| 1 | /*
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| 2 | * jerror.c
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| 3 | *
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| 4 | * Copyright (C) 1991-1998, Thomas G. Lane.
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| 5 | * This file is part of the Independent JPEG Group's software.
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| 6 | * For conditions of distribution and use, see the accompanying README file.
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| 7 | *
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| 8 | * This file contains simple error-reporting and trace-message routines.
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| 9 | * These are suitable for Unix-like systems and others where writing to
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| 10 | * stderr is the right thing to do. Many applications will want to replace
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| 11 | * some or all of these routines.
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| 12 | *
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| 13 | * If you define USE_WINDOWS_MESSAGEBOX in jconfig.h or in the makefile,
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| 14 | * you get a Windows-specific hack to display error messages in a dialog box.
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| 15 | * It ain't much, but it beats dropping error messages into the bit bucket,
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| 16 | * which is what happens to output to stderr under most Windows C compilers.
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| 17 | *
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| 18 | * These routines are used by both the compression and decompression code.
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| 19 | */
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| 20 |
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| 21 | /* this is not a core library module, so it doesn't define JPEG_INTERNALS */
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| 22 | #include "jinclude.h"
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| 23 | #include "jpeglib.h"
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| 24 | #include "jversion.h"
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| 25 | #include "jerror.h"
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| 26 |
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| 27 | #ifdef USE_WINDOWS_MESSAGEBOX
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| 28 | #include <windows.h>
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| 29 | #endif
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| 30 |
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| 31 | #ifndef EXIT_FAILURE /* define exit() codes if not provided */
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| 32 | #define EXIT_FAILURE 1
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| 33 | #endif
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| 34 |
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| 35 |
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| 36 | /*
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| 37 | * Create the message string table.
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| 38 | * We do this from the master message list in jerror.h by re-reading
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| 39 | * jerror.h with a suitable definition for macro JMESSAGE.
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| 40 | * The message table is made an external symbol just in case any applications
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| 41 | * want to refer to it directly.
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| 42 | */
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| 43 |
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| 44 | #ifdef NEED_SHORT_EXTERNAL_NAMES
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| 45 | #define jpeg_std_message_table jMsgTable
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| 46 | #endif
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| 47 |
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| 48 | #define JMESSAGE(code,string) string ,
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| 49 |
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| 50 | const char * const jpeg_std_message_table[] = {
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| 51 | #include "jerror.h"
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| 52 | NULL
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| 53 | };
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| 54 |
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| 55 |
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| 56 | /*
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| 57 | * Error exit handler: must not return to caller.
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| 58 | *
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| 59 | * Applications may override this if they want to get control back after
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| 60 | * an error. Typically one would longjmp somewhere instead of exiting.
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| 61 | * The setjmp buffer can be made a private field within an expanded error
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| 62 | * handler object. Note that the info needed to generate an error message
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| 63 | * is stored in the error object, so you can generate the message now or
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| 64 | * later, at your convenience.
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| 65 | * You should make sure that the JPEG object is cleaned up (with jpeg_abort
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| 66 | * or jpeg_destroy) at some point.
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| 67 | */
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| 68 |
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| 69 | METHODDEF(void)
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| 70 | error_exit (j_common_ptr cinfo)
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| 71 | {
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| 72 | /* Always display the message */
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