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* src/pcf/pcfdriver.c (pcf_cmap_char_next): fixed a bug that caused

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the function to return invalid values.
This commit is contained in:
David Turner 2002-06-10 22:41:57 +00:00
parent 4d12d89dcd
commit b1d8f73df6
4 changed files with 82 additions and 65 deletions
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13
ChangeLog
View File

@ -1,11 +1,14 @@
2002-06-08 David Turner <david@freetype.org>
* src/cache/ftccache.i: removing a typo that prevented
the source's compilation
* src/pcf/pcfdriver.c (pcf_cmap_char_next): fixed a bug that caused
the function to return invalid values.
* src/cache/ftccache.c (ftc_node_hash_unlink): fixed a
* src/cache/ftccache.i: removing a typo that prevented
the source's compilation
* src/cache/ftccache.c (ftc_node_hash_unlink): fixed a
bug that caused nasty memory overwrites. the hash table's
buckets array wasn't correctly resized when shrinked.
buckets array wasn't correctly resized when shrinked.
2002-06-08 Detlef Würkner <TetiSoft@apg.lahn.de>
@ -167,7 +170,7 @@
* include/freetype/ftxf86.h, src/base/ftxf86.c: New files.
They provide a new API (FT_Get_X11_Font_Format) to retrieve an
X11-compatible string describing the font format of a given face.
X11-compatible string describing the font format of a given face.
This was put in a new optional base source file, corresponding to a
new public header (named FT_XFREE86_H since this function should
only be used within the XFree86 font server IMO).

41
builds/win32/ftdebug.c
View File

@ -48,11 +48,11 @@
#ifdef FT_DEBUG_LEVEL_ERROR
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
# include <stdarg.h>
# include <stdlib.h>
# include <string.h>
#include <windows.h>
# include <windows.h>
FT_EXPORT_DEF( void )
@ -85,22 +85,22 @@
}
#ifdef FT_DEBUG_LEVEL_TRACE
# ifdef FT_DEBUG_LEVEL_TRACE
/* array of trace levels, initialized to 0 */
int ft_trace_levels[trace_count];
/* define array of trace toggle names */
#define FT_TRACE_DEF( x ) #x ,
# define FT_TRACE_DEF( x ) #x ,
static const char* ft_trace_toggles[trace_count + 1] =
{
#include FT_INTERNAL_TRACE_H
{
# include FT_INTERNAL_TRACE_H
NULL
};
#undef FT_TRACE_DEF
# undef FT_TRACE_DEF
/*************************************************************************/
@ -125,49 +125,49 @@
ft_debug_init( void )
{
const char* ft2_debug = getenv( "FT2_DEBUG" );
if ( ft2_debug )
{
const char* p = ft2_debug;
const char* q;
for ( ; *p; p++ )
{
/* skip leading whitespace and separators */
if ( *p == ' ' || *p == '\t' || *p == ':' || *p == ';' || *p == '=' )
continue;
/* read toggle name, followed by '=' */
q = p;
while ( *p && *p != '=' )
p++;
if ( *p == '=' && p > q )
{
int n, i, len = p - q;
int level = -1, found = -1;
for ( n = 0; n < trace_count; n++ )
{
const char* toggle = ft_trace_toggles[n];
for ( i = 0; i < len; i++ )
{
if ( toggle[i] != q[i] )
break;
}
if ( i == len && toggle[i] == 0 )
{
found = n;
break;
}
}
/* read level */
p++;
if ( *p )
@ -176,7 +176,7 @@
if ( level < 0 || level > 6 )
level = -1;
}
if ( found >= 0 && level >= 0 )
{
if ( found == trace_any )
@ -194,7 +194,7 @@
}
#else /* !FT_DEBUG_LEVEL_TRACE */
# else /* !FT_DEBUG_LEVEL_TRACE */
FT_BASE_DEF( void )
@ -204,7 +204,8 @@
}
#endif /* !FT_DEBUG_LEVEL_TRACE */
# endif /* !FT_DEBUG_LEVEL_TRACE */
#endif /* FT_DEBUG_LEVEL_ERROR */
/* END */

19
docs/CHANGES
View File

@ -23,7 +23,7 @@ LATEST CHANGES BETWEEN 2.1.1 and 2.1.0
- The TrueType name table loader has been improved to support many
popular though buggy Asian fonts. It now ignores empty name entries,
invalid pointer offsets and a few other incorrect subtleties.
invalid pointer offsets and a few other incorrect subtleties.
Moreover, name strings are now loaded on demand, which reduces the
memory load of many faces (e.g. the ARIAL.TTF font file contains a
10kByte name table with 70 names).
@ -41,14 +41,27 @@ LATEST CHANGES BETWEEN 2.1.1 and 2.1.0
(using a slightly extended BDF format).
* A Type42 font driver, contributed by Roberto Alameda. It is
still experimental but seems to work relatively well. Currently,
charmap support is not fully implemented.
still experimental but seems to work relatively well.
* A PFR font driver, contributed by David Turner himself. It doesn't
support PFR hinting -- note that BitStream has at least two patents
on this format!
III. MISCELLANEOUS
- The cache sub-system has been optimized in important ways. Cache hits are
now significantly faster. For example, using the CMap cache is about
twice faster than calling FT_Get_Char_Index on most platforms. Similarly,
using a SBit cache is about 5x faster than loading the bitmaps from a
bitmap file, and 300x to 500x than generating them from a scalable
format :-)
Note that you should recompile your sources if you designed a custom
cache class for the FT2 Cache subsystem, since the changes performed
are source, but not binary, compatible...
========================================================================
LATEST CHANGES BETWEEN 2.1.0 and 2.0.9

74
src/pcf/pcfdriver.c
View File

@ -48,7 +48,7 @@ THE SOFTWARE.
FT_CMapRec cmap;
FT_UInt num_encodings;
PCF_Encoding encodings;
} PCF_CMapRec, *PCF_CMap;
@ -56,22 +56,22 @@ THE SOFTWARE.
pcf_cmap_init( PCF_CMap cmap )
{
PCF_Face face = (PCF_Face)FT_CMAP_FACE( cmap );
cmap->num_encodings = (FT_UInt)face->nencodings;
cmap->encodings = face->encodings;
return FT_Err_Ok;
}
FT_CALLBACK_DEF( void )
pcf_cmap_done( PCF_CMap cmap )
{
cmap->encodings = NULL;
cmap->encodings = NULL;
cmap->num_encodings = 0;
}
FT_CALLBACK_DEF( FT_UInt )
pcf_cmap_char_index( PCF_CMap cmap,
@ -80,33 +80,33 @@ THE SOFTWARE.
PCF_Encoding encodings = cmap->encodings;
FT_UInt min, max, mid;
FT_UInt result = 0;
min = 0;
max = cmap->num_encodings;
while ( min < max )
{
FT_UInt32 code;
mid = ( min + max ) >> 1;
code = encodings[mid].enc;
if ( charcode == code )
{
result = encodings[mid].glyph;
break;
}
if ( charcode < code )
max = mid;
else
min = mid + 1;
}
return result;
}
}
FT_CALLBACK_DEF( FT_UInt )
@ -117,42 +117,42 @@ THE SOFTWARE.
FT_UInt min, max, mid;
FT_UInt32 charcode = *acharcode + 1;
FT_UInt result = 0;
min = 0;
max = cmap->num_encodings;
while ( min < max )
{
FT_UInt32 code;
mid = ( min + max ) >> 1;
code = encodings[mid].enc;
if ( charcode == code )
{
result = encodings[mid].glyph;
goto Exit;
}
if ( charcode < code )
max = mid;
else
min = mid + 1;
}
charcode = 0;
if ( ++min < cmap->num_encodings )
if ( min < cmap->num_encodings )
{
charcode = encodings[min].enc;
result = encodings[min].glyph;
}
Exit:
*acharcode = charcode;
return result;
}
}
FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec pcf_cmap_class =
@ -204,7 +204,7 @@ THE SOFTWARE.
FT_TRACE4(( "get_next_char %ld\n", char_code ));
char_code++;
low = 0;
high = face->nencodings - 1;
@ -222,7 +222,7 @@ THE SOFTWARE.
if ( high < 0 )
high = 0;
while ( high < face->nencodings )
{
if ( en_table[high].enc >= char_code )
@ -259,20 +259,20 @@ THE SOFTWARE.
{
PCF_Property prop = face->properties;
FT_Int i;
for ( i = 0; i < face->nprops; i++ )
{
prop = &face->properties[i];
FT_FREE( prop->name );
if ( prop->isString )
FT_FREE( prop->value );
}
FT_FREE( face->properties );
}
FT_FREE( face->toc.tables );
FT_FREE( face->root.family_name );
FT_FREE( face->root.available_sizes );
@ -325,20 +325,20 @@ THE SOFTWARE.
{
FT_CharMapRec charmap;
charmap.face = FT_FACE( face );
charmap.encoding = ft_encoding_none;
charmap.platform_id = 0;
charmap.encoding_id = 0;
if ( unicode_charmap )
{
charmap.encoding = ft_encoding_unicode;
charmap.platform_id = 3;
charmap.encoding_id = 1;
}
error = FT_CMap_New( &pcf_cmap_class, NULL, &charmap, NULL );
}
@ -358,15 +358,15 @@ THE SOFTWARE.
face->charmap.platform_id = 3;
face->charmap.encoding_id = 1;
}
face->charmap.face = &face->root;
face->charmap_handle = &face->charmap;
face->root.charmap = face->charmap_handle;
#endif /* !FT_CONFIG_OPTION_USE_CMAPS */
#endif /* !FT_CONFIG_OPTION_USE_CMAPS */
}
Exit:
return error;
@ -552,7 +552,7 @@ THE SOFTWARE.
(FT_Slot_LoadFunc) PCF_Glyph_Load,
#ifndef FT_CONFIG_OPTION_USE_CMAPS
#ifndef FT_CONFIG_OPTION_USE_CMAPS
(FT_CharMap_CharIndexFunc)PCF_Char_Get_Index,
#else
(FT_CharMap_CharIndexFunc)0,
@ -566,7 +566,7 @@ THE SOFTWARE.
(FT_CharMap_CharNextFunc) PCF_Char_Get_Next,
#else
(FT_CharMap_CharNextFunc) 0
#endif
#endif
};