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1 | ############################################################################# |
2 | # Pod/Checker.pm -- check pod documents for syntax errors |
3 | # |
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4 | # Copyright (C) 1994-2000 by Bradford Appleton. All rights reserved. |
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5 | # This file is part of "PodParser". PodParser is free software; |
6 | # you can redistribute it and/or modify it under the same terms |
7 | # as Perl itself. |
8 | ############################################################################# |
9 | |
10 | package Pod::Checker; |
11 | |
12 | use vars qw($VERSION); |
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13 | $VERSION = "1.43_01"; ## Current version of this package |
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14 | require 5.005; ## requires this Perl version or later |
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15 | |
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16 | use Pod::ParseUtils; ## for hyperlinks and lists |
17 | |
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18 | =head1 NAME |
19 | |
20 | Pod::Checker, podchecker() - check pod documents for syntax errors |
21 | |
22 | =head1 SYNOPSIS |
23 | |
24 | use Pod::Checker; |
25 | |
e3237417 |
26 | $syntax_okay = podchecker($filepath, $outputpath, %options); |
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27 | |
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28 | my $checker = new Pod::Checker %options; |
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29 | $checker->parse_from_file($filepath, \*STDERR); |
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30 | |
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31 | =head1 OPTIONS/ARGUMENTS |
32 | |
33 | C<$filepath> is the input POD to read and C<$outputpath> is |
34 | where to write POD syntax error messages. Either argument may be a scalar |
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35 | indicating a file-path, or else a reference to an open filehandle. |
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36 | If unspecified, the input-file it defaults to C<\*STDIN>, and |
37 | the output-file defaults to C<\*STDERR>. |
38 | |
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39 | =head2 podchecker() |
40 | |
41 | This function can take a hash of options: |
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42 | |
43 | =over 4 |
44 | |
45 | =item B<-warnings> =E<gt> I<val> |
46 | |
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47 | Turn warnings on/off. I<val> is usually 1 for on, but higher values |
48 | trigger additional warnings. See L<"Warnings">. |
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49 | |
50 | =back |
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51 | |
52 | =head1 DESCRIPTION |
53 | |
54 | B<podchecker> will perform syntax checking of Perl5 POD format documentation. |
55 | |
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56 | Curious/ambitious users are welcome to propose additional features they wish |
57 | to see in B<Pod::Checker> and B<podchecker> and verify that the checks are |
58 | consistent with L<perlpod>. |
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59 | |
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60 | The following checks are currently performed: |
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61 | |
62 | =over 4 |
63 | |
64 | =item * |
65 | |
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66 | Unknown '=xxxx' commands, unknown 'XE<lt>...E<gt>' interior-sequences, |
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67 | and unterminated interior sequences. |
68 | |
69 | =item * |
70 | |
71 | Check for proper balancing of C<=begin> and C<=end>. The contents of such |
72 | a block are generally ignored, i.e. no syntax checks are performed. |
e3237417 |
73 | |
74 | =item * |
75 | |
76 | Check for proper nesting and balancing of C<=over>, C<=item> and C<=back>. |
77 | |
78 | =item * |
79 | |
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80 | Check for same nested interior-sequences (e.g. |
81 | C<LE<lt>...LE<lt>...E<gt>...E<gt>>). |
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82 | |
83 | =item * |
84 | |
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85 | Check for malformed or non-existing entities C<EE<lt>...E<gt>>. |
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86 | |
87 | =item * |
88 | |
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89 | Check for correct syntax of hyperlinks C<LE<lt>...E<gt>>. See L<perlpod> |
90 | for details. |
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91 | |
92 | =item * |
93 | |
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94 | Check for unresolved document-internal links. This check may also reveal |
95 | misspelled links that seem to be internal links but should be links |
96 | to something else. |
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97 | |
98 | =back |
99 | |
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100 | =head1 DIAGNOSTICS |
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101 | |
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102 | =head2 Errors |
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103 | |
104 | =over 4 |
105 | |
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106 | =item * empty =headn |
107 | |
108 | A heading (C<=head1> or C<=head2>) without any text? That ain't no |
109 | heading! |
110 | |
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111 | =item * =over on line I<N> without closing =back |
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112 | |
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113 | The C<=over> command does not have a corresponding C<=back> before the |
114 | next heading (C<=head1> or C<=head2>) or the end of the file. |
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115 | |
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116 | =item * =item without previous =over |
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117 | |
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118 | =item * =back without previous =over |
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119 | |
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120 | An C<=item> or C<=back> command has been found outside a |
121 | C<=over>/C<=back> block. |
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122 | |
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123 | =item * No argument for =begin |
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124 | |
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125 | A C<=begin> command was found that is not followed by the formatter |
126 | specification. |
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127 | |
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128 | =item * =end without =begin |
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129 | |
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130 | A standalone C<=end> command was found. |
131 | |
132 | =item * Nested =begin's |
133 | |
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134 | There were at least two consecutive C<=begin> commands without |
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135 | the corresponding C<=end>. Only one C<=begin> may be active at |
136 | a time. |
137 | |
138 | =item * =for without formatter specification |
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139 | |
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140 | There is no specification of the formatter after the C<=for> command. |
141 | |
142 | =item * unresolved internal link I<NAME> |
143 | |
144 | The given link to I<NAME> does not have a matching node in the current |
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145 | POD. This also happened when a single word node name is not enclosed in |
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146 | C<"">. |
147 | |
148 | =item * Unknown command "I<CMD>" |
149 | |
150 | An invalid POD command has been found. Valid are C<=head1>, C<=head2>, |
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151 | C<=head3>, C<=head4>, C<=over>, C<=item>, C<=back>, C<=begin>, C<=end>, |
152 | C<=for>, C<=pod>, C<=cut> |
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153 | |
154 | =item * Unknown interior-sequence "I<SEQ>" |
155 | |
156 | An invalid markup command has been encountered. Valid are: |
157 | C<BE<lt>E<gt>>, C<CE<lt>E<gt>>, C<EE<lt>E<gt>>, C<FE<lt>E<gt>>, |
158 | C<IE<lt>E<gt>>, C<LE<lt>E<gt>>, C<SE<lt>E<gt>>, C<XE<lt>E<gt>>, |
159 | C<ZE<lt>E<gt>> |
160 | |
161 | =item * nested commands I<CMD>E<lt>...I<CMD>E<lt>...E<gt>...E<gt> |
162 | |
163 | Two nested identical markup commands have been found. Generally this |
164 | does not make sense. |
165 | |
166 | =item * garbled entity I<STRING> |
167 | |
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168 | The I<STRING> found cannot be interpreted as a character entity. |
169 | |
170 | =item * Entity number out of range |
171 | |
172 | An entity specified by number (dec, hex, oct) is out of range (1-255). |
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173 | |
174 | =item * malformed link LE<lt>E<gt> |
175 | |
176 | The link found cannot be parsed because it does not conform to the |
177 | syntax described in L<perlpod>. |
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178 | |
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179 | =item * nonempty ZE<lt>E<gt> |
180 | |
181 | The C<ZE<lt>E<gt>> sequence is supposed to be empty. |
182 | |
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183 | =item * empty XE<lt>E<gt> |
184 | |
185 | The index entry specified contains nothing but whitespace. |
186 | |
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187 | =item * Spurious text after =pod / =cut |
188 | |
189 | The commands C<=pod> and C<=cut> do not take any arguments. |
190 | |
191 | =item * Spurious character(s) after =back |
192 | |
193 | The C<=back> command does not take any arguments. |
194 | |
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195 | =back |
196 | |
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197 | =head2 Warnings |
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198 | |
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199 | These may not necessarily cause trouble, but indicate mediocre style. |
200 | |
201 | =over 4 |
202 | |
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203 | =item * multiple occurrence of link target I<name> |
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204 | |
205 | The POD file has some C<=item> and/or C<=head> commands that have |
206 | the same text. Potential hyperlinks to such a text cannot be unique then. |
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207 | This warning is printed only with warning level greater than one. |
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208 | |
209 | =item * line containing nothing but whitespace in paragraph |
210 | |
211 | There is some whitespace on a seemingly empty line. POD is very sensitive |
212 | to such things, so this is flagged. B<vi> users switch on the B<list> |
213 | option to avoid this problem. |
214 | |
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215 | =begin _disabled_ |
216 | |
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217 | =item * file does not start with =head |
218 | |
219 | The file starts with a different POD directive than head. |
220 | This is most probably something you do not want. |
221 | |
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222 | =end _disabled_ |
223 | |
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224 | =item * previous =item has no contents |
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225 | |
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226 | There is a list C<=item> right above the flagged line that has no |
227 | text contents. You probably want to delete empty items. |
228 | |
229 | =item * preceding non-item paragraph(s) |
230 | |
231 | A list introduced by C<=over> starts with a text or verbatim paragraph, |
232 | but continues with C<=item>s. Move the non-item paragraph out of the |
233 | C<=over>/C<=back> block. |
234 | |
235 | =item * =item type mismatch (I<one> vs. I<two>) |
236 | |
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237 | A list started with e.g. a bullet-like C<=item> and continued with a |
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238 | numbered one. This is obviously inconsistent. For most translators the |
239 | type of the I<first> C<=item> determines the type of the list. |
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240 | |
241 | =item * I<N> unescaped C<E<lt>E<gt>> in paragraph |
242 | |
243 | Angle brackets not written as C<E<lt>ltE<gt>> and C<E<lt>gtE<gt>> |
244 | can potentially cause errors as they could be misinterpreted as |
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245 | markup commands. This is only printed when the -warnings level is |
246 | greater than 1. |
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247 | |
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248 | =item * Unknown entity |
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249 | |
250 | A character entity was found that does not belong to the standard |
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251 | ISO set or the POD specials C<verbar> and C<sol>. |
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252 | |
253 | =item * No items in =over |
254 | |
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255 | The list opened with C<=over> does not contain any items. |
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256 | |
257 | =item * No argument for =item |
258 | |
259 | C<=item> without any parameters is deprecated. It should either be followed |
260 | by C<*> to indicate an unordered list, by a number (optionally followed |
261 | by a dot) to indicate an ordered (numbered) list or simple text for a |
262 | definition list. |
263 | |
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264 | =item * empty section in previous paragraph |
265 | |
266 | The previous section (introduced by a C<=head> command) does not contain |
267 | any text. This usually indicates that something is missing. Note: A |
268 | C<=head1> followed immediately by C<=head2> does not trigger this warning. |
269 | |
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270 | =item * Verbatim paragraph in NAME section |
271 | |
272 | The NAME section (C<=head1 NAME>) should consist of a single paragraph |
273 | with the script/module name, followed by a dash `-' and a very short |
274 | description of what the thing is good for. |
275 | |
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276 | =item * =headI<n> without preceding higher level |
277 | |
278 | For example if there is a C<=head2> in the POD file prior to a |
279 | C<=head1>. |
280 | |
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281 | =back |
282 | |
283 | =head2 Hyperlinks |
284 | |
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285 | There are some warnings with respect to malformed hyperlinks: |
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286 | |
287 | =over 4 |
288 | |
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289 | =item * ignoring leading/trailing whitespace in link |
290 | |
291 | There is whitespace at the beginning or the end of the contents of |
292 | LE<lt>...E<gt>. |
293 | |
294 | =item * (section) in '$page' deprecated |
295 | |
296 | There is a section detected in the page name of LE<lt>...E<gt>, e.g. |
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297 | C<LE<lt>passwd(2)E<gt>>. POD hyperlinks may point to POD documents only. |
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298 | Please write C<CE<lt>passwd(2)E<gt>> instead. Some formatters are able |
299 | to expand this to appropriate code. For links to (builtin) functions, |
300 | please say C<LE<lt>perlfunc/mkdirE<gt>>, without (). |
301 | |
302 | =item * alternative text/node '%s' contains non-escaped | or / |
303 | |
304 | The characters C<|> and C</> are special in the LE<lt>...E<gt> context. |
305 | Although the hyperlink parser does its best to determine which "/" is |
306 | text and which is a delimiter in case of doubt, one ought to escape |
307 | these literal characters like this: |
308 | |
309 | / E<sol> |
310 | | E<verbar> |
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311 | |
312 | =back |
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313 | |
314 | =head1 RETURN VALUE |
315 | |
316 | B<podchecker> returns the number of POD syntax errors found or -1 if |
317 | there were no POD commands at all found in the file. |
318 | |
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319 | =head1 EXAMPLES |
320 | |
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321 | See L</SYNOPSIS> |
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322 | |
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323 | =head1 INTERFACE |
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324 | |
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325 | While checking, this module collects document properties, e.g. the nodes |
326 | for hyperlinks (C<=headX>, C<=item>) and index entries (C<XE<lt>E<gt>>). |
327 | POD translators can use this feature to syntax-check and get the nodes in |
328 | a first pass before actually starting to convert. This is expensive in terms |
329 | of execution time, but allows for very robust conversions. |
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330 | |
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331 | Since PodParser-1.24 the B<Pod::Checker> module uses only the B<poderror> |
332 | method to print errors and warnings. The summary output (e.g. |
333 | "Pod syntax OK") has been dropped from the module and has been included in |
334 | B<podchecker> (the script). This allows users of B<Pod::Checker> to |
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335 | control completely the output behavior. Users of B<podchecker> (the script) |
336 | get the well-known behavior. |
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337 | |
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338 | =cut |
339 | |
340 | ############################################################################# |
341 | |
342 | use strict; |
343 | #use diagnostics; |
344 | use Carp; |
345 | use Exporter; |
346 | use Pod::Parser; |
347 | |
348 | use vars qw(@ISA @EXPORT); |
349 | @ISA = qw(Pod::Parser); |
350 | @EXPORT = qw(&podchecker); |
351 | |
352 | use vars qw(%VALID_COMMANDS %VALID_SEQUENCES); |
353 | |
354 | my %VALID_COMMANDS = ( |
355 | 'pod' => 1, |
356 | 'cut' => 1, |
357 | 'head1' => 1, |
358 | 'head2' => 1, |
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359 | 'head3' => 1, |
360 | 'head4' => 1, |
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361 | 'over' => 1, |
362 | 'back' => 1, |
363 | 'item' => 1, |
364 | 'for' => 1, |
365 | 'begin' => 1, |
366 | 'end' => 1, |
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367 | 'encoding' => '1', |
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368 | ); |
369 | |
370 | my %VALID_SEQUENCES = ( |
371 | 'I' => 1, |
372 | 'B' => 1, |
373 | 'S' => 1, |
374 | 'C' => 1, |
375 | 'L' => 1, |
376 | 'F' => 1, |
377 | 'X' => 1, |
378 | 'Z' => 1, |
379 | 'E' => 1, |
380 | ); |
381 | |
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382 | # stolen from HTML::Entities |
383 | my %ENTITIES = ( |
384 | # Some normal chars that have special meaning in SGML context |
385 | amp => '&', # ampersand |
386 | 'gt' => '>', # greater than |
387 | 'lt' => '<', # less than |
388 | quot => '"', # double quote |
389 | |
390 | # PUBLIC ISO 8879-1986//ENTITIES Added Latin 1//EN//HTML |
391 | AElig => 'Æ', # capital AE diphthong (ligature) |
392 | Aacute => 'Á', # capital A, acute accent |
393 | Acirc => 'Â', # capital A, circumflex accent |
394 | Agrave => 'À', # capital A, grave accent |
395 | Aring => 'Å', # capital A, ring |
396 | Atilde => 'Ã', # capital A, tilde |
397 | Auml => 'Ä', # capital A, dieresis or umlaut mark |
398 | Ccedil => 'Ç', # capital C, cedilla |
399 | ETH => 'Ð', # capital Eth, Icelandic |
400 | Eacute => 'É', # capital E, acute accent |
401 | Ecirc => 'Ê', # capital E, circumflex accent |
402 | Egrave => 'È', # capital E, grave accent |
403 | Euml => 'Ë', # capital E, dieresis or umlaut mark |
404 | Iacute => 'Í', # capital I, acute accent |
405 | Icirc => 'Î', # capital I, circumflex accent |
406 | Igrave => 'Ì', # capital I, grave accent |
407 | Iuml => 'Ï', # capital I, dieresis or umlaut mark |
408 | Ntilde => 'Ñ', # capital N, tilde |
409 | Oacute => 'Ó', # capital O, acute accent |
410 | Ocirc => 'Ô', # capital O, circumflex accent |
411 | Ograve => 'Ò', # capital O, grave accent |
412 | Oslash => 'Ø', # capital O, slash |
413 | Otilde => 'Õ', # capital O, tilde |
414 | Ouml => 'Ö', # capital O, dieresis or umlaut mark |
415 | THORN => 'Þ', # capital THORN, Icelandic |
416 | Uacute => 'Ú', # capital U, acute accent |
417 | Ucirc => 'Û', # capital U, circumflex accent |
418 | Ugrave => 'Ù', # capital U, grave accent |
419 | Uuml => 'Ü', # capital U, dieresis or umlaut mark |
420 | Yacute => 'Ý', # capital Y, acute accent |
421 | aacute => 'á', # small a, acute accent |
422 | acirc => 'â', # small a, circumflex accent |
423 | aelig => 'æ', # small ae diphthong (ligature) |
424 | agrave => 'à', # small a, grave accent |
425 | aring => 'å', # small a, ring |
426 | atilde => 'ã', # small a, tilde |
427 | auml => 'ä', # small a, dieresis or umlaut mark |
428 | ccedil => 'ç', # small c, cedilla |
429 | eacute => 'é', # small e, acute accent |
430 | ecirc => 'ê', # small e, circumflex accent |
431 | egrave => 'è', # small e, grave accent |
432 | eth => 'ð', # small eth, Icelandic |
433 | euml => 'ë', # small e, dieresis or umlaut mark |
434 | iacute => 'í', # small i, acute accent |
435 | icirc => 'î', # small i, circumflex accent |
436 | igrave => 'ì', # small i, grave accent |
437 | iuml => 'ï', # small i, dieresis or umlaut mark |
438 | ntilde => 'ñ', # small n, tilde |
439 | oacute => 'ó', # small o, acute accent |
440 | ocirc => 'ô', # small o, circumflex accent |
441 | ograve => 'ò', # small o, grave accent |
442 | oslash => 'ø', # small o, slash |
443 | otilde => 'õ', # small o, tilde |
444 | ouml => 'ö', # small o, dieresis or umlaut mark |
445 | szlig => 'ß', # small sharp s, German (sz ligature) |
446 | thorn => 'þ', # small thorn, Icelandic |
447 | uacute => 'ú', # small u, acute accent |
448 | ucirc => 'û', # small u, circumflex accent |
449 | ugrave => 'ù', # small u, grave accent |
450 | uuml => 'ü', # small u, dieresis or umlaut mark |
451 | yacute => 'ý', # small y, acute accent |
452 | yuml => 'ÿ', # small y, dieresis or umlaut mark |
453 | |
454 | # Some extra Latin 1 chars that are listed in the HTML3.2 draft (21-May-96) |
455 | copy => '©', # copyright sign |
456 | reg => '®', # registered sign |
457 | nbsp => "\240", # non breaking space |
458 | |
459 | # Additional ISO-8859/1 entities listed in rfc1866 (section 14) |
460 | iexcl => '¡', |
461 | cent => '¢', |
462 | pound => '£', |
463 | curren => '¤', |
464 | yen => '¥', |
465 | brvbar => '¦', |
466 | sect => '§', |
467 | uml => '¨', |
468 | ordf => 'ª', |
469 | laquo => '«', |
470 | 'not' => '¬', # not is a keyword in perl |
471 | shy => '', |
472 | macr => '¯', |
473 | deg => '°', |
474 | plusmn => '±', |
475 | sup1 => '¹', |
476 | sup2 => '²', |
477 | sup3 => '³', |
478 | acute => '´', |
479 | micro => 'µ', |
480 | para => '¶', |
481 | middot => '·', |
482 | cedil => '¸', |
483 | ordm => 'º', |
484 | raquo => '»', |
485 | frac14 => '¼', |
486 | frac12 => '½', |
487 | frac34 => '¾', |
488 | iquest => '¿', |
489 | 'times' => '×', # times is a keyword in perl |
490 | divide => '÷', |
66aff6dd |
491 | |
492 | # some POD special entities |
493 | verbar => '|', |
494 | sol => '/' |
e2c3adef |
495 | ); |
496 | |
360aca43 |
497 | ##--------------------------------------------------------------------------- |
498 | |
499 | ##--------------------------------- |
500 | ## Function definitions begin here |
501 | ##--------------------------------- |
502 | |
e3237417 |
503 | sub podchecker( $ ; $ % ) { |
504 | my ($infile, $outfile, %options) = @_; |
360aca43 |
505 | local $_; |
506 | |
507 | ## Set defaults |
508 | $infile ||= \*STDIN; |
509 | $outfile ||= \*STDERR; |
510 | |
511 | ## Now create a pod checker |
e3237417 |
512 | my $checker = new Pod::Checker(%options); |
360aca43 |
513 | |
514 | ## Now check the pod document for errors |
515 | $checker->parse_from_file($infile, $outfile); |
48f30392 |
516 | |
360aca43 |
517 | ## Return the number of errors found |
518 | return $checker->num_errors(); |
519 | } |
520 | |
521 | ##--------------------------------------------------------------------------- |
522 | |
523 | ##------------------------------- |
524 | ## Method definitions begin here |
525 | ##------------------------------- |
526 | |
92e3d63a |
527 | ################################## |
528 | |
529 | =over 4 |
530 | |
531 | =item C<Pod::Checker-E<gt>new( %options )> |
532 | |
533 | Return a reference to a new Pod::Checker object that inherits from |
534 | Pod::Parser and is used for calling the required methods later. The |
535 | following options are recognized: |
536 | |
537 | C<-warnings =E<gt> num> |
538 | Print warnings if C<num> is true. The higher the value of C<num>, |
539 | the more warnings are printed. Currently there are only levels 1 and 2. |
540 | |
541 | C<-quiet =E<gt> num> |
542 | If C<num> is true, do not print any errors/warnings. This is useful |
543 | when Pod::Checker is used to munge POD code into plain text from within |
544 | POD formatters. |
545 | |
546 | =cut |
547 | |
66aff6dd |
548 | ## sub new { |
549 | ## my $this = shift; |
550 | ## my $class = ref($this) || $this; |
551 | ## my %params = @_; |
552 | ## my $self = {%params}; |
553 | ## bless $self, $class; |
554 | ## $self->initialize(); |
555 | ## return $self; |
556 | ## } |
360aca43 |
557 | |
558 | sub initialize { |
559 | my $self = shift; |
664bb207 |
560 | ## Initialize number of errors, and setup an error function to |
561 | ## increment this number and then print to the designated output. |
562 | $self->{_NUM_ERRORS} = 0; |
9c6ed6d7 |
563 | $self->{_NUM_WARNINGS} = 0; |
92e3d63a |
564 | $self->{-quiet} ||= 0; |
565 | # set the error handling subroutine |
566 | $self->errorsub($self->{-quiet} ? sub { 1; } : 'poderror'); |
e3237417 |
567 | $self->{_commands} = 0; # total number of POD commands encountered |
568 | $self->{_list_stack} = []; # stack for nested lists |
569 | $self->{_have_begin} = ''; # stores =begin |
570 | $self->{_links} = []; # stack for internal hyperlinks |
571 | $self->{_nodes} = []; # stack for =head/=item nodes |
48f30392 |
572 | $self->{_index} = []; # text in X<> |
e2c3adef |
573 | # print warnings? |
e3237417 |
574 | $self->{-warnings} = 1 unless(defined $self->{-warnings}); |
e2c3adef |
575 | $self->{_current_head1} = ''; # the current =head1 block |
92e3d63a |
576 | $self->parseopts(-process_cut_cmd => 1, -warnings => $self->{-warnings}); |
664bb207 |
577 | } |
578 | |
48f30392 |
579 | ################################## |
580 | |
48f30392 |
581 | =item C<$checker-E<gt>poderror( @args )> |
582 | |
583 | =item C<$checker-E<gt>poderror( {%opts}, @args )> |
584 | |
585 | Internal method for printing errors and warnings. If no options are |
586 | given, simply prints "@_". The following options are recognized and used |
587 | to form the output: |
588 | |
589 | -msg |
590 | |
591 | A message to print prior to C<@args>. |
592 | |
593 | -line |
594 | |
595 | The line number the error occurred in. |
596 | |
597 | -file |
598 | |
599 | The file (name) the error occurred in. |
600 | |
601 | -severity |
602 | |
603 | The error level, should be 'WARNING' or 'ERROR'. |
604 | |
605 | =cut |
606 | |
e2c3adef |
607 | # Invoked as $self->poderror( @args ), or $self->poderror( {%opts}, @args ) |
664bb207 |
608 | sub poderror { |
609 | my $self = shift; |
610 | my %opts = (ref $_[0]) ? %{shift()} : (); |
611 | |
612 | ## Retrieve options |
613 | chomp( my $msg = ($opts{-msg} || "")."@_" ); |
614 | my $line = (exists $opts{-line}) ? " at line $opts{-line}" : ""; |
615 | my $file = (exists $opts{-file}) ? " in file $opts{-file}" : ""; |
66aff6dd |
616 | unless (exists $opts{-severity}) { |
617 | ## See if can find severity in message prefix |
618 | $opts{-severity} = $1 if ( $msg =~ s/^\**\s*([A-Z]{3,}):\s+// ); |
619 | } |
664bb207 |
620 | my $severity = (exists $opts{-severity}) ? "*** $opts{-severity}: " : ""; |
621 | |
e3237417 |
622 | ## Increment error count and print message " |
623 | ++($self->{_NUM_ERRORS}) |
624 | if(!%opts || ($opts{-severity} && $opts{-severity} eq 'ERROR')); |
9c6ed6d7 |
625 | ++($self->{_NUM_WARNINGS}) |
626 | if(!%opts || ($opts{-severity} && $opts{-severity} eq 'WARNING')); |
7b47f8ec |
627 | unless($self->{-quiet}) { |
628 | my $out_fh = $self->output_handle() || \*STDERR; |
629 | print $out_fh ($severity, $msg, $line, $file, "\n") |
630 | if($self->{-warnings} || !%opts || $opts{-severity} ne 'WARNING'); |
631 | } |
360aca43 |
632 | } |
633 | |
48f30392 |
634 | ################################## |
635 | |
636 | =item C<$checker-E<gt>num_errors()> |
637 | |
638 | Set (if argument specified) and retrieve the number of errors found. |
639 | |
640 | =cut |
641 | |
360aca43 |
642 | sub num_errors { |
643 | return (@_ > 1) ? ($_[0]->{_NUM_ERRORS} = $_[1]) : $_[0]->{_NUM_ERRORS}; |
644 | } |
645 | |
48f30392 |
646 | ################################## |
647 | |
9c6ed6d7 |
648 | =item C<$checker-E<gt>num_warnings()> |
649 | |
650 | Set (if argument specified) and retrieve the number of warnings found. |
651 | |
652 | =cut |
653 | |
654 | sub num_warnings { |
655 | return (@_ > 1) ? ($_[0]->{_NUM_WARNINGS} = $_[1]) : $_[0]->{_NUM_WARNINGS}; |
656 | } |
657 | |
658 | ################################## |
659 | |
48f30392 |
660 | =item C<$checker-E<gt>name()> |
661 | |
662 | Set (if argument specified) and retrieve the canonical name of POD as |
663 | found in the C<=head1 NAME> section. |
664 | |
665 | =cut |
666 | |
e2c3adef |
667 | sub name { |
668 | return (@_ > 1 && $_[1]) ? |
669 | ($_[0]->{-name} = $_[1]) : $_[0]->{-name}; |
670 | } |
671 | |
48f30392 |
672 | ################################## |
673 | |
674 | =item C<$checker-E<gt>node()> |
675 | |
676 | Add (if argument specified) and retrieve the nodes (as defined by C<=headX> |
677 | and C<=item>) of the current POD. The nodes are returned in the order of |
fb8eeed8 |
678 | their occurrence. They consist of plain text, each piece of whitespace is |
48f30392 |
679 | collapsed to a single blank. |
680 | |
681 | =cut |
682 | |
e2c3adef |
683 | sub node { |
684 | my ($self,$text) = @_; |
685 | if(defined $text) { |
66aff6dd |
686 | $text =~ s/\s+$//s; # strip trailing whitespace |
687 | $text =~ s/\s+/ /gs; # collapse whitespace |
688 | # add node, order important! |
e2c3adef |
689 | push(@{$self->{_nodes}}, $text); |
66aff6dd |
690 | # keep also a uniqueness counter |
48f30392 |
691 | $self->{_unique_nodes}->{$text}++ if($text !~ /^\s*$/s); |
e2c3adef |
692 | return $text; |
693 | } |
694 | @{$self->{_nodes}}; |
695 | } |
696 | |
48f30392 |
697 | ################################## |
698 | |
699 | =item C<$checker-E<gt>idx()> |
700 | |
701 | Add (if argument specified) and retrieve the index entries (as defined by |
702 | C<XE<lt>E<gt>>) of the current POD. They consist of plain text, each piece |
703 | of whitespace is collapsed to a single blank. |
704 | |
705 | =cut |
706 | |
707 | # set/return index entries of current POD |
708 | sub idx { |
709 | my ($self,$text) = @_; |
710 | if(defined $text) { |
711 | $text =~ s/\s+$//s; # strip trailing whitespace |
712 | $text =~ s/\s+/ /gs; # collapse whitespace |
713 | # add node, order important! |
714 | push(@{$self->{_index}}, $text); |
715 | # keep also a uniqueness counter |
716 | $self->{_unique_nodes}->{$text}++ if($text !~ /^\s*$/s); |
717 | return $text; |
718 | } |
719 | @{$self->{_index}}; |
720 | } |
721 | |
722 | ################################## |
723 | |
724 | =item C<$checker-E<gt>hyperlink()> |
725 | |
726 | Add (if argument specified) and retrieve the hyperlinks (as defined by |
d1be9408 |
727 | C<LE<lt>E<gt>>) of the current POD. They consist of a 2-item array: line |
48f30392 |
728 | number and C<Pod::Hyperlink> object. |
729 | |
730 | =back |
731 | |
732 | =cut |
733 | |
e2c3adef |
734 | # set/return hyperlinks of the current POD |
735 | sub hyperlink { |
736 | my $self = shift; |
737 | if($_[0]) { |
738 | push(@{$self->{_links}}, $_[0]); |
739 | return $_[0]; |
740 | } |
741 | @{$self->{_links}}; |
742 | } |
743 | |
e3237417 |
744 | ## overrides for Pod::Parser |
745 | |
360aca43 |
746 | sub end_pod { |
66aff6dd |
747 | ## Do some final checks and |
748 | ## print the number of errors found |
749 | my $self = shift; |
750 | my $infile = $self->input_file(); |
66aff6dd |
751 | |
752 | if(@{$self->{_list_stack}}) { |
66aff6dd |
753 | my $list; |
754 | while(($list = $self->_close_list('EOF',$infile)) && |
755 | $list->indent() ne 'auto') { |
756 | $self->poderror({ -line => 'EOF', -file => $infile, |
757 | -severity => 'ERROR', -msg => "=over on line " . |
758 | $list->start() . " without closing =back" }); #" |
759 | } |
760 | } |
761 | |
762 | # check validity of document internal hyperlinks |
763 | # first build the node names from the paragraph text |
764 | my %nodes; |
765 | foreach($self->node()) { |
766 | $nodes{$_} = 1; |
92e3d63a |
767 | if(/^(\S+)\s+\S/) { |
66aff6dd |
768 | # we have more than one word. Use the first as a node, too. |
769 | # This is used heavily in perlfunc.pod |
770 | $nodes{$1} ||= 2; # derived node |
771 | } |
772 | } |
92e3d63a |
773 | foreach($self->idx()) { |
774 | $nodes{$_} = 3; # index node |
775 | } |
66aff6dd |
776 | foreach($self->hyperlink()) { |
48f30392 |
777 | my ($line,$link) = @$_; |
778 | # _TODO_ what if there is a link to the page itself by the name, |
779 | # e.g. in Tk::Pod : L<Tk::Pod/"DESCRIPTION"> |
780 | if($link->node() && !$link->page() && $link->type() ne 'hyperlink') { |
781 | my $node = $self->_check_ptree($self->parse_text($link->node(), |
782 | $line), $line, $infile, 'L'); |
783 | if($node && !$nodes{$node}) { |
784 | $self->poderror({ -line => $line || '', -file => $infile, |
785 | -severity => 'ERROR', |
786 | -msg => "unresolved internal link '$node'"}); |
787 | } |
66aff6dd |
788 | } |
789 | } |
48f30392 |
790 | |
791 | # check the internal nodes for uniqueness. This pertains to |
792 | # =headX, =item and X<...> |
d5c61f7c |
793 | if($self->{-warnings} && $self->{-warnings}>1) { |
794 | foreach(grep($self->{_unique_nodes}->{$_} > 1, |
795 | keys %{$self->{_unique_nodes}})) { |
796 | $self->poderror({ -line => '-', -file => $infile, |
66aff6dd |
797 | -severity => 'WARNING', |
fb8eeed8 |
798 | -msg => "multiple occurrence of link target '$_'"}); |
d5c61f7c |
799 | } |
66aff6dd |
800 | } |
801 | |
c23d1eb0 |
802 | # no POD found here |
803 | $self->num_errors(-1) if($self->{_commands} == 0); |
360aca43 |
804 | } |
805 | |
e2c3adef |
806 | # check a POD command directive |
360aca43 |
807 | sub command { |
664bb207 |
808 | my ($self, $cmd, $paragraph, $line_num, $pod_para) = @_; |
360aca43 |
809 | my ($file, $line) = $pod_para->file_line; |
360aca43 |
810 | ## Check the command syntax |
e3237417 |
811 | my $arg; # this will hold the command argument |
664bb207 |
812 | if (! $VALID_COMMANDS{$cmd}) { |
813 | $self->poderror({ -line => $line, -file => $file, -severity => 'ERROR', |
66aff6dd |
814 | -msg => "Unknown command '$cmd'" }); |
360aca43 |
815 | } |
92e3d63a |
816 | else { # found a valid command |
817 | $self->{_commands}++; # delete this line if below is enabled again |
818 | |
819 | ##### following check disabled due to strong request |
820 | #if(!$self->{_commands}++ && $cmd !~ /^head/) { |
821 | # $self->poderror({ -line => $line, -file => $file, |
822 | # -severity => 'WARNING', |
823 | # -msg => "file does not start with =head" }); |
824 | #} |
825 | |
826 | # check syntax of particular command |
e3237417 |
827 | if($cmd eq 'over') { |
e2c3adef |
828 | # check for argument |
829 | $arg = $self->interpolate_and_check($paragraph, $line,$file); |
830 | my $indent = 4; # default |
831 | if($arg && $arg =~ /^\s*(\d+)\s*$/) { |
832 | $indent = $1; |
e2c3adef |
833 | } |
e3237417 |
834 | # start a new list |
66aff6dd |
835 | $self->_open_list($indent,$line,$file); |
e3237417 |
836 | } |
837 | elsif($cmd eq 'item') { |
e2c3adef |
838 | # are we in a list? |
e3237417 |
839 | unless(@{$self->{_list_stack}}) { |
840 | $self->poderror({ -line => $line, -file => $file, |
841 | -severity => 'ERROR', |
842 | -msg => "=item without previous =over" }); |
e2c3adef |
843 | # auto-open in case we encounter many more |
66aff6dd |
844 | $self->_open_list('auto',$line,$file); |
845 | } |
846 | my $list = $self->{_list_stack}->[0]; |
847 | # check whether the previous item had some contents |
848 | if(defined $self->{_list_item_contents} && |
849 | $self->{_list_item_contents} == 0) { |
850 | $self->poderror({ -line => $line, -file => $file, |
851 | -severity => 'WARNING', |
852 | -msg => "previous =item has no contents" }); |
853 | } |
854 | if($list->{_has_par}) { |
855 | $self->poderror({ -line => $line, -file => $file, |
856 | -severity => 'WARNING', |
857 | -msg => "preceding non-item paragraph(s)" }); |
858 | delete $list->{_has_par}; |
e3237417 |
859 | } |
e2c3adef |
860 | # check for argument |
861 | $arg = $self->interpolate_and_check($paragraph, $line, $file); |
66aff6dd |
862 | if($arg && $arg =~ /(\S+)/) { |
863 | $arg =~ s/[\s\n]+$//; |
864 | my $type; |
865 | if($arg =~ /^[*]\s*(\S*.*)/) { |
866 | $type = 'bullet'; |
867 | $self->{_list_item_contents} = $1 ? 1 : 0; |
868 | $arg = $1; |
869 | } |
870 | elsif($arg =~ /^\d+\.?\s*(\S*)/) { |
871 | $type = 'number'; |
872 | $self->{_list_item_contents} = $1 ? 1 : 0; |
873 | $arg = $1; |
874 | } |
875 | else { |
876 | $type = 'definition'; |
877 | $self->{_list_item_contents} = 1; |
878 | } |
879 | my $first = $list->type(); |
880 | if($first && $first ne $type) { |
881 | $self->poderror({ -line => $line, -file => $file, |
882 | -severity => 'WARNING', |
883 | -msg => "=item type mismatch ('$first' vs. '$type')"}); |
884 | } |
885 | else { # first item |
886 | $list->type($type); |
887 | } |
888 | } |
889 | else { |
e2c3adef |
890 | $self->poderror({ -line => $line, -file => $file, |
891 | -severity => 'WARNING', |
892 | -msg => "No argument for =item" }); |
893 | $arg = ' '; # empty |
66aff6dd |
894 | $self->{_list_item_contents} = 0; |
e3237417 |
895 | } |
e2c3adef |
896 | # add this item |
66aff6dd |
897 | $list->item($arg); |
e2c3adef |
898 | # remember this node |
899 | $self->node($arg); |
e3237417 |
900 | } |
901 | elsif($cmd eq 'back') { |
902 | # check if we have an open list |
903 | unless(@{$self->{_list_stack}}) { |
904 | $self->poderror({ -line => $line, -file => $file, |
905 | -severity => 'ERROR', |
906 | -msg => "=back without previous =over" }); |
907 | } |
908 | else { |
909 | # check for spurious characters |
e2c3adef |
910 | $arg = $self->interpolate_and_check($paragraph, $line,$file); |
e3237417 |
911 | if($arg && $arg =~ /\S/) { |
912 | $self->poderror({ -line => $line, -file => $file, |
66aff6dd |
913 | -severity => 'ERROR', |
e3237417 |
914 | -msg => "Spurious character(s) after =back" }); |
915 | } |
916 | # close list |
66aff6dd |
917 | my $list = $self->_close_list($line,$file); |
e3237417 |
918 | # check for empty lists |
919 | if(!$list->item() && $self->{-warnings}) { |
920 | $self->poderror({ -line => $line, -file => $file, |
921 | -severity => 'WARNING', |
922 | -msg => "No items in =over (at line " . |
923 | $list->start() . ") / =back list"}); #" |
924 | } |
925 | } |
926 | } |
66aff6dd |
927 | elsif($cmd =~ /^head(\d+)/) { |
9c6ed6d7 |
928 | my $hnum = $1; |
929 | $self->{"_have_head_$hnum"}++; # count head types |
930 | if($hnum > 1 && !$self->{"_have_head_".($hnum -1)}) { |
931 | $self->poderror({ -line => $line, -file => $file, |
932 | -severity => 'WARNING', |
933 | -msg => "=head$hnum without preceding higher level"}); |
934 | } |
48f30392 |
935 | # check whether the previous =head section had some contents |
66aff6dd |
936 | if(defined $self->{_commands_in_head} && |
937 | $self->{_commands_in_head} == 0 && |
938 | defined $self->{_last_head} && |
9c6ed6d7 |
939 | $self->{_last_head} >= $hnum) { |
66aff6dd |
940 | $self->poderror({ -line => $line, -file => $file, |
941 | -severity => 'WARNING', |
942 | -msg => "empty section in previous paragraph"}); |
943 | } |
944 | $self->{_commands_in_head} = -1; |
9c6ed6d7 |
945 | $self->{_last_head} = $hnum; |
e3237417 |
946 | # check if there is an open list |
947 | if(@{$self->{_list_stack}}) { |
948 | my $list; |
66aff6dd |
949 | while(($list = $self->_close_list($line,$file)) && |
950 | $list->indent() ne 'auto') { |
e3237417 |
951 | $self->poderror({ -line => $line, -file => $file, |
952 | -severity => 'ERROR', |
e2c3adef |
953 | -msg => "=over on line ". $list->start() . |
954 | " without closing =back (at $cmd)" }); |
e3237417 |
955 | } |
956 | } |
957 | # remember this node |
e2c3adef |
958 | $arg = $self->interpolate_and_check($paragraph, $line,$file); |
66aff6dd |
959 | $arg =~ s/[\s\n]+$//s; |
960 | $self->node($arg); |
961 | unless(length($arg)) { |
962 | $self->poderror({ -line => $line, -file => $file, |
963 | -severity => 'ERROR', |
964 | -msg => "empty =$cmd"}); |
965 | } |
e2c3adef |
966 | if($cmd eq 'head1') { |
e2c3adef |
967 | $self->{_current_head1} = $arg; |
968 | } else { |
969 | $self->{_current_head1} = ''; |
970 | } |
e3237417 |
971 | } |
972 | elsif($cmd eq 'begin') { |
973 | if($self->{_have_begin}) { |
974 | # already have a begin |
975 | $self->poderror({ -line => $line, -file => $file, |
976 | -severity => 'ERROR', |
977 | -msg => "Nested =begin's (first at line " . |
978 | $self->{_have_begin} . ")"}); |
979 | } |
980 | else { |
981 | # check for argument |
e2c3adef |
982 | $arg = $self->interpolate_and_check($paragraph, $line,$file); |
e3237417 |
983 | unless($arg && $arg =~ /(\S+)/) { |
984 | $self->poderror({ -line => $line, -file => $file, |
e2c3adef |
985 | -severity => 'ERROR', |
e3237417 |
986 | -msg => "No argument for =begin"}); |
987 | } |
988 | # remember the =begin |
989 | $self->{_have_begin} = "$line:$1"; |
990 | } |
991 | } |
992 | elsif($cmd eq 'end') { |
993 | if($self->{_have_begin}) { |
994 | # close the existing =begin |
995 | $self->{_have_begin} = ''; |
996 | # check for spurious characters |
e2c3adef |
997 | $arg = $self->interpolate_and_check($paragraph, $line,$file); |
998 | # the closing argument is optional |
999 | #if($arg && $arg =~ /\S/) { |
1000 | # $self->poderror({ -line => $line, -file => $file, |
1001 | # -severity => 'WARNING', |
1002 | # -msg => "Spurious character(s) after =end" }); |
1003 | #} |
e3237417 |
1004 | } |
1005 | else { |
1006 | # don't have a matching =begin |
1007 | $self->poderror({ -line => $line, -file => $file, |
e2c3adef |
1008 | -severity => 'ERROR', |
e3237417 |
1009 | -msg => "=end without =begin" }); |
1010 | } |
1011 | } |
e2c3adef |
1012 | elsif($cmd eq 'for') { |
1013 | unless($paragraph =~ /\s*(\S+)\s*/) { |
1014 | $self->poderror({ -line => $line, -file => $file, |
1015 | -severity => 'ERROR', |
1016 | -msg => "=for without formatter specification" }); |
1017 | } |
1018 | $arg = ''; # do not expand paragraph below |
1019 | } |
66aff6dd |
1020 | elsif($cmd =~ /^(pod|cut)$/) { |
1021 | # check for argument |
1022 | $arg = $self->interpolate_and_check($paragraph, $line,$file); |
1023 | if($arg && $arg =~ /(\S+)/) { |
1024 | $self->poderror({ -line => $line, -file => $file, |
1025 | -severity => 'ERROR', |
1026 | -msg => "Spurious text after =$cmd"}); |
1027 | } |
1028 | } |
1029 | $self->{_commands_in_head}++; |
e3237417 |
1030 | ## Check the interior sequences in the command-text |
e2c3adef |
1031 | $self->interpolate_and_check($paragraph, $line,$file) |
e3237417 |
1032 | unless(defined $arg); |
e2c3adef |
1033 | } |
360aca43 |
1034 | } |
1035 | |
66aff6dd |
1036 | sub _open_list |
1037 | { |
1038 | my ($self,$indent,$line,$file) = @_; |
1039 | my $list = Pod::List->new( |
1040 | -indent => $indent, |
1041 | -start => $line, |
1042 | -file => $file); |
1043 | unshift(@{$self->{_list_stack}}, $list); |
1044 | undef $self->{_list_item_contents}; |
1045 | $list; |
1046 | } |
1047 | |
1048 | sub _close_list |
1049 | { |
1050 | my ($self,$line,$file) = @_; |
1051 | my $list = shift(@{$self->{_list_stack}}); |
1052 | if(defined $self->{_list_item_contents} && |
1053 | $self->{_list_item_contents} == 0) { |
1054 | $self->poderror({ -line => $line, -file => $file, |
1055 | -severity => 'WARNING', |
1056 | -msg => "previous =item has no contents" }); |
1057 | } |
1058 | undef $self->{_list_item_contents}; |
1059 | $list; |
1060 | } |
1061 | |
e2c3adef |
1062 | # process a block of some text |
1063 | sub interpolate_and_check { |
e3237417 |
1064 | my ($self, $paragraph, $line, $file) = @_; |
1065 | ## Check the interior sequences in the command-text |
1066 | # and return the text |
1067 | $self->_check_ptree( |
1068 | $self->parse_text($paragraph,$line), $line, $file, ''); |
1069 | } |
1070 | |
1071 | sub _check_ptree { |
1072 | my ($self,$ptree,$line,$file,$nestlist) = @_; |
1073 | local($_); |
1074 | my $text = ''; |
1075 | # process each node in the parse tree |
1076 | foreach(@$ptree) { |
1077 | # regular text chunk |
1078 | unless(ref) { |
e3237417 |
1079 | # count the unescaped angle brackets |
92e3d63a |
1080 | # complain only when warning level is greater than 1 |
c23d1eb0 |
1081 | if($self->{-warnings} && $self->{-warnings}>1) { |
1082 | my $count; |
1083 | if($count = tr/<>/<>/) { |
e3237417 |
1084 | $self->poderror({ -line => $line, -file => $file, |
1085 | -severity => 'WARNING', |
c23d1eb0 |
1086 | -msg => "$count unescaped <> in paragraph" }); |
1087 | } |
e3237417 |
1088 | } |
c23d1eb0 |
1089 | $text .= $_; |
e3237417 |
1090 | next; |
1091 | } |
1092 | # have an interior sequence |
1093 | my $cmd = $_->cmd_name(); |
1094 | my $contents = $_->parse_tree(); |
1095 | ($file,$line) = $_->file_line(); |
1096 | # check for valid tag |
1097 | if (! $VALID_SEQUENCES{$cmd}) { |
1098 | $self->poderror({ -line => $line, -file => $file, |
1099 | -severity => 'ERROR', |
66aff6dd |
1100 | -msg => qq(Unknown interior-sequence '$cmd')}); |
e3237417 |
1101 | # expand it anyway |
1102 | $text .= $self->_check_ptree($contents, $line, $file, "$nestlist$cmd"); |
1103 | next; |
1104 | } |
1105 | if($nestlist =~ /$cmd/) { |
1106 | $self->poderror({ -line => $line, -file => $file, |
7b47f8ec |
1107 | -severity => 'WARNING', |
e3237417 |
1108 | -msg => "nested commands $cmd<...$cmd<...>...>"}); |
1109 | # _TODO_ should we add the contents anyway? |
1110 | # expand it anyway, see below |
1111 | } |
1112 | if($cmd eq 'E') { |
1113 | # preserve entities |
1114 | if(@$contents > 1 || ref $$contents[0] || $$contents[0] !~ /^\w+$/) { |
1115 | $self->poderror({ -line => $line, -file => $file, |
1116 | -severity => 'ERROR', |
1117 | -msg => "garbled entity " . $_->raw_text()}); |
1118 | next; |
1119 | } |
e2c3adef |
1120 | my $ent = $$contents[0]; |
66aff6dd |
1121 | my $val; |
1122 | if($ent =~ /^0x[0-9a-f]+$/i) { |
1123 | # hexadec entity |
1124 | $val = hex($ent); |
1125 | } |
1126 | elsif($ent =~ /^0\d+$/) { |
1127 | # octal |
1128 | $val = oct($ent); |
1129 | } |
1130 | elsif($ent =~ /^\d+$/) { |
e2c3adef |
1131 | # numeric entity |
66aff6dd |
1132 | $val = $ent; |
1133 | } |
1134 | if(defined $val) { |
1135 | if($val>0 && $val<256) { |
1136 | $text .= chr($val); |
1137 | } |
1138 | else { |
1139 | $self->poderror({ -line => $line, -file => $file, |
1140 | -severity => 'ERROR', |
1141 | -msg => "Entity number out of range " . $_->raw_text()}); |
1142 | } |
e2c3adef |
1143 | } |
1144 | elsif($ENTITIES{$ent}) { |
1145 | # known ISO entity |
1146 | $text .= $ENTITIES{$ent}; |
1147 | } |
1148 | else { |
1149 | $self->poderror({ -line => $line, -file => $file, |
1150 | -severity => 'WARNING', |
66aff6dd |
1151 | -msg => "Unknown entity " . $_->raw_text()}); |
e2c3adef |
1152 | $text .= "E<$ent>"; |
1153 | } |
e3237417 |
1154 | } |
1155 | elsif($cmd eq 'L') { |
1156 | # try to parse the hyperlink |
1157 | my $link = Pod::Hyperlink->new($contents->raw_text()); |
1158 | unless(defined $link) { |
1159 | $self->poderror({ -line => $line, -file => $file, |
1160 | -severity => 'ERROR', |
e2c3adef |
1161 | -msg => "malformed link " . $_->raw_text() ." : $@"}); |
e3237417 |
1162 | next; |
1163 | } |
1164 | $link->line($line); # remember line |
1165 | if($self->{-warnings}) { |
1166 | foreach my $w ($link->warning()) { |
1167 | $self->poderror({ -line => $line, -file => $file, |
1168 | -severity => 'WARNING', |
1169 | -msg => $w }); |
1170 | } |
1171 | } |
1172 | # check the link text |
1173 | $text .= $self->_check_ptree($self->parse_text($link->text(), |
1174 | $line), $line, $file, "$nestlist$cmd"); |
48f30392 |
1175 | # remember link |
1176 | $self->hyperlink([$line,$link]); |
e3237417 |
1177 | } |
1178 | elsif($cmd =~ /[BCFIS]/) { |
1179 | # add the guts |
1180 | $text .= $self->_check_ptree($contents, $line, $file, "$nestlist$cmd"); |
1181 | } |
66aff6dd |
1182 | elsif($cmd eq 'Z') { |
1183 | if(length($contents->raw_text())) { |
1184 | $self->poderror({ -line => $line, -file => $file, |
1185 | -severity => 'ERROR', |
1186 | -msg => "Nonempty Z<>"}); |
1187 | } |
1188 | } |
48f30392 |
1189 | elsif($cmd eq 'X') { |
1190 | my $idx = $self->_check_ptree($contents, $line, $file, "$nestlist$cmd"); |
1191 | if($idx =~ /^\s*$/s) { |
1192 | $self->poderror({ -line => $line, -file => $file, |
1193 | -severity => 'ERROR', |
1194 | -msg => "Empty X<>"}); |
1195 | } |
1196 | else { |
1197 | # remember this node |
1198 | $self->idx($idx); |
1199 | } |
1200 | } |
1201 | else { |
1202 | # not reached |
1203 | die "internal error"; |
e3237417 |
1204 | } |
1205 | } |
1206 | $text; |
1207 | } |
1208 | |
e2c3adef |
1209 | # process a block of verbatim text |
360aca43 |
1210 | sub verbatim { |
66aff6dd |
1211 | ## Nothing particular to check |
e2c3adef |
1212 | my ($self, $paragraph, $line_num, $pod_para) = @_; |
66aff6dd |
1213 | |
1214 | $self->_preproc_par($paragraph); |
1215 | |
e2c3adef |
1216 | if($self->{_current_head1} eq 'NAME') { |
1217 | my ($file, $line) = $pod_para->file_line; |
1218 | $self->poderror({ -line => $line, -file => $file, |
1219 | -severity => 'WARNING', |
1220 | -msg => 'Verbatim paragraph in NAME section' }); |
1221 | } |
360aca43 |
1222 | } |
1223 | |
e2c3adef |
1224 | # process a block of regular text |
360aca43 |
1225 | sub textblock { |
1226 | my ($self, $paragraph, $line_num, $pod_para) = @_; |
e3237417 |
1227 | my ($file, $line) = $pod_para->file_line; |
e3237417 |
1228 | |
66aff6dd |
1229 | $self->_preproc_par($paragraph); |
1230 | |
e2c3adef |
1231 | # skip this paragraph if in a =begin block |
1232 | unless($self->{_have_begin}) { |
1233 | my $block = $self->interpolate_and_check($paragraph, $line,$file); |
1234 | if($self->{_current_head1} eq 'NAME') { |
1235 | if($block =~ /^\s*(\S+?)\s*[,-]/) { |
1236 | # this is the canonical name |
1237 | $self->{-name} = $1 unless(defined $self->{-name}); |
1238 | } |
e3237417 |
1239 | } |
1240 | } |
e3237417 |
1241 | } |
1242 | |
66aff6dd |
1243 | sub _preproc_par |
1244 | { |
1245 | my $self = shift; |
1246 | $_[0] =~ s/[\s\n]+$//; |
1247 | if($_[0]) { |
1248 | $self->{_commands_in_head}++; |
1249 | $self->{_list_item_contents}++ if(defined $self->{_list_item_contents}); |
1250 | if(@{$self->{_list_stack}} && !$self->{_list_stack}->[0]->item()) { |
1251 | $self->{_list_stack}->[0]->{_has_par} = 1; |
1252 | } |
1253 | } |
1254 | } |
1255 | |
e3237417 |
1256 | 1; |
66aff6dd |
1257 | |
48f30392 |
1258 | __END__ |
1259 | |
1260 | =head1 AUTHOR |
1261 | |
aaa799f9 |
1262 | Please report bugs using L<http://rt.cpan.org>. |
1263 | |
48f30392 |
1264 | Brad Appleton E<lt>bradapp@enteract.comE<gt> (initial version), |
aaa799f9 |
1265 | Marek Rouchal E<lt>marekr@cpan.orgE<gt> |
48f30392 |
1266 | |
1267 | Based on code for B<Pod::Text::pod2text()> written by |
1268 | Tom Christiansen E<lt>tchrist@mox.perl.comE<gt> |
1269 | |
1270 | =cut |
1271 | |