extract.c

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/***************************************************************************
 begin       : Sat Jun 25 2011
 copyright   : (C) 2011 by Martin Preuss
 email       : martin@libchipcard.de
 
 ***************************************************************************
 *          Please see toplevel file COPYING for license details           *
 ***************************************************************************/
 
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
 
#include "globals.h"
 
#include <gwenhywfar/debug.h>
#include <gwenhywfar/sar.h>
 
 
 
 
int extractArchive(GWEN_DB_NODE *dbArgs, int argc, char **argv)
{
  GWEN_DB_NODE *db;
  const char *aname;
  GWEN_SAR *sr;
  int rv;
  int verbosity;
  const GWEN_ARGS args[]= {
    {
      GWEN_ARGS_FLAGS_HAS_ARGUMENT,     /* flags */
      GWEN_ArgsType_Char,               /* type */
      "archive",                        /* name */
      1,                                /* minnum */
      1,                                /* maxnum */
      "a",                              /* short option */
      "archive",                        /* long option */
      "Specify the archive file name",  /* short description */
      "Specify the archive file name"   /* long description */
    },
    {
      0, /* flags */
      GWEN_ArgsType_Int,                /* type */
      "verbosity",                      /* name */
      0,                                /* minnum */
      10,                                /* maxnum */
      "v",                              /* short option */
      NULL,                             /* long option */
      "set verbosity",                  /* short description */
      "set verbosity"                   /* long description */
    },
    {
      GWEN_ARGS_FLAGS_HELP | GWEN_ARGS_FLAGS_LAST, /* flags */
      GWEN_ArgsType_Int,             /* type */
      "help",                       /* name */
      0,                            /* minnum */
      0,                            /* maxnum */
      "h",                          /* short option */
      "help",                       /* long option */
      "Show this help screen",      /* short description */
      "Show this help screen"       /* long description */
    }
  };
 
  db=GWEN_DB_GetGroup(dbArgs, GWEN_DB_FLAGS_DEFAULT, "local");
  rv=GWEN_Args_Check(argc, argv, 1,
                     GWEN_ARGS_MODE_ALLOW_FREEPARAM,
                     args,
                     db);
  if (rv==GWEN_ARGS_RESULT_ERROR) {
    fprintf(stderr, "ERROR: Could not parse arguments\n");
    return 1;
  }
  else if (rv==GWEN_ARGS_RESULT_HELP) {
    GWEN_BUFFER *ubuf;
 
    ubuf=GWEN_Buffer_new(0, 1024, 0, 1);
    if (GWEN_Args_Usage(args, ubuf, GWEN_ArgsOutType_Txt)) {
      fprintf(stderr, "ERROR: Could not create help string\n");
      return 1;
    }
    fprintf(stderr, "%s\n", GWEN_Buffer_GetStart(ubuf));
    GWEN_Buffer_free(ubuf);
    return 0;
  }
 
  aname=GWEN_DB_GetCharValue(db, "archive", 0, NULL);
  assert(aname);
 
  verbosity=GWEN_DB_GetIntValue(db, "verbosity", 0, 0);
 
  sr=GWEN_Sar_new();
  rv=GWEN_Sar_OpenArchive(sr, aname,
                          GWEN_SyncIo_File_CreationMode_OpenExisting,
                          GWEN_SYNCIO_FILE_FLAGS_READ);
  if (rv<0) {
    fprintf(stderr, "ERROR: Error opening archive (%d)\n", rv);
    return 2;
  }
  else {
    const GWEN_SAR_FILEHEADER_LIST *fhl;
 
    fhl=GWEN_Sar_GetHeaders(sr);
    if (fhl) {
      const GWEN_SAR_FILEHEADER *fh;
 
      fh=GWEN_SarFileHeader_List_First(fhl);
      while (fh) {
        const char *s;
 
        s=GWEN_SarFileHeader_GetPath(fh);
        if (s && *s) {
          rv=GWEN_Sar_ExtractFile(sr, fh);
          if (rv<0) {
            DBG_INFO(GWEN_LOGDOMAIN, "here (%d)", rv);
            GWEN_Sar_CloseArchive(sr, 1);
            GWEN_Sar_free(sr);
            return rv;
          }
          if (verbosity>0) {
            fprintf(stdout, "extracted \"%s\"\n", s);
          }
        }
        fh=GWEN_SarFileHeader_List_Next(fh);
      }
    }
 
    rv=GWEN_Sar_CloseArchive(sr, 0);
    if (rv<0) {
      fprintf(stderr, "ERROR: Error closing archive (%d)\n", rv);
      return 2;
    }
 
    return 0;
  }
}