annotate src/SDL_error.c @ 2842:97ba0be8b565

Date: Sat, 06 Dec 2008 15:27:00 +0100 From: Couriersud Subject: SDL: Relative mouse movements The patch below will reenable processing of relative mouse movements. The DirectFB drivers generates those in "grabbed" mode. These ensure, that even in fullscreen mode relative movements are reported. SDLMAME depends on this for games with trackballs. Looking at the code I ask myself whether relative movements should be handled in the drivers (x11, directfb). Both x11 and directfb are able to report relative movements. This would leave it to the driver to use the most appropriate method for relative movements when at the border of a fullscreen window or being "grabbed".
author Sam Lantinga <slouken@libsdl.org>
date Sat, 06 Dec 2008 17:50:50 +0000
parents 204be4fc2726
children 99210400e8b9
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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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
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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.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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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
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Simple error handling in SDL */
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25
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26 #include "SDL_error.h"
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27 #include "SDL_error_c.h"
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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 */
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33 static SDL_error SDL_global_error;
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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 */
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38
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39 #define SDL_ERRBUFIZE 1024
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40
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41 /* Private functions */
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42
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43 static const char *
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44 SDL_LookupString(const char *key)
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45 {
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46 /* FIXME: Add code to lookup key in language string hash-table */
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47 return key;
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48 }
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49
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50 /* Public functions */
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51
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52 void
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53 SDL_SetError(const char *fmt, ...)
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54 {
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55 va_list ap;
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56 SDL_error *error;
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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));
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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);
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109
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110 /* If we are in debug mode, print out an error message */
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111 #ifdef DEBUG_ERROR
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112 fprintf(stderr, "SDL_SetError: %s\n", SDL_GetError());
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113 #endif
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114 }
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115
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116 /* This function has a bit more overhead than most error functions
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117 so that it supports internationalization and thread-safe errors.
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118 */
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119 char *
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120 SDL_GetErrorMsg(char *errstr, unsigned int maxlen)
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121 {
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122 SDL_error *error;
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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
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diff changeset
135
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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136 fmt = SDL_LookupString(error->key);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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137 argi = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
138 while (*fmt && (maxlen > 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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139 if (*fmt == '%') {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
140 char tmp[32], *spot = tmp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
141 *spot++ = *fmt++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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142 while ((*fmt == '.' || (*fmt >= '0' && *fmt <= '9'))
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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143 && spot < (tmp + SDL_arraysize(tmp) - 2)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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144 *spot++ = *fmt++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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145 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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146 *spot++ = *fmt++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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147 *spot++ = '\0';
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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148 switch (spot[-2]) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
149 case '%':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
150 *msg++ = '%';
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
151 maxlen -= 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
152 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
153 case 'c':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
154 case 'i':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
155 case 'd':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
156 case 'u':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
157 case 'o':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
158 case 'x':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
159 case 'X':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
160 len =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
161 SDL_snprintf(msg, maxlen, tmp,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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162 error->args[argi++].value_i);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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163 msg += len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
164 maxlen -= len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
165 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
166 case 'f':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
167 len =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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168 SDL_snprintf(msg, maxlen, tmp,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
169 error->args[argi++].value_f);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
170 msg += len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
171 maxlen -= len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
172 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
173 case 'p':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
174 len =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
175 SDL_snprintf(msg, maxlen, tmp,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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176 error->args[argi++].value_ptr);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
177 msg += len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
178 maxlen -= len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
179 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
180 case 's':
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
181 len =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
182 SDL_snprintf(msg, maxlen, tmp,
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
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diff changeset
183 SDL_LookupString(error->args[argi++].
204be4fc2726 Final merge of Google Summer of Code 2008 work...
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diff changeset
184 buf));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
185 msg += len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
186 maxlen -= len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
187 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
188 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
189 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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190 *msg++ = *fmt++;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
191 maxlen -= 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
192 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
193 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
194 *msg = 0; /* NULL terminate the string */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
195 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
196 return (errstr);
0
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diff changeset
197 }
74212992fb08 Initial revision
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diff changeset
198
74212992fb08 Initial revision
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199 /* Available for backwards compatibility */
1895
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diff changeset
200 char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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201 SDL_GetError(void)
0
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diff changeset
202 {
1895
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diff changeset
203 static char errmsg[SDL_ERRBUFIZE];
0
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diff changeset
204
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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205 return ((char *) SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE));
0
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diff changeset
206 }
74212992fb08 Initial revision
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diff changeset
207
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
208 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
209 SDL_ClearError(void)
0
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diff changeset
210 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
211 SDL_error *error;
0
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diff changeset
212
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
213 error = SDL_GetErrBuf();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
214 error->error = 0;
0
74212992fb08 Initial revision
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parents:
diff changeset
215 }
74212992fb08 Initial revision
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parents:
diff changeset
216
74212992fb08 Initial revision
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diff changeset
217 /* Very common errors go here */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
218 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
219 SDL_Error(SDL_errorcode code)
0
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diff changeset
220 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
221 switch (code) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
222 case SDL_ENOMEM:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
223 SDL_SetError("Out of memory");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
224 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
225 case SDL_EFREAD:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
226 SDL_SetError("Error reading from datastream");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
227 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
228 case SDL_EFWRITE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
229 SDL_SetError("Error writing to datastream");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
230 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
231 case SDL_EFSEEK:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
232 SDL_SetError("Error seeking in datastream");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
233 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
234 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
235 SDL_SetError("Unknown SDL error");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
236 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
237 }
0
74212992fb08 Initial revision
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parents:
diff changeset
238 }
74212992fb08 Initial revision
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parents:
diff changeset
239
74212992fb08 Initial revision
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parents:
diff changeset
240 #ifdef TEST_ERROR
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1847
diff changeset
241 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
242 main(int argc, char *argv[])
0
74212992fb08 Initial revision
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parents:
diff changeset
243 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
244 char buffer[BUFSIZ + 1];
0
74212992fb08 Initial revision
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parents:
diff changeset
245
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
246 SDL_SetError("Hi there!");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
247 printf("Error 1: %s\n", SDL_GetError());
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
248 SDL_ClearError();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
249 SDL_memset(buffer, '1', BUFSIZ);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
250 buffer[BUFSIZ] = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
251 SDL_SetError("This is the error: %s (%f)", buffer, 1.0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
252 printf("Error 2: %s\n", SDL_GetError());
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
253 exit(0);
0
74212992fb08 Initial revision
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parents:
diff changeset
254 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
255 #endif
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1847
diff changeset
256 /* vi: set ts=4 sw=4 expandtab: */