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one_process.c
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one_process.c
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/*
Author: Bassel Ashi
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <float.h>
#include "worker.h"
int main(int argc, char **argv)
{
char ch;
char path[PATHLENGTH];
char *startdir = ".";
char *image_file = NULL;
while ((ch = getopt(argc, argv, "d:")) != -1)
{
switch (ch)
{
case 'd':
startdir = optarg;
break;
default:
fprintf(stderr, "Usage: queryone [-d DIRECTORY_NAME] FILE_NAME\n");
exit(1);
}
}
if (optind != argc - 1)
{
fprintf(stderr, "Usage: queryone [-d DIRECTORY_NAME] FILE_NAME\n");
exit(1);
}
else
image_file = argv[optind];
// Open the directory provided by the user (or current working directory)
DIR *dirp;
if ((dirp = opendir(startdir)) == NULL)
{
perror("opendir");
exit(1);
}
/* For each entry in the directory, eliminate . and .., and check
* to make sure that the entry is a directory, then call run_worker
* to process the image files contained in the directory.
*/
Image *img = read_image(image_file); // Read given image
// Invalid image
if (img == NULL)
{
fprintf(stderr, "Invalid image input!\n");
exit(1);
}
struct dirent *dp;
CompRecord CRec;
strcpy(CRec.filename, "");
CRec.distance = FLT_MAX;
while ((dp = readdir(dirp)) != NULL)
{
if (strcmp(dp->d_name, ".") == 0 ||
strcmp(dp->d_name, "..") == 0 ||
strcmp(dp->d_name, ".svn") == 0)
{
continue;
}
strncpy(path, startdir, PATHLENGTH);
strncat(path, "/", PATHLENGTH - strlen(path) - 1);
strncat(path, dp->d_name, PATHLENGTH - strlen(path) - 1);
struct stat sbuf;
if (stat(path, &sbuf) == -1)
{
//This should only fail if we got the path wrong
// or we don't have permissions on this entry.
perror("stat");
exit(1);
}
// Only call process_dir if it is a directory
// Otherwise ignore it.
if (S_ISDIR(sbuf.st_mode))
{
printf("Processing all images in directory: %s \n", path);
CompRecord tempCR;
tempCR = process_dir(path, img, -1);
// Compare found CR with current CR
if (tempCR.distance < CRec.distance)
{
strcpy(CRec.filename, tempCR.filename);
CRec.distance = tempCR.distance;
}
}
}
free(img->p);
free(img);
printf("The most similar image is %s with a distance of %f\n", CRec.filename, CRec.distance);
return 0;
}