6d99470e78
git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@4336 ea778897-0a13-0410-b9d1-a72fbfd435f5
109 lines
2.8 KiB
Perl
Executable File
109 lines
2.8 KiB
Perl
Executable File
#!/usr/bin/env perl
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# Copyright: 2009, Nick Treleaven
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# License: GNU GPL V2 or later, as published by the Free Software Foundation, USA.
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# Warranty: NONE
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# Re-align C source code for Geany.
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# Doesn't handle indents/blank lines/anything complicated ;-)
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use strict;
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use warnings;
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use Getopt::Std;
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my %args = ();
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getopts('w', \%args);
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my $opt_write = $args{'w'};
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my $argc = $#ARGV + 1;
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my $scriptname = $0;
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(($argc == 1) or ($argc >= 1 and $opt_write)) or die <<END;
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Usage:
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$scriptname sourcefile [>outfile]
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Print formatted output to STDOUT or outfile.
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Warning: do not use the same file for outfile.
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$scriptname -w sourcefile(s)
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Writes to the file(s) in-place.
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Warning: backup your file(s) first or use clean version control files.
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END
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sub parse($)
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{
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my ($infile) = @_;
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my @lines;
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open(INPUT, $infile) or die "Couldn't open $infile for reading: $!\n";
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while (<INPUT>) {
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my $line = $_; # read a line, including \n char
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# strip trailing space & newline
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$line =~ s/\s+$//g;
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# for now, don't process lines with comments, strings, preproc non-defines, overflowed lines or chars
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# multi-line comment internal lines are skipped only if they start with '* '.
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if (!($line =~ m,/\*|\*/|//|"|\\$|',) and !($line =~ m/^\s*(\*\s|#[^d])/)) {
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# make binary operators have *one* space each side
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# operators must have longer variants first otherwise trailing operators can be broken e.g. "+ ="
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# '*' ignored as could be pointer
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my $ops = '<<=,<<,>>=,>>,<=,>=,<,>,||,|=,|,&&,&=,-=,+=,+,*=,/=,/,==,!=,%=,%,^=,^,=';
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$ops =~ s/([|*+])/\\$1/g; # escape regex chars
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$ops =~ s/,/|/g;
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$line =~ s/([\w)\]]) ?($ops) ?([\w(]|$)/$1 $2 $3/g;
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# space binary operators that can conflict with unaries with cast and/or 'return -1/&foo'
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# '-' could be unary "(gint)-j"
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# '&' could be address-of "(type*)&foo"
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$line =~ s/([\w\]])(-|&) ?([\w(]|$)/$1 $2 $3/g;
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# space ternary conditional operator
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$line =~ s/ ?\? ?(.+?) ?: ?/ ? $1 : /g;
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# space comma operator (allowing for possible alignment space afterwards)
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$line =~ s/ ?,(\S)/, $1/g;
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# space after statements
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my $statements = 'for|if|while|switch';
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$line =~ s/\b($statements)\b\s*/$1 /g;
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# no space on inside of brackets
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$line =~ s/\(\s+/(/g;
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$line =~ s/(\S)\s+\)/$1)/g;
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# enforce 'fn(void);' in prototypes
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$line =~ s/^(\w.+\w\()\);$/$1void);/;
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}
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# strip trailing space again (e.g. a trailing operator now has space afterwards)
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$line =~ s/\s+$//g;
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push(@lines, $line);
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}
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close(INPUT);
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my $text = join("\n", @lines);
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undef @lines; # free memory
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$text .= "\n";
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# 1+ newline -> 2 newlines after function
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$text =~ s/^}\n\n+([^\n])/}\n\n\n$1/gm;
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if (!$opt_write) {
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print $text;
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}
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else {
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open(OUTPUT, ">$infile") or die "Couldn't open $infile for writing: $!\n";
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print OUTPUT $text;
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close(OUTPUT);
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}
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}
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foreach my $infile (@ARGV)
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{
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parse($infile);
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}
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