Instead of encoding formatting information inside the
corresponding XSLT stylesheet, use a Python script to reformat
the text appropriately based on a few simple markers.
Splitting the task between the XSLT stylesheet and the Python
script allows us to keep both parts very simple.
---
Changes from v1:
* Address review comments
- Avoid breaking 'make syntax-check'
Makefile.am | 17 +++++---
docs/Makefile.am | 2 +-
docs/reformat-news.py | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 124 insertions(+), 7 deletions(-)
create mode 100755 docs/reformat-news.py
diff --git a/Makefile.am b/Makefile.am
index 5c813b2..f30976f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -47,12 +47,17 @@ pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libvirt.pc libvirt-qemu.pc libvirt-lxc.pc libvirt-admin.pc
NEWS: $(srcdir)/docs/news.xml $(srcdir)/docs/news-ascii.xsl
- $(AM_V_GEN)if [ -x $(XSLTPROC) ] ; then \
- $(XSLTPROC) --nonet $(srcdir)/docs/news-ascii.xsl \
- $(srcdir)/docs/news.xml \
- | perl -0777 -pe 's/\n\n+$$/\n/' \
- | perl -pe 's/[ \t]+$$//' \
- > $@-t && mv $@-t $@ ; fi
+ $(AM_V_GEN) \
+ if [ -x $(XSLTPROC) ]; then \
+ $(XSLTPROC) --nonet \
+ $(srcdir)/docs/news-ascii.xsl \
+ $(srcdir)/docs/news.xml \
+ >$@-tmp \
+ || { rm -f $@-tmp; exit 1; }; \
+ $(srcdir)/docs/reformat-news.py $@-tmp >$@ \
+ || { rm -f $@-tmp; exit 1; }; \
+ rm -f $@-tmp; \
+ fi
$(top_srcdir)/HACKING: $(top_srcdir)/docs/hacking1.xsl \
$(top_srcdir)/docs/hacking2.xsl \
diff --git a/docs/Makefile.am b/docs/Makefile.am
index 8b34048..8d2e2b0 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -156,7 +156,7 @@ schemadir = $(pkgdatadir)/schemas
schema_DATA = $(wildcard $(srcdir)/schemas/*.rng)
EXTRA_DIST= \
- apibuild.py genaclperms.pl \
+ apibuild.py reformat-news.py genaclperms.pl \
site.xsl subsite.xsl newapi.xsl news-ascii.xsl news-html.xsl page.xsl \
hacking1.xsl hacking2.xsl wrapstring.xsl \
$(dot_html) $(dot_html_in) $(gif) $(apihtml) $(apipng) \
diff --git a/docs/reformat-news.py b/docs/reformat-news.py
new file mode 100755
index 0000000..e536205
--- /dev/null
+++ b/docs/reformat-news.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+
+# reformat-news.py: Reformat the NEWS file properly
+#
+# Copyright (C) 2017 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library. If not, see
+# <http://www.gnu.org/licenses/>.
+#
+# Authors:
+# Andrea Bolognani <abolo...@redhat.com>
+
+import sys
+
+COLUMNS = 80
+
+def reformat_with_indent(text, initial_indent, indent):
+
+ res = ""
+ line = initial_indent
+
+ for word in text.split():
+
+ # If adding one more word (plus a whitespace, plus a newline)
+ # to the current line would push us over the desired number
+ # of columns we start a new line instead
+ if len(line) + len(word) > (COLUMNS - 2):
+ res = res + line + "\n"
+ line = indent
+
+ # We need to take care when we've just started a new line,
+ # as we don't want to add any additional leading whitespace
+ # in that case
+ if line == indent or line == initial_indent:
+ line = line + word
+ else:
+ line = line + " " + word
+
+ # Append whatever's left
+ res = res + line + "\n"
+
+ return res
+
+
+def reformat(line):
+
+ # Empty lines don't need to be reformatted or even inspected
+ if len(line) == 0:
+ return "\n"
+
+ # For all non-empty lines, we decide the indentation level based
+ # on the first character
+ marker = line[0]
+
+ # Heading or release
+ if marker == '=' or marker == '#':
+ initial_indent = 0
+ indent = 2
+ # Section
+ elif marker == '*':
+ initial_indent = 2
+ indent = 4
+ # Change summary
+ elif marker == '-':
+ initial_indent = 4
+ indent = 6
+ # Change description
+ else:
+ initial_indent = 8
+ indent = 8
+
+ return reformat_with_indent(line, " " * initial_indent, " " * indent)
+
+
+def main(args):
+
+ if len(args) < 2:
+ sys.stdout.write("Usage: " + args[0] + " FILE\n")
+ sys.exit(1)
+
+ with open(args[1], 'r') as f:
+
+ process = False
+
+ for line in f:
+
+ # Odd occurrences of this specific marker cause the processing
+ # to start, even occurrences causes it to stop. In practice,
+ # this allows us to have some pre-formatted text at the
+ # beginning and end of the file
+ if line[0] == '=':
+ process = not process
+
+ if not process:
+ sys.stdout.write(line)
+ else:
+ sys.stdout.write(reformat(line.strip()))
+
+
+if __name__ == "__main__":
+ main(sys.argv)
--
2.7.4
--
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