зеркало из https://github.com/microsoft/git.git
vcs-svn: eliminate repo_tree structure
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>
This commit is contained in:
Jonathan Nieder
Родитель
7e11902c99
Коммит
723b7a2789
|
|
@ -8,6 +8,7 @@
|
|||
#include "line_buffer.h"
|
||||
#include "repo_tree.h"
|
||||
#include "string_pool.h"
|
||||
#include "strbuf.h"
|
||||
|
||||
#define MAX_GITSVN_LINE_LEN 4096
|
||||
|
||||
|
|
@ -31,7 +32,7 @@ void fast_export_reset(void)
|
|||
buffer_reset(&report_buffer);
|
||||
}
|
||||
|
||||
void fast_export_delete(uint32_t depth, uint32_t *path)
|
||||
void fast_export_delete(uint32_t depth, const uint32_t *path)
|
||||
{
|
||||
putchar('D');
|
||||
putchar(' ');
|
||||
|
|
@ -39,22 +40,27 @@ void fast_export_delete(uint32_t depth, uint32_t *path)
|
|||
putchar('\n');
|
||||
}
|
||||
|
||||
void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
|
||||
uint32_t mark)
|
||||
static void fast_export_truncate(uint32_t depth, const uint32_t *path, uint32_t mode)
|
||||
{
|
||||
fast_export_modify(depth, path, mode, "inline");
|
||||
printf("data 0\n\n");
|
||||
}
|
||||
|
||||
void fast_export_modify(uint32_t depth, const uint32_t *path, uint32_t mode,
|
||||
const char *dataref)
|
||||
{
|
||||
/* Mode must be 100644, 100755, 120000, or 160000. */
|
||||
printf("M %06"PRIo32" :%"PRIu32" ", mode, mark);
|
||||
if (!dataref) {
|
||||
fast_export_truncate(depth, path, mode);
|
||||
return;
|
||||
}
|
||||
printf("M %06"PRIo32" %s ", mode, dataref);
|
||||
pool_print_seq(depth, path, '/', stdout);
|
||||
putchar('\n');
|
||||
}
|
||||
|
||||
void fast_export_begin_commit(uint32_t revision)
|
||||
{
|
||||
printf("# commit %"PRIu32".\n", revision);
|
||||
}
|
||||
|
||||
static char gitsvnline[MAX_GITSVN_LINE_LEN];
|
||||
void fast_export_commit(uint32_t revision, uint32_t author, char *log,
|
||||
void fast_export_begin_commit(uint32_t revision, uint32_t author, char *log,
|
||||
uint32_t uuid, uint32_t url,
|
||||
unsigned long timestamp)
|
||||
{
|
||||
|
|
@ -81,12 +87,31 @@ void fast_export_commit(uint32_t revision, uint32_t author, char *log,
|
|||
printf("from refs/heads/master^0\n");
|
||||
first_commit_done = 1;
|
||||
}
|
||||
repo_diff(revision - 1, revision);
|
||||
fputc('\n', stdout);
|
||||
}
|
||||
|
||||
void fast_export_end_commit(uint32_t revision)
|
||||
{
|
||||
printf("progress Imported commit %"PRIu32".\n\n", revision);
|
||||
}
|
||||
|
||||
static void ls_from_rev(uint32_t rev, uint32_t depth, const uint32_t *path)
|
||||
{
|
||||
/* ls :5 path/to/old/file */
|
||||
printf("ls :%"PRIu32" ", rev);
|
||||
pool_print_seq(depth, path, '/', stdout);
|
||||
putchar('\n');
|
||||
fflush(stdout);
|
||||
}
|
||||
|
||||
static void ls_from_active_commit(uint32_t depth, const uint32_t *path)
|
||||
{
|
||||
/* ls "path/to/file" */
|
||||
printf("ls \"");
|
||||
pool_print_seq(depth, path, '/', stdout);
|
||||
printf("\"\n");
|
||||
fflush(stdout);
|
||||
}
|
||||
|
||||
static const char *get_response_line(void)
|
||||
{
|
||||
const char *line = buffer_read_line(&report_buffer);
|
||||
|
|
@ -97,14 +122,69 @@ static const char *get_response_line(void)
|
|||
die("unexpected end of fast-import feedback");
|
||||
}
|
||||
|
||||
void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len, struct line_buffer *input)
|
||||
void fast_export_data(uint32_t mode, uint32_t len, struct line_buffer *input)
|
||||
{
|
||||
if (mode == REPO_MODE_LNK) {
|
||||
/* svn symlink blobs start with "link " */
|
||||
buffer_skip_bytes(input, 5);
|
||||
len -= 5;
|
||||
}
|
||||
printf("blob\nmark :%"PRIu32"\ndata %"PRIu32"\n", mark, len);
|
||||
printf("data %"PRIu32"\n", len);
|
||||
buffer_copy_bytes(input, len);
|
||||
fputc('\n', stdout);
|
||||
}
|
||||
|
||||
static int parse_ls_response(const char *response, uint32_t *mode,
|
||||
struct strbuf *dataref)
|
||||
{
|
||||
const char *tab;
|
||||
const char *response_end;
|
||||
|
||||
assert(response);
|
||||
response_end = response + strlen(response);
|
||||
|
||||
if (*response == 'm') { /* Missing. */
|
||||
errno = ENOENT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Mode. */
|
||||
if (response_end - response < strlen("100644") ||
|
||||
response[strlen("100644")] != ' ')
|
||||
die("invalid ls response: missing mode: %s", response);
|
||||
*mode = 0;
|
||||
for (; *response != ' '; response++) {
|
||||
char ch = *response;
|
||||
if (ch < '0' || ch > '7')
|
||||
die("invalid ls response: mode is not octal: %s", response);
|
||||
*mode *= 8;
|
||||
*mode += ch - '0';
|
||||
}
|
||||
|
||||
/* ' blob ' or ' tree ' */
|
||||
if (response_end - response < strlen(" blob ") ||
|
||||
(response[1] != 'b' && response[1] != 't'))
|
||||
die("unexpected ls response: not a tree or blob: %s", response);
|
||||
response += strlen(" blob ");
|
||||
|
||||
/* Dataref. */
|
||||
tab = memchr(response, '\t', response_end - response);
|
||||
if (!tab)
|
||||
die("invalid ls response: missing tab: %s", response);
|
||||
strbuf_add(dataref, response, tab - response);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int fast_export_ls_rev(uint32_t rev, uint32_t depth, const uint32_t *path,
|
||||
uint32_t *mode, struct strbuf *dataref)
|
||||
{
|
||||
ls_from_rev(rev, depth, path);
|
||||
return parse_ls_response(get_response_line(), mode, dataref);
|
||||
}
|
||||
|
||||
int fast_export_ls(uint32_t depth, const uint32_t *path,
|
||||
uint32_t *mode, struct strbuf *dataref)
|
||||
{
|
||||
ls_from_active_commit(depth, path);
|
||||
return parse_ls_response(get_response_line(), mode, dataref);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,19 +1,25 @@
|
|||
#ifndef FAST_EXPORT_H_
|
||||
#define FAST_EXPORT_H_
|
||||
|
||||
#include "line_buffer.h"
|
||||
struct strbuf;
|
||||
struct line_buffer;
|
||||
|
||||
void fast_export_init(int fd);
|
||||
void fast_export_deinit(void);
|
||||
void fast_export_reset(void);
|
||||
|
||||
void fast_export_delete(uint32_t depth, uint32_t *path);
|
||||
void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
|
||||
uint32_t mark);
|
||||
void fast_export_begin_commit(uint32_t revision);
|
||||
void fast_export_commit(uint32_t revision, uint32_t author, char *log,
|
||||
void fast_export_delete(uint32_t depth, const uint32_t *path);
|
||||
void fast_export_modify(uint32_t depth, const uint32_t *path,
|
||||
uint32_t mode, const char *dataref);
|
||||
void fast_export_begin_commit(uint32_t revision, uint32_t author, char *log,
|
||||
uint32_t uuid, uint32_t url, unsigned long timestamp);
|
||||
void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len,
|
||||
struct line_buffer *input);
|
||||
void fast_export_end_commit(uint32_t revision);
|
||||
void fast_export_data(uint32_t mode, uint32_t len, struct line_buffer *input);
|
||||
|
||||
/* If there is no such file at that rev, returns -1, errno == ENOENT. */
|
||||
int fast_export_ls_rev(uint32_t rev, uint32_t depth, const uint32_t *path,
|
||||
uint32_t *mode_out, struct strbuf *dataref_out);
|
||||
int fast_export_ls(uint32_t depth, const uint32_t *path,
|
||||
uint32_t *mode_out, struct strbuf *dataref_out);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -4,322 +4,61 @@
|
|||
*/
|
||||
|
||||
#include "git-compat-util.h"
|
||||
|
||||
#include "string_pool.h"
|
||||
#include "strbuf.h"
|
||||
#include "repo_tree.h"
|
||||
#include "obj_pool.h"
|
||||
#include "fast_export.h"
|
||||
|
||||
#include "trp.h"
|
||||
|
||||
struct repo_dirent {
|
||||
uint32_t name_offset;
|
||||
struct trp_node children;
|
||||
uint32_t mode;
|
||||
uint32_t content_offset;
|
||||
};
|
||||
|
||||
struct repo_dir {
|
||||
struct trp_root entries;
|
||||
};
|
||||
|
||||
struct repo_commit {
|
||||
uint32_t root_dir_offset;
|
||||
};
|
||||
|
||||
/* Memory pools for commit, dir and dirent */
|
||||
obj_pool_gen(commit, struct repo_commit, 4096)
|
||||
obj_pool_gen(dir, struct repo_dir, 4096)
|
||||
obj_pool_gen(dent, struct repo_dirent, 4096)
|
||||
|
||||
static uint32_t active_commit;
|
||||
static uint32_t mark;
|
||||
|
||||
static int repo_dirent_name_cmp(const void *a, const void *b);
|
||||
|
||||
/* Treap for directory entries */
|
||||
trp_gen(static, dent_, struct repo_dirent, children, dent, repo_dirent_name_cmp);
|
||||
|
||||
uint32_t next_blob_mark(void)
|
||||
const char *repo_read_path(const uint32_t *path)
|
||||
{
|
||||
return mark++;
|
||||
}
|
||||
int err;
|
||||
uint32_t dummy;
|
||||
static struct strbuf buf = STRBUF_INIT;
|
||||
|
||||
static struct repo_dir *repo_commit_root_dir(struct repo_commit *commit)
|
||||
{
|
||||
return dir_pointer(commit->root_dir_offset);
|
||||
}
|
||||
|
||||
static struct repo_dirent *repo_first_dirent(struct repo_dir *dir)
|
||||
{
|
||||
return dent_first(&dir->entries);
|
||||
}
|
||||
|
||||
static int repo_dirent_name_cmp(const void *a, const void *b)
|
||||
{
|
||||
const struct repo_dirent *dent1 = a, *dent2 = b;
|
||||
uint32_t a_offset = dent1->name_offset;
|
||||
uint32_t b_offset = dent2->name_offset;
|
||||
return (a_offset > b_offset) - (a_offset < b_offset);
|
||||
}
|
||||
|
||||
static int repo_dirent_is_dir(struct repo_dirent *dent)
|
||||
{
|
||||
return dent != NULL && dent->mode == REPO_MODE_DIR;
|
||||
}
|
||||
|
||||
static struct repo_dir *repo_dir_from_dirent(struct repo_dirent *dent)
|
||||
{
|
||||
if (!repo_dirent_is_dir(dent))
|
||||
strbuf_reset(&buf);
|
||||
err = fast_export_ls(REPO_MAX_PATH_DEPTH, path, &dummy, &buf);
|
||||
if (err) {
|
||||
if (errno != ENOENT)
|
||||
die_errno("BUG: unexpected fast_export_ls error");
|
||||
return NULL;
|
||||
return dir_pointer(dent->content_offset);
|
||||
}
|
||||
|
||||
static struct repo_dir *repo_clone_dir(struct repo_dir *orig_dir)
|
||||
{
|
||||
uint32_t orig_o, new_o;
|
||||
orig_o = dir_offset(orig_dir);
|
||||
if (orig_o >= dir_pool.committed)
|
||||
return orig_dir;
|
||||
new_o = dir_alloc(1);
|
||||
orig_dir = dir_pointer(orig_o);
|
||||
*dir_pointer(new_o) = *orig_dir;
|
||||
return dir_pointer(new_o);
|
||||
}
|
||||
|
||||
static struct repo_dirent *repo_read_dirent(uint32_t revision,
|
||||
const uint32_t *path)
|
||||
{
|
||||
uint32_t name = 0;
|
||||
struct repo_dirent *key = dent_pointer(dent_alloc(1));
|
||||
struct repo_dir *dir = NULL;
|
||||
struct repo_dirent *dent = NULL;
|
||||
dir = repo_commit_root_dir(commit_pointer(revision));
|
||||
while (~(name = *path++)) {
|
||||
key->name_offset = name;
|
||||
dent = dent_search(&dir->entries, key);
|
||||
if (dent == NULL || !repo_dirent_is_dir(dent))
|
||||
break;
|
||||
dir = repo_dir_from_dirent(dent);
|
||||
}
|
||||
dent_free(1);
|
||||
return dent;
|
||||
}
|
||||
|
||||
static void repo_write_dirent(const uint32_t *path, uint32_t mode,
|
||||
uint32_t content_offset, uint32_t del)
|
||||
{
|
||||
uint32_t name, revision, dir_o = ~0, parent_dir_o = ~0;
|
||||
struct repo_dir *dir;
|
||||
struct repo_dirent *key;
|
||||
struct repo_dirent *dent = NULL;
|
||||
revision = active_commit;
|
||||
dir = repo_commit_root_dir(commit_pointer(revision));
|
||||
dir = repo_clone_dir(dir);
|
||||
commit_pointer(revision)->root_dir_offset = dir_offset(dir);
|
||||
while (~(name = *path++)) {
|
||||
parent_dir_o = dir_offset(dir);
|
||||
|
||||
key = dent_pointer(dent_alloc(1));
|
||||
key->name_offset = name;
|
||||
|
||||
dent = dent_search(&dir->entries, key);
|
||||
if (dent == NULL)
|
||||
dent = key;
|
||||
else
|
||||
dent_free(1);
|
||||
|
||||
if (dent == key) {
|
||||
dent->mode = REPO_MODE_DIR;
|
||||
dent->content_offset = 0;
|
||||
dent = dent_insert(&dir->entries, dent);
|
||||
}
|
||||
|
||||
if (dent_offset(dent) < dent_pool.committed) {
|
||||
dir_o = repo_dirent_is_dir(dent) ?
|
||||
dent->content_offset : ~0;
|
||||
dent_remove(&dir->entries, dent);
|
||||
dent = dent_pointer(dent_alloc(1));
|
||||
dent->name_offset = name;
|
||||
dent->mode = REPO_MODE_DIR;
|
||||
dent->content_offset = dir_o;
|
||||
dent = dent_insert(&dir->entries, dent);
|
||||
}
|
||||
|
||||
dir = repo_dir_from_dirent(dent);
|
||||
dir = repo_clone_dir(dir);
|
||||
dent->content_offset = dir_offset(dir);
|
||||
}
|
||||
if (dent == NULL)
|
||||
return;
|
||||
dent->mode = mode;
|
||||
dent->content_offset = content_offset;
|
||||
if (del && ~parent_dir_o)
|
||||
dent_remove(&dir_pointer(parent_dir_o)->entries, dent);
|
||||
}
|
||||
|
||||
uint32_t repo_read_path(const uint32_t *path)
|
||||
{
|
||||
uint32_t content_offset = 0;
|
||||
struct repo_dirent *dent = repo_read_dirent(active_commit, path);
|
||||
if (dent != NULL)
|
||||
content_offset = dent->content_offset;
|
||||
return content_offset;
|
||||
return buf.buf;
|
||||
}
|
||||
|
||||
uint32_t repo_read_mode(const uint32_t *path)
|
||||
{
|
||||
struct repo_dirent *dent = repo_read_dirent(active_commit, path);
|
||||
if (dent == NULL)
|
||||
die("invalid dump: path to be modified is missing");
|
||||
return dent->mode;
|
||||
int err;
|
||||
uint32_t result;
|
||||
static struct strbuf dummy = STRBUF_INIT;
|
||||
|
||||
strbuf_reset(&dummy);
|
||||
err = fast_export_ls(REPO_MAX_PATH_DEPTH, path, &result, &dummy);
|
||||
if (err) {
|
||||
if (errno != ENOENT)
|
||||
die_errno("BUG: unexpected fast_export_ls error");
|
||||
/* Treat missing paths as directories. */
|
||||
return REPO_MODE_DIR;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
void repo_copy(uint32_t revision, const uint32_t *src, const uint32_t *dst)
|
||||
{
|
||||
uint32_t mode = 0, content_offset = 0;
|
||||
struct repo_dirent *src_dent;
|
||||
src_dent = repo_read_dirent(revision, src);
|
||||
if (src_dent != NULL) {
|
||||
mode = src_dent->mode;
|
||||
content_offset = src_dent->content_offset;
|
||||
repo_write_dirent(dst, mode, content_offset, 0);
|
||||
}
|
||||
}
|
||||
int err;
|
||||
uint32_t mode;
|
||||
static struct strbuf data = STRBUF_INIT;
|
||||
|
||||
void repo_add(uint32_t *path, uint32_t mode, uint32_t blob_mark)
|
||||
{
|
||||
repo_write_dirent(path, mode, blob_mark, 0);
|
||||
strbuf_reset(&data);
|
||||
err = fast_export_ls_rev(revision, REPO_MAX_PATH_DEPTH, src, &mode, &data);
|
||||
if (err) {
|
||||
if (errno != ENOENT)
|
||||
die_errno("BUG: unexpected fast_export_ls_rev error");
|
||||
fast_export_delete(REPO_MAX_PATH_DEPTH, dst);
|
||||
return;
|
||||
}
|
||||
fast_export_modify(REPO_MAX_PATH_DEPTH, dst, mode, data.buf);
|
||||
}
|
||||
|
||||
void repo_delete(uint32_t *path)
|
||||
{
|
||||
repo_write_dirent(path, 0, 0, 1);
|
||||
}
|
||||
|
||||
static void repo_git_add_r(uint32_t depth, uint32_t *path, struct repo_dir *dir);
|
||||
|
||||
static void repo_git_add(uint32_t depth, uint32_t *path, struct repo_dirent *dent)
|
||||
{
|
||||
if (repo_dirent_is_dir(dent))
|
||||
repo_git_add_r(depth, path, repo_dir_from_dirent(dent));
|
||||
else
|
||||
fast_export_modify(depth, path,
|
||||
dent->mode, dent->content_offset);
|
||||
}
|
||||
|
||||
static void repo_git_add_r(uint32_t depth, uint32_t *path, struct repo_dir *dir)
|
||||
{
|
||||
struct repo_dirent *de = repo_first_dirent(dir);
|
||||
while (de) {
|
||||
path[depth] = de->name_offset;
|
||||
repo_git_add(depth + 1, path, de);
|
||||
de = dent_next(&dir->entries, de);
|
||||
}
|
||||
}
|
||||
|
||||
static void repo_diff_r(uint32_t depth, uint32_t *path, struct repo_dir *dir1,
|
||||
struct repo_dir *dir2)
|
||||
{
|
||||
struct repo_dirent *de1, *de2;
|
||||
de1 = repo_first_dirent(dir1);
|
||||
de2 = repo_first_dirent(dir2);
|
||||
|
||||
while (de1 && de2) {
|
||||
if (de1->name_offset < de2->name_offset) {
|
||||
path[depth] = de1->name_offset;
|
||||
fast_export_delete(depth + 1, path);
|
||||
de1 = dent_next(&dir1->entries, de1);
|
||||
continue;
|
||||
}
|
||||
if (de1->name_offset > de2->name_offset) {
|
||||
path[depth] = de2->name_offset;
|
||||
repo_git_add(depth + 1, path, de2);
|
||||
de2 = dent_next(&dir2->entries, de2);
|
||||
continue;
|
||||
}
|
||||
path[depth] = de1->name_offset;
|
||||
|
||||
if (de1->mode == de2->mode &&
|
||||
de1->content_offset == de2->content_offset) {
|
||||
; /* No change. */
|
||||
} else if (repo_dirent_is_dir(de1) && repo_dirent_is_dir(de2)) {
|
||||
repo_diff_r(depth + 1, path,
|
||||
repo_dir_from_dirent(de1),
|
||||
repo_dir_from_dirent(de2));
|
||||
} else if (!repo_dirent_is_dir(de1) && !repo_dirent_is_dir(de2)) {
|
||||
repo_git_add(depth + 1, path, de2);
|
||||
} else {
|
||||
fast_export_delete(depth + 1, path);
|
||||
repo_git_add(depth + 1, path, de2);
|
||||
}
|
||||
de1 = dent_next(&dir1->entries, de1);
|
||||
de2 = dent_next(&dir2->entries, de2);
|
||||
}
|
||||
while (de1) {
|
||||
path[depth] = de1->name_offset;
|
||||
fast_export_delete(depth + 1, path);
|
||||
de1 = dent_next(&dir1->entries, de1);
|
||||
}
|
||||
while (de2) {
|
||||
path[depth] = de2->name_offset;
|
||||
repo_git_add(depth + 1, path, de2);
|
||||
de2 = dent_next(&dir2->entries, de2);
|
||||
}
|
||||
}
|
||||
|
||||
static uint32_t path_stack[REPO_MAX_PATH_DEPTH];
|
||||
|
||||
void repo_diff(uint32_t r1, uint32_t r2)
|
||||
{
|
||||
repo_diff_r(0,
|
||||
path_stack,
|
||||
repo_commit_root_dir(commit_pointer(r1)),
|
||||
repo_commit_root_dir(commit_pointer(r2)));
|
||||
}
|
||||
|
||||
void repo_commit(uint32_t revision, uint32_t author, char *log, uint32_t uuid,
|
||||
uint32_t url, unsigned long timestamp)
|
||||
{
|
||||
fast_export_commit(revision, author, log, uuid, url, timestamp);
|
||||
dent_commit();
|
||||
dir_commit();
|
||||
active_commit = commit_alloc(1);
|
||||
commit_pointer(active_commit)->root_dir_offset =
|
||||
commit_pointer(active_commit - 1)->root_dir_offset;
|
||||
}
|
||||
|
||||
static void mark_init(void)
|
||||
{
|
||||
uint32_t i;
|
||||
mark = 1024 * 1024 * 1024;
|
||||
for (i = 0; i < dent_pool.size; i++)
|
||||
if (!repo_dirent_is_dir(dent_pointer(i)) &&
|
||||
dent_pointer(i)->content_offset > mark)
|
||||
mark = dent_pointer(i)->content_offset;
|
||||
mark++;
|
||||
}
|
||||
|
||||
void repo_init(void)
|
||||
{
|
||||
mark_init();
|
||||
if (commit_pool.size == 0) {
|
||||
/* Create empty tree for commit 0. */
|
||||
commit_alloc(1);
|
||||
commit_pointer(0)->root_dir_offset = dir_alloc(1);
|
||||
dir_pointer(0)->entries.trp_root = ~0;
|
||||
dir_commit();
|
||||
}
|
||||
/* Preallocate next commit, ready for changes. */
|
||||
active_commit = commit_alloc(1);
|
||||
commit_pointer(active_commit)->root_dir_offset =
|
||||
commit_pointer(active_commit - 1)->root_dir_offset;
|
||||
}
|
||||
|
||||
void repo_reset(void)
|
||||
{
|
||||
pool_reset();
|
||||
commit_reset();
|
||||
dir_reset();
|
||||
dent_reset();
|
||||
fast_export_delete(REPO_MAX_PATH_DEPTH, path);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@
|
|||
uint32_t next_blob_mark(void);
|
||||
void repo_copy(uint32_t revision, const uint32_t *src, const uint32_t *dst);
|
||||
void repo_add(uint32_t *path, uint32_t mode, uint32_t blob_mark);
|
||||
uint32_t repo_read_path(const uint32_t *path);
|
||||
const char *repo_read_path(const uint32_t *path);
|
||||
uint32_t repo_read_mode(const uint32_t *path);
|
||||
void repo_delete(uint32_t *path);
|
||||
void repo_commit(uint32_t revision, uint32_t author, char *log, uint32_t uuid,
|
||||
|
|
|
|||
|
|
@ -65,7 +65,7 @@ uint32_t pool_tok_r(char *str, const char *delim, char **saveptr)
|
|||
return token ? pool_intern(token) : ~0;
|
||||
}
|
||||
|
||||
void pool_print_seq(uint32_t len, uint32_t *seq, char delim, FILE *stream)
|
||||
void pool_print_seq(uint32_t len, const uint32_t *seq, char delim, FILE *stream)
|
||||
{
|
||||
uint32_t i;
|
||||
for (i = 0; i < len && ~seq[i]; i++) {
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@
|
|||
uint32_t pool_intern(const char *key);
|
||||
const char *pool_fetch(uint32_t entry);
|
||||
uint32_t pool_tok_r(char *str, const char *delim, char **saveptr);
|
||||
void pool_print_seq(uint32_t len, uint32_t *seq, char delim, FILE *stream);
|
||||
void pool_print_seq(uint32_t len, const uint32_t *seq, char delim, FILE *stream);
|
||||
uint32_t pool_tok_seq(uint32_t sz, uint32_t *seq, const char *delim, char *str);
|
||||
void pool_reset(void);
|
||||
|
||||
|
|
|
|||
|
|
@ -36,6 +36,8 @@ obj_pool_gen(log, char, 4096)
|
|||
|
||||
static struct line_buffer input = LINE_BUFFER_INIT;
|
||||
|
||||
#define REPORT_FILENO 3
|
||||
|
||||
static char *log_copy(uint32_t length, const char *log)
|
||||
{
|
||||
char *buffer;
|
||||
|
|
@ -202,15 +204,21 @@ static void read_props(void)
|
|||
|
||||
static void handle_node(void)
|
||||
{
|
||||
uint32_t mark = 0;
|
||||
const uint32_t type = node_ctx.type;
|
||||
const int have_props = node_ctx.propLength != LENGTH_UNKNOWN;
|
||||
const int have_text = node_ctx.textLength != LENGTH_UNKNOWN;
|
||||
/*
|
||||
* Old text for this node:
|
||||
* NULL - directory or bug
|
||||
* empty_blob - empty
|
||||
* "<dataref>" - data retrievable from fast-import
|
||||
*/
|
||||
static const char *const empty_blob = "::empty::";
|
||||
const char *old_data = NULL;
|
||||
|
||||
if (node_ctx.text_delta)
|
||||
die("text deltas not supported");
|
||||
if (have_text)
|
||||
mark = next_blob_mark();
|
||||
|
||||
if (node_ctx.action == NODEACT_DELETE) {
|
||||
if (have_text || have_props || node_ctx.srcRev)
|
||||
die("invalid dump: deletion node has "
|
||||
|
|
@ -230,15 +238,15 @@ static void handle_node(void)
|
|||
die("invalid dump: directories cannot have text attached");
|
||||
|
||||
/*
|
||||
* Decide on the new content (mark) and mode (node_ctx.type).
|
||||
* Find old content (old_data) and decide on the new mode.
|
||||
*/
|
||||
if (node_ctx.action == NODEACT_CHANGE && !~*node_ctx.dst) {
|
||||
if (type != REPO_MODE_DIR)
|
||||
die("invalid dump: root of tree is not a regular file");
|
||||
old_data = NULL;
|
||||
} else if (node_ctx.action == NODEACT_CHANGE) {
|
||||
uint32_t mode;
|
||||
if (!have_text)
|
||||
mark = repo_read_path(node_ctx.dst);
|
||||
old_data = repo_read_path(node_ctx.dst);
|
||||
mode = repo_read_mode(node_ctx.dst);
|
||||
if (mode == REPO_MODE_DIR && type != REPO_MODE_DIR)
|
||||
die("invalid dump: cannot modify a directory into a file");
|
||||
|
|
@ -246,7 +254,11 @@ static void handle_node(void)
|
|||
die("invalid dump: cannot modify a file into a directory");
|
||||
node_ctx.type = mode;
|
||||
} else if (node_ctx.action == NODEACT_ADD) {
|
||||
if (!have_text && type != REPO_MODE_DIR)
|
||||
if (type == REPO_MODE_DIR)
|
||||
old_data = NULL;
|
||||
else if (have_text)
|
||||
old_data = empty_blob;
|
||||
else
|
||||
die("invalid dump: adds node without text");
|
||||
} else {
|
||||
die("invalid dump: Node-path block lacks Node-action");
|
||||
|
|
@ -265,24 +277,34 @@ static void handle_node(void)
|
|||
/*
|
||||
* Save the result.
|
||||
*/
|
||||
repo_add(node_ctx.dst, node_ctx.type, mark);
|
||||
if (have_text)
|
||||
fast_export_blob(node_ctx.type, mark,
|
||||
node_ctx.textLength, &input);
|
||||
if (type == REPO_MODE_DIR) /* directories are not tracked. */
|
||||
return;
|
||||
assert(old_data);
|
||||
if (old_data == empty_blob)
|
||||
/* For the fast_export_* functions, NULL means empty. */
|
||||
old_data = NULL;
|
||||
if (!have_text) {
|
||||
fast_export_modify(REPO_MAX_PATH_DEPTH, node_ctx.dst,
|
||||
node_ctx.type, old_data);
|
||||
return;
|
||||
}
|
||||
fast_export_modify(REPO_MAX_PATH_DEPTH, node_ctx.dst,
|
||||
node_ctx.type, "inline");
|
||||
fast_export_data(node_ctx.type, node_ctx.textLength, &input);
|
||||
}
|
||||
|
||||
static void begin_revision(void)
|
||||
{
|
||||
if (!rev_ctx.revision) /* revision 0 gets no git commit. */
|
||||
return;
|
||||
fast_export_begin_commit(rev_ctx.revision);
|
||||
fast_export_begin_commit(rev_ctx.revision, rev_ctx.author, rev_ctx.log,
|
||||
dump_ctx.uuid, dump_ctx.url, rev_ctx.timestamp);
|
||||
}
|
||||
|
||||
static void end_revision(void)
|
||||
{
|
||||
if (rev_ctx.revision)
|
||||
repo_commit(rev_ctx.revision, rev_ctx.author, rev_ctx.log,
|
||||
dump_ctx.uuid, dump_ctx.url, rev_ctx.timestamp);
|
||||
fast_export_end_commit(rev_ctx.revision);
|
||||
}
|
||||
|
||||
void svndump_read(const char *url)
|
||||
|
|
@ -383,7 +405,6 @@ int svndump_init(const char *filename)
|
|||
{
|
||||
if (buffer_init(&input, filename))
|
||||
return error("cannot open %s: %s", filename, strerror(errno));
|
||||
repo_init();
|
||||
fast_export_init(REPORT_FILENO);
|
||||
reset_dump_ctx(~0);
|
||||
reset_rev_ctx(0);
|
||||
|
|
@ -396,7 +417,6 @@ void svndump_deinit(void)
|
|||
{
|
||||
log_reset();
|
||||
fast_export_deinit();
|
||||
repo_reset();
|
||||
reset_dump_ctx(~0);
|
||||
reset_rev_ctx(0);
|
||||
reset_node_ctx(NULL);
|
||||
|
|
@ -411,7 +431,6 @@ void svndump_reset(void)
|
|||
log_reset();
|
||||
fast_export_reset();
|
||||
buffer_reset(&input);
|
||||
repo_reset();
|
||||
reset_dump_ctx(~0);
|
||||
reset_rev_ctx(0);
|
||||
reset_node_ctx(NULL);
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче