275 lines
6.7 KiB
C
275 lines
6.7 KiB
C
/* @(#) Command; reads the header of a Vasari picture file.
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* @(#) Usage: header vasari_file
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* @(#)
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*
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* Copyright: Birkbeck College, History of Art Dept, London, VASARI project.
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*
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* Author: Nicos Dessipris
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* Written on: 17/01/1990
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* Modified on : 17/04/1990, 2/6/93 K.Martinez
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* 16/6/93 JC
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* - now calls im_mmapin instead of bizzare bogosity
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* 1/6/95 JC
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* - extra field argument for testing particular bits of the header
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* 29/10/98 JC
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* - now uses im_open()
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* 24/5/01 JC
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* - uses im_tiff2vips_header() etc., for speed
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* 7/5/03 JC
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* - uses im_open_header()
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* 1/8/05
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* - uses new header API, for great smallness
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* 4/8/05
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* - back to plain im_open() now that's lazy enough for us
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* 9/9/05
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* - display meta fields in save format, if possible
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* 20/9/05
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* - new field name "getext" reads extension block
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* 24/8/06
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* - use GOption, loop over args
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* 4/1/07
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* - use im_history_get()
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* 29/2/08
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* - don't stop on error
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* 23/7/09
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* - ... but do return an error code if anything failed
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* 6/11/09
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* - added im_history_get(), im_getexp(), im_printdesc() as wrapped
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* functions, so "header" is now obsolete
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* 27/2/13
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* - convert to vips8 API
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* 29/6/20
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* - allow "stdin" as a filename
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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., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <glib/gi18n.h>
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#include <stdio.h>
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#include <string.h>
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#include <locale.h>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#include <vips/debug.h>
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static char *main_option_field = NULL;
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static gboolean main_option_all = FALSE;
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static gboolean version = FALSE;
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static GOptionEntry main_option[] = {
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{ "all", 'a', 0, G_OPTION_ARG_NONE, &main_option_all,
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N_( "show all fields" ), NULL },
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{ "field", 'f', 0, G_OPTION_ARG_STRING, &main_option_field,
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N_( "print value of FIELD (\"getext\" reads extension block, "
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"\"Hist\" reads image history)" ),
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"FIELD" },
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{ "version", 'v', 0, G_OPTION_ARG_NONE, &version,
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N_( "print version" ), NULL },
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{ NULL }
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};
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/* A non-fatal error. Print the vips error buffer and continue.
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*/
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static void
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print_error( void )
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{
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fprintf( stderr, "%s: %s", g_get_prgname(), vips_error_buffer() );
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vips_error_clear();
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}
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static void *
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print_field_fn( VipsImage *image, const char *field, GValue *value, void *a )
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{
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gboolean *many = (gboolean *) a;
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char str[256];
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VipsBuf buf = VIPS_BUF_STATIC( str );
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if( *many &&
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image->filename )
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printf( "%s: ", image->filename );
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printf( "%s: ", field );
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vips_buf_appendgv( &buf, value );
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printf( "%s\n", vips_buf_all( &buf ) );
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return( NULL );
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}
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/* Print header, or parts of header.
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*/
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static int
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print_header( VipsImage *image, gboolean many )
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{
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if( !main_option_field ) {
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if( image->filename )
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printf( "%s: ", image->filename );
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vips_object_print_summary( VIPS_OBJECT( image ) );
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if( main_option_all )
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(void) vips_image_map( image, print_field_fn, &many );
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}
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else if( strcmp( main_option_field, "getext" ) == 0 ) {
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if( vips__has_extension_block( image ) ) {
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void *buf;
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int size;
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if( !(buf =
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vips__read_extension_block( image, &size )) )
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return( -1 );
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printf( "%s", (char *) buf );
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g_free( buf );
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}
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}
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else if( strcmp( main_option_field, "Hist" ) == 0 )
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printf( "%s", vips_image_get_history( image ) );
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else {
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char *str;
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if( vips_image_get_as_string( image, main_option_field, &str ) )
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return( -1 );
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printf( "%s\n", str );
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g_free( str );
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}
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return( 0 );
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}
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int
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main( int argc, char *argv[] )
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{
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GOptionContext *context;
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GOptionGroup *main_group;
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GError *error = NULL;
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int i;
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int result;
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if( VIPS_INIT( argv[0] ) )
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vips_error_exit( "unable to start VIPS" );
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#ifdef ENABLE_NLS
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textdomain( GETTEXT_PACKAGE );
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#endif /* ENABLE_NLS */
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setlocale( LC_ALL, "" );
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{
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char *basename;
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basename = g_path_get_basename( argv[0] );
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g_set_prgname( basename );
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g_free( basename );
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}
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/* On Windows, argv is ascii-only .. use this to get a utf-8 version of
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* the args.
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*/
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#ifdef G_OS_WIN32
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argv = g_win32_get_command_line();
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#endif /*G_OS_WIN32*/
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context = g_option_context_new( _( "- print image header" ) );
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main_group = g_option_group_new( NULL, NULL, NULL, NULL, NULL );
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g_option_group_add_entries( main_group, main_option );
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vips_add_option_entries( main_group );
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g_option_group_set_translation_domain( main_group, GETTEXT_PACKAGE );
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g_option_context_set_main_group( context, main_group );
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#ifdef G_OS_WIN32
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if( !g_option_context_parse_strv( context, &argv, &error ) )
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#else /*!G_OS_WIN32*/
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if( !g_option_context_parse( context, &argc, &argv, &error ) )
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#endif /*G_OS_WIN32*/
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{
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if( error ) {
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fprintf( stderr, "%s\n", error->message );
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g_error_free( error );
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}
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vips_error_exit( "try \"%s --help\"", g_get_prgname() );
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}
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g_option_context_free( context );
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if( version )
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printf( "vips-%s\n", vips_version_string() );
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result = 0;
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for( i = 1; argv[i]; i++ ) {
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VipsImage *image;
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char filename[VIPS_PATH_MAX];
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char option_string[VIPS_PATH_MAX];
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vips__filename_split8( argv[i], filename, option_string );
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if( strcmp( filename, "stdin" ) == 0 ) {
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VipsSource *source;
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if( !(source = vips_source_new_from_descriptor( 0 )) )
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return( -1 );
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if( !(image = vips_image_new_from_source( source,
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option_string, NULL )) ) {
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VIPS_UNREF( source );
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return( -1 );
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}
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VIPS_UNREF( source );
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}
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else {
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if( !(image =
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vips_image_new_from_file( argv[i], NULL )) ) {
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print_error();
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result = 1;
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}
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}
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if( image &&
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print_header( image, argv[2] != NULL ) ) {
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print_error();
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result = 1;
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}
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if( image )
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g_object_unref( image );
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}
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/* We don't free this on error exit, sadly.
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*/
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#ifdef G_OS_WIN32
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g_strfreev( argv );
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#endif /*G_OS_WIN32*/
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vips_shutdown();
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return( result );
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}
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