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Diffstat (limited to 'Sockets/MemFile.cpp')
| -rw-r--r-- | Sockets/MemFile.cpp | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/Sockets/MemFile.cpp b/Sockets/MemFile.cpp deleted file mode 100644 index edbe619..0000000 --- a/Sockets/MemFile.cpp +++ /dev/null @@ -1,288 +0,0 @@ -/** \file MemFile.cpp - ** \date 2005-04-25 - ** \author grymse@alhem.net -**/ -/* -Copyright (C) 2004-2007 Anders Hedstrom - -This library is made available under the terms of the GNU GPL. - -If you would like to use this library in a closed-source application, -a separate license agreement is available. For information about -the closed-source license agreement for the C++ sockets library, -please visit http://www.alhem.net/Sockets/license.html and/or -email license@alhem.net. - -This program is free software; you can redistribute it and/or -modify it under the terms of the GNU General Public License -as published by the Free Software Foundation; either version 2 -of the License, or (at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -*/ -#ifdef _MSC_VER -#pragma warning(disable:4786) -#endif -#include <stdio.h> -#include <stdarg.h> - -#include "MemFile.h" - - -#ifdef SOCKETS_NAMESPACE -namespace SOCKETS_NAMESPACE { -#endif - - -std::map<std::string,MemFile::block_t *> MemFile::m_files; - - -MemFile::MemFile() -:m_temporary(true) -,m_base(new block_t) -,m_current_read(m_base) -,m_current_write(m_base) -,m_current_write_nr(0) -,m_read_ptr(0) -,m_write_ptr(0) -,m_b_read_caused_eof(false) -{ -} - - -MemFile::MemFile(const std::string& path) -:m_path(path) -,m_temporary(false) -,m_base(m_files[path]) -,m_current_read(NULL) -,m_current_write(NULL) -,m_current_write_nr(0) -,m_read_ptr(0) -,m_write_ptr(0) -,m_b_read_caused_eof(false) -{ - if (!m_base) - { - m_base = new block_t; - m_files[path] = m_base; - } - m_current_read = m_base; - m_current_write = m_base; -} - - -MemFile::~MemFile() -{ - while (m_base && m_temporary) - { - block_t *p = m_base; - m_base = p -> next; - delete p; - } -} - - -bool MemFile::fopen(const std::string& path, const std::string& mode) -{ - return true; -} - - -void MemFile::fclose() -{ -} - - -size_t MemFile::fread(char *ptr, size_t size, size_t nmemb) const -{ - size_t p = m_read_ptr % BLOCKSIZE; - size_t sz = size * nmemb; - size_t available = m_write_ptr - m_read_ptr; - if (sz > available) // read beyond eof - { - sz = available; - m_b_read_caused_eof = true; - } - if (!sz) - { - return 0; - } - if (p + sz < BLOCKSIZE) - { - memcpy(ptr, m_current_read -> data + p, sz); - m_read_ptr += sz; - } - else - { - size_t sz1 = BLOCKSIZE - p; - size_t sz2 = sz - sz1; - memcpy(ptr, m_current_read -> data + p, sz1); - m_read_ptr += sz1; - while (sz2 > BLOCKSIZE) - { - if (m_current_read -> next) - { - m_current_read = m_current_read -> next; - memcpy(ptr + sz1, m_current_read -> data, BLOCKSIZE); - m_read_ptr += BLOCKSIZE; - sz1 += BLOCKSIZE; - sz2 -= BLOCKSIZE; - } - else - { - return sz1; - } - } - if (m_current_read -> next) - { - m_current_read = m_current_read -> next; - memcpy(ptr + sz1, m_current_read -> data, sz2); - m_read_ptr += sz2; - } - else - { - return sz1; - } - } - return sz; -} - - -size_t MemFile::fwrite(const char *ptr, size_t size, size_t nmemb) -{ - size_t p = m_write_ptr % BLOCKSIZE; - int nr = (int)m_write_ptr / BLOCKSIZE; - size_t sz = size * nmemb; - if (m_current_write_nr < nr) - { - block_t *next = new block_t; - m_current_write -> next = next; - m_current_write = next; - m_current_write_nr++; - } - if (p + sz <= BLOCKSIZE) - { - memcpy(m_current_write -> data + p, ptr, sz); - m_write_ptr += sz; - } - else - { - size_t sz1 = BLOCKSIZE - p; // size left - size_t sz2 = sz - sz1; - memcpy(m_current_write -> data + p, ptr, sz1); - m_write_ptr += sz1; - while (sz2 > BLOCKSIZE) - { - if (m_current_write -> next) - { - m_current_write = m_current_write -> next; - m_current_write_nr++; - } - else - { - block_t *next = new block_t; - m_current_write -> next = next; - m_current_write = next; - m_current_write_nr++; - } - memcpy(m_current_write -> data, ptr + sz1, BLOCKSIZE); - m_write_ptr += BLOCKSIZE; - sz1 += BLOCKSIZE; - sz2 -= BLOCKSIZE; - } - if (m_current_write -> next) - { - m_current_write = m_current_write -> next; - m_current_write_nr++; - } - else - { - block_t *next = new block_t; - m_current_write -> next = next; - m_current_write = next; - m_current_write_nr++; - } - memcpy(m_current_write -> data, ptr + sz1, sz2); - m_write_ptr += sz2; - } - return sz; -} - - - -char *MemFile::fgets(char *s, int size) const -{ - int n = 0; - while (n < size - 1 && !eof()) - { - char c; - size_t sz = fread(&c, 1, 1); - if (sz) - { - if (c == 10) - { - s[n] = 0; - return s; - } - s[n++] = c; - } - } - s[n] = 0; - return s; -} - - -void MemFile::fprintf(const char *format, ...) -{ - va_list ap; - char tmp[BLOCKSIZE]; - va_start(ap, format); -#ifdef _WIN32 - vsprintf(tmp, format, ap); -#else - vsnprintf(tmp, BLOCKSIZE - 1, format, ap); -#endif - va_end(ap); - fwrite(tmp, 1, strlen(tmp)); -} - - -off_t MemFile::size() const -{ - return (off_t)m_write_ptr; -} - - -bool MemFile::eof() const -{ - return m_b_read_caused_eof; //(m_read_ptr < m_write_ptr) ? false : true; -} - - -void MemFile::reset_read() const -{ - m_read_ptr = 0; - m_current_read = m_base; -} - - -void MemFile::reset_write() -{ - m_write_ptr = 0; - m_current_write = m_base; - m_current_write_nr = 0; -} - - -#ifdef SOCKETS_NAMESPACE -} -#endif - - |