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     cmdline=$(basename $0)
  19     if test '' != "$interactive"
  20     then
  21         cmdline="$cmdline -i"
  22     fi
  23     if test '' != "$threeway"
  24     then
  25         cmdline="$cmdline -3"
  26     fi
  27     if test '.dotest' != "$dotest"
  28     then
  29         cmdline="$cmdline -d=$dotest"
  30     fi
  31     echo "When you have resolved this problem run \"$cmdline --resolved\"."
  32     echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
  33
  34     stop_here $1
  35 }
  36
  37 go_next () {
  38         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
  39                 "$dotest/patch" "$dotest/info"
  40         echo "$next" >"$dotest/next"
  41         this=$next
  42 }
  43
  44 fall_back_3way () {
  45     O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
  46
  47     rm -fr "$dotest"/patch-merge-*
  48     mkdir "$dotest/patch-merge-tmp-dir"
  49
  50     # First see if the patch records the index info that we can use.
  51     if git-apply -z --index-info "$dotest/patch" \
  52         >"$dotest/patch-merge-index-info" 2>/dev/null &&
  53         GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  54         git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
  55         GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  56         git-write-tree >"$dotest/patch-merge-base+" &&
  57         # index has the base tree now.
  58         (
  59             cd "$dotest/patch-merge-tmp-dir" &&
  60             GIT_INDEX_FILE="../patch-merge-tmp-index" \
  61             GIT_OBJECT_DIRECTORY="$O_OBJECT" \
  62             git-apply $binary --index <../patch
  63         )
  64     then
  65         echo Using index info to reconstruct a base tree...
  66         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
  67         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
  68     else
  69         # Otherwise, try nearby trees that can be used to apply the
  70         # patch.
  71         (
  72             N=10
  73
  74             # Hoping the patch is against our recent commits...
  75             git-rev-list --max-count=$N HEAD
  76
  77             # or hoping the patch is against known tags...
  78             git-ls-remote --tags .
  79         ) |
  80         while read base junk
  81         do
  82             # See if we have it as a tree...
  83             git-cat-file tree "$base" >/dev/null 2>&1 || continue
  84
  85             rm -fr "$dotest"/patch-merge-* &&
  86             mkdir "$dotest/patch-merge-tmp-dir" || break
  87             (
  88                 cd "$dotest/patch-merge-tmp-dir" &&
  89                 GIT_INDEX_FILE=../patch-merge-tmp-index &&
  90                 GIT_OBJECT_DIRECTORY="$O_OBJECT" &&
  91                 export GIT_INDEX_FILE GIT_OBJECT_DIRECTORY &&
  92                 git-read-tree "$base" &&
  93                 git-apply $binary --index &&
  94                 mv ../patch-merge-tmp-index ../patch-merge-index &&
  95                 echo "$base" >../patch-merge-base
  96             ) <"$dotest/patch"  2>/dev/null && break
  97         done
  98     fi
  99
 100     test -f "$dotest/patch-merge-index" &&
 101     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git-write-tree) &&
 102     orig_tree=$(cat "$dotest/patch-merge-base") &&
 103     rm -fr "$dotest"/patch-merge-* || exit 1
 104
 105     echo Falling back to patching base and 3-way merge...
 106
 107     # This is not so wrong.  Depending on which base we picked,
 108     # orig_tree may be wildly different from ours, but his_tree
 109     # has the same set of wildly different changes in parts the
 110     # patch did not touch, so resolve ends up cancelling them,
 111     # saying that we reverted all those changes.
 112
 113     git-merge-resolve $orig_tree -- HEAD $his_tree || {
 114             if test -d "$GIT_DIR/rr-cache"
 115             then
 116                 git-rerere
 117             fi
 118             echo Failed to merge in the changes.
 119             exit 1
 120     }
 121 }
 122
 123 prec=4
 124 dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws=
 125
 126 while case "$#" in 0) break;; esac
 127 do
 128         case "$1" in
 129         -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
 130         dotest=`expr "$1" : '-[^=]*=\(.*\)'`; shift ;;
 131         -d|--d|--do|--dot|--dote|--dotes|--dotest)
 132         case "$#" in 1) usage ;; esac; shift
 133         dotest="$1"; shift;;
 134
 135         -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
 136         --interacti|--interactiv|--interactive)
 137         interactive=t; shift ;;
 138
 139         -b|--b|--bi|--bin|--bina|--binar|--binary)
 140         binary=t; shift ;;
 141
 142         -3|--3|--3w|--3wa|--3way)
 143         threeway=t; shift ;;
 144         -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
 145         sign=t; shift ;;
 146         -u|--u|--ut|--utf|--utf8)
 147         utf8=t; shift ;;
 148         -k|--k|--ke|--kee|--keep)
 149         keep=t; shift ;;
 150
 151         -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
 152         resolved=t; shift ;;
 153
 154         --sk|--ski|--skip)
 155         skip=t; shift ;;
 156
 157         --whitespace=*)
 158         ws=$1; shift ;;
 159
 160         --)
 161         shift; break ;;
 162         -*)
 163         usage ;;
 164         *)
 165         break ;;
 166         esac
 167 done
 168
 169 # If the dotest directory exists, but we have finished applying all the
 170 # patches in them, clear it out.
 171 if test -d "$dotest" &&
 172    last=$(cat "$dotest/last") &&
 173    next=$(cat "$dotest/next") &&
 174    test $# != 0 &&
 175    test "$next" -gt "$last"
 176 then
 177    rm -fr "$dotest"
 178 fi
 179
 180 if test -d "$dotest"
 181 then
 182         test ",$#," = ",0," ||
 183         die "previous dotest directory $dotest still exists but mbox given."
 184         resume=yes
 185 else
 186         # Make sure we are not given --skip nor --resolved
 187         test ",$skip,$resolved," = ,,, ||
 188                 die "we are not resuming."
 189
 190         # Start afresh.
 191         mkdir -p "$dotest" || exit
 192
 193         git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 194                 rm -fr "$dotest"
 195                 exit 1
 196         }
 197
 198         # -b, -s, -u, -k and --whitespace flags are kept for the
 199         # resuming session after a patch failure.
 200         # -3 and -i can and must be given when resuming.
 201         echo "$binary" >"$dotest/binary"
 202         echo " $ws" >"$dotest/whitespace"
 203         echo "$sign" >"$dotest/sign"
 204         echo "$utf8" >"$dotest/utf8"
 205         echo "$keep" >"$dotest/keep"
 206         echo 1 >"$dotest/next"
 207 fi
 208
 209 case "$resolved" in
 210 '')
 211         files=$(git-diff-index --cached --name-only HEAD) || exit
 212         if [ "$files" ]; then
 213            echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 214            exit 1
 215         fi
 216 esac
 217
 218 if test "$(cat "$dotest/binary")" = t
 219 then
 220         binary=--allow-binary-replacement
 221 fi
 222 if test "$(cat "$dotest/utf8")" = t
 223 then
 224         utf8=-u
 225 fi
 226 if test "$(cat "$dotest/keep")" = t
 227 then
 228         keep=-k
 229 fi
 230 ws=`cat "$dotest/whitespace"`
 231 if test "$(cat "$dotest/sign")" = t
 232 then
 233         SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 234                         s/>.*/>/
 235                         s/^/Signed-off-by: /'
 236                 `
 237 else
 238         SIGNOFF=
 239 fi
 240
 241 last=`cat "$dotest/last"`
 242 this=`cat "$dotest/next"`
 243 if test "$skip" = t
 244 then
 245         this=`expr "$this" + 1`
 246         resume=
 247 fi
 248
 249 if test "$this" -gt "$last"
 250 then
 251         echo Nothing to do.
 252         rm -fr "$dotest"
 253         exit
 254 fi
 255
 256 while test "$this" -le "$last"
 257 do
 258         msgnum=`printf "%0${prec}d" $this`
 259         next=`expr "$this" + 1`
 260         test -f "$dotest/$msgnum" || {
 261                 resume=
 262                 go_next
 263                 continue
 264         }
 265
 266         # If we are not resuming, parse and extract the patch information
 267         # into separate files:
 268         #  - info records the authorship and title
 269         #  - msg is the rest of commit log message
 270         #  - patch is the patch body.
 271         #
 272         # When we are resuming, these files are either already prepared
 273         # by the user, or the user can tell us to do so by --resolved flag.
 274         case "$resume" in
 275         '')
 276                 git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 277                         <"$dotest/$msgnum" >"$dotest/info" ||
 278                         stop_here $this
 279                 git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
 280                 ;;
 281         esac
 282
 283         GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 284         GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 285         GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 286
 287         if test -z "$GIT_AUTHOR_EMAIL"
 288         then
 289                 echo "Patch does not have a valid e-mail address."
 290                 stop_here $this
 291         fi
 292
 293         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 294
 295         SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 296         case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 297
 298         case "$resume" in
 299         '')
 300             if test '' != "$SIGNOFF"
 301             then
 302                 LAST_SIGNED_OFF_BY=`
 303                     sed -ne '/^Signed-off-by: /p' \
 304                     "$dotest/msg-clean" |
 305                     tail -n 1
 306                 `
 307                 ADD_SIGNOFF=`
 308                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 309                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 310                     echo "$SIGNOFF"
 311                 }`
 312             else
 313                 ADD_SIGNOFF=
 314             fi
 315             {
 316                 echo "$SUBJECT"
 317                 if test -s "$dotest/msg-clean"
 318                 then
 319                         echo
 320                         cat "$dotest/msg-clean"
 321                 fi
 322                 if test '' != "$ADD_SIGNOFF"
 323                 then
 324                         echo "$ADD_SIGNOFF"
 325                 fi
 326             } >"$dotest/final-commit"
 327             ;;
 328         *)
 329                 case "$resolved$interactive" in
 330                 tt)
 331                         # This is used only for interactive view option.
 332                         git-diff-index -p --cached HEAD >"$dotest/patch"
 333                         ;;
 334                 esac
 335         esac
 336
 337         resume=
 338         if test "$interactive" = t
 339         then
 340             test -t 0 ||
 341             die "cannot be interactive without stdin connected to a terminal."
 342             action=again
 343             while test "$action" = again
 344             do
 345                 echo "Commit Body is:"
 346                 echo "--------------------------"
 347                 cat "$dotest/final-commit"
 348                 echo "--------------------------"
 349                 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 350                 read reply
 351                 case "$reply" in
 352                 [yY]*) action=yes ;;
 353                 [aA]*) action=yes interactive= ;;
 354                 [nN]*) action=skip ;;
 355                 [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
 356                        action=again ;;
 357                 [vV]*) action=again
 358                        LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 359                 *)     action=again ;;
 360                 esac
 361             done
 362         else
 363             action=yes
 364         fi
 365
 366         if test $action = skip
 367         then
 368                 go_next
 369                 continue
 370         fi
 371
 372         if test -x "$GIT_DIR"/hooks/applypatch-msg
 373         then
 374                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 375                 stop_here $this
 376         fi
 377
 378         echo
 379         echo "Applying '$SUBJECT'"
 380         echo
 381
 382         case "$resolved" in
 383         '')
 384                 git-apply $binary --index $ws "$dotest/patch"
 385                 apply_status=$?
 386                 ;;
 387         t)
 388                 # Resolved means the user did all the hard work, and
 389                 # we do not have to do any patch application.  Just
 390                 # trust what the user has in the index file and the
 391                 # working tree.
 392                 resolved=
 393                 changed="$(git-diff-index --cached --name-only HEAD)"
 394                 if test '' = "$changed"
 395                 then
 396                         echo "No changes - did you forget update-index?"
 397                         stop_here_user_resolve $this
 398                 fi
 399                 unmerged=$(git-ls-files -u)
 400                 if test -n "$unmerged"
 401                 then
 402                         echo "You still have unmerged paths in your index"
 403                         echo "did you forget update-index?"
 404                         stop_here_user_resolve $this
 405                 fi
 406                 apply_status=0
 407                 ;;
 408         esac
 409
 410         if test $apply_status = 1 && test "$threeway" = t
 411         then
 412                 if (fall_back_3way)
 413                 then
 414                     # Applying the patch to an earlier tree and merging the
 415                     # result may have produced the same tree as ours.
 416                     changed="$(git-diff-index --cached --name-only HEAD)"
 417                     if test '' = "$changed"
 418                     then
 419                             echo No changes -- Patch already applied.
 420                             go_next
 421                             continue
 422                     fi
 423                     # clear apply_status -- we have successfully merged.
 424                     apply_status=0
 425                 fi
 426         fi
 427         if test $apply_status != 0
 428         then
 429                 echo Patch failed at $msgnum.
 430                 stop_here_user_resolve $this
 431         fi
 432
 433         if test -x "$GIT_DIR"/hooks/pre-applypatch
 434         then
 435                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 436         fi
 437
 438         tree=$(git-write-tree) &&
 439         echo Wrote tree $tree &&
 440         parent=$(git-rev-parse --verify HEAD) &&
 441         commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
 442         echo Committed: $commit &&
 443         git-update-ref HEAD $commit $parent ||
 444         stop_here $this
 445
 446         if test -x "$GIT_DIR"/hooks/post-applypatch
 447         then
 448                 "$GIT_DIR"/hooks/post-applypatch
 449         fi
 450
 451         go_next
 452 done
 453
 454 rm -fr "$dotest"