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411 lines
12 KiB
411 lines
12 KiB
/* Option processing for xcftools -*- C -*-
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*
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* Copyright (C) 2006 Henning Makholm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU 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 St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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OPTIONGROUP(1i,General options);
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OPTION('h',--help,show this message,
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(Print an option summery to standard output and exit with a
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return code of 0.
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));
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exit(0);
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OPTION('V',--version,show version,
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(Print the version numer of
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.B xcftools
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to standard output and exit with a return code of 0.
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));
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printf(OPTI_TARGET " - " PACKAGE_STRING "\n");
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exit(0);
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OPTION('v',--verbose,show progress messages,
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(Print progress messages about the conversion to standard error.
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));
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verboseFlag = 1 ;
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break ;
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OPTION('j',--bzip,input is bzip2 compressed,
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(Equivalent to
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.BR "\-Z bzcat" .
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Default if the filename ends with
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.BR bz2 .
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));
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unzipper = "bzcat" ;
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break ;
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OPTION('z',--gzip,input is gzip compressed,
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(Equivalent to
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.BR "\-Z zcat" .
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Default if the filename ends with
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.BR gz .
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));
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unzipper = "zcat" ;
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break ;
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OPTION('Z',--unpack,(command) use 'command' to decompress input,
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(Specify a command that the input file is filtered through
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before being interpreted as an XCF file. The command is invoked as
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.I command filename
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and must produce output to its standard output.
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Note that it is not possible to specify arguments as part of
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.IR command .
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An uncompressor is selected automatically if the filename ends
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with
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.B gz
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or
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.BR bz2 ;
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to suppress this, use
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.B \-Z cat
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(which is implemented without actually starting a
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.BR cat (1)
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process).
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));
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unzipper = optarg ;
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break ;
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#ifdef XCF2FOO
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OPTION('o',--output,(filename) name output file,
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(Write the converted picture to
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.I filename
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instead of to standard output.
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));
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flatspec.output_filename = optarg ;
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break ;
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#ifdef XCF2PNM
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OPTION('a',--alpha,(filename) write transparency map,
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(Output a transparency mask for the flattened image to
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.I filename
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as a
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.BR pgm (5)
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file, in addition to the ordinary output.
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If the flattened image is completely opaque, this will produce an
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error message and exit status 101;
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use
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.B \-A
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to suppress this.
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));
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flatspec.transmap_filename = optarg ;
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break ;
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#endif
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OPTION('b',--background,(color) select background color,
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(Use this color for transparent pixels in the image.
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The color can be given as
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.B #rrggbb
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or
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.B #rgb
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hexadecimal values,
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or as an X11 color name
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(which will only work if a color name database can be found
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in one of a number of standard locations).
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));
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{
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unsigned r,g,b ;
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unsigned long hex ;
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int met = 0 ;
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if( *optarg == '#' )
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sscanf(optarg+1,"%lx%n",&hex,&met);
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if( met == 3 && strlen(optarg) == 4 ) {
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r = ((hex >> 8) & 0xF) * 0x11 ;
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g = ((hex >> 4) & 0xF) * 0x11 ;
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b = ((hex >> 0) & 0xF) * 0x11 ;
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} else if( met == 6 && strlen(optarg) == 7 ) {
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r = ((hex >> 16) & 0xFF) ;
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g = ((hex >> 8) & 0xFF) ;
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b = ((hex >> 0) & 0xFF) ;
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} else if( strcasecmp(optarg,"black") == 0 )
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r = g = b = 0 ;
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else if( strcasecmp(optarg,"white") == 0 )
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r = g = b = 255 ;
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else {
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const char *filenames[] = { "/etc/X11/rgb.txt",
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"/usr/lib/X11/rgb.txt",
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"/usr/share/X11/rgb.txt",
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NULL };
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const char **fnp ;
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r = (unsigned)-1 ;
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int any = 0 ;
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for( fnp = filenames; r == (unsigned)-1 && fnp && *fnp; fnp++ ) {
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FILE *colortable = fopen(*fnp,"rt");
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if( colortable ) {
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any = 1 ;
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int clen ;
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char colorbuf[80] ;
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do {
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if( !fgets(colorbuf,sizeof colorbuf,colortable) ) {
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r = (unsigned)-1 ;
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break ;
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}
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clen = strlen(colorbuf);
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while( clen && isspace(colorbuf[clen-1]) )
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clen-- ;
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colorbuf[clen] = '\0' ;
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clen = 0 ;
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sscanf(colorbuf," %u %u %u %n",&r,&g,&b,&clen);
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} while( clen == 0 || strcasecmp(colorbuf+clen,optarg) != 0 );
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fclose(colortable) ;
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}
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}
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if( !any ) {
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fprintf(stderr,_("Could not find X11 color database\n"));
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}
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}
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if( r == (unsigned)-1 )
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FatalGeneric(20,_("Unknown background color '%s'"),optarg);
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flatspec.default_pixel = ((rgba)255 << ALPHA_SHIFT)
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+ ((rgba)r << RED_SHIFT)
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+ ((rgba)g << GREEN_SHIFT)
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+ ((rgba)b << BLUE_SHIFT);
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break ;
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}
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OPTION('A',--force-alpha,force alpha channel in output,
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(Invent a trivial alpha channel even if the flattened image is
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completely opaque.
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));
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flatspec.default_pixel = FORCE_ALPHA_CHANNEL ;
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break ;
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OPTION('c',--color --colour,select color output,
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(Force the output to use RGB color space even if it there are
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more compact alternatives.
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#ifdef XCF2PNM
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This will be selected automatically if the output file''s name
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ends with
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.BR .ppm .
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#endif
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));
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flatspec.out_color_mode = COLOR_RGB ;
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break ;
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OPTION('g',--gray --grey,select grayscale output,
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(Force the output to be a grayscale image even if it may be monochrome.
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If any colored pixels are encountered, exit with status 103.
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This will be selected automatically if the output file''s name
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ends with
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.BR .pgm .
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));
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flatspec.out_color_mode = COLOR_GRAY ;
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break ;
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#ifdef XCF2PNM
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OPTION('m',--mono,select monochrome output,
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(Force the output to be a monochrome image.
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If any colors except black and white are encountered, exit with
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status 103.
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This will be selected automatically if the output file''s name
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ends with
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.BR .pbm .
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));
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flatspec.out_color_mode = COLOR_MONO ;
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break ;
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#endif
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#ifdef XCF2PNM
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OPTION('n',--pnm,select -c/-g/-m by image contents,
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(Suppress the automatic choice of
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.BR \-c ,
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.BR \-g ,
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or
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.BR \-m
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based on output filename, and instead select the output format
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based on image contents.
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This is the default if the filename is not recognized, and
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when writing to stdout.
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));
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flatspec.out_color_mode = COLOR_BY_CONTENTS ;
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break ;
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#endif
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OPTION('T',--truecolor,treat indexed images as RGB for flattening,
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(Use standard RGB compositing for flattening indexed layers.
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Without this option,
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.B \*p
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will mimic the Gimp''s current strategy of rounding each
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alpha value to either full transparency or full opacity,
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and interpret all layer modes as
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.BR Normal .
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));
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flatspec.gimpish_indexed = 0 ;
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break ;
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OPTION('G',--for-gif,disallow partial transparency,
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(Assert that the flattened image will have no partial transparency
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(allowing a more compact representation of the alpha output).
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Exit with status 102 if the flattened image has any partial
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transparency.
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If
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.B \-b
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is also given, this tests whether there there is partial
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transparency before applying the background color.
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));
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flatspec.partial_transparency_mode = FORBID_PARTIAL_TRANSPARENCY ;
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break ;
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OPTION('D',--dissolve,dissolve partial transparency,
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(Do a "dissolve" step to eliminate partial transparency after
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flattening.
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If
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.B \-b
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is also given, this happens before the background color is applied.
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));
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flatspec.partial_transparency_mode = DISSOLVE_PARTIAL_TRANSPARENCY ;
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break ;
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OPTION('f',--full-image,flatten to memory; then analyse,
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(First flatten the entire image to a memory buffer before writing
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output. Then analyse the image to decide on the details of the
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output format (e.g., whether a grayscale output is sufficient).
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Without this option, the program flattens only a singe row of "tiles"
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(height 64) at a time.
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));
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flatspec.process_in_memory = 1 ;
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break ;
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OPTION('S',--size,(w"x"h) crop image while converting,
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(Crop the converted image to width \fIw\fP and height \fIh\fP.
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));
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{
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unsigned w,h ;
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int n = 0 ;
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sscanf(optarg,"%ux%u%n",&w,&h,&n) ;
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if( n && n == strlen(optarg) ) {
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if( flatspec.window_mode == AUTOCROP ) flatspec.window_mode = USE_CANVAS ;
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flatspec.window_mode |= MANUAL_CROP ;
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flatspec.dim.width = w ;
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flatspec.dim.height = h ;
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} else
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FatalGeneric(20,_("-S option must have an argument of the form wxh"));
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break ;
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}
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OPTION('O',--offset,(x","y) translate converted part of image,
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(Offset the converted part of the image from the top-left corner
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of the XCF canvas. Usually used with
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.BR \-S .
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));
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{
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int x,y ;
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int n = 0 ;
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sscanf(optarg,"%d,%d%n",&x,&y,&n) ;
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if( n && n == strlen(optarg) ) {
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if( flatspec.window_mode == AUTOCROP ) flatspec.window_mode = USE_CANVAS ;
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flatspec.window_mode |= MANUAL_OFFSET ;
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flatspec.dim.c.l = x ;
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flatspec.dim.c.t = y ;
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} else
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FatalGeneric(20,_("-O option must have an argument of the form x,y"));
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break ;
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}
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OPTION('C',--autocrop,autocrop to visible layer boundaries,
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(Crop and offset the converted part of the image to just include
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the boundaries of the visible (or selected) layers.
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(Note that the
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.I contents
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of the layers is not taken into account when autocropping).
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.IP
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In the absence of options that specify otherwise, the converted
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image will cover the entire XCF canvas.
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));
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flatspec.window_mode = AUTOCROP ;
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break ;
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#ifndef XCFVIEW
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OPTIONGROUP(1il,Layer-selection options);
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#endif
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OPTION(300,--mode,(mode) set layer mode,
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(Set the layer mode (e.g.,
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.B Normal
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or
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.BR Multiply ).
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));
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{
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GimpLayerModeEffects m ;
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#ifdef ENABLE_NLS
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for( m = 0; m < GimpLayerModeEffects_LAST; m++ )
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if( strcmp(optarg,_(showGimpLayerModeEffects(m))) == 0 )
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goto found_localized ;
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#endif
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for( m = 0; strcmp(optarg,showGimpLayerModeEffects(m)) != 0 ; m++ ) {
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if( m > GimpLayerModeEffects_LAST )
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FatalGeneric(20,_("Layer mode '%s' is unknown"),optarg);
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}
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found_localized:
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lastlayerspec(&flatspec,"--mode")->mode = m ;
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break ;
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}
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OPTION(301,--percent,(n) set opacity in percent,
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(Set the opacity on a scale from 0 to 100
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(as in the Gimp user interface).
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));
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{
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unsigned pct ;
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int n ;
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sscanf(optarg,"%u%n",&pct,&n) ;
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if( n != strlen(optarg) || pct > 100 )
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FatalGeneric(20,_("The argument to --percent is not a percentage"));
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lastlayerspec(&flatspec,"--percent")->opacity = pct * 255 / 100 ;
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break ;
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}
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OPTION(302,--opacity,(n) set opacity in 1/255 units,
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(Set the opacity on a scale from 0 to 255 (as used internally)
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));
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{
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unsigned alpha ;
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int n ;
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sscanf(optarg,"%u%n",&alpha,&n) ;
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if( n != strlen(optarg) || alpha > 255 )
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FatalGeneric(20,_("The argument to --opacity is not a number "
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"between 0 and 255"));
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lastlayerspec(&flatspec,"--percent")->opacity = alpha ;
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break ;
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}
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OPTION(303,--mask,enable layer mask,
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(Enable the layer mask.
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));
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lastlayerspec(&flatspec,"--mask")->hasMask = 1 ;
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break ;
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OPTION(304,--nomask,disable layer mask,
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(Disable the layer mask.
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));
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lastlayerspec(&flatspec,"--nomask")->hasMask = 0 ;
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break ;
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#endif /* XCF2FOO */
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OPTIONGROUP(1i,)
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#if HAVE_ICONV
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OPTION('u',--utf8,use UTF-8 for layer names,
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(Use the raw UTF-8 representation from the XCF file to compare
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and display layer names.
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Ordinarily, layer names will be converted to the character set
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of the current locale.
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));
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use_utf8 = 1 ;
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break ;
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#endif
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