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![Junio C Hamano](/assets/img/avatar_default.png)
Split key function and data structure definitions out of cache.h to new header files and adjust the users. * en/header-split-cleanup: csum-file.h: remove unnecessary inclusion of cache.h write-or-die.h: move declarations for write-or-die.c functions from cache.h treewide: remove cache.h inclusion due to setup.h changes setup.h: move declarations for setup.c functions from cache.h treewide: remove cache.h inclusion due to environment.h changes environment.h: move declarations for environment.c functions from cache.h treewide: remove unnecessary includes of cache.h wrapper.h: move declarations for wrapper.c functions from cache.h path.h: move function declarations for path.c functions from cache.h cache.h: remove expand_user_path() abspath.h: move absolute path functions from cache.h environment: move comment_line_char from cache.h treewide: remove unnecessary cache.h inclusion from several sources treewide: remove unnecessary inclusion of gettext.h treewide: be explicit about dependence on gettext.h treewide: remove unnecessary cache.h inclusion from a few headers
1296 lines
34 KiB
C
1296 lines
34 KiB
C
/*
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* "git fast-export" builtin command
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*
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* Copyright (C) 2007 Johannes E. Schindelin
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*/
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#include "builtin.h"
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#include "cache.h"
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#include "config.h"
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#include "gettext.h"
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#include "hex.h"
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#include "refs.h"
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#include "refspec.h"
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#include "object-store.h"
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#include "commit.h"
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#include "object.h"
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#include "tag.h"
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#include "diff.h"
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#include "diffcore.h"
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#include "log-tree.h"
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#include "revision.h"
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#include "decorate.h"
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#include "string-list.h"
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#include "utf8.h"
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#include "parse-options.h"
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#include "quote.h"
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#include "remote.h"
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#include "blob.h"
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#include "commit-slab.h"
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static const char *fast_export_usage[] = {
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N_("git fast-export [<rev-list-opts>]"),
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NULL
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};
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static int progress;
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static enum { SIGNED_TAG_ABORT, VERBATIM, WARN, WARN_STRIP, STRIP } signed_tag_mode = SIGNED_TAG_ABORT;
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static enum { TAG_FILTERING_ABORT, DROP, REWRITE } tag_of_filtered_mode = TAG_FILTERING_ABORT;
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static enum { REENCODE_ABORT, REENCODE_YES, REENCODE_NO } reencode_mode = REENCODE_ABORT;
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static int fake_missing_tagger;
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static int use_done_feature;
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static int no_data;
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static int full_tree;
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static int reference_excluded_commits;
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static int show_original_ids;
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static int mark_tags;
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static struct string_list extra_refs = STRING_LIST_INIT_NODUP;
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static struct string_list tag_refs = STRING_LIST_INIT_NODUP;
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static struct refspec refspecs = REFSPEC_INIT_FETCH;
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static int anonymize;
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static struct hashmap anonymized_seeds;
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static struct revision_sources revision_sources;
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static int parse_opt_signed_tag_mode(const struct option *opt,
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const char *arg, int unset)
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{
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if (unset || !strcmp(arg, "abort"))
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signed_tag_mode = SIGNED_TAG_ABORT;
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else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore"))
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signed_tag_mode = VERBATIM;
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else if (!strcmp(arg, "warn"))
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signed_tag_mode = WARN;
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else if (!strcmp(arg, "warn-strip"))
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signed_tag_mode = WARN_STRIP;
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else if (!strcmp(arg, "strip"))
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signed_tag_mode = STRIP;
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else
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return error("Unknown signed-tags mode: %s", arg);
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return 0;
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}
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static int parse_opt_tag_of_filtered_mode(const struct option *opt,
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const char *arg, int unset)
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{
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if (unset || !strcmp(arg, "abort"))
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tag_of_filtered_mode = TAG_FILTERING_ABORT;
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else if (!strcmp(arg, "drop"))
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tag_of_filtered_mode = DROP;
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else if (!strcmp(arg, "rewrite"))
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tag_of_filtered_mode = REWRITE;
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else
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return error("Unknown tag-of-filtered mode: %s", arg);
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return 0;
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}
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static int parse_opt_reencode_mode(const struct option *opt,
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const char *arg, int unset)
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{
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if (unset) {
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reencode_mode = REENCODE_ABORT;
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return 0;
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}
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switch (git_parse_maybe_bool(arg)) {
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case 0:
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reencode_mode = REENCODE_NO;
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break;
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case 1:
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reencode_mode = REENCODE_YES;
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break;
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default:
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if (!strcasecmp(arg, "abort"))
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reencode_mode = REENCODE_ABORT;
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else
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return error("Unknown reencoding mode: %s", arg);
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}
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return 0;
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}
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static struct decoration idnums;
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static uint32_t last_idnum;
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struct anonymized_entry {
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struct hashmap_entry hash;
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char *anon;
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const char orig[FLEX_ARRAY];
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};
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struct anonymized_entry_key {
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struct hashmap_entry hash;
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const char *orig;
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size_t orig_len;
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};
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static int anonymized_entry_cmp(const void *cmp_data UNUSED,
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const struct hashmap_entry *eptr,
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const struct hashmap_entry *entry_or_key,
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const void *keydata)
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{
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const struct anonymized_entry *a, *b;
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a = container_of(eptr, const struct anonymized_entry, hash);
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if (keydata) {
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const struct anonymized_entry_key *key = keydata;
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int equal = !strncmp(a->orig, key->orig, key->orig_len) &&
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!a->orig[key->orig_len];
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return !equal;
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}
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b = container_of(entry_or_key, const struct anonymized_entry, hash);
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return strcmp(a->orig, b->orig);
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}
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static struct anonymized_entry *add_anonymized_entry(struct hashmap *map,
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unsigned hash,
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const char *orig, size_t len,
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char *anon)
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{
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struct anonymized_entry *ret, *old;
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if (!map->cmpfn)
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hashmap_init(map, anonymized_entry_cmp, NULL, 0);
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FLEX_ALLOC_MEM(ret, orig, orig, len);
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hashmap_entry_init(&ret->hash, hash);
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ret->anon = anon;
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old = hashmap_put_entry(map, ret, hash);
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if (old) {
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free(old->anon);
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free(old);
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}
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return ret;
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}
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/*
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* Basically keep a cache of X->Y so that we can repeatedly replace
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* the same anonymized string with another. The actual generation
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* is farmed out to the generate function.
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*/
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static const char *anonymize_str(struct hashmap *map,
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char *(*generate)(void),
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const char *orig, size_t len)
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{
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struct anonymized_entry_key key;
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struct anonymized_entry *ret;
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hashmap_entry_init(&key.hash, memhash(orig, len));
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key.orig = orig;
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key.orig_len = len;
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/* First check if it's a token the user configured manually... */
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ret = hashmap_get_entry(&anonymized_seeds, &key, hash, &key);
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/* ...otherwise check if we've already seen it in this context... */
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if (!ret)
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ret = hashmap_get_entry(map, &key, hash, &key);
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/* ...and finally generate a new mapping if necessary */
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if (!ret)
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ret = add_anonymized_entry(map, key.hash.hash,
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orig, len, generate());
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return ret->anon;
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}
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/*
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* We anonymize each component of a path individually,
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* so that paths a/b and a/c will share a common root.
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* The paths are cached via anonymize_mem so that repeated
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* lookups for "a" will yield the same value.
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*/
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static void anonymize_path(struct strbuf *out, const char *path,
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struct hashmap *map,
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char *(*generate)(void))
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{
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while (*path) {
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const char *end_of_component = strchrnul(path, '/');
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size_t len = end_of_component - path;
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const char *c = anonymize_str(map, generate, path, len);
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strbuf_addstr(out, c);
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path = end_of_component;
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if (*path)
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strbuf_addch(out, *path++);
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}
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}
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static inline void *mark_to_ptr(uint32_t mark)
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{
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return (void *)(uintptr_t)mark;
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}
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static inline uint32_t ptr_to_mark(void * mark)
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{
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return (uint32_t)(uintptr_t)mark;
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}
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static inline void mark_object(struct object *object, uint32_t mark)
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{
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add_decoration(&idnums, object, mark_to_ptr(mark));
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}
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static inline void mark_next_object(struct object *object)
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{
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mark_object(object, ++last_idnum);
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}
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static int get_object_mark(struct object *object)
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{
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void *decoration = lookup_decoration(&idnums, object);
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if (!decoration)
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return 0;
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return ptr_to_mark(decoration);
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}
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static struct commit *rewrite_commit(struct commit *p)
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{
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for (;;) {
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if (p->parents && p->parents->next)
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break;
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if (p->object.flags & UNINTERESTING)
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break;
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if (!(p->object.flags & TREESAME))
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break;
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if (!p->parents)
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return NULL;
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p = p->parents->item;
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}
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return p;
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}
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static void show_progress(void)
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{
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static int counter = 0;
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if (!progress)
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return;
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if ((++counter % progress) == 0)
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printf("progress %d objects\n", counter);
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}
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/*
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* Ideally we would want some transformation of the blob data here
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* that is unreversible, but would still be the same size and have
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* the same data relationship to other blobs (so that we get the same
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* delta and packing behavior as the original). But the first and last
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* requirements there are probably mutually exclusive, so let's take
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* the easy way out for now, and just generate arbitrary content.
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*
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* There's no need to cache this result with anonymize_mem, since
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* we already handle blob content caching with marks.
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*/
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static char *anonymize_blob(unsigned long *size)
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{
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static int counter;
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struct strbuf out = STRBUF_INIT;
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strbuf_addf(&out, "anonymous blob %d", counter++);
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*size = out.len;
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return strbuf_detach(&out, NULL);
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}
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static void export_blob(const struct object_id *oid)
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{
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unsigned long size;
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enum object_type type;
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char *buf;
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struct object *object;
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int eaten;
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if (no_data)
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return;
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if (is_null_oid(oid))
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return;
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object = lookup_object(the_repository, oid);
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if (object && object->flags & SHOWN)
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return;
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if (anonymize) {
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buf = anonymize_blob(&size);
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object = (struct object *)lookup_blob(the_repository, oid);
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eaten = 0;
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} else {
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buf = repo_read_object_file(the_repository, oid, &type, &size);
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if (!buf)
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die("could not read blob %s", oid_to_hex(oid));
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if (check_object_signature(the_repository, oid, buf, size,
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type) < 0)
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die("oid mismatch in blob %s", oid_to_hex(oid));
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object = parse_object_buffer(the_repository, oid, type,
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size, buf, &eaten);
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}
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if (!object)
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die("Could not read blob %s", oid_to_hex(oid));
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mark_next_object(object);
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printf("blob\nmark :%"PRIu32"\n", last_idnum);
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if (show_original_ids)
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printf("original-oid %s\n", oid_to_hex(oid));
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printf("data %"PRIuMAX"\n", (uintmax_t)size);
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if (size && fwrite(buf, size, 1, stdout) != 1)
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die_errno("could not write blob '%s'", oid_to_hex(oid));
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printf("\n");
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show_progress();
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object->flags |= SHOWN;
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if (!eaten)
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free(buf);
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}
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static int depth_first(const void *a_, const void *b_)
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{
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const struct diff_filepair *a = *((const struct diff_filepair **)a_);
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const struct diff_filepair *b = *((const struct diff_filepair **)b_);
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const char *name_a, *name_b;
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int len_a, len_b, len;
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int cmp;
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name_a = a->one ? a->one->path : a->two->path;
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name_b = b->one ? b->one->path : b->two->path;
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len_a = strlen(name_a);
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len_b = strlen(name_b);
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len = (len_a < len_b) ? len_a : len_b;
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/* strcmp will sort 'd' before 'd/e', we want 'd/e' before 'd' */
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cmp = memcmp(name_a, name_b, len);
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if (cmp)
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return cmp;
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cmp = len_b - len_a;
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if (cmp)
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return cmp;
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/*
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* Move 'R'ename entries last so that all references of the file
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* appear in the output before it is renamed (e.g., when a file
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* was copied and renamed in the same commit).
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*/
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return (a->status == 'R') - (b->status == 'R');
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}
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static void print_path_1(const char *path)
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{
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int need_quote = quote_c_style(path, NULL, NULL, 0);
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if (need_quote)
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quote_c_style(path, NULL, stdout, 0);
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else if (strchr(path, ' '))
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printf("\"%s\"", path);
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else
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printf("%s", path);
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}
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static char *anonymize_path_component(void)
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{
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static int counter;
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struct strbuf out = STRBUF_INIT;
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strbuf_addf(&out, "path%d", counter++);
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return strbuf_detach(&out, NULL);
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}
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static void print_path(const char *path)
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{
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if (!anonymize)
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print_path_1(path);
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else {
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static struct hashmap paths;
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static struct strbuf anon = STRBUF_INIT;
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anonymize_path(&anon, path, &paths, anonymize_path_component);
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print_path_1(anon.buf);
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strbuf_reset(&anon);
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}
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}
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static char *generate_fake_oid(void)
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{
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static uint32_t counter = 1; /* avoid null oid */
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const unsigned hashsz = the_hash_algo->rawsz;
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struct object_id oid;
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char *hex = xmallocz(GIT_MAX_HEXSZ);
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oidclr(&oid);
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put_be32(oid.hash + hashsz - 4, counter++);
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return oid_to_hex_r(hex, &oid);
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}
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static const char *anonymize_oid(const char *oid_hex)
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{
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static struct hashmap objs;
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size_t len = strlen(oid_hex);
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return anonymize_str(&objs, generate_fake_oid, oid_hex, len);
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}
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static void show_filemodify(struct diff_queue_struct *q,
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struct diff_options *options UNUSED, void *data)
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{
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int i;
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struct string_list *changed = data;
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/*
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* Handle files below a directory first, in case they are all deleted
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* and the directory changes to a file or symlink.
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*/
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QSORT(q->queue, q->nr, depth_first);
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for (i = 0; i < q->nr; i++) {
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struct diff_filespec *ospec = q->queue[i]->one;
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struct diff_filespec *spec = q->queue[i]->two;
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switch (q->queue[i]->status) {
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case DIFF_STATUS_DELETED:
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printf("D ");
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print_path(spec->path);
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string_list_insert(changed, spec->path);
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putchar('\n');
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break;
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case DIFF_STATUS_COPIED:
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case DIFF_STATUS_RENAMED:
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/*
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* If a change in the file corresponding to ospec->path
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* has been observed, we cannot trust its contents
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* because the diff is calculated based on the prior
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* contents, not the current contents. So, declare a
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* copy or rename only if there was no change observed.
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*/
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if (!string_list_has_string(changed, ospec->path)) {
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printf("%c ", q->queue[i]->status);
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print_path(ospec->path);
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putchar(' ');
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print_path(spec->path);
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string_list_insert(changed, spec->path);
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putchar('\n');
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|
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if (oideq(&ospec->oid, &spec->oid) &&
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ospec->mode == spec->mode)
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break;
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}
|
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/* fallthrough */
|
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|
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case DIFF_STATUS_TYPE_CHANGED:
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case DIFF_STATUS_MODIFIED:
|
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case DIFF_STATUS_ADDED:
|
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/*
|
|
* Links refer to objects in another repositories;
|
|
* output the SHA-1 verbatim.
|
|
*/
|
|
if (no_data || S_ISGITLINK(spec->mode))
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|
printf("M %06o %s ", spec->mode,
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anonymize ?
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|
anonymize_oid(oid_to_hex(&spec->oid)) :
|
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oid_to_hex(&spec->oid));
|
|
else {
|
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struct object *object = lookup_object(the_repository,
|
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&spec->oid);
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printf("M %06o :%d ", spec->mode,
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get_object_mark(object));
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}
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print_path(spec->path);
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string_list_insert(changed, spec->path);
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putchar('\n');
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break;
|
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|
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default:
|
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die("Unexpected comparison status '%c' for %s, %s",
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q->queue[i]->status,
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ospec->path ? ospec->path : "none",
|
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spec->path ? spec->path : "none");
|
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}
|
|
}
|
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}
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|
|
static const char *find_encoding(const char *begin, const char *end)
|
|
{
|
|
const char *needle = "\nencoding ";
|
|
char *bol, *eol;
|
|
|
|
bol = memmem(begin, end ? end - begin : strlen(begin),
|
|
needle, strlen(needle));
|
|
if (!bol)
|
|
return NULL;
|
|
bol += strlen(needle);
|
|
eol = strchrnul(bol, '\n');
|
|
*eol = '\0';
|
|
return bol;
|
|
}
|
|
|
|
static char *anonymize_ref_component(void)
|
|
{
|
|
static int counter;
|
|
struct strbuf out = STRBUF_INIT;
|
|
strbuf_addf(&out, "ref%d", counter++);
|
|
return strbuf_detach(&out, NULL);
|
|
}
|
|
|
|
static const char *anonymize_refname(const char *refname)
|
|
{
|
|
/*
|
|
* If any of these prefixes is found, we will leave it intact
|
|
* so that tags remain tags and so forth.
|
|
*/
|
|
static const char *prefixes[] = {
|
|
"refs/heads/",
|
|
"refs/tags/",
|
|
"refs/remotes/",
|
|
"refs/"
|
|
};
|
|
static struct hashmap refs;
|
|
static struct strbuf anon = STRBUF_INIT;
|
|
int i;
|
|
|
|
strbuf_reset(&anon);
|
|
for (i = 0; i < ARRAY_SIZE(prefixes); i++) {
|
|
if (skip_prefix(refname, prefixes[i], &refname)) {
|
|
strbuf_addstr(&anon, prefixes[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
anonymize_path(&anon, refname, &refs, anonymize_ref_component);
|
|
return anon.buf;
|
|
}
|
|
|
|
/*
|
|
* We do not even bother to cache commit messages, as they are unlikely
|
|
* to be repeated verbatim, and it is not that interesting when they are.
|
|
*/
|
|
static char *anonymize_commit_message(void)
|
|
{
|
|
static int counter;
|
|
return xstrfmt("subject %d\n\nbody\n", counter++);
|
|
}
|
|
|
|
static char *anonymize_ident(void)
|
|
{
|
|
static int counter;
|
|
struct strbuf out = STRBUF_INIT;
|
|
strbuf_addf(&out, "User %d <user%d@example.com>", counter, counter);
|
|
counter++;
|
|
return strbuf_detach(&out, NULL);
|
|
}
|
|
|
|
/*
|
|
* Our strategy here is to anonymize the names and email addresses,
|
|
* but keep timestamps intact, as they influence things like traversal
|
|
* order (and by themselves should not be too revealing).
|
|
*/
|
|
static void anonymize_ident_line(const char **beg, const char **end)
|
|
{
|
|
static struct hashmap idents;
|
|
static struct strbuf buffers[] = { STRBUF_INIT, STRBUF_INIT };
|
|
static unsigned which_buffer;
|
|
|
|
struct strbuf *out;
|
|
struct ident_split split;
|
|
const char *end_of_header;
|
|
|
|
out = &buffers[which_buffer++];
|
|
which_buffer %= ARRAY_SIZE(buffers);
|
|
strbuf_reset(out);
|
|
|
|
/* skip "committer", "author", "tagger", etc */
|
|
end_of_header = strchr(*beg, ' ');
|
|
if (!end_of_header)
|
|
BUG("malformed line fed to anonymize_ident_line: %.*s",
|
|
(int)(*end - *beg), *beg);
|
|
end_of_header++;
|
|
strbuf_add(out, *beg, end_of_header - *beg);
|
|
|
|
if (!split_ident_line(&split, end_of_header, *end - end_of_header) &&
|
|
split.date_begin) {
|
|
const char *ident;
|
|
size_t len;
|
|
|
|
len = split.mail_end - split.name_begin;
|
|
ident = anonymize_str(&idents, anonymize_ident,
|
|
split.name_begin, len);
|
|
strbuf_addstr(out, ident);
|
|
strbuf_addch(out, ' ');
|
|
strbuf_add(out, split.date_begin, split.tz_end - split.date_begin);
|
|
} else {
|
|
strbuf_addstr(out, "Malformed Ident <malformed@example.com> 0 -0000");
|
|
}
|
|
|
|
*beg = out->buf;
|
|
*end = out->buf + out->len;
|
|
}
|
|
|
|
static void handle_commit(struct commit *commit, struct rev_info *rev,
|
|
struct string_list *paths_of_changed_objects)
|
|
{
|
|
int saved_output_format = rev->diffopt.output_format;
|
|
const char *commit_buffer;
|
|
const char *author, *author_end, *committer, *committer_end;
|
|
const char *encoding, *message;
|
|
char *reencoded = NULL;
|
|
struct commit_list *p;
|
|
const char *refname;
|
|
int i;
|
|
|
|
rev->diffopt.output_format = DIFF_FORMAT_CALLBACK;
|
|
|
|
parse_commit_or_die(commit);
|
|
commit_buffer = repo_get_commit_buffer(the_repository, commit, NULL);
|
|
author = strstr(commit_buffer, "\nauthor ");
|
|
if (!author)
|
|
die("could not find author in commit %s",
|
|
oid_to_hex(&commit->object.oid));
|
|
author++;
|
|
author_end = strchrnul(author, '\n');
|
|
committer = strstr(author_end, "\ncommitter ");
|
|
if (!committer)
|
|
die("could not find committer in commit %s",
|
|
oid_to_hex(&commit->object.oid));
|
|
committer++;
|
|
committer_end = strchrnul(committer, '\n');
|
|
message = strstr(committer_end, "\n\n");
|
|
encoding = find_encoding(committer_end, message);
|
|
if (message)
|
|
message += 2;
|
|
|
|
if (commit->parents &&
|
|
(get_object_mark(&commit->parents->item->object) != 0 ||
|
|
reference_excluded_commits) &&
|
|
!full_tree) {
|
|
parse_commit_or_die(commit->parents->item);
|
|
diff_tree_oid(get_commit_tree_oid(commit->parents->item),
|
|
get_commit_tree_oid(commit), "", &rev->diffopt);
|
|
}
|
|
else
|
|
diff_root_tree_oid(get_commit_tree_oid(commit),
|
|
"", &rev->diffopt);
|
|
|
|
/* Export the referenced blobs, and remember the marks. */
|
|
for (i = 0; i < diff_queued_diff.nr; i++)
|
|
if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode))
|
|
export_blob(&diff_queued_diff.queue[i]->two->oid);
|
|
|
|
refname = *revision_sources_at(&revision_sources, commit);
|
|
/*
|
|
* FIXME: string_list_remove() below for each ref is overall
|
|
* O(N^2). Compared to a history walk and diffing trees, this is
|
|
* just lost in the noise in practice. However, theoretically a
|
|
* repo may have enough refs for this to become slow.
|
|
*/
|
|
string_list_remove(&extra_refs, refname, 0);
|
|
if (anonymize) {
|
|
refname = anonymize_refname(refname);
|
|
anonymize_ident_line(&committer, &committer_end);
|
|
anonymize_ident_line(&author, &author_end);
|
|
}
|
|
|
|
mark_next_object(&commit->object);
|
|
if (anonymize) {
|
|
reencoded = anonymize_commit_message();
|
|
} else if (encoding) {
|
|
switch(reencode_mode) {
|
|
case REENCODE_YES:
|
|
reencoded = reencode_string(message, "UTF-8", encoding);
|
|
break;
|
|
case REENCODE_NO:
|
|
break;
|
|
case REENCODE_ABORT:
|
|
die("Encountered commit-specific encoding %s in commit "
|
|
"%s; use --reencode=[yes|no] to handle it",
|
|
encoding, oid_to_hex(&commit->object.oid));
|
|
}
|
|
}
|
|
if (!commit->parents)
|
|
printf("reset %s\n", refname);
|
|
printf("commit %s\nmark :%"PRIu32"\n", refname, last_idnum);
|
|
if (show_original_ids)
|
|
printf("original-oid %s\n", oid_to_hex(&commit->object.oid));
|
|
printf("%.*s\n%.*s\n",
|
|
(int)(author_end - author), author,
|
|
(int)(committer_end - committer), committer);
|
|
if (!reencoded && encoding)
|
|
printf("encoding %s\n", encoding);
|
|
printf("data %u\n%s",
|
|
(unsigned)(reencoded
|
|
? strlen(reencoded) : message
|
|
? strlen(message) : 0),
|
|
reencoded ? reencoded : message ? message : "");
|
|
free(reencoded);
|
|
repo_unuse_commit_buffer(the_repository, commit, commit_buffer);
|
|
|
|
for (i = 0, p = commit->parents; p; p = p->next) {
|
|
struct object *obj = &p->item->object;
|
|
int mark = get_object_mark(obj);
|
|
|
|
if (!mark && !reference_excluded_commits)
|
|
continue;
|
|
if (i == 0)
|
|
printf("from ");
|
|
else
|
|
printf("merge ");
|
|
if (mark)
|
|
printf(":%d\n", mark);
|
|
else
|
|
printf("%s\n",
|
|
anonymize ?
|
|
anonymize_oid(oid_to_hex(&obj->oid)) :
|
|
oid_to_hex(&obj->oid));
|
|
i++;
|
|
}
|
|
|
|
if (full_tree)
|
|
printf("deleteall\n");
|
|
log_tree_diff_flush(rev);
|
|
string_list_clear(paths_of_changed_objects, 0);
|
|
rev->diffopt.output_format = saved_output_format;
|
|
|
|
printf("\n");
|
|
|
|
show_progress();
|
|
}
|
|
|
|
static char *anonymize_tag(void)
|
|
{
|
|
static int counter;
|
|
struct strbuf out = STRBUF_INIT;
|
|
strbuf_addf(&out, "tag message %d", counter++);
|
|
return strbuf_detach(&out, NULL);
|
|
}
|
|
|
|
|
|
static void handle_tag(const char *name, struct tag *tag)
|
|
{
|
|
unsigned long size;
|
|
enum object_type type;
|
|
char *buf;
|
|
const char *tagger, *tagger_end, *message;
|
|
size_t message_size = 0;
|
|
struct object *tagged;
|
|
int tagged_mark;
|
|
struct commit *p;
|
|
|
|
/* Trees have no identifier in fast-export output, thus we have no way
|
|
* to output tags of trees, tags of tags of trees, etc. Simply omit
|
|
* such tags.
|
|
*/
|
|
tagged = tag->tagged;
|
|
while (tagged->type == OBJ_TAG) {
|
|
tagged = ((struct tag *)tagged)->tagged;
|
|
}
|
|
if (tagged->type == OBJ_TREE) {
|
|
warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.",
|
|
oid_to_hex(&tag->object.oid));
|
|
return;
|
|
}
|
|
|
|
buf = repo_read_object_file(the_repository, &tag->object.oid, &type,
|
|
&size);
|
|
if (!buf)
|
|
die("could not read tag %s", oid_to_hex(&tag->object.oid));
|
|
message = memmem(buf, size, "\n\n", 2);
|
|
if (message) {
|
|
message += 2;
|
|
message_size = strlen(message);
|
|
}
|
|
tagger = memmem(buf, message ? message - buf : size, "\ntagger ", 8);
|
|
if (!tagger) {
|
|
if (fake_missing_tagger)
|
|
tagger = "tagger Unspecified Tagger "
|
|
"<unspecified-tagger> 0 +0000";
|
|
else
|
|
tagger = "";
|
|
tagger_end = tagger + strlen(tagger);
|
|
} else {
|
|
tagger++;
|
|
tagger_end = strchrnul(tagger, '\n');
|
|
if (anonymize)
|
|
anonymize_ident_line(&tagger, &tagger_end);
|
|
}
|
|
|
|
if (anonymize) {
|
|
name = anonymize_refname(name);
|
|
if (message) {
|
|
static struct hashmap tags;
|
|
message = anonymize_str(&tags, anonymize_tag,
|
|
message, message_size);
|
|
message_size = strlen(message);
|
|
}
|
|
}
|
|
|
|
/* handle signed tags */
|
|
if (message) {
|
|
const char *signature = strstr(message,
|
|
"\n-----BEGIN PGP SIGNATURE-----\n");
|
|
if (signature)
|
|
switch(signed_tag_mode) {
|
|
case SIGNED_TAG_ABORT:
|
|
die("encountered signed tag %s; use "
|
|
"--signed-tags=<mode> to handle it",
|
|
oid_to_hex(&tag->object.oid));
|
|
case WARN:
|
|
warning("exporting signed tag %s",
|
|
oid_to_hex(&tag->object.oid));
|
|
/* fallthru */
|
|
case VERBATIM:
|
|
break;
|
|
case WARN_STRIP:
|
|
warning("stripping signature from tag %s",
|
|
oid_to_hex(&tag->object.oid));
|
|
/* fallthru */
|
|
case STRIP:
|
|
message_size = signature + 1 - message;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* handle tag->tagged having been filtered out due to paths specified */
|
|
tagged = tag->tagged;
|
|
tagged_mark = get_object_mark(tagged);
|
|
if (!tagged_mark) {
|
|
switch(tag_of_filtered_mode) {
|
|
case TAG_FILTERING_ABORT:
|
|
die("tag %s tags unexported object; use "
|
|
"--tag-of-filtered-object=<mode> to handle it",
|
|
oid_to_hex(&tag->object.oid));
|
|
case DROP:
|
|
/* Ignore this tag altogether */
|
|
free(buf);
|
|
return;
|
|
case REWRITE:
|
|
if (tagged->type == OBJ_TAG && !mark_tags) {
|
|
die(_("Error: Cannot export nested tags unless --mark-tags is specified."));
|
|
} else if (tagged->type == OBJ_COMMIT) {
|
|
p = rewrite_commit((struct commit *)tagged);
|
|
if (!p) {
|
|
printf("reset %s\nfrom %s\n\n",
|
|
name, oid_to_hex(null_oid()));
|
|
free(buf);
|
|
return;
|
|
}
|
|
tagged_mark = get_object_mark(&p->object);
|
|
} else {
|
|
/* tagged->type is either OBJ_BLOB or OBJ_TAG */
|
|
tagged_mark = get_object_mark(tagged);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (tagged->type == OBJ_TAG) {
|
|
printf("reset %s\nfrom %s\n\n",
|
|
name, oid_to_hex(null_oid()));
|
|
}
|
|
skip_prefix(name, "refs/tags/", &name);
|
|
printf("tag %s\n", name);
|
|
if (mark_tags) {
|
|
mark_next_object(&tag->object);
|
|
printf("mark :%"PRIu32"\n", last_idnum);
|
|
}
|
|
if (tagged_mark)
|
|
printf("from :%d\n", tagged_mark);
|
|
else
|
|
printf("from %s\n", oid_to_hex(&tagged->oid));
|
|
|
|
if (show_original_ids)
|
|
printf("original-oid %s\n", oid_to_hex(&tag->object.oid));
|
|
printf("%.*s%sdata %d\n%.*s\n",
|
|
(int)(tagger_end - tagger), tagger,
|
|
tagger == tagger_end ? "" : "\n",
|
|
(int)message_size, (int)message_size, message ? message : "");
|
|
free(buf);
|
|
}
|
|
|
|
static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name)
|
|
{
|
|
switch (e->item->type) {
|
|
case OBJ_COMMIT:
|
|
return (struct commit *)e->item;
|
|
case OBJ_TAG: {
|
|
struct tag *tag = (struct tag *)e->item;
|
|
|
|
/* handle nested tags */
|
|
while (tag && tag->object.type == OBJ_TAG) {
|
|
parse_object(the_repository, &tag->object.oid);
|
|
string_list_append(&tag_refs, full_name)->util = tag;
|
|
tag = (struct tag *)tag->tagged;
|
|
}
|
|
if (!tag)
|
|
die("Tag %s points nowhere?", e->name);
|
|
return (struct commit *)tag;
|
|
}
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void get_tags_and_duplicates(struct rev_cmdline_info *info)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < info->nr; i++) {
|
|
struct rev_cmdline_entry *e = info->rev + i;
|
|
struct object_id oid;
|
|
struct commit *commit;
|
|
char *full_name;
|
|
|
|
if (e->flags & UNINTERESTING)
|
|
continue;
|
|
|
|
if (repo_dwim_ref(the_repository, e->name, strlen(e->name),
|
|
&oid, &full_name, 0) != 1)
|
|
continue;
|
|
|
|
if (refspecs.nr) {
|
|
char *private;
|
|
private = apply_refspecs(&refspecs, full_name);
|
|
if (private) {
|
|
free(full_name);
|
|
full_name = private;
|
|
}
|
|
}
|
|
|
|
commit = get_commit(e, full_name);
|
|
if (!commit) {
|
|
warning("%s: Unexpected object of type %s, skipping.",
|
|
e->name,
|
|
type_name(e->item->type));
|
|
continue;
|
|
}
|
|
|
|
switch(commit->object.type) {
|
|
case OBJ_COMMIT:
|
|
break;
|
|
case OBJ_BLOB:
|
|
export_blob(&commit->object.oid);
|
|
continue;
|
|
default: /* OBJ_TAG (nested tags) is already handled */
|
|
warning("Tag points to object of unexpected type %s, skipping.",
|
|
type_name(commit->object.type));
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Make sure this ref gets properly updated eventually, whether
|
|
* through a commit or manually at the end.
|
|
*/
|
|
if (e->item->type != OBJ_TAG)
|
|
string_list_append(&extra_refs, full_name)->util = commit;
|
|
|
|
if (!*revision_sources_at(&revision_sources, commit))
|
|
*revision_sources_at(&revision_sources, commit) = full_name;
|
|
}
|
|
|
|
string_list_sort(&extra_refs);
|
|
string_list_remove_duplicates(&extra_refs, 0);
|
|
}
|
|
|
|
static void handle_tags_and_duplicates(struct string_list *extras)
|
|
{
|
|
struct commit *commit;
|
|
int i;
|
|
|
|
for (i = extras->nr - 1; i >= 0; i--) {
|
|
const char *name = extras->items[i].string;
|
|
struct object *object = extras->items[i].util;
|
|
int mark;
|
|
|
|
switch (object->type) {
|
|
case OBJ_TAG:
|
|
handle_tag(name, (struct tag *)object);
|
|
break;
|
|
case OBJ_COMMIT:
|
|
if (anonymize)
|
|
name = anonymize_refname(name);
|
|
/* create refs pointing to already seen commits */
|
|
commit = rewrite_commit((struct commit *)object);
|
|
if (!commit) {
|
|
/*
|
|
* Neither this object nor any of its
|
|
* ancestors touch any relevant paths, so
|
|
* it has been filtered to nothing. Delete
|
|
* it.
|
|
*/
|
|
printf("reset %s\nfrom %s\n\n",
|
|
name, oid_to_hex(null_oid()));
|
|
continue;
|
|
}
|
|
|
|
mark = get_object_mark(&commit->object);
|
|
if (!mark) {
|
|
/*
|
|
* Getting here means we have a commit which
|
|
* was excluded by a negative refspec (e.g.
|
|
* fast-export ^HEAD HEAD). If we are
|
|
* referencing excluded commits, set the ref
|
|
* to the exact commit. Otherwise, the user
|
|
* wants the branch exported but every commit
|
|
* in its history to be deleted, which basically
|
|
* just means deletion of the ref.
|
|
*/
|
|
if (!reference_excluded_commits) {
|
|
/* delete the ref */
|
|
printf("reset %s\nfrom %s\n\n",
|
|
name, oid_to_hex(null_oid()));
|
|
continue;
|
|
}
|
|
/* set ref to commit using oid, not mark */
|
|
printf("reset %s\nfrom %s\n\n", name,
|
|
oid_to_hex(&commit->object.oid));
|
|
continue;
|
|
}
|
|
|
|
printf("reset %s\nfrom :%d\n\n", name, mark
|
|
);
|
|
show_progress();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void export_marks(char *file)
|
|
{
|
|
unsigned int i;
|
|
uint32_t mark;
|
|
struct decoration_entry *deco = idnums.entries;
|
|
FILE *f;
|
|
int e = 0;
|
|
|
|
f = fopen_for_writing(file);
|
|
if (!f)
|
|
die_errno("Unable to open marks file %s for writing.", file);
|
|
|
|
for (i = 0; i < idnums.size; i++) {
|
|
if (deco->base && deco->base->type == 1) {
|
|
mark = ptr_to_mark(deco->decoration);
|
|
if (fprintf(f, ":%"PRIu32" %s\n", mark,
|
|
oid_to_hex(&deco->base->oid)) < 0) {
|
|
e = 1;
|
|
break;
|
|
}
|
|
}
|
|
deco++;
|
|
}
|
|
|
|
e |= ferror(f);
|
|
e |= fclose(f);
|
|
if (e)
|
|
error("Unable to write marks file %s.", file);
|
|
}
|
|
|
|
static void import_marks(char *input_file, int check_exists)
|
|
{
|
|
char line[512];
|
|
FILE *f;
|
|
struct stat sb;
|
|
|
|
if (check_exists && stat(input_file, &sb))
|
|
return;
|
|
|
|
f = xfopen(input_file, "r");
|
|
while (fgets(line, sizeof(line), f)) {
|
|
uint32_t mark;
|
|
char *line_end, *mark_end;
|
|
struct object_id oid;
|
|
struct object *object;
|
|
struct commit *commit;
|
|
enum object_type type;
|
|
|
|
line_end = strchr(line, '\n');
|
|
if (line[0] != ':' || !line_end)
|
|
die("corrupt mark line: %s", line);
|
|
*line_end = '\0';
|
|
|
|
mark = strtoumax(line + 1, &mark_end, 10);
|
|
if (!mark || mark_end == line + 1
|
|
|| *mark_end != ' ' || get_oid_hex(mark_end + 1, &oid))
|
|
die("corrupt mark line: %s", line);
|
|
|
|
if (last_idnum < mark)
|
|
last_idnum = mark;
|
|
|
|
type = oid_object_info(the_repository, &oid, NULL);
|
|
if (type < 0)
|
|
die("object not found: %s", oid_to_hex(&oid));
|
|
|
|
if (type != OBJ_COMMIT)
|
|
/* only commits */
|
|
continue;
|
|
|
|
commit = lookup_commit(the_repository, &oid);
|
|
if (!commit)
|
|
die("not a commit? can't happen: %s", oid_to_hex(&oid));
|
|
|
|
object = &commit->object;
|
|
|
|
if (object->flags & SHOWN)
|
|
error("Object %s already has a mark", oid_to_hex(&oid));
|
|
|
|
mark_object(object, mark);
|
|
|
|
object->flags |= SHOWN;
|
|
}
|
|
fclose(f);
|
|
}
|
|
|
|
static void handle_deletes(void)
|
|
{
|
|
int i;
|
|
for (i = 0; i < refspecs.nr; i++) {
|
|
struct refspec_item *refspec = &refspecs.items[i];
|
|
if (*refspec->src)
|
|
continue;
|
|
|
|
printf("reset %s\nfrom %s\n\n",
|
|
refspec->dst, oid_to_hex(null_oid()));
|
|
}
|
|
}
|
|
|
|
static int parse_opt_anonymize_map(const struct option *opt,
|
|
const char *arg, int unset)
|
|
{
|
|
struct hashmap *map = opt->value;
|
|
const char *delim, *value;
|
|
size_t keylen;
|
|
|
|
BUG_ON_OPT_NEG(unset);
|
|
|
|
delim = strchr(arg, ':');
|
|
if (delim) {
|
|
keylen = delim - arg;
|
|
value = delim + 1;
|
|
} else {
|
|
keylen = strlen(arg);
|
|
value = arg;
|
|
}
|
|
|
|
if (!keylen || !*value)
|
|
return error(_("--anonymize-map token cannot be empty"));
|
|
|
|
add_anonymized_entry(map, memhash(arg, keylen), arg, keylen,
|
|
xstrdup(value));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cmd_fast_export(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct rev_info revs;
|
|
struct commit *commit;
|
|
char *export_filename = NULL,
|
|
*import_filename = NULL,
|
|
*import_filename_if_exists = NULL;
|
|
uint32_t lastimportid;
|
|
struct string_list refspecs_list = STRING_LIST_INIT_NODUP;
|
|
struct string_list paths_of_changed_objects = STRING_LIST_INIT_DUP;
|
|
struct option options[] = {
|
|
OPT_INTEGER(0, "progress", &progress,
|
|
N_("show progress after <n> objects")),
|
|
OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, N_("mode"),
|
|
N_("select handling of signed tags"),
|
|
parse_opt_signed_tag_mode),
|
|
OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, N_("mode"),
|
|
N_("select handling of tags that tag filtered objects"),
|
|
parse_opt_tag_of_filtered_mode),
|
|
OPT_CALLBACK(0, "reencode", &reencode_mode, N_("mode"),
|
|
N_("select handling of commit messages in an alternate encoding"),
|
|
parse_opt_reencode_mode),
|
|
OPT_STRING(0, "export-marks", &export_filename, N_("file"),
|
|
N_("dump marks to this file")),
|
|
OPT_STRING(0, "import-marks", &import_filename, N_("file"),
|
|
N_("import marks from this file")),
|
|
OPT_STRING(0, "import-marks-if-exists",
|
|
&import_filename_if_exists,
|
|
N_("file"),
|
|
N_("import marks from this file if it exists")),
|
|
OPT_BOOL(0, "fake-missing-tagger", &fake_missing_tagger,
|
|
N_("fake a tagger when tags lack one")),
|
|
OPT_BOOL(0, "full-tree", &full_tree,
|
|
N_("output full tree for each commit")),
|
|
OPT_BOOL(0, "use-done-feature", &use_done_feature,
|
|
N_("use the done feature to terminate the stream")),
|
|
OPT_BOOL(0, "no-data", &no_data, N_("skip output of blob data")),
|
|
OPT_STRING_LIST(0, "refspec", &refspecs_list, N_("refspec"),
|
|
N_("apply refspec to exported refs")),
|
|
OPT_BOOL(0, "anonymize", &anonymize, N_("anonymize output")),
|
|
OPT_CALLBACK_F(0, "anonymize-map", &anonymized_seeds, N_("from:to"),
|
|
N_("convert <from> to <to> in anonymized output"),
|
|
PARSE_OPT_NONEG, parse_opt_anonymize_map),
|
|
OPT_BOOL(0, "reference-excluded-parents",
|
|
&reference_excluded_commits, N_("reference parents which are not in fast-export stream by object id")),
|
|
OPT_BOOL(0, "show-original-ids", &show_original_ids,
|
|
N_("show original object ids of blobs/commits")),
|
|
OPT_BOOL(0, "mark-tags", &mark_tags,
|
|
N_("label tags with mark ids")),
|
|
|
|
OPT_END()
|
|
};
|
|
|
|
if (argc == 1)
|
|
usage_with_options (fast_export_usage, options);
|
|
|
|
/* we handle encodings */
|
|
git_config(git_default_config, NULL);
|
|
|
|
repo_init_revisions(the_repository, &revs, prefix);
|
|
init_revision_sources(&revision_sources);
|
|
revs.topo_order = 1;
|
|
revs.sources = &revision_sources;
|
|
revs.rewrite_parents = 1;
|
|
argc = parse_options(argc, argv, prefix, options, fast_export_usage,
|
|
PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN_OPT);
|
|
argc = setup_revisions(argc, argv, &revs, NULL);
|
|
if (argc > 1)
|
|
usage_with_options (fast_export_usage, options);
|
|
|
|
if (anonymized_seeds.cmpfn && !anonymize)
|
|
die(_("the option '%s' requires '%s'"), "--anonymize-map", "--anonymize");
|
|
|
|
if (refspecs_list.nr) {
|
|
int i;
|
|
|
|
for (i = 0; i < refspecs_list.nr; i++)
|
|
refspec_append(&refspecs, refspecs_list.items[i].string);
|
|
|
|
string_list_clear(&refspecs_list, 1);
|
|
}
|
|
|
|
if (use_done_feature)
|
|
printf("feature done\n");
|
|
|
|
if (import_filename && import_filename_if_exists)
|
|
die(_("options '%s' and '%s' cannot be used together"), "--import-marks", "--import-marks-if-exists");
|
|
if (import_filename)
|
|
import_marks(import_filename, 0);
|
|
else if (import_filename_if_exists)
|
|
import_marks(import_filename_if_exists, 1);
|
|
lastimportid = last_idnum;
|
|
|
|
if (import_filename && revs.prune_data.nr)
|
|
full_tree = 1;
|
|
|
|
get_tags_and_duplicates(&revs.cmdline);
|
|
|
|
if (prepare_revision_walk(&revs))
|
|
die("revision walk setup failed");
|
|
|
|
revs.reverse = 1;
|
|
revs.diffopt.format_callback = show_filemodify;
|
|
revs.diffopt.format_callback_data = &paths_of_changed_objects;
|
|
revs.diffopt.flags.recursive = 1;
|
|
revs.diffopt.no_free = 1;
|
|
while ((commit = get_revision(&revs)))
|
|
handle_commit(commit, &revs, &paths_of_changed_objects);
|
|
|
|
handle_tags_and_duplicates(&extra_refs);
|
|
handle_tags_and_duplicates(&tag_refs);
|
|
handle_deletes();
|
|
|
|
if (export_filename && lastimportid != last_idnum)
|
|
export_marks(export_filename);
|
|
|
|
if (use_done_feature)
|
|
printf("done\n");
|
|
|
|
refspec_clear(&refspecs);
|
|
release_revisions(&revs);
|
|
|
|
return 0;
|
|
}
|