73 lines
1.7 KiB
C
73 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 lock_file lock_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_lock_file_for_update(&lock_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_lock_file(&lock_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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