summaryrefslogtreecommitdiffstats
path: root/tderadio3/src/fileringbuffer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tderadio3/src/fileringbuffer.cpp')
-rw-r--r--tderadio3/src/fileringbuffer.cpp252
1 files changed, 0 insertions, 252 deletions
diff --git a/tderadio3/src/fileringbuffer.cpp b/tderadio3/src/fileringbuffer.cpp
deleted file mode 100644
index 5cca0c7..0000000
--- a/tderadio3/src/fileringbuffer.cpp
+++ /dev/null
@@ -1,252 +0,0 @@
-/***************************************************************************
- ringbuffer.cpp - description
- -------------------
- begin : Sun March 21 2004
- copyright : (C) 2004 by Martin Witte
- email : witte@kawo1.rwth-aachen.de
- ***************************************************************************/
-
-/***************************************************************************
- * *
- * 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. *
- * *
- ***************************************************************************/
-
-#include "include/fileringbuffer.h"
-
-#include <tqstring.h>
-#include <unistd.h>
-#include <tdelocale.h>
-
-FileRingBuffer::FileRingBuffer(const TQString &filename, TQ_UINT64 max_size)
-{
- m_BaseFileName = filename;
- m_FileIdx = 0;
- m_FileName = m_BaseFileName + "_" + TQString::number(++m_FileIdx);
- m_File = fopen(m_FileName.ascii(), "w+");
- m_MaxSize = max_size;
- m_RealSize = 0;
- m_FillSize = 0;
- m_Start = 0;
- m_error = m_File == NULL;
- m_errorString = m_File ? TQString() : i18n("cannot open buffer file %1").arg(filename);
-}
-
-
-FileRingBuffer::~FileRingBuffer()
-{
- if (m_File) {
- fclose (m_File);
- unlink (m_FileName.ascii());
- }
- m_File = NULL;
- m_FileName = TQString();
- m_MaxSize = 0;
- m_RealSize = 0;
- m_FillSize = 0;
- m_Start = 0;
- m_error = false;
- m_errorString = TQString();
-}
-
-
-bool FileRingBuffer::resize(const TQString &filename, TQ_UINT64 new_max_size)
-{
- if (filename != m_BaseFileName) {
- clear();
- if (m_File) {
- fclose (m_File);
- unlink (m_FileName.ascii());
- }
- m_BaseFileName = filename;
- m_FileName = m_BaseFileName + "_" + TQString::number(++m_FileIdx);
- m_File = fopen(m_FileName.ascii(), "w+");
- m_error = m_File == NULL;
- m_errorString = m_File ? TQString() : i18n("cannot open buffer file %1").arg(filename);
- }
-
- if (new_max_size >= m_RealSize) {
- m_MaxSize = new_max_size;
- }
- else if (m_Start + m_FillSize < m_RealSize && new_max_size > m_Start + m_FillSize) {
- ftruncate(fileno(m_File), new_max_size);
- m_MaxSize = new_max_size;
- }
- else if (new_max_size >= m_FillSize) {
- const size_t buffer_size = 65536;
- char buffer[buffer_size];
-
- TQString tmp_file_name = m_BaseFileName + "_" + TQString::number(++m_FileIdx);
- FILE *tmp_file = fopen (tmp_file_name.ascii(), "w+");
- TQ_UINT64 newFill = 0;
- if (tmp_file) {
- while (!m_error && m_FillSize > 0) {
- int tmp_size = takeData(buffer, buffer_size);
- if (tmp_size > 0) {
- if (fwrite (buffer, tmp_size, 1, tmp_file) > 0) {
- newFill += tmp_size;
- } else {
- m_error = true;
- m_errorString += i18n("FileRingbuffer::resize: Writing to tmpfile %1 failed. ").arg(tmp_file_name);
- }
- }
- }
- } else {
- m_error = true;
- m_errorString += i18n("FileRingbuffer::resize: Opening tmpfile %1 failed. ").arg(tmp_file_name);
- }
-
- if (!m_error) {
- fclose (m_File);
- m_FileName = tmp_file_name;
- m_File = tmp_file;
- m_FillSize = newFill;
- m_Start = 0;
- m_MaxSize = new_max_size;
- m_RealSize = newFill;
- }
- return true;
- }
- return false;
-}
-
-
-size_t FileRingBuffer::addData (const char *src, size_t size)
-{
- size_t written = 0;
- if (m_Start + m_FillSize <= m_RealSize) {
- TQ_UINT64 rest = m_MaxSize - (m_Start + m_FillSize);
- if (rest > size)
- rest = size;
- fseek(m_File, m_Start + m_FillSize, SEEK_SET);
- if (rest > 0 && fwrite(src, rest, 1, m_File) <= 0) {
- m_error = true;
- m_errorString += i18n("FileRingBuffer::addData: failed writing data to file %1.").arg(m_FileName);
- } else {
- m_FillSize += rest;
- if (m_Start + m_FillSize > m_RealSize)
- m_RealSize = m_Start + m_FillSize;
- written += rest;
- size -= rest;
- src += rest;
- }
- }
- if (!m_error && size > 0 && m_FillSize < m_RealSize) {
- size_t rest = size;
- if (rest > m_RealSize - m_FillSize)
- rest = m_RealSize - m_FillSize;
-
- fseek(m_File, m_Start + m_FillSize - m_RealSize, SEEK_SET);
- if (fwrite(src, rest, 1, m_File) <= 0) {
- m_error = true;
- m_errorString += i18n("FileRingBuffer::addData: failed writing data to file %1.").arg(m_FileName);
- } else {
- m_FillSize += rest;
- written += rest;
- //fflush(m_File); // debug only
- }
- }
- return written;
-}
-
-
-size_t FileRingBuffer::takeData(char *dst, size_t size)
-{
- size_t read = 0;
- while (!m_error && m_FillSize > 0 && size > 0) {
- size_t n = size;
- if (n > m_FillSize)
- n = m_FillSize;
- if (n > m_RealSize - m_Start)
- n = m_RealSize - m_Start;
- fseek(m_File, m_Start, SEEK_SET);
- if (fread(dst+read, n, 1, m_File) <= 0) {
- m_error = true;
- m_errorString += i18n("FileRingBuffer::takeData: failed reading data to file %1.").arg(m_FileName);
- } else {
- m_FillSize -= n;
- m_Start += n;
- read += n;
- size -= n;
- if (m_Start >= m_RealSize)
- m_Start -= m_RealSize;
- }
-
- }
- return read;
-}
-
-
-TQ_UINT64 FileRingBuffer::getFreeSpace(TQ_UINT64 &size)
-{
- if (m_FillSize == m_RealSize) {
- size = 0;
- return 0;
- }
-
- if (m_Start + m_FillSize >= m_RealSize) {
- size = m_RealSize - m_FillSize;
- return m_Start + m_FillSize - m_RealSize;
- } else {
- size = m_MaxSize - m_Start - m_FillSize;
- return m_Start + m_FillSize;
- }
-}
-
-
-TQ_UINT64 FileRingBuffer::removeFreeSpace(TQ_UINT64 size)
-{
- if (m_FillSize == m_RealSize)
- return 0;
-
- if (m_Start + m_FillSize >= m_RealSize) {
- if (size > m_RealSize - m_FillSize)
- size = m_RealSize - m_FillSize;
- m_FillSize += size;
- return size;
- } else {
- if (m_Start + m_FillSize + size >= m_MaxSize)
- size = m_MaxSize - m_Start - m_FillSize;
- m_FillSize += size;
- return size;
- }
-}
-
-
-TQ_UINT64 FileRingBuffer::getData(TQ_UINT64 &size)
-{
- if (m_Start + m_FillSize >= m_RealSize) {
- size = m_RealSize - m_Start;
- } else {
- size = m_FillSize;
- }
- return m_Start;
-}
-
-
-TQ_UINT64 FileRingBuffer::removeData(TQ_UINT64 size)
-{
- if (size > m_FillSize)
- size = m_FillSize;
- if (m_Start + size >= m_RealSize) {
- m_Start = m_Start + size - m_RealSize;
- } else {
- m_Start += size;
- }
- m_FillSize -= size;
- return size;
-}
-
-
-void FileRingBuffer::clear()
-{
- if (!m_error) {
- ftruncate(fileno(m_File), 0);
- m_Start = 0;
- m_FillSize = 0;
- m_RealSize = 0;
- }
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-08 15:10:57 +0000