Mercurial > sdl-ios-xcode
annotate src/SDL_error.c @ 2759:95fccd9bf262
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author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 15 Sep 2008 06:49:23 +0000 |
parents | 204be4fc2726 |
children | 99210400e8b9 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* Simple error handling in SDL */ | |
25 | |
26 #include "SDL_error.h" | |
27 #include "SDL_error_c.h" | |
28 | |
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29 /* Routine to get the thread-specific error variable */ |
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30 #if SDL_THREADS_DISABLED |
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31 /* !!! FIXME: what does this comment mean? Victim of Search and Replace? */ |
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32 /* The SDL_arraysize(The ),default (non-thread-safe) global error variable */ |
0 | 33 static SDL_error SDL_global_error; |
34 #define SDL_GetErrBuf() (&SDL_global_error) | |
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35 #else |
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36 extern SDL_error *SDL_GetErrBuf(void); |
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37 #endif /* SDL_THREADS_DISABLED */ |
0 | 38 |
39 #define SDL_ERRBUFIZE 1024 | |
40 | |
41 /* Private functions */ | |
42 | |
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43 static const char * |
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44 SDL_LookupString(const char *key) |
0 | 45 { |
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46 /* FIXME: Add code to lookup key in language string hash-table */ |
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47 return key; |
0 | 48 } |
49 | |
50 /* Public functions */ | |
51 | |
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52 void |
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53 SDL_SetError(const char *fmt, ...) |
0 | 54 { |
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55 va_list ap; |
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56 SDL_error *error; |
0 | 57 |
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58 /* Copy in the key, mark error as valid */ |
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59 error = SDL_GetErrBuf(); |
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60 error->error = 1; |
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61 SDL_strlcpy((char *) error->key, fmt, sizeof(error->key)); |
0 | 62 |
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63 va_start(ap, fmt); |
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64 error->argc = 0; |
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65 while (*fmt) { |
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66 if (*fmt++ == '%') { |
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67 while (*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) { |
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68 ++fmt; |
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69 } |
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70 switch (*fmt++) { |
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71 case 0: /* Malformed format string.. */ |
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72 --fmt; |
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73 break; |
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74 case 'c': |
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75 case 'i': |
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76 case 'd': |
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77 case 'u': |
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78 case 'o': |
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79 case 'x': |
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80 case 'X': |
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81 error->args[error->argc++].value_i = va_arg(ap, int); |
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82 break; |
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83 case 'f': |
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84 error->args[error->argc++].value_f = va_arg(ap, double); |
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85 break; |
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86 case 'p': |
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87 error->args[error->argc++].value_ptr = va_arg(ap, void *); |
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88 break; |
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89 case 's': |
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90 { |
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91 int i = error->argc; |
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92 const char *str = va_arg(ap, const char *); |
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93 if (str == NULL) |
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94 str = "(null)"; |
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95 SDL_strlcpy((char *) error->args[i].buf, str, |
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96 ERR_MAX_STRLEN); |
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97 error->argc++; |
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98 } |
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99 break; |
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100 default: |
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101 break; |
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102 } |
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103 if (error->argc >= ERR_MAX_ARGS) { |
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104 break; |
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105 } |
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106 } |
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107 } |
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108 va_end(ap); |
0 | 109 |
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110 /* If we are in debug mode, print out an error message */ |
0 | 111 #ifdef DEBUG_ERROR |
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112 fprintf(stderr, "SDL_SetError: %s\n", SDL_GetError()); |
0 | 113 #endif |
114 } | |
115 | |
116 /* This function has a bit more overhead than most error functions | |
117 so that it supports internationalization and thread-safe errors. | |
118 */ | |
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119 char * |
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120 SDL_GetErrorMsg(char *errstr, unsigned int maxlen) |
0 | 121 { |
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122 SDL_error *error; |
0 | 123 |
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124 /* Clear the error string */ |
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125 *errstr = '\0'; |
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126 --maxlen; |
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127 |
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128 /* Get the thread-safe error, and print it out */ |
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129 error = SDL_GetErrBuf(); |
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130 if (error->error) { |
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131 const char *fmt; |
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132 char *msg = errstr; |
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133 int len; |
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134 int argi; |
0 | 135 |
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136 fmt = SDL_LookupString(error->key); |
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137 argi = 0; |
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138 while (*fmt && (maxlen > 0)) { |
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139 if (*fmt == '%') { |
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140 char tmp[32], *spot = tmp; |
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141 *spot++ = *fmt++; |
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142 while ((*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) |
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143 && spot < (tmp + SDL_arraysize(tmp) - 2)) { |
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144 *spot++ = *fmt++; |
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145 } |
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146 *spot++ = *fmt++; |
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147 *spot++ = '\0'; |
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148 switch (spot[-2]) { |
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149 case '%': |
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150 *msg++ = '%'; |
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151 maxlen -= 1; |
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152 break; |
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153 case 'c': |
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154 case 'i': |
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155 case 'd': |
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156 case 'u': |
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157 case 'o': |
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158 case 'x': |
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159 case 'X': |
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160 len = |
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161 SDL_snprintf(msg, maxlen, tmp, |
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162 error->args[argi++].value_i); |
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163 msg += len; |
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164 maxlen -= len; |
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165 break; |
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166 case 'f': |
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167 len = |
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168 SDL_snprintf(msg, maxlen, tmp, |
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169 error->args[argi++].value_f); |
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170 msg += len; |
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171 maxlen -= len; |
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172 break; |
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173 case 'p': |
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174 len = |
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175 SDL_snprintf(msg, maxlen, tmp, |
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176 error->args[argi++].value_ptr); |
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177 msg += len; |
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178 maxlen -= len; |
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179 break; |
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180 case 's': |
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181 len = |
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182 SDL_snprintf(msg, maxlen, tmp, |
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183 SDL_LookupString(error->args[argi++]. |
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184 buf)); |
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185 msg += len; |
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186 maxlen -= len; |
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187 break; |
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188 } |
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189 } else { |
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190 *msg++ = *fmt++; |
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191 maxlen -= 1; |
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192 } |
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193 } |
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194 *msg = 0; /* NULL terminate the string */ |
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195 } |
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196 return (errstr); |
0 | 197 } |
198 | |
199 /* Available for backwards compatibility */ | |
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200 char * |
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201 SDL_GetError(void) |
0 | 202 { |
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203 static char errmsg[SDL_ERRBUFIZE]; |
0 | 204 |
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205 return ((char *) SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE)); |
0 | 206 } |
207 | |
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208 void |
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209 SDL_ClearError(void) |
0 | 210 { |
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211 SDL_error *error; |
0 | 212 |
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213 error = SDL_GetErrBuf(); |
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214 error->error = 0; |
0 | 215 } |
216 | |
217 /* Very common errors go here */ | |
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218 void |
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219 SDL_Error(SDL_errorcode code) |
0 | 220 { |
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221 switch (code) { |
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222 case SDL_ENOMEM: |
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223 SDL_SetError("Out of memory"); |
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224 break; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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225 case SDL_EFREAD: |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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226 SDL_SetError("Error reading from datastream"); |
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227 break; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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228 case SDL_EFWRITE: |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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229 SDL_SetError("Error writing to datastream"); |
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230 break; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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231 case SDL_EFSEEK: |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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232 SDL_SetError("Error seeking in datastream"); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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233 break; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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234 default: |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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235 SDL_SetError("Unknown SDL error"); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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236 break; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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237 } |
0 | 238 } |
239 | |
240 #ifdef TEST_ERROR | |
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241 int |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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242 main(int argc, char *argv[]) |
0 | 243 { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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244 char buffer[BUFSIZ + 1]; |
0 | 245 |
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246 SDL_SetError("Hi there!"); |
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247 printf("Error 1: %s\n", SDL_GetError()); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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248 SDL_ClearError(); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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249 SDL_memset(buffer, '1', BUFSIZ); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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250 buffer[BUFSIZ] = 0; |
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251 SDL_SetError("This is the error: %s (%f)", buffer, 1.0); |
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252 printf("Error 2: %s\n", SDL_GetError()); |
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253 exit(0); |
0 | 254 } |
255 #endif | |
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256 /* vi: set ts=4 sw=4 expandtab: */ |