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authorMichael Vogt <michael.vogt@ubuntu.com>2010-11-15 12:12:56 +0100
committerMichael Vogt <michael.vogt@ubuntu.com>2010-11-15 12:12:56 +0100
commita4c404301df135bea81f23b944dc6e1967f9ca85 (patch)
treee4e9beea56855f6f10e30bb3a269aacbc0e9848d /cmdline/apt-get.cc
parentfd8bb61d2945d2e2f19f0e0a753129235717a9f3 (diff)
initial apt-get changelog implementation, not quite ready yet (need to get rid of tmpnam
Diffstat (limited to 'cmdline/apt-get.cc')
-rw-r--r--cmdline/apt-get.cc99
1 files changed, 99 insertions, 0 deletions
diff --git a/cmdline/apt-get.cc b/cmdline/apt-get.cc
index 8efcd0e2e..72c1ef0b0 100644
--- a/cmdline/apt-get.cc
+++ b/cmdline/apt-get.cc
@@ -2733,6 +2733,104 @@ bool DoBuildDep(CommandLine &CmdL)
return true;
}
/*}}}*/
+// DownloadChangelog - Download the changelog /*{{{*/
+// ---------------------------------------------------------------------
+string DownloadChangelog(CacheFile &CacheFile, pkgAcquire &Fetcher, pkgCache::VerIterator V)
+{
+ string uri;
+ string srcpkg;
+ string prefix;
+ string descr;
+ string src_section;
+ string verstr;
+
+ // data structures we need
+ pkgRecords Recs(CacheFile);
+ pkgCache::PkgIterator Pkg = V.ParentPkg();
+ pkgRecords::Parser &rec=Recs.Lookup(V.FileList());
+
+ // build uri
+ srcpkg = rec.SourcePkg().empty() ? Pkg.Name() : rec.SourcePkg();
+ strprintf(descr, _("Changelog for %s"), srcpkg.c_str());
+ // FIXME: we actually need the source section here
+ src_section= Pkg.Section();
+ if(src_section.find('/')!=src_section.npos)
+ src_section=string(src_section, 0, src_section.find('/'));
+ else
+ src_section="main";
+
+ prefix+=srcpkg[0];
+ if(srcpkg.size()>3 && srcpkg[0]=='l' && srcpkg[1]=='i' && srcpkg[2]=='b')
+ prefix=std::string("lib")+srcpkg[3];
+
+ verstr = V.VerStr();
+ if(verstr.find(':')!=verstr.npos)
+ verstr=string(verstr, verstr.find(':')+1);
+
+ strprintf(uri, "http://packages.debian.org/changelogs/pool/%s/%s/%s/%s_%s/changelog", src_section.c_str(), prefix.c_str(), srcpkg.c_str(), srcpkg.c_str(), verstr.c_str());
+
+ AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
+ Fetcher.Setup(&Stat);
+
+ // temp file
+ string targetfile = tmpnam(strdup("apt-changelog-XXXXXX"));
+ new pkgAcqFile(&Fetcher, uri, "", 0, descr, srcpkg, "ignore", targetfile);
+
+ // get it
+ int res = Fetcher.Run();
+ if (FileExists(targetfile))
+ return targetfile;
+
+ // error
+ return "";
+}
+ /*}}}*/
+// DisplayFileInPager - Display File with pager /*{{{*/
+void DisplayFileInPager(string filename)
+{
+ pid_t Process = ExecFork();
+ if (Process == 0)
+ {
+ const char *Args[3];
+ Args[0] = "/usr/bin/sensible-pager";
+ Args[1] = filename.c_str();
+ Args[2] = 0;
+ execvp(Args[0],(char **)Args);
+ exit(100);
+ }
+
+ // Wait for the subprocess
+ ExecWait(Process, "sensible-pager", false);
+}
+ /*}}}*/
+// DoChangelog - Get changelog from the command line /*{{{*/
+// ---------------------------------------------------------------------
+bool DoChangelog(CommandLine &CmdL)
+{
+ CacheFile Cache;
+ if (Cache.ReadOnlyOpen() == false)
+ return false;
+
+ APT::CacheSetHelper helper(c0out);
+ APT::VersionSet verset = APT::VersionSet::FromCommandLine(Cache,
+ CmdL.FileList + 1, APT::VersionSet::CANDIDATE, helper);
+ pkgAcquire Fetcher;
+
+ if (verset.empty() == true)
+ return false;
+ for (APT::VersionSet::const_iterator Ver = verset.begin();
+ Ver != verset.end();
+ ++Ver)
+ {
+ string changelogfile = DownloadChangelog(Cache, Fetcher, Ver);
+ if (changelogfile.size() > 0)
+ {
+ DisplayFileInPager(changelogfile);
+ unlink(changelogfile.c_str());
+ }
+ }
+}
+ /*}}}*/
// DoMoo - Never Ask, Never Tell /*{{{*/
// ---------------------------------------------------------------------
/* */
@@ -2923,6 +3021,7 @@ int main(int argc,const char *argv[]) /*{{{*/
{"autoclean",&DoAutoClean},
{"check",&DoCheck},
{"source",&DoSource},
+ {"changelog",&DoChangelog},
{"moo",&DoMoo},
{"help",&ShowHelp},
{0,0}};