p

   1 #!/bin/bash
   2
   3 # patch management
   4 #
   5 # Copyright (C) 2003 Neil Brown <neilb@cse.unsw.edu.au>
   6 #
   7 #
   8 #    This program is free software; you can redistribute it and/or modify
   9 #    it under the terms of the GNU General Public License as published by
  10 #    the Free Software Foundation; either version 2 of the License, or
  11 #    (at your option) any later version.
  12 #
  13 #    This program is distributed in the hope that it will be useful,
  14 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #    GNU General Public License for more details.
  17 #
  18 #    You should have received a copy of the GNU General Public License
  19 #    along with this program; if not, write to the Free Software
  20 #    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21 #
  22 #    Author: Neil Brown
  23 #    Email: <neilb@cse.unsw.edu.au>
  24 #    Paper: Neil Brown
  25 #           School of Computer Science and Engineering
  26 #           The University of New South Wales
  27 #           Sydney, 2052
  28 #           Australia
  29
  30
  31 # metadata is in .patches
  32 # there is:
  33 #   files:  list of all files checked out
  34 #   name:   name of current patch
  35 #   status: status of current patch
  36 #   notes:  notes on current patch
  37 #   applied/  patches applied nnn-name
  38 #   removed/  patches removed nnn-name
  39 #   included/ patches that have been included upstream
  40 #   patch:  a recent copy of the 'current' patch
  41 #   get-version: a script which will report the version number of the base dist
  42 #   dest/   symlink to directory to publish snapshots to
  43 #   mail/   composed mail messages ready for sending
  44 #   maintainer  who to email patches to (Linus etc)
  45 #   cc        who to CC patches to: prefix address
  46 #
  47 # the nnn in names in applied and removed are sequence numbers
  48 # whenever we add a file we choose one more than the highest used number
  49 # patch files contain then name implicitly and start with
  50 #   Status: status
  51 # then a blank line, normally a one line description, another blank, and more detail.
  52 #
  53
  54 #
  55 # Todo - auto bk pull:
  56 #    bk pull
  57 #    bk export -t patch -r DEVEL, > /tmp/apatch
  58 #    bk tag DEVEL
  59 #    while p open last && p discard ; do : ; done
  60 #    p clean
  61 #    patch -p1 -f < /tmp/apatch
  62
  63 find_home()
  64 {
  65         # walk up directory tree until a .patches directory
  66         # is found.
  67         # set OrigDir to name of where we were .. not dots.
  68         OrigDir=
  69         dir=`pwd`
  70         while [ ! -d .patches -a " $dir"  != " /" ]
  71         do
  72                 base=${dir##*/}
  73                 base=${base#/}
  74                 dir=${dir%/*}
  75                 case $dir in
  76                         "" ) dir=/
  77                 esac
  78                 OrigDir=$base/$OrigDir
  79                 cd ..
  80         done
  81         test -d .patches
  82 }
  83
  84 get_meta()
  85 {
  86         name=`cat .patches/name 2> /dev/null`
  87         status=`cat .patches/status 2> /dev/null`
  88 }
  89
  90 forget_one()
  91 {
  92         if true # || cmp -s "$1" "$1~current~" && cmp -s "$1" "$1~orig~"
  93         then
  94             rm -f "$1~current~" "$1~orig~"
  95             chmod -w "$1"
  96         else
  97             echo >&2 "ERROR $1 doesn't match original"
  98         fi
  99 }
 100
 101
 102 snap_one()
 103 {
 104     cp "$1" "$1~snapshot~"
 105 }
 106
 107 snap_diff()
 108 {
 109     diff -u "$1" "$1~snapshot~"
 110 }
 111 snap_back()
 112 {
 113     cp "$1~snapshot~" "$1"
 114 }
 115
 116 check_out()
 117 {
 118         file=$1
 119         file=${file#./}
 120         [ -f $file ] || >> $file
 121         if [ -f $file ]
 122             then
 123             if [ ! -f "$file~orig~" ] ; then
 124                 mv "$file" "$file~orig~"
 125                 cp "$file~orig~" "$file"
 126                 echo $file >> .patches/files
 127                 sort -o .patches/files .patches/files
 128                 chmod u+w "$file"
 129             fi
 130             if [ ! -f "$file~current~" ] ; then
 131                 mv "$file" "$file~current~"
 132                 cp "$file~current~" "$file"
 133             fi
 134         else
 135             echo >&2 Cannot checkout $file
 136         fi
 137 }
 138
 139 all_files()
 140 {
 141         >> .patches/files
 142         while read file
 143         do eval $1 $file $2
 144         done < .patches/files
 145 }
 146
 147 diff_one()
 148 {
 149         if cmp -s "$1~current~" "$1" || [ ! -f "$1" -a ! -f "$1~current~" ]
 150         then :
 151         else
 152                 echo
 153                 echo "diff ./$1~current~ ./$1"
 154                 if [ " $2" = " -R" ]
 155                 then
 156                   diff -N --show-c-function -u ./$1 ./$1~current~
 157                 else
 158                   diff -N --show-c-function -u ./$1~current~ ./$1
 159                 fi
 160         fi
 161 }
 162
 163 diff_one_orig()
 164 {
 165         if cmp -s "$1~orig~" "$1"
 166         then :
 167         else
 168                 echo
 169                 echo "diff ./$1~orig~ ./$1"
 170                 diff --show-c-function -u ./$1~orig~ ./$1
 171         fi
 172 }
 173
 174 commit_one()
 175 {
 176     rm -f "$1~current~"
 177     if [  -f "$1" ] ; then
 178         mv "$1" "$1~current~"
 179         cp -p "$1~current~" $1
 180         chmod u+w $1
 181     fi
 182 }
 183
 184 discard_one()
 185 {
 186         cmp -s "$1~current~" $1 || { rm -f "$1" ; cp "$1~current~" $1; }
 187         chmod u+w $1
 188 }
 189
 190 swap_one()
 191 {
 192         mv "$1" "$1.tmp"
 193         mv "$1~current~" "$1"
 194         mv "$1.tmp" "$1~current~"
 195 }
 196
 197 CERT='Signed-off-by: Neil Brown <neilb@suse.de>'
 198 make_diff()
 199 {
 200    {
 201         [ -s .patches/status ] && echo "Status: `cat .patches/status`"
 202         [ -s .patches/notes ] && { echo; cat .patches/notes ; }
 203         if grep -F "$CERT" .patches/notes > /dev/null 2>&1
 204         then :
 205         else echo "$CERT"
 206         fi
 207         echo
 208         all_files diff_one $1 > .patches/tmp
 209         echo "### Diffstat output"
 210         diffstat -p0 2> /dev/null < .patches/tmp
 211         cat .patches/tmp
 212         [ -s .patches/tmp ] || rm .patches/patch
 213         rm .patches/tmp
 214    } > .patches/patch
 215 }
 216
 217 save_patch()
 218 {
 219         dir=.patches/$1
 220         name=$2
 221         # move .patches/patch to $dir/nnn$name
 222         #for some new nnn
 223         [ -d $dir ] || mkdir $dir || exit 1
 224         largest=`ls $dir | sed -n -e 's/^\([0-9][0-9][0-9]\).*/\1/p' | sort -n | tail -1`
 225         if [ "0$largest" -eq 999 ]
 226         then echo >&2 'ARRG - too many patches!' ; exit 1
 227         fi
 228         new=`expr "0$largest" + 1001`
 229         new=${new#1}
 230         mv .patches/patch $dir/$new$name
 231 }
 232
 233 find_prefix()
 234 {
 235         # set "prefix" to number for -pn by looking at first file in given patch.
 236         n=${2-1}
 237         file=`lsdiff $1 | head -$n | tail -1`
 238         orig=$file
 239         prefix=0
 240         while [ \( -n "$file" -a ! -f "$file" \) -o " $file" != " ${file#/}" ]
 241         do
 242             file=`expr "$file" : '[^/]*/\(.*\)'`
 243             prefix=`expr $prefix + 1`
 244         done
 245         if [ -z "$file" ]
 246         then echo "Cannot find $orig" >&2
 247            if [ $n -gt 4 ]
 248            then exit 2;
 249            else find_prefix "$1" $[n+1]
 250            fi
 251         fi
 252         if [ " $orig" != " $file" ]
 253         then
 254             echo "Found $orig as $file - prefix $prefix"
 255         fi
 256 }
 257
 258 extract_notes()
 259 {
 260  # remove first line, Status: line, leading blanks,
 261  # everything from ' *---' and trailing blanks
 262  awk '
 263     BEGIN { head= 1; blanks=0 ; }
 264     head == 1 && ( $1 == "Status:" || $0 == "" ) {
 265             next;
 266     }
 267     { head = 0; }
 268     $0 == "" { blanks++; next; }
 269     $0 ~ /^ *---/ { exit }
 270     $0 ~ /^###/ { exit }
 271     {   while (blanks > 0) {
 272            blanks--; print "";
 273         }
 274         print $0;
 275     }
 276   ' $1
 277 }
 278
 279
 280 if [ $# -eq 0 ]
 281 then
 282   echo >&2 'Usage: p [help|co|make|discard|commit|status|name|...] args'
 283   exit 1
 284 fi
 285 cmd=$1
 286 shift
 287
 288 if [ " $cmd" = " help" ] || find_home
 289 then :
 290 else echo >&2 "p $cmd: cannot find .patches directory"
 291      exit 1
 292 fi
 293
 294 case $cmd in
 295    co )
 296         if [ $# -ne 1 ] ; then
 297                 echo >&2 Usage: p co file; exit 1
 298         fi
 299         file=$1
 300         if [ ! -f "$OrigDir$file" ]
 301         then
 302                 echo >&2 "p co: file $file not found"; exit 1;
 303         fi
 304         check_out "$OrigDir$file"
 305
 306         ;;
 307   make | view )
 308         case $1 in
 309             "" )
 310                 make_diff
 311                 if [ -s .patches/patch ] ; then
 312                     pfile=.patches/patch
 313                 else
 314                     echo >&2 "No current patch" ; exit 1;
 315                 fi
 316                 ;;
 317
 318             */* ) pfile=$1;;
 319             * ) pfile=`echo .patches/[ra][ep][mp]*/*$1*`
 320         esac
 321         if [ ! -f "$pfile" ]
 322         then echo >&2 "Cannot find unique patch '$1' - found: $pfile"; exit 1;
 323         fi
 324         if grep -s '^+.*[       ]$' $pfile > /dev/null
 325         then
 326             ${PAGER-less -p '^\+.*[     ]$'} $pfile
 327         else
 328             ${PAGER-less} $pfile
 329         fi
 330         ;;
 331
 332   all )
 333         all_files diff_one_orig
 334         ;;
 335   status | name )
 336         case $# in
 337          1 )
 338                 get_meta
 339                 if [ $cmd = name ] ; then
 340                   if [ -n "$name" ]; then
 341                         echo "changing name from '$name' to '$1'"
 342                   else
 343                         echo "Setting name to '$1'"
 344                   fi
 345                   echo "$1" > .patches/name
 346                 fi
 347                 if [ $cmd = status ] ; then
 348                   if [ -n "$status" ]; then
 349                         echo "changing status from '$status' to '$1'"
 350                   else
 351                         echo "Setting status to '$1'"
 352                   fi
 353                   echo "$1" > .patches/status
 354                 fi
 355                 ;;
 356           0 )
 357                 get_meta
 358                 echo -n "Name ($name)? " ; read name
 359                 echo -n "Status ($status)?  " ; read status
 360                 [ -n "$name" ] && { echo $name > .patches/name ; }
 361                 [ -n "$status" ] && { echo $status > .patches/status ; }
 362                 ;;
 363           * )
 364                 echo "Usage: p $cmd [new-$cmd]"; exit 1;
 365         esac
 366         ;;
 367   note* )
 368         >> .patches/notes
 369         ${EDITOR:-vi} .patches/notes
 370         ;;
 371   discard|commit )
 372         make_diff
 373         if [ -s .patches/patch ]
 374         then :
 375         else echo >&2 No patch to $cmd ; exit 1
 376         fi
 377         if grep -s '^+.*[       ]$' .patches/patch > /dev/null
 378         then
 379             echo >&2 remove trailing spaces/tabs first !!
 380 #           exit 1
 381         fi
 382         if [ -s .patches/to-resolv ]
 383         then echo "Please resolve outstanding conflicts first with 'p resolve'"
 384             exit 1
 385         fi
 386         get_meta
 387         if [ -z "$name" ] ; then
 388                 echo -n "Name? " ; read name
 389                 if [ -z "$name" ] ; then
 390                    echo >&2 "No current name, please set with 'p name'"
 391                    exit 1;
 392                 fi
 393                 echo $name > .patches/name
 394         fi
 395         if [ -z "$status" ] ; then
 396                 echo -n "Status? " ; read status
 397                 if [ -z "$status" ] ; then
 398                     echo >&2 "No current status, please set with 'p status'"
 399                     exit 1;
 400                 fi
 401                 echo $status > .patches/status
 402         fi
 403         if [ -s .patches/notes ]
 404         then :
 405         else
 406             { echo "Title...."
 407               echo
 408               echo "Description..."
 409               echo
 410               echo "====Do Not Remove===="
 411               cat .patches/patch
 412             } > .patches/notes
 413             ${EDITOR-vi} .patches/notes
 414             mv .patches/notes .patches/tmp
 415             sed '/^====Do Not Remove====/,$d' .patches/tmp > .patches/notes
 416             rm .patches/tmp
 417         fi
 418         make_diff
 419
 420         if [ $cmd = commit ] ; then
 421            save_patch applied "$name"
 422            echo Saved as $new$name
 423            all_files commit_one
 424         else
 425            save_patch removed "$name"
 426            echo Saved as $new$name
 427            all_files discard_one
 428         fi
 429         rm -f .patches/name .patches/status .patches/notes
 430         ;;
 431
 432   purge )
 433         make_diff
 434         mv .patches/patch .patches/last-purge
 435         all_files discard_one
 436         rm -f .patches/name .patches/status .patches/notes
 437         ;;
 438   open )
 439         make_diff
 440         get_meta
 441         if [ -s .patches/patch ]
 442         then
 443                 echo >&2 Patch $name already open - please commit; exit 1;
 444         fi
 445         if [ $# -eq 0 ]
 446         then
 447                 echo "Available patches are:"
 448                 ls .patches/applied
 449                 exit 0
 450         fi
 451         if [ $# -ne 1 ]
 452         then echo >&2 "Usage: p open patchname" ; exit 1
 453         fi
 454         if [ " $1" = " last" ]
 455         then
 456             pfile=`ls -d .patches/applied/[0-9]* | tail -1`
 457         else
 458             pfile=`echo .patches/applied/*$1*`
 459         fi
 460         if [ ! -f "$pfile" ]
 461         then echo >&2 "Cannot find unique patch '$1' - found: $pfile"; exit 1
 462         fi
 463         # lets see if it applies cleanly
 464         if patch -s --fuzz=0 --dry-run -R -f -p0 < "$pfile"
 465         then echo Ok, it seems to apply
 466         else echo >&2 "Sorry, that patch doesn't apply" ; exit 1
 467         fi
 468         # lets go for it ...
 469         patch --fuzz=0 -R -f -p0 < "$pfile"
 470         all_files swap_one
 471         sed -n -e '2q' -e 's/^Status: *//p' $pfile > .patches/status
 472         base=${pfile##*/[0-9][0-9][0-9]}
 473         [ -s .patches/name ] || echo $base > .patches/name
 474         extract_notes $pfile >> .patches/notes
 475         mv $pfile .patches/patch
 476
 477         ;;
 478   included )
 479         force=
 480         if [ " $1" = " -f" ] ; then
 481             force=yes; shift
 482         fi
 483         make_diff; get_meta
 484         if [ -s .patches/patch ]
 485         then
 486             echo >&2 Patch $name already open, please commit; exit 1;
 487         fi
 488         if [ $# -eq 0 ]
 489         then
 490             echo "Unapplied patches are:"
 491             ls .patches/removed
 492             exit 0;
 493         fi
 494         if [ $# -ne 1 ]
 495         then
 496              echo >&2 "Usage: p included patchname"; exit 1
 497         fi
 498         case $1 in
 499             last ) pfile=`ls -d .patches/removed/[0-9]* | tail -1` ;;
 500             */* ) echo >&2 "Only local patches can have been included"; exit 1 ;;
 501             *) pfile=`echo .patches/removed/*$1*`
 502         esac
 503         if [ ! -f "$pfile" ]
 504         then echo >&2 "Cannot find unique patch '$1' - found $pfile"; exit 1
 505         fi
 506         echo "Using $pfile..."
 507
 508         # make sure patch applies in reverse
 509         if patch -s --fuzz=0  -l --dry-run -f -p0 -R < "$pfile"
 510         then echo "Yep, that seems to be included"
 511         elif [ -n "$force" ]
 512         then echo "It doesn't apply reverse-out cleanly, but you asked for it..."
 513         else echo >&2 "Sorry, patch cannot be removed"; exit 1
 514         fi
 515         mv "$pfile" .patches/patch
 516         name=${pfile##*/[0-9][0-9][0-9]}
 517         save_patch included $name
 518         echo "Moved to $new$name"
 519         ;;
 520   review )
 521         # there are some patches in .removed that may be included in the current source
 522         # we try to backout each one. If it backs out successfully, we move it to
 523         # .reviewed and conitnue, else  we abort
 524         # Once this has been done often enough, 'reviewed' should be run to
 525         # move stuff to 'included' and to revert those patches
 526         force=
 527         if [ " $1" = " -f" ] ; then
 528             force=yes; shift
 529         fi
 530         make_diff; get_meta
 531         if [ -s .patches/path ]
 532         then
 533             echo >&2 Patch $name already open, please deal with it; exit 1;
 534         fi
 535         if [ $# -eq 0 ]
 536         then
 537             echo "Pending patches are:"
 538             ls .patches/removed
 539             exit 0;
 540         fi
 541         if [ $# -ne 1 ]
 542         then
 543              echo >&2 "Usage: p review patchname"; exit 1
 544         fi
 545         case $1 in
 546             */* ) echo >&2 "Only local patches can have been included"; exit 1 ;;
 547             *) pfile=`echo .patches/removed/*$1*`
 548         esac
 549         if [ ! -f "$pfile" ]
 550         then echo >&2 "Cannot find unique patch '$1' - found $pfile"; exit 1
 551         fi
 552         echo "Starting from $pfile..."
 553         found=
 554         for fl in .patches/removed/*
 555         do
 556           if [ " $fl" = " $pfile" ]; then found=yes ; fi
 557           if [ -n "$found" ]; then
 558               echo Checking $fl
 559               find_prefix "$fl"
 560               lsdiff --strip=$prefix "$fl" | grep -v 'file.*changed' | while read a b
 561               do check_out $a
 562               done
 563               if patch -s --fuzz=0 --dry-run -f -p$prefix -R < "$fl"
 564               then echo Looks good..
 565               elif [ -n "$force" ]
 566               then echo "It doesn't backout cleanly, but you asked for it..."
 567                   cp $fl .patches/last-backed
 568               else echo "Patch won't back out, sorry"
 569                   exit 1
 570               fi
 571               patch --fuzz=0 -f -p$prefix -R < "$fl" | tee .patches/tmp
 572               sed -n -e '2q' -e 's/^Status: *//p' $fl > .patches/status
 573               base=${fl##*/}
 574               base=${base##[0-9][0-9][0-9]}
 575               base=${base##patch-?-}
 576               [ -s .patches/name ] || echo $base > .patches/name
 577               extract_notes $fl >> .patches/notes
 578               rm -f .patches/wiggled
 579         sed -n -e 's/.*saving rejects to file \(.*\).rej/\1/p' .patches/tmp |
 580         while read file
 581         do  echo Wiggling $file.rej into place
 582             rm -f $file.porig
 583             > .patches/wiggled
 584             wiggle --replace --merge $file $file.rej ||
 585             echo $file >> .patches/to-resolve
 586         done
 587
 588               mv $fl .patches/patch
 589               save_patch reviewed $base
 590               if [ -f .patches/wiggled ]
 591               then echo 'Some wiggling was needed. Please review and commit'
 592                   exit 0
 593               fi
 594               p commit || exit 1
 595           fi
 596         done
 597         ;;
 598
 599   reviewed )
 600               # all the currently applied patches are patches that have been
 601               # reviewed as included.
 602               # rip them out and stick them (reversed) into included.
 603               while p open last
 604               do
 605                 make_diff -R
 606                 get_meta
 607                 save_patch included "$name"
 608                 echo Saved as "$new$name"
 609                 all_files discard_one
 610                 rm -f .patches/name .patches/status .patches/notes
 611               done
 612               ;;
 613   list )
 614             echo "Applied patches are:"
 615             ls .patches/applied
 616
 617             echo "Unapplied patches are:"
 618             ls .patches/removed
 619             exit 0
 620             ;;
 621  apply )
 622         force= append=
 623         if [ " $1" = " -f" ]; then
 624             force=yes; shift
 625         fi
 626         if [ " $1" = " -a" ]; then
 627             append=yes; shift
 628         fi
 629         make_diff
 630         get_meta
 631         if [ -s .patches/patch -a -z "$append" ]
 632         then
 633             echo >&2 Patch $name already open - please commit ; exit 1;
 634         fi
 635         if [ $# -eq 0 ]
 636         then
 637             echo "Unapplied patches are:"
 638             ls .patches/removed
 639             exit 0
 640         fi
 641         if [ $# -ne 1 ]
 642         then echo >&2 "Usage: p apply patchname"; exit 1
 643         fi
 644         case $1 in
 645             last ) pfile=`ls -d .patches/removed/[0-9]* | tail -1` ; echo last is "$pfile";;
 646             */* ) pfile=$1 ;;
 647             * ) pfile=`echo .patches/removed/*$1*`
 648         esac
 649         if [ ! -f "$pfile" ]
 650         then echo >&2 "Cannot find unique patch '$1' - found: $pfile"; exit 1
 651         fi
 652         find_prefix "$pfile"
 653         lsdiff --strip=$prefix "$pfile" | grep -v 'file.*changed' | while read a b
 654         do check_out $a
 655         done
 656         # lets see if it applies cleanly
 657         if patch -s --fuzz=0 --dry-run -f -p$prefix < "$pfile"
 658         then echo OK, it seems to apply
 659         elif [ -n "$force" ]
 660         then echo "It doesn't apply cleanly, but you asked for it...."
 661             echo "Saving original at .patches/last-applied"
 662             cp $pfile .patches/last-applied
 663         else echo >&2 "Sorry, patch doesn't apply"; exit 1
 664         fi
 665         # lets go for it ...
 666         patch --fuzz=0 -f -p$prefix < "$pfile" | tee .patches/tmp
 667         sed -n -e '2q' -e 's/^Status: *//p' $pfile > .patches/status
 668         base=${pfile##*/}
 669         base=${base##[0-9][0-9][0-9]}
 670         base=${base##patch-?-}
 671         [ -s .patches/name ] || echo $base > .patches/name
 672         extract_notes $pfile >> .patches/notes
 673
 674         sed -n -e 's/.*saving rejects to file \(.*\).rej/\1/p' .patches/tmp |
 675         while read file
 676         do  echo Wiggling $file.rej into place
 677             rm -f $file.porig
 678             wiggle --replace --merge $file $file.rej ||
 679             echo $file >> .patches/to-resolve
 680         done
 681
 682         case $pfile in
 683             .patches/removed/* )
 684                 mv $pfile .patches/patch
 685         esac
 686         ;;
 687
 688   publish )
 689         name=`date -u +%Y-%m-%d-%H`
 690         if [ -d .patches/dest ]
 691         then : good
 692         else echo >&2 No destination specified at .patches/dest ; exit 1;
 693         fi
 694         if [ -d .patches/dest/$name ]
 695         then
 696             echo >&2 $name already exists ; exit 1
 697         fi
 698         target=.patches/dest/$name
 699         mkdir $target
 700         if [ -f .patches/get-version ] ;
 701         then ./.patches/get-version > $target/version
 702         fi
 703         [ -f .config ] && cp .config $target
 704         cp .patches/applied/* $target
 705         mkdir $target/misc
 706         cp 2> /dev/null .patches/removed/* $target/misc || rmdir $target/misc
 707         chmod -R a+rX $target
 708         all_files diff_one_orig > $target/patch-all-$name
 709         cd $target
 710         echo Published at `/bin/pwd`
 711         ;;
 712   clean )
 713         all_files forget_one
 714         > .patches/files
 715         ;;
 716   openall )
 717         while p open last && p discard ; do : ; done
 718         ;;
 719   recommit )
 720         make_diff
 721         get_meta
 722         if [ -s .patches/patch ]
 723         then
 724             echo >&2 Patch $name already open - please commit ; exit 1;
 725         fi
 726         if [ $# -eq 0 ]
 727         then
 728             echo "Unapplied patches are:"
 729             ls .patches/removed
 730             exit 0
 731         fi
 732         if [ $# -ne 1 ]
 733         then echo >&2 "Usage: p recommit patchname"; exit 1
 734         fi
 735         case $1 in
 736             last ) pfile=`ls -d .patches/removed/[0-9]* | tail -1` ; echo last is "$pfile";;
 737             */* ) pfile=$1 ;;
 738             * ) pfile=`echo .patches/removed/*$1*`
 739         esac
 740         if [ ! -f "$pfile" ]
 741         then echo >&2 "Cannot find unique patch '$1' - found: $pfile"; exit 1
 742         fi
 743         while [ -s "$pfile" ]  &&
 744              p apply last && p commit ; do : ; done
 745         ;;
 746   decommit )
 747         make_diff
 748         get_meta
 749         if [ -s .patches/patch ]
 750         then
 751             echo >&2 Patch $name already open - please commit ; exit 1;
 752         fi
 753         if [ $# -eq 0 ]
 754         then
 755             echo "Applied patches are:"
 756             ls .patches/applied
 757             exit 0
 758         fi
 759         if [ $# -ne 1 ]
 760         then echo >&2 "Usage: p decommit patchname"; exit 1
 761         fi
 762         case $1 in
 763             last ) pfile=`ls -d .patches/applied/[0-9]* | tail -1` ; echo last is "$pfile";;
 764             */* ) pfile=$1 ;;
 765             * ) pfile=`echo .patches/applied/*$1*`
 766         esac
 767         if [ ! -f "$pfile" ]
 768         then echo >&2 "Cannot find unique patch '$1' - found: $pfile"; exit 1
 769         fi
 770         while [ -s "$pfile" ]  &&
 771              p open last && p discard ; do : ; done
 772         ;;
 773   snapshot )
 774         all_files snap_one
 775         ;;
 776   snapdiff )
 777         all_files snap_diff
 778         ;;
 779   snapback )
 780         all_files snap_back
 781         ;;
 782   resolve )
 783         if [ ! -s .patches/resolving ]
 784         then sort -u .patches/to-resolve > .patches/resolving ; > .patches/to-resolve
 785         fi
 786         if [ ! -s .patches/resolving ]
 787         then echo "Nothing to resolve" ; exit 0;
 788         fi
 789         echo "Resolving: " ; cat .patches/resolving
 790         for file in `cat .patches/resolving`
 791         do
 792           ${EDITOR:-vi} $file
 793           rm -f $file.porig
 794           wiggle --replace --merge $file ||
 795             echo $file >> .patches/to-resolve
 796         done
 797         > .patches/resolving
 798         ;;
 799   pull )
 800         cd .patches/SOURCE && bk pull
 801         ;;
 802   update )
 803         make_diff
 804         get_meta
 805         if [ -s .patches/patch ]
 806         then
 807                 echo >&2 Patch $name already open - please commit; exit 1;
 808         fi
 809         p openall && p clean &&
 810           (cd .patches/SOURCE ; bk export -tpatch -rLATEST, ) > .patches/imported-patch &&
 811           patch --dry-run -f -p1 < .patches/imported-patch &&
 812           patch -f -p1 < .patches/imported-patch &&
 813           ( rm .patches/imported-patch ; cd .patches/SOURCE ; bk tag LATEST )
 814         ;;
 815
 816   premail )
 817         # Convert some applied patches into email messages.
 818         # Select patches that start with $1. Look in .patches/cc for who to Cc: to
 819         rmdir .patches/mail 2>/dev/null
 820         if [ -d .patches/mail ] ; then
 821             echo >&2 There is already some email - run "email" or "nomail"
 822             ls .patches/mail
 823             exit 1;
 824         fi
 825         mkdir .patches/mail
 826         if [ ! -s .patches/maintainer ] ; then
 827             echo "No maintainer - please add one"
 828             exit 1;
 829         fi
 830         if [ ! -s .patches/owner ] ; then
 831             echo "Your address and other headers must be in .patches/owner"
 832             exit 1;
 833         fi
 834         messid="<`date +'%Y%m%d%H%M%S'`.$$.patches@`uname -n`>"
 835         cnt=0
 836         for patch in .patches/applied/???${1}*
 837         do
 838           n=${patch##*/}
 839           n=${n:0:3}
 840           if [ -n "$2" ] && [ $2 -gt $n ] ; then continue; fi
 841           if [ -n "$3" ] && [ $3 -lt $n ] ; then continue; fi
 842           cnt=$(expr $cnt + 1 )
 843         done
 844         this=1
 845         if [ $cnt -gt 1 ]
 846         then
 847         {
 848             if [ -s .patches/owner.$1 ] ; then
 849                 cat .patches/owner.$1
 850             else
 851                 cat .patches/owner
 852             fi
 853             echo "To: `cat .patches/maintainer`"
 854             if [ -s .patches/cc ] ; then
 855                 while read word prefix addr
 856                   do if [ " $word" = " $1" ] ; then
 857                         echo "Cc: $addr"
 858                         sprefix="$prefix: "
 859                     fi
 860                   done < .patches/cc
 861             fi
 862             if [ $cnt = 1 ]
 863                   then
 864                   echo "Subject: [PATCH] ${sprefix}Intro"
 865                   else
 866                   echo "Subject: [PATCH 000 of $cnt] ${sprefix}Introduction"
 867             fi
 868             echo "Message-ID: $messid"
 869             echo
 870             echo PUT COMMENTS HERE
 871         } > .patches/mail/000Intro
 872         fi
 873
 874         for patch in .patches/applied/???${1}*
 875         do
 876           n=${patch##*/}
 877           n=${n:0:3}
 878           if [ -n "$2" ] && [ $2 -gt $n ] ; then continue; fi
 879           if [ -n "$3" ] && [ $3 -lt $n ] ; then continue; fi
 880           {
 881               sprefix=
 882               if [ -s .patches/owner.$1 ] ; then
 883                 cat .patches/owner.$1
 884               else
 885                 cat .patches/owner
 886               fi
 887               echo "To: `cat .patches/maintainer`"
 888               if [ -s .patches/cc ] ; then
 889                   while read word prefix addr
 890                     do if [ " $word" = " $1" ] ; then
 891                         echo "Cc: $addr"
 892                         sprefix="$prefix: "
 893                     fi
 894                   done < .patches/cc
 895               fi
 896               head=`sed -e '/^Status/d' -e '/^$/d' -e q $patch`
 897               zerothis=$(expr $this + 1000)
 898               if [ $cnt = 1 ]
 899                   then
 900                   echo "Subject: [PATCH] $sprefix$head"
 901                   else
 902                   echo "Subject: [PATCH ${zerothis#1} of $cnt] $sprefix$head"
 903               fi
 904               echo "References: $messid"
 905               echo
 906               if [ $cnt = 1 ] ; then
 907                   echo "### Comments for Changeset"
 908               fi
 909               sed -e '1,3d' $patch
 910           } > .patches/mail/${patch#.patches/applied/}
 911           this=$(expr $this + 1)
 912         done
 913         if [ -f .patches/mail/000Intro ]; then cat .patches/mail/* | sed -n -e 's/^Subject://p'  >> .patches/mail/000Intro ; fi
 914         ls .patches/mail
 915         ;;
 916
 917     nomail )
 918           echo "Removing .patches/mail directory"
 919           rm -rf .patches/mail
 920           ;;
 921
 922      email )
 923         PATH=$HOME/bin:/usr/lib:/usr/sbin:$PATH
 924           for i in .patches/mail/*
 925           do
 926             if [ -f "$i" ]
 927                 then
 928                 echo Sending $i.
 929                 sendmail -t < $i && rm $i
 930             fi
 931           done
 932           ;;
 933    help )
 934         helpfile=$0.help
 935         if [ ! -f $helpfile ]
 936         then echo >&2 $helpfile not found: no help available ; exit 2;
 937         fi
 938         if [ -z "$1" ] ; then
 939            echo
 940            sed -n -e '/^ /p' -e '/^[^ ]/q' $helpfile
 941            echo
 942            echo "Available help topics are:"
 943            sed -n '/^[^ ]/p' $helpfile | sort | column
 944         else
 945             echo
 946             awk '$0 ~ /^[^ ]/ && printed {doprint=0; printed=0}
 947                 doprint && $0 !~ /^[^ ]/ {print; printed=1;}
 948                 $0 == "'$1'" {doprint=1; found=1}
 949                 END { if (!found) print "No help available for '$1'"; }
 950                 ' $helpfile
 951             echo
 952         fi
 953         ;;
 954   * )
 955         echo >&2 "p $cmd - unknown command - try 'p help'"; exit 1;
 956 esac
 957 exit 0;