*/
#include <time.h>
#include "cache.h"
-#include "diff.h"
+#include "tree-walk.h"
#include "commit.h"
#include "strbuf.h"
#include "tar.h"
#define RECORDSIZE (512)
#define BLOCKSIZE (RECORDSIZE * 20)
-#define EXT_HEADER_PATH 1
-#define EXT_HEADER_LINKPATH 2
-
static const char tar_tree_usage[] = "git-tar-tree <key> [basedir]";
static char block[BLOCKSIZE];
static unsigned long offset;
-static const char *basedir;
static time_t archive_time;
-struct path_prefix {
- struct path_prefix *prev;
- const char *name;
-};
-
/* tries hard to write, either succeeds or dies in the attempt */
static void reliable_write(void *buf, unsigned long size)
{
}
if (size) {
memcpy(block + offset, buf, size);
- buf += size;
offset += size;
}
tail = offset % RECORDSIZE;
return chksum;
}
+static int get_path_prefix(const struct strbuf *path, int maxlen)
+{
+ int i = path->len;
+ if (i > maxlen)
+ i = maxlen;
+ while (i > 0 && path->buf[i] != '/')
+ i--;
+ return i;
+}
+
static void write_entry(const unsigned char *sha1, struct strbuf *path,
unsigned int mode, void *buffer, unsigned long size)
{
return;
}
if (path->len > sizeof(header.name)) {
- sprintf(header.name, "%s.data", sha1_to_hex(sha1));
- strbuf_append_ext_header(&ext_header, "path",
- path->buf, path->len);
+ int plen = get_path_prefix(path, sizeof(header.prefix));
+ int rest = path->len - plen - 1;
+ if (plen > 0 && rest <= sizeof(header.name)) {
+ memcpy(header.prefix, path->buf, plen);
+ memcpy(header.name, path->buf + plen + 1, rest);
+ } else {
+ sprintf(header.name, "%s.data",
+ sha1_to_hex(sha1));
+ strbuf_append_ext_header(&ext_header, "path",
+ path->buf, path->len);
+ }
} else
memcpy(header.name, path->buf, path->len);
}
write_blocked(buffer, size);
}
-static void append_string(char **p, const char *s)
-{
- unsigned int len = strlen(s);
- memcpy(*p, s, len);
- *p += len;
-}
-
-static void append_char(char **p, char c)
-{
- **p = c;
- *p += 1;
-}
-
-static void append_path_prefix(char **buffer, struct path_prefix *prefix)
-{
- if (!prefix)
- return;
- append_path_prefix(buffer, prefix->prev);
- append_string(buffer, prefix->name);
- append_char(buffer, '/');
-}
-
-static unsigned int path_prefix_len(struct path_prefix *prefix)
-{
- if (!prefix)
- return 0;
- return path_prefix_len(prefix->prev) + strlen(prefix->name) + 1;
-}
-
-static void append_path(char **p, int is_dir, const char *basepath,
- struct path_prefix *prefix, const char *path)
-{
- if (basepath) {
- append_string(p, basepath);
- append_char(p, '/');
- }
- append_path_prefix(p, prefix);
- append_string(p, path);
- if (is_dir)
- append_char(p, '/');
-}
-
-static unsigned int path_len(int is_dir, const char *basepath,
- struct path_prefix *prefix, const char *path)
-{
- unsigned int len = 0;
- if (basepath)
- len += strlen(basepath) + 1;
- len += path_prefix_len(prefix) + strlen(path);
- if (is_dir)
- len++;
- return len;
-}
-
-static void append_extended_header_prefix(char **p, unsigned int size,
- const char *keyword)
-{
- int len = sprintf(*p, "%u %s=", size, keyword);
- *p += len;
-}
-
-static unsigned int extended_header_len(const char *keyword,
- unsigned int valuelen)
-{
- /* "%u %s=%s\n" */
- unsigned int len = 1 + 1 + strlen(keyword) + 1 + valuelen + 1;
- if (len > 9)
- len++;
- if (len > 99)
- len++;
- return len;
-}
-
-static void append_extended_header(char **p, const char *keyword,
- const char *value, unsigned int len)
-{
- unsigned int size = extended_header_len(keyword, len);
- append_extended_header_prefix(p, size, keyword);
- memcpy(*p, value, len);
- *p += len;
- append_char(p, '\n');
-}
-
-static void write_header(const unsigned char *, char, const char *, struct path_prefix *,
- const char *, unsigned int, void *, unsigned long);
-
-/* stores a pax extended header directly in the block buffer */
-static void write_extended_header(const char *headerfilename, int is_dir,
- unsigned int flags, const char *basepath,
- struct path_prefix *prefix,
- const char *path, unsigned int namelen,
- void *content, unsigned int contentsize)
-{
- char *buffer, *p;
- unsigned int pathlen, size, linkpathlen = 0;
-
- size = pathlen = extended_header_len("path", namelen);
- if (flags & EXT_HEADER_LINKPATH) {
- linkpathlen = extended_header_len("linkpath", contentsize);
- size += linkpathlen;
- }
- write_header(NULL, TYPEFLAG_EXT_HEADER, NULL, NULL, headerfilename,
- 0100600, NULL, size);
-
- buffer = p = malloc(size);
- if (!buffer)
- die("git-tar-tree: %s", strerror(errno));
- append_extended_header_prefix(&p, pathlen, "path");
- append_path(&p, is_dir, basepath, prefix, path);
- append_char(&p, '\n');
- if (flags & EXT_HEADER_LINKPATH)
- append_extended_header(&p, "linkpath", content, contentsize);
- write_blocked(buffer, size);
- free(buffer);
-}
-
static void write_global_extended_header(const unsigned char *sha1)
{
struct strbuf ext_header;
free(ext_header.buf);
}
-/* stores a ustar header directly in the block buffer */
-static void write_header(const unsigned char *sha1, char typeflag, const char *basepath,
- struct path_prefix *prefix, const char *path,
- unsigned int mode, void *buffer, unsigned long size)
-{
- unsigned int namelen;
- char *header = NULL;
- unsigned int checksum = 0;
- int i;
- unsigned int ext_header = 0;
-
- if (typeflag == TYPEFLAG_AUTO) {
- if (S_ISDIR(mode))
- typeflag = TYPEFLAG_DIR;
- else if (S_ISLNK(mode))
- typeflag = TYPEFLAG_LNK;
- else
- typeflag = TYPEFLAG_REG;
- }
-
- namelen = path_len(S_ISDIR(mode), basepath, prefix, path);
- if (namelen > 100)
- ext_header |= EXT_HEADER_PATH;
- if (typeflag == TYPEFLAG_LNK && size > 100)
- ext_header |= EXT_HEADER_LINKPATH;
-
- /* the extended header must be written before the normal one */
- if (ext_header) {
- char headerfilename[51];
- sprintf(headerfilename, "%s.paxheader", sha1_to_hex(sha1));
- write_extended_header(headerfilename, S_ISDIR(mode),
- ext_header, basepath, prefix, path,
- namelen, buffer, size);
- }
-
- header = get_record();
-
- if (ext_header) {
- sprintf(header, "%s.data", sha1_to_hex(sha1));
- } else {
- char *p = header;
- append_path(&p, S_ISDIR(mode), basepath, prefix, path);
- }
-
- if (typeflag == TYPEFLAG_LNK) {
- if (ext_header & EXT_HEADER_LINKPATH) {
- sprintf(&header[157], "see %s.paxheader",
- sha1_to_hex(sha1));
- } else {
- if (buffer)
- strncpy(&header[157], buffer, size);
- }
- }
-
- if (S_ISDIR(mode))
- mode |= 0777;
- else if (S_ISREG(mode))
- mode |= (mode & 0100) ? 0777 : 0666;
- else if (S_ISLNK(mode))
- mode |= 0777;
- sprintf(&header[100], "%07o", mode & 07777);
-
- /* XXX: should we provide more meaningful info here? */
- sprintf(&header[108], "%07o", 0); /* uid */
- sprintf(&header[116], "%07o", 0); /* gid */
- strncpy(&header[265], "git", 31); /* uname */
- strncpy(&header[297], "git", 31); /* gname */
-
- if (S_ISDIR(mode) || S_ISLNK(mode))
- size = 0;
- sprintf(&header[124], "%011lo", size);
- sprintf(&header[136], "%011lo", archive_time);
-
- header[156] = typeflag;
-
- memcpy(&header[257], "ustar", 6);
- memcpy(&header[263], "00", 2);
-
- sprintf(&header[329], "%07o", 0); /* devmajor */
- sprintf(&header[337], "%07o", 0); /* devminor */
-
- memset(&header[148], ' ', 8);
- for (i = 0; i < RECORDSIZE; i++)
- checksum += header[i];
- sprintf(&header[148], "%07o", checksum & 0x1fffff);
-
- write_if_needed();
-}
-
static void traverse_tree(struct tree_desc *tree, struct strbuf *path)
{
int pathlen = path->len;
current_path.len = current_path.eof = 0;
setup_git_directory();
+ git_config(git_default_config);
switch (argc) {
case 3:
} else
archive_time = time(NULL);
- tree.buf = read_object_with_reference(sha1, "tree", &tree.size,
+ tree.buf = read_object_with_reference(sha1, tree_type, &tree.size,
tree_sha1);
if (!tree.buf)
die("not a reference to a tag, commit or tree object: %s",
projects / git.git / blobdiff