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// changelog_parse.cc
//
// Copyright (C) 2005 Daniel Burrows
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
//
// At the moment this code uses parsechangelog to convert changelogs
// into something easier to read.
#include "changelog_parse.h"
#include "desc_parse.h"
#include <apt-pkg/fileutl.h>
#include <apt-pkg/pkgsystem.h>
#include <apt-pkg/tagfile.h>
#include <apt-pkg/version.h>
#include <generic/util/temp.h>
#include <generic/util/util.h>
#include <vscreen/fragment.h>
#include <vscreen/transcode.h>
static
fragment *change_text_fragment(const std::string &s)
{
std::vector<fragment *> lines;
std::string::size_type start = 0;
std::string::size_type next_nl;
do
{
next_nl = s.find('\n', start);
if(s[start] == ' ')
++start;
if(next_nl == start + 1 && s[start] == '.')
{
lines.push_back(newline_fragment());
start = next_nl + 1;
continue;
}
std::string this_line;
if(next_nl != std::string::npos)
this_line.assign(s, start, next_nl - start);
else
this_line.assign(s, start, std::string::npos);
size_t first_nonspace = 0;
while(first_nonspace < this_line.size() && isspace(this_line[first_nonspace]))
++first_nonspace;
bool has_bullet = false;
if(first_nonspace < this_line.size())
switch(this_line[first_nonspace])
{
case '*':
case '+':
case '-':
has_bullet = true;
break;
}
if(has_bullet)
lines.push_back(hardwrapbox(fragf("%s%F%s%n",
std::string(this_line, 0, first_nonspace).c_str(),
text_fragment(std::string(this_line, first_nonspace, 1).c_str(),
get_style("Bullet")),
std::string(this_line, first_nonspace + 1).c_str())));
else
lines.push_back(hardwrapbox(fragf("%s%n", this_line.c_str())));
start = next_nl + 1;
} while(next_nl != std::string::npos);
return sequence_fragment(lines);
}
static
fragment *parse_predigested_changelog(const temp::name &digest,
const std::string &curver)
{
FileFd digestfd(digest.get_name(), FileFd::ReadOnly);
if(!digestfd.IsOpen())
return NULL;
else
{
pkgTagFile tagfile(&digestfd);
pkgTagSection sec;
std::vector<fragment *> fragments;
bool first = true;
while(tagfile.Step(sec))
{
std::string version(sec.FindS("Version"));
std::string changes(sec.FindS("Changes"));
std::string maintainer(sec.FindS("Maintainer"));
std::string date(sec.FindS("Date"));
fragment *f = fragf(first ? "%F%F" : "%n%F%F",
change_text_fragment(changes),
hardwrapbox(fragf("%n -- %s %s",
maintainer.c_str(),
date.c_str())));
first = false;
if(!curver.empty() && _system->VS->CmpVersion(version, curver) > 0)
{
style s = get_style("ChangelogNewerVersion");
fragments.push_back(style_fragment(f, s));
}
else
fragments.push_back(f);
}
return sequence_fragment(fragments);
}
}
static
temp::name digest_changelog(const temp::name &changelog)
{
temp::name rval(changelog.get_parent(), "parsedchangelog");
if(system(ssprintf("parsechangelog --all --format rfc822 -l %s > %s 2> /dev/null",
changelog.get_name().c_str(),
rval.get_name().c_str()).c_str()) == 0)
return rval;
else
return temp::name();
}
fragment *make_changelog_fragment(const temp::name &file,
const std::string &curver)
{
temp::name digested = digest_changelog(file);
if(!digested.valid())
return NULL;
else
return parse_predigested_changelog(digested, curver);
}
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