vcs-svn/fast_export.c

   1 /*
   2  * Licensed under a two-clause BSD-style license.
   3  * See LICENSE for details.
   4  */
   5
   6 #include "git-compat-util.h"
   7 #include "fast_export.h"
   8 #include "line_buffer.h"
   9 #include "repo_tree.h"
  10 #include "string_pool.h"
  11
  12 #define MAX_GITSVN_LINE_LEN 4096
  13
  14 static uint32_t first_commit_done;
  15
  16 void fast_export_delete(uint32_t depth, uint32_t *path)
  17 {
  18         putchar('D');
  19         putchar(' ');
  20         pool_print_seq(depth, path, '/', stdout);
  21         putchar('\n');
  22 }
  23
  24 void fast_export_modify(uint32_t depth, uint32_t *path, uint32_t mode,
  25                         uint32_t mark)
  26 {
  27         /* Mode must be 100644, 100755, 120000, or 160000. */
  28         printf("M %06"PRIo32" :%"PRIu32" ", mode, mark);
  29         pool_print_seq(depth, path, '/', stdout);
  30         putchar('\n');
  31 }
  32
  33 static char gitsvnline[MAX_GITSVN_LINE_LEN];
  34 void fast_export_commit(uint32_t revision, const char *author,
  35                         const struct strbuf *log,
  36                         const char *uuid, const char *url,
  37                         unsigned long timestamp)
  38 {
  39         static const struct strbuf empty = STRBUF_INIT;
  40         if (!log)
  41                 log = &empty;
  42         if (*uuid && *url) {
  43                 snprintf(gitsvnline, MAX_GITSVN_LINE_LEN,
  44                                 "\n\ngit-svn-id: %s@%"PRIu32" %s\n",
  45                                  url, revision, uuid);
  46         } else {
  47                 *gitsvnline = '\0';
  48         }
  49         printf("commit refs/heads/master\n");
  50         printf("committer %s <%s@%s> %ld +0000\n",
  51                    *author ? author : "nobody",
  52                    *author ? author : "nobody",
  53                    *uuid ? uuid : "local", timestamp);
  54         printf("data %"PRIuMAX"\n",
  55                 (uintmax_t) (log->len + strlen(gitsvnline)));
  56         fwrite(log->buf, log->len, 1, stdout);
  57         printf("%s\n", gitsvnline);
  58         if (!first_commit_done) {
  59                 if (revision > 1)
  60                         printf("from refs/heads/master^0\n");
  61                 first_commit_done = 1;
  62         }
  63         repo_diff(revision - 1, revision);
  64         fputc('\n', stdout);
  65
  66         printf("progress Imported commit %"PRIu32".\n\n", revision);
  67 }
  68
  69 static void die_short_read(struct line_buffer *input)
  70 {
  71         if (buffer_ferror(input))
  72                 die_errno("error reading dump file");
  73         die("invalid dump: unexpected end of file");
  74 }
  75
  76 void fast_export_blob(uint32_t mode, uint32_t mark, uint32_t len, struct line_buffer *input)
  77 {
  78         if (mode == REPO_MODE_LNK) {
  79                 /* svn symlink blobs start with "link " */
  80                 len -= 5;
  81                 if (buffer_skip_bytes(input, 5) != 5)
  82                         die_short_read(input);
  83         }
  84         printf("blob\nmark :%"PRIu32"\ndata %"PRIu32"\n", mark, len);
  85         if (buffer_copy_bytes(input, len) != len)
  86                 die_short_read(input);
  87         fputc('\n', stdout);
  88 }