view dump.cpp @ 562:dfeb5ef768da

Usually a commitment phobe but everybody has they're first time. Include mant structural changes and additional definition in line with what Christophe has asked for. Some of the schemas are more complicated than Id like - I will try to think of more elegant ways of specification.

extern "C" {
#include "audioDB_API.h"
}
#include "audioDB-internals.h"

int audiodb_dump(adb_t *adb, const char *output) {
  char *fileTable = 0; /* key_table */
  double *timesTable = 0; /* timestamps_table */
  double *powerTable = 0; /* power_table */

  size_t fileTableLength = 0;
  size_t timesTableLength = 0;
  size_t powerTableLength = 0;

  char *featureFileNameTable = 0;
  char *powerFileNameTable = 0;
  char *timesFileNameTable = 0;
 
  char cwd[PATH_MAX];
  int directory_changed = 0;

  int fLfd = 0, tLfd = 0, pLfd = 0, kLfd = 0;
  FILE *fLFile = 0, *tLFile = 0, *pLFile = 0, *kLFile = 0;

  int times, power;

  char fName[256];
  int ffd, pfd;
  FILE *tFile;
  unsigned pos = 0;
  double *data_buffer;
  size_t data_buffer_size;
  FILE *scriptFile = 0;

  unsigned nfiles = adb->header->numFiles;

  if(adb->header->length > 0) {
    fileTableLength = align_page_up(nfiles * ADB_FILETABLE_ENTRY_SIZE);
    if(!(adb->header->flags & ADB_HEADER_FLAG_REFERENCES)) {
      off_t length = adb->header->length;
      unsigned dim = adb->header->dim;
      timesTableLength = align_page_up(2*length/dim);
      powerTableLength = align_page_up(length/dim);
    }

    mmap_or_goto_error(char *, fileTable, adb->header->fileTableOffset, fileTableLength);
    if (adb->header->flags & ADB_HEADER_FLAG_REFERENCES) {
      mmap_or_goto_error(char *, featureFileNameTable, adb->header->dataOffset, fileTableLength);
      mmap_or_goto_error(char *, powerFileNameTable, adb->header->powerTableOffset, fileTableLength);
      mmap_or_goto_error(char *, timesFileNameTable, adb->header->timesTableOffset, fileTableLength);
    } else {
      mmap_or_goto_error(double *, powerTable, adb->header->powerTableOffset, powerTableLength);
      mmap_or_goto_error(double *, timesTable, adb->header->timesTableOffset, timesTableLength);
    }
  }

  if((mkdir(output, S_IRWXU|S_IRWXG|S_IRWXO)) < 0) {
    goto error;
  }

  if ((getcwd(cwd, PATH_MAX)) == 0) {
    goto error;
  }

  /* FIXME: Hrm.  How does chdir(2) interact with threads?  Does each
   * thread have its own working directory? */
  if((chdir(output)) < 0) {
    goto error;
  }
  directory_changed = 1;

  if ((fLfd = open("featureList.txt", O_CREAT|O_RDWR|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) {
    goto error;
  }

  times = adb->header->flags & ADB_HEADER_FLAG_TIMES;
  if (times) {
    if ((tLfd = open("timesList.txt", O_CREAT|O_RDWR|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) {
      goto error;
    }
  }

  power = adb->header->flags & ADB_HEADER_FLAG_POWER;
  if (power) {
    if ((pLfd = open("powerList.txt", O_CREAT|O_RDWR|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) {
      goto error;
    }
  }

  if ((kLfd = open("keyList.txt", O_CREAT|O_RDWR|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) {
    goto error;
  }
  
  /* can these fail?  I sincerely hope not. */
  fLFile = fdopen(fLfd, "w");
  if (times) {
    tLFile = fdopen(tLfd, "w");
  }
  if (power) {
    pLFile = fdopen(pLfd, "w");
  }
  kLFile = fdopen(kLfd, "w");

  lseek(adb->fd, adb->header->dataOffset, SEEK_SET);

  for(unsigned k = 0; k < nfiles; k++) {
    fprintf(kLFile, "%s\n", fileTable + k*ADB_FILETABLE_ENTRY_SIZE);
    if(adb->header->flags & ADB_HEADER_FLAG_REFERENCES) {
      char *featureFileName = featureFileNameTable+k*ADB_FILETABLE_ENTRY_SIZE;
      if(*featureFileName != '/') {
        goto error;
      }
      fprintf(fLFile, "%s\n", featureFileName);
      if(times) {
	char *timesFileName = timesFileNameTable + k*ADB_FILETABLE_ENTRY_SIZE;
	if(*timesFileName != '/') {
          goto error;
	}
	fprintf(tLFile, "%s\n", timesFileName);
      }
      if(power) {
	char *powerFileName = powerFileNameTable + k*ADB_FILETABLE_ENTRY_SIZE;
	if(*powerFileName != '/') {
          goto error;
	}
	fprintf(pLFile, "%s\n", powerFileName);
      }
    } else {
      snprintf(fName, 256, "%05d.features", k);
      if ((ffd = open(fName, O_CREAT|O_RDWR|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) {
        goto error;
      }
      write_or_goto_error(ffd, &(adb->header->dim), sizeof(uint32_t));
      
      /* FIXME: this repeated malloc()/free() of data buffers is
	 inefficient. */
      data_buffer_size = (*adb->track_lengths)[k] * adb->header->dim * sizeof(double);
      
      {
	void *tmp = malloc(data_buffer_size);
	if (tmp == NULL) {
          goto error;
	}
	data_buffer = (double *) tmp;
      }
      
      if ((read(adb->fd, data_buffer, data_buffer_size)) != (ssize_t) data_buffer_size) {
        goto error;
      }
      
      write_or_goto_error(ffd, data_buffer, data_buffer_size);
      
      free(data_buffer);
      
      fprintf(fLFile, "%s\n", fName);
      close(ffd);
      ffd = 0;

      if (times) {
	snprintf(fName, 256, "%05d.times", k);
	tFile = fopen(fName, "w");
	for(unsigned i = 0; i < (*adb->track_lengths)[k]; i++) {
	  // KLUDGE: specifying 16 digits of precision after the decimal
	  // point is (but check this!) sufficient to uniquely identify
	  // doubles; however, that will cause ugliness, as that's
	  // vastly too many for most values of interest.  Moving to %a
	  // here and scanf() in the timesFile reading might fix this.
	  // -- CSR, 2007-10-19
	  fprintf(tFile, "%.16e\n", *(timesTable + 2*pos + 2*i));
	}
	fprintf(tFile, "%.16e\n", *(timesTable + 2*pos + 2*(*adb->track_lengths)[k]-1));
        fclose(tFile);
	
	fprintf(tLFile, "%s\n", fName);
      }
      
      if (power) {
	uint32_t one = 1;
	snprintf(fName, 256, "%05d.power", k);
	if ((pfd = open(fName, O_CREAT|O_RDWR|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0) {
          goto error;
	}
        write_or_goto_error(pfd, &one, sizeof(uint32_t));
        write_or_goto_error(pfd, powerTable + pos, (*adb->track_lengths)[k] * sizeof(double));
	fprintf(pLFile, "%s\n", fName);
	close(pfd);
        pfd = 0;
      } 
      
      pos += (*adb->track_lengths)[k];
      std::cout << fileTable+k*ADB_FILETABLE_ENTRY_SIZE << " " << (*adb->track_lengths)[k] << std::endl;
    }
  }

  scriptFile = fopen("restore.sh", "w");
  fprintf(scriptFile, "\
#! /bin/sh\n\
#\n\
# usage: AUDIODB=/path/to/audioDB sh ./restore.sh <newdb>\n\
\n\
if [ -z \"${AUDIODB}\" ]; then echo set AUDIODB variable; exit 1; fi\n\
if [ -z \"$1\" ]; then echo usage: $0 newdb; exit 1; fi\n\n\
\"${AUDIODB}\" -d \"$1\" -N --datasize=%d --ntracks=%d --datadim=%d\n",
          (int) ((adb->header->timesTableOffset - adb->header->dataOffset) / (1024*1024)),
          // fileTable entries (char[256]) are bigger than trackTable
          // (int), so the granularity of page aligning is finer.
          (int) ((adb->header->trackTableOffset - adb->header->fileTableOffset) / ADB_FILETABLE_ENTRY_SIZE),
          (int) ceil(((double) (adb->header->timesTableOffset - adb->header->dataOffset)) / ((double) (adb->header->dbSize - adb->header->l2normTableOffset))));
  if(adb->header->flags & ADB_HEADER_FLAG_L2NORM) {
    fprintf(scriptFile, "\"${AUDIODB}\" -d \"$1\" -L\n");
  }
  if(power) {
    fprintf(scriptFile, "\"${AUDIODB}\" -d \"$1\" -P\n");
  }
  fprintf(scriptFile, "\"${AUDIODB}\" -d \"$1\" -B -F featureList.txt -K keyList.txt");
  if(times) {
    fprintf(scriptFile, " -T timesList.txt");
  }
  if(power) {
    fprintf(scriptFile, " -W powerList.txt");
  }
  fprintf(scriptFile, "\n");
  fclose(scriptFile);

  fclose(fLFile);
  if(times) {
    fclose(tLFile);
  }
  if(power) {
    fclose(pLFile);
  }
  fclose(kLFile);
    
  maybe_munmap(fileTable, fileTableLength);
  maybe_munmap(timesTable, timesTableLength);
  maybe_munmap(powerTable, powerTableLength);
  maybe_munmap(featureFileNameTable, fileTableLength);
  maybe_munmap(timesFileNameTable, fileTableLength);
  maybe_munmap(powerFileNameTable, fileTableLength);

  if((chdir(cwd)) < 0) {
    /* don't goto error because the error handling will try to
     * chdir() */
    return 1;
  }

  return 0;

 error:
  if(fLFile) {
    fclose(fLFile);
  } else if(fLfd) {
    close(fLfd);
  }
  if(tLFile) {
    fclose(tLFile);
  } else if(tLfd) {
    close(fLfd);
  }
  if(pLFile) {
    fclose(pLFile);
  } else if(pLfd) {
    close(pLfd);
  }
  if(kLFile) {
    fclose(kLFile);
  } else if(kLfd) {
    close(kLfd);
  }
  if(scriptFile) {
    fclose(scriptFile);
  }

  maybe_munmap(fileTable, fileTableLength);
  maybe_munmap(timesTable, timesTableLength);
  maybe_munmap(powerTable, powerTableLength);
  maybe_munmap(featureFileNameTable, fileTableLength);
  maybe_munmap(timesFileNameTable, fileTableLength);
  maybe_munmap(powerFileNameTable, fileTableLength);

  if(directory_changed) {
    int gcc_warning_workaround = chdir(cwd);
    directory_changed = gcc_warning_workaround;
  }
  return 1;
}