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Commit7351b5f

Browse files
committed
Cleanup for some problems in tsearch patch:
- ispell initialization crashed on empty dictionary file- ispell initialization crashed on affix file with prefixes but no suffixes- stop words file was run through pg_verify_mbstr, with database encoding, but it's supposed to be UTF-8; similar bug for synonym files- bunch of comments added, typos fixed, and other cleanupIntroduced consistent encoding checking/conversion of data read from tsearchconfiguration files, by doing this in a single t_readline() subroutine(replacing direct usages of fgets). Cleaned up API for readstopwords too.Heikki Linnakangas
1 parentb918bf8 commit7351b5f

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14 files changed

+341
-328
lines changed

14 files changed

+341
-328
lines changed

‎src/backend/snowball/dict_snowball.c

Lines changed: 2 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,7 @@
66
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
77
*
88
* IDENTIFICATION
9-
* $PostgreSQL: pgsql/src/backend/snowball/dict_snowball.c,v 1.2 2007/08/22 01:39:44 tgl Exp $
9+
* $PostgreSQL: pgsql/src/backend/snowball/dict_snowball.c,v 1.3 2007/08/25 00:03:59 tgl Exp $
1010
*
1111
*-------------------------------------------------------------------------
1212
*/
@@ -192,7 +192,6 @@ dsnowball_init(PG_FUNCTION_ARGS)
192192
ListCell*l;
193193

194194
d= (DictSnowball*)palloc0(sizeof(DictSnowball));
195-
d->stoplist.wordop=recode_and_lowerstr;
196195

197196
foreach(l,dictoptions)
198197
{
@@ -204,8 +203,7 @@ dsnowball_init(PG_FUNCTION_ARGS)
204203
ereport(ERROR,
205204
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
206205
errmsg("multiple StopWords parameters")));
207-
readstoplist(defGetString(defel),&d->stoplist);
208-
sortstoplist(&d->stoplist);
206+
readstoplist(defGetString(defel),&d->stoplist,lowerstr);
209207
stoploaded= true;
210208
}
211209
elseif (pg_strcasecmp("Language",defel->defname)==0)

‎src/backend/tsearch/dict_ispell.c

Lines changed: 2 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $PostgreSQL: pgsql/src/backend/tsearch/dict_ispell.c,v 1.2 2007/08/22 01:39:44 tgl Exp $
10+
* $PostgreSQL: pgsql/src/backend/tsearch/dict_ispell.c,v 1.3 2007/08/25 00:03:59 tgl Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -39,7 +39,6 @@ dispell_init(PG_FUNCTION_ARGS)
3939
ListCell*l;
4040

4141
d= (DictISpell*)palloc0(sizeof(DictISpell));
42-
d->stoplist.wordop=recode_and_lowerstr;
4342

4443
foreach(l,dictoptions)
4544
{
@@ -73,8 +72,7 @@ dispell_init(PG_FUNCTION_ARGS)
7372
ereport(ERROR,
7473
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
7574
errmsg("multiple StopWords parameters")));
76-
readstoplist(defGetString(defel),&(d->stoplist));
77-
sortstoplist(&(d->stoplist));
75+
readstoplist(defGetString(defel),&(d->stoplist),lowerstr);
7876
stoploaded= true;
7977
}
8078
else

‎src/backend/tsearch/dict_simple.c

Lines changed: 8 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $PostgreSQL: pgsql/src/backend/tsearch/dict_simple.c,v 1.2 2007/08/22 01:39:44 tgl Exp $
10+
* $PostgreSQL: pgsql/src/backend/tsearch/dict_simple.c,v 1.3 2007/08/25 00:03:59 tgl Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -23,19 +23,17 @@
2323
typedefstruct
2424
{
2525
StopListstoplist;
26-
}DictExample;
26+
}DictSimple;
2727

2828

2929
Datum
3030
dsimple_init(PG_FUNCTION_ARGS)
3131
{
3232
List*dictoptions= (List*)PG_GETARG_POINTER(0);
33-
DictExample*d= (DictExample*)palloc0(sizeof(DictExample));
33+
DictSimple*d= (DictSimple*)palloc0(sizeof(DictSimple));
3434
boolstoploaded= false;
3535
ListCell*l;
3636

37-
d->stoplist.wordop=recode_and_lowerstr;
38-
3937
foreach(l,dictoptions)
4038
{
4139
DefElem*defel= (DefElem*)lfirst(l);
@@ -46,8 +44,7 @@ dsimple_init(PG_FUNCTION_ARGS)
4644
ereport(ERROR,
4745
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
4846
errmsg("multiple StopWords parameters")));
49-
readstoplist(defGetString(defel),&d->stoplist);
50-
sortstoplist(&d->stoplist);
47+
readstoplist(defGetString(defel),&d->stoplist,lowerstr);
5148
stoploaded= true;
5249
}
5350
else
@@ -65,16 +62,16 @@ dsimple_init(PG_FUNCTION_ARGS)
6562
Datum
6663
dsimple_lexize(PG_FUNCTION_ARGS)
6764
{
68-
DictExample*d= (DictExample*)PG_GETARG_POINTER(0);
65+
DictSimple*d= (DictSimple*)PG_GETARG_POINTER(0);
6966
char*in= (char*)PG_GETARG_POINTER(1);
7067
int32len=PG_GETARG_INT32(2);
71-
char*txt=lowerstr_with_len(in,len);
68+
char*txt;
7269
TSLexeme*res=palloc0(sizeof(TSLexeme)*2);
7370

71+
txt=lowerstr_with_len(in,len);
72+
7473
if (*txt=='\0'||searchstoplist(&(d->stoplist),txt))
75-
{
7674
pfree(txt);
77-
}
7875
else
7976
res[0].lexeme=txt;
8077

‎src/backend/tsearch/dict_synonym.c

Lines changed: 48 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $PostgreSQL: pgsql/src/backend/tsearch/dict_synonym.c,v 1.2 2007/08/22 04:13:15 tgl Exp $
10+
* $PostgreSQL: pgsql/src/backend/tsearch/dict_synonym.c,v 1.3 2007/08/25 00:03:59 tgl Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -20,9 +20,6 @@
2020
#include"tsearch/ts_utils.h"
2121
#include"utils/builtins.h"
2222

23-
24-
#defineSYNBUFLEN4096
25-
2623
typedefstruct
2724
{
2825
char*in;
@@ -31,23 +28,34 @@ typedef struct
3128

3229
typedefstruct
3330
{
34-
intlen;
31+
intlen;/* length of syn array */
3532
Syn*syn;
3633
}DictSyn;
3734

35+
/*
36+
* Finds the next whitespace-delimited word within the 'in' string.
37+
* Returns a pointer to the first character of the word, and a pointer
38+
* to the next byte after the last character in the word (in *end).
39+
*/
3840
staticchar*
3941
findwrd(char*in,char**end)
4042
{
4143
char*start;
4244

43-
*end=NULL;
45+
/* Skip leading spaces */
4446
while (*in&&t_isspace(in))
4547
in+=pg_mblen(in);
4648

49+
/* Return NULL on empty lines */
4750
if (*in=='\0')
51+
{
52+
*end=NULL;
4853
returnNULL;
54+
}
55+
4956
start=in;
5057

58+
/* Find end of word */
5159
while (*in&& !t_isspace(in))
5260
in+=pg_mblen(in);
5361

@@ -70,12 +78,11 @@ dsynonym_init(PG_FUNCTION_ARGS)
7078
ListCell*l;
7179
char*filename=NULL;
7280
FILE*fin;
73-
charbuf[SYNBUFLEN];
7481
char*starti,
7582
*starto,
7683
*end=NULL;
7784
intcur=0;
78-
intslen;
85+
char*line=NULL;
7986

8087
foreach(l,dictoptions)
8188
{
@@ -105,10 +112,33 @@ dsynonym_init(PG_FUNCTION_ARGS)
105112

106113
d= (DictSyn*)palloc0(sizeof(DictSyn));
107114

108-
while (fgets(buf,SYNBUFLEN,fin))
115+
while ((line=t_readline(fin))!=NULL)
109116
{
110-
slen=strlen(buf);
111-
pg_verifymbstr(buf,slen, false);
117+
starti=findwrd(line,&end);
118+
if (!starti)
119+
{
120+
/* Empty line */
121+
gotoskipline;
122+
}
123+
*end='\0';
124+
if (end >=line+strlen(line))
125+
{
126+
/* A line with only one word. Ignore silently. */
127+
gotoskipline;
128+
}
129+
130+
starto=findwrd(end+1,&end);
131+
if (!starto)
132+
{
133+
/* A line with only one word. Ignore silently. */
134+
gotoskipline;
135+
}
136+
*end='\0';
137+
138+
/* starti now points to the first word, and starto to the second
139+
* word on the line, with a \0 terminator at the end of both words.
140+
*/
141+
112142
if (cur==d->len)
113143
{
114144
if (d->len==0)
@@ -123,36 +153,19 @@ dsynonym_init(PG_FUNCTION_ARGS)
123153
}
124154
}
125155

126-
starti=findwrd(buf,&end);
127-
if (!starti)
128-
continue;
129-
*end='\0';
130-
if (end >=buf+slen)
131-
continue;
132-
133-
starto=findwrd(end+1,&end);
134-
if (!starto)
135-
continue;
136-
*end='\0';
137-
138-
d->syn[cur].in=recode_and_lowerstr(starti);
139-
d->syn[cur].out=recode_and_lowerstr(starto);
140-
if (!(d->syn[cur].in&&d->syn[cur].out))
141-
{
142-
FreeFile(fin);
143-
ereport(ERROR,
144-
(errcode(ERRCODE_OUT_OF_MEMORY),
145-
errmsg("out of memory")));
146-
}
156+
d->syn[cur].in=lowerstr(starti);
157+
d->syn[cur].out=lowerstr(starto);
147158

148159
cur++;
160+
161+
skipline:
162+
pfree(line);
149163
}
150164

151165
FreeFile(fin);
152166

153167
d->len=cur;
154-
if (cur>1)
155-
qsort(d->syn,d->len,sizeof(Syn),compareSyn);
168+
qsort(d->syn,d->len,sizeof(Syn),compareSyn);
156169

157170
PG_RETURN_POINTER(d);
158171
}
@@ -179,8 +192,7 @@ dsynonym_lexize(PG_FUNCTION_ARGS)
179192
if (!found)
180193
PG_RETURN_POINTER(NULL);
181194

182-
res=palloc(sizeof(TSLexeme)*2);
183-
memset(res,0,sizeof(TSLexeme)*2);
195+
res=palloc0(sizeof(TSLexeme)*2);
184196
res[0].lexeme=pstrdup(found->out);
185197

186198
PG_RETURN_POINTER(res);

‎src/backend/tsearch/dict_thesaurus.c

Lines changed: 15 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $PostgreSQL: pgsql/src/backend/tsearch/dict_thesaurus.c,v 1.2 2007/08/22 01:39:44 tgl Exp $
10+
* $PostgreSQL: pgsql/src/backend/tsearch/dict_thesaurus.c,v 1.3 2007/08/25 00:03:59 tgl Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -170,10 +170,10 @@ static void
170170
thesaurusRead(char*filename,DictThesaurus*d)
171171
{
172172
FILE*fh;
173-
charstr[BUFSIZ];
174173
intlineno=0;
175174
uint16idsubst=0;
176175
booluseasis= false;
176+
char*line;
177177

178178
filename=get_tsearch_config_filename(filename,"ths");
179179
fh=AllocateFile(filename,"r");
@@ -183,27 +183,28 @@ thesaurusRead(char *filename, DictThesaurus * d)
183183
errmsg("could not open thesaurus file \"%s\": %m",
184184
filename)));
185185

186-
while (fgets(str,sizeof(str),fh))
186+
while ((line=t_readline(fh))!=NULL)
187187
{
188-
char*ptr,
189-
*recoded;
188+
char*ptr;
190189
intstate=TR_WAITLEX;
191190
char*beginwrd=NULL;
192191
uint16posinsubst=0;
193192
uint16nwrd=0;
194193

195-
ptr=recoded= (char*)pg_do_encoding_conversion((unsignedchar*)str,strlen(str),
196-
GetDatabaseEncoding(),PG_UTF8);
197-
if (recoded==NULL)
198-
elog(ERROR,"encoding conversion failed");
199-
200194
lineno++;
201195

202-
/* is it comment ? */
203-
while (t_isspace(ptr))
196+
ptr=line;
197+
198+
/* is it a comment? */
199+
while (*ptr&&t_isspace(ptr))
204200
ptr+=pg_mblen(ptr);
205-
if (t_iseq(recoded,'#')||*recoded=='\0'||t_iseq(recoded,'\n')||t_iseq(recoded,'\r'))
201+
202+
if (t_iseq(ptr,'#')||*ptr=='\0'||
203+
t_iseq(ptr,'\n')||t_iseq(ptr,'\r'))
204+
{
205+
pfree(line);
206206
continue;
207+
}
207208

208209
while (*ptr)
209210
{
@@ -301,8 +302,7 @@ thesaurusRead(char *filename, DictThesaurus * d)
301302
lineno,filename)));
302303
}
303304

304-
if (recoded!=str)
305-
pfree(recoded);
305+
pfree(line);
306306
}
307307

308308
d->nsubst=idsubst;

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