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[bdf] Don't track duplicate encodings.

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There is no harm except some umbiguity in broken fonts with duplicate
encodings.

* src/bdf/bdflib.c (_bdf_parse_glyphs): Remove duplicate tracking.
(_bdf_parse_t): Remove large `have' bitfield.
This commit is contained in:
Alexei Podtelezhnikov 2018-08-15 22:50:06 -04:00
parent a0dd16fb3d
commit 923fcbcdd8
2 changed files with 11 additions and 33 deletions
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10
ChangeLog
View File

@ -1,3 +1,13 @@
2018-08-15 Alexei Podtelezhnikov <apodtele@gmail.com>
[bdf] Don't track duplicate encodings.
There is no harm except some umbiguity in broken fonts with duplicate
encodings.
* src/bdf/bdflib.c (_bdf_parse_glyphs): Remove duplicate tracking.
(_bdf_parse_t): Remove large `have' bitfield.
2018-08-15 Werner Lemberg <wl@gnu.org>
Don't use `trace_' prefix for FT_COMPONENT arguments.

34
src/bdf/bdflib.c
View File

@ -196,7 +196,6 @@
#define ACMSG9 "SWIDTH field missing at line %ld. Set automatically.\n"
#define ACMSG10 "DWIDTH field missing at line %ld. Set to glyph width.\n"
#define ACMSG11 "SIZE bits per pixel field adjusted to %hd.\n"
#define ACMSG12 "Duplicate encoding %ld (%s) changed to unencoded.\n"
#define ACMSG13 "Glyph %lu extra rows removed.\n"
#define ACMSG14 "Glyph %lu extra columns removed.\n"
#define ACMSG15 "Incorrect glyph count: %ld indicated but %ld found.\n"
@ -208,7 +207,6 @@
#define ERRMSG2 "[line %ld] Font header corrupted or missing fields.\n"
#define ERRMSG3 "[line %ld] Font glyphs corrupted or missing fields.\n"
#define ERRMSG4 "[line %ld] BBX too big.\n"
#define ERRMSG5 "[line %ld] `%s' value too big.\n"
#define ERRMSG6 "[line %ld] Input line too long.\n"
#define ERRMSG7 "[line %ld] Font name too long.\n"
#define ERRMSG8 "[line %ld] Invalid `%s' value.\n"
@ -270,8 +268,6 @@
bdf_font_t* font;
bdf_options_t* opts;
unsigned long have[34816];
_bdf_list_t list;
FT_Memory memory;
@ -1458,39 +1454,11 @@
if ( p->glyph_enc == -1 && p->list.used > 2 )
p->glyph_enc = _bdf_atol( p->list.field[2] );
if ( p->glyph_enc < -1 )
if ( p->glyph_enc < -1 || p->glyph_enc >= 0x110000L )
p->glyph_enc = -1;
FT_TRACE4(( DBGMSG2, p->glyph_enc ));
/* Check that the encoding is in the Unicode range because */
/* otherwise p->have (a bitmap with static size) overflows. */
if ( p->glyph_enc > 0 &&
(size_t)p->glyph_enc >= sizeof ( p->have ) /
sizeof ( unsigned long ) * 32 )
{
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG5, lineno, "ENCODING" ));
error = FT_THROW( Invalid_File_Format );
goto Exit;
}
/* Check whether this encoding has already been encountered. */
/* If it has then change it to unencoded so it gets added if */
/* indicated. */
if ( p->glyph_enc >= 0 )
{
if ( _bdf_glyph_modified( p->have, p->glyph_enc ) )
{
/* Emit a message saying a glyph has been moved to the */
/* unencoded area. */
FT_TRACE2(( "_bdf_parse_glyphs: " ACMSG12,
p->glyph_enc, p->glyph_name ));
p->glyph_enc = -1;
}
else
_bdf_set_glyph_modified( p->have, p->glyph_enc );
}
if ( p->glyph_enc >= 0 )
{
/* Make sure there are enough glyphs allocated in case the */