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Apple dictionaries
# Thanks to commenters for providing the base of this much nicer implementation!
# Save and run with $ python 0dedict.py
# You may need to hunt down the dictionary files yourself and change the awful path string below.
# This works for me on MacOS 10.14 Mohave
from struct import unpack
from zlib import decompress
import re
filename = '/System/Library/Assets/com_apple_MobileAsset_DictionaryServices_dictionaryOSX/9f5862030e8f00af171924ebbc23ebfd6e91af78.asset/AssetData/Oxford Dictionary of English.dictionary/Contents/Resources/Body.data'
f = open(filename, 'rb')
def gen_entry():
f.seek(0x40)
limit = 0x40 + unpack('i', f.read(4))[0]
f.seek(0x60)
while f.tell()<limit:
sz, = unpack('i', f.read(4))
buf = decompress(f.read(sz)[8:])
pos = 0
while pos < len(buf):
chunksize, = unpack('i', buf[pos:pos+4])
pos += 4
entry = buf[pos:pos+chunksize]
title = re.search('d:title="(.*?)"', entry).group(1)
yield title, entry
pos += chunksize
for word, definition in gen_entry():
print(word)
// *** Old code - not needed given the python code above
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "zlib.h"
#define CHUNK 16384
/*
40 Length of the zlib stream
4c 0020
54 0275 number of blocks
60 808c pointer to the next block
64 8088 length of the first block
68 047a4a length of the unpacked block
6c start of the zlib stream
80fc second block
13cd134
13cd174
*/
int unpack(unsigned char *in, int len)
{
int ret,outed=0;
unsigned have;
z_stream strm;
unsigned char out[CHUNK];
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
strm.avail_in = 0;
strm.next_in = Z_NULL;
ret = inflateInit(&strm);
if (ret != Z_OK)
return ret;
strm.avail_in = len;
strm.next_in = in;
do {
strm.avail_out = CHUNK;
strm.next_out = out;
ret = inflate(&strm, Z_NO_FLUSH);
assert(ret != Z_STREAM_ERROR); /* state not clobbered */
switch (ret) {
case Z_NEED_DICT:
ret = Z_DATA_ERROR; /* and fall through */
case Z_DATA_ERROR:
case Z_MEM_ERROR:
(void)inflateEnd(&strm);
return ret;
}
// printf("%lx %x\n",strm.next_in-in,strm.avail_in);
have = CHUNK - strm.avail_out /* - (outed?0:4)*/;
int off = 0;
/*
while (have - off > 3 && out[off] != '<' && out[1+off] != 'd' && out[2+off] != ':') {
++off;
}*/
if (have - off <= 3) {
fprintf(stderr, "could not find entry\n");
}
if (fwrite(out + off/*+(outed?0:4)*/, have - off, 1, stdout) != 1 || ferror(stdout)) {
(void)inflateEnd(&strm);
return Z_ERRNO;
}
//exit(0);
outed+=have;
} while (strm.avail_out == 0);
printf("%06x\n",outed);
(void)inflateEnd(&strm);
return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
}
char filename[256];
int main(int argc,char **argv) {
FILE *fin; int limit,blen=0,p,l,bcnt=0; unsigned char *buf=NULL;
assert(argc >= 2);
sprintf(filename,"/Library/Dictionaries/%s.dictionary/Contents/Body.data",argv[1]);
if((fin=fopen(filename,"rb"))) {
fseek(fin,0x40,SEEK_SET);
fread(&l,1,4,fin);
limit=0x40+l;
p=0x60;
do {
fseek(fin,p,SEEK_SET);
fread(&l,1,4,fin);
// if(0==l) break;
if(blen<l) {
if(buf!=NULL) free(buf);
blen=l;
buf=(unsigned char *)malloc(blen);
}
fread(buf,1,l,fin);
//fprintf(stderr, "%x@%06x: %x>%06x\n",bcnt,p,l,((int *)buf)[1]);
unpack(buf+8,l-8);
p+=4+l;
++bcnt;
} while(p<limit);
free(buf);
fclose(fin);
}
return 0;
}
// This program strips the first 4 characters from each line in the input
#include <stdio.h>
int main() {
while(!ferror(stdin) && !feof(stdin)) {
size_t len = 0;
char *line = fgetln(stdin, &len);
if (!line) break;
if (len > 4)
fwrite(line + 4, 1, len - 4, stdout);
}
return 0;
}
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