Parent: [f55496] (diff)

Child: [eacf71] (diff)

Download this file

rclaspell.cpp    523 lines (460 with data), 15.0 kB

  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
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
#ifndef TEST_RCLASPELL
/* Copyright (C) 2006 J.F.Dockes
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "autoconfig.h"
#endif
#ifdef RCL_USE_ASPELL
#include <unistd.h>
#include <dlfcn.h>
#include <iostream>
#include <stdlib.h>
#include <vector>
#include ASPELL_INCLUDE
#include "pathut.h"
#include "execmd.h"
#include "rclaspell.h"
#include "debuglog.h"
// Just a place where we keep the Aspell library entry points together
class AspellApi {
public:
struct AspellConfig *(*new_aspell_config)();
int (*aspell_config_replace)(struct AspellConfig *, const char * key,
const char * value);
struct AspellCanHaveError *(*new_aspell_speller)(struct AspellConfig *);
void (*delete_aspell_config)(struct AspellConfig *);
void (*delete_aspell_can_have_error)(struct AspellCanHaveError *);
struct AspellSpeller * (*to_aspell_speller)(struct AspellCanHaveError *);
struct AspellConfig * (*aspell_speller_config)(struct AspellSpeller *);
const struct AspellWordList * (*aspell_speller_suggest)
(struct AspellSpeller *, const char *, int);
int (*aspell_speller_check)(struct AspellSpeller *, const char *, int);
struct AspellStringEnumeration * (*aspell_word_list_elements)
(const struct AspellWordList * ths);
const char * (*aspell_string_enumeration_next)
(struct AspellStringEnumeration * ths);
void (*delete_aspell_string_enumeration)(struct AspellStringEnumeration *);
const struct AspellError *(*aspell_error)
(const struct AspellCanHaveError *);
const char *(*aspell_error_message)(const struct AspellCanHaveError *);
const char *(*aspell_speller_error_message)(const struct AspellSpeller *);
void (*delete_aspell_speller)(struct AspellSpeller *);
};
static AspellApi aapi;
#define NMTOPTR(NM, TP) \
if ((aapi.NM = TP dlsym(m_data->m_handle, #NM)) == 0) { \
badnames += #NM + string(" "); \
}
static const char *aspell_progs[] = {
#ifdef ASPELL_PROG
ASPELL_PROG ,
#endif
"/usr/local/bin/aspell",
"/usr/bin/aspell"
};
static const unsigned int naspellprogs = sizeof(aspell_progs) / sizeof(char*);
static const char *aspell_lib_suffixes[] = {
".so",
".so.15",
".so.16"
};
static const unsigned int nlibsuffs = sizeof(aspell_lib_suffixes) / sizeof(char *);
// Stuff that we don't wish to see in the .h (possible sysdeps, etc.)
class AspellData {
public:
AspellData()
: m_handle(0), m_speller(0)
{}
~AspellData() {
LOGDEB2(("~AspellData\n"));
if (m_handle) {
dlclose(m_handle);
m_handle = 0;
}
if (m_speller) {
// Dumps core if I do this??
//aapi.delete_aspell_speller(m_speller);
m_speller = 0;
LOGDEB2(("~AspellData: speller done\n"));
}
}
void *m_handle;
string m_exec;
AspellSpeller *m_speller;
};
Aspell::Aspell(RclConfig *cnf)
: m_config(cnf), m_data(0)
{
}
Aspell::~Aspell()
{
deleteZ(m_data);
}
bool Aspell::init(string &reason)
{
deleteZ(m_data);
// Language: we get this from the configuration, else from the NLS
// environment. The aspell language names used for selecting language
// definition files (used to create dictionaries) are like en, fr
if (!m_config->getConfParam("aspellLanguage", m_lang) || m_lang.empty()) {
string lang = "en";
const char *cp;
if ((cp = getenv("LC_ALL")))
lang = cp;
else if ((cp = getenv("LANG")))
lang = cp;
if (!lang.compare("C"))
lang = "en";
m_lang = lang.substr(0, lang.find_first_of("_"));
}
m_data = new AspellData;
for (unsigned int i = 0; i < naspellprogs; i++) {
if (access(aspell_progs[i], X_OK) == 0) {
m_data->m_exec = aspell_progs[i];
break;
}
}
if (m_data->m_exec.empty()) {
reason = "aspell program not found or not executable";
deleteZ(m_data);
return false;
}
// We first look for the aspell library in libdir, and also try to
// be clever with ASPELL_PROG.
vector<string> libdirs;
libdirs.push_back(LIBDIR);
#ifdef ASPELL_PROG
// The aspell library has to live under the same prefix as the
// aspell program.
{
string aspellPrefix = path_getfather(path_getfather(m_data->m_exec));
// This would probably require some more tweaking on solaris/irix etc.
string dir = sizeof(long) > 4 ? "lib64" : "lib";
string libaspell = path_cat(aspellPrefix, dir);
if (libaspell != LIBDIR)
libdirs.push_back(libaspell);
}
#endif
reason = "Could not open shared library ";
for (vector<string>::iterator it = libdirs.begin();
it != libdirs.end(); it++) {
string libbase = path_cat(*it, "libaspell");
string lib;
for (unsigned int i = 0; i < nlibsuffs; i++) {
lib = libbase + aspell_lib_suffixes[i];
reason += string("[") + lib + "] ";
if ((m_data->m_handle = dlopen(lib.c_str(), RTLD_LAZY)) != 0) {
reason.erase();
goto found;
}
}
}
found:
if (m_data->m_handle == 0) {
reason += string(" : ") + dlerror();
deleteZ(m_data);
return false;
}
string badnames;
NMTOPTR(new_aspell_config, (struct AspellConfig *(*)()));
NMTOPTR(aspell_config_replace, (int (*)(struct AspellConfig *,
const char *, const char *)));
NMTOPTR(new_aspell_speller,
(struct AspellCanHaveError *(*)(struct AspellConfig *)));
NMTOPTR(delete_aspell_config,
(void (*)(struct AspellConfig *)));
NMTOPTR(delete_aspell_can_have_error,
(void (*)(struct AspellCanHaveError *)));
NMTOPTR(to_aspell_speller,
(struct AspellSpeller *(*)(struct AspellCanHaveError *)));
NMTOPTR(aspell_speller_config,
(struct AspellConfig *(*)(struct AspellSpeller *)));
NMTOPTR(aspell_speller_suggest,
(const struct AspellWordList *(*)(struct AspellSpeller *,
const char *, int)));
NMTOPTR(aspell_speller_check,
(int (*)(struct AspellSpeller *, const char *, int)));
NMTOPTR(aspell_word_list_elements,
(struct AspellStringEnumeration *(*)
(const struct AspellWordList *)));
NMTOPTR(aspell_string_enumeration_next,
(const char * (*)(struct AspellStringEnumeration *)));
NMTOPTR(delete_aspell_string_enumeration,
(void (*)(struct AspellStringEnumeration *)));
NMTOPTR(aspell_error,
(const struct AspellError*(*)(const struct AspellCanHaveError *)));
NMTOPTR(aspell_error_message,
(const char *(*)(const struct AspellCanHaveError *)));
NMTOPTR(aspell_speller_error_message,
(const char *(*)(const struct AspellSpeller *)));
NMTOPTR(delete_aspell_speller, (void (*)(struct AspellSpeller *)));
if (!badnames.empty()) {
reason = string("Aspell::init: symbols not found:") + badnames;
deleteZ(m_data);
return false;
}
return true;
}
bool Aspell::ok()
{
return m_data != 0 && m_data->m_handle != 0;
}
string Aspell::dicPath()
{
return path_cat(m_config->getConfDir(),
string("aspdict.") + m_lang + string(".rws"));
}
// The data source for the create dictionary aspell command. We walk
// the term list, filtering out things that are probably not words.
// Note that the manual for the current version (0.60) of aspell
// states that utf-8 is not well supported, so that we should maybe
// also filter all 8bit chars.
class AspExecPv : public ExecCmdProvide {
public:
string *m_input; // pointer to string used as input buffer to command
Rcl::TermIter *m_tit;
Rcl::Db &m_db;
AspExecPv(string *i, Rcl::TermIter *tit, Rcl::Db &db)
: m_input(i), m_tit(tit), m_db(db)
{}
void newData() {
while (m_db.termWalkNext(m_tit, *m_input)) {
// Filter out terms beginning with upper case (special stuff) and
// containing numbers, or too long. Note that the 50 limit is a
// byte count, so not so high if there are multibyte chars.
if (m_input->empty() || m_input->length() > 50)
continue;
if ('A' <= m_input->at(0) && m_input->at(0) <= 'Z')
continue;
if (m_input->find_first_of("0123456789.@+-,#_") != string::npos)
continue;
// Got a non-empty sort-of appropriate term, let's send it to
// aspell
m_input->append("\n");
return;
}
// End of data. Tell so. Exec will close cmd.
m_input->erase();
}
};
bool Aspell::buildDict(Rcl::Db &db, string &reason)
{
if (!ok())
return false;
// We create the dictionary by executing the aspell command:
// aspell --lang=[lang] create master [dictApath]
ExecCmd aspell;
list<string> args;
args.push_back(string("--lang=")+ m_lang);
args.push_back("--encoding=utf-8");
args.push_back("create");
args.push_back("master");
args.push_back(dicPath());
aspell.setStderr("/dev/null");
Rcl::TermIter *tit = db.termWalkOpen();
if (tit == 0) {
reason = "termWalkOpen failed\n";
return false;
}
string termbuf;
AspExecPv pv(&termbuf, tit, db);
aspell.setProvide(&pv);
if (aspell.doexec(m_data->m_exec, args, &termbuf)) {
reason = string("aspell dictionary creation command failed.\n"
"One possible reason might be missing language "
"data files for lang = ") + m_lang;
return false;
}
db.termWalkClose(tit);
return true;
}
bool Aspell::make_speller(string& reason)
{
if (!ok())
return false;
if (m_data->m_speller != 0)
return true;
AspellCanHaveError *ret;
AspellConfig *config = aapi.new_aspell_config();
aapi.aspell_config_replace(config, "lang", m_lang.c_str());
aapi.aspell_config_replace(config, "encoding", "utf-8");
aapi.aspell_config_replace(config, "master", dicPath().c_str());
aapi.aspell_config_replace(config, "sug-mode", "fast");
// aapi.aspell_config_replace(config, "sug-edit-dist", "2");
ret = aapi.new_aspell_speller(config);
aapi.delete_aspell_config(config);
if (aapi.aspell_error(ret) != 0) {
reason = aapi.aspell_error_message(ret);
aapi.delete_aspell_can_have_error(ret);
return false;
}
m_data->m_speller = aapi.to_aspell_speller(ret);
return true;
}
bool Aspell::check(Rcl::Db &db, const string &term, string& reason)
{
LOGDEB2(("Aspell::check [%s]\n", term.c_str()));
if (!ok() || !make_speller(reason))
return false;
if (term.empty())
return true; //??
int ret = aapi.aspell_speller_check(m_data->m_speller,
term.c_str(), term.length());
reason.clear();
switch (ret) {
case 0: return false;
case 1: return true;
default:
case -1:
reason.append("Aspell error: ");
reason.append(aapi.aspell_speller_error_message(m_data->m_speller));
return false;
}
}
bool Aspell::suggest(Rcl::Db &db, const string &term,
list<string>& suggestions, string& reason)
{
if (!ok() || !make_speller(reason))
return false;
if (term.empty())
return true; //??
AspellCanHaveError *ret;
const AspellWordList *wl =
aapi.aspell_speller_suggest(m_data->m_speller,
term.c_str(), term.length());
if (wl == 0) {
reason = aapi.aspell_speller_error_message(m_data->m_speller);
return false;
}
AspellStringEnumeration *els = aapi.aspell_word_list_elements(wl);
const char *word;
while ((word = aapi.aspell_string_enumeration_next(els)) != 0) {
// stemDiffers checks that the word exists (we don't want
// aspell computed stuff, only exact terms from the dictionary),
// and that it stems differently to the base word (else it's not
// useful to expand the search). Or is it ?
// ******** This should depend if
// stemming is turned on or not for querying *******
string sw(word);
if (db.termExists(sw) && db.stemDiffers("english", sw, term))
suggestions.push_back(word);
}
aapi.delete_aspell_string_enumeration(els);
return true;
}
#endif // RCL_USE_ASPELL
#else // TEST_RCLASPELL test driver ->
#ifdef HAVE_CONFIG_H
#include "autoconfig.h"
#endif
#ifdef RCL_USE_ASPELL
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <iostream>
using namespace std;
#include "rclinit.h"
#include "rclconfig.h"
#include "rcldb.h"
#include "rclaspell.h"
static char *thisprog;
RclConfig *rclconfig;
Rcl::Db rcldb;
static char usage [] =
" -b : build dictionary\n"
" -s <term>: suggestions for term\n"
"\n\n"
;
static void
Usage(void)
{
fprintf(stderr, "%s: usage:\n%s", thisprog, usage);
exit(1);
}
static int op_flags;
#define OPT_MOINS 0x1
#define OPT_s 0x2
#define OPT_b 0x4
int main(int argc, char **argv)
{
string word;
thisprog = argv[0];
argc--; argv++;
while (argc > 0 && **argv == '-') {
(*argv)++;
if (!(**argv))
/* Cas du "adb - core" */
Usage();
while (**argv)
switch (*(*argv)++) {
case 'b': op_flags |= OPT_b; break;
case 's': op_flags |= OPT_s; if (argc < 2) Usage();
word = *(++argv);
argc--;
goto b1;
default: Usage(); break;
}
b1: argc--; argv++;
}
if (argc != 0 || op_flags == 0)
Usage();
string reason;
rclconfig = recollinit(0, 0, reason);
if (!rclconfig || !rclconfig->ok()) {
fprintf(stderr, "Configuration problem: %s\n", reason.c_str());
exit(1);
}
string dbdir = rclconfig->getDbDir();
if (dbdir.empty()) {
fprintf(stderr, "No db directory in configuration");
exit(1);
}
if (!rcldb.open(dbdir, Rcl::Db::DbRO, 0)) {
fprintf(stderr, "Could not open database in %s\n", dbdir.c_str());
exit(1);
}
Aspell aspell(rclconfig);
if (!aspell.init(reason)) {
cerr << "Init failed: " << reason << endl;
exit(1);
}
if (op_flags & OPT_b) {
if (!aspell.buildDict(rcldb, reason)) {
cerr << "buildDict failed: " << reason << endl;
exit(1);
}
} else {
list<string> suggs;
if (!aspell.suggest(rcldb, word, suggs, reason)) {
cerr << "suggest failed: " << reason << endl;
exit(1);
}
cout << "Suggestions for " << word << ":" << endl;
for (list<string>::iterator it = suggs.begin();
it != suggs.end(); it++) {
cout << *it << endl;
}
}
exit(0);
}
#else
int main(int argc, char **argv)
{return 1;}
#endif // RCL_USE_ASPELL
#endif // TEST_RCLASPELL test driver