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author | nobody <nobody@localhost> | 2001-06-23 13:14:10 +0800 |
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committer | nobody <nobody@localhost> | 2001-06-23 13:14:10 +0800 |
commit | 2bbe5d3421eefbcac7d9f3e16d3ea09e96a2bc10 (patch) | |
tree | a4eb5e010ba601de261dc3f9da4dd4b86fcc46fe /camel/camel-stream.c | |
parent | 72ca61d74b9942040638b628a6f1358e02d23d42 (diff) | |
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This commit was manufactured by cvs2svn to create tagGNUMERIC_0_66
'GNUMERIC_0_66'.
svn path=/tags/GNUMERIC_0_66/; revision=10420
Diffstat (limited to 'camel/camel-stream.c')
-rw-r--r-- | camel/camel-stream.c | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/camel/camel-stream.c b/camel/camel-stream.c deleted file mode 100644 index a883905e8d..0000000000 --- a/camel/camel-stream.c +++ /dev/null @@ -1,275 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*- */ -/* camel-stream.c : abstract class for a stream */ - -/* - * Author: - * Bertrand Guiheneuf <bertrand@helixcode.com> - * - * Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com) - * - * 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 HAVE_CONFIG_H -#include <config.h> -#endif - -#include <string.h> -#include "camel-stream.h" - -static CamelObjectClass *parent_class = NULL; - -/* Returns the class for a CamelStream */ -#define CS_CLASS(so) CAMEL_STREAM_CLASS(CAMEL_OBJECT_GET_CLASS(so)) - -/* default implementations, do very little */ -static ssize_t stream_read (CamelStream *stream, char *buffer, size_t n) { return 0; } -static ssize_t stream_write (CamelStream *stream, const char *buffer, size_t n) { return n; } -static int stream_close (CamelStream *stream) { return 0; } -static int stream_flush (CamelStream *stream) { return 0; } -static gboolean stream_eos (CamelStream *stream) { return stream->eos; } -static int stream_reset (CamelStream *stream) { return 0; } - -static void -camel_stream_class_init (CamelStreamClass *camel_stream_class) -{ - parent_class = camel_type_get_global_classfuncs( CAMEL_OBJECT_TYPE ); - - /* virtual method definition */ - camel_stream_class->read = stream_read; - camel_stream_class->write = stream_write; - camel_stream_class->close = stream_close; - camel_stream_class->flush = stream_flush; - camel_stream_class->eos = stream_eos; - camel_stream_class->reset = stream_reset; -} - -CamelType -camel_stream_get_type (void) -{ - static CamelType camel_stream_type = CAMEL_INVALID_TYPE; - - if (camel_stream_type == CAMEL_INVALID_TYPE) { - camel_stream_type = camel_type_register( CAMEL_OBJECT_TYPE, - "CamelStream", - sizeof( CamelStream ), - sizeof( CamelStreamClass ), - (CamelObjectClassInitFunc) camel_stream_class_init, - NULL, - NULL, - NULL ); - } - - return camel_stream_type; -} - -/** - * camel_stream_read: - * @stream: a CamelStream. - * @buffer: buffer where bytes pulled from the stream are stored. - * @n: max number of bytes to read. - * - * Read at most @n bytes from the @stream object and stores them - * in the buffer pointed at by @buffer. - * - * Return value: number of bytes actually read, or -1 on error and - * set errno. - **/ -ssize_t -camel_stream_read (CamelStream *stream, char *buffer, size_t n) -{ - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - g_return_val_if_fail (n == 0 || buffer, -1); - - return CS_CLASS (stream)->read (stream, buffer, n); -} - -/** - * camel_stream_write: - * @stream: a CamelStream object. - * @buffer: buffer to write. - * @n: number of bytes to write - * - * Write @n bytes from the buffer pointed at by @buffer into @stream. - * - * Return value: the number of bytes actually written to the stream, - * or -1 on error. - **/ -ssize_t -camel_stream_write (CamelStream *stream, const char *buffer, size_t n) -{ - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - g_return_val_if_fail (n == 0 || buffer, -1); - - return CS_CLASS (stream)->write (stream, buffer, n); -} - -/** - * camel_stream_flush: - * @stream: a CamelStream object - * - * Flushes the contents of the stream to its backing store. Only meaningful - * on writable streams. - * - * Return value: -1 on error. - **/ -int -camel_stream_flush (CamelStream *stream) -{ - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - - return CS_CLASS (stream)->flush (stream); -} - -/** - * camel_stream_close: - * @stream: - * - * Close a stream. - * - * Return value: -1 on error. - **/ -int -camel_stream_close (CamelStream *stream) -{ - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - - return CS_CLASS (stream)->close (stream); -} - -/** - * camel_stream_eos: - * @stream: a CamelStream object - * - * Test if there are bytes left to read on the @stream object. - * - * Return value: %TRUE if all the contents on the stream has been read, or - * %FALSE if information is still available. - **/ -gboolean -camel_stream_eos (CamelStream *stream) -{ - g_return_val_if_fail (CAMEL_IS_STREAM (stream), TRUE); - - return CS_CLASS (stream)->eos (stream); -} - -/** - * camel_stream_reset: reset a stream - * @stream: the stream object - * - * Reset a stream. That is, put it in a state where it can be read - * from the beginning again. Not all streams in Camel are seekable, - * but they must all be resettable. - * - * Return value: -1 on error. - **/ -int -camel_stream_reset (CamelStream *stream) -{ - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - - return CS_CLASS (stream)->reset (stream); -} - -/***************** Utility functions ********************/ - -/** - * camel_stream_write_string: - * @stream: a stream object - * @string: a string - * - * Writes the string to the stream. - * - * Return value: the number of characters output, -1 on error. - **/ -ssize_t -camel_stream_write_string (CamelStream *stream, const char *string) -{ - return camel_stream_write (stream, string, strlen (string)); -} - -/** - * camel_stream_printf: - * @stream: a stream object - * @fmt: a printf-style format string - * - * This printfs the given data to @stream. - * - * Return value: the number of characters output, -1 on error. - **/ -ssize_t -camel_stream_printf (CamelStream *stream, const char *fmt, ... ) -{ - va_list args; - char *string; - ssize_t ret; - - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - - va_start (args, fmt); - string = g_strdup_vprintf (fmt, args); - va_end (args); - - if (!string) - return -1; - - ret = camel_stream_write (stream, string, strlen (string)); - g_free (string); - return ret; -} - -/** - * camel_stream_write_to_stream: - * @stream: Source CamelStream. - * @output_stream: Destination CamelStream. - * - * Write all of a stream (until eos) into another stream, in a blocking - * fashion. - * - * Return value: Returns -1 on error, or the number of bytes succesfully - * copied across streams. - **/ -ssize_t -camel_stream_write_to_stream (CamelStream *stream, CamelStream *output_stream) -{ - char tmp_buf[4096]; - ssize_t total = 0; - ssize_t nb_read; - ssize_t nb_written; - - g_return_val_if_fail (CAMEL_IS_STREAM (stream), -1); - g_return_val_if_fail (CAMEL_IS_STREAM (output_stream), -1); - - while (!camel_stream_eos (stream)) { - nb_read = camel_stream_read (stream, tmp_buf, sizeof (tmp_buf)); - if (nb_read < 0) - return -1; - else if (nb_read > 0) { - nb_written = 0; - - while (nb_written < nb_read) { - ssize_t len = camel_stream_write (output_stream, tmp_buf + nb_written, - nb_read - nb_written); - if (len < 0) - return -1; - nb_written += len; - } - total += nb_written; - } - } - return total; -} |