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 set_reflog_action am
  10
  11 git var GIT_COMMITTER_IDENT >/dev/null || exit
  12
  13 stop_here () {
  14     echo "$1" >"$dotest/next"
  15     exit 1
  16 }
  17
  18 stop_here_user_resolve () {
  19     if [ -n "$resolvemsg" ]; then
  20             echo "$resolvemsg"
  21             stop_here $1
  22     fi
  23     cmdline=$(basename $0)
  24     if test '' != "$interactive"
  25     then
  26         cmdline="$cmdline -i"
  27     fi
  28     if test '' != "$threeway"
  29     then
  30         cmdline="$cmdline -3"
  31     fi
  32     if test '.dotest' != "$dotest"
  33     then
  34         cmdline="$cmdline -d=$dotest"
  35     fi
  36     echo "When you have resolved this problem run \"$cmdline --resolved\"."
  37     echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
  38
  39     stop_here $1
  40 }
  41
  42 go_next () {
  43         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
  44                 "$dotest/patch" "$dotest/info"
  45         echo "$next" >"$dotest/next"
  46         this=$next
  47 }
  48
  49 cannot_fallback () {
  50         echo "$1"
  51         echo "Cannot fall back to three-way merge."
  52         exit 1
  53 }
  54
  55 fall_back_3way () {
  56     O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
  57
  58     rm -fr "$dotest"/patch-merge-*
  59     mkdir "$dotest/patch-merge-tmp-dir"
  60
  61     # First see if the patch records the index info that we can use.
  62     git-apply -z --index-info "$dotest/patch" \
  63         >"$dotest/patch-merge-index-info" &&
  64     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  65     git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
  66     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  67     git-write-tree >"$dotest/patch-merge-base+" ||
  68     cannot_fallback "Patch does not record usable index information."
  69
  70     echo Using index info to reconstruct a base tree...
  71     if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
  72         git-apply $binary --cached <"$dotest/patch"
  73     then
  74         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
  75         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
  76     else
  77         cannot_fallback "Did you hand edit your patch?
  78 It does not apply to blobs recorded in its index."
  79     fi
  80
  81     test -f "$dotest/patch-merge-index" &&
  82     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git-write-tree) &&
  83     orig_tree=$(cat "$dotest/patch-merge-base") &&
  84     rm -fr "$dotest"/patch-merge-* || exit 1
  85
  86     echo Falling back to patching base and 3-way merge...
  87
  88     # This is not so wrong.  Depending on which base we picked,
  89     # orig_tree may be wildly different from ours, but his_tree
  90     # has the same set of wildly different changes in parts the
  91     # patch did not touch, so resolve ends up canceling them,
  92     # saying that we reverted all those changes.
  93
  94     git-merge-resolve $orig_tree -- HEAD $his_tree || {
  95             if test -d "$GIT_DIR/rr-cache"
  96             then
  97                 git-rerere
  98             fi
  99             echo Failed to merge in the changes.
 100             exit 1
 101     }
 102 }
 103
 104 prec=4
 105 dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws= resolvemsg=
 106
 107 while case "$#" in 0) break;; esac
 108 do
 109         case "$1" in
 110         -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
 111         dotest=`expr "z$1" : 'z-[^=]*=\(.*\)'`; shift ;;
 112         -d|--d|--do|--dot|--dote|--dotes|--dotest)
 113         case "$#" in 1) usage ;; esac; shift
 114         dotest="$1"; shift;;
 115
 116         -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
 117         --interacti|--interactiv|--interactive)
 118         interactive=t; shift ;;
 119
 120         -b|--b|--bi|--bin|--bina|--binar|--binary)
 121         binary=t; shift ;;
 122
 123         -3|--3|--3w|--3wa|--3way)
 124         threeway=t; shift ;;
 125         -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
 126         sign=t; shift ;;
 127         -u|--u|--ut|--utf|--utf8)
 128         utf8=t; shift ;;
 129         -k|--k|--ke|--kee|--keep)
 130         keep=t; shift ;;
 131
 132         -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
 133         resolved=t; shift ;;
 134
 135         --sk|--ski|--skip)
 136         skip=t; shift ;;
 137
 138         --whitespace=*)
 139         ws=$1; shift ;;
 140
 141         --resolvemsg=*)
 142         resolvemsg=$(echo "$1" | sed -e "s/^--resolvemsg=//"); shift ;;
 143
 144         --)
 145         shift; break ;;
 146         -*)
 147         usage ;;
 148         *)
 149         break ;;
 150         esac
 151 done
 152
 153 # If the dotest directory exists, but we have finished applying all the
 154 # patches in them, clear it out.
 155 if test -d "$dotest" &&
 156    last=$(cat "$dotest/last") &&
 157    next=$(cat "$dotest/next") &&
 158    test $# != 0 &&
 159    test "$next" -gt "$last"
 160 then
 161    rm -fr "$dotest"
 162 fi
 163
 164 if test -d "$dotest"
 165 then
 166         case "$#,$skip$resolved" in
 167         0,*t*)
 168                 # Explicit resume command and we do not have file, so
 169                 # we are happy.
 170                 : ;;
 171         0,)
 172                 # No file input but without resume parameters; catch
 173                 # user error to feed us a patch from standard input
 174                 # when there is already .dotest.  This is somewhat
 175                 # unreliable -- stdin could be /dev/null for example
 176                 # and the caller did not intend to feed us a patch but
 177                 # wanted to continue unattended.
 178                 tty -s
 179                 ;;
 180         *)
 181                 false
 182                 ;;
 183         esac ||
 184         die "previous dotest directory $dotest still exists but mbox given."
 185         resume=yes
 186 else
 187         # Make sure we are not given --skip nor --resolved
 188         test ",$skip,$resolved," = ,,, ||
 189                 die "Resolve operation not in progress, we are not resuming."
 190
 191         # Start afresh.
 192         mkdir -p "$dotest" || exit
 193
 194         git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 195                 rm -fr "$dotest"
 196                 exit 1
 197         }
 198
 199         # -b, -s, -u, -k and --whitespace flags are kept for the
 200         # resuming session after a patch failure.
 201         # -3 and -i can and must be given when resuming.
 202         echo "$binary" >"$dotest/binary"
 203         echo " $ws" >"$dotest/whitespace"
 204         echo "$sign" >"$dotest/sign"
 205         echo "$utf8" >"$dotest/utf8"
 206         echo "$keep" >"$dotest/keep"
 207         echo 1 >"$dotest/next"
 208 fi
 209
 210 case "$resolved" in
 211 '')
 212         files=$(git-diff-index --cached --name-only HEAD) || exit
 213         if [ "$files" ]; then
 214            echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 215            exit 1
 216         fi
 217 esac
 218
 219 if test "$(cat "$dotest/binary")" = t
 220 then
 221         binary=--allow-binary-replacement
 222 fi
 223 if test "$(cat "$dotest/utf8")" = t
 224 then
 225         utf8=-u
 226 fi
 227 if test "$(cat "$dotest/keep")" = t
 228 then
 229         keep=-k
 230 fi
 231 ws=`cat "$dotest/whitespace"`
 232 if test "$(cat "$dotest/sign")" = t
 233 then
 234         SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 235                         s/>.*/>/
 236                         s/^/Signed-off-by: /'
 237                 `
 238 else
 239         SIGNOFF=
 240 fi
 241
 242 last=`cat "$dotest/last"`
 243 this=`cat "$dotest/next"`
 244 if test "$skip" = t
 245 then
 246         if test -d "$GIT_DIR/rr-cache"
 247         then
 248                 git-rerere clear
 249         fi
 250         this=`expr "$this" + 1`
 251         resume=
 252 fi
 253
 254 if test "$this" -gt "$last"
 255 then
 256         echo Nothing to do.
 257         rm -fr "$dotest"
 258         exit
 259 fi
 260
 261 while test "$this" -le "$last"
 262 do
 263         msgnum=`printf "%0${prec}d" $this`
 264         next=`expr "$this" + 1`
 265         test -f "$dotest/$msgnum" || {
 266                 resume=
 267                 go_next
 268                 continue
 269         }
 270
 271         # If we are not resuming, parse and extract the patch information
 272         # into separate files:
 273         #  - info records the authorship and title
 274         #  - msg is the rest of commit log message
 275         #  - patch is the patch body.
 276         #
 277         # When we are resuming, these files are either already prepared
 278         # by the user, or the user can tell us to do so by --resolved flag.
 279         case "$resume" in
 280         '')
 281                 git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 282                         <"$dotest/$msgnum" >"$dotest/info" ||
 283                         stop_here $this
 284                 git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
 285                 ;;
 286         esac
 287
 288         GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 289         GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 290         GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 291
 292         if test -z "$GIT_AUTHOR_EMAIL"
 293         then
 294                 echo "Patch does not have a valid e-mail address."
 295                 stop_here $this
 296         fi
 297
 298         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 299
 300         SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 301         case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 302
 303         case "$resume" in
 304         '')
 305             if test '' != "$SIGNOFF"
 306             then
 307                 LAST_SIGNED_OFF_BY=`
 308                     sed -ne '/^Signed-off-by: /p' \
 309                     "$dotest/msg-clean" |
 310                     tail -n 1
 311                 `
 312                 ADD_SIGNOFF=`
 313                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 314                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 315                     echo "$SIGNOFF"
 316                 }`
 317             else
 318                 ADD_SIGNOFF=
 319             fi
 320             {
 321                 echo "$SUBJECT"
 322                 if test -s "$dotest/msg-clean"
 323                 then
 324                         echo
 325                         cat "$dotest/msg-clean"
 326                 fi
 327                 if test '' != "$ADD_SIGNOFF"
 328                 then
 329                         echo "$ADD_SIGNOFF"
 330                 fi
 331             } >"$dotest/final-commit"
 332             ;;
 333         *)
 334                 case "$resolved$interactive" in
 335                 tt)
 336                         # This is used only for interactive view option.
 337                         git-diff-index -p --cached HEAD >"$dotest/patch"
 338                         ;;
 339                 esac
 340         esac
 341
 342         resume=
 343         if test "$interactive" = t
 344         then
 345             test -t 0 ||
 346             die "cannot be interactive without stdin connected to a terminal."
 347             action=again
 348             while test "$action" = again
 349             do
 350                 echo "Commit Body is:"
 351                 echo "--------------------------"
 352                 cat "$dotest/final-commit"
 353                 echo "--------------------------"
 354                 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 355                 read reply
 356                 case "$reply" in
 357                 [yY]*) action=yes ;;
 358                 [aA]*) action=yes interactive= ;;
 359                 [nN]*) action=skip ;;
 360                 [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
 361                        action=again ;;
 362                 [vV]*) action=again
 363                        LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 364                 *)     action=again ;;
 365                 esac
 366             done
 367         else
 368             action=yes
 369         fi
 370
 371         if test $action = skip
 372         then
 373                 go_next
 374                 continue
 375         fi
 376
 377         if test -x "$GIT_DIR"/hooks/applypatch-msg
 378         then
 379                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 380                 stop_here $this
 381         fi
 382
 383         echo
 384         echo "Applying '$SUBJECT'"
 385         echo
 386
 387         case "$resolved" in
 388         '')
 389                 git-apply $binary --index $ws "$dotest/patch"
 390                 apply_status=$?
 391                 ;;
 392         t)
 393                 # Resolved means the user did all the hard work, and
 394                 # we do not have to do any patch application.  Just
 395                 # trust what the user has in the index file and the
 396                 # working tree.
 397                 resolved=
 398                 changed="$(git-diff-index --cached --name-only HEAD)"
 399                 if test '' = "$changed"
 400                 then
 401                         echo "No changes - did you forget to use 'git add'?"
 402                         stop_here_user_resolve $this
 403                 fi
 404                 unmerged=$(git-ls-files -u)
 405                 if test -n "$unmerged"
 406                 then
 407                         echo "You still have unmerged paths in your index"
 408                         echo "did you forget to use 'git add'?"
 409                         stop_here_user_resolve $this
 410                 fi
 411                 apply_status=0
 412                 if test -d "$GIT_DIR/rr-cache"
 413                 then
 414                         git rerere
 415                 fi
 416                 ;;
 417         esac
 418
 419         if test $apply_status = 1 && test "$threeway" = t
 420         then
 421                 if (fall_back_3way)
 422                 then
 423                     # Applying the patch to an earlier tree and merging the
 424                     # result may have produced the same tree as ours.
 425                     changed="$(git-diff-index --cached --name-only HEAD)"
 426                     if test '' = "$changed"
 427                     then
 428                             echo No changes -- Patch already applied.
 429                             go_next
 430                             continue
 431                     fi
 432                     # clear apply_status -- we have successfully merged.
 433                     apply_status=0
 434                 fi
 435         fi
 436         if test $apply_status != 0
 437         then
 438                 echo Patch failed at $msgnum.
 439                 stop_here_user_resolve $this
 440         fi
 441
 442         if test -x "$GIT_DIR"/hooks/pre-applypatch
 443         then
 444                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 445         fi
 446
 447         tree=$(git-write-tree) &&
 448         echo Wrote tree $tree &&
 449         parent=$(git-rev-parse --verify HEAD) &&
 450         commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
 451         echo Committed: $commit &&
 452         git-update-ref -m "$GIT_REFLOG_ACTION: $SUBJECT" HEAD $commit $parent ||
 453         stop_here $this
 454
 455         if test -x "$GIT_DIR"/hooks/post-applypatch
 456         then
 457                 "$GIT_DIR"/hooks/post-applypatch
 458         fi
 459
 460         go_next
 461 done
 462
 463 rm -fr "$dotest"