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      1 # Copyright (C) 2010 The Android Open Source Project
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #      http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 #
     15 
     16 # This script is used to convert a dependency file generated by a cygwin-less
     17 # GCC compiler program into something that can be parsed into a cygwin-based
     18 # GNU Make program.
     19 #
     20 # More specifically, it's going to translate stuff like:
     21 #
     22 # D:/Stuff/source.o: \
     23 #  D:/Stuff/source.h \
     24 #  C:/NDK/sysroot/include/string.h \
     25 #  C:/NDK/sysroot/include/malloc.h
     26 #
     27 # into
     28 #
     29 # /cygdrive/d/Stuff/source.o: \
     30 #  /cygdrive/d/Stuff/source.h \
     31 #  /cygdrive/c/NDK/sysroot/include/string.h \
     32 #  /cygdrive/c/NDK/sysroot/include/malloc.h
     33 #
     34 
     35 BEGIN {
     36     # TODO: We could determine this dynamically before calling this script
     37     CYGDRIVE_PREFIX = "/cygdrive/"
     38 }
     39 
     40 {
     41     LINE=""
     42     SEP=""
     43     for (nn = 1; nn <= NF; nn++) {
     44         if ($nn ~ /^[A-Za-z]:/) {
     45             LINE = LINE SEP CYGDRIVE_PREFIX tolower(substr($nn,1,1)) "/" substr($nn,4)
     46         } else {
     47             LINE = LINE SEP $nn
     48         }
     49         SEP=" "
     50     }
     51     # Any leading space on the original line should be preserved
     52     MARGIN=""
     53     if (match($0,"^[[:space:]]+")) {
     54         MARGIN=substr($0,RSTART,RLENGTH)
     55     }
     56     printf("%s%s\n", MARGIN, LINE)
     57 }
     58