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versiongenerate.py
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1 #!/usr/bin/env python
2 #
3 # Copyright 2008, Google Inc.
4 # All rights reserved.
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30 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 
32 """A script to prepare version informtion for use the gtest Info.plist file.
33 
34  This script extracts the version information from the configure.ac file and
35  uses it to generate a header file containing the same information. The
36  #defines in this header file will be included in during the generation of
37  the Info.plist of the framework, giving the correct value to the version
38  shown in the Finder.
39 
40  This script makes the following assumptions (these are faults of the script,
41  not problems with the Autoconf):
42  1. The AC_INIT macro will be contained within the first 1024 characters
43  of configure.ac
44  2. The version string will be 3 integers separated by periods and will be
45  surrounded by squre brackets, "[" and "]" (e.g. [1.0.1]). The first
46  segment represents the major version, the second represents the minor
47  version and the third represents the fix version.
48  3. No ")" character exists between the opening "(" and closing ")" of
49  AC_INIT, including in comments and character strings.
50 """
51 
52 import sys
53 import re
54 
55 # Read the command line argument (the output directory for Version.h)
56 if (len(sys.argv) < 3):
57  print "Usage: versiongenerate.py input_dir output_dir"
58  sys.exit(1)
59 else:
60  input_dir = sys.argv[1]
61  output_dir = sys.argv[2]
62 
63 # Read the first 1024 characters of the configure.ac file
64 config_file = open("%s/configure.ac" % input_dir, 'r')
65 buffer_size = 1024
66 opening_string = config_file.read(buffer_size)
67 config_file.close()
68 
69 # Extract the version string from the AC_INIT macro
70 # The following init_expression means:
71 # Extract three integers separated by periods and surrounded by squre
72 # brackets(e.g. "[1.0.1]") between "AC_INIT(" and ")". Do not be greedy
73 # (*? is the non-greedy flag) since that would pull in everything between
74 # the first "(" and the last ")" in the file.
75 version_expression = re.compile(r"AC_INIT\(.*?\[(\d+)\.(\d+)\.(\d+)\].*?\)",
76  re.DOTALL)
77 version_values = version_expression.search(opening_string)
78 major_version = version_values.group(1)
79 minor_version = version_values.group(2)
80 fix_version = version_values.group(3)
81 
82 # Write the version information to a header file to be included in the
83 # Info.plist file.
84 file_data = """//
85 // DO NOT MODIFY THIS FILE (but you can delete it)
86 //
87 // This file is autogenerated by the versiongenerate.py script. This script
88 // is executed in a "Run Script" build phase when creating gtest.framework. This
89 // header file is not used during compilation of C-source. Rather, it simply
90 // defines some version strings for substitution in the Info.plist. Because of
91 // this, we are not not restricted to C-syntax nor are we using include guards.
92 //
93 
94 #define GTEST_VERSIONINFO_SHORT %s.%s
95 #define GTEST_VERSIONINFO_LONG %s.%s.%s
96 
97 """ % (major_version, minor_version, major_version, minor_version, fix_version)
98 version_file = open("%s/Version.h" % output_dir, 'w')
99 version_file.write(file_data)
100 version_file.close()