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 cancelling 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 dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws= resolvemsg=
  95
  96 while case "$#" in 0) break;; esac
  97 do
  98         case "$1" in
  99         -d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
 100         dotest=`expr "z$1" : 'z-[^=]*=\(.*\)'`; shift ;;
 101         -d|--d|--do|--dot|--dote|--dotes|--dotest)
 102         case "$#" in 1) usage ;; esac; shift
 103         dotest="$1"; shift;;
 104
 105         -i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
 106         --interacti|--interactiv|--interactive)
 107         interactive=t; shift ;;
 108
 109         -b|--b|--bi|--bin|--bina|--binar|--binary)
 110         binary=t; shift ;;
 111
 112         -3|--3|--3w|--3wa|--3way)
 113         threeway=t; shift ;;
 114         -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
 115         sign=t; shift ;;
 116         -u|--u|--ut|--utf|--utf8)
 117         utf8=t; shift ;;
 118         -k|--k|--ke|--kee|--keep)
 119         keep=t; shift ;;
 120
 121         -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
 122         resolved=t; shift ;;
 123
 124         --sk|--ski|--skip)
 125         skip=t; shift ;;
 126
 127         --whitespace=*)
 128         ws=$1; shift ;;
 129
 130         --resolvemsg=*)
 131         resolvemsg=$(echo "$1" | sed -e "s/^--resolvemsg=//"); shift ;;
 132
 133         --)
 134         shift; break ;;
 135         -*)
 136         usage ;;
 137         *)
 138         break ;;
 139         esac
 140 done
 141
 142 # If the dotest directory exists, but we have finished applying all the
 143 # patches in them, clear it out.
 144 if test -d "$dotest" &&
 145    last=$(cat "$dotest/last") &&
 146    next=$(cat "$dotest/next") &&
 147    test $# != 0 &&
 148    test "$next" -gt "$last"
 149 then
 150    rm -fr "$dotest"
 151 fi
 152
 153 if test -d "$dotest"
 154 then
 155         test ",$#," = ",0," ||
 156         die "previous dotest directory $dotest still exists but mbox given."
 157         resume=yes
 158 else
 159         # Make sure we are not given --skip nor --resolved
 160         test ",$skip,$resolved," = ,,, ||
 161                 die "Resolve operation not in progress, we are not resuming."
 162
 163         # Start afresh.
 164         mkdir -p "$dotest" || exit
 165
 166         git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 167                 rm -fr "$dotest"
 168                 exit 1
 169         }
 170
 171         # -b, -s, -u, -k and --whitespace flags are kept for the
 172         # resuming session after a patch failure.
 173         # -3 and -i can and must be given when resuming.
 174         echo "$binary" >"$dotest/binary"
 175         echo " $ws" >"$dotest/whitespace"
 176         echo "$sign" >"$dotest/sign"
 177         echo "$utf8" >"$dotest/utf8"
 178         echo "$keep" >"$dotest/keep"
 179         echo 1 >"$dotest/next"
 180 fi
 181
 182 case "$resolved" in
 183 '')
 184         files=$(git-diff-index --cached --name-only HEAD) || exit
 185         if [ "$files" ]; then
 186            echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 187            exit 1
 188         fi
 189 esac
 190
 191 if test "$(cat "$dotest/binary")" = t
 192 then
 193         binary=--allow-binary-replacement
 194 fi
 195 if test "$(cat "$dotest/utf8")" = t
 196 then
 197         utf8=-u
 198 fi
 199 if test "$(cat "$dotest/keep")" = t
 200 then
 201         keep=-k
 202 fi
 203 ws=`cat "$dotest/whitespace"`
 204 if test "$(cat "$dotest/sign")" = t
 205 then
 206         SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 207                         s/>.*/>/
 208                         s/^/Signed-off-by: /'
 209                 `
 210 else
 211         SIGNOFF=
 212 fi
 213
 214 last=`cat "$dotest/last"`
 215 this=`cat "$dotest/next"`
 216 if test "$skip" = t
 217 then
 218         this=`expr "$this" + 1`
 219         resume=
 220 fi
 221
 222 if test "$this" -gt "$last"
 223 then
 224         echo Nothing to do.
 225         rm -fr "$dotest"
 226         exit
 227 fi
 228
 229 while test "$this" -le "$last"
 230 do
 231         msgnum=`printf "%0${prec}d" $this`
 232         next=`expr "$this" + 1`
 233         test -f "$dotest/$msgnum" || {
 234                 resume=
 235                 go_next
 236                 continue
 237         }
 238
 239         # If we are not resuming, parse and extract the patch information
 240         # into separate files:
 241         #  - info records the authorship and title
 242         #  - msg is the rest of commit log message
 243         #  - patch is the patch body.
 244         #
 245         # When we are resuming, these files are either already prepared
 246         # by the user, or the user can tell us to do so by --resolved flag.
 247         case "$resume" in
 248         '')
 249                 git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 250                         <"$dotest/$msgnum" >"$dotest/info" ||
 251                         stop_here $this
 252                 git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
 253                 ;;
 254         esac
 255
 256         GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 257         GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 258         GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 259
 260         if test -z "$GIT_AUTHOR_EMAIL"
 261         then
 262                 echo "Patch does not have a valid e-mail address."
 263                 stop_here $this
 264         fi
 265
 266         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 267
 268         SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 269         case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 270
 271         case "$resume" in
 272         '')
 273             if test '' != "$SIGNOFF"
 274             then
 275                 LAST_SIGNED_OFF_BY=`
 276                     sed -ne '/^Signed-off-by: /p' \
 277                     "$dotest/msg-clean" |
 278                     tail -n 1
 279                 `
 280                 ADD_SIGNOFF=`
 281                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 282                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 283                     echo "$SIGNOFF"
 284                 }`
 285             else
 286                 ADD_SIGNOFF=
 287             fi
 288             {
 289                 echo "$SUBJECT"
 290                 if test -s "$dotest/msg-clean"
 291                 then
 292                         echo
 293                         cat "$dotest/msg-clean"
 294                 fi
 295                 if test '' != "$ADD_SIGNOFF"
 296                 then
 297                         echo "$ADD_SIGNOFF"
 298                 fi
 299             } >"$dotest/final-commit"
 300             ;;
 301         *)
 302                 case "$resolved$interactive" in
 303                 tt)
 304                         # This is used only for interactive view option.
 305                         git-diff-index -p --cached HEAD >"$dotest/patch"
 306                         ;;
 307                 esac
 308         esac
 309
 310         resume=
 311         if test "$interactive" = t
 312         then
 313             test -t 0 ||
 314             die "cannot be interactive without stdin connected to a terminal."
 315             action=again
 316             while test "$action" = again
 317             do
 318                 echo "Commit Body is:"
 319                 echo "--------------------------"
 320                 cat "$dotest/final-commit"
 321                 echo "--------------------------"
 322                 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 323                 read reply
 324                 case "$reply" in
 325                 [yY]*) action=yes ;;
 326                 [aA]*) action=yes interactive= ;;
 327                 [nN]*) action=skip ;;
 328                 [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
 329                        action=again ;;
 330                 [vV]*) action=again
 331                        LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 332                 *)     action=again ;;
 333                 esac
 334             done
 335         else
 336             action=yes
 337         fi
 338
 339         if test $action = skip
 340         then
 341                 go_next
 342                 continue
 343         fi
 344
 345         if test -x "$GIT_DIR"/hooks/applypatch-msg
 346         then
 347                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 348                 stop_here $this
 349         fi
 350
 351         echo
 352         echo "Applying '$SUBJECT'"
 353         echo
 354
 355         case "$resolved" in
 356         '')
 357                 git-apply $binary --index $ws "$dotest/patch"
 358                 apply_status=$?
 359                 ;;
 360         t)
 361                 # Resolved means the user did all the hard work, and
 362                 # we do not have to do any patch application.  Just
 363                 # trust what the user has in the index file and the
 364                 # working tree.
 365                 resolved=
 366                 changed="$(git-diff-index --cached --name-only HEAD)"
 367                 if test '' = "$changed"
 368                 then
 369                         echo "No changes - did you forget update-index?"
 370                         stop_here_user_resolve $this
 371                 fi
 372                 unmerged=$(git-ls-files -u)
 373                 if test -n "$unmerged"
 374                 then
 375                         echo "You still have unmerged paths in your index"
 376                         echo "did you forget update-index?"
 377                         stop_here_user_resolve $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_user_resolve $this
 404         fi
 405
 406         if test -x "$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 -m "am: $SUBJECT" 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"