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by brian
clean slate |
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/* Copyright (C) 2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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1802.10.2
by Monty Taylor
Update all of the copyright headers to include the correct address. |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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by brian
clean slate |
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1241.9.12
by Monty Taylor
Trims more out of server_includes.h. |
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#include "config.h" |
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#include <cstdlib> |
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1241.9.64
by Monty Taylor
Moved remaining non-public portions of mysys and mystrings to drizzled/internal. |
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#include "drizzled/internal/my_sys.h" |
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by brian
clean slate |
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#include "transparent_file.h" |
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1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
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using namespace drizzled; |
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by brian
clean slate |
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Transparent_file::Transparent_file() : lower_bound(0), buff_size(IO_SIZE) |
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660.1.3
by Eric Herman
removed trailing whitespace with simple script: |
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{
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1241.9.1
by Monty Taylor
Removed global.h. Fixed all the headers. |
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buff= static_cast<unsigned char *>(malloc(buff_size*sizeof(unsigned char))); |
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by brian
clean slate |
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}
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Transparent_file::~Transparent_file() |
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660.1.3
by Eric Herman
removed trailing whitespace with simple script: |
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{
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1241.9.1
by Monty Taylor
Removed global.h. Fixed all the headers. |
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free(buff); |
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by brian
clean slate |
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}
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1241.9.1
by Monty Taylor
Removed global.h. Fixed all the headers. |
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void Transparent_file::init_buff(int filedes_arg) |
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by brian
clean slate |
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{
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filedes= filedes_arg; |
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/* read the beginning of the file */
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lower_bound= 0; |
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656.1.39
by Monty Taylor
Removed my_seek, my_tell, my_fwrite, my_fseek. |
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lseek(filedes, 0, SEEK_SET); |
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by brian
clean slate |
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if (filedes && buff) |
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1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
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upper_bound= internal::my_read(filedes, buff, buff_size, MYF(0)); |
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by brian
clean slate |
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}
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481
by Brian Aker
Remove all of uchar. |
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unsigned char *Transparent_file::ptr() |
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660.1.3
by Eric Herman
removed trailing whitespace with simple script: |
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{
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return buff; |
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by brian
clean slate |
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}
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off_t Transparent_file::start() |
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660.1.3
by Eric Herman
removed trailing whitespace with simple script: |
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{
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return lower_bound; |
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by brian
clean slate |
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}
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off_t Transparent_file::end() |
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660.1.3
by Eric Herman
removed trailing whitespace with simple script: |
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{
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return upper_bound; |
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by brian
clean slate |
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}
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off_t Transparent_file::read_next() |
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{
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size_t bytes_read; |
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/*
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No need to seek here, as the file managed by Transparent_file class
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always points to upper_bound byte
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*/
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1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
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if ((bytes_read= internal::my_read(filedes, buff, buff_size, MYF(0))) == MY_FILE_ERROR) |
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by brian
clean slate |
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return (off_t) -1; |
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/* end of file */
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if (!bytes_read) |
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return (off_t) -1; |
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lower_bound= upper_bound; |
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upper_bound+= bytes_read; |
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return lower_bound; |
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}
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char Transparent_file::get_value(off_t offset) |
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{
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size_t bytes_read; |
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/* check boundaries */
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if ((lower_bound <= offset) && (offset < upper_bound)) |
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return buff[offset - lower_bound]; |
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656.1.39
by Monty Taylor
Removed my_seek, my_tell, my_fwrite, my_fseek. |
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lseek(filedes, offset, SEEK_SET); |
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by brian
clean slate |
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/* read appropriate portion of the file */
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1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
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if ((bytes_read= internal::my_read(filedes, buff, buff_size, |
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by brian
clean slate |
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MYF(0))) == MY_FILE_ERROR) |
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return 0; |
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lower_bound= offset; |
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upper_bound= lower_bound + bytes_read; |
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/* end of file */
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if (upper_bound == offset) |
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return 0; |
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return buff[0]; |
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}
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