124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/*
|
|
* This file Copyright (C) 2013-2014 Mnemosyne LLC
|
|
*
|
|
* It may be used under the GNU GPL versions 2 or 3
|
|
* or any future license endorsed by Mnemosyne LLC.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <string.h> /* strlen () */
|
|
|
|
#include "transmission.h"
|
|
#include "file.h"
|
|
#include "utils.h"
|
|
|
|
bool
|
|
tr_sys_file_read_line (tr_sys_file_t handle,
|
|
char * buffer,
|
|
size_t buffer_size,
|
|
tr_error ** error)
|
|
{
|
|
bool ret = false;
|
|
size_t offset = 0;
|
|
uint64_t bytes_read;
|
|
|
|
assert (handle != TR_BAD_SYS_FILE);
|
|
assert (buffer != NULL);
|
|
assert (buffer_size > 0);
|
|
|
|
while (buffer_size > 0)
|
|
{
|
|
size_t i;
|
|
bool found_eol = false;
|
|
|
|
ret = tr_sys_file_read (handle, buffer + offset, MIN(buffer_size, 1024u),
|
|
&bytes_read, error);
|
|
if (!ret || (offset == 0 && bytes_read == 0))
|
|
{
|
|
ret = false;
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < bytes_read; ++i, ++offset, --buffer_size)
|
|
{
|
|
if (buffer[offset] == '\n')
|
|
{
|
|
found_eol = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found_eol || buffer_size == 0 || bytes_read == 0)
|
|
{
|
|
const int64_t delta = -(int64_t) bytes_read + i + (found_eol ? 1 : 0);
|
|
|
|
if (delta != 0)
|
|
{
|
|
ret = tr_sys_file_seek (handle, delta, TR_SEEK_CUR, NULL, error);
|
|
if (!ret)
|
|
break;
|
|
}
|
|
|
|
if (offset > 0 && buffer[offset - 1] == '\r')
|
|
buffer[offset - 1] = '\0';
|
|
else
|
|
buffer[offset] = '\0';
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool
|
|
tr_sys_file_write_line (tr_sys_file_t handle,
|
|
const char * buffer,
|
|
tr_error ** error)
|
|
{
|
|
bool ret;
|
|
|
|
assert (handle != TR_BAD_SYS_FILE);
|
|
assert (buffer != NULL);
|
|
|
|
ret = tr_sys_file_write (handle, buffer, strlen (buffer), NULL, error);
|
|
|
|
if (ret)
|
|
ret = tr_sys_file_write (handle, TR_NATIVE_EOL_STR, TR_NATIVE_EOL_STR_SIZE,
|
|
NULL, error);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool
|
|
tr_sys_file_write_fmt (tr_sys_file_t handle,
|
|
const char * format,
|
|
tr_error ** error,
|
|
...)
|
|
{
|
|
bool ret = false;
|
|
char * buffer;
|
|
va_list args;
|
|
|
|
assert (handle != TR_BAD_SYS_FILE);
|
|
assert (format != NULL);
|
|
|
|
va_start (args, error);
|
|
buffer = tr_strdup_vprintf (format, args);
|
|
va_end (args);
|
|
|
|
if (buffer != NULL)
|
|
{
|
|
ret = tr_sys_file_write (handle, buffer, strlen (buffer), NULL, error);
|
|
tr_free (buffer);
|
|
}
|
|
else
|
|
{
|
|
tr_error_set_literal (error, 0, "Unable to format message.");
|
|
}
|
|
|
|
return ret;
|
|
}
|