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16c17ab34b
All were for compatibility with the classic C++Builder compiler (dynamic size arrays, snprintf, signed/unsigned comparison) Source commit: 5f37a025339cd46c76c6f54def71a27187d7cce1
114 lines
5.1 KiB
C
114 lines
5.1 KiB
C
/** **************************************************************************
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* string_buffer.h
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*
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* Copyright 2008 Bryan Ischo <bryan@ischo.com>
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*
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* This file is part of libs3.
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*
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* libs3 is free software: you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation, version 3 or above of the License. You can also
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* redistribute and/or modify it under the terms of the GNU General Public
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* License, version 2 or above of the License.
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of this library and its programs with the
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* OpenSSL library, and distribute linked combinations including the two.
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*
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* libs3 is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with libs3, in a file named COPYING. If not, see
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* <https://www.gnu.org/licenses/>.
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*
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* You should also have received a copy of the GNU General Public License
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* version 2 along with libs3, in a file named COPYING-GPLv2. If not, see
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* <https://www.gnu.org/licenses/>.
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*
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************************************************************************** **/
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#ifndef STRING_BUFFER_H
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#define STRING_BUFFER_H
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#include <stdio.h>
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// Declare a string_buffer with the given name of the given maximum length
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#define string_buffer(name, len) \
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char name[len + 1]; \
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int name##Len
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// Initialize a string_buffer
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#define string_buffer_initialize(sb) \
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do { \
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sb[0] = 0; \
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sb##Len = 0; \
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} while (0)
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// Append [len] bytes of [str] to [sb], setting [all_fit] to 1 if it fit, and
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// 0 if it did not
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#define string_buffer_append(sb, str, len, all_fit) \
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do { \
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sb##Len += snprintf(&(sb[sb##Len]), sizeof(sb) - sb##Len - 1, \
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"%.*s", (int) (len), str); \
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if (sb##Len > (int) (sizeof(sb) - 1)) { \
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sb##Len = sizeof(sb) - 1; \
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all_fit = 0; \
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} \
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else { \
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all_fit = 1; \
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} \
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} while (0)
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// Declare a string multibuffer with the given name of the given maximum size
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#define string_multibuffer(name, size) \
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char name[size]; \
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int name##Size
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// Initialize a string_multibuffer
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#define string_multibuffer_initialize(smb) \
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do { \
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smb##Size = 0; \
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} while (0)
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// Evaluates to the current string within the string_multibuffer
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#define string_multibuffer_current(smb) \
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&(smb[smb##Size])
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// Adds a new string to the string_multibuffer
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#define string_multibuffer_add(smb, str, len, all_fit) \
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do { \
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smb##Size += (snprintf(&(smb[smb##Size]), \
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sizeof(smb) - smb##Size, \
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"%.*s", (int) (len), str) + 1); \
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if (smb##Size > (int) sizeof(smb)) { \
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smb##Size = sizeof(smb); \
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all_fit = 0; \
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} \
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else { \
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all_fit = 1; \
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} \
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} while (0)
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// Appends to the current string in the string_multibuffer. There must be a
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// current string, meaning that string_multibuffer_add must have been called
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// at least once for this string_multibuffer.
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#define string_multibuffer_append(smb, str, len, all_fit) \
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do { \
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smb##Size--; \
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string_multibuffer_add(smb, str, len, all_fit); \
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} while (0)
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#endif /* STRING_BUFFER_H */
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