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Subject[PATCH] checkpatch: add --typedefsfile
Date
When using checkpatch on out-of-tree code, it may occur that some
project-specific types are used, which will cause spurious warnings.
Add the --typedefsfile option as a way to extend the known types and
deal with this issue.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
---
scripts/checkpatch.pl | 56 ++++++++++++++++++++++++++++++++++-----------------
1 file changed, 37 insertions(+), 19 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index baa3c7b..eb55f5f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -55,6 +55,7 @@ my $spelling_file = "$D/spelling.txt";
my $codespell = 0;
my $codespellfile = "/usr/share/codespell/dictionary.txt";
my $conststructsfile = "$D/const_structs.checkpatch";
+my $typedefsfile = "";
my $color = 1;
my $allow_c99_comments = 1;

@@ -113,6 +114,7 @@ Options:
--codespell Use the codespell dictionary for spelling/typos
(default:/usr/share/codespell/dictionary.txt)
--codespellfile Use this codespell dictionary
+ --typedefsfile Read additional types from this file
--color Use colors when output is STDOUT (default: on)
-h, --help, --version display this help and exit

@@ -208,6 +210,7 @@ GetOptions(
'test-only=s' => \$tst_only,
'codespell!' => \$codespell,
'codespellfile=s' => \$codespellfile,
+ 'typedefsfile=s' => \$typedefsfile,
'color!' => \$color,
'h|help' => \$help,
'version' => \$help
@@ -629,28 +632,43 @@ if ($codespell) {

$misspellings = join("|", sort keys %spelling_fix) if keys %spelling_fix;

+sub read_words {
+ my ($wordsRef, $file) = @_;
+
+ if (open(my $words, '<', $file)) {
+ while (<$words>) {
+ my $line = $_;
+
+ $line =~ s/\s*\n?$//g;
+ $line =~ s/^\s*//g;
+
+ next if ($line =~ m/^\s*#/);
+ next if ($line =~ m/^\s*$/);
+ if ($line =~ /\s/) {
+ print("$file: '$line' invalid - ignored\n");
+ next;
+ }
+
+ $$wordsRef .= '|' if ($$wordsRef ne "");
+ $$wordsRef .= $line;
+ }
+ close($file);
+ return 1;
+ }
+
+ return 0;
+}
+
my $const_structs = "";
-if (open(my $conststructs, '<', $conststructsfile)) {
- while (<$conststructs>) {
- my $line = $_;
+read_words(\$const_structs, $conststructsfile)
+ or warn "No structs that should be const will be found - file '$conststructsfile': $!\n";

- $line =~ s/\s*\n?$//g;
- $line =~ s/^\s*//g;
-
- next if ($line =~ m/^\s*#/);
- next if ($line =~ m/^\s*$/);
- if ($line =~ /\s/) {
- print("$conststructsfile: '$line' invalid - ignored\n");
- next;
- }
-
- $const_structs .= '|' if ($const_structs ne "");
- $const_structs .= $line;
- }
- close($conststructsfile);
-} else {
- warn "No structs that should be const will be found - file '$conststructsfile': $!\n";
+my $typeOtherTypedefs = "";
+if (length($typedefsfile)) {
+ read_words(\$typeOtherTypedefs, $typedefsfile)
+ or warn "No additional types will be considered - file '$typedefsfile': $!\n";
}
+$typeTypedefs .= '|' . $typeOtherTypedefs if ($typeOtherTypedefs ne "");

sub build_types {
my $mods = "(?x: \n" . join("|\n ", (@modifierList, @modifierListFile)) . "\n)";
--
2.7.4
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