mirror of
https://github.com/FirebirdSQL/firebird.git
synced 2025-01-27 20:03:03 +01:00
139331c7e3
plain new to FB_NEW, making allocated with it blocks tagged with file/line. Make related code slightly better readable.
146 lines
3.1 KiB
C++
146 lines
3.1 KiB
C++
/*
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* PROGRAM: Firebird status vector support.
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* MODULE: DynamicStrings.cpp
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* DESCRIPTION: Dynamically store strings in status vector.
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*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Alex Peshkov
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* for the Firebird Open Source RDBMS project.
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*
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* Copyright (c) 2015 Alex Peshkov <peshkoff at mail dot ru>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*
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*
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*/
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#include "firebird.h"
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#include "DynamicStrings.h"
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#include "utils_proto.h"
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#include "gen/iberror.h"
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#include "classes/alloc.h"
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#include <string.h>
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namespace Firebird {
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unsigned makeDynamicStrings(unsigned length, ISC_STATUS* const dst, const ISC_STATUS* const src) throw(BadAlloc)
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{
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const ISC_STATUS* end = &src[length];
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// allocate space for strings
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size_t len = 0;
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for (const ISC_STATUS* from = src; from < end; ++from)
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{
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const ISC_STATUS type = *from++;
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if (from == end || type == isc_arg_end)
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{
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end = from - 1;
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break;
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}
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switch (type)
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{
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case isc_arg_cstring:
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if (from + 1 >= end)
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{
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end = from - 1;
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break;
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}
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len += *from++;
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len++;
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break;
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case isc_arg_string:
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case isc_arg_interpreted:
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case isc_arg_sql_state:
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len += strlen(reinterpret_cast<const char*>(*from));
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len++;
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break;
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}
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}
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char* string = len ? FB_NEW_POOL(*getDefaultMemoryPool()) char[len] : NULL;
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ISC_STATUS* to = dst;
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// copy status vector saving strings in local buffer
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for (const ISC_STATUS* from = src; from < end; ++from)
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{
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const ISC_STATUS type = *from++;
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*to++ = type == isc_arg_cstring ? isc_arg_string : type;
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switch (type)
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{
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case isc_arg_cstring:
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fb_assert(string);
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*to++ = (ISC_STATUS)(IPTR) string;
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memcpy(string, reinterpret_cast<const char*>(from[1]), from[0]);
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string += *from++;
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*string++ = '\0';
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break;
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case isc_arg_string:
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case isc_arg_interpreted:
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case isc_arg_sql_state:
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fb_assert(string);
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*to++ = (ISC_STATUS)(IPTR) string;
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strcpy(string, reinterpret_cast<const char*>(*from));
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string += strlen(string);
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string++;
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break;
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default:
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*to++ = *from;
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break;
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}
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}
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*to++ = isc_arg_end;
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return (to - dst) - 1;
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}
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char* findDynamicStrings(unsigned length, ISC_STATUS* ptr) throw()
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{
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while (length--)
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{
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const ISC_STATUS type = *ptr++;
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if (type == isc_arg_end)
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break;
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switch (type)
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{
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case isc_arg_cstring:
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fb_assert(false); // CVC: according to the new logic, this case cannot happen
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ptr++;
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case isc_arg_string:
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case isc_arg_interpreted:
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case isc_arg_sql_state:
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return reinterpret_cast<char*>(*ptr);
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default:
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ptr++;
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break;
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}
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}
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return NULL;
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}
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} // namespace Firebird
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