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https://github.com/git/git
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723b7a2789
Rely on fast-import for information about previous revs. This requires always setting up backward flow of information, even for v2 dumps. On the plus side, it simplifies the code by quite a bit and opens the door to further simplifications. [db: adjusted to support final version of the cat-blob patch] [jn: avoiding hard-coding git's name for the empty tree for portability to other backends] 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>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* Licensed under a two-clause BSD-style license.
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* See LICENSE for details.
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*/
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#include "git-compat-util.h"
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#include "strbuf.h"
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#include "repo_tree.h"
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#include "fast_export.h"
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const char *repo_read_path(const uint32_t *path)
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{
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int err;
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uint32_t dummy;
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static struct strbuf buf = STRBUF_INIT;
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strbuf_reset(&buf);
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err = fast_export_ls(REPO_MAX_PATH_DEPTH, path, &dummy, &buf);
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if (err) {
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if (errno != ENOENT)
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die_errno("BUG: unexpected fast_export_ls error");
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return NULL;
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}
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return buf.buf;
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}
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uint32_t repo_read_mode(const uint32_t *path)
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{
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int err;
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uint32_t result;
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static struct strbuf dummy = STRBUF_INIT;
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strbuf_reset(&dummy);
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err = fast_export_ls(REPO_MAX_PATH_DEPTH, path, &result, &dummy);
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if (err) {
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if (errno != ENOENT)
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die_errno("BUG: unexpected fast_export_ls error");
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/* Treat missing paths as directories. */
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return REPO_MODE_DIR;
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}
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return result;
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}
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void repo_copy(uint32_t revision, const uint32_t *src, const uint32_t *dst)
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{
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int err;
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uint32_t mode;
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static struct strbuf data = STRBUF_INIT;
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strbuf_reset(&data);
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err = fast_export_ls_rev(revision, REPO_MAX_PATH_DEPTH, src, &mode, &data);
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if (err) {
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if (errno != ENOENT)
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die_errno("BUG: unexpected fast_export_ls_rev error");
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fast_export_delete(REPO_MAX_PATH_DEPTH, dst);
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return;
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}
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fast_export_modify(REPO_MAX_PATH_DEPTH, dst, mode, data.buf);
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}
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void repo_delete(uint32_t *path)
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{
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fast_export_delete(REPO_MAX_PATH_DEPTH, path);
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}
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