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