[libcroco] Visual Studio builds: Add .pc generation scripts

[Chun-wei Fan <fanchunwei src gnome org>]

commit d20188b9945ac8f20ae6467112fe7f5fbc3c913d
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Mar 1 18:25:43 2017 +0800

    Visual Studio builds: Add .pc generation scripts
    
    This adds Python scripts to generate .pc files for libcroco, so that
    it is easier for people who need to use the .pc files for the package.
    Integration to generate the .pc files will be added later to the project
    files.

 win32/Makefile.am |    5 +-
 win32/crocopc.py  |   33 ++++++++++++++
 win32/pc_base.py  |  124 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 win32/replace.py  |  109 ++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 269 insertions(+), 2 deletions(-)
---
diff --git a/win32/Makefile.am b/win32/Makefile.am
index e4fa9e4..b0008af 100644
--- a/win32/Makefile.am
+++ b/win32/Makefile.am
@@ -16,6 +16,7 @@
 #Author: Fan, Chun-wei
 #See COPYRIGHTS file for copyright information.
 
-SUBDIRS = \
-       vs9 vs10 vs11 vs12 vs14 vs15
+SUBDIRS = vs9 vs10 vs11 vs12 vs14 vs15
+
+EXTRA_DIST = crocopc.py pc_base.py replace.py
 
diff --git a/win32/crocopc.py b/win32/crocopc.py
new file mode 100644
index 0000000..9263ac4
--- /dev/null
+++ b/win32/crocopc.py
@@ -0,0 +1,33 @@
+#!/usr/bin/python
+#
+# Utility script to generate .pc files for GLib
+# for Visual Studio builds, to be used for
+# building introspection files
+
+# Author: Fan, Chun-wei
+# Date: March 10, 2016
+
+import os
+import sys
+
+from replace import replace_multi
+from pc_base import BasePCItems
+
+def main(argv):
+    base_pc = BasePCItems()
+
+    base_pc.setup(argv)
+    croco_version = base_pc.version.split('.')
+    pkg_replace_items = {'@LIBCROCO_MAJOR_VERSION@': croco_version[0],
+                         '@LIBCROCO_MINOR_VERSION@': croco_version[1]}
+
+    pkg_replace_items.update(base_pc.base_replace_items)
+
+    # Generate libcroco-x.y.pc
+    replace_multi(base_pc.top_srcdir + '/libcroco.pc.in',
+                  base_pc.srcdir + '/libcroco-' + croco_version[0] +
+                                   '.' + croco_version[1] + '.pc',
+                  pkg_replace_items)
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))
diff --git a/win32/pc_base.py b/win32/pc_base.py
new file mode 100644
index 0000000..f7976e8
--- /dev/null
+++ b/win32/pc_base.py
@@ -0,0 +1,124 @@
+#!/usr/bin/python
+#
+# Simple utility script to generate the basic info
+# needed in a .pc (pkg-config) file, used especially
+# for introspection purposes
+
+# This can be used in various projects where
+# there is the need to generate .pc files,
+# and is copied from GLib's $(srcroot)/win32
+
+# Author: Fan, Chun-wei
+# Date: March 10, 2016
+
+import os
+import sys
+import argparse
+
+class BasePCItems:
+    def __init__(self):
+        self.base_replace_items = {}
+        self.exec_prefix = ''
+        self.includedir = ''
+        self.libdir = ''
+        self.prefix = ''
+        self.srcdir = os.path.dirname(__file__)
+        self.top_srcdir = self.srcdir + '\\..'
+        self.version = ''
+
+    def setup(self, argv, parser=None):
+        if parser is None:
+            parser = argparse.ArgumentParser(description='Setup basic .pc file info')
+        parser.add_argument('--prefix', help='prefix of the installed library',
+                            required=True)
+        parser.add_argument('--exec-prefix',
+                            help='prefix of the installed programs, \
+                                  if different from the prefix')
+        parser.add_argument('--includedir',
+                            help='includedir of the installed library, \
+                                  if different from ${prefix}/include')
+        parser.add_argument('--libdir',
+                            help='libdir of the installed library, \
+                                  if different from ${prefix}/lib')
+        parser.add_argument('--version', help='Version of the package',
+                            required=True)
+        args = parser.parse_args()
+
+        self.version = args.version
+
+        # check whether the prefix and exec_prefix are valid
+        if not os.path.exists(args.prefix):
+            raise SystemExit('Specified prefix \'%s\' is invalid' % args.prefix)
+
+        # use absolute paths for prefix
+        self.prefix = os.path.abspath(args.prefix).replace('\\','/')
+
+        # check and setup the exec_prefix
+        if getattr(args, 'exec_prefix', None) is None:
+            exec_prefix_use_shorthand = True
+            self.exec_prefix = '${prefix}'
+        else:
+            if args.exec_prefix.startswith('${prefix}'):
+                exec_prefix_use_shorthand = True
+                input_exec_prefix = args.prefix + args.exec_prefix[len('${prefix}'):]
+            else:
+                exec_prefix_use_shorthand = False
+                input_exec_prefix = args.exec_prefix
+            if not os.path.exists(input_exec_prefix):
+                raise SystemExit('Specified exec_prefix \'%s\' is invalid' %
+                                  args.exec_prefix)
+            if exec_prefix_use_shorthand is True:
+                self.exec_prefix = args.exec_prefix.replace('\\','/')
+            else:
+                self.exec_prefix = os.path.abspath(input_exec_prefix).replace('\\','/')
+
+        # check and setup the includedir
+        if getattr(args, 'includedir', None) is None:
+            self.includedir = '${prefix}/include'
+        else:
+            if args.includedir.startswith('${prefix}'):
+                includedir_use_shorthand = True
+                input_includedir = args.prefix + args.includedir[len('${prefix}'):]
+            else:
+                if args.includedir.startswith('${exec_prefix}'):
+                    includedir_use_shorthand = True
+                    input_includedir = input_exec_prefix + args.includedir[len('${exec_prefix}'):]
+                else:
+                    includedir_use_shorthand = False
+                    input_includedir = args.includedir
+            if not os.path.exists(input_includedir):
+                raise SystemExit('Specified includedir \'%s\' is invalid' %
+                                  args.includedir)
+            if includedir_use_shorthand is True:
+                self.includedir = args.includedir.replace('\\','/')
+            else:
+                self.includedir = os.path.abspath(input_includedir).replace('\\','/')
+
+        # check and setup the libdir
+        if getattr(args, 'libdir', None) is None:
+            self.libdir = '${prefix}/lib'
+        else:
+            if args.libdir.startswith('${prefix}'):
+                libdir_use_shorthand = True
+                input_libdir = args.prefix + args.libdir[len('${prefix}'):]
+            else:
+                if args.libdir.startswith('${exec_prefix}'):
+                    libdir_use_shorthand = True
+                    input_libdir = input_exec_prefix + args.libdir[len('${exec_prefix}'):]
+                else:
+                    libdir_use_shorthand = False
+                    input_libdir = args.libdir
+            if not os.path.exists(input_libdir):
+                raise SystemExit('Specified libdir \'%s\' is invalid' %
+                                             args.libdir)
+            if libdir_use_shorthand is True:
+                self.libdir = args.libdir.replace('\\','/')
+            else:
+                self.libdir = os.path.abspath(input_libdir).replace('\\','/')
+
+        # setup dictionary for replacing items in *.pc.in
+        self.base_replace_items.update({'@VERSION@': self.version})
+        self.base_replace_items.update({'@prefix@': self.prefix})
+        self.base_replace_items.update({'@exec_prefix@': self.exec_prefix})
+        self.base_replace_items.update({'@libdir@': self.libdir})
+        self.base_replace_items.update({'@includedir@': self.includedir})
diff --git a/win32/replace.py b/win32/replace.py
new file mode 100644
index 0000000..0cb269a
--- /dev/null
+++ b/win32/replace.py
@@ -0,0 +1,109 @@
+#!/usr/bin/python
+#
+# Simple utility script to manipulate
+# certain types of strings in a file
+
+# This can be used in various projects where
+# there is the need to replace strings in files,
+# and is copied from GLib's $(srcroot)/win32
+
+# Author: Fan, Chun-wei
+# Date: September 03, 2014
+
+import os
+import sys
+import re
+import string
+import argparse
+
+valid_actions = ['remove-prefix',
+                 'replace-var',
+                 'replace-str',
+                 'remove-str']
+
+def replace_multi(src, dest, replace_items):
+    with open(src, 'r') as s:
+        with open(dest, 'w') as d:
+            for line in s:
+                replace_dict = dict((re.escape(key), value) \
+                               for key, value in replace_items.items())
+                replace_pattern = re.compile("|".join(replace_dict.keys()))
+                d.write(replace_pattern.sub(lambda m: \
+                        replace_dict[re.escape(m.group(0))], line))
+
+def replace(src, dest, instring, outstring):
+    replace_item = {instring: outstring}
+    replace_multi(src, dest, replace_item)
+
+def check_required_args(args, params):
+    for param in params:
+        if getattr(args, param, None) is None:
+            raise SystemExit('%s: error: --%s argument is required' % (__file__, param))
+
+def warn_ignored_args(args, params):
+    for param in params:
+        if getattr(args, param, None) is not None:
+            print('%s: warning: --%s argument is ignored' % (__file__, param))
+
+def main(argv):
+
+    parser = argparse.ArgumentParser(description='Process strings in a file.')
+    parser.add_argument('-a',
+                        '--action',
+                        help='Action to carry out.  Can be one of:\n'
+                             'remove-prefix\n'
+                             'replace-var\n'
+                             'replace-str\n'
+                             'remove-str',
+                        choices=valid_actions)
+    parser.add_argument('-i', '--input', help='Input file')
+    parser.add_argument('-o', '--output', help='Output file')
+    parser.add_argument('--instring', help='String to replace or remove')
+    parser.add_argument('--var', help='Autotools variable name to replace')
+    parser.add_argument('--outstring',
+                        help='New String to replace specified string or variable')
+    parser.add_argument('--removeprefix', help='Prefix of string to remove')
+
+    args = parser.parse_args()
+
+    input_string = ''
+    output_string = ''
+
+    # We must have action, input, output for all operations
+    check_required_args(args, ['action','input','output'])
+
+    # Build the arguments by the operation that is to be done,
+    # to be fed into replace()
+
+    # Get rid of prefixes from a string
+    if args.action == 'remove-prefix':
+        check_required_args(args, ['instring','removeprefix'])
+        warn_ignored_args(args, ['outstring','var'])
+        input_string = args.removeprefix + args.instring
+        output_string = args.instring
+
+    # Replace an m4-style variable (those surrounded by @...@)
+    if args.action == 'replace-var':
+        check_required_args(args, ['var','outstring'])
+        warn_ignored_args(args, ['instring','removeprefix'])
+        input_string = '@' + args.var + '@'
+        output_string = args.outstring
+
+    # Replace a string
+    if args.action == 'replace-str':
+        check_required_args(args, ['instring','outstring'])
+        warn_ignored_args(args, ['var','removeprefix'])
+        input_string = args.instring
+        output_string = args.outstring
+
+    # Remove a string
+    if args.action == 'remove-str':
+        check_required_args(args, ['instring'])
+        warn_ignored_args(args, ['var','outstring','removeprefix'])
+        input_string = args.instring
+        output_string = ''
+
+    replace(args.input, args.output, input_string, output_string)
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))