git-am.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005, 2006 Junio C Hamano
   4
   5 USAGE='[--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way]
   6   [--interactive] [--whitespace=<option>] <mbox>...
   7   or, when resuming [--skip | --resolved]'
   8 . git-sh-setup
   9
  10 git var GIT_COMMITTER_IDENT >/dev/null || exit
  11
  12 stop_here () {
  13     echo "$1" >"$dotest/next"
  14     exit 1
  15 }
  16
  17 stop_here_user_resolve () {
  18     if [ -n "$resolvemsg" ]; then
  19             echo "$resolvemsg"
  20             stop_here $1
  21     fi
  22     cmdline=$(basename $0)
  23     if test '' != "$interactive"
  24     then
  25         cmdline="$cmdline -i"
  26     fi
  27     if test '' != "$threeway"
  28     then
  29         cmdline="$cmdline -3"
  30     fi
  31     if test '.dotest' != "$dotest"
  32     then
  33         cmdline="$cmdline -d=$dotest"
  34     fi
  35     echo "When you have resolved this problem run \"$cmdline --resolved\"."
  36     echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
  37
  38     stop_here $1
  39 }
  40
  41 go_next () {
  42         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
  43                 "$dotest/patch" "$dotest/info"
  44         echo "$next" >"$dotest/next"
  45         this=$next
  46 }
  47
  48 fall_back_3way () {
  49     O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
  50
  51     rm -fr "$dotest"/patch-merge-*
  52     mkdir "$dotest/patch-merge-tmp-dir"
  53
  54     # First see if the patch records the index info that we can use.
  55     if git-apply -z --index-info "$dotest/patch" \
  56         >"$dotest/patch-merge-index-info" 2>/dev/null &&
  57         GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  58         git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
  59         GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  60         git-write-tree >"$dotest/patch-merge-base+" &&
  61         # index has the base tree now.
  62         GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  63         git-apply $binary --cached <"$dotest/patch"
  64     then
  65         echo Using index info to reconstruct a base tree...
  66         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
  67         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
  68     fi
  69
  70     test -f "$dotest/patch-merge-index" &&
  71     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git-write-tree) &&
  72     orig_tree=$(cat "$dotest/patch-merge-base") &&
  73     rm -fr "$dotest"/patch-merge-* || exit 1
  74
  75     echo Falling back to patching base and 3-way merge...
  76
  77     # This is not so wrong.  Depending on which base we picked,
  78     # orig_tree may be wildly different from ours, but his_tree
  79     # has the same set of wildly different changes in parts the
  80     # patch did not touch, so resolve ends up canceling them,
  81     # saying that we reverted all those changes.
  82
  83     git-merge-resolve $orig_tree -- HEAD $his_tree || {
  84             if test -d "$GIT_DIR/rr-cache"
  85             then
  86                 git-rerere
  87             fi
  88             echo Failed to merge in the changes.
  89             exit 1
  90     }
  91 }
  92
  93 prec=4
  94 rloga=am
  95 dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws= resolvemsg=
  96
  97 while case "$#" in 0) break;; esac
  98 do
  99         case "$1" in
 100         -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
 101         dotest=`expr "z$1" : 'z-[^=]*=\(.*\)'`; shift ;;
 102         -d|--d|--do|--dot|--dote|--dotes|--dotest)
 103         case "$#" in 1) usage ;; esac; shift
 104         dotest="$1"; shift;;
 105
 106         -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
 107         --interacti|--interactiv|--interactive)
 108         interactive=t; shift ;;
 109
 110         -b|--b|--bi|--bin|--bina|--binar|--binary)
 111         binary=t; shift ;;
 112
 113         -3|--3|--3w|--3wa|--3way)
 114         threeway=t; shift ;;
 115         -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
 116         sign=t; shift ;;
 117         -u|--u|--ut|--utf|--utf8)
 118         utf8=t; shift ;;
 119         -k|--k|--ke|--kee|--keep)
 120         keep=t; shift ;;
 121
 122         -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
 123         resolved=t; shift ;;
 124
 125         --sk|--ski|--skip)
 126         skip=t; shift ;;
 127
 128         --whitespace=*)
 129         ws=$1; shift ;;
 130
 131         --resolvemsg=*)
 132         resolvemsg=$(echo "$1" | sed -e "s/^--resolvemsg=//"); shift ;;
 133
 134         --reflog-action=*)
 135         rloga=`expr "z$1" : 'z-[^=]*=\(.*\)'`; shift ;;
 136
 137         --)
 138         shift; break ;;
 139         -*)
 140         usage ;;
 141         *)
 142         break ;;
 143         esac
 144 done
 145
 146 # If the dotest directory exists, but we have finished applying all the
 147 # patches in them, clear it out.
 148 if test -d "$dotest" &&
 149    last=$(cat "$dotest/last") &&
 150    next=$(cat "$dotest/next") &&
 151    test $# != 0 &&
 152    test "$next" -gt "$last"
 153 then
 154    rm -fr "$dotest"
 155 fi
 156
 157 if test -d "$dotest"
 158 then
 159         if test ",$#," != ",0," || ! tty -s
 160         then
 161                 die "previous dotest directory $dotest still exists but mbox given."
 162         fi
 163         resume=yes
 164 else
 165         # Make sure we are not given --skip nor --resolved
 166         test ",$skip,$resolved," = ,,, ||
 167                 die "Resolve operation not in progress, we are not resuming."
 168
 169         # Start afresh.
 170         mkdir -p "$dotest" || exit
 171
 172         git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 173                 rm -fr "$dotest"
 174                 exit 1
 175         }
 176
 177         # -b, -s, -u, -k and --whitespace flags are kept for the
 178         # resuming session after a patch failure.
 179         # -3 and -i can and must be given when resuming.
 180         echo "$binary" >"$dotest/binary"
 181         echo " $ws" >"$dotest/whitespace"
 182         echo "$sign" >"$dotest/sign"
 183         echo "$utf8" >"$dotest/utf8"
 184         echo "$keep" >"$dotest/keep"
 185         echo 1 >"$dotest/next"
 186 fi
 187
 188 case "$resolved" in
 189 '')
 190         files=$(git-diff-index --cached --name-only HEAD) || exit
 191         if [ "$files" ]; then
 192            echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 193            exit 1
 194         fi
 195 esac
 196
 197 if test "$(cat "$dotest/binary")" = t
 198 then
 199         binary=--allow-binary-replacement
 200 fi
 201 if test "$(cat "$dotest/utf8")" = t
 202 then
 203         utf8=-u
 204 fi
 205 if test "$(cat "$dotest/keep")" = t
 206 then
 207         keep=-k
 208 fi
 209 ws=`cat "$dotest/whitespace"`
 210 if test "$(cat "$dotest/sign")" = t
 211 then
 212         SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 213                         s/>.*/>/
 214                         s/^/Signed-off-by: /'
 215                 `
 216 else
 217         SIGNOFF=
 218 fi
 219
 220 last=`cat "$dotest/last"`
 221 this=`cat "$dotest/next"`
 222 if test "$skip" = t
 223 then
 224         this=`expr "$this" + 1`
 225         resume=
 226 fi
 227
 228 if test "$this" -gt "$last"
 229 then
 230         echo Nothing to do.
 231         rm -fr "$dotest"
 232         exit
 233 fi
 234
 235 while test "$this" -le "$last"
 236 do
 237         msgnum=`printf "%0${prec}d" $this`
 238         next=`expr "$this" + 1`
 239         test -f "$dotest/$msgnum" || {
 240                 resume=
 241                 go_next
 242                 continue
 243         }
 244
 245         # If we are not resuming, parse and extract the patch information
 246         # into separate files:
 247         #  - info records the authorship and title
 248         #  - msg is the rest of commit log message
 249         #  - patch is the patch body.
 250         #
 251         # When we are resuming, these files are either already prepared
 252         # by the user, or the user can tell us to do so by --resolved flag.
 253         case "$resume" in
 254         '')
 255                 git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 256                         <"$dotest/$msgnum" >"$dotest/info" ||
 257                         stop_here $this
 258                 git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
 259                 ;;
 260         esac
 261
 262         GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 263         GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 264         GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 265
 266         if test -z "$GIT_AUTHOR_EMAIL"
 267         then
 268                 echo "Patch does not have a valid e-mail address."
 269                 stop_here $this
 270         fi
 271
 272         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 273
 274         SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 275         case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 276
 277         case "$resume" in
 278         '')
 279             if test '' != "$SIGNOFF"
 280             then
 281                 LAST_SIGNED_OFF_BY=`
 282                     sed -ne '/^Signed-off-by: /p' \
 283                     "$dotest/msg-clean" |
 284                     tail -n 1
 285                 `
 286                 ADD_SIGNOFF=`
 287                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 288                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 289                     echo "$SIGNOFF"
 290                 }`
 291             else
 292                 ADD_SIGNOFF=
 293             fi
 294             {
 295                 echo "$SUBJECT"
 296                 if test -s "$dotest/msg-clean"
 297                 then
 298                         echo
 299                         cat "$dotest/msg-clean"
 300                 fi
 301                 if test '' != "$ADD_SIGNOFF"
 302                 then
 303                         echo "$ADD_SIGNOFF"
 304                 fi
 305             } >"$dotest/final-commit"
 306             ;;
 307         *)
 308                 case "$resolved$interactive" in
 309                 tt)
 310                         # This is used only for interactive view option.
 311                         git-diff-index -p --cached HEAD >"$dotest/patch"
 312                         ;;
 313                 esac
 314         esac
 315
 316         resume=
 317         if test "$interactive" = t
 318         then
 319             test -t 0 ||
 320             die "cannot be interactive without stdin connected to a terminal."
 321             action=again
 322             while test "$action" = again
 323             do
 324                 echo "Commit Body is:"
 325                 echo "--------------------------"
 326                 cat "$dotest/final-commit"
 327                 echo "--------------------------"
 328                 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 329                 read reply
 330                 case "$reply" in
 331                 [yY]*) action=yes ;;
 332                 [aA]*) action=yes interactive= ;;
 333                 [nN]*) action=skip ;;
 334                 [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
 335                        action=again ;;
 336                 [vV]*) action=again
 337                        LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 338                 *)     action=again ;;
 339                 esac
 340             done
 341         else
 342             action=yes
 343         fi
 344
 345         if test $action = skip
 346         then
 347                 go_next
 348                 continue
 349         fi
 350
 351         if test -x "$GIT_DIR"/hooks/applypatch-msg
 352         then
 353                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 354                 stop_here $this
 355         fi
 356
 357         echo
 358         echo "Applying '$SUBJECT'"
 359         echo
 360
 361         case "$resolved" in
 362         '')
 363                 git-apply $binary --index $ws "$dotest/patch"
 364                 apply_status=$?
 365                 ;;
 366         t)
 367                 # Resolved means the user did all the hard work, and
 368                 # we do not have to do any patch application.  Just
 369                 # trust what the user has in the index file and the
 370                 # working tree.
 371                 resolved=
 372                 changed="$(git-diff-index --cached --name-only HEAD)"
 373                 if test '' = "$changed"
 374                 then
 375                         echo "No changes - did you forget update-index?"
 376                         stop_here_user_resolve $this
 377                 fi
 378                 unmerged=$(git-ls-files -u)
 379                 if test -n "$unmerged"
 380                 then
 381                         echo "You still have unmerged paths in your index"
 382                         echo "did you forget update-index?"
 383                         stop_here_user_resolve $this
 384                 fi
 385                 apply_status=0
 386                 ;;
 387         esac
 388
 389         if test $apply_status = 1 && test "$threeway" = t
 390         then
 391                 if (fall_back_3way)
 392                 then
 393                     # Applying the patch to an earlier tree and merging the
 394                     # result may have produced the same tree as ours.
 395                     changed="$(git-diff-index --cached --name-only HEAD)"
 396                     if test '' = "$changed"
 397                     then
 398                             echo No changes -- Patch already applied.
 399                             go_next
 400                             continue
 401                     fi
 402                     # clear apply_status -- we have successfully merged.
 403                     apply_status=0
 404                 fi
 405         fi
 406         if test $apply_status != 0
 407         then
 408                 echo Patch failed at $msgnum.
 409                 stop_here_user_resolve $this
 410         fi
 411
 412         if test -x "$GIT_DIR"/hooks/pre-applypatch
 413         then
 414                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 415         fi
 416
 417         tree=$(git-write-tree) &&
 418         echo Wrote tree $tree &&
 419         parent=$(git-rev-parse --verify HEAD) &&
 420         commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
 421         echo Committed: $commit &&
 422         git-update-ref -m "$rloga: $SUBJECT" HEAD $commit $parent ||
 423         stop_here $this
 424
 425         if test -x "$GIT_DIR"/hooks/post-applypatch
 426         then
 427                 "$GIT_DIR"/hooks/post-applypatch
 428         fi
 429
 430         go_next
 431 done
 432
 433 rm -fr "$dotest"