Fossil

Check-in [4a480954]
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Overview
Comment:Fix the export so that it is able to handle phantom check-ins.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | mirror-cmd
Files: files | file ages | folders
SHA3-256:4a480954e7335eeab0e8dfa7c3b481d92cba718f987dfdcf555d1f0f5fc9dec4
User & Date: drh 2019-03-14 19:43:04
Context
2019-03-14
20:16
The mirror command is now able to export all of Fossil itself, though tags are still not exported. check-in: a3471a5e user: drh tags: mirror-cmd
19:43
Fix the export so that it is able to handle phantom check-ins. check-in: 4a480954 user: drh tags: mirror-cmd
18:55
Sanitize branch names to conform to Git restrictions. check-in: 11bcc4eb user: drh tags: mirror-cmd
Changes
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Changes to src/export.c.

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static void mirror_send_checkin(
  FILE *xCmd,           /* Write fast-import text on this pipe */
  int rid,              /* BLOB.RID for the check-in to export */
  const char *zUuid,    /* BLOB.UUID for the check-in to export */
  int *pnLimit          /* Stop when the counter reaches zero */
){
  Manifest *pMan;
  int i;
  Blob err;
  Stmt q;
  char *zBranch;
  int iMark;
  Blob sql;

  blob_init(&err, 0, 0);
  pMan = manifest_get(rid, CFTYPE_MANIFEST, &err);
  if( pMan==0 ){

    fossil_fatal("cannot fetch manifest for check-in %d: %s", rid, 
                 blob_str(&err));
  }

  /* Check to see if any parent logins have not yet been processed, and
  ** if so, create them */
  for(i=0; i<pMan->nParent; i++){
    int iMark = mirror_find_mark(pMan->azParent[i], 0);
    if( iMark<=0 ){
................................................................................
  zBranch = db_text(0,
    "SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0 AND rid=%d",
    TAG_BRANCH, rid
  );
  if( fossil_strcmp(zBranch,"trunk")==0 ){
    fossil_free(zBranch);
    zBranch = mprintf("master");


  }else{
    mirror_sanitize_git_name(zBranch);
  }

  /* Export the check-in */
  fprintf(xCmd, "commit refs/head/%s\n", zBranch);
  fossil_free(zBranch);
................................................................................
  fprintf(xCmd, "mark :%d\n", iMark);
  fprintf(xCmd, "committer %s <%s@noemail.net> %lld +0000\n",
     pMan->zUser, pMan->zUser, 
     (sqlite3_int64)((pMan->rDate-2440587.5)*86400.0)
  );
  fprintf(xCmd, "data %d\n", (int)strlen(pMan->zComment));
  fprintf(xCmd, "%s\n", pMan->zComment);

  for(i=0; i<pMan->nParent; i++){
    int iOther = mirror_find_mark(pMan->azParent[i], 0);

    if( i==0 ){

      fprintf(xCmd, "from :%d\n", iOther);
    }else{
      fprintf(xCmd, "merge :%d\n", iOther);
    }
  }
  if( pMan->nParent ){
    db_prepare(&q,
      "SELECT filename FROM files_of_checkin(%Q)"
      " EXCEPT SELECT filename FROM files_of_checkin(%Q)",
      pMan->azParent[0], zUuid
    );
    while( db_step(&q)==SQLITE_ROW ){
      fprintf(xCmd, "D %s\n", db_column_text(&q,0));
    }
    db_finalize(&q);
  }
  blob_init(&sql, 0, 0);
................................................................................
  FILE *xCmd;
  FILE *pIn, *pOut;
  Stmt q;
  char zLine[200];

  find_option("git", 0, 0);   /* Ignore the --git option for now */
  zDebug = find_option("debug",0,1);
  db_find_and_open_repository(0, 2);
  zLimit = find_option("limit", 0, 1);
  if( zLimit ){
    nLimit = (unsigned int)atoi(zLimit);
    if( nLimit<=0 ) fossil_fatal("--limit must be positive");
  }
  verify_all_options();
  if( g.argc!=3 ){ usage("--git MIRROR"); }







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static void mirror_send_checkin(
  FILE *xCmd,           /* Write fast-import text on this pipe */
  int rid,              /* BLOB.RID for the check-in to export */
  const char *zUuid,    /* BLOB.UUID for the check-in to export */
  int *pnLimit          /* Stop when the counter reaches zero */
){
  Manifest *pMan;
  int i, iParent;

  Stmt q;
  char *zBranch;
  int iMark;
  Blob sql;


  pMan = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( pMan==0 ){
    /* Must be a phantom.  Return without doing anything, and in particular
    ** without creating a mark for this check-in. */
    return;
  }

  /* Check to see if any parent logins have not yet been processed, and
  ** if so, create them */
  for(i=0; i<pMan->nParent; i++){
    int iMark = mirror_find_mark(pMan->azParent[i], 0);
    if( iMark<=0 ){
................................................................................
  zBranch = db_text(0,
    "SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0 AND rid=%d",
    TAG_BRANCH, rid
  );
  if( fossil_strcmp(zBranch,"trunk")==0 ){
    fossil_free(zBranch);
    zBranch = mprintf("master");
  }else if( zBranch==0 ){
    zBranch = mprintf("unknown");
  }else{
    mirror_sanitize_git_name(zBranch);
  }

  /* Export the check-in */
  fprintf(xCmd, "commit refs/head/%s\n", zBranch);
  fossil_free(zBranch);
................................................................................
  fprintf(xCmd, "mark :%d\n", iMark);
  fprintf(xCmd, "committer %s <%s@noemail.net> %lld +0000\n",
     pMan->zUser, pMan->zUser, 
     (sqlite3_int64)((pMan->rDate-2440587.5)*86400.0)
  );
  fprintf(xCmd, "data %d\n", (int)strlen(pMan->zComment));
  fprintf(xCmd, "%s\n", pMan->zComment);
  iParent = -1;  /* Which ancestor is the primary parent */
  for(i=0; i<pMan->nParent; i++){
    int iOther = mirror_find_mark(pMan->azParent[i], 0);
    if( iOther==0 ) continue;
    if( iParent<0 ){
      iParent = i;
      fprintf(xCmd, "from :%d\n", iOther);
    }else{
      fprintf(xCmd, "merge :%d\n", iOther);
    }
  }
  if( iParent>=0 ){
    db_prepare(&q,
      "SELECT filename FROM files_of_checkin(%Q)"
      " EXCEPT SELECT filename FROM files_of_checkin(%Q)",
      pMan->azParent[iParent], zUuid
    );
    while( db_step(&q)==SQLITE_ROW ){
      fprintf(xCmd, "D %s\n", db_column_text(&q,0));
    }
    db_finalize(&q);
  }
  blob_init(&sql, 0, 0);
................................................................................
  FILE *xCmd;
  FILE *pIn, *pOut;
  Stmt q;
  char zLine[200];

  find_option("git", 0, 0);   /* Ignore the --git option for now */
  zDebug = find_option("debug",0,1);
  db_find_and_open_repository(0, 0);
  zLimit = find_option("limit", 0, 1);
  if( zLimit ){
    nLimit = (unsigned int)atoi(zLimit);
    if( nLimit<=0 ) fossil_fatal("--limit must be positive");
  }
  verify_all_options();
  if( g.argc!=3 ){ usage("--git MIRROR"); }