355 lines
10 KiB
Perl
355 lines
10 KiB
Perl
#!/usr/bin/perl
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use strict;
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use warnings;
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use File::Basename;
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# Desired indentation.
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my $indentation = 2;
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if ($#ARGV != 0) {
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print "\nUsage: stylecheck.pl source\n";
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exit;
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}
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my $source = $ARGV[0];
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open(my $in, "<", $source) or die "Can't open source: $!";
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my $lineno = 0;
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my @c_source = <$in>;
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my $filename = $source;
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$filename =~ y/\\/\//;
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$filename = basename($filename);
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my $i_level = 0;
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my $c_comment = "";
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my $state = "start";
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my $cr = "\r";
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my $lf = "\n";
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my $tab = "\t";
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my $f_lineno = 0;
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my $f_params = "";
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my $t_lineno = 0;
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my $t_type = "";
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my $e_lineno = 0;
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my $e_name = "";
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my $d_lineno = 0;
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my $d_name = "";
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my $d_name2 = "";
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my $d_name_app = "";
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my $scope = "";
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sub style {
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my $desc = shift;
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print("style: $desc at line $lineno in \"$filename\"\n");
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}
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sub error {
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my $desc = shift;
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print("error: $desc at line $lineno in \"$filename\"\n");
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}
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# Indentation check.
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sub check_indentation {
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shift =~ /^(\s*)/;
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if (length($1) != $i_level) {
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style "indentation violation";
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}
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}
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my $emptycnt = 0;
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foreach my $line (@c_source) {
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$lineno += 1;
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#****************************************************************************
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# Check on EOL.
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if (not ($line =~ /$cr$lf$/)) {
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error "detected malformed EOL";
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}
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$line =~ s/$cr//;
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$line =~ s/$lf//;
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#****************************************************************************
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# Check on trailing spaces.
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if ($line =~ /\s$/) {
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style "detected trailing spaces";
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}
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#****************************************************************************
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# Check on TABs.
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if ($line =~ /$tab/) {
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style "detected TAB";
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$line =~ s/$tab/ /;
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}
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#****************************************************************************
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# Check on empty lines.
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my $tmp = $line;
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$tmp =~ s/\s//;
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if (length($tmp) == 0) {
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$emptycnt = $emptycnt + 1;
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if ($emptycnt == 2) {
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style "detected multiple empty lines"
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}
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next;
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}
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else {
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$emptycnt = 0;
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}
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#****************************************************************************
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# Stripping strings content for ease of parsing, all strings become _string_.
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$line =~ s/\\\"//;
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if ($line =~ s/(\"[^"]*\")/_string_/) {
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# print "string: $1 replaced by _string_\n";
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}
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#******************************************************************************
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# State machine handling.
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if ($state eq "start") {
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# Searching for a global code element or a comment start.
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# Indentation check.
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check_indentation $line;
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#******************************************************************************
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# Functions matching, triggered by the "(".
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if ($line =~ /^(static|)\s*(struct|union|)\s*([a-zA-Z_][a-zA-Z0-9_]*\s*[*]*)\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*\(/) {
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# $1=scope $2$3=return type $4=name
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$line =~ s/^(static|)\s*(struct|union|)\s*([a-zA-Z_][a-zA-Z0-9_]*\s*[*]*)\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*\(//;
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# print "function: " . $1 . " " . $2 . " " . $3 . " " . $4 . "(";
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# Size of the match up to parameters.
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my $size = $+[0] - $-[0];
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# Function line number.
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$f_lineno = $lineno;
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# Checking if all parameters are on the same line.
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if ($line =~ /.*\)\s*{\s*$/) {
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$line =~ s/\)\s*{\s*$//;
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# print $line . "\n";
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$f_params = $line;
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$i_level = $indentation;
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$state = "infunc";
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}
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else {
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# print $line;
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$f_params = $line;
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$i_level = $size;
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$state = "inparams";
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}
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}
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#******************************************************************************
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# Structures matching.
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elsif ($line =~ /^\s*struct\s+([a-zA-Z_][a-zA-Z0-9_]*)/) {
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}
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#******************************************************************************
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# Single line "typedef" matching.
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elsif ($line =~ /^\s*typedef\s+([\sa-zA-Z0-9_]*\*+)\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*;\s*$/ or
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$line =~ /^\s*typedef\s+([\sa-zA-Z0-9_]*)\s+([a-zA-Z_][a-zA-Z0-9_]*)\s*;\s*$/) {
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}
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#******************************************************************************
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# Single line "typedef function" matching.
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elsif ($line =~ /^\s*typedef\s+.*\(\s*\*\s*([a-zA-Z0-9_]*)\s*\)\(/) {
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}
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#******************************************************************************
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# Multi line "typedef struct" matching.
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elsif ($line =~ /^\s*typedef\s*struct\s*([a-zA-Z_][a-zA-Z0-9_]*|\s?)?/) {
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$t_lineno = $lineno;
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$t_type = "struct " . $1;
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$state = "intypedef";
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}
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#******************************************************************************
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# Multi line "typedef enum" matching.
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elsif ($line =~ /^\s*typedef\s*enum\s*([a-zA-Z_][a-zA-Z0-9_]*|\s?)?/) {
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$t_lineno = $lineno;
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$t_type = "enum " . $1;
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if ($line =~ /([a-zA-Z_][a-zA-Z0-9_]*)\s*;\s*$/) {
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# Special case of a single-line typedef enum.
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}
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else {
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$state = "intypedef";
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}
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}
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#******************************************************************************
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# Multi line "enum" matching.
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elsif ($line =~ /^\s*enum\s*([a-zA-Z_][a-zA-Z0-9_]*)/) {
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$e_name = $1;
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$e_lineno = $lineno;
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if ($line =~ /;\s*$/) {
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# Special case of a single-line enum.
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}
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else {
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$state = "inenum";
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}
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}
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#******************************************************************************
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# Struct variable matching.
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elsif ($line =~ /^\s*(static|)\s+([\sa-zA-Z0-9_]*)\s+([a-zA-Z_][a-zA-Z0-9_]*\[.*\]|[a-zA-Z_][a-zA-Z0-9_]*)\s*(;\s*$|=)/ or
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$line =~ /^\s*(static|)\s+([\sa-zA-Z0-9_]*\*+)\s*([a-zA-Z_][a-zA-Z0-9_]*\[.*\]|[a-zA-Z_][a-zA-Z0-9_]*)\s*(;\s*$|=)/) {
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}
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#******************************************************************************
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# Variable matching.
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elsif ($line =~ /^\s*(static|).*\s+([a-zA-Z_][a-zA-Z0-9_]*\s*\*+|[a-zA-Z_][a-zA-Z0-9_]*)\s*([a-zA-Z_][a-zA-Z0-9_]*\[.*\]|[a-zA-Z_][a-zA-Z0-9_]*)\s*(;\s*$|=)/) {
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# variable declaration.
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}
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#******************************************************************************
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# #nclude matching.
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elsif ($line =~ /^\s*#include\s+"([^"]+)"/) {
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}
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#******************************************************************************
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# #if matching.
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elsif ($line =~ /^\s*#if\s+(.+)/) {
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}
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#******************************************************************************
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# #ifdef matching.
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elsif ($line =~ /^\s*#ifdef\s+([\w_]+)/) {
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}
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#******************************************************************************
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# #define matching.
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elsif ($line =~ /^\s*#define\s+([\w_]+)\s*(.*)/) {
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$d_lineno = $lineno;
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$d_name = $1;
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$d_name2 = $2;
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# enum typedef declaration.
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if ($line =~ /[^\\]$/) {
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# Special case of a single-line typedef enum.
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}
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else {
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$state = "indefine";
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}
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}
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#******************************************************************************
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# Comment start matching.
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elsif ("$line" =~ /^\s*\/\*/) {
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if ("$line" =~ /\*\//) {
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# Special case of single line comments.
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$line =~ /^\s*(\/\*.*\*\/)/;
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}
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else {
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# Start of multi-line comment.
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$line =~ /(\/\*.*)/;
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$c_comment = $1 . " ";
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$state = "incomment";
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}
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}
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}
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#******************************************************************************
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# Scanning for function parameters end and function body begin.
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elsif ($state eq "inparams") {
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# Indentation check.
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check_indentation $line;
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if ($line =~ /.*\)\s*{\s*$/) {
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# print $line . "\n";
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$line =~ s/\)\s*{\s*$//;
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$f_params = $f_params . $line;
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$i_level = $indentation;
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$state = "infunc";
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print "$f_params\n";
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}
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else {
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$f_params = $f_params . $line;
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# print $line;
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}
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}
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#******************************************************************************
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# Scanning for function end.
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elsif ($state eq "infunc") {
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# Checking for function end, the final "}".
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if ($line =~ /^\}/) {
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$i_level = 0;
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$state = "start";
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next;
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}
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# Indentation check.
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check_indentation $line;
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if ($line =~ /(\/\*.*\*\/)/) {
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# Single line comments inside functions.
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}
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elsif ("$line" =~ /(\/\*.*)/) {
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# Start of multi-line comment inside a function.
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$c_comment = $1 . " ";
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$state = "infunccomment";
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}
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}
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#******************************************************************************
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# Scanning for comment end within a function body.
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elsif ($state eq "infunccomment") {
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if ("$line" =~ /\*\/\s*$/) {
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# End of mult-line comment.
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$line =~ /(.*\*\/)/;
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$c_comment .= $1;
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$state = "infunc";
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}
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else {
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# Add the whole line.
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$c_comment .= $line . " ";
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}
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}
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#******************************************************************************
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# Scanning for comment end.
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elsif ($state eq "incomment") {
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if ("$line" =~ /\*\/\s*$/) {
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# End of mult-line comment.
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$line =~ /(.*\*\/)/;
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$c_comment .= $1;
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$state = "start";
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}
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else {
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# Add the whole line.
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$c_comment .= $line . " ";
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}
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}
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#******************************************************************************
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# Scanning for typedef end.
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elsif ($state eq "intypedef") {
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if ($line =~ /^\s*}\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*;\s*$/) {
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# typedef end because the final '} <name>;'.
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$state = "start";
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}
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}
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#******************************************************************************
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# Scanning for enum end.
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elsif ($state eq "inenum") {
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if ($line =~ /^\s*}\s*;\s*$/) {
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# enum end because the final '};'.
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$state = "start";
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}
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}
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#******************************************************************************
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# Scanning for define end.
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elsif ($state eq "indefine") {
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if ($line =~ /[^\\]$/) {
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# define end because the final 'not \'.
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# remove blank from starting of the line
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$line =~ s/^\s+|\s+$//g;
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# Add the whole line.
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$d_name2 .= $line;
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$state = "start";
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}
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else {
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# Add the whole line.
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# $line =~ s/^\s+|\s+$//g;
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$line =~ s/^\s*(.*?)\s*$/$1/;
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$d_name2 .= $line;
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}
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}
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}
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close $in or die "$in: $!";
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