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Added public APIs to set new/default trace level, started working on Callback function

This commit is contained in:
Priyeshkkumar 2020-07-02 19:50:49 +05:30
parent f7c5ed5f24
commit 1d6ffcc77a
5 changed files with 127 additions and 15 deletions
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25
[priyesh]ChangeLog
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@ -1,3 +1,28 @@
2020-07-02 Priyesh Kumar <priyeshkkumar@gmail.com>
* Fixed some code layout
* Added a new header- `include/freetype/ftlogging.h` for public APIs to
use when using logging:
1. FT_Trace_Set_Level(): Used to change trace level of components at
runtime.
2. FT_Trace_Set_Default_Level(): Used to set the default value of trace
level(which is supplied by env FT2_DEBUG)
* include/freetype/internal/ftdebug.h:
1. Added dlg support for FT_ERROR, now error messages are also written
on file if FT_LOGGING is enabled.
2. Changed `ft_debug_init()`: now it takes an argument of type const
char* which is used to specify trace level.
* src/base/ftobjs.c: Changed `ft_debug_init()`, now it passes an argument
to define trace level.
* src/base/ftdebug.c: Added definitions of public APIs
`FT_Trace_Set_Default_Level()` and `FT_Trace_Set_Level()`
* Strated working on Callback.
2020-06-30 Priyesh Kumar <priyeshkkumar@gmail.com>
* Adding new line at end of file

30
include/freetype/ftlogging.h Normal file
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@ -0,0 +1,30 @@
#include FT_CONFIG_CONFIG_H
FT_BEGIN_HEADER
/***************************************************************************
*
* If FT_LOGGING is enabled, user can change the trace level at run time
* using the function `FT_Trace_Set_Level()` by passing the desired trace
* level as an argument.
* User can also set the default trace level which is supplied by
* environment variable `FT2_DEBUG`
*
*/
typedef void
(*ft_ouput_handler)( const char* string );
FT_EXPORT( void )
FT_Trace_Set_Level( const char* level );
FT_EXPORT( void )
FT_Trace_Set_Default_Level( void );
FT_EXPORT( void )
FT_Trace_Set_Output( ft_ouput_handler handler );
FT_EXPORT( void )
FT_Trace_Set_Default_Output();
FT_END_HEADER

33
include/freetype/internal/ftdebug.h
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@ -29,11 +29,18 @@
#include FT_CONFIG_CONFIG_H
#include <freetype/freetype.h>
/* Additional include files for supporting logging in FreeType using */
/* external logging library ~ src/dlg */
/* */
/**************************************************************************
*
* Additional include files for supporting logging in FreeType using
* external logging library ~ src/dlg and freetype/ftlogging.h
*
*/
#ifdef FT_LOGGING
#include <../src/dlg/include/dlg/dlg.h>
#include <../src/dlg/include/dlg/output.h>
#include <freetype/ftlogging.h>
#endif /* FT_LOGGING */
FT_BEGIN_HEADER
@ -104,6 +111,8 @@ FT_BEGIN_HEADER
#ifdef FT_LOGGING
static ft_ouput_handler freetype_output_handler = NULL;
#undef FT_Log
#define FT_Log dlg_trace
@ -117,7 +126,7 @@ FT_BEGIN_HEADER
*/
FT_BASE( void )
ft_freetype_output_handler( const struct dlg_origin* origin,
ft_default_output_handler( const struct dlg_origin* origin,
const char* string, void* data );
#else
@ -247,8 +256,22 @@ FT_BEGIN_HEADER
#ifdef FT_DEBUG_LEVEL_ERROR
#ifdef FT_LOGGING
#define FT_ERROR( varformat ) \
do \
{ \
dlg_add_tag( "error_log", NULL ); \
dlg_trace varformat; \
dlg_remove_tag( "error_log", NULL ); \
} while ( 0 )
#else
#define FT_ERROR( varformat ) FT_Message varformat
#endif /* FT_LOGGING */
#else /* !FT_DEBUG_LEVEL_ERROR */
#define FT_ERROR( varformat ) do { } while ( 0 ) /* nothing */
@ -318,7 +341,7 @@ FT_BEGIN_HEADER
FT_BASE( void )
ft_debug_init( void );
ft_debug_init( const char* level );
#ifdef FT_LOGGING

52
src/base/ftdebug.c
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@ -193,9 +193,9 @@
* runtime errors), and 7 means _very_ verbose.
*/
FT_BASE_DEF( void )
ft_debug_init( void )
ft_debug_init( const char* level )
{
const char* ft2_debug = ft_getenv( "FT2_DEBUG" );
const char* ft2_debug = level;
if ( ft2_debug )
@ -274,7 +274,7 @@
FT_BASE_DEF( void )
ft_debug_init( void )
ft_debug_init( const char* level )
{
/* nothing */
}
@ -337,10 +337,10 @@
ft_logging_init( void )
{
fileptr = fopen( "freetype2.log", "w" );
ft_debug_init();
FT_Trace_Set_Default_Level();
/* We need to set the default FreeType specific dlg's output handler */
dlg_set_handler( &ft_freetype_output_handler, NULL );
dlg_set_handler( &ft_default_output_handler, NULL );
}
FT_BASE_DEF( void )
@ -349,15 +349,14 @@
fclose( fileptr );
}
FT_BASE_DEF( void )
/*************************************************************************
*
* TODO:
* 1. Add support for priniting FT_COMPONENT
*
*/
ft_freetype_output_handler( const struct dlg_origin* origin,
*/
FT_BASE_DEF( void )
ft_default_output_handler( const struct dlg_origin* origin,
const char* string, void* data )
{
unsigned int features = dlg_output_threadsafe /*| dlg_output_tags*/ ;
@ -365,6 +364,41 @@
dlg_default_output_styles );
}
/**************************************************************************
*
*
*
*/
FT_EXPORT_DEF( void )
FT_Trace_Set_Level( const char* level )
{
ft_debug_init( level );
}
FT_EXPORT_DEF( void )
FT_Trace_Set_Default_Level( void )
{
ft_debug_init( ft_getenv( "FT2_DEBUG" ) );
}
/****************************************************************************
*
*
*
*/
FT_EXPORT_DEF( void )
FT_Trace_Set_Output( ft_ouput_handler handler )
{
freetype_output_handler = handler;
}
FT_EXPORT_DEF( void )
FT_Trace_Set_Default_Output()
{
freetype_output_handler = NULL;
}
#endif /* FT_LOGGING */
/* END */

2
src/base/ftobjs.c
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@ -5276,7 +5276,7 @@
#ifndef FT_LOGGING
#ifdef FT_DEBUG_LEVEL_ERROR
/* init debugging support */
ft_debug_init();
ft_debug_init( ft_getenv( "FT2_DEBUG" ) );
#endif /* FT_DEBUG_LEVEL_ERROR */
#endif /* FT_LOGGING */