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 "$dotest"
 158 then
 159         test ",$#," = ",0," ||
 160         die "previous dotest directory $dotest still exists but mbox given."
 161         resume=yes
 162 else
 163         # Make sure we are not given --skip nor --resolved
 164         test ",$skip,$resolved," = ,,, ||
 165                 die "Resolve operation not in progress, we are not resuming."
 166
 167         # Start afresh.
 168         mkdir -p "$dotest" || exit
 169
 170         git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
 171                 rm -fr "$dotest"
 172                 exit 1
 173         }
 174
 175         # -b, -s, -u, -k and --whitespace flags are kept for the
 176         # resuming session after a patch failure.
 177         # -3 and -i can and must be given when resuming.
 178         echo "$binary" >"$dotest/binary"
 179         echo " $ws" >"$dotest/whitespace"
 180         echo "$sign" >"$dotest/sign"
 181         echo "$utf8" >"$dotest/utf8"
 182         echo "$keep" >"$dotest/keep"
 183         echo 1 >"$dotest/next"
 184 fi
 185
 186 case "$resolved" in
 187 '')
 188         files=$(git-diff-index --cached --name-only HEAD) || exit
 189         if [ "$files" ]; then
 190            echo "Dirty index: cannot apply patches (dirty: $files)" >&2
 191            exit 1
 192         fi
 193 esac
 194
 195 if test "$(cat "$dotest/binary")" = t
 196 then
 197         binary=--allow-binary-replacement
 198 fi
 199 if test "$(cat "$dotest/utf8")" = t
 200 then
 201         utf8=-u
 202 fi
 203 if test "$(cat "$dotest/keep")" = t
 204 then
 205         keep=-k
 206 fi
 207 ws=`cat "$dotest/whitespace"`
 208 if test "$(cat "$dotest/sign")" = t
 209 then
 210         SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
 211                         s/>.*/>/
 212                         s/^/Signed-off-by: /'
 213                 `
 214 else
 215         SIGNOFF=
 216 fi
 217
 218 last=`cat "$dotest/last"`
 219 this=`cat "$dotest/next"`
 220 if test "$skip" = t
 221 then
 222         this=`expr "$this" + 1`
 223         resume=
 224 fi
 225
 226 if test "$this" -gt "$last"
 227 then
 228         echo Nothing to do.
 229         rm -fr "$dotest"
 230         exit
 231 fi
 232
 233 while test "$this" -le "$last"
 234 do
 235         msgnum=`printf "%0${prec}d" $this`
 236         next=`expr "$this" + 1`
 237         test -f "$dotest/$msgnum" || {
 238                 resume=
 239                 go_next
 240                 continue
 241         }
 242
 243         # If we are not resuming, parse and extract the patch information
 244         # into separate files:
 245         #  - info records the authorship and title
 246         #  - msg is the rest of commit log message
 247         #  - patch is the patch body.
 248         #
 249         # When we are resuming, these files are either already prepared
 250         # by the user, or the user can tell us to do so by --resolved flag.
 251         case "$resume" in
 252         '')
 253                 git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
 254                         <"$dotest/$msgnum" >"$dotest/info" ||
 255                         stop_here $this
 256                 git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
 257                 ;;
 258         esac
 259
 260         GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 261         GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 262         GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 263
 264         if test -z "$GIT_AUTHOR_EMAIL"
 265         then
 266                 echo "Patch does not have a valid e-mail address."
 267                 stop_here $this
 268         fi
 269
 270         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 271
 272         SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
 273         case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
 274
 275         case "$resume" in
 276         '')
 277             if test '' != "$SIGNOFF"
 278             then
 279                 LAST_SIGNED_OFF_BY=`
 280                     sed -ne '/^Signed-off-by: /p' \
 281                     "$dotest/msg-clean" |
 282                     tail -n 1
 283                 `
 284                 ADD_SIGNOFF=`
 285                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 286                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 287                     echo "$SIGNOFF"
 288                 }`
 289             else
 290                 ADD_SIGNOFF=
 291             fi
 292             {
 293                 echo "$SUBJECT"
 294                 if test -s "$dotest/msg-clean"
 295                 then
 296                         echo
 297                         cat "$dotest/msg-clean"
 298                 fi
 299                 if test '' != "$ADD_SIGNOFF"
 300                 then
 301                         echo "$ADD_SIGNOFF"
 302                 fi
 303             } >"$dotest/final-commit"
 304             ;;
 305         *)
 306                 case "$resolved$interactive" in
 307                 tt)
 308                         # This is used only for interactive view option.
 309                         git-diff-index -p --cached HEAD >"$dotest/patch"
 310                         ;;
 311                 esac
 312         esac
 313
 314         resume=
 315         if test "$interactive" = t
 316         then
 317             test -t 0 ||
 318             die "cannot be interactive without stdin connected to a terminal."
 319             action=again
 320             while test "$action" = again
 321             do
 322                 echo "Commit Body is:"
 323                 echo "--------------------------"
 324                 cat "$dotest/final-commit"
 325                 echo "--------------------------"
 326                 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 327                 read reply
 328                 case "$reply" in
 329                 [yY]*) action=yes ;;
 330                 [aA]*) action=yes interactive= ;;
 331                 [nN]*) action=skip ;;
 332                 [eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
 333                        action=again ;;
 334                 [vV]*) action=again
 335                        LESS=-S ${PAGER:-less} "$dotest/patch" ;;
 336                 *)     action=again ;;
 337                 esac
 338             done
 339         else
 340             action=yes
 341         fi
 342
 343         if test $action = skip
 344         then
 345                 go_next
 346                 continue
 347         fi
 348
 349         if test -x "$GIT_DIR"/hooks/applypatch-msg
 350         then
 351                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 352                 stop_here $this
 353         fi
 354
 355         echo
 356         echo "Applying '$SUBJECT'"
 357         echo
 358
 359         case "$resolved" in
 360         '')
 361                 git-apply $binary --index $ws "$dotest/patch"
 362                 apply_status=$?
 363                 ;;
 364         t)
 365                 # Resolved means the user did all the hard work, and
 366                 # we do not have to do any patch application.  Just
 367                 # trust what the user has in the index file and the
 368                 # working tree.
 369                 resolved=
 370                 changed="$(git-diff-index --cached --name-only HEAD)"
 371                 if test '' = "$changed"
 372                 then
 373                         echo "No changes - did you forget update-index?"
 374                         stop_here_user_resolve $this
 375                 fi
 376                 unmerged=$(git-ls-files -u)
 377                 if test -n "$unmerged"
 378                 then
 379                         echo "You still have unmerged paths in your index"
 380                         echo "did you forget update-index?"
 381                         stop_here_user_resolve $this
 382                 fi
 383                 apply_status=0
 384                 ;;
 385         esac
 386
 387         if test $apply_status = 1 && test "$threeway" = t
 388         then
 389                 if (fall_back_3way)
 390                 then
 391                     # Applying the patch to an earlier tree and merging the
 392                     # result may have produced the same tree as ours.
 393                     changed="$(git-diff-index --cached --name-only HEAD)"
 394                     if test '' = "$changed"
 395                     then
 396                             echo No changes -- Patch already applied.
 397                             go_next
 398                             continue
 399                     fi
 400                     # clear apply_status -- we have successfully merged.
 401                     apply_status=0
 402                 fi
 403         fi
 404         if test $apply_status != 0
 405         then
 406                 echo Patch failed at $msgnum.
 407                 stop_here_user_resolve $this
 408         fi
 409
 410         if test -x "$GIT_DIR"/hooks/pre-applypatch
 411         then
 412                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 413         fi
 414
 415         tree=$(git-write-tree) &&
 416         echo Wrote tree $tree &&
 417         parent=$(git-rev-parse --verify HEAD) &&
 418         commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
 419         echo Committed: $commit &&
 420         git-update-ref -m "$rloga: $SUBJECT" HEAD $commit $parent ||
 421         stop_here $this
 422
 423         if test -x "$GIT_DIR"/hooks/post-applypatch
 424         then
 425                 "$GIT_DIR"/hooks/post-applypatch
 426         fi
 427
 428         go_next
 429 done
 430
 431 rm -fr "$dotest"