Mercurial > fife-parpg
annotate ext/libpng-1.2.29/pngerror.c @ 584:a2dde16ddc62
* Fixed the location segfault of the genericrenderer. fixes[ticket:446]
author | helios2000@33b003aa-7bff-0310-803a-e67f0ece8222 |
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date | Sun, 08 Aug 2010 11:49:09 +0000 |
parents | 4a0efb7baf70 |
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rev | line source |
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1 |
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2 /* pngerror.c - stub functions for i/o and memory allocation |
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3 * |
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4 * Last changed in libpng 1.2.22 [October 13, 2007] |
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5 * For conditions of distribution and use, see copyright notice in png.h |
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6 * Copyright (c) 1998-2007 Glenn Randers-Pehrson |
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7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
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8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
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9 * |
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10 * This file provides a location for all error handling. Users who |
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11 * need special error handling are expected to write replacement functions |
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12 * and use png_set_error_fn() to use those functions. See the instructions |
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13 * at each function. |
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14 */ |
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15 |
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16 #define PNG_INTERNAL |
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17 #include "png.h" |
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18 |
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19 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) |
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20 static void /* PRIVATE */ |
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21 png_default_error PNGARG((png_structp png_ptr, |
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22 png_const_charp error_message)); |
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23 #ifndef PNG_NO_WARNINGS |
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24 static void /* PRIVATE */ |
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25 png_default_warning PNGARG((png_structp png_ptr, |
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26 png_const_charp warning_message)); |
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27 #endif /* PNG_NO_WARNINGS */ |
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28 |
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29 /* This function is called whenever there is a fatal error. This function |
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30 * should not be changed. If there is a need to handle errors differently, |
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31 * you should supply a replacement error function and use png_set_error_fn() |
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32 * to replace the error function at run-time. |
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33 */ |
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34 #ifndef PNG_NO_ERROR_TEXT |
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35 void PNGAPI |
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36 png_error(png_structp png_ptr, png_const_charp error_message) |
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37 { |
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38 #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
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39 char msg[16]; |
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40 if (png_ptr != NULL) |
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41 { |
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42 if (png_ptr->flags& |
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43 (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) |
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44 { |
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45 if (*error_message == '#') |
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46 { |
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47 int offset; |
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48 for (offset=1; offset<15; offset++) |
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49 if (*(error_message+offset) == ' ') |
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50 break; |
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51 if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT) |
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52 { |
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53 int i; |
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54 for (i=0; i<offset-1; i++) |
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55 msg[i]=error_message[i+1]; |
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56 msg[i]='\0'; |
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57 error_message=msg; |
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58 } |
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59 else |
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60 error_message+=offset; |
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61 } |
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62 else |
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63 { |
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64 if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT) |
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65 { |
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66 msg[0]='0'; |
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67 msg[1]='\0'; |
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68 error_message=msg; |
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69 } |
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70 } |
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71 } |
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72 } |
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73 #endif |
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74 if (png_ptr != NULL && png_ptr->error_fn != NULL) |
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75 (*(png_ptr->error_fn))(png_ptr, error_message); |
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76 |
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77 /* If the custom handler doesn't exist, or if it returns, |
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78 use the default handler, which will not return. */ |
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79 png_default_error(png_ptr, error_message); |
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80 } |
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81 #else |
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82 void PNGAPI |
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83 png_err(png_structp png_ptr) |
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84 { |
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85 if (png_ptr != NULL && png_ptr->error_fn != NULL) |
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86 (*(png_ptr->error_fn))(png_ptr, '\0'); |
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87 |
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88 /* If the custom handler doesn't exist, or if it returns, |
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89 use the default handler, which will not return. */ |
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90 png_default_error(png_ptr, '\0'); |
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91 } |
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92 #endif /* PNG_NO_ERROR_TEXT */ |
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93 |
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94 #ifndef PNG_NO_WARNINGS |
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95 /* This function is called whenever there is a non-fatal error. This function |
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96 * should not be changed. If there is a need to handle warnings differently, |
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97 * you should supply a replacement warning function and use |
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
98 * png_set_error_fn() to replace the warning function at run-time. |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
99 */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
100 void PNGAPI |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
101 png_warning(png_structp png_ptr, png_const_charp warning_message) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
102 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
103 int offset = 0; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
104 if (png_ptr != NULL) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
105 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
106 #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
107 if (png_ptr->flags& |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
108 (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
109 #endif |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
110 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
111 if (*warning_message == '#') |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
112 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
113 for (offset=1; offset<15; offset++) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
114 if (*(warning_message+offset) == ' ') |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
115 break; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
116 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
117 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
118 if (png_ptr != NULL && png_ptr->warning_fn != NULL) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
119 (*(png_ptr->warning_fn))(png_ptr, warning_message+offset); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
120 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
121 else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
122 png_default_warning(png_ptr, warning_message+offset); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
123 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
124 #endif /* PNG_NO_WARNINGS */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
125 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
126 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
127 /* These utilities are used internally to build an error message that relates |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
128 * to the current chunk. The chunk name comes from png_ptr->chunk_name, |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
129 * this is used to prefix the message. The message is limited in length |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
130 * to 63 bytes, the name characters are output as hex digits wrapped in [] |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
131 * if the character is invalid. |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
132 */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
133 #define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97)) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
134 static PNG_CONST char png_digit[16] = { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
135 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
136 'A', 'B', 'C', 'D', 'E', 'F' |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
137 }; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
138 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
139 #define PNG_MAX_ERROR_TEXT 64 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
140 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
141 #if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
142 static void /* PRIVATE */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
143 png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
144 error_message) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
145 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
146 int iout = 0, iin = 0; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
147 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
148 while (iin < 4) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
149 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
150 int c = png_ptr->chunk_name[iin++]; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
151 if (isnonalpha(c)) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
152 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
153 buffer[iout++] = '['; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
154 buffer[iout++] = png_digit[(c & 0xf0) >> 4]; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
155 buffer[iout++] = png_digit[c & 0x0f]; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
156 buffer[iout++] = ']'; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
157 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
158 else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
159 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
160 buffer[iout++] = (png_byte)c; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
161 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
162 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
163 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
164 if (error_message == NULL) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
165 buffer[iout] = '\0'; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
166 else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
167 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
168 buffer[iout++] = ':'; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
169 buffer[iout++] = ' '; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
170 png_memcpy(buffer+iout, error_message, PNG_MAX_ERROR_TEXT); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
171 buffer[iout+PNG_MAX_ERROR_TEXT-1] = '\0'; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
172 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
173 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
174 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
175 #ifdef PNG_READ_SUPPORTED |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
176 void PNGAPI |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
177 png_chunk_error(png_structp png_ptr, png_const_charp error_message) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
178 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
179 char msg[18+PNG_MAX_ERROR_TEXT]; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
180 if (png_ptr == NULL) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
181 png_error(png_ptr, error_message); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
182 else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
183 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
184 png_format_buffer(png_ptr, msg, error_message); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
185 png_error(png_ptr, msg); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
186 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
187 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
188 #endif /* PNG_READ_SUPPORTED */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
189 #endif /* !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
190 |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
191 #ifndef PNG_NO_WARNINGS |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
192 void PNGAPI |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
193 png_chunk_warning(png_structp png_ptr, png_const_charp warning_message) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
194 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
195 char msg[18+PNG_MAX_ERROR_TEXT]; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
196 if (png_ptr == NULL) |
4a0efb7baf70
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197 png_warning(png_ptr, warning_message); |
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198 else |
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199 { |
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200 png_format_buffer(png_ptr, msg, warning_message); |
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201 png_warning(png_ptr, msg); |
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202 } |
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203 } |
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204 #endif /* PNG_NO_WARNINGS */ |
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205 |
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206 |
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207 /* This is the default error handling function. Note that replacements for |
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* Datasets becomes the new trunk and retires after that :-)
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208 * this function MUST NOT RETURN, or the program will likely crash. This |
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209 * function is used by default, or if the program supplies NULL for the |
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* Datasets becomes the new trunk and retires after that :-)
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210 * error function pointer in png_set_error_fn(). |
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* Datasets becomes the new trunk and retires after that :-)
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parents:
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211 */ |
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|
212 static void /* PRIVATE */ |
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* Datasets becomes the new trunk and retires after that :-)
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213 png_default_error(png_structp png_ptr, png_const_charp error_message) |
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214 { |
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|
215 #ifndef PNG_NO_CONSOLE_IO |
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|
216 #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
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217 if (*error_message == '#') |
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218 { |
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219 int offset; |
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* Datasets becomes the new trunk and retires after that :-)
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220 char error_number[16]; |
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* Datasets becomes the new trunk and retires after that :-)
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221 for (offset=0; offset<15; offset++) |
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* Datasets becomes the new trunk and retires after that :-)
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222 { |
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223 error_number[offset] = *(error_message+offset+1); |
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* Datasets becomes the new trunk and retires after that :-)
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|
224 if (*(error_message+offset) == ' ') |
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* Datasets becomes the new trunk and retires after that :-)
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225 break; |
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* Datasets becomes the new trunk and retires after that :-)
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226 } |
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|
227 if((offset > 1) && (offset < 15)) |
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* Datasets becomes the new trunk and retires after that :-)
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228 { |
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|
229 error_number[offset-1]='\0'; |
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* Datasets becomes the new trunk and retires after that :-)
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230 fprintf(stderr, "libpng error no. %s: %s\n", error_number, |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
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parents:
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|
231 error_message+offset); |
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* Datasets becomes the new trunk and retires after that :-)
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232 } |
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* Datasets becomes the new trunk and retires after that :-)
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233 else |
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* Datasets becomes the new trunk and retires after that :-)
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|
234 fprintf(stderr, "libpng error: %s, offset=%d\n", error_message,offset); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
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235 } |
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* Datasets becomes the new trunk and retires after that :-)
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236 else |
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* Datasets becomes the new trunk and retires after that :-)
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|
237 #endif |
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* Datasets becomes the new trunk and retires after that :-)
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|
238 fprintf(stderr, "libpng error: %s\n", error_message); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
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parents:
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|
239 #endif |
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* Datasets becomes the new trunk and retires after that :-)
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240 |
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* Datasets becomes the new trunk and retires after that :-)
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|
241 #ifdef PNG_SETJMP_SUPPORTED |
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* Datasets becomes the new trunk and retires after that :-)
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|
242 if (png_ptr) |
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* Datasets becomes the new trunk and retires after that :-)
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243 { |
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* Datasets becomes the new trunk and retires after that :-)
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|
244 # ifdef USE_FAR_KEYWORD |
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* Datasets becomes the new trunk and retires after that :-)
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245 { |
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* Datasets becomes the new trunk and retires after that :-)
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|
246 jmp_buf jmpbuf; |
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* Datasets becomes the new trunk and retires after that :-)
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|
247 png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf)); |
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* Datasets becomes the new trunk and retires after that :-)
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|
248 longjmp(jmpbuf, 1); |
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* Datasets becomes the new trunk and retires after that :-)
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249 } |
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* Datasets becomes the new trunk and retires after that :-)
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|
250 # else |
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* Datasets becomes the new trunk and retires after that :-)
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|
251 longjmp(png_ptr->jmpbuf, 1); |
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* Datasets becomes the new trunk and retires after that :-)
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|
252 # endif |
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* Datasets becomes the new trunk and retires after that :-)
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253 } |
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* Datasets becomes the new trunk and retires after that :-)
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|
254 #else |
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* Datasets becomes the new trunk and retires after that :-)
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|
255 PNG_ABORT(); |
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* Datasets becomes the new trunk and retires after that :-)
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parents:
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|
256 #endif |
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* Datasets becomes the new trunk and retires after that :-)
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|
257 #ifdef PNG_NO_CONSOLE_IO |
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* Datasets becomes the new trunk and retires after that :-)
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|
258 error_message = error_message; /* make compiler happy */ |
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* Datasets becomes the new trunk and retires after that :-)
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|
259 #endif |
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* Datasets becomes the new trunk and retires after that :-)
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|
260 } |
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* Datasets becomes the new trunk and retires after that :-)
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|
261 |
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* Datasets becomes the new trunk and retires after that :-)
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changeset
|
262 #ifndef PNG_NO_WARNINGS |
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* Datasets becomes the new trunk and retires after that :-)
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|
263 /* This function is called when there is a warning, but the library thinks |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
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|
264 * it can continue anyway. Replacement functions don't have to do anything |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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|
265 * here if you don't want them to. In the default configuration, png_ptr is |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
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parents:
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|
266 * not used, but it is passed in case it may be useful. |
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* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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|
267 */ |
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* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
268 static void /* PRIVATE */ |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
269 png_default_warning(png_structp png_ptr, png_const_charp warning_message) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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|
270 { |
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* Datasets becomes the new trunk and retires after that :-)
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parents:
diff
changeset
|
271 #ifndef PNG_NO_CONSOLE_IO |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
272 # ifdef PNG_ERROR_NUMBERS_SUPPORTED |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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|
273 if (*warning_message == '#') |
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* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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|
274 { |
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* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
275 int offset; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
276 char warning_number[16]; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
277 for (offset=0; offset<15; offset++) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
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|
278 { |
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* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
279 warning_number[offset]=*(warning_message+offset+1); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
280 if (*(warning_message+offset) == ' ') |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
281 break; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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|
282 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
283 if((offset > 1) && (offset < 15)) |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
284 { |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
285 warning_number[offset-1]='\0'; |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
286 fprintf(stderr, "libpng warning no. %s: %s\n", warning_number, |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
287 warning_message+offset); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
288 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
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|
289 else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
290 fprintf(stderr, "libpng warning: %s\n", warning_message); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
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|
291 } |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
292 else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
293 # endif |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
294 fprintf(stderr, "libpng warning: %s\n", warning_message); |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
295 #else |
4a0efb7baf70
* Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff
changeset
|
296 warning_message = warning_message; /* make compiler happy */ |
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297 #endif |
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298 png_ptr = png_ptr; /* make compiler happy */ |
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299 } |
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300 #endif /* PNG_NO_WARNINGS */ |
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301 |
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302 /* This function is called when the application wants to use another method |
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303 * of handling errors and warnings. Note that the error function MUST NOT |
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304 * return to the calling routine or serious problems will occur. The return |
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305 * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1) |
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306 */ |
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307 void PNGAPI |
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308 png_set_error_fn(png_structp png_ptr, png_voidp error_ptr, |
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309 png_error_ptr error_fn, png_error_ptr warning_fn) |
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310 { |
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311 if (png_ptr == NULL) |
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312 return; |
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313 png_ptr->error_ptr = error_ptr; |
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314 png_ptr->error_fn = error_fn; |
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315 png_ptr->warning_fn = warning_fn; |
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316 } |
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317 |
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318 |
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319 /* This function returns a pointer to the error_ptr associated with the user |
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320 * functions. The application should free any memory associated with this |
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321 * pointer before png_write_destroy and png_read_destroy are called. |
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322 */ |
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323 png_voidp PNGAPI |
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324 png_get_error_ptr(png_structp png_ptr) |
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325 { |
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326 if (png_ptr == NULL) |
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327 return NULL; |
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328 return ((png_voidp)png_ptr->error_ptr); |
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329 } |
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330 |
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331 |
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332 #ifdef PNG_ERROR_NUMBERS_SUPPORTED |
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333 void PNGAPI |
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334 png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode) |
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335 { |
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336 if(png_ptr != NULL) |
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337 { |
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338 png_ptr->flags &= |
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339 ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode); |
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340 } |
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341 } |
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342 #endif |
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343 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |