summaryrefslogtreecommitdiffstats
path: root/intl/icu/source/tools/gendict/gendict.cpp
blob: 75c0bdd052e6bfb668126b810e42a741b579bacc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
// Copyright (C) 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
*   Copyright (C) 2002-2016, International Business Machines
*   Corporation and others.  All Rights Reserved.
**********************************************************************
*
* File gendict.cpp
*/

#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "unicode/ucnv.h"
#include "unicode/uniset.h"
#include "unicode/unistr.h"
#include "unicode/uclean.h"
#include "unicode/udata.h"
#include "unicode/putil.h"
#include "unicode/ucharstriebuilder.h"
#include "unicode/bytestriebuilder.h"
#include "unicode/ucharstrie.h"
#include "unicode/bytestrie.h"
#include "unicode/ucnv.h"
#include "unicode/utf16.h"

#include "charstr.h"
#include "dictionarydata.h"
#include "uoptions.h"
#include "unewdata.h"
#include "cmemory.h"
#include "uassert.h"
#include "ucbuf.h"
#include "toolutil.h"
#include "cstring.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "putilimp.h"
UDate startTime;

static int elapsedTime() {
  return (int)uprv_floor((uprv_getRawUTCtime()-startTime)/1000.0);
}

U_NAMESPACE_USE

static char *progName;
static UOption options[]={
    UOPTION_HELP_H,             /* 0 */
    UOPTION_HELP_QUESTION_MARK, /* 1 */
    UOPTION_VERBOSE,            /* 2 */
    UOPTION_ICUDATADIR,         /* 4 */
    UOPTION_COPYRIGHT,          /* 5 */
    { "uchars", NULL, NULL, NULL, '\1', UOPT_NO_ARG, 0}, /* 6 */
    { "bytes", NULL, NULL, NULL, '\1', UOPT_NO_ARG, 0}, /* 7 */
    { "transform", NULL, NULL, NULL, '\1', UOPT_REQUIRES_ARG, 0}, /* 8 */
    UOPTION_QUIET,              /* 9 */
};

enum arguments {
    ARG_HELP = 0,
    ARG_QMARK,
    ARG_VERBOSE,
    ARG_ICUDATADIR,
    ARG_COPYRIGHT,
    ARG_UCHARS,
    ARG_BYTES,
    ARG_TRANSFORM,
    ARG_QUIET
};

// prints out the standard usage method describing command line arguments, 
// then bails out with the desired exit code
static void usageAndDie(UErrorCode retCode) {
    fprintf((U_SUCCESS(retCode) ? stdout : stderr), "Usage: %s -trietype [-options] input-dictionary-file output-file\n", progName);
    fprintf((U_SUCCESS(retCode) ? stdout : stderr),
           "\tRead in a word list and write out a string trie dictionary\n"
           "options:\n"
           "\t-h or -? or --help  this usage text\n"
           "\t-V or --version     show a version message\n"
           "\t-c or --copyright   include a copyright notice\n"
           "\t-v or --verbose     turn on verbose output\n"
           "\t-q or --quiet       do not display warnings and progress\n"
           "\t-i or --icudatadir  directory for locating any needed intermediate data files,\n" // TODO: figure out if we need this option
           "\t                    followed by path, defaults to %s\n"
           "\t--uchars            output a UCharsTrie (mutually exclusive with -b!)\n"
           "\t--bytes             output a BytesTrie (mutually exclusive with -u!)\n"
           "\t--transform         the kind of transform to use (eg --transform offset-40A3,\n"
           "\t                    which specifies an offset transform with constant 0x40A3)\n",
            u_getDataDirectory());
    exit(retCode);
}


/* UDataInfo cf. udata.h */
static UDataInfo dataInfo = {
    sizeof(UDataInfo),
    0,

    U_IS_BIG_ENDIAN,
    U_CHARSET_FAMILY,
    U_SIZEOF_UCHAR,
    0,

    { 0x44, 0x69, 0x63, 0x74 },     /* "Dict" */
    { 1, 0, 0, 0 },                 /* format version */
    { 0, 0, 0, 0 }                  /* data version */
};

#if !UCONFIG_NO_BREAK_ITERATION

// A wrapper for both BytesTrieBuilder and UCharsTrieBuilder.
// may want to put this somewhere in ICU, as it could be useful outside
// of this tool?
class DataDict {
private:
    BytesTrieBuilder *bt;
    UCharsTrieBuilder *ut;
    UChar32 transformConstant;
    int32_t transformType;
public:
    // constructs a new data dictionary. if there is an error, 
    // it will be returned in status
    // isBytesTrie != 0 will produce a BytesTrieBuilder,
    // isBytesTrie == 0 will produce a UCharsTrieBuilder
    DataDict(UBool isBytesTrie, UErrorCode &status) : bt(NULL), ut(NULL), 
        transformConstant(0), transformType(DictionaryData::TRANSFORM_NONE) {
        if (isBytesTrie) {
            bt = new BytesTrieBuilder(status);
        } else {
            ut = new UCharsTrieBuilder(status);
        }
    }

    ~DataDict() {
        delete bt;
        delete ut;
    }

private:
    char transform(UChar32 c, UErrorCode &status) {
        if (transformType == DictionaryData::TRANSFORM_TYPE_OFFSET) {
            if (c == 0x200D) { return (char)0xFF; }
            else if (c == 0x200C) { return (char)0xFE; }
            int32_t delta = c - transformConstant;
            if (delta < 0 || 0xFD < delta) {
                fprintf(stderr, "Codepoint U+%04lx out of range for --transform offset-%04lx!\n",
                        (long)c, (long)transformConstant);
                exit(U_ILLEGAL_ARGUMENT_ERROR); // TODO: should return and print the line number
            }
            return (char)delta;
        } else { // no such transform type 
            status = U_INTERNAL_PROGRAM_ERROR;
            return (char)c; // it should be noted this transform type will not generally work
        }
    }

    void transform(const UnicodeString &word, CharString &buf, UErrorCode &errorCode) {
        UChar32 c = 0;
        int32_t len = word.length();
        for (int32_t i = 0; i < len; i += U16_LENGTH(c)) {
            c = word.char32At(i);
            buf.append(transform(c, errorCode), errorCode);
        }
    }

public:
    // sets the desired transformation data.
    // should be populated from a command line argument
    // so far the only acceptable format is offset-<hex constant>
    // eventually others (mask-<hex constant>?) may be enabled
    // more complex functions may be more difficult
    void setTransform(const char *t) {
        if (strncmp(t, "offset-", 7) == 0) {
            char *end;
            unsigned long base = uprv_strtoul(t + 7, &end, 16);
            if (end == (t + 7) || *end != 0 || base > 0x10FF80) {
                fprintf(stderr, "Syntax for offset value in --transform offset-%s invalid!\n", t + 7);
                usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
            }
            transformType = DictionaryData::TRANSFORM_TYPE_OFFSET;
            transformConstant = (UChar32)base;
        }
        else {
            fprintf(stderr, "Invalid transform specified: %s\n", t);
            usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
        }
    }

    // add a word to the trie
    void addWord(const UnicodeString &word, int32_t value, UErrorCode &status) {
        if (bt) {
            CharString buf;
            transform(word, buf, status);
            bt->add(buf.toStringPiece(), value, status);
        }
        if (ut) { ut->add(word, value, status); }
    }

    // if we are a bytestrie, give back the StringPiece representing the serialized version of us
    StringPiece serializeBytes(UErrorCode &status) {
        return bt->buildStringPiece(USTRINGTRIE_BUILD_SMALL, status);
    }

    // if we are a ucharstrie, produce the UnicodeString representing the serialized version of us
    void serializeUChars(UnicodeString &s, UErrorCode &status) {
        ut->buildUnicodeString(USTRINGTRIE_BUILD_SMALL, s, status);
    }

    int32_t getTransform() {
        return (int32_t)(transformType | transformConstant); 
    }
};
#endif

static const UChar LINEFEED_CHARACTER = 0x000A;
static const UChar CARRIAGE_RETURN_CHARACTER = 0x000D;

static UBool readLine(UCHARBUF *f, UnicodeString &fileLine, IcuToolErrorCode &errorCode) {
    int32_t lineLength;
    const UChar *line = ucbuf_readline(f, &lineLength, errorCode);
    if(line == NULL || errorCode.isFailure()) { return FALSE; }
    // Strip trailing CR/LF, comments, and spaces.
    const UChar *comment = u_memchr(line, 0x23, lineLength);  // '#'
    if(comment != NULL) {
        lineLength = (int32_t)(comment - line);
    } else {
        while(lineLength > 0 && (line[lineLength - 1] == CARRIAGE_RETURN_CHARACTER || line[lineLength - 1] == LINEFEED_CHARACTER)) { --lineLength; }
    }
    while(lineLength > 0 && u_isspace(line[lineLength - 1])) { --lineLength; }
    fileLine.setTo(FALSE, line, lineLength);
    return TRUE;
}

//----------------------------------------------------------------------------
//
//  main      for gendict
//
//----------------------------------------------------------------------------
int  main(int argc, char **argv) {
    //
    // Pick up and check the command line arguments,
    //    using the standard ICU tool utils option handling.
    //
    U_MAIN_INIT_ARGS(argc, argv);
    progName = argv[0];
    argc=u_parseArgs(argc, argv, UPRV_LENGTHOF(options), options);
    if(argc<0) {
        // Unrecognized option
        fprintf(stderr, "error in command line argument \"%s\"\n", argv[-argc]);
        usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
    }

    if(options[ARG_HELP].doesOccur || options[ARG_QMARK].doesOccur) {
        //  -? or -h for help.
        usageAndDie(U_ZERO_ERROR);
    }

    UBool verbose = options[ARG_VERBOSE].doesOccur;
    UBool quiet = options[ARG_QUIET].doesOccur;

    if (argc < 3) {
        fprintf(stderr, "input and output file must both be specified.\n");
        usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
    }
    const char *outFileName  = argv[2];
    const char *wordFileName = argv[1];

    startTime = uprv_getRawUTCtime(); // initialize start timer

	if (options[ARG_ICUDATADIR].doesOccur) {
        u_setDataDirectory(options[ARG_ICUDATADIR].value);
    }

    const char *copyright = NULL;
    if (options[ARG_COPYRIGHT].doesOccur) {
        copyright = U_COPYRIGHT_STRING;
    }

    if (options[ARG_UCHARS].doesOccur == options[ARG_BYTES].doesOccur) {
        fprintf(stderr, "you must specify exactly one type of trie to output!\n");
        usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
    }
    UBool isBytesTrie = options[ARG_BYTES].doesOccur;
    if (isBytesTrie != options[ARG_TRANSFORM].doesOccur) {
        fprintf(stderr, "you must provide a transformation for a bytes trie, and must not provide one for a uchars trie!\n");
        usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
    }

    IcuToolErrorCode status("gendict/main()");

#if UCONFIG_NO_BREAK_ITERATION || UCONFIG_NO_FILE_IO
    const char* outDir=NULL;

    UNewDataMemory *pData;
    char msg[1024];
    UErrorCode tempstatus = U_ZERO_ERROR;

    /* write message with just the name */ // potential for a buffer overflow here...
    sprintf(msg, "gendict writes dummy %s because of UCONFIG_NO_BREAK_ITERATION and/or UCONFIG_NO_FILE_IO, see uconfig.h", outFileName);
    fprintf(stderr, "%s\n", msg);

    /* write the dummy data file */
    pData = udata_create(outDir, NULL, outFileName, &dataInfo, NULL, &tempstatus);
    udata_writeBlock(pData, msg, strlen(msg));
    udata_finish(pData, &tempstatus);
    return (int)tempstatus;

#else
    //  Read in the dictionary source file
    if (verbose) { printf("Opening file %s...\n", wordFileName); }
    const char *codepage = "UTF-8";
    UCHARBUF *f = ucbuf_open(wordFileName, &codepage, TRUE, FALSE, status);
    if (status.isFailure()) {
        fprintf(stderr, "error opening input file: ICU Error \"%s\"\n", status.errorName());
        exit(status.reset());
    }
    if (verbose) { printf("Initializing dictionary builder of type %s...\n", (isBytesTrie ? "BytesTrie" : "UCharsTrie")); }
    DataDict dict(isBytesTrie, status);
    if (status.isFailure()) {
        fprintf(stderr, "new DataDict: ICU Error \"%s\"\n", status.errorName());
        exit(status.reset());
    }
    if (options[ARG_TRANSFORM].doesOccur) {
        dict.setTransform(options[ARG_TRANSFORM].value);
    }

    UnicodeString fileLine;
    if (verbose) { puts("Adding words to dictionary..."); }
    UBool hasValues = FALSE;
    UBool hasValuelessContents = FALSE;
    int lineCount = 0;
    int wordCount = 0;
    int minlen = 255;
    int maxlen = 0;
    UBool isOk = TRUE;
    while (readLine(f, fileLine, status)) {
        lineCount++;
        if (fileLine.isEmpty()) continue;
        
        // Parse word [spaces value].
        int32_t keyLen;
        for (keyLen = 0; keyLen < fileLine.length() && !u_isspace(fileLine[keyLen]); ++keyLen) {}
        if (keyLen == 0) {
            fprintf(stderr, "Error: no word on line %i!\n", lineCount);
            isOk = FALSE;
            continue;
        }
        int32_t valueStart;
        for (valueStart = keyLen;
            valueStart < fileLine.length() && u_isspace(fileLine[valueStart]);
            ++valueStart) {}

        if (keyLen < valueStart) {
            int32_t valueLength = fileLine.length() - valueStart;
            if (valueLength > 15) {
                fprintf(stderr, "Error: value too long on line %i!\n", lineCount);
                isOk = FALSE;
                continue;
            }
            char s[16];
            fileLine.extract(valueStart, valueLength, s, 16, US_INV);
            char *end;
            unsigned long value = uprv_strtoul(s, &end, 0);
            if (end == s || *end != 0 || (int32_t)uprv_strlen(s) != valueLength || value > 0xffffffff) {
                fprintf(stderr, "Error: value syntax error or value too large on line %i!\n", lineCount);
                isOk = FALSE;
                continue;
            }
            dict.addWord(fileLine.tempSubString(0, keyLen), (int32_t)value, status);
            hasValues = TRUE;
            wordCount++;
            if (keyLen < minlen) minlen = keyLen;
            if (keyLen > maxlen) maxlen = keyLen;
        } else {
            dict.addWord(fileLine.tempSubString(0, keyLen), 0, status);
            hasValuelessContents = TRUE;
            wordCount++;
            if (keyLen < minlen) minlen = keyLen;
            if (keyLen > maxlen) maxlen = keyLen;
        }

        if (status.isFailure()) {
            fprintf(stderr, "ICU Error \"%s\": Failed to add word to trie at input line %d in input file\n",
                status.errorName(), lineCount);
            exit(status.reset());
        }
    }
    if (verbose) { printf("Processed %d lines, added %d words, minlen %d, maxlen %d\n", lineCount, wordCount, minlen, maxlen); }

    if (!isOk && status.isSuccess()) {
        status.set(U_ILLEGAL_ARGUMENT_ERROR);
    }
    if (hasValues && hasValuelessContents) {
        fprintf(stderr, "warning: file contained both valued and unvalued strings!\n");
    }

    if (verbose) { printf("Serializing data...isBytesTrie? %d\n", isBytesTrie); }
    int32_t outDataSize;
    const void *outData;
    UnicodeString usp;
    if (isBytesTrie) {
        StringPiece sp = dict.serializeBytes(status);
        outDataSize = sp.size();
        outData = sp.data();
    } else {
        dict.serializeUChars(usp, status);
        outDataSize = usp.length() * U_SIZEOF_UCHAR;
        outData = usp.getBuffer();
    }
    if (status.isFailure()) {
        fprintf(stderr, "gendict: got failure of type %s while serializing, if U_ILLEGAL_ARGUMENT_ERROR possibly due to duplicate dictionary entries\n", status.errorName());
        exit(status.reset());
    }
    if (verbose) { puts("Opening output file..."); }
    UNewDataMemory *pData = udata_create(NULL, NULL, outFileName, &dataInfo, copyright, status);
    if (status.isFailure()) {
        fprintf(stderr, "gendict: could not open output file \"%s\", \"%s\"\n", outFileName, status.errorName());
        exit(status.reset());
    }

    if (verbose) { puts("Writing to output file..."); }
    int32_t indexes[DictionaryData::IX_COUNT] = {
        DictionaryData::IX_COUNT * sizeof(int32_t), 0, 0, 0, 0, 0, 0, 0
    };
    int32_t size = outDataSize + indexes[DictionaryData::IX_STRING_TRIE_OFFSET];
    indexes[DictionaryData::IX_RESERVED1_OFFSET] = size;
    indexes[DictionaryData::IX_RESERVED2_OFFSET] = size;
    indexes[DictionaryData::IX_TOTAL_SIZE] = size;

    indexes[DictionaryData::IX_TRIE_TYPE] = isBytesTrie ? DictionaryData::TRIE_TYPE_BYTES : DictionaryData::TRIE_TYPE_UCHARS;
    if (hasValues) {
        indexes[DictionaryData::IX_TRIE_TYPE] |= DictionaryData::TRIE_HAS_VALUES;
    }

    indexes[DictionaryData::IX_TRANSFORM] = dict.getTransform();
    udata_writeBlock(pData, indexes, sizeof(indexes));
    udata_writeBlock(pData, outData, outDataSize);
    size_t bytesWritten = udata_finish(pData, status);
    if (status.isFailure()) {
        fprintf(stderr, "gendict: error \"%s\" writing the output file\n", status.errorName());
        exit(status.reset());
    }

    if (bytesWritten != (size_t)size) {
        fprintf(stderr, "Error writing to output file \"%s\"\n", outFileName);
        exit(U_INTERNAL_PROGRAM_ERROR);
    }

    if (!quiet) { printf("%s: done writing\t%s (%ds).\n", progName, outFileName, elapsedTime()); }

#ifdef TEST_GENDICT
    if (isBytesTrie) {
        BytesTrie::Iterator it(outData, outDataSize, status);
        while (it.hasNext()) {
            it.next(status);
            const StringPiece s = it.getString();
            int32_t val = it.getValue();
            printf("%s -> %i\n", s.data(), val);
        }
    } else {
        UCharsTrie::Iterator it((const UChar *)outData, outDataSize, status);
        while (it.hasNext()) {
            it.next(status);
            const UnicodeString s = it.getString();
            int32_t val = it.getValue();
            char tmp[1024];
            s.extract(0, s.length(), tmp, 1024);
            printf("%s -> %i\n", tmp, val);
        }
    }
#endif

    return 0;
#endif /* #if !UCONFIG_NO_BREAK_ITERATION */
}