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DefineCollation() code cleanup

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Reorganize the code in DefineCollation() so that the parts using the
FROM clause and the parts not doing so are more cleanly separated.  No
functionality change intended.

Reviewed-by: Julien Rouhaud <rjuju123@gmail.com>
Discussion: https://www.postgresql.org/message-id/29ae752f-80e9-8d31-601c-62cf01cc93d8@enterprisedb.com
This commit is contained in:
Peter Eisentraut 2022-03-11 08:27:24 +01:00
parent 9198e63996
commit e94bb1473e
1 changed files with 57 additions and 52 deletions
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109
src/backend/commands/collationcmds.c
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@ -63,12 +63,11 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e
DefElem *providerEl = NULL;
DefElem *deterministicEl = NULL;
DefElem *versionEl = NULL;
char *collcollate = NULL;
char *collctype = NULL;
char *collproviderstr = NULL;
bool collisdeterministic = true;
int collencoding = 0;
char collprovider = 0;
char *collcollate;
char *collctype;
bool collisdeterministic;
int collencoding;
char collprovider;
char *collversion = NULL;
Oid newoid;
ObjectAddress address;
@ -167,65 +166,71 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("collation \"default\" cannot be copied")));
}
if (localeEl)
else
{
collcollate = defGetString(localeEl);
collctype = defGetString(localeEl);
}
char *collproviderstr = NULL;
if (lccollateEl)
collcollate = defGetString(lccollateEl);
collcollate = NULL;
collctype = NULL;
if (lcctypeEl)
collctype = defGetString(lcctypeEl);
if (localeEl)
{
collcollate = defGetString(localeEl);
collctype = defGetString(localeEl);
}
if (providerEl)
collproviderstr = defGetString(providerEl);
if (lccollateEl)
collcollate = defGetString(lccollateEl);
if (deterministicEl)
collisdeterministic = defGetBoolean(deterministicEl);
if (lcctypeEl)
collctype = defGetString(lcctypeEl);
if (versionEl)
collversion = defGetString(versionEl);
if (providerEl)
collproviderstr = defGetString(providerEl);
if (collproviderstr)
{
if (pg_strcasecmp(collproviderstr, "icu") == 0)
collprovider = COLLPROVIDER_ICU;
else if (pg_strcasecmp(collproviderstr, "libc") == 0)
collprovider = COLLPROVIDER_LIBC;
if (deterministicEl)
collisdeterministic = defGetBoolean(deterministicEl);
else
collisdeterministic = true;
if (versionEl)
collversion = defGetString(versionEl);
if (collproviderstr)
{
if (pg_strcasecmp(collproviderstr, "icu") == 0)
collprovider = COLLPROVIDER_ICU;
else if (pg_strcasecmp(collproviderstr, "libc") == 0)
collprovider = COLLPROVIDER_LIBC;
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("unrecognized collation provider: %s",
collproviderstr)));
}
else
collprovider = COLLPROVIDER_LIBC;
if (!collcollate)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("unrecognized collation provider: %s",
collproviderstr)));
}
else if (!fromEl)
collprovider = COLLPROVIDER_LIBC;
errmsg("parameter \"lc_collate\" must be specified")));
if (!collcollate)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("parameter \"lc_collate\" must be specified")));
if (!collctype)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("parameter \"lc_ctype\" must be specified")));
if (!collctype)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("parameter \"lc_ctype\" must be specified")));
/*
* Nondeterministic collations are currently only supported with ICU
* because that's the only case where it can actually make a difference.
* So we can save writing the code for the other providers.
*/
if (!collisdeterministic && collprovider != COLLPROVIDER_ICU)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("nondeterministic collations not supported with this provider")));
/*
* Nondeterministic collations are currently only supported with ICU
* because that's the only case where it can actually make a difference.
* So we can save writing the code for the other providers.
*/
if (!collisdeterministic && collprovider != COLLPROVIDER_ICU)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("nondeterministic collations not supported with this provider")));
if (!fromEl)
{
if (collprovider == COLLPROVIDER_ICU)
{
#ifdef USE_ICU