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The "bind" commit can express an aggregation of multiple projects into a single commit. In such an organization, there would be one project, root of whose tree object is at the same level of the root of the aggregated projects, and other projects have their toplevel in separate subdirectories. Let's call that root level project the "primary project", and call other ones just "subprojects". You would first read-tree the primary project, and then graft the subprojects under their appropriate location using read-tree --prefix=<subdir>/ repeatedly. To write out a tree object from such an index for a subproject, write-tree --prefix=<subdir>/ is used. Signed-off-by: Junio C Hamano <junkio@cox.net>
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "tree.h"
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#include "cache-tree.h"
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static int missing_ok = 0;
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static char *prefix = NULL;
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static const char write_tree_usage[] =
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"git-write-tree [--missing-ok] [--prefix=<prefix>/]";
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static struct cache_file cache_file;
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int main(int argc, char **argv)
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{
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int entries, was_valid, newfd;
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setup_git_directory();
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newfd = hold_index_file_for_update(&cache_file, get_index_file());
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entries = read_cache();
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while (1 < argc) {
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char *arg = argv[1];
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if (!strcmp(arg, "--missing-ok"))
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missing_ok = 1;
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else if (!strncmp(arg, "--prefix=", 9))
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prefix = arg + 9;
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else
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die(write_tree_usage);
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argc--; argv++;
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}
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if (argc > 2)
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die("too many options");
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if (entries < 0)
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die("git-write-tree: error reading cache");
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if (!active_cache_tree)
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active_cache_tree = cache_tree();
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was_valid = cache_tree_fully_valid(active_cache_tree);
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if (!was_valid) {
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if (cache_tree_update(active_cache_tree,
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active_cache, active_nr,
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missing_ok, 0) < 0)
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die("git-write-tree: error building trees");
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if (0 <= newfd) {
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if (!write_cache(newfd, active_cache, active_nr))
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commit_index_file(&cache_file);
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}
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/* Not being able to write is fine -- we are only interested
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* in updating the cache-tree part, and if the next caller
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* ends up using the old index with unupdated cache-tree part
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* it misses the work we did here, but that is just a
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* performance penalty and not a big deal.
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*/
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}
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if (prefix) {
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struct cache_tree *subtree =
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cache_tree_find(active_cache_tree, prefix);
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printf("%s\n", sha1_to_hex(subtree->sha1));
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}
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else
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printf("%s\n", sha1_to_hex(active_cache_tree->sha1));
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return 0;
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}
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