The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 1 | |
| 2 | /* pngerror.c - stub functions for i/o and memory allocation |
| 3 | * |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 4 | * Last changed in libpng 1.2.41 [December 3, 2009] |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 5 | * Copyright (c) 1998-2009 Glenn Randers-Pehrson |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 6 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
| 7 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
| 8 | * |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 9 | * This code is released under the libpng license. |
| 10 | * For conditions of distribution and use, see the disclaimer |
| 11 | * and license in png.h |
| 12 | * |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 13 | * This file provides a location for all error handling. Users who |
| 14 | * need special error handling are expected to write replacement functions |
| 15 | * and use png_set_error_fn() to use those functions. See the instructions |
| 16 | * at each function. |
| 17 | */ |
| 18 | |
| 19 | #define PNG_INTERNAL |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 20 | #define PNG_NO_PEDANTIC_WARNINGS |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 21 | #include "png.h" |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 22 | #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 23 | |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 24 | static void /* PRIVATE */ |
| 25 | png_default_error PNGARG((png_structp png_ptr, |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 26 | png_const_charp error_message)) PNG_NORETURN; |
| 27 | #ifdef PNG_WARNINGS_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 28 | static void /* PRIVATE */ |
| 29 | png_default_warning PNGARG((png_structp png_ptr, |
| 30 | png_const_charp warning_message)); |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 31 | #endif /* PNG_WARNINGS_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 32 | |
| 33 | /* This function is called whenever there is a fatal error. This function |
| 34 | * should not be changed. If there is a need to handle errors differently, |
| 35 | * you should supply a replacement error function and use png_set_error_fn() |
| 36 | * to replace the error function at run-time. |
| 37 | */ |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 38 | #ifdef PNG_ERROR_TEXT_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 39 | void PNGAPI |
| 40 | png_error(png_structp png_ptr, png_const_charp error_message) |
| 41 | { |
| 42 | #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
| 43 | char msg[16]; |
| 44 | if (png_ptr != NULL) |
| 45 | { |
| 46 | if (png_ptr->flags& |
| 47 | (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) |
| 48 | { |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 49 | if (*error_message == PNG_LITERAL_SHARP) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 50 | { |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 51 | /* Strip "#nnnn " from beginning of error message. */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 52 | int offset; |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 53 | for (offset = 1; offset<15; offset++) |
| 54 | if (error_message[offset] == ' ') |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 55 | break; |
| 56 | if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT) |
| 57 | { |
| 58 | int i; |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 59 | for (i = 0; i < offset - 1; i++) |
| 60 | msg[i] = error_message[i + 1]; |
| 61 | msg[i - 1] = '\0'; |
| 62 | error_message = msg; |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 63 | } |
| 64 | else |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 65 | error_message += offset; |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 66 | } |
| 67 | else |
| 68 | { |
| 69 | if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT) |
| 70 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 71 | msg[0] = '0'; |
| 72 | msg[1] = '\0'; |
| 73 | error_message = msg; |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 74 | } |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | #endif |
| 79 | if (png_ptr != NULL && png_ptr->error_fn != NULL) |
| 80 | (*(png_ptr->error_fn))(png_ptr, error_message); |
| 81 | |
| 82 | /* If the custom handler doesn't exist, or if it returns, |
| 83 | use the default handler, which will not return. */ |
| 84 | png_default_error(png_ptr, error_message); |
| 85 | } |
| 86 | #else |
| 87 | void PNGAPI |
| 88 | png_err(png_structp png_ptr) |
| 89 | { |
| 90 | if (png_ptr != NULL && png_ptr->error_fn != NULL) |
| 91 | (*(png_ptr->error_fn))(png_ptr, '\0'); |
| 92 | |
| 93 | /* If the custom handler doesn't exist, or if it returns, |
| 94 | use the default handler, which will not return. */ |
| 95 | png_default_error(png_ptr, '\0'); |
| 96 | } |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 97 | #endif /* PNG_ERROR_TEXT_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 98 | |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 99 | #ifdef PNG_WARNINGS_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 100 | /* This function is called whenever there is a non-fatal error. This function |
| 101 | * should not be changed. If there is a need to handle warnings differently, |
| 102 | * you should supply a replacement warning function and use |
| 103 | * png_set_error_fn() to replace the warning function at run-time. |
| 104 | */ |
| 105 | void PNGAPI |
| 106 | png_warning(png_structp png_ptr, png_const_charp warning_message) |
| 107 | { |
| 108 | int offset = 0; |
| 109 | if (png_ptr != NULL) |
| 110 | { |
| 111 | #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
| 112 | if (png_ptr->flags& |
| 113 | (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) |
| 114 | #endif |
| 115 | { |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 116 | if (*warning_message == PNG_LITERAL_SHARP) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 117 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 118 | for (offset = 1; offset < 15; offset++) |
| 119 | if (warning_message[offset] == ' ') |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 120 | break; |
| 121 | } |
| 122 | } |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 123 | } |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 124 | if (png_ptr != NULL && png_ptr->warning_fn != NULL) |
| 125 | (*(png_ptr->warning_fn))(png_ptr, warning_message + offset); |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 126 | else |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 127 | png_default_warning(png_ptr, warning_message + offset); |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 128 | } |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 129 | #endif /* PNG_WARNINGS_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 130 | |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 131 | #ifdef PNG_BENIGN_ERRORS_SUPPORTED |
| 132 | void PNGAPI |
| 133 | png_benign_error(png_structp png_ptr, png_const_charp error_message) |
| 134 | { |
| 135 | if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) |
| 136 | png_warning(png_ptr, error_message); |
| 137 | else |
| 138 | png_error(png_ptr, error_message); |
| 139 | } |
| 140 | #endif |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 141 | |
| 142 | /* These utilities are used internally to build an error message that relates |
| 143 | * to the current chunk. The chunk name comes from png_ptr->chunk_name, |
| 144 | * this is used to prefix the message. The message is limited in length |
| 145 | * to 63 bytes, the name characters are output as hex digits wrapped in [] |
| 146 | * if the character is invalid. |
| 147 | */ |
| 148 | #define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97)) |
| 149 | static PNG_CONST char png_digit[16] = { |
| 150 | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
| 151 | 'A', 'B', 'C', 'D', 'E', 'F' |
| 152 | }; |
| 153 | |
| 154 | #define PNG_MAX_ERROR_TEXT 64 |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 155 | #if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 156 | static void /* PRIVATE */ |
| 157 | png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp |
| 158 | error_message) |
| 159 | { |
| 160 | int iout = 0, iin = 0; |
| 161 | |
| 162 | while (iin < 4) |
| 163 | { |
| 164 | int c = png_ptr->chunk_name[iin++]; |
| 165 | if (isnonalpha(c)) |
| 166 | { |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 167 | buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET; |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 168 | buffer[iout++] = png_digit[(c & 0xf0) >> 4]; |
| 169 | buffer[iout++] = png_digit[c & 0x0f]; |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 170 | buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET; |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 171 | } |
| 172 | else |
| 173 | { |
| 174 | buffer[iout++] = (png_byte)c; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | if (error_message == NULL) |
| 179 | buffer[iout] = '\0'; |
| 180 | else |
| 181 | { |
| 182 | buffer[iout++] = ':'; |
| 183 | buffer[iout++] = ' '; |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 184 | png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT); |
| 185 | buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0'; |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 186 | } |
| 187 | } |
| 188 | |
| 189 | #ifdef PNG_READ_SUPPORTED |
| 190 | void PNGAPI |
| 191 | png_chunk_error(png_structp png_ptr, png_const_charp error_message) |
| 192 | { |
| 193 | char msg[18+PNG_MAX_ERROR_TEXT]; |
| 194 | if (png_ptr == NULL) |
| 195 | png_error(png_ptr, error_message); |
| 196 | else |
| 197 | { |
| 198 | png_format_buffer(png_ptr, msg, error_message); |
| 199 | png_error(png_ptr, msg); |
| 200 | } |
| 201 | } |
| 202 | #endif /* PNG_READ_SUPPORTED */ |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 203 | #endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 204 | |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 205 | #ifdef PNG_WARNINGS_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 206 | void PNGAPI |
| 207 | png_chunk_warning(png_structp png_ptr, png_const_charp warning_message) |
| 208 | { |
| 209 | char msg[18+PNG_MAX_ERROR_TEXT]; |
| 210 | if (png_ptr == NULL) |
| 211 | png_warning(png_ptr, warning_message); |
| 212 | else |
| 213 | { |
| 214 | png_format_buffer(png_ptr, msg, warning_message); |
| 215 | png_warning(png_ptr, msg); |
| 216 | } |
| 217 | } |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 218 | #endif /* PNG_WARNINGS_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 219 | |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 220 | #ifdef PNG_READ_SUPPORTED |
| 221 | #ifdef PNG_BENIGN_ERRORS_SUPPORTED |
| 222 | void PNGAPI |
| 223 | png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message) |
| 224 | { |
| 225 | if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) |
| 226 | png_chunk_warning(png_ptr, error_message); |
| 227 | else |
| 228 | png_chunk_error(png_ptr, error_message); |
| 229 | } |
| 230 | #endif |
| 231 | #endif /* PNG_READ_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 232 | |
| 233 | /* This is the default error handling function. Note that replacements for |
| 234 | * this function MUST NOT RETURN, or the program will likely crash. This |
| 235 | * function is used by default, or if the program supplies NULL for the |
| 236 | * error function pointer in png_set_error_fn(). |
| 237 | */ |
| 238 | static void /* PRIVATE */ |
| 239 | png_default_error(png_structp png_ptr, png_const_charp error_message) |
| 240 | { |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 241 | #ifdef PNG_CONSOLE_IO_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 242 | #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 243 | if (*error_message == PNG_LITERAL_SHARP) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 244 | { |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 245 | /* Strip "#nnnn " from beginning of error message. */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 246 | int offset; |
| 247 | char error_number[16]; |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 248 | for (offset = 0; offset<15; offset++) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 249 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 250 | error_number[offset] = error_message[offset + 1]; |
| 251 | if (error_message[offset] == ' ') |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 252 | break; |
| 253 | } |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 254 | if ((offset > 1) && (offset < 15)) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 255 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 256 | error_number[offset - 1] = '\0'; |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 257 | fprintf(stderr, "libpng error no. %s: %s", |
| 258 | error_number, error_message + offset + 1); |
| 259 | fprintf(stderr, PNG_STRING_NEWLINE); |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 260 | } |
| 261 | else |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 262 | { |
| 263 | fprintf(stderr, "libpng error: %s, offset=%d", |
| 264 | error_message, offset); |
| 265 | fprintf(stderr, PNG_STRING_NEWLINE); |
| 266 | } |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 267 | } |
| 268 | else |
| 269 | #endif |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 270 | { |
| 271 | fprintf(stderr, "libpng error: %s", error_message); |
| 272 | fprintf(stderr, PNG_STRING_NEWLINE); |
| 273 | } |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 274 | #endif |
| 275 | |
| 276 | #ifdef PNG_SETJMP_SUPPORTED |
| 277 | if (png_ptr) |
| 278 | { |
| 279 | # ifdef USE_FAR_KEYWORD |
| 280 | { |
| 281 | jmp_buf jmpbuf; |
| 282 | png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf)); |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 283 | longjmp(jmpbuf,1); |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 284 | } |
| 285 | # else |
| 286 | longjmp(png_ptr->jmpbuf, 1); |
| 287 | # endif |
| 288 | } |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 289 | #endif |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 290 | /* Here if not setjmp support or if png_ptr is null. */ |
| 291 | PNG_ABORT(); |
| 292 | #ifndef PNG_CONSOLE_IO_SUPPORTED |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 293 | error_message = error_message; /* Make compiler happy */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 294 | #endif |
| 295 | } |
| 296 | |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 297 | #ifdef PNG_WARNINGS_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 298 | /* This function is called when there is a warning, but the library thinks |
| 299 | * it can continue anyway. Replacement functions don't have to do anything |
| 300 | * here if you don't want them to. In the default configuration, png_ptr is |
| 301 | * not used, but it is passed in case it may be useful. |
| 302 | */ |
| 303 | static void /* PRIVATE */ |
| 304 | png_default_warning(png_structp png_ptr, png_const_charp warning_message) |
| 305 | { |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 306 | #ifdef PNG_CONSOLE_IO_SUPPORTED |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 307 | # ifdef PNG_ERROR_NUMBERS_SUPPORTED |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 308 | if (*warning_message == PNG_LITERAL_SHARP) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 309 | { |
| 310 | int offset; |
| 311 | char warning_number[16]; |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 312 | for (offset = 0; offset < 15; offset++) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 313 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 314 | warning_number[offset] = warning_message[offset + 1]; |
| 315 | if (warning_message[offset] == ' ') |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 316 | break; |
| 317 | } |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 318 | if ((offset > 1) && (offset < 15)) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 319 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 320 | warning_number[offset + 1] = '\0'; |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 321 | fprintf(stderr, "libpng warning no. %s: %s", |
| 322 | warning_number, warning_message + offset); |
| 323 | fprintf(stderr, PNG_STRING_NEWLINE); |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 324 | } |
| 325 | else |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 326 | { |
| 327 | fprintf(stderr, "libpng warning: %s", |
| 328 | warning_message); |
| 329 | fprintf(stderr, PNG_STRING_NEWLINE); |
| 330 | } |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 331 | } |
| 332 | else |
| 333 | # endif |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 334 | { |
| 335 | fprintf(stderr, "libpng warning: %s", warning_message); |
| 336 | fprintf(stderr, PNG_STRING_NEWLINE); |
| 337 | } |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 338 | #else |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 339 | warning_message = warning_message; /* Make compiler happy */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 340 | #endif |
Patrick Scott | a0bb96c | 2009-07-22 11:50:02 -0400 | [diff] [blame] | 341 | png_ptr = png_ptr; /* Make compiler happy */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 342 | } |
Patrick Scott | 5f6bd84 | 2010-06-28 16:55:16 -0400 | [diff] [blame^] | 343 | #endif /* PNG_WARNINGS_SUPPORTED */ |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 344 | |
| 345 | /* This function is called when the application wants to use another method |
| 346 | * of handling errors and warnings. Note that the error function MUST NOT |
| 347 | * return to the calling routine or serious problems will occur. The return |
| 348 | * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1) |
| 349 | */ |
| 350 | void PNGAPI |
| 351 | png_set_error_fn(png_structp png_ptr, png_voidp error_ptr, |
| 352 | png_error_ptr error_fn, png_error_ptr warning_fn) |
| 353 | { |
| 354 | if (png_ptr == NULL) |
| 355 | return; |
| 356 | png_ptr->error_ptr = error_ptr; |
| 357 | png_ptr->error_fn = error_fn; |
| 358 | png_ptr->warning_fn = warning_fn; |
| 359 | } |
| 360 | |
| 361 | |
| 362 | /* This function returns a pointer to the error_ptr associated with the user |
| 363 | * functions. The application should free any memory associated with this |
| 364 | * pointer before png_write_destroy and png_read_destroy are called. |
| 365 | */ |
| 366 | png_voidp PNGAPI |
| 367 | png_get_error_ptr(png_structp png_ptr) |
| 368 | { |
| 369 | if (png_ptr == NULL) |
| 370 | return NULL; |
| 371 | return ((png_voidp)png_ptr->error_ptr); |
| 372 | } |
| 373 | |
| 374 | |
| 375 | #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
| 376 | void PNGAPI |
| 377 | png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode) |
| 378 | { |
The Android Open Source Project | 4215dd1 | 2009-03-09 11:52:12 -0700 | [diff] [blame] | 379 | if (png_ptr != NULL) |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 380 | { |
| 381 | png_ptr->flags &= |
| 382 | ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode); |
| 383 | } |
| 384 | } |
| 385 | #endif |
| 386 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |