[ee183be] | 1 | use strict; |
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| 2 | use warnings; |
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| 3 | |
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| 4 | package BarnOwl; |
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| 5 | |
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[2be605a] | 6 | use base qw(Exporter); |
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| 7 | our @EXPORT_OK = qw(command getcurmsg getnumcols getidletime |
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| 8 | zephyr_getsender zephyr_getrealm zephyr_zwrite |
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| 9 | zephyr_stylestrip zephyr_smartstrip_user zephyr_getsubs |
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| 10 | queue_message admin_message |
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| 11 | start_question start_password start_edit_win |
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| 12 | get_data_dir get_config_dir popless_text popless_ztext |
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[eede1bf] | 13 | error debug |
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[2be605a] | 14 | create_style getnumcolors wordwrap |
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[ffc4df6] | 15 | add_dispatch remove_dispatch |
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| 16 | add_io_dispatch remove_io_dispatch |
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[2be605a] | 17 | new_command |
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| 18 | new_variable_int new_variable_bool new_variable_string |
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[4df918b] | 19 | quote redisplay); |
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[2be605a] | 20 | our %EXPORT_TAGS = (all => \@EXPORT_OK); |
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| 21 | |
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[fd8dfe7] | 22 | BEGIN { |
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| 23 | # bootstrap in C bindings and glue |
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| 24 | *owl:: = \*BarnOwl::; |
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| 25 | bootstrap BarnOwl 1.2; |
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| 26 | }; |
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| 27 | |
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| 28 | use lib(get_data_dir() . "/lib"); |
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| 29 | use lib(get_config_dir() . "/lib"); |
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| 30 | |
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| 31 | use BarnOwl::Hook; |
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| 32 | use BarnOwl::Hooks; |
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| 33 | use BarnOwl::Message; |
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| 34 | use BarnOwl::Style; |
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[df569c5] | 35 | use BarnOwl::Zephyr; |
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[fd8dfe7] | 36 | use BarnOwl::Timer; |
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[cf26b72] | 37 | use BarnOwl::Editwin; |
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[8eac1a5] | 38 | use BarnOwl::Completion; |
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[b30c256] | 39 | use BarnOwl::Help; |
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[fd8dfe7] | 40 | |
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[6700c605] | 41 | use List::Util qw(max); |
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| 42 | |
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[ee183be] | 43 | =head1 NAME |
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| 44 | |
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| 45 | BarnOwl |
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| 46 | |
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| 47 | =head1 DESCRIPTION |
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| 48 | |
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| 49 | The BarnOwl module contains the core of BarnOwl's perl |
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| 50 | bindings. Source in this module is also run at startup to bootstrap |
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| 51 | barnowl by defining things like the default style. |
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| 52 | |
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| 53 | =for NOTE |
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| 54 | These following functions are defined in perlglue.xs. Keep the |
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| 55 | documentation here in sync with the user-visible commands defined |
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| 56 | there! |
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| 57 | |
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| 58 | =head2 command STRING |
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| 59 | |
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| 60 | Executes a BarnOwl command in the same manner as if the user had |
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| 61 | executed it at the BarnOwl command prompt. If the command returns a |
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| 62 | value, return it as a string, otherwise return undef. |
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| 63 | |
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| 64 | =head2 getcurmsg |
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| 65 | |
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| 66 | Returns the current message as a C<BarnOwl::Message> subclass, or |
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| 67 | undef if there is no message selected |
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| 68 | =head2 getnumcols |
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| 69 | |
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| 70 | Returns the width of the display window BarnOwl is currently using |
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| 71 | |
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| 72 | =head2 getidletime |
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| 73 | |
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| 74 | Returns the length of time since the user has pressed a key, in |
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| 75 | seconds. |
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| 76 | |
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| 77 | =head2 zephyr_getrealm |
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| 78 | |
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| 79 | Returns the zephyr realm barnowl is running in |
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| 80 | |
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| 81 | =head2 zephyr_getsender |
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| 82 | |
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| 83 | Returns the fully-qualified name of the zephyr sender barnowl is |
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| 84 | running as, e.g. C<nelhage@ATHENA.MIT.EDU> |
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| 85 | |
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| 86 | =head2 zephyr_zwrite COMMAND MESSAGE |
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| 87 | |
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| 88 | Sends a zephyr programmatically. C<COMMAND> should be a C<zwrite> |
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| 89 | command line, and C<MESSAGE> is the zephyr body to send. |
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| 90 | |
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| 91 | =head2 ztext_stylestrip STRING |
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| 92 | |
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| 93 | Strips zephyr formatting from a string and returns the result |
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| 94 | |
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| 95 | =head2 zephyr_getsubs |
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| 96 | |
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| 97 | Returns the list of subscription triples <class,instance,recipient>, |
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| 98 | separated by newlines. |
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| 99 | |
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| 100 | =head2 queue_message MESSAGE |
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| 101 | |
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| 102 | Enqueue a message in the BarnOwl message list, logging it and |
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| 103 | processing it appropriately. C<MESSAGE> should be an instance of |
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| 104 | BarnOwl::Message or a subclass. |
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| 105 | |
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| 106 | =head2 admin_message HEADER BODY |
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| 107 | |
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| 108 | Display a BarnOwl B<Admin> message, with the given header and body. |
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| 109 | |
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| 110 | =head2 start_question PROMPT CALLBACK |
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| 111 | |
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| 112 | Displays C<PROMPT> on the screen and lets the user enter a line of |
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| 113 | text, and calls C<CALLBACK>, which must be a perl subroutine |
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| 114 | reference, with the text the user entered |
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| 115 | |
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| 116 | =head2 start_password PROMPT CALLBACK |
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| 117 | |
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| 118 | Like C<start_question>, but echoes the user's input as C<*>s when they |
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| 119 | input. |
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| 120 | |
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| 121 | =head2 start_edit_win PROMPT CALLBACK |
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| 122 | |
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| 123 | Like C<start_question>, but displays C<PROMPT> on a line of its own |
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| 124 | and opens the editwin. If the user cancels the edit win, C<CALLBACK> |
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| 125 | is not invoked. |
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| 126 | |
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| 127 | =head2 get_data_dir |
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| 128 | |
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| 129 | Returns the BarnOwl system data directory, where system libraries and |
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| 130 | modules are stored |
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| 131 | |
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| 132 | =head2 get_config_dir |
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| 133 | |
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| 134 | Returns the BarnOwl user configuration directory, where user modules |
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| 135 | and configuration are stored (by default, C<$HOME/.owl>) |
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| 136 | |
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| 137 | =head2 popless_text TEXT |
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| 138 | |
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| 139 | Show a popup window containing the given C<TEXT> |
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| 140 | |
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| 141 | =head2 popless_ztext TEXT |
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| 142 | |
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| 143 | Show a popup window containing the provided zephyr-formatted C<TEXT> |
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| 144 | |
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| 145 | =head2 error STRING |
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| 146 | |
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| 147 | Reports an error and log it in `show errors'. Note that in any |
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| 148 | callback or hook called in perl code from BarnOwl, a C<die> will be |
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| 149 | caught and passed to C<error>. |
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| 150 | |
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[eede1bf] | 151 | =head2 debug STRING |
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| 152 | |
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| 153 | Logs a debugging message to BarnOwl's debug log |
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| 154 | |
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[ee183be] | 155 | =head2 getnumcolors |
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| 156 | |
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| 157 | Returns the number of colors this BarnOwl is capable of displaying |
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| 158 | |
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| 159 | =head2 add_dispatch FD CALLBACK |
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| 160 | |
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| 161 | Adds a file descriptor to C<BarnOwl>'s internal C<select()> |
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| 162 | loop. C<CALLBACK> will be invoked whenever data is available to be |
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| 163 | read from C<FD>. |
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| 164 | |
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[ffc4df6] | 165 | C<add_dispatch> has been deprecated in favor of C<add_io_dispatch>, |
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| 166 | and is now a wrapper for it called with C<mode> set to C<'r'>. |
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| 167 | |
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| 168 | =cut |
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| 169 | |
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| 170 | sub add_dispatch { |
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| 171 | my $fd = shift; |
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| 172 | my $cb = shift; |
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| 173 | add_io_dispatch($fd, 'r', $cb); |
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| 174 | } |
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| 175 | |
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[ee183be] | 176 | =head2 remove_dispatch FD |
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| 177 | |
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| 178 | Remove a file descriptor previously registered via C<add_dispatch> |
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| 179 | |
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[ffc4df6] | 180 | C<remove_dispatch> has been deprecated in favor of |
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| 181 | C<remove_io_dispatch>. |
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| 182 | |
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| 183 | =cut |
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| 184 | |
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| 185 | *remove_dispatch = \&remove_io_dispatch; |
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| 186 | |
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| 187 | =head2 add_io_dispatch FD MODE CB |
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| 188 | |
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| 189 | Adds a file descriptor to C<BarnOwl>'s internal C<select()> |
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| 190 | loop. <MODE> can be 'r', 'w', or 'rw'. C<CALLBACK> will be invoked |
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| 191 | whenever C<FD> becomes ready, as specified by <MODE>. |
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| 192 | |
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| 193 | Only one callback can be registered per FD. If a new callback is |
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| 194 | registered, the old one is removed. |
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| 195 | |
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| 196 | =cut |
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| 197 | |
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| 198 | sub add_io_dispatch { |
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| 199 | my $fd = shift; |
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| 200 | my $modeStr = shift; |
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| 201 | my $cb = shift; |
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| 202 | my $mode = 0; |
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| 203 | |
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| 204 | $mode |= 0x1 if ($modeStr =~ /r/i); # Read |
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| 205 | $mode |= 0x2 if ($modeStr =~ /w/i); # Write |
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| 206 | if ($mode) { |
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| 207 | $mode |= 0x4; # Exceptional |
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| 208 | BarnOwl::Internal::add_io_dispatch($fd, $mode, $cb); |
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| 209 | } else { |
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| 210 | die("Invalid I/O Dispatch mode: $modeStr"); |
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| 211 | } |
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| 212 | } |
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| 213 | |
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| 214 | =head2 remove_io_dispatch FD |
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| 215 | |
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| 216 | Remove a file descriptor previously registered via C<add_io_dispatch> |
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| 217 | |
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[ee183be] | 218 | =head2 create_style NAME OBJECT |
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| 219 | |
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| 220 | Creates a new barnowl style with the given NAME defined by the given |
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| 221 | object. The object must have a C<description> method which returns a |
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| 222 | string description of the style, and a and C<format_message> method |
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| 223 | which accepts a C<BarnOwl::Message> object and returns a string that |
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| 224 | is the result of formatting the message for display. |
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| 225 | |
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[4df918b] | 226 | =head2 redisplay |
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| 227 | |
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| 228 | Redraw all of the messages on screen. This is useful if you've just |
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| 229 | changed how a style renders messages. |
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| 230 | |
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[ee183be] | 231 | =cut |
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| 232 | |
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| 233 | # perlconfig.c will set this to the value of the -c command-line |
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| 234 | # switch, if present. |
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| 235 | our $configfile; |
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| 236 | |
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[d7bcff8] | 237 | our @all_commands; |
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| 238 | |
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[ee183be] | 239 | if(!$configfile && -f $ENV{HOME} . "/.barnowlconf") { |
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| 240 | $configfile = $ENV{HOME} . "/.barnowlconf"; |
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| 241 | } |
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| 242 | $configfile ||= $ENV{HOME}."/.owlconf"; |
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| 243 | |
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| 244 | # populate global variable space for legacy owlconf files |
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| 245 | sub _receive_msg_legacy_wrap { |
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| 246 | my ($m) = @_; |
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| 247 | $m->legacy_populate_global(); |
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| 248 | return &BarnOwl::Hooks::_receive_msg($m); |
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| 249 | } |
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| 250 | |
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| 251 | =head2 new_command NAME FUNC [{ARGS}] |
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| 252 | |
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| 253 | Add a new owl command. When owl executes the command NAME, FUNC will |
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| 254 | be called with the arguments passed to the command, with NAME as the |
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| 255 | first argument. |
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| 256 | |
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| 257 | ARGS should be a hashref containing any or all of C<summary>, |
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| 258 | C<usage>, or C<description> keys: |
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| 259 | |
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| 260 | =over 4 |
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| 261 | |
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| 262 | =item summary |
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| 263 | |
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| 264 | A one-line summary of the purpose of the command |
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| 265 | |
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| 266 | =item usage |
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| 267 | |
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| 268 | A one-line usage synopsis, showing available options and syntax |
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| 269 | |
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| 270 | =item description |
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| 271 | |
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| 272 | A longer description of the syntax and semantics of the command, |
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| 273 | explaining usage and options |
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| 274 | |
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| 275 | =back |
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| 276 | |
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| 277 | =cut |
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| 278 | |
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| 279 | sub new_command { |
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| 280 | my $name = shift; |
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| 281 | my $func = shift; |
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| 282 | my $args = shift || {}; |
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| 283 | my %args = ( |
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| 284 | summary => "", |
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| 285 | usage => "", |
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| 286 | description => "", |
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| 287 | %{$args} |
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| 288 | ); |
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| 289 | |
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| 290 | BarnOwl::Internal::new_command($name, $func, $args{summary}, $args{usage}, $args{description}); |
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| 291 | } |
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| 292 | |
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| 293 | =head2 new_variable_int NAME [{ARGS}] |
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| 294 | |
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| 295 | =head2 new_variable_bool NAME [{ARGS}] |
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| 296 | |
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| 297 | =head2 new_variable_string NAME [{ARGS}] |
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| 298 | |
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| 299 | Add a new owl variable, either an int, a bool, or a string, with the |
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| 300 | specified name. |
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| 301 | |
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| 302 | ARGS can optionally contain the following keys: |
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| 303 | |
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| 304 | =over 4 |
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| 305 | |
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| 306 | =item default |
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| 307 | |
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| 308 | The default and initial value for the variable |
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| 309 | |
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| 310 | =item summary |
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| 311 | |
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| 312 | A one-line summary of the variable's purpose |
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| 313 | |
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| 314 | =item description |
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| 315 | |
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| 316 | A longer description of the function of the variable |
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| 317 | |
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| 318 | =back |
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| 319 | |
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| 320 | =cut |
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| 321 | |
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| 322 | sub new_variable_int { |
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| 323 | unshift @_, \&BarnOwl::Internal::new_variable_int, 0; |
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| 324 | goto \&_new_variable; |
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| 325 | } |
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| 326 | |
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| 327 | sub new_variable_bool { |
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| 328 | unshift @_, \&BarnOwl::Internal::new_variable_bool, 0; |
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| 329 | goto \&_new_variable; |
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| 330 | } |
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| 331 | |
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| 332 | sub new_variable_string { |
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| 333 | unshift @_, \&BarnOwl::Internal::new_variable_string, ""; |
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| 334 | goto \&_new_variable; |
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| 335 | } |
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| 336 | |
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| 337 | sub _new_variable { |
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| 338 | my $func = shift; |
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| 339 | my $default_default = shift; |
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| 340 | my $name = shift; |
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| 341 | my $args = shift || {}; |
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| 342 | my %args = ( |
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| 343 | summary => "", |
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| 344 | description => "", |
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| 345 | default => $default_default, |
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| 346 | %{$args}); |
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| 347 | $func->($name, $args{default}, $args{summary}, $args{description}); |
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| 348 | } |
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| 349 | |
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[fc92e6e2] | 350 | =head2 quote LIST |
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[ee183be] | 351 | |
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[fc92e6e2] | 352 | Quotes each of the strings in LIST and returns a string that will be |
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| 353 | correctly decoded to LIST by the BarnOwl command parser. For example: |
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| 354 | |
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| 355 | quote('zwrite', 'andersk', '-m', 'Hello, world!') |
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| 356 | # returns "zwrite andersk -m 'Hello, world!'" |
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[ee183be] | 357 | |
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| 358 | =cut |
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| 359 | |
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| 360 | sub quote { |
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[fc92e6e2] | 361 | my @quoted; |
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| 362 | for my $str (@_) { |
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| 363 | if ($str eq '') { |
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| 364 | push @quoted, "''"; |
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[ef4700c] | 365 | } elsif ($str !~ /['" \n\t]/) { |
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[fc92e6e2] | 366 | push @quoted, "$str"; |
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| 367 | } elsif ($str !~ /'/) { |
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| 368 | push @quoted, "'$str'"; |
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| 369 | } else { |
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| 370 | (my $qstr = $str) =~ s/"/"'"'"/g; |
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| 371 | push @quoted, '"' . $qstr . '"'; |
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| 372 | } |
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[ee183be] | 373 | } |
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[fc92e6e2] | 374 | return join(' ', @quoted); |
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[ee183be] | 375 | } |
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| 376 | |
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[22b54a7] | 377 | =head2 Modify filters by appending text |
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| 378 | |
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| 379 | =cut |
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| 380 | |
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[cff58b4] | 381 | sub register_builtin_commands { |
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[0b2afba] | 382 | # Filter modification |
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[cff58b4] | 383 | BarnOwl::new_command("filterappend", |
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| 384 | sub { filter_append_helper('appending', '', @_); }, |
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| 385 | { |
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| 386 | summary => "append '<text>' to filter", |
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| 387 | usage => "filterappend <filter> <text>", |
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| 388 | }); |
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| 389 | |
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| 390 | BarnOwl::new_command("filterand", |
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| 391 | sub { filter_append_helper('and-ing', 'and', @_); }, |
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| 392 | { |
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| 393 | summary => "append 'and <text>' to filter", |
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| 394 | usage => "filterand <filter> <text>", |
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| 395 | }); |
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| 396 | |
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| 397 | BarnOwl::new_command("filteror", |
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| 398 | sub { filter_append_helper('or-ing', 'or', @_); }, |
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| 399 | { |
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| 400 | summary => "append 'or <text>' to filter", |
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| 401 | usage => "filteror <filter> <text>", |
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| 402 | }); |
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| 403 | |
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[0b2afba] | 404 | # Date formatting |
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| 405 | BarnOwl::new_command("showdate", |
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| 406 | sub { BarnOwl::time_format('showdate', '%Y-%m-%d %H:%M'); }, |
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| 407 | { |
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| 408 | summary => "Show date in timestamps for supporting styles.", |
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| 409 | usage => "showdate", |
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| 410 | }); |
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| 411 | |
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| 412 | BarnOwl::new_command("hidedate", |
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| 413 | sub { BarnOwl::time_format('hidedate', '%H:%M'); }, |
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| 414 | { |
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| 415 | summary => "Don't show date in timestamps for supporting styles.", |
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| 416 | usage => "hidedate", |
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| 417 | }); |
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| 418 | |
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| 419 | BarnOwl::new_command("timeformat", |
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| 420 | \&BarnOwl::time_format, |
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| 421 | { |
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| 422 | summary => "Set the format for timestamps and re-display messages", |
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| 423 | usage => "timeformat <format>", |
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| 424 | }); |
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| 425 | |
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[6700c605] | 426 | # Receive window scrolling |
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| 427 | BarnOwl::new_command("recv:shiftleft", |
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| 428 | \&BarnOwl::recv_shift_left, |
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| 429 | { |
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| 430 | summary => "scrolls receive window to the left", |
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| 431 | usage => "recv:shiftleft [<amount>]", |
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| 432 | description => <<END_DESCR |
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| 433 | By default, scroll left by 10 columns. Passing no arguments or 0 activates this default behavior. |
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| 434 | Otherwise, scroll by the number of columns specified as the argument. |
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| 435 | END_DESCR |
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| 436 | }); |
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| 437 | |
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| 438 | BarnOwl::new_command("recv:shiftright", |
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| 439 | \&BarnOwl::recv_shift_right, |
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| 440 | { |
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| 441 | summary => "scrolls receive window to the right", |
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| 442 | usage => "recv:shiftright [<amount>]", |
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| 443 | description => <<END_DESCR |
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| 444 | By default, scroll right by 10 columns. Passing no arguments or 0 activates this default behavior. |
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| 445 | Otherwise, scroll by the number of columns specified as the argument. |
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| 446 | END_DESCR |
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| 447 | }); |
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| 448 | |
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[cff58b4] | 449 | } |
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| 450 | |
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| 451 | $BarnOwl::Hooks::startup->add("BarnOwl::register_builtin_commands"); |
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[22b54a7] | 452 | |
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| 453 | =head3 filter_append_helper ACTION SEP FUNC FILTER APPEND_TEXT |
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| 454 | |
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| 455 | Helper to append to filters. |
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| 456 | |
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| 457 | =cut |
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| 458 | |
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| 459 | sub filter_append_helper |
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| 460 | { |
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| 461 | my $action = shift; |
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| 462 | my $sep = shift; |
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| 463 | my $func = shift; |
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| 464 | my $filter = shift; |
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| 465 | my @append = @_; |
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| 466 | my $oldfilter = BarnOwl::getfilter($filter); |
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| 467 | chomp $oldfilter; |
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[0b5168d] | 468 | my $newfilter = "$oldfilter $sep " . quote(@append); |
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| 469 | my $msgtext = "To filter " . quote($filter) . " $action\n" . quote(@append) . "\nto get\n$newfilter"; |
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[22b54a7] | 470 | if (BarnOwl::getvar('showfilterchange') eq 'on') { |
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| 471 | BarnOwl::admin_message("Filter", $msgtext); |
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| 472 | } |
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[1b9a163] | 473 | set_filter($filter, $newfilter); |
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[22b54a7] | 474 | return; |
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| 475 | } |
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| 476 | BarnOwl::new_variable_bool("showfilterchange", |
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| 477 | { default => 1, |
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| 478 | summary => 'Show modifications to filters by filterappend and friends.'}); |
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[ee183be] | 479 | |
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[1b9a163] | 480 | sub set_filter |
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| 481 | { |
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| 482 | my $filtername = shift; |
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| 483 | my $filtertext = shift; |
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| 484 | my $cmd = 'filter ' . BarnOwl::quote($filtername) . ' ' . $filtertext; |
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| 485 | BarnOwl::command($cmd); |
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| 486 | } |
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| 487 | |
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[0b2afba] | 488 | =head3 time_format FORMAT |
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| 489 | |
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| 490 | Set the format for displaying times (variable timeformat) and redisplay |
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| 491 | messages. |
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| 492 | |
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| 493 | =cut |
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| 494 | |
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[d694c55] | 495 | my $timeformat = '%H:%M'; |
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[0b2afba] | 496 | |
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| 497 | sub time_format |
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| 498 | { |
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| 499 | my $function = shift; |
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| 500 | my $format = shift; |
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| 501 | if(!$format) |
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| 502 | { |
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| 503 | return $timeformat; |
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| 504 | } |
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| 505 | if(shift) |
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| 506 | { |
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| 507 | return "Wrong number of arguments for command"; |
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| 508 | } |
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| 509 | $timeformat = $format; |
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| 510 | redisplay(); |
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| 511 | } |
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| 512 | |
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[6700c605] | 513 | =head3 Receive window scrolling |
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| 514 | |
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| 515 | Permit scrolling the receive window left or right by arbitrary |
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| 516 | amounts (with a default of 10 characters). |
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| 517 | |
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| 518 | =cut |
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| 519 | |
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| 520 | sub recv_shift_left |
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| 521 | { |
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| 522 | my $func = shift; |
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| 523 | my $delta = shift; |
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[365950b] | 524 | $delta = 10 unless defined($delta) && int($delta) > 0; |
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[6700c605] | 525 | my $shift = BarnOwl::recv_getshift(); |
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| 526 | if($shift > 0) { |
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| 527 | BarnOwl::recv_setshift(max(0, $shift-$delta)); |
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| 528 | } else { |
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| 529 | return "Already full left"; |
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| 530 | } |
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| 531 | } |
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| 532 | |
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| 533 | sub recv_shift_right |
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| 534 | { |
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| 535 | my $func = shift; |
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| 536 | my $delta = shift; |
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| 537 | $delta = 10 unless int($delta) > 0; |
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| 538 | my $shift = BarnOwl::recv_getshift(); |
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| 539 | BarnOwl::recv_setshift($shift+$delta); |
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| 540 | } |
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| 541 | |
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[de3f641] | 542 | =head3 default_zephyr_signature |
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| 543 | |
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| 544 | Compute the default zephyr signature. |
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| 545 | |
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| 546 | =cut |
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| 547 | |
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| 548 | sub default_zephyr_signature |
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| 549 | { |
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[77c87b2] | 550 | my $zsig = getvar('zsig'); |
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[3c428d4] | 551 | if (!$zsig) { |
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| 552 | if (my $zsigproc = getvar('zsigproc')) { |
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| 553 | $zsig = `$zsigproc`; |
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| 554 | } elsif (!defined($zsig = get_zephyr_variable('zwrite-signature'))) { |
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| 555 | $zsig = ((getpwuid($<))[6]); |
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| 556 | $zsig =~ s/,.*//; |
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| 557 | } |
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[de3f641] | 558 | } |
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[77c87b2] | 559 | chomp($zsig); |
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| 560 | return $zsig; |
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[de3f641] | 561 | } |
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| 562 | |
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[7589f0a] | 563 | # Stub for owl::startup / BarnOwl::startup, so it isn't bound to the |
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| 564 | # startup command. This may be redefined in a user's configfile. |
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| 565 | sub startup |
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| 566 | { |
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| 567 | } |
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| 568 | |
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[ee183be] | 569 | 1; |
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