vcs-svn: handle_node: use repo_read_path
svn-fe processes each commit in two stages: first decide on the correct content for all paths and export the relevant blobs, then export a commit with the result. But we can keep less state and simplify svn-fe a great deal by exporting the commit in one step: use 'inline' blobs for each path and remember nothing. This way, the repo_tree structure could be eliminated, and we would get support for incremental imports 'for free'. Reorganize handle_node along these lines. This is just a code cleanup; the changes in repo_tree and handle_revision will come later. [db: backported to apply without text delta support] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
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@ -201,13 +201,14 @@ static void handle_node(void)
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uint32_t mark = 0;
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const uint32_t type = node_ctx.type;
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const int have_props = node_ctx.propLength != LENGTH_UNKNOWN;
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const int have_text = node_ctx.textLength != LENGTH_UNKNOWN;
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if (node_ctx.text_delta)
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die("text deltas not supported");
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if (node_ctx.textLength != LENGTH_UNKNOWN)
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if (have_text)
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mark = next_blob_mark();
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if (node_ctx.action == NODEACT_DELETE) {
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if (mark || have_props || node_ctx.srcRev)
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if (have_text || have_props || node_ctx.srcRev)
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die("invalid dump: deletion node has "
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"copyfrom info, text, or properties");
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return repo_delete(node_ctx.dst);
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@ -221,13 +222,20 @@ static void handle_node(void)
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if (node_ctx.action == NODEACT_ADD)
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node_ctx.action = NODEACT_CHANGE;
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}
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if (mark && type == REPO_MODE_DIR)
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if (have_text && type == REPO_MODE_DIR)
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die("invalid dump: directories cannot have text attached");
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/*
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* Decide on the new content (mark) and mode (node_ctx.type).
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*/
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if (node_ctx.action == NODEACT_CHANGE && !~*node_ctx.dst) {
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if (type != REPO_MODE_DIR)
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die("invalid dump: root of tree is not a regular file");
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} else if (node_ctx.action == NODEACT_CHANGE) {
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uint32_t mode = repo_modify_path(node_ctx.dst, 0, mark);
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uint32_t mode;
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if (!have_text)
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mark = repo_read_path(node_ctx.dst);
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mode = repo_modify_path(node_ctx.dst, 0, 0);
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if (!mode)
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die("invalid dump: path to be modified is missing");
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if (mode == REPO_MODE_DIR && type != REPO_MODE_DIR)
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@ -236,22 +244,27 @@ static void handle_node(void)
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die("invalid dump: cannot modify a file into a directory");
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node_ctx.type = mode;
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} else if (node_ctx.action == NODEACT_ADD) {
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if (!mark && type != REPO_MODE_DIR)
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if (!have_text && type != REPO_MODE_DIR)
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die("invalid dump: adds node without text");
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repo_add(node_ctx.dst, type, mark);
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} else {
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die("invalid dump: Node-path block lacks Node-action");
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}
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/*
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* Adjust mode to reflect properties.
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*/
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if (have_props) {
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const uint32_t old_mode = node_ctx.type;
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if (!node_ctx.prop_delta)
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node_ctx.type = type;
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if (node_ctx.propLength)
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read_props();
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if (node_ctx.type != old_mode)
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repo_modify_path(node_ctx.dst, node_ctx.type, mark);
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}
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if (mark)
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/*
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* Save the result.
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*/
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repo_add(node_ctx.dst, node_ctx.type, mark);
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if (have_text)
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fast_export_blob(node_ctx.type, mark,
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node_ctx.textLength, &input);
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}
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