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 # Detect case challenges
  11
  12 case_challenge=`git ls-files | tr A-Z a-z | sort | uniq -d`
  13 if [ -n "$case_challenge" ]
  14 then
  15         echo >&2 "index contains file names differing only in case."
  16         echo >&2 "lowercase names follow:"
  17         echo >&2 "$case_challenge"
  18         exit 1
  19 fi
  20
  21 # This is slightly modified from Andrew Morton's Perfect Patch.
  22 # Lines you introduce should not have trailing whitespace.
  23 # Also check for an indentation that has SP before a TAB.
  24
  25 if git-rev-parse --verify HEAD 2>/dev/null
  26 then
  27         git-diff-index -p -M --cached HEAD --
  28 else
  29         # NEEDSWORK: we should produce a diff with an empty tree here
  30         # if we want to do the same verification for the initial import.
  31         :
  32 fi |
  33 perl -e '
  34     my $found_bad = 0;
  35     my $filename;
  36     my $reported_filename = "";
  37     my $lineno;
  38     sub bad_line {
  39         my ($why, $line) = @_;
  40         if (!$found_bad) {
  41             print STDERR "*\n";
  42             print STDERR "* You have some suspicious patch lines:\n";
  43             print STDERR "*\n";
  44             $found_bad = 1;
  45         }
  46         if ($reported_filename ne $filename) {
  47             print STDERR "* In $filename\n";
  48             $reported_filename = $filename;
  49         }
  50         print STDERR "* $why (line $lineno)\n";
  51         print STDERR "$filename:$lineno:$line\n";
  52     }
  53     while (<>) {
  54         if (m|^diff --git a/(.*) b/\1$|) {
  55             $filename = $1;
  56             next;
  57         }
  58         if (/^@@ -\S+ \+(\d+)/) {
  59             $lineno = $1 - 1;
  60             next;
  61         }
  62         if (/^ /) {
  63             $lineno++;
  64             next;
  65         }
  66         if (s/^\+//) {
  67             $lineno++;
  68             chomp;
  69             if (/\s$/) {
  70                 bad_line("trailing whitespace", $_);
  71             }
  72             if (/^\s* \t/) {
  73                 bad_line("indent SP followed by a TAB", $_);
  74             }
  75             if (/^([<>])\1{6} |^={7}$/) {
  76                 bad_line("unresolved merge conflict", $_);
  77             }
  78         }
  79     }
  80     exit($found_bad);
  81 '