -0700 |
parents | 00baf21eb047 |
children | 458df24e973d |
rev | line source |
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1 /* |
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2 * This file has all the code for the option command. |
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3 * |
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4 * @(#)options.c 9.0 (rdk) 7/17/84 |
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5 * |
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6 * Super-Rogue |
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7 * Copyright (C) 1984 Robert D. Kindelberger |
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8 * All rights reserved. |
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9 * |
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10 * Based on "Rogue: Exploring the Dungeons of Doom" |
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman |
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12 * All rights reserved. |
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13 * |
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14 * See the file LICENSE.TXT for full copyright and licensing information. |
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15 */ |
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16 |
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17 #include <termios.h> |
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18 #include <ctype.h> |
60 | 19 #include <string.h> |
36
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20 #include "rogue.h" |
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21 #include "rogue.ext" |
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22 |
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23 extern struct termios terminal; |
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24 |
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25 /* |
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26 * description of an option and what to do with it |
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27 */ |
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28 struct optstruct { |
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29 char *o_name; /* option name */ |
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30 char *o_prompt; /* prompt for interactive entry */ |
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31 char *o_opt; /* pointer to thing to set */ |
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32 }; |
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33 |
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34 typedef struct optstruct OPTION; |
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35 |
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36 int put_str(), get_str(); |
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37 |
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38 OPTION optlist[] = { |
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39 { "name", "Name: ", whoami }, |
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40 { "fruit", "Fruit: ", fruit }, |
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41 { "file", "Save file: ", file_name } |
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42 }; |
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43 #define NUM_OPTS (sizeof optlist / sizeof (OPTION)) |
38
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44 OPTION safeoptlist[] = { |
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45 { "fruit", "Fruit: ", fruit }, |
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46 }; |
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47 #define NUM_SOPTS (sizeof safeoptlist / sizeof (OPTION)) |
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48 |
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49 /* |
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50 * print and then set options from the terminal |
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51 */ |
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52 option() |
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53 { |
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54 reg OPTION *op; |
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55 reg int wh; |
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56 OPTION *olist; |
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57 int olen; |
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58 |
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59 if (use_savedir) { |
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60 olist = safeoptlist; |
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61 olen = NUM_SOPTS; |
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62 } |
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63 else { |
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64 olist = optlist; |
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65 olen = NUM_OPTS; |
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66 } |
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67 |
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68 wclear(hw); |
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69 touchwin(hw); |
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70 /* |
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71 * Display current values of options |
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72 */ |
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73 for (op = olist; op < &olist[olen]; op++) { |
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74 wh = op - olist; |
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75 mvwaddstr(hw, wh, 0, op->o_prompt); |
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76 mvwaddstr(hw, wh, 16, op->o_opt); |
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77 } |
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78 /* |
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79 * Set values |
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80 */ |
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81 wmove(hw, 0, 0); |
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82 for (op = olist; op < &olist[olen]; op++) { |
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83 wmove(hw, op - olist, 16); |
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84 if ((wh = get_str(op->o_opt, hw))) { |
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85 if (wh == QUIT) |
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86 break; |
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87 else if (op > olist) { |
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88 wmove(hw, op - olist, 0); |
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89 op -= 2; |
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90 } |
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91 else { |
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92 putchar(7); |
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93 wmove(hw, 0, 0); |
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94 op -= 1; |
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95 } |
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96 } |
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97 } |
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98 /* |
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99 * Switch back to original screen |
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100 */ |
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101 dbotline(hw,spacemsg); |
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102 restscr(cw); |
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103 after = FALSE; |
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104 } |
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105 |
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106 |
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107 /* |
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108 * get_str: |
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109 * Set a string option |
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110 */ |
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111 #define CTRLB 2 |
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112 get_str(opt, awin) |
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113 char *opt; |
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114 WINDOW *awin; |
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115 { |
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116 reg char *sp; |
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117 reg int c, oy, ox; |
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118 char buf[LINLEN]; |
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119 |
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120 draw(awin); |
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121 getyx(awin, oy, ox); |
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122 /* |
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123 * loop reading in the string, and put it in a temporary buffer |
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124 */ |
103
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125 for (sp = buf; (c=readchar(awin)) != '\n' && c != '\r' && c != ESCAPE; |
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126 wclrtoeol(awin), draw(awin)) { |
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127 if (sp - buf >= 50) { |
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128 *sp = '\0'; /* line was too long */ |
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129 strucpy(opt,buf,strlen(buf)); |
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130 mvwaddstr(awin, 0, 0, "Name was truncated --More--"); |
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131 wclrtoeol(awin); |
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132 draw(awin); |
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133 wait_for(awin, ' '); |
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134 mvwprintw(awin, 0, 0, "Called: %s",opt); |
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135 draw(awin); |
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136 return NORM; |
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137 } |
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138 if (c == -1) |
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139 continue; |
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140 else if(c == terminal.c_cc[VERASE]) { /* process erase char */ |
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141 if (sp > buf) { |
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142 reg int i; |
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143 |
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144 sp--; |
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145 for (i = strlen(unctrl(*sp)); i; i--) |
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146 waddch(awin, '\b'); |
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147 } |
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148 continue; |
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149 } |
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150 else if (c == terminal.c_cc[VKILL]) { /* process kill character */ |
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151 sp = buf; |
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152 wmove(awin, oy, ox); |
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153 continue; |
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154 } |
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155 else if (sp == buf) { |
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156 if (c == CTRLB) /* CTRL - B */ |
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157 break; |
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158 if (c == '~') { |
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159 strcpy(buf, home); |
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160 waddstr(awin, home); |
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161 sp += strlen(home); |
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162 continue; |
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163 } |
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164 } |
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165 *sp++ = c; |
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166 waddstr(awin, unctrl(c)); |
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167 } |
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168 *sp = '\0'; |
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169 if (sp > buf) /* only change option if something was typed */ |
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170 strucpy(opt, buf, strlen(buf)); |
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171 wmove(awin, oy, ox); |
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172 waddstr(awin, opt); |
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173 waddstr(awin, "\n\r"); |
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174 draw(awin); |
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175 if (awin == cw) |
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176 mpos += sp - buf; |
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177 if (c == CTRLB) |
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178 return MINUS; |
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179 if (c == ESCAPE) |
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180 return QUIT; |
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181 return NORM; |
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182 } |
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183 |
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184 /* |
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185 * parse_opts: |
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186 * Parse options from string, usually taken from the environment. |
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187 * the string is a series of comma seperated values, with strings |
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188 * being "name=....", with the string being defined up to a comma |
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189 * or the end of the entire option string. |
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190 */ |
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191 |
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192 parse_opts(str) |
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193 char *str; |
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194 { |
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195 reg char *sp; |
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196 reg OPTION *op; |
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197 reg int len; |
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198 |
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199 while (*str) { |
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200 for (sp = str; isalpha(*sp); sp++) /* get option name */ |
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201 continue; |
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202 len = sp - str; |
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203 for (op = optlist; op < &optlist[NUM_OPTS]; op++) { |
37 | 204 /* For security, some options can't be changed. */ |
205 if (!allowchange(op)) | |
206 continue; | |
36
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207 if (EQSTR(str, op->o_name, len)) { |
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208 reg char *start; |
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209 |
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210 for (str = sp + 1; *str == '='; str++) |
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211 continue; |
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212 if (*str == '~') { |
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213 strcpy(op->o_opt, home); |
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214 start = op->o_opt + strlen(home); |
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215 while (*++str == '/') |
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216 continue; |
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217 } |
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218 else |
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219 start = (char *) op->o_opt; |
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220 for (sp = str + 1; *sp && *sp != ','; sp++) |
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221 continue; |
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222 strucpy(start, str, sp - str); |
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223 } |
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224 } |
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225 /* |
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226 * skip to start of next option name |
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227 */ |
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228 while (*sp && !isalpha(*sp)) |
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229 sp++; |
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230 str = sp; |
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231 } |
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232 } |
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233 |
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234 /* |
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235 * copy string using unctrl for things |
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236 */ |
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237 strucpy(s1, s2, len) |
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238 char *s1, *s2; |
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239 int len; |
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240 { |
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241 reg char *sp; |
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242 |
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243 while (len-- > 0) { |
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244 strcpy(s1, (sp = unctrl(*s2))); |
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245 s1 += strlen(sp); |
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246 s2++; |
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247 } |
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248 *s1 = '\0'; |
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249 } |
37 | 250 |
251 int allowchange(OPTION *opt) | |
252 { | |
253 if (!use_savedir) | |
254 return 1; | |
255 if (!strcmp(opt->o_name, "name")) | |
256 return 0; | |
257 if (!strcmp(opt->o_name, "file")) | |
258 return 0; | |
259 return 1; | |
260 } |