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Don't print the configuration header in help for empty configuration
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1 #include <cstring>
2 #include <msp/fs/stat.h>
3 #include <msp/fs/utils.h>
4 #include <msp/io/file.h>
5 #include <msp/io/print.h>
6 #include "builder.h"
7 #include "sourcepackage.h"
8 #include "tar.h"
9 #include "tarball.h"
10
11 using namespace std;
12 using namespace Msp;
13
14 Tar::Tar(Builder &b):
15         Tool(b, "TAR")
16 { }
17
18 Target *Tar::create_target(const list<Target *> &sources, const string &arg)
19 {
20         if(!sources.front()->get_package())
21                 throw invalid_argument("Tar::create_target");
22
23         TarBall *tarball = new TarBall(builder, *sources.front()->get_package(), arg);
24         for(list<Target *>::const_iterator i=sources.begin(); i!=sources.end(); ++i)
25                 tarball->add_dependency(**i);
26
27         tarball->set_tool(*this);
28
29         return tarball;
30 }
31
32 Task *Tar::run(const Target &target) const
33 {
34         const TarBall &tarball = dynamic_cast<const TarBall &>(target);
35         Worker *worker = new Worker(tarball);
36         return new InternalTask(worker);
37 }
38
39
40 Tar::Worker::Worker(const TarBall &tb):
41         tarball(tb)
42 { }
43
44 void Tar::Worker::main()
45 {
46         const FS::Path &pkg_src = tarball.get_package()->get_source_directory();
47         FS::Path basedir = FS::basepart(FS::basename(tarball.get_path()));
48
49         IO::File out(tarball.get_path().str(), IO::M_WRITE);
50         const Target::Dependencies &deps = tarball.get_dependencies();
51         for(Target::Dependencies::const_iterator i=deps.begin(); i!=deps.end(); ++i)
52         {
53                 FileTarget *ft = dynamic_cast<FileTarget *>(*i);
54                 if(!ft)
55                         continue;
56
57                 char buf[4096];
58                 memset(buf, 0, 512);
59
60                 string rel_path = (basedir/relative(ft->get_path(), pkg_src)).str();
61                 if(rel_path.size()>99)
62                 {
63                         IO::print("Can't store %s in tar archive - too long name\n", rel_path);
64                         status = Task::ERROR;
65                         return;
66                 }
67
68                 memcpy(buf, rel_path.data(), rel_path.size());
69
70                 FS::Stat st = FS::stat(ft->get_path());
71                 store_number(buf+100, 0666, 7);
72                 store_number(buf+108, 0, 7);
73                 store_number(buf+116, 0, 7);
74                 store_number(buf+124, st.get_size(), 11);
75                 store_number(buf+136, st.get_modify_time().to_unixtime(), 11);
76                 buf[156] = '0';
77
78                 memset(buf+148, ' ', 8);
79                 unsigned chk = 0;
80                 for(unsigned j=0; j<512; ++j)
81                         chk += static_cast<unsigned char>(buf[j]);
82                 store_number(buf+148, chk, 7);
83                 buf[155] = 0;
84
85                 out.write(buf, 512);
86                 IO::File in(ft->get_path().str());
87                 for(unsigned j=0; j<st.get_size(); j+=4096)
88                 {
89                         unsigned len = in.read(buf, 4096);
90                         len += ((~len)+1)&0777;
91                         out.write(buf, len);
92                 }
93         }
94
95         status = Task::SUCCESS;
96 }
97
98 void Tar::Worker::store_number(char *buf, unsigned value, unsigned length)
99 {
100         for(unsigned i=length; i--;)
101         {
102                 buf[i] = '0'+value%8;
103                 value /= 8;
104         }
105 }