libgo/match.sh

   1 #!/bin/sh
   2
   3 # Copyright 2016 The Go Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style
   5 # license that can be found in the LICENSE file.
   6
   7 # Given a source directory, returns the non-test Go files that should
   8 # be built for this target.  This implements Go's build constraints in
   9 # a shell script.  There is similar code in testsuite/gotest.
  10
  11 set -e
  12
  13 LANG=C
  14 LC_ALL=C
  15 LC_CTYPE=C
  16 export LANG LC_ALL LC_CTYPE
  17
  18 srcdir=""
  19 goarch=""
  20 goos=""
  21 extrafiles=""
  22 cmdlinetag="nosuchtag"
  23 cgotag="cgo"
  24
  25 for arg; do
  26     case "x$arg" in
  27         x--srcdir)
  28             srcdir=$2
  29             shift
  30             shift
  31             ;;
  32         x--srcdir=*)
  33             srcdir=`echo $1 | sed -e 's/^--srcdir=//'`
  34             shift
  35             ;;
  36         x--goarch)
  37             goarch=$2
  38             shift
  39             shift
  40             ;;
  41         x--goarch=*)
  42             goarch=`echo $1 | sed -e 's/^--goarch=//'`
  43             shift
  44             ;;
  45         x--goos)
  46             goos=$2
  47             shift
  48             shift
  49             ;;
  50         x--goos=*)
  51             goos=`echo $1 | sed -e 's/^--goos=//'`
  52             shift
  53             ;;
  54         x--extrafiles)
  55             extrafiles=$2
  56             shift
  57             shift
  58             ;;
  59         x--extrafiles=*)
  60             extrafiles=`echo $1 | sed -e 's/^--extrafiles=//'`
  61             shift
  62             ;;
  63         x--tag)
  64             cmdlinetag=$2
  65             shift
  66             shift
  67             ;;
  68         x--tag=*)
  69             cmdlinetag=`echo $1 | sed -e 's/^--tag=//'`
  70             shift
  71             ;;
  72         x--nocgo)
  73             cgotag="nosuchtag"
  74             shift
  75             ;;
  76         *)
  77             echo 1>&2 "unknown argument $arg"
  78             exit 1
  79             ;;
  80     esac
  81 done
  82
  83 cd $srcdir
  84
  85 gofiles=
  86 for f in *.go; do
  87     case $f in
  88         *_test.go)
  89             ;;
  90         *.go)
  91             gofiles="$gofiles $f"
  92             ;;
  93     esac
  94 done
  95
  96 if test "$gofiles" = ""; then
  97     echo 1>&2 "no non-test .go files in $srcdir"
  98     exit 1
  99 fi
 100
 101 matched=
 102 for f in $gofiles; do
 103     tag1=`echo $f | sed -e 's/^.*_\([^_]*\).go$/\1/'`
 104     tag2=`echo $f | sed -e 's/^.*_\([^_]*\)_[^_]*.go$/\1/'`
 105     if test x$tag1 = x$f; then
 106         tag1=
 107     fi
 108     if test x$tag2 = x$f; then
 109         tag2=
 110     fi
 111
 112     case "$tag1" in
 113         "") ;;
 114         $goarch) ;;
 115         $goos) ;;
 116         android | darwin | dragonfly | freebsd | linux | nacl | netbsd | openbsd | plan9 | solaris | windows)
 117             tag1=nonmatchingtag
 118             ;;
 119         386 | amd64 | amd64p32 | arm | armbe | arm64 | arm64be | alpha | ia64 | m68k | ppc64 | ppc64le | mips | mipsle | mips64 | mips64le | mips64p32 | mips64p32le | mipso32 | mipsn32 | mipsn64 | mipso64 | ppc | s390 | s390x | sparc | sparc64)
 120             tag1=nonmatchingtag
 121             ;;
 122     esac
 123
 124     case "$tag2" in
 125         "") ;;
 126         $goarch) ;;
 127         $goos) ;;
 128         android | darwin | dragonfly | freebsd | linux | nacl | netbsd | openbsd | plan9 | solaris | windows)
 129             tag2=nonmatchingtag
 130             ;;
 131         386 | amd64 | amd64p32 | arm | armbe | arm64 | arm64be | alpha | ia64 | m68k | ppc64 | ppc64le | mips | mipsle | mips64 | mips64le | mips64p32 | mips64p32le | mipso32 | mipsn32 | mipsn64 | mipso64 | ppc | s390 | s390x | sparc | sparc64)
 132             tag2=nonmatchingtag
 133             ;;
 134     esac
 135
 136     if test x$tag1 != xnonmatchingtag -a x$tag2 != xnonmatchingtag; then
 137         # Pipe through cat so that `set -e` doesn't affect fgrep.
 138         tags=`sed '/^package /q' < $f | grep '^// +build ' | cat`
 139         omatch=true
 140         first=true
 141         match=false
 142         for tag in $tags; do
 143             case $tag in
 144                 "//")
 145                     ;;
 146                 "+build")
 147                     if test "$first" = "true"; then
 148                         first=false
 149                     elif test "$match" = "false"; then
 150                         omatch=false
 151                     fi
 152                     match=false
 153                     ;;
 154                 $goos | $goarch | $cgotag | $cmdlinetag)
 155                     match=true
 156                     ;;
 157                 "!"$goos | "!"$goarch | "!"$cgotag | "!"$cmdlinetag)
 158                     ;;
 159                 *,*)
 160                     cmatch=true
 161                     for ctag in `echo $tag | sed -e 's/,/ /g'`; do
 162                         case $ctag in
 163                             $goos | $goarch | $cgotag | $cmdlinetag)
 164                                 ;;
 165                             "!"$goos | "!"$goarch | "!"$cgotag | "!"$cmdlinetag)
 166                                 cmatch=false
 167                                 ;;
 168                             "!"*)
 169                                 ;;
 170                             *)
 171                                 cmatch=false
 172                                 ;;
 173                         esac
 174                     done
 175                     if test "$cmatch" = "true"; then
 176                         match=true
 177                     fi
 178                     ;;
 179                 "!"*)
 180                     match=true
 181                     ;;
 182             esac
 183         done
 184
 185         if test "$match" = "false" -a "$first" = "false"; then
 186             omatch=false
 187         fi
 188
 189         if test "$omatch" = "true"; then
 190             matched="$matched $srcdir/$f"
 191         fi
 192     fi
 193 done
 194
 195 echo $matched $extrafiles
 196
 197 exit 0