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use nmap -- as test case for doing same in jni

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This commit is contained in:
Andy2 2011-07-15 18:24:08 -07:00
parent febb640049
commit d81458c34c
1 changed files with 19 additions and 12 deletions
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31
xwords4/linux/linuxdict.c
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@ -22,6 +22,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
/* #include <prc.h> */
#include "comtypes.h"
@ -37,6 +41,8 @@ typedef struct DictStart {
typedef struct LinuxDictionaryCtxt {
DictionaryCtxt super;
void* mmapBase;
size_t mmapLength;
/* prc_t* pt; */
/* DictStart* starts; */
/* XP_U16 numStarts; */
@ -203,7 +209,7 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
XP_U8 numFaces, numFaceBytes;
long curPos, dictLength;
XP_U32 topOffset;
FILE* dictF = fopen( fileName, "r" );
FILE* dictF;
unsigned short xloc;
XP_U16 flags;
XP_U16 facesSize;
@ -211,6 +217,13 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
XP_Bool isUTF8 = XP_FALSE;
XP_Bool hasHeader = XP_FALSE;
struct stat statbuf;
if ( 0 != stat( fileName, &statbuf ) ) {
goto closeAndExit;
}
dctx->mmapLength = statbuf.st_size;
dictF = fopen( fileName, "r" );
XP_ASSERT( dictF );
if ( 1 == fread( &flags, sizeof(flags), 1, dictF ) ) {
flags = ntohs(flags);
@ -316,9 +329,7 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
skipBitmaps( dctx, dictF );
curPos = ftell( dictF );
fseek( dictF, 0L, SEEK_END );
dictLength = ftell( dictF ) - curPos;
fseek( dictF, curPos, SEEK_SET );
dictLength = dctx->mmapLength - curPos;
if ( dictLength > 0 ) {
if ( 1 != fread( &topOffset, sizeof(topOffset), 1, dictF ) ) {
@ -339,13 +350,9 @@ initFromDictFile( LinuxDictionaryCtxt* dctx, const char* fileName )
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->mmapBase = mmap( NULL, dctx->mmapLength, PROT_READ, MAP_PRIVATE, fileno(dictF), 0 );
XP_ASSERT( MAP_FAILED != dctx->mmapBase );
dctx->super.base = (array_edge*)(dctx->mmapBase + ftell( dictF ) );
dctx->super.topEdge = dctx->super.base + topOffset;
} else {
@ -404,7 +411,7 @@ linux_dictionary_destroy( DictionaryCtxt* dict )
freeSpecials( ctxt );
if ( !!dict->topEdge ) {
XP_FREE( dict->mpool, dict->topEdge );
(void)munmap( ctxt->mmapBase, ctxt->mmapLength );
}
XP_FREE( dict->mpool, ctxt->super.countsAndValues );