Fossil

    blob_zero(&setting);
    blob_appendf(&versionedPathname, "%s.fossil-settings/%s",
                 g.zLocalRoot, zName);
    if( !g.localOpen ){
      /* Repository is in the process of being opened, but files have not been
       * written to disk. Load from the database. */
      Blob noWarnFile;

      if( historical_blob(g.zOpenRevision, blob_str(&versionedPathname),
          &setting, 0) ){
        found = 1;
      }
      /* See if there's a no-warn flag */
      blob_append(&versionedPathname, ".no-warn", -1);
      blob_zero(&noWarnFile);

      if( historical_blob(g.zOpenRevision, blob_str(&versionedPathname),
          &noWarnFile, 0) ){
        noWarn = 1;
      }
      blob_reset(&noWarnFile);
    }else if( file_size(blob_str(&versionedPathname))>=0 ){
      /* File exists, and contains the value for this setting. Load from
      ** the file. */
      if( blob_read_from_file(&setting, blob_str(&versionedPathname))>=0 ){

    const char *zRevision = find_option("revision", "r", 1);

    /* We should be done with options.. */
    verify_all_options();

    file_tree_name(g.argv[2], &fname, 0, 1);
    if( zRevision ){
      historical_blob(zRevision, blob_str(&fname), &record, 1);
    }else{
      int rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B %s",
                       &fname, filename_collation());
      if( rid==0 ){
        fossil_fatal("no history for file: %b", &fname);
      }
      content_get(rid, &record);

**    -R|--repository FILE       Extract artifacts from repository FILE
**    -r VERSION                 The specific check-in containing the file
**
** See also: finfo
*/
void cat_cmd(void){
  int i;

  Blob content, fname;
  const char *zRev;
  db_find_and_open_repository(0, 0);
  zRev = find_option("r","r",1);

  /* We should be done with options.. */
  verify_all_options();

  for(i=2; i<g.argc; i++){
    file_tree_name(g.argv[i], &fname, 0, 1);
    blob_zero(&content);
    historical_blob(zRev, blob_str(&fname), &content, 1);



    blob_write_to_file(&content, "-");
    blob_reset(&fname);
    blob_reset(&content);
  }
}

/* Values for the debug= query parameter to finfo */

      blob_reset(&dirName);
    }
    blob_reset(&dirsList);
    fossil_free(zEmptyDirs);
  }
}

/*
** Get the manifest record for a given revision, or the current checkout if
** zRevision is NULL.
*/
Manifest *historical_manifest(
  const char *zRevision    /* The check-in to query, or NULL for current */
){
  int vid;
  Manifest *pManifest;

  /* Determine the check-in manifest artifact ID.  Panic on failure. */
  if( zRevision ){
    vid = name_to_typed_rid(zRevision, "ci");
  }else if( !g.localOpen ){
    vid = name_to_typed_rid(db_get("main-branch", "trunk"), "ci");
  }else{
    vid = db_lget_int("checkout", 0);
    if( !is_a_version(vid) ){
      zRevision = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
      if( zRevision ){
        fossil_fatal("checkout artifact is not a check-in: %s", zRevision);
      }else{
        fossil_fatal("invalid checkout artifact ID: %d", vid);
      }
    }
  }

  /* Parse the manifest, given its artifact ID.  Panic on failure. */
  if( !(pManifest = manifest_get(vid, CFTYPE_MANIFEST, 0)) ){
    if( zRevision ){
      fossil_fatal("could not parse manifest for check-in: %s", zRevision);
    }else{
      fossil_fatal("could not parse manifest for current checkout");
    }
  }

  /* Return the manifest pointer.  The caller must use manifest_destroy() to
   * clean up when finished using the manifest. */
  return pManifest;
}

/*
** Get the contents of a file within the check-in "zRevision".  If
** zRevision==NULL then get the file content for the current checkout.
*/
int historical_blob(
  const char *zRevision,   /* The check-in containing the file */
  const char *zFile,       /* Full treename of the file */
  Blob *pBlob,             /* Put the content here */
  int fatal                /* If nonzero, panic if file/artifact not found */



){
  int result = 0;

  /* Get the manifest for the requested check-in version.  This call unavoidably
   * panics on failure even if fatal is not set. */
  Manifest *pManifest = historical_manifest(zRevision);

  /* Try to find the file record within the manifest. */
  ManifestFile *pFile = manifest_file_find(pManifest, zFile);


  if( !pFile ){
    /* Process file-not-found errors. */
    if( fatal ){
      if( zRevision ){
        fossil_fatal("file %s does not exist in check-in %s", zFile, zRevision);


      }else{




        fossil_fatal("no such file: %s", zFile);
      }

    }
  }else{
    /* Get the file's contents. */
    result = content_get(fast_uuid_to_rid(pFile->zUuid), pBlob);

    /* Process artifact-not-found errors. */
    if( !result && fatal ){
      if( zRevision ){
        fossil_fatal("missing artifact %s for file %s in check-in %s",
            pFile->zUuid, zFile, zRevision);

      }else{
        fossil_fatal("missing artifact %s for file %s", pFile->zUuid, zFile);



      }

    }



  }




  /* Deallocate the parsed manifest structure. */
  manifest_destroy(pManifest);

  /* Return 1 on success and (assuming fatal is not set) 0 if not found. */
  return result;
}


/*
** COMMAND: revert
**
** Usage: %fossil revert ?-r REVISION? ?FILE ...?
**
** Revert to the current repository version of FILE, or to

**
** Options:
**   -r REVISION    revert given FILE(s) back to given REVISION
**
** See also: redo, undo, update
*/
void revert_cmd(void){
  Manifest *pCoManifest;          /* Manifest of current checkout */
  Manifest *pRvManifest;          /* Manifest of selected revert version */
  ManifestFile *pCoFile;          /* File within current checkout manifest */
  ManifestFile *pRvFile;          /* File within revert version manifest */
  const char *zFile;              /* Filename relative to checkout root */
  const char *zRevision;          /* Selected revert version, NULL if current */
  Blob record = BLOB_INITIALIZER; /* Contents of each reverted file */
  int i;

  Stmt q;

  undo_capture_command_line();
  zRevision = find_option("revision", "r", 1);
  verify_all_options();

  if( g.argc<2 ){
    usage("?OPTIONS? [FILE] ...");
  }
  if( zRevision && g.argc<3 ){
    fossil_fatal("the --revision option does not work for the entire tree");
  }
  db_must_be_within_tree();

  /* Get manifests of revert version and (if different) current checkout. */
  pRvManifest = historical_manifest(zRevision);
  pCoManifest = zRevision ? historical_manifest(0) : 0;

  db_begin_transaction();
  undo_begin();
  db_multi_exec("CREATE TEMP TABLE torevert(name UNIQUE);");

  if( g.argc>2 ){
    for(i=2; i<g.argc; i++){
      Blob fname;

  blob_zero(&record);
  db_prepare(&q, "SELECT name FROM torevert");
  if( zRevision==0 ){
    int vid = db_lget_int("checkout", 0);
    zRevision = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
  }
  while( db_step(&q)==SQLITE_ROW ){


    char *zFull;
    zFile = db_column_text(&q, 0);
    zFull = mprintf("%/%/", g.zLocalRoot, zFile);
    pRvFile = manifest_file_find(pRvManifest, zFile);

    if( !pRvFile ){
      if( db_int(0, "SELECT rid FROM vfile WHERE pathname=%Q OR origname=%Q",
                 zFile, zFile)==0 ){
        fossil_print("UNMANAGE %s\n", zFile);
      }else{
        undo_save(zFile);
        file_delete(zFull);
        fossil_print("DELETE   %s\n", zFile);
      }
      db_multi_exec(
        "UPDATE OR REPLACE vfile"
        "   SET pathname=origname, origname=NULL"
        " WHERE pathname=%Q AND origname!=pathname;"
        "DELETE FROM vfile WHERE pathname=%Q",
        zFile, zFile
      );
    }else{
      sqlite3_int64 mtime;
      int rvChnged = 0;
      int rvPerm = manifest_file_mperm(pRvFile);

      /* Determine if reverted-to file is different than checked out file. */
      if( pCoManifest && (pCoFile = manifest_file_find(pCoManifest, zFile)) ){
        rvChnged = manifest_file_mperm(pRvFile)!=rvPerm
                || fossil_strcmp(pRvFile->zUuid, pCoFile->zUuid)!=0;
      }

      /* Get contents of reverted-to file. */
      content_get(fast_uuid_to_rid(pRvFile->zUuid), &record);

      undo_save(zFile);
      if( file_wd_size(zFull)>=0 && (rvPerm==PERM_LNK || file_wd_islink(0)) ){
        file_delete(zFull);
      }
      if( rvPerm==PERM_LNK ){
        symlink_create(blob_str(&record), zFull);
      }else{
        blob_write_to_file(&record, zFull);
      }
      file_wd_setexe(zFull, rvPerm==PERM_EXE);
      fossil_print("REVERT   %s\n", zFile);
      mtime = file_wd_mtime(zFull);
      db_multi_exec(
         "UPDATE vfile"
         "   SET mtime=%lld, chnged=%d, deleted=0, isexe=%d, islink=%d,mrid=rid"
         " WHERE pathname=%Q OR origname=%Q",
         mtime, rvChnged, rvPerm==PERM_EXE, rvPerm==PERM_LNK, zFile, zFile
      );
    }
    blob_reset(&record);
    free(zFull);
  }
  db_finalize(&q);
  undo_finish();
  db_end_transaction(0);

  /* Deallocate parsed manifest structures. */
  manifest_destroy(pRvManifest);
  manifest_destroy(pCoManifest);
}