ceph/src/googletest/googlemock/scripts/fuse_gmock_files.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2009, Google Inc.
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  30 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31
  32 """fuse_gmock_files.py v0.1.0
  33 Fuses Google Mock and Google Test source code into two .h files and a .cc file.
  34
  35 SYNOPSIS
  36        fuse_gmock_files.py [GMOCK_ROOT_DIR] OUTPUT_DIR
  37
  38        Scans GMOCK_ROOT_DIR for Google Mock and Google Test source
  39        code, assuming Google Test is in the GMOCK_ROOT_DIR/../googletest
  40        directory, and generates three files:
  41        OUTPUT_DIR/gtest/gtest.h, OUTPUT_DIR/gmock/gmock.h, and
  42        OUTPUT_DIR/gmock-gtest-all.cc.  Then you can build your tests
  43        by adding OUTPUT_DIR to the include search path and linking
  44        with OUTPUT_DIR/gmock-gtest-all.cc.  These three files contain
  45        everything you need to use Google Mock.  Hence you can
  46        "install" Google Mock by copying them to wherever you want.
  47
  48        GMOCK_ROOT_DIR can be omitted and defaults to the parent
  49        directory of the directory holding this script.
  50
  51 EXAMPLES
  52        ./fuse_gmock_files.py fused_gmock
  53        ./fuse_gmock_files.py path/to/unpacked/gmock fused_gmock
  54
  55 This tool is experimental.  In particular, it assumes that there is no
  56 conditional inclusion of Google Mock or Google Test headers.  Please
  57 report any problems to googlemock@googlegroups.com.  You can read
  58 http://code.google.com/p/googlemock/wiki/CookBook for more
  59 information.
  60 """
  61
  62 __author__ = 'wan@google.com (Zhanyong Wan)'
  63
  64 import os
  65 import re
  66 import sets
  67 import sys
  68
  69 # We assume that this file is in the scripts/ directory in the Google
  70 # Mock root directory.
  71 DEFAULT_GMOCK_ROOT_DIR = os.path.join(os.path.dirname(__file__), '..')
  72
  73 # We need to call into googletest/scripts/fuse_gtest_files.py.
  74 sys.path.append(os.path.join(DEFAULT_GMOCK_ROOT_DIR, '../googletest/scripts'))
  75 import fuse_gtest_files
  76 gtest = fuse_gtest_files
  77
  78 # Regex for matching '#include "gmock/..."'.
  79 INCLUDE_GMOCK_FILE_REGEX = re.compile(r'^\s*#\s*include\s*"(gmock/.+)"')
  80
  81 # Where to find the source seed files.
  82 GMOCK_H_SEED = 'include/gmock/gmock.h'
  83 GMOCK_ALL_CC_SEED = 'src/gmock-all.cc'
  84
  85 # Where to put the generated files.
  86 GTEST_H_OUTPUT = 'gtest/gtest.h'
  87 GMOCK_H_OUTPUT = 'gmock/gmock.h'
  88 GMOCK_GTEST_ALL_CC_OUTPUT = 'gmock-gtest-all.cc'
  89
  90
  91 def GetGTestRootDir(gmock_root):
  92   """Returns the root directory of Google Test."""
  93
  94   return os.path.join(gmock_root, '../googletest')
  95
  96
  97 def ValidateGMockRootDir(gmock_root):
  98   """Makes sure gmock_root points to a valid gmock root directory.
  99
 100   The function aborts the program on failure.
 101   """
 102
 103   gtest.ValidateGTestRootDir(GetGTestRootDir(gmock_root))
 104   gtest.VerifyFileExists(gmock_root, GMOCK_H_SEED)
 105   gtest.VerifyFileExists(gmock_root, GMOCK_ALL_CC_SEED)
 106
 107
 108 def ValidateOutputDir(output_dir):
 109   """Makes sure output_dir points to a valid output directory.
 110
 111   The function aborts the program on failure.
 112   """
 113
 114   gtest.VerifyOutputFile(output_dir, gtest.GTEST_H_OUTPUT)
 115   gtest.VerifyOutputFile(output_dir, GMOCK_H_OUTPUT)
 116   gtest.VerifyOutputFile(output_dir, GMOCK_GTEST_ALL_CC_OUTPUT)
 117
 118
 119 def FuseGMockH(gmock_root, output_dir):
 120   """Scans folder gmock_root to generate gmock/gmock.h in output_dir."""
 121
 122   output_file = file(os.path.join(output_dir, GMOCK_H_OUTPUT), 'w')
 123   processed_files = sets.Set()  # Holds all gmock headers we've processed.
 124
 125   def ProcessFile(gmock_header_path):
 126     """Processes the given gmock header file."""
 127
 128     # We don't process the same header twice.
 129     if gmock_header_path in processed_files:
 130       return
 131
 132     processed_files.add(gmock_header_path)
 133
 134     # Reads each line in the given gmock header.
 135     for line in file(os.path.join(gmock_root, gmock_header_path), 'r'):
 136       m = INCLUDE_GMOCK_FILE_REGEX.match(line)
 137       if m:
 138         # It's '#include "gmock/..."' - let's process it recursively.
 139         ProcessFile('include/' + m.group(1))
 140       else:
 141         m = gtest.INCLUDE_GTEST_FILE_REGEX.match(line)
 142         if m:
 143           # It's '#include "gtest/foo.h"'.  We translate it to
 144           # "gtest/gtest.h", regardless of what foo is, since all
 145           # gtest headers are fused into gtest/gtest.h.
 146
 147           # There is no need to #include gtest.h twice.
 148           if not gtest.GTEST_H_SEED in processed_files:
 149             processed_files.add(gtest.GTEST_H_SEED)
 150             output_file.write('#include "%s"\n' % (gtest.GTEST_H_OUTPUT,))
 151         else:
 152           # Otherwise we copy the line unchanged to the output file.
 153           output_file.write(line)
 154
 155   ProcessFile(GMOCK_H_SEED)
 156   output_file.close()
 157
 158
 159 def FuseGMockAllCcToFile(gmock_root, output_file):
 160   """Scans folder gmock_root to fuse gmock-all.cc into output_file."""
 161
 162   processed_files = sets.Set()
 163
 164   def ProcessFile(gmock_source_file):
 165     """Processes the given gmock source file."""
 166
 167     # We don't process the same #included file twice.
 168     if gmock_source_file in processed_files:
 169       return
 170
 171     processed_files.add(gmock_source_file)
 172
 173     # Reads each line in the given gmock source file.
 174     for line in file(os.path.join(gmock_root, gmock_source_file), 'r'):
 175       m = INCLUDE_GMOCK_FILE_REGEX.match(line)
 176       if m:
 177         # It's '#include "gmock/foo.h"'.  We treat it as '#include
 178         # "gmock/gmock.h"', as all other gmock headers are being fused
 179         # into gmock.h and cannot be #included directly.
 180
 181         # There is no need to #include "gmock/gmock.h" more than once.
 182         if not GMOCK_H_SEED in processed_files:
 183           processed_files.add(GMOCK_H_SEED)
 184           output_file.write('#include "%s"\n' % (GMOCK_H_OUTPUT,))
 185       else:
 186         m = gtest.INCLUDE_GTEST_FILE_REGEX.match(line)
 187         if m:
 188           # It's '#include "gtest/..."'.
 189           # There is no need to #include gtest.h as it has been
 190           # #included by gtest-all.cc.
 191           pass
 192         else:
 193           m = gtest.INCLUDE_SRC_FILE_REGEX.match(line)
 194           if m:
 195             # It's '#include "src/foo"' - let's process it recursively.
 196             ProcessFile(m.group(1))
 197           else:
 198             # Otherwise we copy the line unchanged to the output file.
 199             output_file.write(line)
 200
 201   ProcessFile(GMOCK_ALL_CC_SEED)
 202
 203
 204 def FuseGMockGTestAllCc(gmock_root, output_dir):
 205   """Scans folder gmock_root to generate gmock-gtest-all.cc in output_dir."""
 206
 207   output_file = file(os.path.join(output_dir, GMOCK_GTEST_ALL_CC_OUTPUT), 'w')
 208   # First, fuse gtest-all.cc into gmock-gtest-all.cc.
 209   gtest.FuseGTestAllCcToFile(GetGTestRootDir(gmock_root), output_file)
 210   # Next, append fused gmock-all.cc to gmock-gtest-all.cc.
 211   FuseGMockAllCcToFile(gmock_root, output_file)
 212   output_file.close()
 213
 214
 215 def FuseGMock(gmock_root, output_dir):
 216   """Fuses gtest.h, gmock.h, and gmock-gtest-all.h."""
 217
 218   ValidateGMockRootDir(gmock_root)
 219   ValidateOutputDir(output_dir)
 220
 221   gtest.FuseGTestH(GetGTestRootDir(gmock_root), output_dir)
 222   FuseGMockH(gmock_root, output_dir)
 223   FuseGMockGTestAllCc(gmock_root, output_dir)
 224
 225
 226 def main():
 227   argc = len(sys.argv)
 228   if argc == 2:
 229     # fuse_gmock_files.py OUTPUT_DIR
 230     FuseGMock(DEFAULT_GMOCK_ROOT_DIR, sys.argv[1])
 231   elif argc == 3:
 232     # fuse_gmock_files.py GMOCK_ROOT_DIR OUTPUT_DIR
 233     FuseGMock(sys.argv[1], sys.argv[2])
 234   else:
 235     print __doc__
 236     sys.exit(1)
 237
 238
 239 if __name__ == '__main__':
 240   main()