[nodejs] add %nodejs_fixdep macro

[T.C. Hollingsworth]

commit 753bbecb1db015cbd418937f7036b5f3052980a3
Author: T.C. Hollingsworth <tchollingsworth at gmail.com>
Date:   Tue Jan 1 18:01:34 2013 -0700

    add %nodejs_fixdep macro

 macros.nodejs |    9 ++++++++-
 nodejs-fixdep |   55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 nodejs.spec   |    4 ++++
 3 files changed, 67 insertions(+), 1 deletions(-)
---
diff --git a/macros.nodejs b/macros.nodejs
index 9507ada..a7d431f 100644
--- a/macros.nodejs
+++ b/macros.nodejs
@@ -9,4 +9,11 @@
 
 # symlink dependencies so `npm link` works
 # this should be run in every module's %%install section
-%nodejs_symlink_deps %{_rpmconfigdir}/nodejs-symlink-deps %{nodejs_sitelib}
\ No newline at end of file
+%nodejs_symlink_deps %{_rpmconfigdir}/nodejs-symlink-deps %{nodejs_sitelib}
+
+# patch package.json to fix a dependency
+# see `man npm-json` for details on writing dependencies for package.json files
+# e.g. `%%nodejs_fixdep frobber` makes any version of frobber do
+#      `%%nodejs_fixdep frobber '>1.0'` requires frobber > 1.0
+#      `%%nodejs_fixdep -r frobber removes the frobber dep
+%nodejs_fixdep %{_rpmconfigdir}/nodejs-fixdep
\ No newline at end of file
diff --git a/nodejs-fixdep b/nodejs-fixdep
new file mode 100755
index 0000000..087cdf3
--- /dev/null
+++ b/nodejs-fixdep
@@ -0,0 +1,55 @@
+#!/usr/bin/python
+
+"""Modify a dependency listed in a package.json file"""
+
+# Copyright 2013 T.C. Hollingsworth <tchollingsworth at gmail.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+import json
+import os
+import shutil
+import sys
+
+if not os.path.exists('package.json'):
+    shutil.copy2('package.json', 'package.json~')
+
+md = json.load(open('package.json'))
+
+if not 'dependencies':
+    sys.stderr.write("No dependencies listed in this module's package.json\n")
+    sys.exit(2)
+
+if sys.argv[1] == '-r':
+    dep = sys.argv[2]
+    del md['dependencies'][dep]
+else:
+    dep = sys.argv[1]
+
+    if len(sys.argv) > 2:
+        ver = sys.argv[2]
+    else:
+        ver = '*'
+
+    md['dependencies'][dep] = ver
+
+fh = open('package.json', 'w')
+data = json.JSONEncoder(indent=4).encode(md)
+fh.write(data)
+fh.close()
diff --git a/nodejs.spec b/nodejs.spec
index d22ff96..b47409c 100644
--- a/nodejs.spec
+++ b/nodejs.spec
@@ -11,6 +11,7 @@ Source2: nodejs.attr
 Source3: nodejs.prov
 Source4: nodejs.req
 Source5: nodejs-symlink-deps
+Source6: nodejs-fixdep
 BuildRequires: v8-devel
 BuildRequires: http-parser-devel >= 2.0
 BuildRequires: libuv-devel >= %{version}
@@ -114,6 +115,7 @@ install -Dpm0644 %{SOURCE2} %{buildroot}%{_rpmconfigdir}/fileattrs/nodejs.attr
 install -pm0755 %{SOURCE3} %{buildroot}%{_rpmconfigdir}/nodejs.prov
 install -pm0755 %{SOURCE4} %{buildroot}%{_rpmconfigdir}/nodejs.req
 install -pm0755 %{SOURCE5} %{buildroot}%{_rpmconfigdir}/nodejs-symlink-deps
+install -pm0755 %{SOURCE6} %{buildroot}%{_rpmconfigdir}/nodejs-fixdep
 
 #install documentation
 mkdir -p %{buildroot}%{_defaultdocdir}/%{name}-docs-%{version}/html
@@ -138,6 +140,8 @@ rm -f %{_defaultdocdir}/%{name}-docs-%{version}/html/nodejs.1
 - new upstream release 0.9.5
 - provide nodejs-devel for the moment
 - fix minor bugs in RPM magic
+- add nodejs_fixdep macro so packagers can easily adjust dependencies in
+  package.json files
 
 * Wed Dec 26 2012 T.C. Hollingsworth <tchollingsworth at gmail.com> - 0.9.4-1
 - new upstream release 0.9.4