0,0 → 1,2625 |
/* |
* Copyright 2000 Computing Research Labs, New Mexico State University |
* Copyright 2001-2013 |
* Francesco Zappa Nardelli |
* |
* 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 COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY 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. |
*/ |
|
/*************************************************************************/ |
/* */ |
/* This file is based on bdf.c,v 1.22 2000/03/16 20:08:50 */ |
/* */ |
/* taken from Mark Leisher's xmbdfed package */ |
/* */ |
/*************************************************************************/ |
|
|
#include <ft2build.h> |
|
#include FT_FREETYPE_H |
#include FT_INTERNAL_DEBUG_H |
#include FT_INTERNAL_STREAM_H |
#include FT_INTERNAL_OBJECTS_H |
|
#include "bdf.h" |
#include "bdferror.h" |
|
|
/*************************************************************************/ |
/* */ |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
/* messages during execution. */ |
/* */ |
#undef FT_COMPONENT |
#define FT_COMPONENT trace_bdflib |
|
|
/*************************************************************************/ |
/* */ |
/* Default BDF font options. */ |
/* */ |
/*************************************************************************/ |
|
|
static const bdf_options_t _bdf_opts = |
{ |
1, /* Correct metrics. */ |
1, /* Preserve unencoded glyphs. */ |
0, /* Preserve comments. */ |
BDF_PROPORTIONAL /* Default spacing. */ |
}; |
|
|
/*************************************************************************/ |
/* */ |
/* Builtin BDF font properties. */ |
/* */ |
/*************************************************************************/ |
|
/* List of most properties that might appear in a font. Doesn't include */ |
/* the RAW_* and AXIS_* properties in X11R6 polymorphic fonts. */ |
|
static const bdf_property_t _bdf_properties[] = |
{ |
{ (char *)"ADD_STYLE_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"AVERAGE_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"AVG_CAPITAL_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"AVG_LOWERCASE_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"CAP_HEIGHT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"CHARSET_COLLECTIONS", BDF_ATOM, 1, { 0 } }, |
{ (char *)"CHARSET_ENCODING", BDF_ATOM, 1, { 0 } }, |
{ (char *)"CHARSET_REGISTRY", BDF_ATOM, 1, { 0 } }, |
{ (char *)"COMMENT", BDF_ATOM, 1, { 0 } }, |
{ (char *)"COPYRIGHT", BDF_ATOM, 1, { 0 } }, |
{ (char *)"DEFAULT_CHAR", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"DESTINATION", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"DEVICE_FONT_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"END_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"FACE_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"FAMILY_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"FIGURE_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"FONT", BDF_ATOM, 1, { 0 } }, |
{ (char *)"FONTNAME_REGISTRY", BDF_ATOM, 1, { 0 } }, |
{ (char *)"FONT_ASCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"FONT_DESCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"FOUNDRY", BDF_ATOM, 1, { 0 } }, |
{ (char *)"FULL_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"ITALIC_ANGLE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"MAX_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"MIN_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"NORM_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"NOTICE", BDF_ATOM, 1, { 0 } }, |
{ (char *)"PIXEL_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"POINT_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"QUAD_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_ASCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_AVERAGE_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_AVG_CAPITAL_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_AVG_LOWERCASE_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_CAP_HEIGHT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_DESCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_END_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_FIGURE_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_MAX_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_MIN_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_NORM_SPACE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_PIXEL_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_POINT_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_PIXELSIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_POINTSIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_QUAD_WIDTH", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SMALL_CAP_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_STRIKEOUT_ASCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_STRIKEOUT_DESCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SUBSCRIPT_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SUBSCRIPT_X", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SUBSCRIPT_Y", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SUPERSCRIPT_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SUPERSCRIPT_X", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_SUPERSCRIPT_Y", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_UNDERLINE_POSITION", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_UNDERLINE_THICKNESS", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RAW_X_HEIGHT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RELATIVE_SETWIDTH", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"RELATIVE_WEIGHT", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"RESOLUTION", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"RESOLUTION_X", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"RESOLUTION_Y", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"SETWIDTH_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"SLANT", BDF_ATOM, 1, { 0 } }, |
{ (char *)"SMALL_CAP_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SPACING", BDF_ATOM, 1, { 0 } }, |
{ (char *)"STRIKEOUT_ASCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"STRIKEOUT_DESCENT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SUBSCRIPT_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SUBSCRIPT_X", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SUBSCRIPT_Y", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SUPERSCRIPT_SIZE", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SUPERSCRIPT_X", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"SUPERSCRIPT_Y", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"UNDERLINE_POSITION", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"UNDERLINE_THICKNESS", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"WEIGHT", BDF_CARDINAL, 1, { 0 } }, |
{ (char *)"WEIGHT_NAME", BDF_ATOM, 1, { 0 } }, |
{ (char *)"X_HEIGHT", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"_MULE_BASELINE_OFFSET", BDF_INTEGER, 1, { 0 } }, |
{ (char *)"_MULE_RELATIVE_COMPOSE", BDF_INTEGER, 1, { 0 } }, |
}; |
|
static const unsigned long |
_num_bdf_properties = sizeof ( _bdf_properties ) / |
sizeof ( _bdf_properties[0] ); |
|
|
/* Auto correction messages. */ |
#define ACMSG1 "FONT_ASCENT property missing. " \ |
"Added `FONT_ASCENT %hd'.\n" |
#define ACMSG2 "FONT_DESCENT property missing. " \ |
"Added `FONT_DESCENT %hd'.\n" |
#define ACMSG3 "Font width != actual width. Old: %hd New: %hd.\n" |
#define ACMSG4 "Font left bearing != actual left bearing. " \ |
"Old: %hd New: %hd.\n" |
#define ACMSG5 "Font ascent != actual ascent. Old: %hd New: %hd.\n" |
#define ACMSG6 "Font descent != actual descent. Old: %hd New: %hd.\n" |
#define ACMSG7 "Font height != actual height. Old: %hd New: %hd.\n" |
#define ACMSG8 "Glyph scalable width (SWIDTH) adjustments made.\n" |
#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 %ld extra rows removed.\n" |
#define ACMSG14 "Glyph %ld extra columns removed.\n" |
#define ACMSG15 "Incorrect glyph count: %ld indicated but %ld found.\n" |
#define ACMSG16 "Glyph %ld missing columns padded with zero bits.\n" |
|
/* Error messages. */ |
#define ERRMSG1 "[line %ld] Missing `%s' line.\n" |
#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" |
#define ERRMSG9 "[line %ld] Invalid keyword.\n" |
|
/* Debug messages. */ |
#define DBGMSG1 " [%6ld] %s" /* no \n */ |
#define DBGMSG2 " (0x%lX)\n" |
|
|
/*************************************************************************/ |
/* */ |
/* Hash table utilities for the properties. */ |
/* */ |
/*************************************************************************/ |
|
/* XXX: Replace this with FreeType's hash functions */ |
|
|
#define INITIAL_HT_SIZE 241 |
|
typedef void |
(*hash_free_func)( hashnode node ); |
|
static hashnode* |
hash_bucket( const char* key, |
hashtable* ht ) |
{ |
const char* kp = key; |
unsigned long res = 0; |
hashnode* bp = ht->table, *ndp; |
|
|
/* Mocklisp hash function. */ |
while ( *kp ) |
res = ( res << 5 ) - res + *kp++; |
|
ndp = bp + ( res % ht->size ); |
while ( *ndp ) |
{ |
kp = (*ndp)->key; |
if ( kp[0] == key[0] && ft_strcmp( kp, key ) == 0 ) |
break; |
ndp--; |
if ( ndp < bp ) |
ndp = bp + ( ht->size - 1 ); |
} |
|
return ndp; |
} |
|
|
static FT_Error |
hash_rehash( hashtable* ht, |
FT_Memory memory ) |
{ |
hashnode* obp = ht->table, *bp, *nbp; |
int i, sz = ht->size; |
FT_Error error = FT_Err_Ok; |
|
|
ht->size <<= 1; |
ht->limit = ht->size / 3; |
|
if ( FT_NEW_ARRAY( ht->table, ht->size ) ) |
goto Exit; |
|
for ( i = 0, bp = obp; i < sz; i++, bp++ ) |
{ |
if ( *bp ) |
{ |
nbp = hash_bucket( (*bp)->key, ht ); |
*nbp = *bp; |
} |
} |
FT_FREE( obp ); |
|
Exit: |
return error; |
} |
|
|
static FT_Error |
hash_init( hashtable* ht, |
FT_Memory memory ) |
{ |
int sz = INITIAL_HT_SIZE; |
FT_Error error = FT_Err_Ok; |
|
|
ht->size = sz; |
ht->limit = sz / 3; |
ht->used = 0; |
|
if ( FT_NEW_ARRAY( ht->table, sz ) ) |
goto Exit; |
|
Exit: |
return error; |
} |
|
|
static void |
hash_free( hashtable* ht, |
FT_Memory memory ) |
{ |
if ( ht != 0 ) |
{ |
int i, sz = ht->size; |
hashnode* bp = ht->table; |
|
|
for ( i = 0; i < sz; i++, bp++ ) |
FT_FREE( *bp ); |
|
FT_FREE( ht->table ); |
} |
} |
|
|
static FT_Error |
hash_insert( char* key, |
size_t data, |
hashtable* ht, |
FT_Memory memory ) |
{ |
hashnode nn; |
hashnode* bp = hash_bucket( key, ht ); |
FT_Error error = FT_Err_Ok; |
|
|
nn = *bp; |
if ( !nn ) |
{ |
if ( FT_NEW( nn ) ) |
goto Exit; |
*bp = nn; |
|
nn->key = key; |
nn->data = data; |
|
if ( ht->used >= ht->limit ) |
{ |
error = hash_rehash( ht, memory ); |
if ( error ) |
goto Exit; |
} |
ht->used++; |
} |
else |
nn->data = data; |
|
Exit: |
return error; |
} |
|
|
static hashnode |
hash_lookup( const char* key, |
hashtable* ht ) |
{ |
hashnode *np = hash_bucket( key, ht ); |
|
|
return *np; |
} |
|
|
/*************************************************************************/ |
/* */ |
/* Utility types and functions. */ |
/* */ |
/*************************************************************************/ |
|
|
/* Function type for parsing lines of a BDF font. */ |
|
typedef FT_Error |
(*_bdf_line_func_t)( char* line, |
unsigned long linelen, |
unsigned long lineno, |
void* call_data, |
void* client_data ); |
|
|
/* List structure for splitting lines into fields. */ |
|
typedef struct _bdf_list_t_ |
{ |
char** field; |
unsigned long size; |
unsigned long used; |
FT_Memory memory; |
|
} _bdf_list_t; |
|
|
/* Structure used while loading BDF fonts. */ |
|
typedef struct _bdf_parse_t_ |
{ |
unsigned long flags; |
unsigned long cnt; |
unsigned long row; |
|
short minlb; |
short maxlb; |
short maxrb; |
short maxas; |
short maxds; |
|
short rbearing; |
|
char* glyph_name; |
long glyph_enc; |
|
bdf_font_t* font; |
bdf_options_t* opts; |
|
unsigned long have[34816]; /* must be in sync with `nmod' and `umod' */ |
/* arrays from `bdf_font_t' structure */ |
_bdf_list_t list; |
|
FT_Memory memory; |
|
} _bdf_parse_t; |
|
|
#define setsbit( m, cc ) \ |
( m[(FT_Byte)(cc) >> 3] |= (FT_Byte)( 1 << ( (cc) & 7 ) ) ) |
#define sbitset( m, cc ) \ |
( m[(FT_Byte)(cc) >> 3] & ( 1 << ( (cc) & 7 ) ) ) |
|
|
static void |
_bdf_list_init( _bdf_list_t* list, |
FT_Memory memory ) |
{ |
FT_ZERO( list ); |
list->memory = memory; |
} |
|
|
static void |
_bdf_list_done( _bdf_list_t* list ) |
{ |
FT_Memory memory = list->memory; |
|
|
if ( memory ) |
{ |
FT_FREE( list->field ); |
FT_ZERO( list ); |
} |
} |
|
|
static FT_Error |
_bdf_list_ensure( _bdf_list_t* list, |
unsigned long num_items ) /* same as _bdf_list_t.used */ |
{ |
FT_Error error = FT_Err_Ok; |
|
|
if ( num_items > list->size ) |
{ |
unsigned long oldsize = list->size; /* same as _bdf_list_t.size */ |
unsigned long newsize = oldsize + ( oldsize >> 1 ) + 5; |
unsigned long bigsize = (unsigned long)( FT_INT_MAX / sizeof ( char* ) ); |
FT_Memory memory = list->memory; |
|
|
if ( oldsize == bigsize ) |
{ |
error = FT_THROW( Out_Of_Memory ); |
goto Exit; |
} |
else if ( newsize < oldsize || newsize > bigsize ) |
newsize = bigsize; |
|
if ( FT_RENEW_ARRAY( list->field, oldsize, newsize ) ) |
goto Exit; |
|
list->size = newsize; |
} |
|
Exit: |
return error; |
} |
|
|
static void |
_bdf_list_shift( _bdf_list_t* list, |
unsigned long n ) |
{ |
unsigned long i, u; |
|
|
if ( list == 0 || list->used == 0 || n == 0 ) |
return; |
|
if ( n >= list->used ) |
{ |
list->used = 0; |
return; |
} |
|
for ( u = n, i = 0; u < list->used; i++, u++ ) |
list->field[i] = list->field[u]; |
list->used -= n; |
} |
|
|
/* An empty string for empty fields. */ |
|
static const char empty[1] = { 0 }; /* XXX eliminate this */ |
|
|
static char * |
_bdf_list_join( _bdf_list_t* list, |
int c, |
unsigned long *alen ) |
{ |
unsigned long i, j; |
char* dp; |
|
|
*alen = 0; |
|
if ( list == 0 || list->used == 0 ) |
return 0; |
|
dp = list->field[0]; |
for ( i = j = 0; i < list->used; i++ ) |
{ |
char* fp = list->field[i]; |
|
|
while ( *fp ) |
dp[j++] = *fp++; |
|
if ( i + 1 < list->used ) |
dp[j++] = (char)c; |
} |
if ( dp != empty ) |
dp[j] = 0; |
|
*alen = j; |
return dp; |
} |
|
|
/* The code below ensures that we have at least 4 + 1 `field' */ |
/* elements in `list' (which are possibly NULL) so that we */ |
/* don't have to check the number of fields in most cases. */ |
|
static FT_Error |
_bdf_list_split( _bdf_list_t* list, |
char* separators, |
char* line, |
unsigned long linelen ) |
{ |
int mult, final_empty; |
char *sp, *ep, *end; |
char seps[32]; |
FT_Error error = FT_Err_Ok; |
|
|
/* Initialize the list. */ |
list->used = 0; |
if ( list->size ) |
{ |
list->field[0] = (char*)empty; |
list->field[1] = (char*)empty; |
list->field[2] = (char*)empty; |
list->field[3] = (char*)empty; |
list->field[4] = (char*)empty; |
} |
|
/* If the line is empty, then simply return. */ |
if ( linelen == 0 || line[0] == 0 ) |
goto Exit; |
|
/* In the original code, if the `separators' parameter is NULL or */ |
/* empty, the list is split into individual bytes. We don't need */ |
/* this, so an error is signaled. */ |
if ( separators == 0 || *separators == 0 ) |
{ |
error = FT_THROW( Invalid_Argument ); |
goto Exit; |
} |
|
/* Prepare the separator bitmap. */ |
FT_MEM_ZERO( seps, 32 ); |
|
/* If the very last character of the separator string is a plus, then */ |
/* set the `mult' flag to indicate that multiple separators should be */ |
/* collapsed into one. */ |
for ( mult = 0, sp = separators; sp && *sp; sp++ ) |
{ |
if ( *sp == '+' && *( sp + 1 ) == 0 ) |
mult = 1; |
else |
setsbit( seps, *sp ); |
} |
|
/* Break the line up into fields. */ |
for ( final_empty = 0, sp = ep = line, end = sp + linelen; |
sp < end && *sp; ) |
{ |
/* Collect everything that is not a separator. */ |
for ( ; *ep && !sbitset( seps, *ep ); ep++ ) |
; |
|
/* Resize the list if necessary. */ |
if ( list->used == list->size ) |
{ |
error = _bdf_list_ensure( list, list->used + 1 ); |
if ( error ) |
goto Exit; |
} |
|
/* Assign the field appropriately. */ |
list->field[list->used++] = ( ep > sp ) ? sp : (char*)empty; |
|
sp = ep; |
|
if ( mult ) |
{ |
/* If multiple separators should be collapsed, do it now by */ |
/* setting all the separator characters to 0. */ |
for ( ; *ep && sbitset( seps, *ep ); ep++ ) |
*ep = 0; |
} |
else if ( *ep != 0 ) |
/* Don't collapse multiple separators by making them 0, so just */ |
/* make the one encountered 0. */ |
*ep++ = 0; |
|
final_empty = ( ep > sp && *ep == 0 ); |
sp = ep; |
} |
|
/* Finally, NULL-terminate the list. */ |
if ( list->used + final_empty >= list->size ) |
{ |
error = _bdf_list_ensure( list, list->used + final_empty + 1 ); |
if ( error ) |
goto Exit; |
} |
|
if ( final_empty ) |
list->field[list->used++] = (char*)empty; |
|
list->field[list->used] = 0; |
|
Exit: |
return error; |
} |
|
|
#define NO_SKIP 256 /* this value cannot be stored in a 'char' */ |
|
|
static FT_Error |
_bdf_readstream( FT_Stream stream, |
_bdf_line_func_t callback, |
void* client_data, |
unsigned long *lno ) |
{ |
_bdf_line_func_t cb; |
unsigned long lineno, buf_size; |
int refill, hold, to_skip; |
ptrdiff_t bytes, start, end, cursor, avail; |
char* buf = 0; |
FT_Memory memory = stream->memory; |
FT_Error error = FT_Err_Ok; |
|
|
if ( callback == 0 ) |
{ |
error = FT_THROW( Invalid_Argument ); |
goto Exit; |
} |
|
/* initial size and allocation of the input buffer */ |
buf_size = 1024; |
|
if ( FT_NEW_ARRAY( buf, buf_size ) ) |
goto Exit; |
|
cb = callback; |
lineno = 1; |
buf[0] = 0; |
start = 0; |
end = 0; |
avail = 0; |
cursor = 0; |
refill = 1; |
to_skip = NO_SKIP; |
bytes = 0; /* make compiler happy */ |
|
for (;;) |
{ |
if ( refill ) |
{ |
bytes = (ptrdiff_t)FT_Stream_TryRead( |
stream, (FT_Byte*)buf + cursor, |
(FT_ULong)( buf_size - cursor ) ); |
avail = cursor + bytes; |
cursor = 0; |
refill = 0; |
} |
|
end = start; |
|
/* should we skip an optional character like \n or \r? */ |
if ( start < avail && buf[start] == to_skip ) |
{ |
start += 1; |
to_skip = NO_SKIP; |
continue; |
} |
|
/* try to find the end of the line */ |
while ( end < avail && buf[end] != '\n' && buf[end] != '\r' ) |
end++; |
|
/* if we hit the end of the buffer, try shifting its content */ |
/* or even resizing it */ |
if ( end >= avail ) |
{ |
if ( bytes == 0 ) /* last line in file doesn't end in \r or \n */ |
break; /* ignore it then exit */ |
|
if ( start == 0 ) |
{ |
/* this line is definitely too long; try resizing the input */ |
/* buffer a bit to handle it. */ |
FT_ULong new_size; |
|
|
if ( buf_size >= 65536UL ) /* limit ourselves to 64KByte */ |
{ |
FT_ERROR(( "_bdf_readstream: " ERRMSG6, lineno )); |
error = FT_THROW( Invalid_Argument ); |
goto Exit; |
} |
|
new_size = buf_size * 2; |
if ( FT_RENEW_ARRAY( buf, buf_size, new_size ) ) |
goto Exit; |
|
cursor = buf_size; |
buf_size = new_size; |
} |
else |
{ |
bytes = avail - start; |
|
FT_MEM_MOVE( buf, buf + start, bytes ); |
|
cursor = bytes; |
avail -= bytes; |
start = 0; |
} |
refill = 1; |
continue; |
} |
|
/* Temporarily NUL-terminate the line. */ |
hold = buf[end]; |
buf[end] = 0; |
|
/* XXX: Use encoding independent value for 0x1a */ |
if ( buf[start] != '#' && buf[start] != 0x1a && end > start ) |
{ |
error = (*cb)( buf + start, (unsigned long)( end - start ), lineno, |
(void*)&cb, client_data ); |
/* Redo if we have encountered CHARS without properties. */ |
if ( error == -1 ) |
error = (*cb)( buf + start, (unsigned long)( end - start ), lineno, |
(void*)&cb, client_data ); |
if ( error ) |
break; |
} |
|
lineno += 1; |
buf[end] = (char)hold; |
start = end + 1; |
|
if ( hold == '\n' ) |
to_skip = '\r'; |
else if ( hold == '\r' ) |
to_skip = '\n'; |
else |
to_skip = NO_SKIP; |
} |
|
*lno = lineno; |
|
Exit: |
FT_FREE( buf ); |
return error; |
} |
|
|
/* XXX: make this work with EBCDIC also */ |
|
static const unsigned char a2i[128] = |
{ |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
}; |
|
static const unsigned char odigits[32] = |
{ |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
}; |
|
static const unsigned char ddigits[32] = |
{ |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x03, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
}; |
|
static const unsigned char hdigits[32] = |
{ |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x03, |
0x7e, 0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
}; |
|
|
/* Routine to convert an ASCII string into an unsigned long integer. */ |
static unsigned long |
_bdf_atoul( char* s, |
char** end, |
int base ) |
{ |
unsigned long v; |
const unsigned char* dmap; |
|
|
if ( s == 0 || *s == 0 ) |
return 0; |
|
/* Make sure the radix is something recognizable. Default to 10. */ |
switch ( base ) |
{ |
case 8: |
dmap = odigits; |
break; |
case 16: |
dmap = hdigits; |
break; |
default: |
base = 10; |
dmap = ddigits; |
break; |
} |
|
/* Check for the special hex prefix. */ |
if ( *s == '0' && |
( *( s + 1 ) == 'x' || *( s + 1 ) == 'X' ) ) |
{ |
base = 16; |
dmap = hdigits; |
s += 2; |
} |
|
for ( v = 0; sbitset( dmap, *s ); s++ ) |
v = v * base + a2i[(int)*s]; |
|
if ( end != 0 ) |
*end = s; |
|
return v; |
} |
|
|
/* Routine to convert an ASCII string into an signed long integer. */ |
static long |
_bdf_atol( char* s, |
char** end, |
int base ) |
{ |
long v, neg; |
const unsigned char* dmap; |
|
|
if ( s == 0 || *s == 0 ) |
return 0; |
|
/* Make sure the radix is something recognizable. Default to 10. */ |
switch ( base ) |
{ |
case 8: |
dmap = odigits; |
break; |
case 16: |
dmap = hdigits; |
break; |
default: |
base = 10; |
dmap = ddigits; |
break; |
} |
|
/* Check for a minus sign. */ |
neg = 0; |
if ( *s == '-' ) |
{ |
s++; |
neg = 1; |
} |
|
/* Check for the special hex prefix. */ |
if ( *s == '0' && |
( *( s + 1 ) == 'x' || *( s + 1 ) == 'X' ) ) |
{ |
base = 16; |
dmap = hdigits; |
s += 2; |
} |
|
for ( v = 0; sbitset( dmap, *s ); s++ ) |
v = v * base + a2i[(int)*s]; |
|
if ( end != 0 ) |
*end = s; |
|
return ( !neg ) ? v : -v; |
} |
|
|
/* Routine to convert an ASCII string into an signed short integer. */ |
static short |
_bdf_atos( char* s, |
char** end, |
int base ) |
{ |
short v, neg; |
const unsigned char* dmap; |
|
|
if ( s == 0 || *s == 0 ) |
return 0; |
|
/* Make sure the radix is something recognizable. Default to 10. */ |
switch ( base ) |
{ |
case 8: |
dmap = odigits; |
break; |
case 16: |
dmap = hdigits; |
break; |
default: |
base = 10; |
dmap = ddigits; |
break; |
} |
|
/* Check for a minus. */ |
neg = 0; |
if ( *s == '-' ) |
{ |
s++; |
neg = 1; |
} |
|
/* Check for the special hex prefix. */ |
if ( *s == '0' && |
( *( s + 1 ) == 'x' || *( s + 1 ) == 'X' ) ) |
{ |
base = 16; |
dmap = hdigits; |
s += 2; |
} |
|
for ( v = 0; sbitset( dmap, *s ); s++ ) |
v = (short)( v * base + a2i[(int)*s] ); |
|
if ( end != 0 ) |
*end = s; |
|
return (short)( ( !neg ) ? v : -v ); |
} |
|
|
/* Routine to compare two glyphs by encoding so they can be sorted. */ |
static int |
by_encoding( const void* a, |
const void* b ) |
{ |
bdf_glyph_t *c1, *c2; |
|
|
c1 = (bdf_glyph_t *)a; |
c2 = (bdf_glyph_t *)b; |
|
if ( c1->encoding < c2->encoding ) |
return -1; |
|
if ( c1->encoding > c2->encoding ) |
return 1; |
|
return 0; |
} |
|
|
static FT_Error |
bdf_create_property( char* name, |
int format, |
bdf_font_t* font ) |
{ |
size_t n; |
bdf_property_t* p; |
FT_Memory memory = font->memory; |
FT_Error error = FT_Err_Ok; |
|
|
/* First check whether the property has */ |
/* already been added or not. If it has, then */ |
/* simply ignore it. */ |
if ( hash_lookup( name, &(font->proptbl) ) ) |
goto Exit; |
|
if ( FT_RENEW_ARRAY( font->user_props, |
font->nuser_props, |
font->nuser_props + 1 ) ) |
goto Exit; |
|
p = font->user_props + font->nuser_props; |
FT_ZERO( p ); |
|
n = ft_strlen( name ) + 1; |
if ( n > FT_ULONG_MAX ) |
return FT_THROW( Invalid_Argument ); |
|
if ( FT_NEW_ARRAY( p->name, n ) ) |
goto Exit; |
|
FT_MEM_COPY( (char *)p->name, name, n ); |
|
p->format = format; |
p->builtin = 0; |
|
n = _num_bdf_properties + font->nuser_props; |
|
error = hash_insert( p->name, n, &(font->proptbl), memory ); |
if ( error ) |
goto Exit; |
|
font->nuser_props++; |
|
Exit: |
return error; |
} |
|
|
FT_LOCAL_DEF( bdf_property_t * ) |
bdf_get_property( char* name, |
bdf_font_t* font ) |
{ |
hashnode hn; |
size_t propid; |
|
|
if ( name == 0 || *name == 0 ) |
return 0; |
|
if ( ( hn = hash_lookup( name, &(font->proptbl) ) ) == 0 ) |
return 0; |
|
propid = hn->data; |
if ( propid >= _num_bdf_properties ) |
return font->user_props + ( propid - _num_bdf_properties ); |
|
return (bdf_property_t*)_bdf_properties + propid; |
} |
|
|
/*************************************************************************/ |
/* */ |
/* BDF font file parsing flags and functions. */ |
/* */ |
/*************************************************************************/ |
|
|
/* Parse flags. */ |
|
#define _BDF_START 0x0001 |
#define _BDF_FONT_NAME 0x0002 |
#define _BDF_SIZE 0x0004 |
#define _BDF_FONT_BBX 0x0008 |
#define _BDF_PROPS 0x0010 |
#define _BDF_GLYPHS 0x0020 |
#define _BDF_GLYPH 0x0040 |
#define _BDF_ENCODING 0x0080 |
#define _BDF_SWIDTH 0x0100 |
#define _BDF_DWIDTH 0x0200 |
#define _BDF_BBX 0x0400 |
#define _BDF_BITMAP 0x0800 |
|
#define _BDF_SWIDTH_ADJ 0x1000 |
|
#define _BDF_GLYPH_BITS ( _BDF_GLYPH | \ |
_BDF_ENCODING | \ |
_BDF_SWIDTH | \ |
_BDF_DWIDTH | \ |
_BDF_BBX | \ |
_BDF_BITMAP ) |
|
#define _BDF_GLYPH_WIDTH_CHECK 0x40000000UL |
#define _BDF_GLYPH_HEIGHT_CHECK 0x80000000UL |
|
|
static FT_Error |
_bdf_add_comment( bdf_font_t* font, |
char* comment, |
unsigned long len ) |
{ |
char* cp; |
FT_Memory memory = font->memory; |
FT_Error error = FT_Err_Ok; |
|
|
if ( FT_RENEW_ARRAY( font->comments, |
font->comments_len, |
font->comments_len + len + 1 ) ) |
goto Exit; |
|
cp = font->comments + font->comments_len; |
|
FT_MEM_COPY( cp, comment, len ); |
cp[len] = '\n'; |
|
font->comments_len += len + 1; |
|
Exit: |
return error; |
} |
|
|
/* Set the spacing from the font name if it exists, or set it to the */ |
/* default specified in the options. */ |
static FT_Error |
_bdf_set_default_spacing( bdf_font_t* font, |
bdf_options_t* opts, |
unsigned long lineno ) |
{ |
size_t len; |
char name[256]; |
_bdf_list_t list; |
FT_Memory memory; |
FT_Error error = FT_Err_Ok; |
|
FT_UNUSED( lineno ); /* only used in debug mode */ |
|
|
if ( font == 0 || font->name == 0 || font->name[0] == 0 ) |
{ |
error = FT_THROW( Invalid_Argument ); |
goto Exit; |
} |
|
memory = font->memory; |
|
_bdf_list_init( &list, memory ); |
|
font->spacing = opts->font_spacing; |
|
len = ft_strlen( font->name ) + 1; |
/* Limit ourselves to 256 characters in the font name. */ |
if ( len >= 256 ) |
{ |
FT_ERROR(( "_bdf_set_default_spacing: " ERRMSG7, lineno )); |
error = FT_THROW( Invalid_Argument ); |
goto Exit; |
} |
|
FT_MEM_COPY( name, font->name, len ); |
|
error = _bdf_list_split( &list, (char *)"-", name, (unsigned long)len ); |
if ( error ) |
goto Fail; |
|
if ( list.used == 15 ) |
{ |
switch ( list.field[11][0] ) |
{ |
case 'C': |
case 'c': |
font->spacing = BDF_CHARCELL; |
break; |
case 'M': |
case 'm': |
font->spacing = BDF_MONOWIDTH; |
break; |
case 'P': |
case 'p': |
font->spacing = BDF_PROPORTIONAL; |
break; |
} |
} |
|
Fail: |
_bdf_list_done( &list ); |
|
Exit: |
return error; |
} |
|
|
/* Determine whether the property is an atom or not. If it is, then */ |
/* clean it up so the double quotes are removed if they exist. */ |
static int |
_bdf_is_atom( char* line, |
unsigned long linelen, |
char** name, |
char** value, |
bdf_font_t* font ) |
{ |
int hold; |
char *sp, *ep; |
bdf_property_t* p; |
|
|
*name = sp = ep = line; |
|
while ( *ep && *ep != ' ' && *ep != '\t' ) |
ep++; |
|
hold = -1; |
if ( *ep ) |
{ |
hold = *ep; |
*ep = 0; |
} |
|
p = bdf_get_property( sp, font ); |
|
/* Restore the character that was saved before any return can happen. */ |
if ( hold != -1 ) |
*ep = (char)hold; |
|
/* If the property exists and is not an atom, just return here. */ |
if ( p && p->format != BDF_ATOM ) |
return 0; |
|
/* The property is an atom. Trim all leading and trailing whitespace */ |
/* and double quotes for the atom value. */ |
sp = ep; |
ep = line + linelen; |
|
/* Trim the leading whitespace if it exists. */ |
if ( *sp ) |
*sp++ = 0; |
while ( *sp && |
( *sp == ' ' || *sp == '\t' ) ) |
sp++; |
|
/* Trim the leading double quote if it exists. */ |
if ( *sp == '"' ) |
sp++; |
*value = sp; |
|
/* Trim the trailing whitespace if it exists. */ |
while ( ep > sp && |
( *( ep - 1 ) == ' ' || *( ep - 1 ) == '\t' ) ) |
*--ep = 0; |
|
/* Trim the trailing double quote if it exists. */ |
if ( ep > sp && *( ep - 1 ) == '"' ) |
*--ep = 0; |
|
return 1; |
} |
|
|
static FT_Error |
_bdf_add_property( bdf_font_t* font, |
char* name, |
char* value, |
unsigned long lineno ) |
{ |
size_t propid; |
hashnode hn; |
bdf_property_t *prop, *fp; |
FT_Memory memory = font->memory; |
FT_Error error = FT_Err_Ok; |
|
FT_UNUSED( lineno ); /* only used in debug mode */ |
|
|
/* First, check whether the property already exists in the font. */ |
if ( ( hn = hash_lookup( name, (hashtable *)font->internal ) ) != 0 ) |
{ |
/* The property already exists in the font, so simply replace */ |
/* the value of the property with the current value. */ |
fp = font->props + hn->data; |
|
switch ( fp->format ) |
{ |
case BDF_ATOM: |
/* Delete the current atom if it exists. */ |
FT_FREE( fp->value.atom ); |
|
if ( value && value[0] != 0 ) |
{ |
if ( FT_STRDUP( fp->value.atom, value ) ) |
goto Exit; |
} |
break; |
|
case BDF_INTEGER: |
fp->value.l = _bdf_atol( value, 0, 10 ); |
break; |
|
case BDF_CARDINAL: |
fp->value.ul = _bdf_atoul( value, 0, 10 ); |
break; |
|
default: |
; |
} |
|
goto Exit; |
} |
|
/* See whether this property type exists yet or not. */ |
/* If not, create it. */ |
hn = hash_lookup( name, &(font->proptbl) ); |
if ( hn == 0 ) |
{ |
error = bdf_create_property( name, BDF_ATOM, font ); |
if ( error ) |
goto Exit; |
hn = hash_lookup( name, &(font->proptbl) ); |
} |
|
/* Allocate another property if this is overflow. */ |
if ( font->props_used == font->props_size ) |
{ |
if ( font->props_size == 0 ) |
{ |
if ( FT_NEW_ARRAY( font->props, 1 ) ) |
goto Exit; |
} |
else |
{ |
if ( FT_RENEW_ARRAY( font->props, |
font->props_size, |
font->props_size + 1 ) ) |
goto Exit; |
} |
|
fp = font->props + font->props_size; |
FT_MEM_ZERO( fp, sizeof ( bdf_property_t ) ); |
font->props_size++; |
} |
|
propid = hn->data; |
if ( propid >= _num_bdf_properties ) |
prop = font->user_props + ( propid - _num_bdf_properties ); |
else |
prop = (bdf_property_t*)_bdf_properties + propid; |
|
fp = font->props + font->props_used; |
|
fp->name = prop->name; |
fp->format = prop->format; |
fp->builtin = prop->builtin; |
|
switch ( prop->format ) |
{ |
case BDF_ATOM: |
fp->value.atom = 0; |
if ( value != 0 && value[0] ) |
{ |
if ( FT_STRDUP( fp->value.atom, value ) ) |
goto Exit; |
} |
break; |
|
case BDF_INTEGER: |
fp->value.l = _bdf_atol( value, 0, 10 ); |
break; |
|
case BDF_CARDINAL: |
fp->value.ul = _bdf_atoul( value, 0, 10 ); |
break; |
} |
|
/* If the property happens to be a comment, then it doesn't need */ |
/* to be added to the internal hash table. */ |
if ( ft_memcmp( name, "COMMENT", 7 ) != 0 ) |
{ |
/* Add the property to the font property table. */ |
error = hash_insert( fp->name, |
font->props_used, |
(hashtable *)font->internal, |
memory ); |
if ( error ) |
goto Exit; |
} |
|
font->props_used++; |
|
/* Some special cases need to be handled here. The DEFAULT_CHAR */ |
/* property needs to be located if it exists in the property list, the */ |
/* FONT_ASCENT and FONT_DESCENT need to be assigned if they are */ |
/* present, and the SPACING property should override the default */ |
/* spacing. */ |
if ( ft_memcmp( name, "DEFAULT_CHAR", 12 ) == 0 ) |
font->default_char = fp->value.l; |
else if ( ft_memcmp( name, "FONT_ASCENT", 11 ) == 0 ) |
font->font_ascent = fp->value.l; |
else if ( ft_memcmp( name, "FONT_DESCENT", 12 ) == 0 ) |
font->font_descent = fp->value.l; |
else if ( ft_memcmp( name, "SPACING", 7 ) == 0 ) |
{ |
if ( !fp->value.atom ) |
{ |
FT_ERROR(( "_bdf_add_property: " ERRMSG8, lineno, "SPACING" )); |
error = FT_THROW( Invalid_File_Format ); |
goto Exit; |
} |
|
if ( fp->value.atom[0] == 'p' || fp->value.atom[0] == 'P' ) |
font->spacing = BDF_PROPORTIONAL; |
else if ( fp->value.atom[0] == 'm' || fp->value.atom[0] == 'M' ) |
font->spacing = BDF_MONOWIDTH; |
else if ( fp->value.atom[0] == 'c' || fp->value.atom[0] == 'C' ) |
font->spacing = BDF_CHARCELL; |
} |
|
Exit: |
return error; |
} |
|
|
static const unsigned char nibble_mask[8] = |
{ |
0xFF, 0x80, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFE |
}; |
|
|
/* Actually parse the glyph info and bitmaps. */ |
static FT_Error |
_bdf_parse_glyphs( char* line, |
unsigned long linelen, |
unsigned long lineno, |
void* call_data, |
void* client_data ) |
{ |
int c, mask_index; |
char* s; |
unsigned char* bp; |
unsigned long i, slen, nibbles; |
|
_bdf_parse_t* p; |
bdf_glyph_t* glyph; |
bdf_font_t* font; |
|
FT_Memory memory; |
FT_Error error = FT_Err_Ok; |
|
FT_UNUSED( call_data ); |
FT_UNUSED( lineno ); /* only used in debug mode */ |
|
|
p = (_bdf_parse_t *)client_data; |
|
font = p->font; |
memory = font->memory; |
|
/* Check for a comment. */ |
if ( ft_memcmp( line, "COMMENT", 7 ) == 0 ) |
{ |
linelen -= 7; |
|
s = line + 7; |
if ( *s != 0 ) |
{ |
s++; |
linelen--; |
} |
error = _bdf_add_comment( p->font, s, linelen ); |
goto Exit; |
} |
|
/* The very first thing expected is the number of glyphs. */ |
if ( !( p->flags & _BDF_GLYPHS ) ) |
{ |
if ( ft_memcmp( line, "CHARS", 5 ) != 0 ) |
{ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG1, lineno, "CHARS" )); |
error = FT_THROW( Missing_Chars_Field ); |
goto Exit; |
} |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
p->cnt = font->glyphs_size = _bdf_atoul( p->list.field[1], 0, 10 ); |
|
/* Make sure the number of glyphs is non-zero. */ |
if ( p->cnt == 0 ) |
font->glyphs_size = 64; |
|
/* Limit ourselves to 1,114,112 glyphs in the font (this is the */ |
/* number of code points available in Unicode). */ |
if ( p->cnt >= 0x110000UL ) |
{ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG5, lineno, "CHARS" )); |
error = FT_THROW( Invalid_Argument ); |
goto Exit; |
} |
|
if ( FT_NEW_ARRAY( font->glyphs, font->glyphs_size ) ) |
goto Exit; |
|
p->flags |= _BDF_GLYPHS; |
|
goto Exit; |
} |
|
/* Check for the ENDFONT field. */ |
if ( ft_memcmp( line, "ENDFONT", 7 ) == 0 ) |
{ |
/* Sort the glyphs by encoding. */ |
ft_qsort( (char *)font->glyphs, |
font->glyphs_used, |
sizeof ( bdf_glyph_t ), |
by_encoding ); |
|
p->flags &= ~_BDF_START; |
|
goto Exit; |
} |
|
/* Check for the ENDCHAR field. */ |
if ( ft_memcmp( line, "ENDCHAR", 7 ) == 0 ) |
{ |
p->glyph_enc = 0; |
p->flags &= ~_BDF_GLYPH_BITS; |
|
goto Exit; |
} |
|
/* Check whether a glyph is being scanned but should be */ |
/* ignored because it is an unencoded glyph. */ |
if ( ( p->flags & _BDF_GLYPH ) && |
p->glyph_enc == -1 && |
p->opts->keep_unencoded == 0 ) |
goto Exit; |
|
/* Check for the STARTCHAR field. */ |
if ( ft_memcmp( line, "STARTCHAR", 9 ) == 0 ) |
{ |
/* Set the character name in the parse info first until the */ |
/* encoding can be checked for an unencoded character. */ |
FT_FREE( p->glyph_name ); |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
_bdf_list_shift( &p->list, 1 ); |
|
s = _bdf_list_join( &p->list, ' ', &slen ); |
|
if ( !s ) |
{ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG8, lineno, "STARTCHAR" )); |
error = FT_THROW( Invalid_File_Format ); |
goto Exit; |
} |
|
if ( FT_NEW_ARRAY( p->glyph_name, slen + 1 ) ) |
goto Exit; |
|
FT_MEM_COPY( p->glyph_name, s, slen + 1 ); |
|
p->flags |= _BDF_GLYPH; |
|
FT_TRACE4(( DBGMSG1, lineno, s )); |
|
goto Exit; |
} |
|
/* Check for the ENCODING field. */ |
if ( ft_memcmp( line, "ENCODING", 8 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_GLYPH ) ) |
{ |
/* Missing STARTCHAR field. */ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG1, lineno, "STARTCHAR" )); |
error = FT_THROW( Missing_Startchar_Field ); |
goto Exit; |
} |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
p->glyph_enc = _bdf_atol( p->list.field[1], 0, 10 ); |
|
/* Normalize negative encoding values. The specification only */ |
/* allows -1, but we can be more generous here. */ |
if ( p->glyph_enc < -1 ) |
p->glyph_enc = -1; |
|
/* Check for alternative encoding format. */ |
if ( p->glyph_enc == -1 && p->list.used > 2 ) |
p->glyph_enc = _bdf_atol( p->list.field[2], 0, 10 ); |
|
if ( p->glyph_enc < -1 ) |
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; |
font->modified = 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 */ |
/* number of characters happen to be wrong. */ |
if ( font->glyphs_used == font->glyphs_size ) |
{ |
if ( FT_RENEW_ARRAY( font->glyphs, |
font->glyphs_size, |
font->glyphs_size + 64 ) ) |
goto Exit; |
|
font->glyphs_size += 64; |
} |
|
glyph = font->glyphs + font->glyphs_used++; |
glyph->name = p->glyph_name; |
glyph->encoding = p->glyph_enc; |
|
/* Reset the initial glyph info. */ |
p->glyph_name = 0; |
} |
else |
{ |
/* Unencoded glyph. Check whether it should */ |
/* be added or not. */ |
if ( p->opts->keep_unencoded != 0 ) |
{ |
/* Allocate the next unencoded glyph. */ |
if ( font->unencoded_used == font->unencoded_size ) |
{ |
if ( FT_RENEW_ARRAY( font->unencoded , |
font->unencoded_size, |
font->unencoded_size + 4 ) ) |
goto Exit; |
|
font->unencoded_size += 4; |
} |
|
glyph = font->unencoded + font->unencoded_used; |
glyph->name = p->glyph_name; |
glyph->encoding = font->unencoded_used++; |
} |
else |
/* Free up the glyph name if the unencoded shouldn't be */ |
/* kept. */ |
FT_FREE( p->glyph_name ); |
|
p->glyph_name = 0; |
} |
|
/* Clear the flags that might be added when width and height are */ |
/* checked for consistency. */ |
p->flags &= ~( _BDF_GLYPH_WIDTH_CHECK | _BDF_GLYPH_HEIGHT_CHECK ); |
|
p->flags |= _BDF_ENCODING; |
|
goto Exit; |
} |
|
/* Point at the glyph being constructed. */ |
if ( p->glyph_enc == -1 ) |
glyph = font->unencoded + ( font->unencoded_used - 1 ); |
else |
glyph = font->glyphs + ( font->glyphs_used - 1 ); |
|
/* Check whether a bitmap is being constructed. */ |
if ( p->flags & _BDF_BITMAP ) |
{ |
/* If there are more rows than are specified in the glyph metrics, */ |
/* ignore the remaining lines. */ |
if ( p->row >= (unsigned long)glyph->bbx.height ) |
{ |
if ( !( p->flags & _BDF_GLYPH_HEIGHT_CHECK ) ) |
{ |
FT_TRACE2(( "_bdf_parse_glyphs: " ACMSG13, glyph->encoding )); |
p->flags |= _BDF_GLYPH_HEIGHT_CHECK; |
font->modified = 1; |
} |
|
goto Exit; |
} |
|
/* Only collect the number of nibbles indicated by the glyph */ |
/* metrics. If there are more columns, they are simply ignored. */ |
nibbles = glyph->bpr << 1; |
bp = glyph->bitmap + p->row * glyph->bpr; |
|
for ( i = 0; i < nibbles; i++ ) |
{ |
c = line[i]; |
if ( !sbitset( hdigits, c ) ) |
break; |
*bp = (FT_Byte)( ( *bp << 4 ) + a2i[c] ); |
if ( i + 1 < nibbles && ( i & 1 ) ) |
*++bp = 0; |
} |
|
/* If any line has not enough columns, */ |
/* indicate they have been padded with zero bits. */ |
if ( i < nibbles && |
!( p->flags & _BDF_GLYPH_WIDTH_CHECK ) ) |
{ |
FT_TRACE2(( "_bdf_parse_glyphs: " ACMSG16, glyph->encoding )); |
p->flags |= _BDF_GLYPH_WIDTH_CHECK; |
font->modified = 1; |
} |
|
/* Remove possible garbage at the right. */ |
mask_index = ( glyph->bbx.width * p->font->bpp ) & 7; |
if ( glyph->bbx.width ) |
*bp &= nibble_mask[mask_index]; |
|
/* If any line has extra columns, indicate they have been removed. */ |
if ( i == nibbles && |
sbitset( hdigits, line[nibbles] ) && |
!( p->flags & _BDF_GLYPH_WIDTH_CHECK ) ) |
{ |
FT_TRACE2(( "_bdf_parse_glyphs: " ACMSG14, glyph->encoding )); |
p->flags |= _BDF_GLYPH_WIDTH_CHECK; |
font->modified = 1; |
} |
|
p->row++; |
goto Exit; |
} |
|
/* Expect the SWIDTH (scalable width) field next. */ |
if ( ft_memcmp( line, "SWIDTH", 6 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_ENCODING ) ) |
goto Missing_Encoding; |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
glyph->swidth = (unsigned short)_bdf_atoul( p->list.field[1], 0, 10 ); |
p->flags |= _BDF_SWIDTH; |
|
goto Exit; |
} |
|
/* Expect the DWIDTH (scalable width) field next. */ |
if ( ft_memcmp( line, "DWIDTH", 6 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_ENCODING ) ) |
goto Missing_Encoding; |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
glyph->dwidth = (unsigned short)_bdf_atoul( p->list.field[1], 0, 10 ); |
|
if ( !( p->flags & _BDF_SWIDTH ) ) |
{ |
/* Missing SWIDTH field. Emit an auto correction message and set */ |
/* the scalable width from the device width. */ |
FT_TRACE2(( "_bdf_parse_glyphs: " ACMSG9, lineno )); |
|
glyph->swidth = (unsigned short)FT_MulDiv( |
glyph->dwidth, 72000L, |
(FT_Long)( font->point_size * |
font->resolution_x ) ); |
} |
|
p->flags |= _BDF_DWIDTH; |
goto Exit; |
} |
|
/* Expect the BBX field next. */ |
if ( ft_memcmp( line, "BBX", 3 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_ENCODING ) ) |
goto Missing_Encoding; |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
glyph->bbx.width = _bdf_atos( p->list.field[1], 0, 10 ); |
glyph->bbx.height = _bdf_atos( p->list.field[2], 0, 10 ); |
glyph->bbx.x_offset = _bdf_atos( p->list.field[3], 0, 10 ); |
glyph->bbx.y_offset = _bdf_atos( p->list.field[4], 0, 10 ); |
|
/* Generate the ascent and descent of the character. */ |
glyph->bbx.ascent = (short)( glyph->bbx.height + glyph->bbx.y_offset ); |
glyph->bbx.descent = (short)( -glyph->bbx.y_offset ); |
|
/* Determine the overall font bounding box as the characters are */ |
/* loaded so corrections can be done later if indicated. */ |
p->maxas = (short)FT_MAX( glyph->bbx.ascent, p->maxas ); |
p->maxds = (short)FT_MAX( glyph->bbx.descent, p->maxds ); |
|
p->rbearing = (short)( glyph->bbx.width + glyph->bbx.x_offset ); |
|
p->maxrb = (short)FT_MAX( p->rbearing, p->maxrb ); |
p->minlb = (short)FT_MIN( glyph->bbx.x_offset, p->minlb ); |
p->maxlb = (short)FT_MAX( glyph->bbx.x_offset, p->maxlb ); |
|
if ( !( p->flags & _BDF_DWIDTH ) ) |
{ |
/* Missing DWIDTH field. Emit an auto correction message and set */ |
/* the device width to the glyph width. */ |
FT_TRACE2(( "_bdf_parse_glyphs: " ACMSG10, lineno )); |
glyph->dwidth = glyph->bbx.width; |
} |
|
/* If the BDF_CORRECT_METRICS flag is set, then adjust the SWIDTH */ |
/* value if necessary. */ |
if ( p->opts->correct_metrics != 0 ) |
{ |
/* Determine the point size of the glyph. */ |
unsigned short sw = (unsigned short)FT_MulDiv( |
glyph->dwidth, 72000L, |
(FT_Long)( font->point_size * |
font->resolution_x ) ); |
|
|
if ( sw != glyph->swidth ) |
{ |
glyph->swidth = sw; |
|
if ( p->glyph_enc == -1 ) |
_bdf_set_glyph_modified( font->umod, |
font->unencoded_used - 1 ); |
else |
_bdf_set_glyph_modified( font->nmod, glyph->encoding ); |
|
p->flags |= _BDF_SWIDTH_ADJ; |
font->modified = 1; |
} |
} |
|
p->flags |= _BDF_BBX; |
goto Exit; |
} |
|
/* And finally, gather up the bitmap. */ |
if ( ft_memcmp( line, "BITMAP", 6 ) == 0 ) |
{ |
unsigned long bitmap_size; |
|
|
if ( !( p->flags & _BDF_BBX ) ) |
{ |
/* Missing BBX field. */ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG1, lineno, "BBX" )); |
error = FT_THROW( Missing_Bbx_Field ); |
goto Exit; |
} |
|
/* Allocate enough space for the bitmap. */ |
glyph->bpr = ( glyph->bbx.width * p->font->bpp + 7 ) >> 3; |
|
bitmap_size = glyph->bpr * glyph->bbx.height; |
if ( glyph->bpr > 0xFFFFU || bitmap_size > 0xFFFFU ) |
{ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG4, lineno )); |
error = FT_THROW( Bbx_Too_Big ); |
goto Exit; |
} |
else |
glyph->bytes = (unsigned short)bitmap_size; |
|
if ( FT_NEW_ARRAY( glyph->bitmap, glyph->bytes ) ) |
goto Exit; |
|
p->row = 0; |
p->flags |= _BDF_BITMAP; |
|
goto Exit; |
} |
|
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG9, lineno )); |
error = FT_THROW( Invalid_File_Format ); |
goto Exit; |
|
Missing_Encoding: |
/* Missing ENCODING field. */ |
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG1, lineno, "ENCODING" )); |
error = FT_THROW( Missing_Encoding_Field ); |
|
Exit: |
if ( error && ( p->flags & _BDF_GLYPH ) ) |
FT_FREE( p->glyph_name ); |
|
return error; |
} |
|
|
/* Load the font properties. */ |
static FT_Error |
_bdf_parse_properties( char* line, |
unsigned long linelen, |
unsigned long lineno, |
void* call_data, |
void* client_data ) |
{ |
unsigned long vlen; |
_bdf_line_func_t* next; |
_bdf_parse_t* p; |
char* name; |
char* value; |
char nbuf[128]; |
FT_Error error = FT_Err_Ok; |
|
FT_UNUSED( lineno ); |
|
|
next = (_bdf_line_func_t *)call_data; |
p = (_bdf_parse_t *) client_data; |
|
/* Check for the end of the properties. */ |
if ( ft_memcmp( line, "ENDPROPERTIES", 13 ) == 0 ) |
{ |
/* If the FONT_ASCENT or FONT_DESCENT properties have not been */ |
/* encountered yet, then make sure they are added as properties and */ |
/* make sure they are set from the font bounding box info. */ |
/* */ |
/* This is *always* done regardless of the options, because X11 */ |
/* requires these two fields to compile fonts. */ |
if ( bdf_get_font_property( p->font, "FONT_ASCENT" ) == 0 ) |
{ |
p->font->font_ascent = p->font->bbx.ascent; |
ft_sprintf( nbuf, "%hd", p->font->bbx.ascent ); |
error = _bdf_add_property( p->font, (char *)"FONT_ASCENT", |
nbuf, lineno ); |
if ( error ) |
goto Exit; |
|
FT_TRACE2(( "_bdf_parse_properties: " ACMSG1, p->font->bbx.ascent )); |
p->font->modified = 1; |
} |
|
if ( bdf_get_font_property( p->font, "FONT_DESCENT" ) == 0 ) |
{ |
p->font->font_descent = p->font->bbx.descent; |
ft_sprintf( nbuf, "%hd", p->font->bbx.descent ); |
error = _bdf_add_property( p->font, (char *)"FONT_DESCENT", |
nbuf, lineno ); |
if ( error ) |
goto Exit; |
|
FT_TRACE2(( "_bdf_parse_properties: " ACMSG2, p->font->bbx.descent )); |
p->font->modified = 1; |
} |
|
p->flags &= ~_BDF_PROPS; |
*next = _bdf_parse_glyphs; |
|
goto Exit; |
} |
|
/* Ignore the _XFREE86_GLYPH_RANGES properties. */ |
if ( ft_memcmp( line, "_XFREE86_GLYPH_RANGES", 21 ) == 0 ) |
goto Exit; |
|
/* Handle COMMENT fields and properties in a special way to preserve */ |
/* the spacing. */ |
if ( ft_memcmp( line, "COMMENT", 7 ) == 0 ) |
{ |
name = value = line; |
value += 7; |
if ( *value ) |
*value++ = 0; |
error = _bdf_add_property( p->font, name, value, lineno ); |
if ( error ) |
goto Exit; |
} |
else if ( _bdf_is_atom( line, linelen, &name, &value, p->font ) ) |
{ |
error = _bdf_add_property( p->font, name, value, lineno ); |
if ( error ) |
goto Exit; |
} |
else |
{ |
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
name = p->list.field[0]; |
|
_bdf_list_shift( &p->list, 1 ); |
value = _bdf_list_join( &p->list, ' ', &vlen ); |
|
error = _bdf_add_property( p->font, name, value, lineno ); |
if ( error ) |
goto Exit; |
} |
|
Exit: |
return error; |
} |
|
|
/* Load the font header. */ |
static FT_Error |
_bdf_parse_start( char* line, |
unsigned long linelen, |
unsigned long lineno, |
void* call_data, |
void* client_data ) |
{ |
unsigned long slen; |
_bdf_line_func_t* next; |
_bdf_parse_t* p; |
bdf_font_t* font; |
char *s; |
|
FT_Memory memory = NULL; |
FT_Error error = FT_Err_Ok; |
|
FT_UNUSED( lineno ); /* only used in debug mode */ |
|
|
next = (_bdf_line_func_t *)call_data; |
p = (_bdf_parse_t *) client_data; |
|
if ( p->font ) |
memory = p->font->memory; |
|
/* Check for a comment. This is done to handle those fonts that have */ |
/* comments before the STARTFONT line for some reason. */ |
if ( ft_memcmp( line, "COMMENT", 7 ) == 0 ) |
{ |
if ( p->opts->keep_comments != 0 && p->font != 0 ) |
{ |
linelen -= 7; |
|
s = line + 7; |
if ( *s != 0 ) |
{ |
s++; |
linelen--; |
} |
|
error = _bdf_add_comment( p->font, s, linelen ); |
if ( error ) |
goto Exit; |
/* here font is not defined! */ |
} |
|
goto Exit; |
} |
|
if ( !( p->flags & _BDF_START ) ) |
{ |
memory = p->memory; |
|
if ( ft_memcmp( line, "STARTFONT", 9 ) != 0 ) |
{ |
/* we don't emit an error message since this code gets */ |
/* explicitly caught one level higher */ |
error = FT_THROW( Missing_Startfont_Field ); |
goto Exit; |
} |
|
p->flags = _BDF_START; |
font = p->font = 0; |
|
if ( FT_NEW( font ) ) |
goto Exit; |
p->font = font; |
|
font->memory = p->memory; |
p->memory = 0; |
|
{ /* setup */ |
size_t i; |
bdf_property_t* prop; |
|
|
error = hash_init( &(font->proptbl), memory ); |
if ( error ) |
goto Exit; |
for ( i = 0, prop = (bdf_property_t*)_bdf_properties; |
i < _num_bdf_properties; i++, prop++ ) |
{ |
error = hash_insert( prop->name, i, |
&(font->proptbl), memory ); |
if ( error ) |
goto Exit; |
} |
} |
|
if ( FT_ALLOC( p->font->internal, sizeof ( hashtable ) ) ) |
goto Exit; |
error = hash_init( (hashtable *)p->font->internal,memory ); |
if ( error ) |
goto Exit; |
p->font->spacing = p->opts->font_spacing; |
p->font->default_char = -1; |
|
goto Exit; |
} |
|
/* Check for the start of the properties. */ |
if ( ft_memcmp( line, "STARTPROPERTIES", 15 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_FONT_BBX ) ) |
{ |
/* Missing the FONTBOUNDINGBOX field. */ |
FT_ERROR(( "_bdf_parse_start: " ERRMSG1, lineno, "FONTBOUNDINGBOX" )); |
error = FT_THROW( Missing_Fontboundingbox_Field ); |
goto Exit; |
} |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
/* at this point, `p->font' can't be NULL */ |
p->cnt = p->font->props_size = _bdf_atoul( p->list.field[1], 0, 10 ); |
|
if ( FT_NEW_ARRAY( p->font->props, p->cnt ) ) |
{ |
p->font->props_size = 0; |
goto Exit; |
} |
|
p->flags |= _BDF_PROPS; |
*next = _bdf_parse_properties; |
|
goto Exit; |
} |
|
/* Check for the FONTBOUNDINGBOX field. */ |
if ( ft_memcmp( line, "FONTBOUNDINGBOX", 15 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_SIZE ) ) |
{ |
/* Missing the SIZE field. */ |
FT_ERROR(( "_bdf_parse_start: " ERRMSG1, lineno, "SIZE" )); |
error = FT_THROW( Missing_Size_Field ); |
goto Exit; |
} |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
p->font->bbx.width = _bdf_atos( p->list.field[1], 0, 10 ); |
p->font->bbx.height = _bdf_atos( p->list.field[2], 0, 10 ); |
|
p->font->bbx.x_offset = _bdf_atos( p->list.field[3], 0, 10 ); |
p->font->bbx.y_offset = _bdf_atos( p->list.field[4], 0, 10 ); |
|
p->font->bbx.ascent = (short)( p->font->bbx.height + |
p->font->bbx.y_offset ); |
|
p->font->bbx.descent = (short)( -p->font->bbx.y_offset ); |
|
p->flags |= _BDF_FONT_BBX; |
|
goto Exit; |
} |
|
/* The next thing to check for is the FONT field. */ |
if ( ft_memcmp( line, "FONT", 4 ) == 0 ) |
{ |
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
_bdf_list_shift( &p->list, 1 ); |
|
s = _bdf_list_join( &p->list, ' ', &slen ); |
|
if ( !s ) |
{ |
FT_ERROR(( "_bdf_parse_start: " ERRMSG8, lineno, "FONT" )); |
error = FT_THROW( Invalid_File_Format ); |
goto Exit; |
} |
|
/* Allowing multiple `FONT' lines (which is invalid) doesn't hurt... */ |
FT_FREE( p->font->name ); |
|
if ( FT_NEW_ARRAY( p->font->name, slen + 1 ) ) |
goto Exit; |
FT_MEM_COPY( p->font->name, s, slen + 1 ); |
|
/* If the font name is an XLFD name, set the spacing to the one in */ |
/* the font name. If there is no spacing fall back on the default. */ |
error = _bdf_set_default_spacing( p->font, p->opts, lineno ); |
if ( error ) |
goto Exit; |
|
p->flags |= _BDF_FONT_NAME; |
|
goto Exit; |
} |
|
/* Check for the SIZE field. */ |
if ( ft_memcmp( line, "SIZE", 4 ) == 0 ) |
{ |
if ( !( p->flags & _BDF_FONT_NAME ) ) |
{ |
/* Missing the FONT field. */ |
FT_ERROR(( "_bdf_parse_start: " ERRMSG1, lineno, "FONT" )); |
error = FT_THROW( Missing_Font_Field ); |
goto Exit; |
} |
|
error = _bdf_list_split( &p->list, (char *)" +", line, linelen ); |
if ( error ) |
goto Exit; |
|
p->font->point_size = _bdf_atoul( p->list.field[1], 0, 10 ); |
p->font->resolution_x = _bdf_atoul( p->list.field[2], 0, 10 ); |
p->font->resolution_y = _bdf_atoul( p->list.field[3], 0, 10 ); |
|
/* Check for the bits per pixel field. */ |
if ( p->list.used == 5 ) |
{ |
unsigned short bitcount, i, shift; |
|
|
p->font->bpp = (unsigned short)_bdf_atos( p->list.field[4], 0, 10 ); |
|
/* Only values 1, 2, 4, 8 are allowed. */ |
shift = p->font->bpp; |
bitcount = 0; |
for ( i = 0; shift > 0; i++ ) |
{ |
if ( shift & 1 ) |
bitcount = i; |
shift >>= 1; |
} |
|
shift = (short)( ( bitcount > 3 ) ? 8 : ( 1 << bitcount ) ); |
|
if ( p->font->bpp > shift || p->font->bpp != shift ) |
{ |
/* select next higher value */ |
p->font->bpp = (unsigned short)( shift << 1 ); |
FT_TRACE2(( "_bdf_parse_start: " ACMSG11, p->font->bpp )); |
} |
} |
else |
p->font->bpp = 1; |
|
p->flags |= _BDF_SIZE; |
|
goto Exit; |
} |
|
/* Check for the CHARS field -- font properties are optional */ |
if ( ft_memcmp( line, "CHARS", 5 ) == 0 ) |
{ |
char nbuf[128]; |
|
|
if ( !( p->flags & _BDF_FONT_BBX ) ) |
{ |
/* Missing the FONTBOUNDINGBOX field. */ |
FT_ERROR(( "_bdf_parse_start: " ERRMSG1, lineno, "FONTBOUNDINGBOX" )); |
error = FT_THROW( Missing_Fontboundingbox_Field ); |
goto Exit; |
} |
|
/* Add the two standard X11 properties which are required */ |
/* for compiling fonts. */ |
p->font->font_ascent = p->font->bbx.ascent; |
ft_sprintf( nbuf, "%hd", p->font->bbx.ascent ); |
error = _bdf_add_property( p->font, (char *)"FONT_ASCENT", |
nbuf, lineno ); |
if ( error ) |
goto Exit; |
FT_TRACE2(( "_bdf_parse_properties: " ACMSG1, p->font->bbx.ascent )); |
|
p->font->font_descent = p->font->bbx.descent; |
ft_sprintf( nbuf, "%hd", p->font->bbx.descent ); |
error = _bdf_add_property( p->font, (char *)"FONT_DESCENT", |
nbuf, lineno ); |
if ( error ) |
goto Exit; |
FT_TRACE2(( "_bdf_parse_properties: " ACMSG2, p->font->bbx.descent )); |
|
p->font->modified = 1; |
|
*next = _bdf_parse_glyphs; |
|
/* A special return value. */ |
error = -1; |
goto Exit; |
} |
|
FT_ERROR(( "_bdf_parse_start: " ERRMSG9, lineno )); |
error = FT_THROW( Invalid_File_Format ); |
|
Exit: |
return error; |
} |
|
|
/*************************************************************************/ |
/* */ |
/* API. */ |
/* */ |
/*************************************************************************/ |
|
|
FT_LOCAL_DEF( FT_Error ) |
bdf_load_font( FT_Stream stream, |
FT_Memory extmemory, |
bdf_options_t* opts, |
bdf_font_t* *font ) |
{ |
unsigned long lineno = 0; /* make compiler happy */ |
_bdf_parse_t *p = NULL; |
|
FT_Memory memory = extmemory; |
FT_Error error = FT_Err_Ok; |
|
|
if ( FT_NEW( p ) ) |
goto Exit; |
|
memory = NULL; |
p->opts = (bdf_options_t*)( ( opts != 0 ) ? opts : &_bdf_opts ); |
p->minlb = 32767; |
p->memory = extmemory; /* only during font creation */ |
|
_bdf_list_init( &p->list, extmemory ); |
|
error = _bdf_readstream( stream, _bdf_parse_start, |
(void *)p, &lineno ); |
if ( error ) |
goto Fail; |
|
if ( p->font != 0 ) |
{ |
/* If the font is not proportional, set the font's monowidth */ |
/* field to the width of the font bounding box. */ |
memory = p->font->memory; |
|
if ( p->font->spacing != BDF_PROPORTIONAL ) |
p->font->monowidth = p->font->bbx.width; |
|
/* If the number of glyphs loaded is not that of the original count, */ |
/* indicate the difference. */ |
if ( p->cnt != p->font->glyphs_used + p->font->unencoded_used ) |
{ |
FT_TRACE2(( "bdf_load_font: " ACMSG15, p->cnt, |
p->font->glyphs_used + p->font->unencoded_used )); |
p->font->modified = 1; |
} |
|
/* Once the font has been loaded, adjust the overall font metrics if */ |
/* necessary. */ |
if ( p->opts->correct_metrics != 0 && |
( p->font->glyphs_used > 0 || p->font->unencoded_used > 0 ) ) |
{ |
if ( p->maxrb - p->minlb != p->font->bbx.width ) |
{ |
FT_TRACE2(( "bdf_load_font: " ACMSG3, |
p->font->bbx.width, p->maxrb - p->minlb )); |
p->font->bbx.width = (unsigned short)( p->maxrb - p->minlb ); |
p->font->modified = 1; |
} |
|
if ( p->font->bbx.x_offset != p->minlb ) |
{ |
FT_TRACE2(( "bdf_load_font: " ACMSG4, |
p->font->bbx.x_offset, p->minlb )); |
p->font->bbx.x_offset = p->minlb; |
p->font->modified = 1; |
} |
|
if ( p->font->bbx.ascent != p->maxas ) |
{ |
FT_TRACE2(( "bdf_load_font: " ACMSG5, |
p->font->bbx.ascent, p->maxas )); |
p->font->bbx.ascent = p->maxas; |
p->font->modified = 1; |
} |
|
if ( p->font->bbx.descent != p->maxds ) |
{ |
FT_TRACE2(( "bdf_load_font: " ACMSG6, |
p->font->bbx.descent, p->maxds )); |
p->font->bbx.descent = p->maxds; |
p->font->bbx.y_offset = (short)( -p->maxds ); |
p->font->modified = 1; |
} |
|
if ( p->maxas + p->maxds != p->font->bbx.height ) |
{ |
FT_TRACE2(( "bdf_load_font: " ACMSG7, |
p->font->bbx.height, p->maxas + p->maxds )); |
p->font->bbx.height = (unsigned short)( p->maxas + p->maxds ); |
} |
|
if ( p->flags & _BDF_SWIDTH_ADJ ) |
FT_TRACE2(( "bdf_load_font: " ACMSG8 )); |
} |
} |
|
if ( p->flags & _BDF_START ) |
{ |
/* The ENDFONT field was never reached or did not exist. */ |
if ( !( p->flags & _BDF_GLYPHS ) ) |
{ |
/* Error happened while parsing header. */ |
FT_ERROR(( "bdf_load_font: " ERRMSG2, lineno )); |
error = FT_THROW( Corrupted_Font_Header ); |
goto Exit; |
} |
else |
{ |
/* Error happened when parsing glyphs. */ |
FT_ERROR(( "bdf_load_font: " ERRMSG3, lineno )); |
error = FT_THROW( Corrupted_Font_Glyphs ); |
goto Exit; |
} |
} |
|
if ( p->font != 0 ) |
{ |
/* Make sure the comments are NULL terminated if they exist. */ |
memory = p->font->memory; |
|
if ( p->font->comments_len > 0 ) |
{ |
if ( FT_RENEW_ARRAY( p->font->comments, |
p->font->comments_len, |
p->font->comments_len + 1 ) ) |
goto Fail; |
|
p->font->comments[p->font->comments_len] = 0; |
} |
} |
else if ( error == FT_Err_Ok ) |
error = FT_THROW( Invalid_File_Format ); |
|
*font = p->font; |
|
Exit: |
if ( p ) |
{ |
_bdf_list_done( &p->list ); |
|
memory = extmemory; |
|
FT_FREE( p ); |
} |
|
return error; |
|
Fail: |
bdf_free_font( p->font ); |
|
memory = extmemory; |
|
FT_FREE( p->font ); |
|
goto Exit; |
} |
|
|
FT_LOCAL_DEF( void ) |
bdf_free_font( bdf_font_t* font ) |
{ |
bdf_property_t* prop; |
unsigned long i; |
bdf_glyph_t* glyphs; |
FT_Memory memory; |
|
|
if ( font == 0 ) |
return; |
|
memory = font->memory; |
|
FT_FREE( font->name ); |
|
/* Free up the internal hash table of property names. */ |
if ( font->internal ) |
{ |
hash_free( (hashtable *)font->internal, memory ); |
FT_FREE( font->internal ); |
} |
|
/* Free up the comment info. */ |
FT_FREE( font->comments ); |
|
/* Free up the properties. */ |
for ( i = 0; i < font->props_size; i++ ) |
{ |
if ( font->props[i].format == BDF_ATOM ) |
FT_FREE( font->props[i].value.atom ); |
} |
|
FT_FREE( font->props ); |
|
/* Free up the character info. */ |
for ( i = 0, glyphs = font->glyphs; |
i < font->glyphs_used; i++, glyphs++ ) |
{ |
FT_FREE( glyphs->name ); |
FT_FREE( glyphs->bitmap ); |
} |
|
for ( i = 0, glyphs = font->unencoded; i < font->unencoded_used; |
i++, glyphs++ ) |
{ |
FT_FREE( glyphs->name ); |
FT_FREE( glyphs->bitmap ); |
} |
|
FT_FREE( font->glyphs ); |
FT_FREE( font->unencoded ); |
|
/* Free up the overflow storage if it was used. */ |
for ( i = 0, glyphs = font->overflow.glyphs; |
i < font->overflow.glyphs_used; i++, glyphs++ ) |
{ |
FT_FREE( glyphs->name ); |
FT_FREE( glyphs->bitmap ); |
} |
|
FT_FREE( font->overflow.glyphs ); |
|
/* bdf_cleanup */ |
hash_free( &(font->proptbl), memory ); |
|
/* Free up the user defined properties. */ |
for ( prop = font->user_props, i = 0; |
i < font->nuser_props; i++, prop++ ) |
{ |
FT_FREE( prop->name ); |
if ( prop->format == BDF_ATOM ) |
FT_FREE( prop->value.atom ); |
} |
|
FT_FREE( font->user_props ); |
|
/* FREE( font ); */ /* XXX Fixme */ |
} |
|
|
FT_LOCAL_DEF( bdf_property_t * ) |
bdf_get_font_property( bdf_font_t* font, |
const char* name ) |
{ |
hashnode hn; |
|
|
if ( font == 0 || font->props_size == 0 || name == 0 || *name == 0 ) |
return 0; |
|
hn = hash_lookup( name, (hashtable *)font->internal ); |
|
return hn ? ( font->props + hn->data ) : 0; |
} |
|
|
/* END */ |