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xwords/xwords4/linux/linuxdict.c

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/* -*-mode: C; fill-column: 78; c-basic-offset: 4;-*- */
/*
* Copyright 1997-2002 by Eric House (xwords@eehouse.org). All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef CLIENT_ONLY /* there's an else in the middle!!! */
#include <stdio.h>
#include <stdlib.h>
/* #include <prc.h> */
#include "comtypes.h"
#include "dictnryp.h"
#include "linuxmain.h"
#include "strutils.h"
typedef struct DictStart {
XP_U32 numNodes;
/* XP_U32 indexStart; */
array_edge* array;
} DictStart;
typedef struct LinuxDictionaryCtxt {
DictionaryCtxt super;
/* prc_t* pt; */
/* DictStart* starts; */
/* XP_U16 numStarts; */
} LinuxDictionaryCtxt;
/************************ Prototypes ***********************/
static XP_Bool initFromDictFile( LinuxDictionaryCtxt* dctx,
const char* fileName );
static void linux_dictionary_destroy( DictionaryCtxt* dict );
static const XP_UCHAR* linux_dict_getShortName( const DictionaryCtxt* dict );
/*****************************************************************************
*
****************************************************************************/
DictionaryCtxt*
linux_dictionary_make( MPFORMAL const char* dictFileName )
{
LinuxDictionaryCtxt* result =
(LinuxDictionaryCtxt*)XP_MALLOC(mpool, sizeof(*result));
XP_MEMSET( result, 0, sizeof(*result) );
dict_super_init( (DictionaryCtxt*)result );
MPASSIGN(result->super.mpool, mpool);
if ( !!dictFileName ) {
XP_Bool success = initFromDictFile( result, dictFileName );
if ( success ) {
result->super.destructor = linux_dictionary_destroy;
result->super.func_dict_getShortName = linux_dict_getShortName;
setBlankTile( &result->super );
} else {
XP_FREE( mpool, result );
result = NULL;
}
}
return (DictionaryCtxt*)result;
} /* gtk_dictionary_make */
static XP_U16
countSpecials( LinuxDictionaryCtxt* ctxt )
{
XP_U16 result = 0;
XP_U16 i;
for ( i = 0; i < ctxt->super.nFaces; ++i ) {
if ( IS_SPECIAL(ctxt->super.faces16[i] ) ) {
++result;
}
}
return result;
} /* countSpecials */
static XP_Bitmap
skipBitmap( LinuxDictionaryCtxt* ctxt, FILE* dictF )
{
XP_U8 nCols, nRows, nBytes;
LinuxBMStruct* lbs = NULL;
if ( 1 == fread( &nCols, sizeof(nCols), 1, dictF )
&& nCols > 0
&& 1 == fread( &nRows, sizeof(nRows), 1, dictF ) ) {
nBytes = ((nRows * nCols) + 7) / 8;
lbs = XP_MALLOC( ctxt->super.mpool, sizeof(*lbs) + nBytes );
lbs->nRows = nRows;
lbs->nCols = nCols;
lbs->nBytes = nBytes;
if ( 1 != fread( lbs + 1, nBytes, 1, dictF ) ) {
XP_FREE( ctxt->super.mpool, lbs );
lbs = NULL;
}
}
return lbs;
} /* skipBitmap */
static void
skipBitmaps( LinuxDictionaryCtxt* ctxt, FILE* dictF )
{
XP_U16 nSpecials;
XP_UCHAR* text;
XP_UCHAR** texts;
SpecialBitmaps* bitmaps;
Tile tile;
nSpecials = countSpecials( ctxt );
texts = (XP_UCHAR**)XP_MALLOC( ctxt->super.mpool,
nSpecials * sizeof(*texts) );
bitmaps = (SpecialBitmaps*)XP_MALLOC( ctxt->super.mpool,
nSpecials * sizeof(*bitmaps) );
for ( tile = 0; tile < ctxt->super.nFaces; ++tile ) {
XP_CHAR16 face = ctxt->super.faces16[(short)tile];
if ( IS_SPECIAL(face) ) {
XP_U8 txtlen;
XP_ASSERT( face < nSpecials );
/* get the string */
if ( 1 == fread( &txtlen, sizeof(txtlen), 1, dictF ) ) {
text = (XP_UCHAR*)XP_MALLOC(ctxt->super.mpool, txtlen+1);
if ( 1 == fread( text, txtlen, 1, dictF ) ) {
text[txtlen] = '\0';
texts[face] = text;
XP_DEBUGF( "skipping bitmaps for %s", texts[face] );
bitmaps[face].largeBM = skipBitmap( ctxt, dictF );
bitmaps[face].smallBM = skipBitmap( ctxt, dictF );
}
}
}
}
ctxt->super.chars = texts;
ctxt->super.bitmaps = bitmaps;
} /* skipBitmaps */
static XP_Bool
initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
{
XP_Bool formatOk = XP_FALSE;
XP_U8 numFaces;
long curPos, dictLength;
XP_U32 topOffset;
FILE* dictF = fopen( fileName, "r" );
unsigned short xloc;
XP_U16 flags;
XP_U16 facesSize;
XP_U16 charSize;
XP_ASSERT( dictF );
if ( 1 == fread( &flags, sizeof(flags), 1, dictF ) ) {
flags = ntohs(flags);
XP_DEBUGF( "flags=0x%x", flags );
#ifdef NODE_CAN_4
if ( flags == 0x0001 ) {
dctx->super.nodeSize = 3;
charSize = 1;
dctx->super.is_4_byte = XP_FALSE;
formatOk = XP_TRUE;
} else if ( flags == 0x0002 ) {
dctx->super.nodeSize = 3;
charSize = 2;
dctx->super.is_4_byte = XP_FALSE;
formatOk = XP_TRUE;
} else if ( flags == 0x0003 ) {
dctx->super.nodeSize = 4;
charSize = 2;
dctx->super.is_4_byte = XP_TRUE;
formatOk = XP_TRUE;
} else {
/* case I don't know how to deal with */
XP_ASSERT(0);
}
} else {
XP_ASSERT(0);
}
#else
XP_ASSERT( flags == 0x0001 );
#endif
if ( formatOk ) {
if ( 1 != fread( &numFaces, sizeof(numFaces), 1, dictF ) ) {
goto closeAndExit;
}
dctx->super.nFaces = numFaces;
dctx->super.countsAndValues = XP_MALLOC( dctx->super.mpool,
numFaces*2 );
facesSize = numFaces * sizeof(dctx->super.faces16[0]);
dctx->super.faces16 = XP_MALLOC( dctx->super.mpool, facesSize );
XP_MEMSET( dctx->super.faces16, 0, facesSize );
if ( 1 != fread( dctx->super.faces16, numFaces * charSize, 1,
dictF ) ) {
goto closeAndExit;
}
if ( charSize == sizeof(dctx->super.faces16[0]) ) {
/* fix endianness */
XP_U16 i;
for ( i = 0; i < numFaces; ++i ) {
XP_CHAR16 tmp = dctx->super.faces16[i];
dctx->super.faces16[i] = ntohs(tmp);
}
} else {
XP_UCHAR* src = ((XP_UCHAR*)(dctx->super.faces16)) + numFaces;
XP_CHAR16* dest = dctx->super.faces16 + numFaces;
while ( src-- <= (XP_UCHAR*)(dest--) ) {
*dest = (XP_CHAR16)*src;
}
}
if ( (1 != fread( &xloc, 2, 1, dictF ) )/* read in (dump) the xloc
header for now */
|| (1 != fread( dctx->super.countsAndValues, numFaces*2, 1,
dictF ) ) ) {
goto closeAndExit;
}
}
if ( formatOk ) {
skipBitmaps( dctx, dictF );
curPos = ftell( dictF );
fseek( dictF, 0L, SEEK_END );
dictLength = ftell( dictF ) - curPos;
fseek( dictF, curPos, SEEK_SET );
if ( dictLength > 0 ) {
if ( 1 != fread( &topOffset, sizeof(topOffset), 1, dictF ) ) {
goto closeAndExit;
}
/* it's in big-endian order */
topOffset = ntohl(topOffset);
dictLength -= sizeof(topOffset); /* first four bytes are offset */
}
if ( dictLength > 0 ) {
#ifdef DEBUG
# ifdef NODE_CAN_4
dctx->super.numEdges = dictLength / dctx->super.nodeSize;
XP_ASSERT( (dictLength % dctx->super.nodeSize) == 0 );
# else
dctx->super.numEdges = dictLength / 3;
XP_ASSERT( (dictLength % 3) == 0 );
# endif
#endif
dctx->super.base = (array_edge*)XP_MALLOC( dctx->super.mpool,
dictLength );
XP_ASSERT( !!dctx->super.base );
if ( 1 != fread( dctx->super.base, dictLength, 1, dictF ) ) {
goto closeAndExit;
}
dctx->super.topEdge = dctx->super.base + topOffset;
} else {
dctx->super.base = NULL;
dctx->super.topEdge = NULL;
}
dctx->super.name = copyString( dctx->super.mpool, fileName );
}
goto ok;
closeAndExit:
formatOk = XP_FALSE;
ok:
fclose( dictF );
return formatOk;
} /* initFromDictFile */
static void
freeSpecials( LinuxDictionaryCtxt* ctxt )
{
XP_U16 nSpecials = 0;
XP_U16 i;
for ( i = 0; i < ctxt->super.nFaces; ++i ) {
if ( IS_SPECIAL(ctxt->super.faces16[i]) ) {
if ( !!ctxt->super.bitmaps ) {
XP_Bitmap* bmp = ctxt->super.bitmaps[nSpecials].largeBM;
if ( !!bmp ) {
XP_FREE( ctxt->super.mpool, bmp );
}
bmp = ctxt->super.bitmaps[nSpecials].smallBM;
if ( !!bmp ) {
XP_FREE( ctxt->super.mpool, bmp );
}
}
if ( !!ctxt->super.chars && !!ctxt->super.chars[nSpecials]) {
XP_FREE( ctxt->super.mpool, ctxt->super.chars[nSpecials] );
}
++nSpecials;
}
}
if ( !!ctxt->super.bitmaps ) {
XP_FREE( ctxt->super.mpool, ctxt->super.bitmaps );
}
if ( !!ctxt->super.chars ) {
XP_FREE( ctxt->super.mpool, ctxt->super.chars );
}
} /* freeSpecials */
static void
linux_dictionary_destroy( DictionaryCtxt* dict )
{
LinuxDictionaryCtxt* ctxt = (LinuxDictionaryCtxt*)dict;
freeSpecials( ctxt );
if ( !!dict->topEdge ) {
XP_FREE( dict->mpool, dict->topEdge );
}
XP_FREE( dict->mpool, ctxt->super.countsAndValues );
XP_FREE( dict->mpool, ctxt->super.faces16 );
XP_FREE( dict->mpool, ctxt->super.name );
XP_FREE( dict->mpool, ctxt );
} /* linux_dictionary_destroy */
static const XP_UCHAR*
linux_dict_getShortName( const DictionaryCtxt* dict )
{
const XP_UCHAR* full = dict_getName( dict );
const char* c = strrchr( full, '/' );
if ( !!c ) {
++c;
} else {
c = full;
}
return c;
}
#else /* CLIENT_ONLY *IS* defined */
/* initFromDictFile:
* This guy reads in from a prc file, and probably hasn't worked in a year.
*/
#define RECS_BEFORE_DAWG 3 /* a hack */
static XP_Bool
initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
{
short i;
unsigned short* dataP;
unsigned nRecs;
prc_record_t* prect;
prc_t* pt = prcopen( fileName, PRC_OPEN_READ );
dctx->pt = pt; /* remember so we can close it later */
nRecs = prcgetnrecords( pt );
/* record 0 holds a struct whose 5th byte is the record num of the first
dawg record. 1 and 2 hold tile data. Let's assume 3 is the first dawg
record for now. */
prect = prcgetrecord( pt, 1 );
dctx->super.numFaces = prect->datalen; /* one char per byte */
dctx->super.faces = malloc( prect->datalen );
memcpy( dctx->super.faces, prect->data, prect->datalen );
dctx->super.counts = malloc( dctx->super.numFaces );
dctx->super.values = malloc( dctx->super.numFaces );
prect = prcgetrecord( pt, 2 );
dataP = (unsigned short*)prect->data + 1; /* skip the xloc header */
for ( i = 0; i < dctx->super.numFaces; ++i ) {
unsigned short byt = *dataP++;
dctx->super.values[i] = byt >> 8;
dctx->super.counts[i] = byt & 0xFF;
if ( dctx->super.values[i] == 0 ) {
dctx->super.counts[i] = 4; /* 4 blanks :-) */
}
}
dctx->numStarts = nRecs - RECS_BEFORE_DAWG;
dctx->starts = XP_MALLOC( dctx->numStarts * sizeof(*dctx->starts) );
for ( i = 0/* , offset = 0 */; i < dctx->numStarts; ++i ) {
prect = prcgetrecord( pt, i + RECS_BEFORE_DAWG );
dctx->starts[i].numNodes = prect->datalen / 3;
dctx->starts[i].array = (array_edge*)prect->data;
XP_ASSERT( (prect->datalen % 3) == 0 );
}
} /* initFromDictFile */
void
linux_dictionary_destroy( DictionaryCtxt* dict )
{
LinuxDictionaryCtxt* ctxt = (LinuxDictionaryCtxt*)dict;
prcclose( ctxt->pt );
}
#endif /* CLIENT_ONLY */
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