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-rw-r--r--builtin-fast-export.c491
1 files changed, 0 insertions, 491 deletions
diff --git a/builtin-fast-export.c b/builtin-fast-export.c
deleted file mode 100644
index 1bf4e06713..0000000000
--- a/builtin-fast-export.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * "git fast-export" builtin command
- *
- * Copyright (C) 2007 Johannes E. Schindelin
- */
-#include "builtin.h"
-#include "cache.h"
-#include "commit.h"
-#include "object.h"
-#include "tag.h"
-#include "diff.h"
-#include "diffcore.h"
-#include "log-tree.h"
-#include "revision.h"
-#include "decorate.h"
-#include "path-list.h"
-#include "utf8.h"
-#include "parse-options.h"
-
-static const char *fast_export_usage[] = {
- "git-fast-export [rev-list-opts]",
- NULL
-};
-
-static int progress;
-static enum { VERBATIM, WARN, STRIP, ABORT } signed_tag_mode = ABORT;
-
-static int parse_opt_signed_tag_mode(const struct option *opt,
- const char *arg, int unset)
-{
- if (unset || !strcmp(arg, "abort"))
- signed_tag_mode = ABORT;
- else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore"))
- signed_tag_mode = VERBATIM;
- else if (!strcmp(arg, "warn"))
- signed_tag_mode = WARN;
- else if (!strcmp(arg, "strip"))
- signed_tag_mode = STRIP;
- else
- return error("Unknown signed-tag mode: %s", arg);
- return 0;
-}
-
-static struct decoration idnums;
-static uint32_t last_idnum;
-
-static int has_unshown_parent(struct commit *commit)
-{
- struct commit_list *parent;
-
- for (parent = commit->parents; parent; parent = parent->next)
- if (!(parent->item->object.flags & SHOWN) &&
- !(parent->item->object.flags & UNINTERESTING))
- return 1;
- return 0;
-}
-
-/* Since intptr_t is C99, we do not use it here */
-static inline uint32_t *mark_to_ptr(uint32_t mark)
-{
- return ((uint32_t *)NULL) + mark;
-}
-
-static inline uint32_t ptr_to_mark(void * mark)
-{
- return (uint32_t *)mark - (uint32_t *)NULL;
-}
-
-static inline void mark_object(struct object *object, uint32_t mark)
-{
- add_decoration(&idnums, object, mark_to_ptr(mark));
-}
-
-static inline void mark_next_object(struct object *object)
-{
- mark_object(object, ++last_idnum);
-}
-
-static int get_object_mark(struct object *object)
-{
- void *decoration = lookup_decoration(&idnums, object);
- if (!decoration)
- return 0;
- return ptr_to_mark(decoration);
-}
-
-static void show_progress(void)
-{
- static int counter = 0;
- if (!progress)
- return;
- if ((++counter % progress) == 0)
- printf("progress %d objects\n", counter);
-}
-
-static void handle_object(const unsigned char *sha1)
-{
- unsigned long size;
- enum object_type type;
- char *buf;
- struct object *object;
-
- if (is_null_sha1(sha1))
- return;
-
- object = parse_object(sha1);
- if (!object)
- die ("Could not read blob %s", sha1_to_hex(sha1));
-
- if (object->flags & SHOWN)
- return;
-
- buf = read_sha1_file(sha1, &type, &size);
- if (!buf)
- die ("Could not read blob %s", sha1_to_hex(sha1));
-
- mark_next_object(object);
-
- printf("blob\nmark :%d\ndata %lu\n", last_idnum, size);
- if (size && fwrite(buf, size, 1, stdout) != 1)
- die ("Could not write blob %s", sha1_to_hex(sha1));
- printf("\n");
-
- show_progress();
-
- object->flags |= SHOWN;
- free(buf);
-}
-
-static void show_filemodify(struct diff_queue_struct *q,
- struct diff_options *options, void *data)
-{
- int i;
- for (i = 0; i < q->nr; i++) {
- struct diff_filespec *spec = q->queue[i]->two;
- if (is_null_sha1(spec->sha1))
- printf("D %s\n", spec->path);
- else {
- struct object *object = lookup_object(spec->sha1);
- printf("M %06o :%d %s\n", spec->mode,
- get_object_mark(object), spec->path);
- }
- }
-}
-
-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 git_commit_encoding;
- bol += strlen(needle);
- eol = strchrnul(bol, '\n');
- *eol = '\0';
- return bol;
-}
-
-static void handle_commit(struct commit *commit, struct rev_info *rev)
-{
- int saved_output_format = rev->diffopt.output_format;
- const char *author, *author_end, *committer, *committer_end;
- const char *encoding, *message;
- char *reencoded = NULL;
- struct commit_list *p;
- int i;
-
- rev->diffopt.output_format = DIFF_FORMAT_CALLBACK;
-
- parse_commit(commit);
- author = strstr(commit->buffer, "\nauthor ");
- if (!author)
- die ("Could not find author in commit %s",
- sha1_to_hex(commit->object.sha1));
- author++;
- author_end = strchrnul(author, '\n');
- committer = strstr(author_end, "\ncommitter ");
- if (!committer)
- die ("Could not find committer in commit %s",
- sha1_to_hex(commit->object.sha1));
- 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) {
- parse_commit(commit->parents->item);
- diff_tree_sha1(commit->parents->item->tree->object.sha1,
- commit->tree->object.sha1, "", &rev->diffopt);
- }
- else
- diff_root_tree_sha1(commit->tree->object.sha1,
- "", &rev->diffopt);
-
- for (i = 0; i < diff_queued_diff.nr; i++)
- handle_object(diff_queued_diff.queue[i]->two->sha1);
-
- mark_next_object(&commit->object);
- if (!is_encoding_utf8(encoding))
- reencoded = reencode_string(message, "UTF-8", encoding);
- if (!commit->parents)
- printf("reset %s\n", (const char*)commit->util);
- printf("commit %s\nmark :%d\n%.*s\n%.*s\ndata %u\n%s",
- (const char *)commit->util, last_idnum,
- (int)(author_end - author), author,
- (int)(committer_end - committer), committer,
- (unsigned)(reencoded
- ? strlen(reencoded) : message
- ? strlen(message) : 0),
- reencoded ? reencoded : message ? message : "");
- free(reencoded);
-
- for (i = 0, p = commit->parents; p; p = p->next) {
- int mark = get_object_mark(&p->item->object);
- if (!mark)
- continue;
- if (i == 0)
- printf("from :%d\n", mark);
- else
- printf("merge :%d\n", mark);
- i++;
- }
-
- log_tree_diff_flush(rev);
- rev->diffopt.output_format = saved_output_format;
-
- printf("\n");
-
- show_progress();
-}
-
-static void handle_tail(struct object_array *commits, struct rev_info *revs)
-{
- struct commit *commit;
- while (commits->nr) {
- commit = (struct commit *)commits->objects[commits->nr - 1].item;
- if (has_unshown_parent(commit))
- return;
- handle_commit(commit, revs);
- commits->nr--;
- }
-}
-
-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;
-
- buf = read_sha1_file(tag->object.sha1, &type, &size);
- if (!buf)
- die ("Could not read tag %s", sha1_to_hex(tag->object.sha1));
- 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)
- die ("No tagger for tag %s", sha1_to_hex(tag->object.sha1));
- tagger++;
- tagger_end = strchrnul(tagger, '\n');
-
- /* handle signed tags */
- if (message) {
- const char *signature = strstr(message,
- "\n-----BEGIN PGP SIGNATURE-----\n");
- if (signature)
- switch(signed_tag_mode) {
- case ABORT:
- die ("Encountered signed tag %s; use "
- "--signed-tag=<mode> to handle it.",
- sha1_to_hex(tag->object.sha1));
- case WARN:
- warning ("Exporting signed tag %s",
- sha1_to_hex(tag->object.sha1));
- /* fallthru */
- case VERBATIM:
- break;
- case STRIP:
- message_size = signature + 1 - message;
- break;
- }
- }
-
- if (!prefixcmp(name, "refs/tags/"))
- name += 10;
- printf("tag %s\nfrom :%d\n%.*s\ndata %d\n%.*s\n",
- name, get_object_mark(tag->tagged),
- (int)(tagger_end - tagger), tagger,
- (int)message_size, (int)message_size, message ? message : "");
-}
-
-static void get_tags_and_duplicates(struct object_array *pending,
- struct path_list *extra_refs)
-{
- struct tag *tag;
- int i;
-
- for (i = 0; i < pending->nr; i++) {
- struct object_array_entry *e = pending->objects + i;
- unsigned char sha1[20];
- struct commit *commit = commit;
- char *full_name;
-
- if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1)
- continue;
-
- switch (e->item->type) {
- case OBJ_COMMIT:
- commit = (struct commit *)e->item;
- break;
- case OBJ_TAG:
- tag = (struct tag *)e->item;
- while (tag && tag->object.type == OBJ_TAG) {
- path_list_insert(full_name, extra_refs)->util = tag;
- tag = (struct tag *)tag->tagged;
- }
- if (!tag)
- die ("Tag %s points nowhere?", e->name);
- switch(tag->object.type) {
- case OBJ_COMMIT:
- commit = (struct commit *)tag;
- break;
- case OBJ_BLOB:
- handle_object(tag->object.sha1);
- continue;
- }
- break;
- default:
- die ("Unexpected object of type %s",
- typename(e->item->type));
- }
- if (commit->util)
- /* more than one name for the same object */
- path_list_insert(full_name, extra_refs)->util = commit;
- else
- commit->util = full_name;
- }
-}
-
-static void handle_tags_and_duplicates(struct path_list *extra_refs)
-{
- struct commit *commit;
- int i;
-
- for (i = extra_refs->nr - 1; i >= 0; i--) {
- const char *name = extra_refs->items[i].path;
- struct object *object = extra_refs->items[i].util;
- switch (object->type) {
- case OBJ_TAG:
- handle_tag(name, (struct tag *)object);
- break;
- case OBJ_COMMIT:
- /* create refs pointing to already seen commits */
- commit = (struct commit *)object;
- printf("reset %s\nfrom :%d\n\n", name,
- get_object_mark(&commit->object));
- show_progress();
- break;
- }
- }
-}
-
-static void export_marks(char *file)
-{
- unsigned int i;
- uint32_t mark;
- struct object_decoration *deco = idnums.hash;
- FILE *f;
-
- f = fopen(file, "w");
- if (!f)
- error("Unable to open marks file %s for writing", file);
-
- for (i = 0; i < idnums.size; ++i) {
- deco++;
- if (deco && deco->base && deco->base->type == 1) {
- mark = ptr_to_mark(deco->decoration);
- fprintf(f, ":%u %s\n", mark, sha1_to_hex(deco->base->sha1));
- }
- }
-
- if (ferror(f) || fclose(f))
- error("Unable to write marks file %s.", file);
-}
-
-static void import_marks(char * input_file)
-{
- char line[512];
- FILE *f = fopen(input_file, "r");
- if (!f)
- die("cannot read %s: %s", input_file, strerror(errno));
-
- while (fgets(line, sizeof(line), f)) {
- uint32_t mark;
- char *line_end, *mark_end;
- unsigned char sha1[20];
- struct object *object;
-
- 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_sha1(mark_end + 1, sha1))
- die("corrupt mark line: %s", line);
-
- object = parse_object(sha1);
- if (!object)
- die ("Could not read blob %s", sha1_to_hex(sha1));
-
- if (object->flags & SHOWN)
- error("Object %s already has a mark", sha1_to_hex(sha1));
-
- mark_object(object, mark);
- if (last_idnum < mark)
- last_idnum = mark;
-
- object->flags |= SHOWN;
- }
- fclose(f);
-}
-
-int cmd_fast_export(int argc, const char **argv, const char *prefix)
-{
- struct rev_info revs;
- struct object_array commits = { 0, 0, NULL };
- struct path_list extra_refs = { NULL, 0, 0, 0 };
- struct commit *commit;
- char *export_filename = NULL, *import_filename = NULL;
- struct option options[] = {
- OPT_INTEGER(0, "progress", &progress,
- "show progress after <n> objects"),
- OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, "mode",
- "select handling of signed tags",
- parse_opt_signed_tag_mode),
- OPT_STRING(0, "export-marks", &export_filename, "FILE",
- "Dump marks to this file"),
- OPT_STRING(0, "import-marks", &import_filename, "FILE",
- "Import marks from this file"),
- OPT_END()
- };
-
- /* we handle encodings */
- git_config(git_default_config, NULL);
-
- init_revisions(&revs, prefix);
- argc = setup_revisions(argc, argv, &revs, NULL);
- argc = parse_options(argc, argv, options, fast_export_usage, 0);
- if (argc > 1)
- usage_with_options (fast_export_usage, options);
-
- if (import_filename)
- import_marks(import_filename);
-
- get_tags_and_duplicates(&revs.pending, &extra_refs);
-
- if (prepare_revision_walk(&revs))
- die("revision walk setup failed");
- revs.diffopt.format_callback = show_filemodify;
- DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
- while ((commit = get_revision(&revs))) {
- if (has_unshown_parent(commit)) {
- struct commit_list *parent = commit->parents;
- add_object_array(&commit->object, NULL, &commits);
- for (; parent; parent = parent->next)
- if (!parent->item->util)
- parent->item->util = commit->util;
- }
- else {
- handle_commit(commit, &revs);
- handle_tail(&commits, &revs);
- }
- }
-
- handle_tags_and_duplicates(&extra_refs);
-
- if (export_filename)
- export_marks(export_filename);
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 23:31:33 +0000