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77 lines
2.0 KiB
Perl
Executable File
77 lines
2.0 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# @(#) mk2knr.pl - generates a perl script that converts lexemes to K&R-style
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#
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# How to use this script:
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# - In the busybox directory type 'scripts/mk2knr.pl files-you-want-to-convert'
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# - Review the 'convertme.pl' script generated and remove / edit any of the
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# substitutions in there (please especially check for false positives)
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# - Type './convertme.pl same-files-as-before'
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# - Compile and see if it works
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#
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# BUGS: This script does not ignore strings inside comments or strings inside
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# quotes (it probably should).
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# set this to something else if you want
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$convertme = 'convertme.pl';
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# internal-use variables (don't touch)
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$convert = 0;
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%converted = ();
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# prepare the "convert me" file
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open(CM, ">$convertme") or die "convertme.pl $!";
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print CM "#!/usr/bin/perl -p -i\n\n";
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# process each file passed on the cmd line
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while (<>) {
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# if the line says "getopt" in it anywhere, we don't want to muck with it
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# because option lists tend to include strings like "cxtzvOf:" which get
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# matched by the javaStyle / Hungarian and PascalStyle regexps below
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next if /getopt/;
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# tokenize the string into just the variables
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while (/([a-zA-Z_][a-zA-Z0-9_]*)/g) {
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$var = $1;
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# ignore the word "BusyBox"
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next if ($var =~ /BusyBox/);
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# this checks for javaStyle or szHungarianNotation
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$convert++ if ($var =~ /^[a-z]+[A-Z][a-z]+/);
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# this checks for PascalStyle
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$convert++ if ($var =~ /^[A-Z][a-z]+[A-Z][a-z]+/);
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if ($convert) {
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$convert = 0;
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# skip ahead if we've already dealt with this one
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next if ($converted{$var});
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# record that we've dealt with this var
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$converted{$var} = 1;
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print CM "s/\\b$var\\b/"; # more to come in just a minute
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# change the first letter to lower-case
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$var = lcfirst($var);
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# put underscores before all remaining upper-case letters
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$var =~ s/([A-Z])/_$1/g;
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# now change the remaining characters to lower-case
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$var = lc($var);
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print CM "$var/g;\n";
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}
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}
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}
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# tidy up and make the $convertme script executable
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close(CM);
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chmod 0755, $convertme;
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