| 1 | ###########################################################################
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| 2 | #
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| 3 | # printusage.pm --
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 |
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| 27 | package PrintUsage;
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| 28 |
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| 29 |
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| 30 | use gsprintf;
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| 31 |
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| 32 |
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| 33 | sub print_xml_header
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| 34 | {
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| 35 | print STDERR "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
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| 36 | print STDERR "<!DOCTYPE Info [\n";
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| 37 | print STDERR " <!ELEMENT Info (Name, Desc, Arguments)>\n";
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| 38 | print STDERR " <!ELEMENT Arguments (Option*)>\n";
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| 39 | print STDERR " <!ELEMENT Option (Name, Desc, Type, Required, Default?, List?)>\n";
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| 40 | print STDERR " <!ELEMENT Name (#PCDATA)>\n";
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| 41 | print STDERR " <!ELEMENT Desc (#PCDATA)>\n";
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| 42 | print STDERR " <!ELEMENT Type (#PCDATA)>\n";
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| 43 | print STDERR " <!ELEMENT Required (#PCDATA)>\n";
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| 44 | print STDERR " <!ELEMENT Default (#PCDATA)>\n";
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| 45 | print STDERR " <!ELEMENT List (Value*)>\n";
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| 46 | print STDERR " <!ELEMENT Value (Name, Desc?)>\n";
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| 47 | print STDERR "]>\n\n";
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| 48 | }
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| 49 |
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| 50 |
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| 51 | sub print_options_xml
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| 52 | {
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| 53 | local $language = shift(@_);
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| 54 | local $options = shift(@_);
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| 55 |
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| 56 | foreach $option (@$options) {
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| 57 | local $optionname = $option->{'name'};
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| 58 | local $optiondesc = &gsprintf::lookup_string($language, $option->{'desc'});
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| 59 |
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| 60 | # Escape '<' and '>' characters
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| 61 | $optiondesc =~ s/</</g;
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| 62 | $optiondesc =~ s/>/>/g;
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| 63 |
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| 64 | # Display option name, description and type
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| 65 | print STDERR " <Option>\n";
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| 66 | print STDERR " <Name>$optionname</Name>\n";
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| 67 | print STDERR " <Desc>$optiondesc</Desc>\n";
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| 68 | print STDERR " <Type>$option->{'type'}</Type>\n";
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| 69 |
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| 70 | # If the option has a required field, display this
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| 71 | if (defined($option->{'reqd'})) {
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| 72 | print STDERR " <Required>$option->{'reqd'}</Required>\n";
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| 73 | }
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| 74 |
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| 75 | # If the option has a list of possible values, display these
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| 76 | if (defined $option->{'list'}) {
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| 77 | print STDERR " <List>\n";
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| 78 | local $optionvalueslist = $option->{'list'};
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| 79 | foreach $optionvalue (@$optionvalueslist) {
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| 80 | print STDERR " <Value>\n";
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| 81 | print STDERR " <Name>$optionvalue->{'name'}</Name>\n";
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| 82 | if (defined $optionvalue->{'desc'}) {
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| 83 | local $optionvaluedesc = &gsprintf::lookup_string($language, $optionvalue->{'desc'});
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| 84 |
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| 85 | # Escape '<' and '>' characters
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| 86 | $optionvaluedesc =~ s/</</g;
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| 87 | $optionvaluedesc =~ s/>/>/g;
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| 88 |
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| 89 | print STDERR " <Desc>$optionvaluedesc</Desc>\n";
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| 90 | }
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| 91 | print STDERR " </Value>\n";
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| 92 | }
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| 93 |
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| 94 | # Special case for 'input_encoding'
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| 95 | if ($optionname =~ m/^input_encoding$/i) {
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| 96 | my $e = $encodings::encodings;
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| 97 | foreach $enc (sort {$e->{$a}->{'name'} cmp $e->{$b}->{'name'}} keys (%$e)) {
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| 98 | print STDERR " <Value>\n";
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| 99 | print STDERR " <Name>$enc</Name>\n";
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| 100 | print STDERR " <Desc>$e->{$enc}->{'name'}</Desc>\n";
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| 101 | print STDERR " </Value>\n";
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| 102 | }
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| 103 | }
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| 104 |
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| 105 | print STDERR " </List>\n";
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| 106 | }
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| 107 |
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| 108 | # Show the default value for the option, if there is one
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| 109 | if (defined $option->{'deft'}) {
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| 110 | print STDERR " <Default>$option->{'deft'}</Default>\n";
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| 111 | }
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| 112 |
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| 113 | print STDERR " </Option>\n";
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| 114 | }
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| 115 | }
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| 116 |
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| 117 |
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| 118 | sub find_longest_option_string
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| 119 | {
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| 120 | local $options = shift(@_);
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| 121 |
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| 122 | local $maxlength = 0;
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| 123 | foreach $option (@$options) {
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| 124 | local $optionname = $option->{'name'};
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| 125 | local $optiontype = $option->{'type'};
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| 126 |
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| 127 | local $optionlength = length(" -$optionname");
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| 128 | if ($optiontype ne "flag") {
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| 129 | $optionlength = $optionlength + length(" <$optiontype>");
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| 130 | }
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| 131 |
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| 132 | # Remember the longest
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| 133 | if ($optionlength > $maxlength) {
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| 134 | $maxlength = $optionlength;
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| 135 | }
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| 136 | }
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| 137 | return $maxlength;
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| 138 | }
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| 139 |
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| 140 |
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| 141 | sub print_options_txt
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| 142 | {
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| 143 | local $language = shift(@_);
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| 144 | local $options = shift(@_);
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| 145 | local $optiondescoffset = shift(@_);
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| 146 |
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| 147 | foreach $option (@$options) {
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| 148 | # Display option name
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| 149 | local $optionname = $option->{'name'};
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| 150 | print STDERR " -$optionname";
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| 151 | local $optionstringlength = length(" -$optionname");
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| 152 |
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| 153 | # Display option type, if the option is not a flag
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| 154 | local $optiontype = $option->{'type'};
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| 155 | if ($optiontype ne "flag") {
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| 156 | print STDERR " <$optiontype>";
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| 157 | $optionstringlength = $optionstringlength + length(" <$optiontype>");
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| 158 | }
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| 159 |
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| 160 | # Display the option description
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| 161 | local $optiondesc = &gsprintf::lookup_string($language, $option->{'desc'});
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| 162 | local $optionreqd = $option->{'reqd'};
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| 163 | if (defined($optionreqd) && $optionreqd eq "yes") {
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| 164 | $optiondesc = "(" . &gsprintf::lookup_string($language, "{PrintUsage.required}") . ") " . $optiondesc;
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| 165 | }
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| 166 | &display_text_in_column($optiondesc, $optiondescoffset, $optionstringlength, 80);
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| 167 |
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| 168 | # Show the default value for the option, if there is one
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| 169 | local $optiondefault = $option->{'deft'};
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| 170 | if (defined($optiondefault)) {
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| 171 | print STDERR " " x $optiondescoffset;
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| 172 | print STDERR &gsprintf::lookup_string($language, "{PrintUsage.default}");
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| 173 | print STDERR ": " . &gsprintf::lookup_string($language, $optiondefault) . "\n";
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| 174 | }
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| 175 |
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| 176 | # If the option has a list of possible values, display these
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| 177 | local $optionvalueslist = $option->{'list'};
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| 178 | if (defined($optionvalueslist)) {
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| 179 | print STDERR "\n";
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| 180 | foreach $optionvalue (@$optionvalueslist) {
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| 181 | local $optionvaluename = $optionvalue->{'name'};
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| 182 | print STDERR " " x $optiondescoffset;
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| 183 | print STDERR "$optionvaluename:";
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| 184 |
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| 185 | local $optionvaluedesc = &gsprintf::lookup_string($language, $optionvalue->{'desc'});
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| 186 | &display_text_in_column($optionvaluedesc, $optiondescoffset + 2,
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| 187 | $optiondescoffset + length($optionvaluename), 80);
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| 188 | }
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| 189 | }
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| 190 |
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| 191 | # Special case for 'input_encoding'
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| 192 | if ($optionname =~ m/^input_encoding$/i) {
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| 193 | my $e = $encodings::encodings;
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| 194 | foreach $enc (sort {$e->{$a}->{'name'} cmp $e->{$b}->{'name'}} keys (%$e)) {
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| 195 | print STDERR " " x $optiondescoffset;
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| 196 | print STDERR "$enc:";
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| 197 |
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| 198 | local $encodingdesc = $e->{$enc}->{'name'};
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| 199 | &display_text_in_column($encodingdesc, $optiondescoffset + 2,
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| 200 | $optiondescoffset + length("$enc:"), 80);
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| 201 | }
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| 202 | }
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| 203 |
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| 204 | # Add a blank line to separate options
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| 205 | print STDERR "\n";
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| 206 | }
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| 207 | }
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| 208 |
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| 209 |
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| 210 | sub display_text_in_column
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| 211 | {
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| 212 | local ($text, $columnbeg, $firstlineoffset, $columnend) = @_;
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| 213 |
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| 214 | # Spaces are put *before* words, so treat the column beginning as 1 smaller than it is
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| 215 | $columnbeg = $columnbeg - 1;
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| 216 |
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| 217 | # Add some padding (if needed) for the first line
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| 218 | local $linelength = $columnbeg;
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| 219 | if ($firstlineoffset < $columnbeg) {
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| 220 | print STDERR " " x ($columnbeg - $firstlineoffset);
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| 221 | }
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| 222 | else {
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| 223 | $linelength = $firstlineoffset;
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| 224 | }
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| 225 |
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| 226 | # Break the text into words, and display one at a time
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| 227 | local @words = split(/ /, $text);
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| 228 |
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| 229 | foreach $word (@words) {
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| 230 | # If printing this word would exceed the column end, start a new line
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| 231 | if (($linelength + length($word)) >= $columnend) {
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| 232 | print STDERR "\n";
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| 233 | print STDERR " " x $columnbeg;
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| 234 | $linelength = $columnbeg;
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| 235 | }
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| 236 |
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| 237 | # Write the word
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| 238 | print STDERR " $word";
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| 239 | $linelength = $linelength + length(" $word");
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| 240 | }
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| 241 |
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| 242 | print STDERR "\n";
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| 243 | }
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| 244 |
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| 245 |
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| 246 | 1;
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