Mercurial > sdl-ios-xcode
annotate src/SDL_error.c @ 4573:6399178be313
Completed work on X11_CreateTexture. Added lots of safety features.
These include support for drawing a texture using the core protocol
while other textures are drawn using Xrender if Xrender does not support
the color format of the said texture or any other fault with Xrender.
author | Sunny Sachanandani <sunnysachanandani@gmail.com> |
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date | Fri, 28 May 2010 20:40:09 +0530 |
parents | f7b03b6838cb |
children | 791b3256fb22 95be206b3cb7 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
3697 | 3 Copyright (C) 1997-2010 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, |
3013
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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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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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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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233 break; |
3317 | 234 case SDL_UNSUPPORTED: |
235 SDL_SetError("That operation is not supported"); | |
236 break; | |
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237 default: |
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238 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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239 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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240 } |
0 | 241 } |
242 | |
243 #ifdef TEST_ERROR | |
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244 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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245 main(int argc, char *argv[]) |
0 | 246 { |
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247 char buffer[BUFSIZ + 1]; |
0 | 248 |
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249 SDL_SetError("Hi there!"); |
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250 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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251 SDL_ClearError(); |
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252 SDL_memset(buffer, '1', BUFSIZ); |
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253 buffer[BUFSIZ] = 0; |
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254 SDL_SetError("This is the error: %s (%f)", buffer, 1.0); |
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255 printf("Error 2: %s\n", SDL_GetError()); |
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256 exit(0); |
0 | 257 } |
258 #endif | |
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259 /* vi: set ts=4 sw=4 expandtab: */ |