Visualization Library 2.0.0-b5

A lightweight C++ OpenGL middleware for 2D/3D graphics

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ftdebug.c
Go to the documentation of this file.
1 /***************************************************************************/
2 /* */
3 /* ftdebug.c */
4 /* */
5 /* Debugging and logging component for Win32 (body). */
6 /* */
7 /* Copyright 1996-2001, 2002, 2005, 2008, 2009, 2013 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17 
18 
19  /*************************************************************************/
20  /* */
21  /* This component contains various macros and functions used to ease the */
22  /* debugging of the FreeType engine. Its main purpose is in assertion */
23  /* checking, tracing, and error detection. */
24  /* */
25  /* There are now three debugging modes: */
26  /* */
27  /* - trace mode */
28  /* */
29  /* Error and trace messages are sent to the log file (which can be the */
30  /* standard error output). */
31  /* */
32  /* - error mode */
33  /* */
34  /* Only error messages are generated. */
35  /* */
36  /* - release mode: */
37  /* */
38  /* No error message is sent or generated. The code is free from any */
39  /* debugging parts. */
40  /* */
41  /*************************************************************************/
42 
43 
44 #include <ft2build.h>
45 #include FT_INTERNAL_DEBUG_H
46 
47 
48 #ifdef FT_DEBUG_LEVEL_ERROR
49 
50 #include <stdarg.h>
51 #include <stdlib.h>
52 #include <string.h>
53 
54 #include <windows.h>
55 
56 
57  /* documentation is in ftdebug.h */
58 
59  FT_BASE_DEF( void )
60  FT_Message( const char* fmt,
61  ... )
62  {
63  static char buf[8192];
64  va_list ap;
65 
66 
67  va_start( ap, fmt );
68  vprintf( fmt, ap );
69  /* send the string to the debugger as well */
70  vsprintf( buf, fmt, ap );
71  OutputDebugStringA( buf );
72  va_end( ap );
73  }
74 
75 
76  /* documentation is in ftdebug.h */
77 
78  FT_BASE_DEF( void )
79  FT_Panic( const char* fmt,
80  ... )
81  {
82  static char buf[8192];
83  va_list ap;
84 
85 
86  va_start( ap, fmt );
87  vsprintf( buf, fmt, ap );
88  OutputDebugStringA( buf );
89  va_end( ap );
90 
91  exit( EXIT_FAILURE );
92  }
93 
94 
95  /* documentation is in ftdebug.h */
96 
97  FT_BASE_DEF( int )
98  FT_Throw( FT_Error error,
99  int line,
100  const char* file )
101  {
102  FT_UNUSED( error );
103  FT_UNUSED( line );
104  FT_UNUSED( file );
105 
106  return 0;
107  }
108 
109 
110 #ifdef FT_DEBUG_LEVEL_TRACE
111 
112 
113  /* array of trace levels, initialized to 0 */
114  int ft_trace_levels[trace_count];
115 
116  /* define array of trace toggle names */
117 #define FT_TRACE_DEF( x ) #x ,
118 
119  static const char* ft_trace_toggles[trace_count + 1] =
120  {
121 #include FT_INTERNAL_TRACE_H
122  NULL
123  };
124 
125 #undef FT_TRACE_DEF
126 
127 
128  /*************************************************************************/
129  /* */
130  /* Initialize the tracing sub-system. This is done by retrieving the */
131  /* value of the "FT2_DEBUG" environment variable. It must be a list of */
132  /* toggles, separated by spaces, `;' or `,'. Example: */
133  /* */
134  /* "any:3 memory:6 stream:5" */
135  /* */
136  /* This will request that all levels be set to 3, except the trace level */
137  /* for the memory and stream components which are set to 6 and 5, */
138  /* respectively. */
139  /* */
140  /* See the file <freetype/internal/fttrace.h> for details of the */
141  /* available toggle names. */
142  /* */
143  /* The level must be between 0 and 6; 0 means quiet (except for serious */
144  /* runtime errors), and 6 means _very_ verbose. */
145  /* */
146  FT_BASE_DEF( void )
147  ft_debug_init( void )
148  {
149  const char* ft2_debug = getenv( "FT2_DEBUG" );
150 
151 
152  if ( ft2_debug )
153  {
154  const char* p = ft2_debug;
155  const char* q;
156 
157 
158  for ( ; *p; p++ )
159  {
160  /* skip leading whitespace and separators */
161  if ( *p == ' ' || *p == '\t' || *p == ',' || *p == ';' || *p == '=' )
162  continue;
163 
164  /* read toggle name, followed by ':' */
165  q = p;
166  while ( *p && *p != ':' )
167  p++;
168 
169  if ( *p == ':' && p > q )
170  {
171  int n, i, len = p - q;
172  int level = -1, found = -1;
173 
174 
175  for ( n = 0; n < trace_count; n++ )
176  {
177  const char* toggle = ft_trace_toggles[n];
178 
179 
180  for ( i = 0; i < len; i++ )
181  {
182  if ( toggle[i] != q[i] )
183  break;
184  }
185 
186  if ( i == len && toggle[i] == 0 )
187  {
188  found = n;
189  break;
190  }
191  }
192 
193  /* read level */
194  p++;
195  if ( *p )
196  {
197  level = *p++ - '0';
198  if ( level < 0 || level > 7 )
199  level = -1;
200  }
201 
202  if ( found >= 0 && level >= 0 )
203  {
204  if ( found == trace_any )
205  {
206  /* special case for "any" */
207  for ( n = 0; n < trace_count; n++ )
208  ft_trace_levels[n] = level;
209  }
210  else
211  ft_trace_levels[found] = level;
212  }
213  }
214  }
215  }
216  }
217 
218 
219 #else /* !FT_DEBUG_LEVEL_TRACE */
220 
221 
222  FT_BASE_DEF( void )
223  ft_debug_init( void )
224  {
225  /* nothing */
226  }
227 
228 
229 #endif /* !FT_DEBUG_LEVEL_TRACE */
230 
231 #endif /* FT_DEBUG_LEVEL_ERROR */
232 
233 
234 /* END */
int FT_Error
Definition: fttypes.h:296
GLfloat GLfloat p
#define NULL
Definition: ftobjs.h:61
GLdouble GLdouble GLdouble GLdouble q
#define FT_UNUSED(arg)
Definition: ftconfig.h:76
png_uint_32 i
Definition: png.h:2640
GLenum GLuint GLenum GLsizei const GLchar * buf
#define FT_BASE_DEF(x)
Definition: ftconfig.h:258
GLenum GLsizei len
GLint level
FT_Error error
Definition: cffdrivr.c:411
GLdouble n
ft_debug_init(void)
Definition: ftdebug.c:265
#define EXIT_FAILURE
Definition: cdjpeg.h:169