Mercurial > sdl-ios-xcode

comparison src/SDL_error.c @ 1895:c121d94672cb

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 10 Jul 2006 21:04:37 +0000
parents 845bcffc0dd8
children 5f6550e5184f
comparison
equal deleted inserted replaced
1894:c69cee13dd76 1895:c121d94672cb
37 37
38 #define SDL_ERRBUFIZE 1024 38 #define SDL_ERRBUFIZE 1024
39 39
40 /* Private functions */ 40 /* Private functions */
41 41
42 static const char *SDL_LookupString(const char *key) 42 static const char *
43 { 43 SDL_LookupString(const char *key)
44 /* FIXME: Add code to lookup key in language string hash-table */ 44 {
45 return key; 45 /* FIXME: Add code to lookup key in language string hash-table */
46 return key;
46 } 47 }
47 48
48 /* Public functions */ 49 /* Public functions */
49 50
50 void SDL_SetError (const char *fmt, ...) 51 void
51 { 52 SDL_SetError(const char *fmt, ...)
52 va_list ap; 53 {
53 SDL_error *error; 54 va_list ap;
54 55 SDL_error *error;
55 /* Copy in the key, mark error as valid */ 56
56 error = SDL_GetErrBuf(); 57 /* Copy in the key, mark error as valid */
57 error->error = 1; 58 error = SDL_GetErrBuf();
58 SDL_strlcpy((char *)error->key, fmt, sizeof(error->key)); 59 error->error = 1;
59 60 SDL_strlcpy((char *) error->key, fmt, sizeof(error->key));
60 va_start(ap, fmt); 61
61 error->argc = 0; 62 va_start(ap, fmt);
62 while ( *fmt ) { 63 error->argc = 0;
63 if ( *fmt++ == '%' ) { 64 while (*fmt) {
64 while ( *fmt == '.' || (*fmt >= '0' && *fmt <= '9') ) { 65 if (*fmt++ == '%') {
65 ++fmt; 66 while (*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) {
66 } 67 ++fmt;
67 switch (*fmt++) { 68 }
68 case 0: /* Malformed format string.. */ 69 switch (*fmt++) {
69 --fmt; 70 case 0: /* Malformed format string.. */
70 break; 71 --fmt;
71 case 'c': 72 break;
72 case 'i': 73 case 'c':
73 case 'd': 74 case 'i':
74 case 'u': 75 case 'd':
75 case 'o': 76 case 'u':
76 case 'x': 77 case 'o':
77 case 'X': 78 case 'x':
78 error->args[error->argc++].value_i = 79 case 'X':
79 va_arg(ap, int); 80 error->args[error->argc++].value_i = va_arg(ap, int);
80 break; 81 break;
81 case 'f': 82 case 'f':
82 error->args[error->argc++].value_f = 83 error->args[error->argc++].value_f = va_arg(ap, double);
83 va_arg(ap, double); 84 break;
84 break; 85 case 'p':
85 case 'p': 86 error->args[error->argc++].value_ptr = va_arg(ap, void *);
86 error->args[error->argc++].value_ptr = 87 break;
87 va_arg(ap, void *); 88 case 's':
88 break; 89 {
89 case 's': 90 int i = error->argc;
90 { 91 const char *str = va_arg(ap, const char *);
91 int i = error->argc; 92 if (str == NULL)
92 const char *str = va_arg(ap, const char *); 93 str = "(null)";
93 if (str == NULL) 94 SDL_strlcpy((char *) error->args[i].buf, str,
94 str = "(null)"; 95 ERR_MAX_STRLEN);
95 SDL_strlcpy((char *)error->args[i].buf, str, ERR_MAX_STRLEN); 96 error->argc++;
96 error->argc++; 97 }
97 } 98 break;
98 break; 99 default:
99 default: 100 break;
100 break; 101 }
101 } 102 if (error->argc >= ERR_MAX_ARGS) {
102 if ( error->argc >= ERR_MAX_ARGS ) { 103 break;
103 break; 104 }
104 } 105 }
105 } 106 }
106 } 107 va_end(ap);
107 va_end(ap); 108
108 109 /* If we are in debug mode, print out an error message */
109 /* If we are in debug mode, print out an error message */
110 #ifdef DEBUG_ERROR 110 #ifdef DEBUG_ERROR
111 fprintf(stderr, "SDL_SetError: %s\n", SDL_GetError()); 111 fprintf(stderr, "SDL_SetError: %s\n", SDL_GetError());
112 #endif 112 #endif
113 } 113 }
114 114
115 /* This function has a bit more overhead than most error functions 115 /* This function has a bit more overhead than most error functions
116 so that it supports internationalization and thread-safe errors. 116 so that it supports internationalization and thread-safe errors.
117 */ 117 */
118 char *SDL_GetErrorMsg(char *errstr, unsigned int maxlen) 118 char *
119 { 119 SDL_GetErrorMsg(char *errstr, unsigned int maxlen)
120 SDL_error *error; 120 {
121 121 SDL_error *error;
122 /* Clear the error string */ 122
123 *errstr = '\0'; --maxlen; 123 /* Clear the error string */
124 124 *errstr = '\0';
125 /* Get the thread-safe error, and print it out */ 125 --maxlen;
126 error = SDL_GetErrBuf(); 126
127 if ( error->error ) { 127 /* Get the thread-safe error, and print it out */
128 const char *fmt; 128 error = SDL_GetErrBuf();
129 char *msg = errstr; 129 if (error->error) {
130 int len; 130 const char *fmt;
131 int argi; 131 char *msg = errstr;
132 132 int len;
133 fmt = SDL_LookupString(error->key); 133 int argi;
134 argi = 0; 134
135 while ( *fmt && (maxlen > 0) ) { 135 fmt = SDL_LookupString(error->key);
136 if ( *fmt == '%' ) { 136 argi = 0;
137 char tmp[32], *spot = tmp; 137 while (*fmt && (maxlen > 0)) {
138 *spot++ = *fmt++; 138 if (*fmt == '%') {
139 while ( (*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) && spot < (tmp+SDL_arraysize(tmp)-2) ) { 139 char tmp[32], *spot = tmp;
140 *spot++ = *fmt++; 140 *spot++ = *fmt++;
141 } 141 while ((*fmt == '.' || (*fmt >= '0' && *fmt <= '9'))
142 *spot++ = *fmt++; 142 && spot < (tmp + SDL_arraysize(tmp) - 2)) {
143 *spot++ = '\0'; 143 *spot++ = *fmt++;
144 switch (spot[-2]) { 144 }
145 case '%': 145 *spot++ = *fmt++;
146 *msg++ = '%'; 146 *spot++ = '\0';
147 maxlen -= 1; 147 switch (spot[-2]) {
148 break; 148 case '%':
149 case 'c': 149 *msg++ = '%';
150 case 'i': 150 maxlen -= 1;
151 case 'd': 151 break;
152 case 'u': 152 case 'c':
153 case 'o': 153 case 'i':
154 case 'x': 154 case 'd':
155 case 'X': 155 case 'u':
156 len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_i); 156 case 'o':
157 msg += len; 157 case 'x':
158 maxlen -= len; 158 case 'X':
159 break; 159 len =
160 case 'f': 160 SDL_snprintf(msg, maxlen, tmp,
161 len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_f); 161 error->args[argi++].value_i);
162 msg += len; 162 msg += len;
163 maxlen -= len; 163 maxlen -= len;
164 break; 164 break;
165 case 'p': 165 case 'f':
166 len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_ptr); 166 len =
167 msg += len; 167 SDL_snprintf(msg, maxlen, tmp,
168 maxlen -= len; 168 error->args[argi++].value_f);
169 break; 169 msg += len;
170 case 's': 170 maxlen -= len;
171 len = SDL_snprintf(msg, maxlen, tmp, SDL_LookupString(error->args[argi++].buf)); 171 break;
172 msg += len; 172 case 'p':
173 maxlen -= len; 173 len =
174 break; 174 SDL_snprintf(msg, maxlen, tmp,
175 } 175 error->args[argi++].value_ptr);
176 } else { 176 msg += len;
177 *msg++ = *fmt++; 177 maxlen -= len;
178 maxlen -= 1; 178 break;
179 } 179 case 's':
180 } 180 len =
181 *msg = 0; /* NULL terminate the string */ 181 SDL_snprintf(msg, maxlen, tmp,
182 } 182 SDL_LookupString(error->
183 return(errstr); 183 args[argi++].buf));
184 msg += len;
185 maxlen -= len;
186 break;
187 }
188 } else {
189 *msg++ = *fmt++;
190 maxlen -= 1;
191 }
192 }
193 *msg = 0; /* NULL terminate the string */
194 }
195 return (errstr);
184 } 196 }
185 197
186 /* Available for backwards compatibility */ 198 /* Available for backwards compatibility */
187 char *SDL_GetError (void) 199 char *
188 { 200 SDL_GetError(void)
189 static char errmsg[SDL_ERRBUFIZE]; 201 {
190 202 static char errmsg[SDL_ERRBUFIZE];
191 return((char *)SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE)); 203
192 } 204 return ((char *) SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE));
193 205 }
194 void SDL_ClearError(void) 206
195 { 207 void
196 SDL_error *error; 208 SDL_ClearError(void)
197 209 {
198 error = SDL_GetErrBuf(); 210 SDL_error *error;
199 error->error = 0; 211
212 error = SDL_GetErrBuf();
213 error->error = 0;
200 } 214 }
201 215
202 /* Very common errors go here */ 216 /* Very common errors go here */
203 void SDL_Error(SDL_errorcode code) 217 void
204 { 218 SDL_Error(SDL_errorcode code)
205 switch (code) { 219 {
206 case SDL_ENOMEM: 220 switch (code) {
207 SDL_SetError("Out of memory"); 221 case SDL_ENOMEM:
208 break; 222 SDL_SetError("Out of memory");
209 case SDL_EFREAD: 223 break;
210 SDL_SetError("Error reading from datastream"); 224 case SDL_EFREAD:
211 break; 225 SDL_SetError("Error reading from datastream");
212 case SDL_EFWRITE: 226 break;
213 SDL_SetError("Error writing to datastream"); 227 case SDL_EFWRITE:
214 break; 228 SDL_SetError("Error writing to datastream");
215 case SDL_EFSEEK: 229 break;
216 SDL_SetError("Error seeking in datastream"); 230 case SDL_EFSEEK:
217 break; 231 SDL_SetError("Error seeking in datastream");
218 default: 232 break;
219 SDL_SetError("Unknown SDL error"); 233 default:
220 break; 234 SDL_SetError("Unknown SDL error");
221 } 235 break;
236 }
222 } 237 }
223 238
224 #ifdef TEST_ERROR 239 #ifdef TEST_ERROR
225 int main(int argc, char *argv[]) 240 int
226 { 241 main(int argc, char *argv[])
227 char buffer[BUFSIZ+1]; 242 {
228 243 char buffer[BUFSIZ + 1];
229 SDL_SetError("Hi there!"); 244
230 printf("Error 1: %s\n", SDL_GetError()); 245 SDL_SetError("Hi there!");
231 SDL_ClearError(); 246 printf("Error 1: %s\n", SDL_GetError());
232 SDL_memset(buffer, '1', BUFSIZ); 247 SDL_ClearError();
233 buffer[BUFSIZ] = 0; 248 SDL_memset(buffer, '1', BUFSIZ);
234 SDL_SetError("This is the error: %s (%f)", buffer, 1.0); 249 buffer[BUFSIZ] = 0;
235 printf("Error 2: %s\n", SDL_GetError()); 250 SDL_SetError("This is the error: %s (%f)", buffer, 1.0);
236 exit(0); 251 printf("Error 2: %s\n", SDL_GetError());
252 exit(0);
237 } 253 }
238 #endif 254 #endif
255 /* vi: set ts=4 sw=4 expandtab: */