about summary refs log tree commit diff
path: root/Completion/Unix/Command/_make
blob: f0d208837ea81f09970c032dc5fea6eabcc250e6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
#compdef make gmake pmake dmake

# TODO: Based on targets given on the command line, show only variables that
# are used in those targets and their dependencies.

local prev="$words[CURRENT-1]" file expl tmp is_gnu dir incl match
local -A TARGETS VARIABLES

expandVars() {
  local open close var val front ret tmp=$1

  front=${tmp%%\$*}
  case $tmp in
    (\(*) # Variable of the form $(foobar)
    open='('
    close=')'
    ;;

    ({*) # ${foobar}
    open='{'
    close='}'
    ;;

    ([[:alpha:]]*) # $foobar. This is exactly $(f)oobar.
    open=''
    close=''
    var=${(s::)var[1]}
    ;;

    (\$*) # Escaped $.
    print -- "${front}\$$(expandVars ${tmp#\$})"
    return
    ;;

    (*) # Nothing left to substitute.
    print -- $tmp
    return
    ;;
  esac

  if [[ -n $open ]]
  then
    var=${tmp#$open}
    var=${var%%$close*}
  fi

  case $var in
    ([[:alnum:]_]#)
    val=${VARIABLES[$var]}
    ret=${ret//\$$open$var$close/$val}
    ;;

    (*)
    # Improper variable name. No replacement.
    # I'm not sure if this is desired behavior.
    front+="\$$open$var$close"
    ret=${ret/\$$open$var$close/}
    ;;
  esac

  print -- "${front}$(expandVars ${ret})"
}

parseMakefile () {
  local input var val target dep TAB=$'\t' dir=$1 tmp

  while read input
  do
    case "$input " in
      # VARIABLE = value
      ([[:alnum:]][[:alnum:]_]#[ $TAB]#=*)
      var=${input%%[ $TAB]#=*}
      val=${input#*=}
      val=${val##[ $TAB]#}
      VARIABLES[$var]=$val
      ;;

      # VARIABLE := value
      # Evaluated immediately
      ([[:alnum:]][[:alnum:]_]#[ $TAB]#:=*)
      var=${input%%[ $TAB]#:=*}
      val=${input#*=}
      val=${val##[ $TAB]#}
      val=$(expandVars $val)
      VARIABLES[$var]=$val
      ;;

      # TARGET: dependencies
      # TARGET1 TARGET2 TARGET3: dependencies
      ([[:alnum:]][^$TAB:=]#:[^=]*)
      input=$(expandVars $input)
      target=${input%%:*}
      dep=${input#*:}
      dep=${(z)dep}
      dep="$dep"
      for tmp in ${(z)target}
      do
        TARGETS[$tmp]=$dep
      done
      ;;

      # Include another makefile
      (${~incl} *)
      local f=${input##${~incl} ##}
      if [[ $incl == '.include' ]]
      then
        f=${f#[\"<]}
        f=${f%[\">]}
      fi
      f=$(expandVars $f)
      case $f in
        (/*) ;;
        (*) f=$dir/$f ;;
      esac

      if [[ -r $f ]]
      then
        parseMakefile ${f%%/[^/]##} < $f
      fi
      ;;
    esac
  done
}

findBasedir () {
  local file index basedir
  basedir=$PWD
  for (( index=0; index < $#@; index++ ))
  do
    if [[ $@[index] == -C ]]
    then
      file=${~@[index+1]};
      if [[ -z $file ]]
      then
        # make returns with an error if an empty arg is given
        # even if the concatenated path is a valid directory
        return
      elif [[ $file == /* ]]
      then
        # Absolute path, replace base directory
        basedir=$file
      else
        # Relative, concatenate path
        basedir=$basedir/$file
      fi
    fi
  done
  print -- $basedir
}

_pick_variant -r is_gnu gnu=GNU unix -v -f

if [[ $is_gnu == gnu ]]
then
  incl="(-|)include"
else
  incl=.include
fi

if [[ "$prev" == -[CI] ]]
then
  _files -W ${(q)$(findBasedir ${words[1,CURRENT-1]})} -/
elif [[ "$prev" == -[foW] ]]
then
  _files -W ${(q)$(findBasedir $words)}
else
  file="$words[(I)-f]"
  if (( file ))
  then
    file=${~words[file+1]}
    [[ $file == [^/]* ]] && file=${(q)$(findBasedir $words)}/$file
    [[ -r $file ]] || file=
  else
    local basedir
    basedir=${(q)$(findBasedir $words)}
    if [[ $is_gnu == gnu && -r $basedir/GNUmakefile ]]
    then
      file=$basedir/GNUmakefile
    elif [[ -r $basedir/makefile ]]
    then
      file=$basedir/makefile
    elif [[ -r $basedir/Makefile ]]
    then
      file=$basedir/Makefile
    else
      file=''
    fi
  fi

  if [[ -n "$file" ]]
  then
    if [[ $is_gnu == gnu ]] && zstyle -t ":completion:${curcontext}:targets" call-command
    then
      parseMakefile $PWD < <(_call_program targets "$words[1]" -nsp --no-print-directory -f "$file" .PHONY 2> /dev/null)
    else
      parseMakefile $PWD < $file
    fi
  fi

  if [[ $PREFIX == *'='* ]]
  then
    # Complete make variable as if shell variable
    compstate[parameter]="${PREFIX%%\=*}"
    compset -P 1 '*='
    _value "$@"
  else
    _tags targets variables
    while _tags
    do
      _requested targets expl 'make targets' \
        compadd -- ${(k)TARGETS}
      _requested variables expl 'make variables' \
        compadd -S '=' -- ${(k)VARIABLES}
    done
  fi
fi