templates/hooks--pre-commit

   1 #!/bin/sh
   2 #
   3 # An example hook script to verify what is about to be committed.
   4 # Called by git-commit with no arguments.  The hook should
   5 # exit with non-zero status after issuing an appropriate message if
   6 # it wants to stop the commit.
   7 #
   8 # To enable this hook, make this file executable.
   9
  10 # This is slightly modified from Andrew Morton's Perfect Patch.
  11 # Lines you introduce should not have trailing whitespace.
  12 # Also check for an indentation that has SP before a TAB.
  13 perl -e '
  14     my $fh;
  15     my $found_bad = 0;
  16     my $filename;
  17     my $reported_filename = "";
  18     my $lineno;
  19     sub bad_line {
  20         my ($why, $line) = @_;
  21         if (!$found_bad) {
  22             print STDERR "*\n";
  23             print STDERR "* You have some suspicious patch lines:\n";
  24             print STDERR "*\n";
  25             $found_bad = 1;
  26         }
  27         if ($reported_filename ne $filename) {
  28             print STDERR "* In $filename\n";
  29             $reported_filename = $filename;
  30         }
  31         print STDERR "* $why (line $lineno)\n";
  32         print STDERR "$filename:$lineno:$line\n";
  33     }
  34     open $fh, "-|", qw(git-diff-index -p -M --cached HEAD);
  35     while (<$fh>) {
  36         if (m|^diff --git a/(.*) b/\1$|) {
  37             $filename = $1;
  38             next;
  39         }
  40         if (/^@@ -\S+ \+(\d+)/) {
  41             $lineno = $1 - 1;
  42             next;
  43         }
  44         if (/^ /) {
  45             $lineno++;
  46             next;
  47         }
  48         if (s/^\+//) {
  49             $lineno++;
  50             chomp;
  51             if (/\s$/) {
  52                 bad_line("trailing whitespace", $_);
  53             }
  54             if (/^\s*   /) {
  55                 bad_line("indent SP followed by a TAB", $_);
  56             }
  57         }
  58     }
  59     exit($found_bad);
  60 '
  61