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2 | |
| 3 | rxvtperl - rxvt-unicode's embedded perl interpreter |
3 | rxvtperl - rxvt-unicode's embedded perl interpreter |
| 4 | |
4 | |
| 5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
| 6 | |
6 | |
| 7 | * Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically. |
7 | # create a file grab_test in $HOME: |
| 8 | |
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| 9 | * Each script will only be loaded once, even in urxvtd, and will be valid |
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| 10 | globally. |
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| 11 | |
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| 12 | * Scripts are evaluated in a 'use strict' and 'use utf8' environment, and |
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| 13 | thus must be encoded as UTF-8. |
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| 14 | |
8 | |
| 15 | sub on_sel_grab { |
9 | sub on_sel_grab { |
| 16 | warn "you selected ", $_[0]->selection; |
10 | warn "you selected ", $_[0]->selection; |
| 17 | () |
11 | () |
| 18 | } |
12 | } |
| 19 | |
13 | |
| 20 | 1 |
14 | # start a @@RXVT_NAME@@ using it: |
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15 | |
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16 | @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test |
| 21 | |
17 | |
| 22 | =head1 DESCRIPTION |
18 | =head1 DESCRIPTION |
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19 | |
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20 | Everytime a terminal object gets created, scripts specified via the |
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21 | C<perl> resource are loaded and associated with it. |
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22 | |
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23 | Scripts are compiled in a 'use strict' and 'use utf8' environment, and |
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24 | thus must be encoded as UTF-8. |
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25 | |
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26 | Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where |
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27 | scripts will be shared (But not enabled) for all terminals. |
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28 | |
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29 | =head2 General API Considerations |
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30 | |
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31 | All objects (such as terminals, time watchers etc.) are typical |
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32 | reference-to-hash objects. The hash can be used to store anything you |
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33 | like. All members starting with an underscore (such as C<_ptr> or |
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34 | C<_hook>) are reserved for internal uses and must not be accessed or |
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35 | modified). |
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36 | |
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37 | When objects are destroyed on the C++ side, the perl object hashes are |
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38 | emptied, so its best to store related objects such as time watchers and |
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39 | the like inside the terminal object so they get destroyed as soon as the |
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40 | terminal is destroyed. |
| 23 | |
41 | |
| 24 | =head2 Hooks |
42 | =head2 Hooks |
| 25 | |
43 | |
| 26 | The following subroutines can be declared in loaded scripts, and will be called |
44 | The following subroutines can be declared in loaded scripts, and will be called |
| 27 | whenever the relevant event happens. |
45 | whenever the relevant event happens. |
| … | |
… | |
| 120 | costs! The only time this is acceptable is when the terminal process |
138 | costs! The only time this is acceptable is when the terminal process |
| 121 | starts up. |
139 | starts up. |
| 122 | |
140 | |
| 123 | =item urxvt::warn $string |
141 | =item urxvt::warn $string |
| 124 | |
142 | |
| 125 | Calls C<rxvt_warn> witht eh given string which should not include a |
143 | Calls C<rxvt_warn> with the given string which should not include a |
| 126 | newline. The module also overwrites the C<warn> builtin with a function |
144 | newline. The module also overwrites the C<warn> builtin with a function |
| 127 | that calls this function. |
145 | that calls this function. |
| 128 | |
146 | |
| 129 | Using this function has the advantage that its output ends up in the |
147 | Using this function has the advantage that its output ends up in the |
| 130 | correct place, e.g. on stderr of the connecting urxvtc client. |
148 | correct place, e.g. on stderr of the connecting urxvtc client. |
| 131 | |
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| 132 | =item $cellwidth = urxvt::wcswidth $string |
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| 133 | |
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| 134 | Returns the number of screen-cells this string would need. Correctly |
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| 135 | accounts for wide and combining characters. |
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| 136 | |
149 | |
| 137 | =item $time = urxvt::NOW |
150 | =item $time = urxvt::NOW |
| 138 | |
151 | |
| 139 | Returns the "current time" (as per the event loop). |
152 | Returns the "current time" (as per the event loop). |
| 140 | |
153 | |
| … | |
… | |
| 158 | unless $msg =~ /\n$/; |
171 | unless $msg =~ /\n$/; |
| 159 | urxvt::warn ($msg); |
172 | urxvt::warn ($msg); |
| 160 | }; |
173 | }; |
| 161 | } |
174 | } |
| 162 | |
175 | |
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176 | my @hook_count; |
| 163 | my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10; |
177 | my $verbosity = $ENV{URXVT_PERL_VERBOSITY}; |
| 164 | |
178 | |
| 165 | sub verbose { |
179 | sub verbose { |
| 166 | my ($level, $msg) = @_; |
180 | my ($level, $msg) = @_; |
| 167 | warn "$msg\n"; #d# |
181 | warn "$msg\n" if $level <= $verbosity; |
| 168 | } |
182 | } |
| 169 | |
183 | |
| 170 | my @invoke_cb; |
184 | # find on_xxx subs in the package and register them |
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185 | # as hooks |
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186 | sub register_package($) { |
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187 | my ($pkg) = @_; |
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188 | |
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189 | for my $htype (0.. $#HOOKNAME) { |
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190 | my $name = $HOOKNAME[$htype]; |
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191 | |
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192 | my $ref = $pkg->can ("on_" . lc $name) |
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193 | or next; |
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194 | |
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195 | $term->{_hook}[$htype]{$ref*1} = $ref; |
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196 | $hook_count[$htype]++ |
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197 | or set_should_invoke $htype, 1; |
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198 | } |
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199 | } |
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200 | |
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201 | my $script_pkg = "script0000"; |
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202 | my %script_pkg; |
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203 | |
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204 | # load a single script into its own package, once only |
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205 | sub script_package($) { |
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206 | my ($path) = @_; |
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207 | |
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208 | $script_pkg{$path} ||= do { |
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209 | my $pkg = "urxvt::" . ($script_pkg++); |
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210 | |
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211 | verbose 3, "loading script '$path' into package '$pkg'"; |
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212 | |
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213 | open my $fh, "<:raw", $path |
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214 | or die "$path: $!"; |
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215 | |
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216 | my $source = "package $pkg; use strict; use utf8;\n" |
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217 | . "#line 1 \"$path\"\n{\n" |
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218 | . (do { local $/; <$fh> }) |
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219 | . "\n};\n1"; |
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220 | |
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221 | eval $source or die "$path: $@"; |
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222 | |
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223 | $pkg |
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224 | } |
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225 | } |
| 171 | |
226 | |
| 172 | # called by the rxvt core |
227 | # called by the rxvt core |
| 173 | sub invoke { |
228 | sub invoke { |
| 174 | local $term = shift; |
229 | local $term = shift; |
| 175 | my $htype = shift; |
230 | my $htype = shift; |
| 176 | |
231 | |
| 177 | my $cb = $invoke_cb[$htype]; |
232 | if ($htype == 0) { # INIT |
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233 | my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); |
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234 | |
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235 | for my $ext (split /:/, $term->resource ("perl_ext")) { |
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236 | my @files = grep -f $_, map "$_/$ext", @dirs; |
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237 | |
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238 | if (@files) { |
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239 | register_package script_package $files[0]; |
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240 | } else { |
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241 | warn "perl extension '$ext' not found in perl library search path\n"; |
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242 | } |
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243 | } |
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244 | |
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245 | } elsif ($htype == 1) { # DESTROY |
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246 | if (my $hook = $term->{_hook}) { |
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247 | for my $htype (0..$#$hook) { |
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248 | $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } |
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249 | or set_should_invoke $htype, 0; |
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250 | } |
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251 | } |
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252 | } |
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253 | |
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254 | my $cb = $term->{_hook}[$htype] |
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255 | or return; |
| 178 | |
256 | |
| 179 | verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")" |
257 | verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")" |
| 180 | if $verbosity >= 10; |
258 | if $verbosity >= 10; |
| 181 | |
259 | |
| 182 | while (my ($k, $v) = each %$cb) { |
260 | while (my ($k, $v) = each %$cb) { |
| … | |
… | |
| 184 | } |
262 | } |
| 185 | |
263 | |
| 186 | 0 |
264 | 0 |
| 187 | } |
265 | } |
| 188 | |
266 | |
| 189 | # find on_xxx subs in the package and register them |
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| 190 | # as hooks |
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| 191 | sub register_package($) { |
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| 192 | my ($pkg) = @_; |
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| 193 | |
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| 194 | for my $hook (0.. $#HOOKNAME) { |
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| 195 | my $name = $HOOKNAME[$hook]; |
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| 196 | |
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| 197 | my $ref = $pkg->can ("on_" . lc $name) |
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| 198 | or next; |
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| 199 | |
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| 200 | $invoke_cb[$hook]{$ref*1} = $ref; |
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| 201 | set_should_invoke $hook, 1; |
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| 202 | } |
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| 203 | } |
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| 204 | |
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| 205 | my $script_pkg = "script0000"; |
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| 206 | my %script_pkg; |
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| 207 | |
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| 208 | # load a single script into its own package, once only |
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| 209 | sub load_script($) { |
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| 210 | my ($path) = @_; |
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| 211 | |
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| 212 | $script_pkg{$path} ||= do { |
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| 213 | my $pkg = $script_pkg++; |
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| 214 | verbose 3, "loading script '$path' into package '$pkg'"; |
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| 215 | |
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| 216 | open my $fh, "<:raw", $path |
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| 217 | or die "$path: $!"; |
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| 218 | |
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| 219 | eval "package $pkg; use strict; use utf8;\n" |
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| 220 | . "#line 1 \"$path\"\n" |
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| 221 | . do { local $/; <$fh> } |
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| 222 | or die "$path: $@"; |
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| 223 | |
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| 224 | register_package $pkg; |
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| 225 | |
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| 226 | $pkg |
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| 227 | }; |
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| 228 | } |
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| 229 | |
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| 230 | load_script $_ for grep -f $_, <$LIBDIR/perl-ext/*>; |
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| 231 | |
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| 232 | |
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| 233 | =back |
267 | =back |
| 234 | |
268 | |
| 235 | =head2 The C<urxvt::term> Class |
269 | =head2 The C<urxvt::term> Class |
| 236 | |
270 | |
| 237 | =over 4 |
271 | =over 4 |
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272 | |
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273 | =item $value = $term->resource ($name[, $newval]) |
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274 | |
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275 | Returns the current resource value associated with a given name and |
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276 | optionally sets a new value. Setting values is most useful in the C<init> |
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277 | hook. Unset resources are returned and accepted as C<undef>. |
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278 | |
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279 | The new value must be properly encoded to a suitable character encoding |
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280 | before passing it to this method. Similarly, the returned value may need |
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281 | to be converted from the used encoding to text. |
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282 | |
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283 | Resource names are as defined in F<src/rsinc.h>. Colours can be specified |
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284 | as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will |
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285 | likely change). |
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286 | |
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287 | Please note that resource strings will currently only be freed when the |
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288 | terminal is destroyed, so changing options frequently will eat memory. |
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289 | |
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290 | Here is a a likely non-exhaustive list of resource names, not all of which |
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291 | are supported in every build, please see the source to see the actual |
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292 | list: |
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293 | |
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294 | answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont |
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295 | borderLess color cursorBlink cursorUnderline cutchars delete_key |
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296 | display_name embed ext_bwidth fade font geometry hold iconName |
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297 | imFont imLocale inputMethod insecure int_bwidth intensityStyles |
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298 | italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier |
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299 | mouseWheelScrollPage name pastableTabs path perl_eval perl_ext |
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300 | perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd |
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301 | reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating |
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302 | scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput |
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303 | scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle |
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304 | shade term_name title transparent transparent_all tripleclickwords |
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305 | utmpInhibit visualBell |
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306 | |
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307 | =cut |
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308 | |
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309 | sub urxvt::term::resource($$;$) { |
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310 | my ($self, $name) = (shift, shift); |
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311 | unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); |
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312 | goto &urxvt::term::_resource; |
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313 | } |
| 238 | |
314 | |
| 239 | =item ($row, $col) = $term->selection_mark ([$row, $col]) |
315 | =item ($row, $col) = $term->selection_mark ([$row, $col]) |
| 240 | |
316 | |
| 241 | =item ($row, $col) = $term->selection_beg ([$row, $col]) |
317 | =item ($row, $col) = $term->selection_beg ([$row, $col]) |
| 242 | |
318 | |
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| 264 | my ($self, $x, $y, $text) = @_; |
340 | my ($self, $x, $y, $text) = @_; |
| 265 | |
341 | |
| 266 | my @lines = split /\n/, $text; |
342 | my @lines = split /\n/, $text; |
| 267 | |
343 | |
| 268 | my $w = 0; |
344 | my $w = 0; |
| 269 | for (map urxvt::wcswidth $_, @lines) { |
345 | for (map $self->strwidth ($_), @lines) { |
| 270 | $w = $_ if $w < $_; |
346 | $w = $_ if $w < $_; |
| 271 | } |
347 | } |
| 272 | |
348 | |
| 273 | $self->scr_overlay_new ($x, $y, $w, scalar @lines); |
349 | $self->scr_overlay_new ($x, $y, $w, scalar @lines); |
| 274 | $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; |
350 | $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; |
| … | |
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| 291 | position. |
367 | position. |
| 292 | |
368 | |
| 293 | =item $term->scr_overlay_set ($x, $y, $text) |
369 | =item $term->scr_overlay_set ($x, $y, $text) |
| 294 | |
370 | |
| 295 | Write a string at the given position into the overlay. |
371 | Write a string at the given position into the overlay. |
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372 | |
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373 | =item $cellwidth = $term->strwidth $string |
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374 | |
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375 | Returns the number of screen-cells this string would need. Correctly |
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376 | accounts for wide and combining characters. |
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377 | |
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378 | =item $octets = $term->locale_encode $string |
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379 | |
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380 | Convert the given text string into the corresponding locale encoding. |
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381 | |
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382 | =item $string = $term->locale_decode $octets |
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383 | |
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384 | Convert the given locale-encoded octets into a perl string. |
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385 | |
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386 | =item $term->tt_write ($octets) |
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387 | |
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388 | Write the octets given in C<$data> to the tty (i.e. as program input). To |
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389 | pass characters instead of octets, you should convetr you strings first to |
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390 | the locale-specific encoding using C<< $term->locale_encode >>. |
| 296 | |
391 | |
| 297 | =back |
392 | =back |
| 298 | |
393 | |
| 299 | =head2 The C<urxvt::timer> Class |
394 | =head2 The C<urxvt::timer> Class |
| 300 | |
395 | |
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| 391 | |
486 | |
| 392 | Stop watching for events on the given filehandle. |
487 | Stop watching for events on the given filehandle. |
| 393 | |
488 | |
| 394 | =back |
489 | =back |
| 395 | |
490 | |
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491 | =head1 ENVIRONMENT |
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492 | |
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493 | =head2 URXVT_PERL_VERBOSITY |
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494 | |
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495 | This variable controls the verbosity level of the perl extension. Higher |
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496 | numbers indicate more verbose output. |
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497 | |
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498 | =over 4 |
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499 | |
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500 | =item 0 - only fatal messages |
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501 | |
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502 | =item 3 - script loading and management |
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503 | |
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504 | =item 10 - all events received |
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505 | |
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506 | =back |
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507 | |
| 396 | =head1 AUTHOR |
508 | =head1 AUTHOR |
| 397 | |
509 | |
| 398 | Marc Lehmann <pcg@goof.com> |
510 | Marc Lehmann <pcg@goof.com> |
| 399 | http://software.schmorp.de/pkg/rxvt-unicode |
511 | http://software.schmorp.de/pkg/rxvt-unicode |
| 400 | |
512 | |
