| 1 | #ifndef __CSET_HH__␊ |
| 2 | #define __CSET_HH__␊ |
| 3 | ␊ |
| 4 | // Copyright (C) 2005 Nathaniel Smith <njs@pobox.com>␊ |
| 5 | //␊ |
| 6 | // This program is made available under the GNU GPL version 2.0 or␊ |
| 7 | // greater. See the accompanying file COPYING for details.␊ |
| 8 | //␊ |
| 9 | // This program is distributed WITHOUT ANY WARRANTY; without even the␊ |
| 10 | // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR␊ |
| 11 | // PURPOSE.␊ |
| 12 | ␊ |
| 13 | #include <map>␊ |
| 14 | #include <set>␊ |
| 15 | #include "vector.hh"␊ |
| 16 | ␊ |
| 17 | #include "numeric_vocab.hh"␊ |
| 18 | #include "paths.hh"␊ |
| 19 | #include "vocab.hh"␊ |
| 20 | #include "sanity.hh"␊ |
| 21 | ␊ |
| 22 | typedef std::map<attr_key, attr_value> attr_map_t;␊ |
| 23 | ␊ |
| 24 | // Virtual interface to a tree-of-files which you can edit␊ |
| 25 | // destructively; this may be the filesystem or an in-memory␊ |
| 26 | // representation (a roster / mfest).␊ |
| 27 | ␊ |
| 28 | typedef u32 node_id;␊ |
| 29 | ␊ |
| 30 | struct editable_tree␊ |
| 31 | {␊ |
| 32 | // Detaching existing nodes (for renaming or deleting)␊ |
| 33 | virtual node_id detach_node(file_path const & src) = 0;␊ |
| 34 | virtual void drop_detached_node(node_id nid) = 0;␊ |
| 35 | ␊ |
| 36 | // Attaching new nodes (via creation or as the tail end of renaming)␊ |
| 37 | virtual node_id create_dir_node() = 0;␊ |
| 38 | virtual node_id create_file_node(file_id const & content) = 0;␊ |
| 39 | virtual void attach_node(node_id nid, file_path const & dst) = 0;␊ |
| 40 | ␊ |
| 41 | // Modifying elements in-place␊ |
| 42 | virtual void apply_delta(file_path const & pth,␊ |
| 43 | file_id const & old_id,␊ |
| 44 | file_id const & new_id) = 0;␊ |
| 45 | virtual void clear_attr(file_path const & pth,␊ |
| 46 | attr_key const & name) = 0;␊ |
| 47 | virtual void set_attr(file_path const & pth,␊ |
| 48 | attr_key const & name,␊ |
| 49 | attr_value const & val) = 0;␊ |
| 50 | ␊ |
| 51 | virtual void commit() = 0;␊ |
| 52 | ␊ |
| 53 | virtual ~editable_tree() {}␊ |
| 54 | };␊ |
| 55 | ␊ |
| 56 | ␊ |
| 57 | // In-memory representation of a change set.␊ |
| 58 | ␊ |
| 59 | struct cset␊ |
| 60 | {␊ |
| 61 | // Deletions.␊ |
| 62 | std::set<file_path> nodes_deleted;␊ |
| 63 | ␊ |
| 64 | // Additions.␊ |
| 65 | std::set<file_path> dirs_added;␊ |
| 66 | std::map<file_path, file_id> files_added;␊ |
| 67 | ␊ |
| 68 | // Pure renames.␊ |
| 69 | std::map<file_path, file_path> nodes_renamed;␊ |
| 70 | ␊ |
| 71 | // Pure deltas.␊ |
| 72 | std::map<file_path, std::pair<file_id, file_id> > deltas_applied;␊ |
| 73 | ␊ |
| 74 | // Attribute changes.␊ |
| 75 | std::set<std::pair<file_path, attr_key> > attrs_cleared;␊ |
| 76 | std::map<std::pair<file_path, attr_key>, attr_value> attrs_set;␊ |
| 77 | ␊ |
| 78 | bool operator==(cset const & other) const␊ |
| 79 | {␊ |
| 80 | return nodes_deleted == other.nodes_deleted␊ |
| 81 | && dirs_added == other.dirs_added␊ |
| 82 | && files_added == other.files_added␊ |
| 83 | && nodes_renamed == other.nodes_renamed␊ |
| 84 | && deltas_applied == other.deltas_applied␊ |
| 85 | && attrs_cleared == other.attrs_cleared␊ |
| 86 | && attrs_set == other.attrs_set␊ |
| 87 | ;␊ |
| 88 | }␊ |
| 89 | ␊ |
| 90 | void apply_to(editable_tree & t) const;␊ |
| 91 | bool empty() const;␊ |
| 92 | void clear();␊ |
| 93 | };␊ |
| 94 | ␊ |
| 95 | inline file_path const &␊ |
| 96 | delta_entry_path(std::map<file_path, std::pair<file_id, file_id> >::const_iterator i)␊ |
| 97 | {␊ |
| 98 | return i->first;␊ |
| 99 | }␊ |
| 100 | ␊ |
| 101 | inline file_id const &␊ |
| 102 | delta_entry_src(std::map<file_path, std::pair<file_id, file_id> >::const_iterator i)␊ |
| 103 | {␊ |
| 104 | return i->second.first;␊ |
| 105 | }␊ |
| 106 | ␊ |
| 107 | inline file_id const &␊ |
| 108 | delta_entry_dst(std::map<file_path, std::pair<file_id, file_id> >::const_iterator i)␊ |
| 109 | {␊ |
| 110 | return i->second.second;␊ |
| 111 | }␊ |
| 112 | ␊ |
| 113 | ␊ |
| 114 | namespace basic_io { struct printer; struct parser; }␊ |
| 115 | ␊ |
| 116 | void␊ |
| 117 | print_cset(basic_io::printer & printer,␊ |
| 118 | cset const & cs);␊ |
| 119 | ␊ |
| 120 | void␊ |
| 121 | write_cset(cset const & cs, data & dat);␊ |
| 122 | ␊ |
| 123 | void␊ |
| 124 | parse_cset(basic_io::parser & parser,␊ |
| 125 | cset & cs);␊ |
| 126 | ␊ |
| 127 | void␊ |
| 128 | read_cset(data const & dat, cset & cs);␊ |
| 129 | ␊ |
| 130 | template <> void␊ |
| 131 | dump(cset const & cs, std::string & out);␊ |
| 132 | ␊ |
| 133 | // Local Variables:␊ |
| 134 | // mode: C++␊ |
| 135 | // fill-column: 76␊ |
| 136 | // c-file-style: "gnu"␊ |
| 137 | // indent-tabs-mode: nil␊ |
| 138 | // End:␊ |
| 139 | // vim: et:sw=2:sts=2:ts=2:cino=>2s,{s,\:s,+s,t0,g0,^-2,e-2,n-2,p2s,(0,=s:␊ |
| 140 | ␊ |
| 141 | #endif // __CSET_HH__␊ |
