** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to import the content of a Git 
** repository in the git-fast-import format as a new Fossil
** repository.
*/
#include "config.h"
#include "import.h"
#include <assert.h>

#if INTERFACE
/*
** A single file change record.
*/
struct ImportFile { 
  char *zName;           /* Name of a file */
  char *zUuid;           /* UUID of the file */
  char *zPrior;          /* Prior name if the name was changed */
  char isFrom;           /* True if obtained from the parent */
  char isExe;            /* True if executable */
  char isLink;           /* True if symlink */
};

  return z;
}

/*
** A no-op "xFinish" method
*/
static void finish_noop(void){}
   
/*
** Deallocate the state information.
**
** The azMerge[] and aFile[] arrays are zeroed by allocated space is
** retained unless the freeAll flag is set.
*/
static void import_reset(int freeAll){

    db_reset(&ins);
    blob_reset(&cmpr);
    rid = db_last_insert_rowid();
  }
  if( zMark ){
    db_multi_exec(
        "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
        "VALUES(%Q,%d,%B)", 
        zMark, rid, &hash
    );
    db_multi_exec(
        "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
        "VALUES(%B,%d,%B)", 
        &hash, rid, &hash
    );
  }
  if( saveUuid ){
    fossil_free(gg.zPrevCheckin);
    gg.zPrevCheckin = fossil_strdup(blob_str(&hash));
  }

  blob_init(&content, gg.aData, gg.nData);
  fast_insert_content(&content, gg.zMark, 0);
  blob_reset(&content);
  import_reset(0);
}

/*
** Use data accumulated in gg from a "tag" record to add a new 
** control artifact to the BLOB table.
*/
static void finish_tag(void){
  Blob record, cksum;
  if( gg.zDate && gg.zTag && gg.zFrom && gg.zUser ){
    blob_zero(&record);
    blob_appendf(&record, "D %s\n", gg.zDate);

  return fossil_strcmp(zLeft, zRight);
}

/* Forward reference */
static void import_prior_files(void);

/*
** Use data accumulated in gg from a "commit" record to add a new 
** manifest artifact to the BLOB table.
*/
static void finish_commit(void){
  int i;
  char *zFromBranch;
  char *aTCard[4];                /* Array of T cards for manifest */
  int nTCard = 0;                 /* Entries used in aTCard[] */

static void import_prior_files(void){
  Manifest *p;
  int rid;
  ManifestFile *pOld;
  ImportFile *pNew;
  if( gg.fromLoaded ) return;
  gg.fromLoaded = 1;
  if( gg.zFrom==0 && gg.zPrevCheckin!=0 
   && fossil_strcmp(gg.zBranch, gg.zPrevBranch)==0
  ){
     gg.zFrom = gg.zPrevCheckin;
     gg.zPrevCheckin = 0;
  }
  if( gg.zFrom==0 ) return;
  rid = fast_uuid_to_rid(gg.zFrom);

  return 0;
}

/*
** Dequote a fast-export filename.  Filenames are normally unquoted.  But
** if the contain some obscure special characters, quotes might be added.
*/
static dequote_git_filename(char *zName){
  int n, i, j;
  if( zName==0 || zName[0]!='"' ) return;
  n = (int)strlen(zName);
  if( zName[n-1]!='"' ) return;
  for(i=0, j=1; j<n-1; j++){
    char c = zName[j];
    if( c=='\\' ) c = zName[++j];

      i = 0;
      pFile = import_find_file(zName, &i, gg.nFile);
      if( pFile==0 ){
        pFile = import_add_file();
        pFile->zName = fossil_strdup(zName);
      }
      pFile->isExe = (fossil_strcmp(zPerm, "100755")==0);
      pFile->isLink = (fossil_strcmp(zPerm, "120000")==0);      
      fossil_free(pFile->zUuid);
      pFile->zUuid = resolve_committish(zUuid);
      pFile->isFrom = 0;
    }else
    if( memcmp(zLine, "D ", 2)==0 ){
      import_prior_files();
      z = &zLine[2];

  db_open_repository(g.argv[2]);
  db_open_config(0);

  /* The following temp-tables are used to hold information needed for
  ** the import.
  **
  ** The XMARK table provides a mapping from fast-import "marks" and symbols
  ** into artifact ids (UUIDs - the 40-byte hex SHA1 hash of artifacts). 
  ** Given any valid fast-import symbol, the corresponding fossil rid and
  ** uuid can found by searching against the xmark.tname field.
  **
  ** The XBRANCH table maps commit marks and symbols into the branch those
  ** commits belong to.  If xbranch.tname is a fast-import symbol for a
  ** checkin then xbranch.brnm is the branch that checkin is part of.
  **