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1 | 49 | Janez1 | /*
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2 | * "$Id: mxml-private.c 315 2007-11-22 18:01:52Z mike $"
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3 | *
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4 | * Private functions for Mini-XML, a small XML-like file parsing library.
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5 | *
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6 | * Copyright 2003-2007 by Michael Sweet.
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7 | *
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8 | * This program is free software; you can redistribute it and/or
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9 | * modify it under the terms of the GNU Library General Public
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10 | * License as published by the Free Software Foundation; either
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11 | * version 2, or (at your option) any later version.
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12 | *
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13 | * This program is distributed in the hope that it will be useful,
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 | * GNU General Public License for more details.
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17 | *
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18 | * Contents:
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19 | *
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20 | * mxml_error() - Display an error message.
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21 | * mxml_integer_cb() - Default callback for integer values.
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22 | * mxml_opaque_cb() - Default callback for opaque values.
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23 | * mxml_real_cb() - Default callback for real number values.
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24 | * _mxml_global() - Get global data.
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25 | */
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26 | |||
27 | /*
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28 | * Include necessary headers...
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29 | */
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30 | |||
31 | #include "mxml-private.h" |
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32 | |||
33 | |||
34 | /*
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35 | * 'mxml_error()' - Display an error message.
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36 | */
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37 | |||
38 | void
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39 | mxml_error(const char *format, /* I - Printf-style format string */ |
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40 | ...) /* I - Additional arguments as needed */
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41 | { |
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42 | va_list ap; /* Pointer to arguments */
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43 | char s[1024]; /* Message string */ |
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44 | _mxml_global_t *global = _mxml_global(); |
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45 | /* Global data */
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46 | |||
47 | |||
48 | /*
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49 | * Range check input...
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50 | */
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51 | |||
52 | if (!format)
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53 | return;
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54 | |||
55 | /*
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56 | * Format the error message string...
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57 | */
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58 | |||
59 | va_start(ap, format); |
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60 | |||
61 | vsnprintf(s, sizeof(s), format, ap);
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62 | |||
63 | va_end(ap); |
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64 | |||
65 | /*
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66 | * And then display the error message...
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67 | */
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68 | |||
69 | if (global->error_cb)
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70 | (*global->error_cb)(s); |
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71 | else
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72 | fprintf(stderr, "mxml: %s\n", s);
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73 | } |
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74 | |||
75 | |||
76 | /*
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77 | * 'mxml_ignore_cb()' - Default callback for ignored values.
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78 | */
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79 | |||
80 | mxml_type_t /* O - Node type */
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81 | mxml_ignore_cb(mxml_node_t *node) /* I - Current node */
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82 | { |
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83 | (void)node;
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84 | |||
85 | return (MXML_IGNORE);
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86 | } |
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87 | |||
88 | |||
89 | /*
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90 | * 'mxml_integer_cb()' - Default callback for integer values.
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91 | */
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92 | |||
93 | mxml_type_t /* O - Node type */
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94 | mxml_integer_cb(mxml_node_t *node) /* I - Current node */
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95 | { |
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96 | (void)node;
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97 | |||
98 | return (MXML_INTEGER);
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99 | } |
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100 | |||
101 | |||
102 | /*
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103 | * 'mxml_opaque_cb()' - Default callback for opaque values.
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104 | */
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105 | |||
106 | mxml_type_t /* O - Node type */
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107 | mxml_opaque_cb(mxml_node_t *node) /* I - Current node */
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108 | { |
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109 | (void)node;
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110 | |||
111 | return (MXML_OPAQUE);
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112 | } |
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113 | |||
114 | |||
115 | /*
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116 | * 'mxml_real_cb()' - Default callback for real number values.
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117 | */
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118 | |||
119 | mxml_type_t /* O - Node type */
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120 | mxml_real_cb(mxml_node_t *node) /* I - Current node */
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121 | { |
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122 | (void)node;
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123 | |||
124 | return (MXML_REAL);
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125 | } |
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126 | |||
127 | |||
128 | #ifdef HAVE_PTHREAD_H /**** POSIX threading ****/ |
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129 | # include <pthread.h> |
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130 | |||
131 | static pthread_key_t _mxml_key = -1; /* Thread local storage key */ |
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132 | static pthread_once_t _mxml_key_once = PTHREAD_ONCE_INIT;
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133 | /* One-time initialization object */
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134 | static void _mxml_init(void); |
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135 | static void _mxml_destructor(void *g); |
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136 | |||
137 | |||
138 | /*
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139 | * '_mxml_global()' - Get global data.
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140 | */
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141 | |||
142 | _mxml_global_t * /* O - Global data */
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143 | _mxml_global(void)
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144 | { |
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145 | _mxml_global_t *global; /* Global data */
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146 | |||
147 | |||
148 | pthread_once(&_mxml_key_once, _mxml_init); |
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149 | |||
150 | if ((global = (_mxml_global_t *)pthread_getspecific(_mxml_key)) == NULL) |
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151 | { |
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152 | global = (_mxml_global_t *)calloc(1, sizeof(_mxml_global_t)); |
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153 | pthread_setspecific(_mxml_key, global); |
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154 | |||
155 | global->num_entity_cbs = 1;
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156 | global->entity_cbs[0] = _mxml_entity_cb;
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157 | global->wrap = 72;
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158 | } |
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159 | |||
160 | return (global);
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161 | } |
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162 | |||
163 | |||
164 | /*
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165 | * '_mxml_init()' - Initialize global data...
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166 | */
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167 | |||
168 | static void |
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169 | _mxml_init(void)
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170 | { |
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171 | pthread_key_create(&_mxml_key, _mxml_destructor); |
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172 | } |
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173 | |||
174 | |||
175 | /*
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176 | * '_mxml_destructor()' - Free memory used for globals...
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177 | */
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178 | |||
179 | static void |
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180 | _mxml_destructor(void *g) /* I - Global data */ |
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181 | { |
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182 | free(g); |
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183 | } |
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184 | |||
185 | |||
186 | #elif defined(WIN32) /**** WIN32 threading ****/ |
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187 | # include <windows.h> |
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188 | |||
189 | static DWORD _mxml_tls_index; /* Index for global storage */ |
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190 | |||
191 | |||
192 | /*
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193 | * 'DllMain()' - Main entry for library.
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194 | */
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195 | |||
196 | BOOL WINAPI /* O - Success/failure */
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197 | DllMain(HINSTANCE hinst, /* I - DLL module handle */
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198 | DWORD reason, /* I - Reason */
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199 | LPVOID reserved) /* I - Unused */
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200 | { |
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201 | _mxml_global_t *global; /* Global data */
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202 | |||
203 | |||
204 | (void)hinst;
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205 | (void)reserved;
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206 | |||
207 | switch (reason)
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208 | { |
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209 | case DLL_PROCESS_ATTACH : /* Called on library initialization */ |
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210 | if ((_mxml_tls_index = TlsAlloc()) == TLS_OUT_OF_INDEXES)
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211 | return (FALSE);
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212 | break;
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213 | |||
214 | case DLL_THREAD_DETACH : /* Called when a thread terminates */ |
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215 | if ((global = (_mxml_global_t *)TlsGetValue(_mxml_tls_index)) != NULL) |
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216 | free(global); |
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217 | break;
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218 | |||
219 | case DLL_PROCESS_DETACH : /* Called when library is unloaded */ |
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220 | if ((global = (_mxml_global_t *)TlsGetValue(_mxml_tls_index)) != NULL) |
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221 | free(global); |
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222 | |||
223 | TlsFree(_mxml_tls_index); |
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224 | break;
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225 | |||
226 | default:
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227 | break;
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228 | } |
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229 | |||
230 | return (TRUE);
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231 | } |
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232 | |||
233 | |||
234 | /*
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235 | * '_mxml_global()' - Get global data.
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236 | */
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237 | |||
238 | _mxml_global_t * /* O - Global data */
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239 | _mxml_global(void)
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240 | { |
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241 | _mxml_global_t *global; /* Global data */
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242 | |||
243 | |||
244 | if ((global = (_mxml_global_t *)TlsGetValue(_mxml_tls_index)) == NULL) |
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245 | { |
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246 | global = (_mxml_global_t *)calloc(1, sizeof(_mxml_global_t)); |
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247 | |||
248 | global->num_entity_cbs = 1;
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249 | global->entity_cbs[0] = _mxml_entity_cb;
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250 | global->wrap = 72;
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251 | |||
252 | TlsSetValue(_mxml_tls_index, (LPVOID)global); |
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253 | } |
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254 | |||
255 | return (global);
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256 | } |
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257 | |||
258 | |||
259 | #else /**** No threading ****/ |
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260 | /*
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261 | * '_mxml_global()' - Get global data.
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262 | */
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263 | |||
264 | _mxml_global_t * /* O - Global data */
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265 | _mxml_global(void)
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266 | { |
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267 | static _mxml_global_t global = /* Global data */ |
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268 | { |
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269 | NULL, /* error_cb */ |
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270 | 1, /* num_entity_cbs */ |
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271 | { _mxml_entity_cb }, /* entity_cbs */
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272 | 72, /* wrap */ |
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273 | NULL, /* custom_load_cb */ |
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274 | NULL /* custom_save_cb */ |
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275 | }; |
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276 | |||
277 | |||
278 | return (&global);
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279 | } |
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280 | #endif /* HAVE_PTHREAD_H */ |
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281 | |||
282 | |||
283 | /*
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284 | * End of "$Id: mxml-private.c 315 2007-11-22 18:01:52Z mike $".
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285 | */ |