git.ozlabs.org Git - next-scripts/blob - check_fixes

   1 #!/bin/bash
   2
   3 if [ "$#" -lt 1 ]; then
   4         printf 'Usage: %s <commit range>\n', "$0" 1>&2
   5         exit 1
   6 fi
   7
   8 commits=$(git rev-list --no-merges -i --grep='^[[:space:]]*Fixes:' "$@")
   9 if [ -z "$commits" ]; then
  10         exit 0
  11 fi
  12
  13 # This should be a git tree that contains *only* Linus' tree
  14 Linus_tree="${HOME}/kernels/linus.git"
  15 split_re='^([[:xdigit:]]+)[[:space:]]+(.*)$'
  16 nl=$'\n'
  17
  18 # Strip the leading and training spaces from a string
  19 strip_spaces()
  20 {
  21         [[ "$1" =~ ^[[:space:]]*(.*[^[:space:]])[[:space:]]*$ ]]
  22         echo "${BASH_REMATCH[1]}"
  23 }
  24
  25 for c in $commits; do
  26
  27         commit_log=$(git log -1 --format='%h ("%s")' "$c")
  28         commit_msg="In commit
  29
  30   $commit_log
  31
  32 "
  33
  34         fixes_lines=$(git log -1 --format='%B' "$c" |
  35                         grep -i '^[[:space:]]*Fixes:')
  36
  37         while read -r fline; do
  38                 [[ "$fline" =~ ^[[:space:]]*[Ff][Ii][Xx][Ee][Ss]:[[:space:]]*(.*)$ ]]
  39                 f="${BASH_REMATCH[1]}"
  40                 fixes_msg="Fixes tag
  41
  42   $fline
  43
  44 has these problem(s):
  45
  46 "
  47                 sha=
  48                 subject=
  49                 msg=
  50                 [[ "$f" =~ $split_re ]]
  51                 sha="${BASH_REMATCH[1]}"
  52                 subject="${BASH_REMATCH[2]}"
  53
  54                 if [ -z "$sha" ]; then
  55                         printf '%s%s  - %s\n' "$commit_msg" "$fixes_msg" 'No SHA1 recognised'
  56                         commit_msg=''
  57                         continue
  58                 fi
  59                 if ! git rev-parse -q --verify "$sha" >/dev/null; then
  60                         printf '%s%s  - %s\n' "$commit_msg" "$fixes_msg" 'Target SHA1 does not exist'
  61                         commit_msg=''
  62                         continue
  63                 fi
  64
  65                 if [ "${#sha}" -lt 12 ]; then
  66                         msg="${msg:+${msg}${nl}}  - SHA1 should be at least 12 digits long"
  67                 fi
  68                 # reduce the subject to the part between () if there
  69                 if [[ "$subject" =~ ^\((.*)\) ]]; then
  70                         subject="${BASH_REMATCH[1]}"
  71                 elif [[ "$subject" =~ ^\((.*) ]]; then
  72                         subject="${BASH_REMATCH[1]}"
  73                         msg="${msg:+${msg}${nl}}  - Subject has leading but no trailing parentheses"
  74                 fi
  75
  76                 # strip matching quotes at the start and end of the subject
  77                 # the unicode characters in the classes are
  78                 # U+201C LEFT DOUBLE QUOTATION MARK
  79                 # U+201D RIGHT DOUBLE QUOTATION MARK
  80                 # U+2018 LEFT SINGLE QUOTATION MARK
  81                 # U+2019 RIGHT SINGLE QUOTATION MARK
  82                 re1=$'^[\"\u201C](.*)[\"\u201D]$'
  83                 re2=$'^[\'\u2018](.*)[\'\u2019]$'
  84                 re3=$'^[\"\'\u201C\u2018](.*)$'
  85                 if [[ "$subject" =~ $re1 ]]; then
  86                         subject="${BASH_REMATCH[1]}"
  87                 elif [[ "$subject" =~ $re2 ]]; then
  88                         subject="${BASH_REMATCH[1]}"
  89                 elif [[ "$subject" =~ $re3 ]]; then
  90                         subject="${BASH_REMATCH[1]}"
  91                         msg="${msg:+${msg}${nl}}  - Subject has leading but no trailing quotes"
  92                 fi
  93
  94                 subject=$(strip_spaces "$subject")
  95
  96                 target_subject=$(git log -1 --format='%s' "$sha")
  97                 target_subject=$(strip_spaces "$target_subject")
  98
  99                 # match with ellipses
 100                 case "$subject" in
 101                 *...)   subject="${subject%...}"
 102                         target_subject="${target_subject:0:${#subject}}"
 103                         ;;
 104                 ...*)   subject="${subject#...}"
 105                         target_subject="${target_subject: -${#subject}}"
 106                         ;;
 107                 *\ ...\ *)
 108                         s1="${subject% ... *}"
 109                         s2="${subject#* ... }"
 110                         subject="$s1 $s2"
 111                         t1="${target_subject:0:${#s1}}"
 112                         t2="${target_subject: -${#s2}}"
 113                         target_subject="$t1 $t2"
 114                         ;;
 115                 esac
 116                 subject=$(strip_spaces "$subject")
 117                 target_subject=$(strip_spaces "$target_subject")
 118
 119                 if [ "$subject" != "${target_subject:0:${#subject}}" ]; then
 120                         msg="${msg:+${msg}${nl}}  - Subject does not match target commit subject"
 121                 fi
 122                 lsha=$(cd "$Linus_tree" && git rev-parse -q --verify "$sha")
 123                 if [ -z "$lsha" ]; then
 124                         count=$(git rev-list --count "$sha".."$c")
 125                         if [ "$count" -eq 0 ]; then
 126                                 msg="${msg:+${msg}${nl}}  - Target is not an ancestor of this commit"
 127                         fi
 128                 fi
 129                 if [ "$msg" ]; then
 130                         printf '%s%s%s\n' "$commit_msg" "$fixes_msg" "$msg"
 131                         commit_msg=''
 132                 fi
 133         done <<< "$fixes_lines"
 134 done
 135
 136 exit 0