diff options
Diffstat (limited to 'src/backend/utils/adt/varlena.c')
| -rw-r--r-- | src/backend/utils/adt/varlena.c | 214 |
1 files changed, 107 insertions, 107 deletions
diff --git a/src/backend/utils/adt/varlena.c b/src/backend/utils/adt/varlena.c index dcd2b7ff42c..07ba4dc6848 100644 --- a/src/backend/utils/adt/varlena.c +++ b/src/backend/utils/adt/varlena.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.135 2005/09/24 17:53:16 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.136 2005/10/15 02:49:30 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -147,8 +147,7 @@ byteain(PG_FUNCTION_ARGS) else { /* - * We should never get here. The first pass should not allow - * it. + * We should never get here. The first pass should not allow it. */ ereport(ERROR, (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION), @@ -550,8 +549,8 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) { S1 = Max(S, 1); - if (length_not_specified) /* special case - get length to - * end of string */ + if (length_not_specified) /* special case - get length to end of + * string */ L1 = -1; else { @@ -559,18 +558,18 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) int E = S + length; /* - * A negative value for L is the only way for the end position - * to be before the start. SQL99 says to throw an error. + * A negative value for L is the only way for the end position to + * be before the start. SQL99 says to throw an error. */ if (E < S) ereport(ERROR, (errcode(ERRCODE_SUBSTRING_ERROR), - errmsg("negative substring length not allowed"))); + errmsg("negative substring length not allowed"))); /* - * A zero or negative value for the end position can happen if - * the start was negative or one. SQL99 says to return a - * zero-length string. + * A zero or negative value for the end position can happen if the + * start was negative or one. SQL99 says to return a zero-length + * string. */ if (E < 1) return PG_STR_GET_TEXT(""); @@ -579,9 +578,9 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) } /* - * If the start position is past the end of the string, SQL99 says - * to return a zero-length string -- PG_GETARG_TEXT_P_SLICE() will - * do that for us. Convert to zero-based starting position + * If the start position is past the end of the string, SQL99 says to + * return a zero-length string -- PG_GETARG_TEXT_P_SLICE() will do + * that for us. Convert to zero-based starting position */ return DatumGetTextPSlice(str, S1 - 1, L1); } @@ -589,8 +588,8 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) { /* * When encoding max length is > 1, we can't get LC without - * detoasting, so we'll grab a conservatively large slice now and - * go back later to do the right thing + * detoasting, so we'll grab a conservatively large slice now and go + * back later to do the right thing */ int32 slice_start; int32 slice_size; @@ -603,38 +602,38 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) text *ret; /* - * if S is past the end of the string, the tuple toaster will - * return a zero-length string to us + * if S is past the end of the string, the tuple toaster will return a + * zero-length string to us */ S1 = Max(S, 1); /* - * We need to start at position zero because there is no way to - * know in advance which byte offset corresponds to the supplied - * start position. + * We need to start at position zero because there is no way to know + * in advance which byte offset corresponds to the supplied start + * position. */ slice_start = 0; - if (length_not_specified) /* special case - get length to - * end of string */ + if (length_not_specified) /* special case - get length to end of + * string */ slice_size = L1 = -1; else { int E = S + length; /* - * A negative value for L is the only way for the end position - * to be before the start. SQL99 says to throw an error. + * A negative value for L is the only way for the end position to + * be before the start. SQL99 says to throw an error. */ if (E < S) ereport(ERROR, (errcode(ERRCODE_SUBSTRING_ERROR), - errmsg("negative substring length not allowed"))); + errmsg("negative substring length not allowed"))); /* - * A zero or negative value for the end position can happen if - * the start was negative or one. SQL99 says to return a - * zero-length string. + * A zero or negative value for the end position can happen if the + * start was negative or one. SQL99 says to return a zero-length + * string. */ if (E < 1) return PG_STR_GET_TEXT(""); @@ -646,9 +645,8 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) L1 = E - S1; /* - * Total slice size in bytes can't be any longer than the - * start position plus substring length times the encoding max - * length. + * Total slice size in bytes can't be any longer than the start + * position plus substring length times the encoding max length. */ slice_size = (S1 + L1) * eml; } @@ -662,16 +660,15 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) slice_strlen = pg_mbstrlen_with_len(VARDATA(slice), VARSIZE(slice) - VARHDRSZ); /* - * Check that the start position wasn't > slice_strlen. If so, - * SQL99 says to return a zero-length string. + * Check that the start position wasn't > slice_strlen. If so, SQL99 + * says to return a zero-length string. */ if (S1 > slice_strlen) return PG_STR_GET_TEXT(""); /* - * Adjust L1 and E1 now that we know the slice string length. - * Again remember that S1 is one based, and slice_start is zero - * based. + * Adjust L1 and E1 now that we know the slice string length. Again + * remember that S1 is one based, and slice_start is zero based. */ if (L1 > -1) E1 = Min(S1 + L1, slice_start + 1 + slice_strlen); @@ -679,8 +676,7 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified) E1 = slice_start + 1 + slice_strlen; /* - * Find the start position in the slice; remember S1 is not zero - * based + * Find the start position in the slice; remember S1 is not zero based */ p = VARDATA(slice); for (i = 0; i < S1 - 1; i++) @@ -834,11 +830,10 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) int result; /* - * Unfortunately, there is no strncoll(), so in the non-C locale case - * we have to do some memory copying. This turns out to be - * significantly slower, so we optimize the case where LC_COLLATE is - * C. We also try to optimize relatively-short strings by avoiding - * palloc/pfree overhead. + * Unfortunately, there is no strncoll(), so in the non-C locale case we + * have to do some memory copying. This turns out to be significantly + * slower, so we optimize the case where LC_COLLATE is C. We also try to + * optimize relatively-short strings by avoiding palloc/pfree overhead. */ if (lc_collate_is_c()) { @@ -859,11 +854,11 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) /* Win32 does not have UTF-8, so we need to map to UTF-16 */ if (GetDatabaseEncoding() == PG_UTF8) { - int a1len; - int a2len; - int r; + int a1len; + int a2len; + int r; - if (len1 >= STACKBUFLEN/2) + if (len1 >= STACKBUFLEN / 2) { a1len = len1 * 2 + 2; a1p = palloc(a1len); @@ -873,7 +868,7 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) a1len = STACKBUFLEN; a1p = a1buf; } - if (len2 >= STACKBUFLEN/2) + if (len2 >= STACKBUFLEN / 2) { a2len = len2 * 2 + 2; a2p = palloc(a2len); @@ -890,7 +885,7 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) else { r = MultiByteToWideChar(CP_UTF8, 0, arg1, len1, - (LPWSTR) a1p, a1len/2); + (LPWSTR) a1p, a1len / 2); if (!r) ereport(ERROR, (errmsg("could not convert string to UTF16: %lu", @@ -903,7 +898,7 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) else { r = MultiByteToWideChar(CP_UTF8, 0, arg2, len2, - (LPWSTR) a2p, a2len/2); + (LPWSTR) a2p, a2len / 2); if (!r) ereport(ERROR, (errmsg("could not convert string to UTF16: %lu", @@ -913,7 +908,8 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) errno = 0; result = wcscoll((LPWSTR) a1p, (LPWSTR) a2p); - if (result == 2147483647) /* _NLSCMPERROR; missing from mingw headers */ + if (result == 2147483647) /* _NLSCMPERROR; missing from mingw + * headers */ ereport(ERROR, (errmsg("could not compare unicode strings: %d", errno))); @@ -925,7 +921,7 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2) return result; } -#endif /* WIN32 */ +#endif /* WIN32 */ if (len1 >= STACKBUFLEN) a1p = (char *) palloc(len1 + 1); @@ -1349,9 +1345,8 @@ bytea_substr(PG_FUNCTION_ARGS) if (fcinfo->nargs == 2) { /* - * Not passed a length - PG_GETARG_BYTEA_P_SLICE() grabs - * everything to the end of the string if we pass it a negative - * value for length. + * Not passed a length - PG_GETARG_BYTEA_P_SLICE() grabs everything to + * the end of the string if we pass it a negative value for length. */ L1 = -1; } @@ -1361,8 +1356,8 @@ bytea_substr(PG_FUNCTION_ARGS) int E = S + PG_GETARG_INT32(2); /* - * A negative value for L is the only way for the end position to - * be before the start. SQL99 says to throw an error. + * A negative value for L is the only way for the end position to be + * before the start. SQL99 says to throw an error. */ if (E < S) ereport(ERROR, @@ -1382,8 +1377,8 @@ bytea_substr(PG_FUNCTION_ARGS) /* * If the start position is past the end of the string, SQL99 says to - * return a zero-length string -- PG_GETARG_TEXT_P_SLICE() will do - * that for us. Convert to zero-based starting position + * return a zero-length string -- PG_GETARG_TEXT_P_SLICE() will do that + * for us. Convert to zero-based starting position */ PG_RETURN_BYTEA_P(PG_GETARG_BYTEA_P_SLICE(0, S1 - 1, L1)); } @@ -1686,7 +1681,7 @@ textToQualifiedNameList(text *textval) /* Convert to C string (handles possible detoasting). */ /* Note we rely on being able to modify rawname below. */ rawname = DatumGetCString(DirectFunctionCall1(textout, - PointerGetDatum(textval))); + PointerGetDatum(textval))); if (!SplitIdentifierString(rawname, '.', &namelist)) ereport(ERROR, @@ -1788,14 +1783,13 @@ SplitIdentifierString(char *rawstring, char separator, return false; /* empty unquoted name not allowed */ /* - * Downcase the identifier, using same code as main lexer - * does. + * Downcase the identifier, using same code as main lexer does. * * XXX because we want to overwrite the input in-place, we cannot - * support a downcasing transformation that increases the - * string length. This is not a problem given the current - * implementation of downcase_truncate_identifier, but we'll - * probably have to do something about this someday. + * support a downcasing transformation that increases the string + * length. This is not a problem given the current implementation + * of downcase_truncate_identifier, but we'll probably have to do + * something about this someday. */ len = endp - curname; downname = downcase_truncate_identifier(curname, len, false); @@ -2083,12 +2077,14 @@ check_replace_text_has_escape_char(const text *replace_text) if (pg_database_encoding_max_length() == 1) { for (; p < p_end; p++) - if (*p == '\\') return true; + if (*p == '\\') + return true; } else { for (; p < p_end; p += pg_mblen(p)) - if (*p == '\\') return true; + if (*p == '\\') + return true; } return false; @@ -2100,7 +2096,7 @@ check_replace_text_has_escape_char(const text *replace_text) */ static void appendStringInfoRegexpSubstr(StringInfo str, text *replace_text, - regmatch_t *pmatch, text *src_text) + regmatch_t *pmatch, text *src_text) { const char *p = VARDATA(replace_text); const char *p_end = p + (VARSIZE(replace_text) - VARHDRSZ); @@ -2129,19 +2125,20 @@ appendStringInfoRegexpSubstr(StringInfo str, text *replace_text, } /* - * Copy the text when there is a text in the left of escape char - * or escape char is not found. + * Copy the text when there is a text in the left of escape char or + * escape char is not found. */ if (ch_cnt) { - text *append_text = text_substring(PointerGetDatum(replace_text), - substr_start, ch_cnt, false); + text *append_text = text_substring(PointerGetDatum(replace_text), + substr_start, ch_cnt, false); + appendStringInfoText(str, append_text); pfree(append_text); } substr_start += ch_cnt + 1; - if (p >= p_end) /* When escape char is not found. */ + if (p >= p_end) /* When escape char is not found. */ break; /* See the next character of escape char. */ @@ -2151,7 +2148,8 @@ appendStringInfoRegexpSubstr(StringInfo str, text *replace_text, if (*p >= '1' && *p <= '9') { /* Use the back reference of regexp. */ - int idx = *p - '0'; + int idx = *p - '0'; + so = pmatch[idx].rm_so; eo = pmatch[idx].rm_eo; p++; @@ -2169,8 +2167,9 @@ appendStringInfoRegexpSubstr(StringInfo str, text *replace_text, if (so != -1 && eo != -1) { /* Copy the text that is back reference of regexp. */ - text *append_text = text_substring(PointerGetDatum(src_text), - so + 1, (eo - so), false); + text *append_text = text_substring(PointerGetDatum(src_text), + so + 1, (eo - so), false); + appendStringInfoText(str, append_text); pfree(append_text); } @@ -2189,9 +2188,9 @@ replace_text_regexp(PG_FUNCTION_ARGS) text *ret_text; text *src_text = PG_GETARG_TEXT_P(0); int src_text_len = VARSIZE(src_text) - VARHDRSZ; - regex_t *re = (regex_t *)PG_GETARG_POINTER(1); + regex_t *re = (regex_t *) PG_GETARG_POINTER(1); text *replace_text = PG_GETARG_TEXT_P(2); - bool global = PG_GETARG_BOOL(3); + bool global = PG_GETARG_BOOL(3); StringInfo str = makeStringInfo(); int regexec_result; regmatch_t pmatch[REGEXP_REPLACE_BACKREF_CNT]; @@ -2214,33 +2213,34 @@ replace_text_regexp(PG_FUNCTION_ARGS) data, data_len, search_start, - NULL, /* no details */ + NULL, /* no details */ REGEXP_REPLACE_BACKREF_CNT, pmatch, 0); if (regexec_result != REG_OKAY && regexec_result != REG_NOMATCH) { - char errMsg[100]; + char errMsg[100]; /* re failed??? */ pg_regerror(regexec_result, re, errMsg, sizeof(errMsg)); ereport(ERROR, - (errcode(ERRCODE_INVALID_REGULAR_EXPRESSION), - errmsg("regular expression failed: %s", errMsg))); + (errcode(ERRCODE_INVALID_REGULAR_EXPRESSION), + errmsg("regular expression failed: %s", errMsg))); } if (regexec_result == REG_NOMATCH) break; - /* - * Copy the text when there is a text in the left of matched position. - */ + /* + * Copy the text when there is a text in the left of matched position. + */ if (pmatch[0].rm_so - data_pos > 0) { - text *left_text = text_substring(PointerGetDatum(src_text), - data_pos + 1, - pmatch[0].rm_so - data_pos, false); + text *left_text = text_substring(PointerGetDatum(src_text), + data_pos + 1, + pmatch[0].rm_so - data_pos, false); + appendStringInfoText(str, left_text); pfree(left_text); } @@ -2270,13 +2270,14 @@ replace_text_regexp(PG_FUNCTION_ARGS) } /* - * Copy the text when there is a text at the right of last matched - * or regexp is not matched. + * Copy the text when there is a text at the right of last matched or + * regexp is not matched. */ if (data_pos < data_len) { - text *right_text = text_substring(PointerGetDatum(src_text), - data_pos + 1, -1, true); + text *right_text = text_substring(PointerGetDatum(src_text), + data_pos + 1, -1, true); + appendStringInfoText(str, right_text); pfree(right_text); } @@ -2392,7 +2393,7 @@ text_to_array(PG_FUNCTION_ARGS) */ if (fldsep_len < 1) PG_RETURN_ARRAYTYPE_P(create_singleton_array(fcinfo, TEXTOID, - CStringGetDatum(inputstring), 1)); + CStringGetDatum(inputstring), 1)); /* start with end position holding the initial start position */ end_posn = 0; @@ -2409,17 +2410,17 @@ text_to_array(PG_FUNCTION_ARGS) if (fldnum == 1) { /* - * first element return one element, 1D, array using the - * input string + * first element return one element, 1D, array using the input + * string */ PG_RETURN_ARRAYTYPE_P(create_singleton_array(fcinfo, TEXTOID, - CStringGetDatum(inputstring), 1)); + CStringGetDatum(inputstring), 1)); } else { /* otherwise create array and exit */ PG_RETURN_ARRAYTYPE_P(makeArrayResult(astate, - CurrentMemoryContext)); + CurrentMemoryContext)); } } else if (start_posn == 0) @@ -2439,7 +2440,7 @@ text_to_array(PG_FUNCTION_ARGS) /* interior field requested */ result_text = text_substring(PointerGetDatum(inputstring), start_posn + fldsep_len, - end_posn - start_posn - fldsep_len, + end_posn - start_posn - fldsep_len, false); } @@ -2489,14 +2490,14 @@ array_to_text(PG_FUNCTION_ARGS) /* * We arrange to look up info about element type, including its output - * conversion proc, only once per series of calls, assuming the - * element type doesn't change underneath us. + * conversion proc, only once per series of calls, assuming the element + * type doesn't change underneath us. */ my_extra = (ArrayMetaState *) fcinfo->flinfo->fn_extra; if (my_extra == NULL) { fcinfo->flinfo->fn_extra = MemoryContextAlloc(fcinfo->flinfo->fn_mcxt, - sizeof(ArrayMetaState)); + sizeof(ArrayMetaState)); my_extra = (ArrayMetaState *) fcinfo->flinfo->fn_extra; my_extra->element_type = InvalidOid; } @@ -2504,8 +2505,7 @@ array_to_text(PG_FUNCTION_ARGS) if (my_extra->element_type != element_type) { /* - * Get info about element type, including its output conversion - * proc + * Get info about element type, including its output conversion proc */ get_type_io_data(element_type, IOFunc_output, &my_extra->typlen, &my_extra->typbyval, @@ -2606,7 +2606,7 @@ md5_text(PG_FUNCTION_ARGS) { text *in_text = PG_GETARG_TEXT_P(0); size_t len; - char hexsum[MD5_HASH_LEN + 1]; + char hexsum[MD5_HASH_LEN + 1]; text *result_text; /* Calculate the length of the buffer using varlena metadata */ @@ -2661,7 +2661,7 @@ pg_column_size(PG_FUNCTION_ARGS) if (fcinfo->flinfo->fn_extra == NULL) { /* Lookup the datatype of the supplied argument */ - Oid argtypeid = get_fn_expr_argtype(fcinfo->flinfo, 0); + Oid argtypeid = get_fn_expr_argtype(fcinfo->flinfo, 0); typlen = get_typlen(argtypeid); if (typlen == 0) /* should not happen */ |