1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/******************************************************************************
*
* Purpose: Implementation of the PCIDSKException class.
*
******************************************************************************
* Copyright (c) 2009
* PCI Geomatics, 50 West Wilmot Street, Richmond Hill, Ont, Canada
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "pcidsk_config.h"
#include "pcidsk_types.h"
#include "pcidsk_exception.h"
#include <cstdlib>
#include <cstring>
#include <cstdio>
using PCIDSK::PCIDSKException;
#if defined(_MSC_VER) && (_MSC_VER < 1500)
# define vsnprintf _vsnprintf
#endif
/**
\class PCIDSK::PCIDSKException
\brief Generic SDK Exception
The PCIDSKException class is used for all errors thrown by the PCIDSK
library. It includes a formatted message and is derived from std::exception.
The PCIDSK library throws all exceptions as pointers, and library exceptions
should be caught like this:
@code
try
{
PCIDSKFile *file = PCIDSK::Open( "irvine.pix, "r", NULL );
}
catch( PCIDSK::PCIDSKException &ex )
{
fprintf( stderr, "PCIDSKException:\n%s\n", ex.what() );
exit( 1 );
}
@endcode
*/
/************************************************************************/
/* PCIDSKException() */
/************************************************************************/
/**
* Create exception with formatted message.
*
* This constructor supports formatting of an exception message
* using printf style format and additional arguments.
*
* @param fmt the printf style format (eg. "Illegal value:%d")
* @param ... additional arguments as required by the format string.
*/
PCIDSKException::PCIDSKException( const char *fmt, ... )
{
std::va_list args;
va_start( args, fmt );
vPrintf( fmt, args );
va_end( args );
}
/************************************************************************/
/* ~PCIDSKException() */
/************************************************************************/
/**
* Destructor.
*/
PCIDSKException::~PCIDSKException() throw()
{
}
/************************************************************************/
/* vPrintf() */
/************************************************************************/
/**
* Format a message.
*
* Assigns a message to an exception using printf style formatting
* and va_list arguments (similar to vfprintf().
*
* @param fmt printf style format string.
* @param args additional arguments as required.
*/
void PCIDSKException::vPrintf( const char *fmt, std::va_list args )
{
/* -------------------------------------------------------------------- */
/* This implementation for platforms without vsnprintf() will */
/* just plain fail if the formatted contents are too large. */
/* -------------------------------------------------------------------- */
#if defined(MISSING_VSNPRINTF)
char *pszBuffer = (char *) malloc(30000);
if( vsprintf( pszBuffer, fmt, args) > 29998 )
{
message = "PCIDSKException::vPrintf() ... buffer overrun.";
}
else
message = pszBuffer;
free( pszBuffer );
/* -------------------------------------------------------------------- */
/* This should grow a big enough buffer to hold any formatted */
/* result. */
/* -------------------------------------------------------------------- */
#else
char szModestBuffer[500];
int nPR;
va_list wrk_args;
#ifdef va_copy
va_copy( wrk_args, args );
#else
wrk_args = args;
#endif
nPR = vsnprintf( szModestBuffer, sizeof(szModestBuffer), fmt,
wrk_args );
if( nPR == -1 || nPR >= (int) sizeof(szModestBuffer)-1 )
{
int nWorkBufferSize = 2000;
char *pszWorkBuffer = (char *) malloc(nWorkBufferSize);
#ifdef va_copy
va_end( wrk_args );
va_copy( wrk_args, args );
#else
wrk_args = args;
#endif
while( (nPR=vsnprintf( pszWorkBuffer, nWorkBufferSize, fmt, wrk_args))
>= nWorkBufferSize-1
|| nPR == -1 )
{
nWorkBufferSize *= 4;
pszWorkBuffer = (char *) realloc(pszWorkBuffer,
nWorkBufferSize );
#ifdef va_copy
va_end( wrk_args );
va_copy( wrk_args, args );
#else
wrk_args = args;
#endif
}
message = pszWorkBuffer;
free( pszWorkBuffer );
}
else
{
message = szModestBuffer;
}
va_end( wrk_args );
#endif
}
/**
* \fn const char *PCIDSKException::what() const throw();
*
* \brief fetch exception message.
*
* @return a pointer to the internal message associated with the exception.
*/
/**
* \brief throw a formatted exception.
*
* This function throws a PCIDSK Exception by reference after formatting
* the message using the given printf style format and arguments. This
* function exists primarily so that throwing an exception can be done in
* one line of code, instead of declaring an exception and then throwing it.
*
* @param fmt the printf style format (eg. "Illegal value:%d")
* @param ... additional arguments as required by the format string.
*/
void PCIDSK::ThrowPCIDSKException( const char *fmt, ... )
{
std::va_list args;
PCIDSKException ex("");
va_start( args, fmt );
ex.vPrintf( fmt, args );
va_end( args );
throw ex;
}
|
