/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * Author: * Bertrand Guiheneuf * * Copyright 1999, 2000 Ximian, Inc. (www.ximian.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * 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 #endif #include "camel-seekable-stream.h" static CamelStreamClass *parent_class = NULL; /* Returns the class for a CamelSeekableStream */ #define CSS_CLASS(so) CAMEL_SEEKABLE_STREAM_CLASS (CAMEL_OBJECT_GET_CLASS(so)) static off_t seek (CamelSeekableStream *stream, off_t offset, CamelStreamSeekPolicy policy); static off_t stream_tell (CamelSeekableStream *stream); static int reset (CamelStream *stream); static int set_bounds (CamelSeekableStream *stream, off_t start, off_t end); static void camel_seekable_stream_class_init (CamelSeekableStreamClass *camel_seekable_stream_class) { CamelStreamClass *camel_stream_class = CAMEL_STREAM_CLASS (camel_seekable_stream_class); parent_class = CAMEL_STREAM_CLASS( camel_type_get_global_classfuncs( CAMEL_STREAM_TYPE ) ); /* seekable stream methods */ camel_seekable_stream_class->seek = seek; camel_seekable_stream_class->tell = stream_tell; camel_seekable_stream_class->set_bounds = set_bounds; /* camel stream methods overload */ camel_stream_class->reset = reset; } static void camel_seekable_stream_init (void *o) { CamelSeekableStream *stream = (CamelSeekableStream *)o; stream->bound_start = 0; stream->bound_end = CAMEL_STREAM_UNBOUND; } CamelType camel_seekable_stream_get_type (void) { static CamelType camel_seekable_stream_type = CAMEL_INVALID_TYPE; if (camel_seekable_stream_type == CAMEL_INVALID_TYPE) { camel_seekable_stream_type = camel_type_register( CAMEL_STREAM_TYPE, "CamelSeekableStream", sizeof( CamelSeekableStream ), sizeof( CamelSeekableStreamClass ), (CamelObjectClassInitFunc) camel_seekable_stream_class_init, NULL, (CamelObjectInitFunc) camel_seekable_stream_init, NULL ); } return camel_seekable_stream_type; } static off_t seek (CamelSeekableStream *stream, off_t offset, CamelStreamSeekPolicy policy) { g_warning ("CamelSeekableStream::seek called on default " "implementation\n"); return -1; } /** * camel_stream_seek: * @stream: a CamelStream object. * @offset: offset value * @policy: what to do with the offset * * Seek to the specified position in @stream. * * If @policy is CAMEL_STREAM_SET, seeks to @offset. * * If @policy is CAMEL_STREAM_CUR, seeks to the current position plus * @offset. * * If @policy is CAMEL_STREAM_END, seeks to the end of the stream plus * @offset. * * Regardless of @policy, the stream's final position will be clamped * to the range specified by its lower and upper bounds, and the * stream's eos state will be updated. * * Return value: new position, -1 if operation failed. **/ off_t camel_seekable_stream_seek (CamelSeekableStream *stream, off_t offset, CamelStreamSeekPolicy policy) { g_return_val_if_fail (CAMEL_IS_SEEKABLE_STREAM (stream), -1); return CSS_CLASS (stream)->seek (stream, offset, policy); } static off_t stream_tell (CamelSeekableStream *stream) { return stream->position; } /** * camel_seekable_stream_tell: * @stream: seekable stream object * * Get the current position of a seekable stream. * * Return value: the position. **/ off_t camel_seekable_stream_tell (CamelSeekableStream *stream) { g_return_val_if_fail (CAMEL_IS_SEEKABLE_STREAM (stream), -1); return CSS_CLASS (stream)->tell (stream); } static int set_bounds (CamelSeekableStream *stream, off_t start, off_t end) { /* store the bounds */ stream->bound_start = start; stream->bound_end = end; if (start > stream->position) return camel_seekable_stream_seek (stream, start, CAMEL_STREAM_SET); return 0; } /** * camel_seekable_stream_set_bounds: * @stream: a seekable stream * @start: the first valid position * @end: the first invalid position, or CAMEL_STREAM_UNBOUND * * Set the range of valid data this stream is allowed to cover. If * there is to be no @end value, then @end should be set to * #CAMEL_STREAM_UNBOUND. * * Return value: -1 on error. **/ int camel_seekable_stream_set_bounds (CamelSeekableStream *stream, off_t start, off_t end) { g_return_val_if_fail (CAMEL_IS_SEEKABLE_STREAM (stream), -1); g_return_val_if_fail (end == CAMEL_STREAM_UNBOUND || end >= start, -1); return CSS_CLASS (stream)->set_bounds (stream, start, end); } /* a default implementation of reset for seekable streams */ static int reset (CamelStream *stream) { CamelSeekableStream *seekable_stream; seekable_stream = CAMEL_SEEKABLE_STREAM (stream); return camel_seekable_stream_seek (seekable_stream, seekable_stream->bound_start, CAMEL_STREAM_SET); } 67138fb9ba427ebff7484d2ad379378eb202'>refslogtreecommitdiffstats
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* Update to 4.6.0olivierd2016-12-152-4/+4
* Update to 4.5.0jhale2016-12-012-4/+4
* - Update to 4.4.0cpm2016-10-052-5/+5
* Let USES=localbase add -L${LOCALBASE}/lib to LIBS instead of LDFLAGS.tijl2016-10-011-1/+1
* - Update to 4.3.6amdmi32016-07-192-9/+6
* - Update to 4.3.1amdmi32016-05-282-4/+5
* Remove ${PORTSDIR}/ from dependencies, categories d, e, f, and g.mat2016-04-011-2/+2
* Update to 4.2.2.rakuco2016-03-102-21/+12
* Convert to USES=jpegantoine2015-06-231-3/+2
* Bump portrevision after png updatebapt2014-12-261-0/+1
* Change libpng15.so to libpng.so in LIB_DEPENDS to prepare the upgradeantoine2014-12-261-1/+1
* cleanup plistbapt2014-12-211-1/+0
* graphics/bmeps: update to 3.16.0wg2014-07-312-3/+7
* graphics/bmeps: Update version 2.2.26 => 3.8.2marino2014-07-134-152/+22
* Convert g* to USES=zipbapt2014-03-101-2/+1
* - Stage supportantoine2014-01-221-14/+13
* Add NO_STAGE all over the place in preparation for the staging support (cat: ...bapt2013-09-211-0/+1
* - Remove MAKE_JOBS_SAFE variableak2013-08-151-1/+0
* - Convert to new perl frameworkaz2013-08-031-1/+1
* - Update to 2.2.26.araujo2013-01-213-31/+35
* - Reset MAINTAINER due to unrecoverable bouncezi2012-12-051-1/+1
* Update to 2.2.24arved2012-06-082-4/+4
* - update png to 1.5.10dinoex2012-06-011-2/+2
* - Fix previous patch mangled by committer (scheidell, me)scheidell2012-03-061-108/+101
* - Unbreak with net-snmpscheidell2012-03-032-0/+109
* - Update to 2.2.22pav2011-12-024-19/+6
* - Update to 2.2.10abeech2011-07-055-136/+52
* -remove MD5ohauer2011-07-031-1/+0
* - Update to 2.1.5miwi2010-05-093-13/+10
* - update to 1.4.1dinoex2010-03-281-0/+1
* - Update to 2.1.3sylvio2010-03-202-5/+4
* - update to jpeg-8dinoex2010-02-051-0/+1
* - Drop maintainershipmiwi2010-01-271-1/+1
* - Switch SourceForge ports to the new File Release System: categories startin...amdmi32009-08-221-2/+1
* - Update to 2.1.2wxs2009-08-026-85/+125
* - update to jpeg7dinoex2009-07-181-1/+2
* - Pass maintainer to submitterpgollucci2009-07-081-1/+1
* Reset rushani@FreeBSD.org due to maintainer-timeouts and no commits forlinimon2008-08-15