1 #! /usr/bin/perl 2 3 # A script to scan PCRE2's man pages to check for typos in the control 4 # sequences. I use only a small set of the available repertoire, so it is 5 # straightforward to check that nothing else has slipped in by mistake. This 6 # script should be called in the doc directory. 7 8 $yield = 0; 9 10 while (scalar(@ARGV) > 0) 11 { 12 $line = 0; 13 $file = shift @ARGV; 14 15 open (IN, $file) || die "Failed to open $file\n"; 16 17 while (<IN>) 18 { 19 $line++; 20 if (/^\s*$/) 21 { 22 printf "Empty line $line of $file\n"; 23 $yield = 1; 24 } 25 elsif (/^\./) 26 { 27 if (!/^\.\s*$| 28 ^\.B\s+\S| 29 ^\.TH\s\S| 30 ^\.SH\s\S| 31 ^\.SS\s\S| 32 ^\.TP(?:\s?\d+)?\s*$| 33 ^\.SM\s*$| 34 ^\.br\s*$| 35 ^\.rs\s*$| 36 ^\.sp\s*$| 37 ^\.nf\s*$| 38 ^\.fi\s*$| 39 ^\.P\s*$| 40 ^\.PP\s*$| 41 ^\.\\"(?:\ HREF)?\s*$| 42 ^\.\\"\sHTML\s<a\shref="[^"]+?">\s*$| 43 ^\.\\"\sHTML\s<a\sname="[^"]+?"><\/a>\s*$| 44 ^\.\\"\s<\/a>\s*$| 45 ^\.\\"\sJOINSH\s*$| 46 ^\.\\"\sJOIN\s*$/x 47 ) 48 { 49 printf "Bad control line $line of $file\n"; 50 $yield = 1; 51 } 52 } 53 else 54 { 55 if (/\\[^ef]|\\f[^IBP]/) 56 { 57 printf "Bad backslash in line $line of $file\n"; 58 $yield = 1; 59 } 60 } 61 } 62 63 close(IN); 64 } 65 66 exit $yield; 67 # End 68
