121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
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/* @(#) Appends one line of history consisting of a buffer of data,
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* @(#) time, history and CR in history section of the image descriptor
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* @(#) The history variable list must be declared properly
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* @(#) by the calling function
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* @(#)
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* @(#) int im_histlin(variable_list)
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* @(#) (variable_list) is (imagedescriptor, format, arg1, arg2, ...)
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* @(#) format, arg1, arg2, ... are the same as in printf
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* @(#)
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* @(#) Returns either 0 (success) or -1 (fail)
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* @(#)
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*
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* Copyright: Nicos Dessipris
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* Written on: 16/01/1990
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* Modified on : 21/03/1991
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* 28/10/92 JC
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* - if Hist is NULL, no longer returns error code. Now makes a history
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* line (just the file name) and continues
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* - does not overwrite the end of strdup buffers any more!
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* - bugs in calls to time/ctime fixed
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* - no longer free's ctime's static buffer!
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* - frees old Hist correctly
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* 22/12/94
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* - ANSIfied with stdarg
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* 2/9/05
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* - no more first line of Hist means something special nonsense
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* 4/1/07
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* - added im_history_get()
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/*
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#define DEBUG
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <time.h>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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int
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im_histlin( IMAGE *im, const char *fmt, ... )
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{
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va_list args;
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char line[4096];
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time_t timebuf;
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/* Format command. -40, to leave 26 for the ctime, three for the # and
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* a bit.
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*/
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va_start( args, fmt );
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(void) im_vsnprintf( line, 4096 - 40, fmt, args );
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va_end( args );
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strcat( line, " # " );
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/* Add the date. ctime always attaches a '\n', gah.
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*/
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time( &timebuf );
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strcat( line, ctime( &timebuf ) );
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line[strlen( line ) - 1] = '\0';
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#ifdef DEBUG
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printf( "im_histlin: adding:\n\t%s\nto history on image %p\n",
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line, im );
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#endif /*DEBUG*/
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im->history_list = g_slist_append( im->history_list,
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im__gvalue_ref_string_new( line ) );
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return( 0 );
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}
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/* Read an image's history.
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*/
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const char *
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im_history_get( IMAGE *im )
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{
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if( !im->Hist )
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im->Hist = im__gslist_gvalue_get( im->history_list );
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return( im->Hist ? im->Hist : "" );
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}
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