/*
- * finddup is a simple utility to display the files and directories
- * according to their total disk occupancy.
+ * finddup is a simple utility find duplicated files, files common to
+ * several directories, or files present in one directory and not in
+ * another one.
*
* Copyright (c) 2010 Francois Fleuret
* Written by Francois Fleuret <francois@fleuret.org>
*
*/
+#define VERSION_NUMBER "0.6"
+
#define _BSD_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/param.h>
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#define BUFFER_SIZE 4096
+#define LARGE_BUFFER_SIZE 65536
typedef int64_t size_sum_t;
int ignore_dotfiles = 0; /* 1 means ignore files and directories
starting with a dot */
-int forced_width = 0; /* -1 means no width limit, strictly positive
- means limit, 0 means not active */
+int ignore_empty_files = 0; /* 1 means ignore empty files */
+
+int show_realpaths = 0; /* 1 means ignore files and directories
+ starting with a dot */
-int forced_height = 0; /* -1 means no height limit, strictly positive
- means limit, 0 means not active */
+int show_progress = 0; /* 1 means show a progress bar when we are in a
+ tty */
-int fancy_size_display = 0; /* 1 means to use floating values with K, M and G
- as units */
+int show_hits = 1; /* 1 means to show the files from dir2
+ corresponding to the ones from dir1 */
-int reverse_sorting = 0; /* 1 means to show the large ones first */
+int show_groups = 1; /* 1 means to show the group IDs when printing
+ file names */
-int show_top = 0; /* 1 means to show the top of the sorted list
- instead of the bottom */
+int ignore_same_inode = 0; /* 1 means that comparison between two file
+ with same inode will always be false */
/********************************************************************/
printf(a);
}
-size_sum_t file_or_dir_size(const char *name) {
- DIR *dir;
- struct dirent *dir_e;
- struct stat dummy;
- size_sum_t result;
- char subname[BUFFER_SIZE];
+/**********************************************************************/
+
+struct file_with_size {
+ char *filename;
+ size_t size;
+ ino_t inode;
+ struct file_with_size *next;
+ int group_id;
+};
+
+void file_list_delete(struct file_with_size *head) {
+ struct file_with_size *next;
+ while(head) {
+ next = head->next;
+ free(head->filename);
+ free(head);
+ head = next;
+ }
+}
+
+int file_list_length(struct file_with_size *head) {
+ int l = 0;
+ while(head) {
+ l++;
+ head = head->next;
+ }
+ return l;
+}
+
+/**********************************************************************/
+
+int same_content(struct file_with_size *f1, struct file_with_size *f2) {
+ int fd1, fd2, s1, s2;
+ char buffer1[LARGE_BUFFER_SIZE], buffer2[LARGE_BUFFER_SIZE];
+
+ fd1 = open(f1->filename, O_RDONLY);
+ fd2 = open(f2->filename, O_RDONLY);
+
+ if(fd1 >= 0 && fd2 >= 0) {
+ while(1) {
+ s1 = read(fd1, buffer1, LARGE_BUFFER_SIZE);
+ s2 = read(fd2, buffer2, LARGE_BUFFER_SIZE);
+
+ if(s1 < 0 || s2 < 0) {
+ close(fd1);
+ close(fd2);
+ return 0;
+ }
+
+ if(s1 == s2) {
+ if(s1 == 0) {
+ close(fd1);
+ close(fd2);
+ return 1;
+ } else {
+ if(memcmp(buffer1, buffer2, s1)) {
+ close(fd1);
+ close(fd2);
+ return 0;
+ }
+ }
+ } else {
+ fprintf(stderr,
+ "Different read size without error on files of same size.\n");
+ exit(EXIT_FAILURE);
+ }
+ }
+ } else {
- result = 0;
+ if(fd1 < 0) {
+ fprintf(stderr,
+ "Can not open \"%s\" error: %s\n",
+ f1->filename,
+ strerror(errno));
+ }
- if(lstat(name, &dummy) != 0) {
- printf("Can not stat %s: %s\n", name, strerror(errno));
+ if(fd2 < 0) {
+ fprintf(stderr,
+ "Can not open \"%s\" error: %s\n",
+ f2->filename,
+ strerror(errno));
+ }
exit(EXIT_FAILURE);
}
+}
- if(S_ISLNK(dummy.st_mode)) {
+int same_files(struct file_with_size *f1, struct file_with_size *f2) {
+ if(ignore_same_inode && f1->inode == f2->inode) {
return 0;
}
+ return f1->size == f2->size && same_content(f1, f2);
+}
+
+/**********************************************************************/
+
+struct file_with_size *scan_directory(struct file_with_size *tail,
+ const char *name) {
+ DIR *dir;
+ struct dirent *dir_e;
+ struct stat sb;
+ struct file_with_size *tmp;
+ char subname[PATH_MAX + 1];
+
+ if(lstat(name, &sb) != 0) {
+ fprintf(stderr, "Can not stat \"%s\": %s\n", name, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ if(S_ISLNK(sb.st_mode)) {
+ return tail;
+ }
dir = opendir(name);
if(dir) {
while((dir_e = readdir(dir))) {
if(!ignore_entry(dir_e->d_name)) {
- snprintf(subname, BUFFER_SIZE, "%s/%s", name, dir_e->d_name);
- result += file_or_dir_size(subname);
+ snprintf(subname, PATH_MAX, "%s/%s", name, dir_e->d_name);
+ tail = scan_directory(tail, subname);
}
}
closedir(dir);
} else {
- if(S_ISREG(dummy.st_mode)) {
- result += dummy.st_size;
+ if(S_ISREG(sb.st_mode)) {
+ if(!ignore_entry(name)) {
+ if(!ignore_empty_files || sb.st_size > 0) {
+ tmp = safe_malloc(sizeof(struct file_with_size));
+ tmp->next = tail;
+ tmp->filename = strdup(name);
+ tmp->size = sb.st_size;
+ tmp->inode = sb.st_ino;
+ tmp->group_id = -1;
+ tail = tmp;
+ }
+ }
}
}
- return result;
+ return tail;
}
-/**********************************************************************/
-
-struct file_with_size {
- char *filename;
- size_t size;
- struct file_with_size *next;
- int error;
-};
-
-struct file_list {
- struct file_with_size *head, *tail;
-};
-
-void merge(struct *file_list list1, struct *file_list list2) {
- if(list1->head && list2->head) {
- struct file_list result;
- result.head = list1.head;
+void print_file(struct file_with_size *node) {
+ char tmp[PATH_MAX + 1];
+ if(show_realpaths) {
+ if(show_groups) {
+ realpath(node->filename, tmp);
+ printf("%d %s\n", node->group_id, tmp);
+ } else {
+ realpath(node->filename, tmp);
+ printf("%s\n", tmp);
+ }
} else {
- if(list1.head) {
- return list1;
+ if(show_groups) {
+ printf("%d %s\n", node->group_id, node->filename);
} else {
- return list2;
+ printf("%s\n", node->filename);
}
}
}
-struct file_with_size *create(char *name, struct file_with_size *current) {
- struct file_with_size *result;
- result = safe_malloc(sizeof(struct file_with_size));
- result->filename = strdup(name);
- result->size = file_or_dir_size(name);
- result->next = current;
- return result;
-}
+int compare_nodes(const void *x1, const void *x2) {
+ const struct file_with_size **f1, **f2;
-void destroy(struct file_with_size *node) {
- struct file_with_size *next;
- while(node) {
- next = node->next;
- free(node->filename);
- free(node);
- node = next;
+ f1 = (const struct file_with_size **) x1;
+ f2 = (const struct file_with_size **) x2;
+
+ if((*f1)->group_id < (*f2)->group_id) {
+ return -1;
+ } else if((*f1)->group_id > (*f2)->group_id) {
+ return 1;
+ } else {
+ return 0;
}
}
-/**********************************************************************/
-int same_size(struct file_with_size *f1, struct file_with_size *f2) {
- return f1->size == f2->size;
-}
+void print_result(struct file_with_size *list1, struct file_with_size *list2) {
+ struct file_with_size *node1, *node2;
+ struct file_with_size **nodes;
+ int nb, n;
-int same_content(struct file_with_size *f1, struct file_with_size *f2) {
- int fd1, fd2, eq, s1, s2;
- char buffer1[BUFFER_SIZE], buffer2[BUFFER_SIZE];
+ nb = 0;
+ for(node1 = list1; node1; node1 = node1->next) {
+ if(node1->group_id >= 0) { nb++; }
+ }
- fd1 = open(f1->filename, O_RDONLY);
- fd2 = open(f2->filename, O_RDONLY);
- eq = 1;
+ if(list2) {
+ for(node2 = list2; node2; node2 = node2->next) {
+ if(node2->group_id >= 0) { nb++; }
+ }
+ }
- if(fd1 >= 0 && fd2 >= 0) {
- while(eq) {
- s1 = read(fd1, buffer1, BUFFER_SIZE);
- if(s1 < 0) {
- f1->error = 1;
- eq = 0;
- }
- s2 = read(fd2, buffer2, BUFFER_SIZE);
- if(s2 < 0) {
- f2->error = 1;
- eq = 0;
- }
- if(s1 > 0 && s2 > 0) {
- if(s1 == s2) {
- eq = (strncmp(buffer1, buffer2, s1) == 0);
- } else {
- fprintf(stderr,
- "Different read size without error on files of same size.\n");
- exit(EXIT_FAILURE);
- }
- }
+ nodes = safe_malloc(nb * sizeof(struct file_with_size *));
+
+ n = 0;
+ for(node1 = list1; node1; node1 = node1->next) {
+ if(node1->group_id >= 0) {
+ nodes[n++] = node1;
}
}
- if(fd1 >= 0) {
- close(fd1);
- } else {
- f1->error = 1;
- eq = 0;
+ if(list2) {
+ for(node2 = list2; node2; node2 = node2->next) {
+ if(node2->group_id >= 0) {
+ nodes[n++] = node2;
+ }
+ }
}
- if(fd2 >= 0) {
- close(fd2);
- } else {
- f2->error = 1;
- eq = 0;
+ qsort(nodes, nb, sizeof(struct file_with_size *), compare_nodes);
+
+ for(n = 0; n < nb; n++) {
+ if(!show_groups && n > 0 && nodes[n]->group_id != nodes[n-1]->group_id) {
+ printf("\n");
+ }
+ print_file(nodes[n]);
}
- return eq;
+ free(nodes);
}
-int same_files(struct file_with_size *f1, struct file_with_size *f2) {
- return same_size(f1, f2) && same_content(f1, f2);
-}
+void start(const char *dirname1, const char *dirname2) {
+ struct file_with_size *list1, *list2;
+ struct file_with_size *node1, *node2;
+ int not_in, found;
+ int k, p, pp, l1, n;
-/**********************************************************************/
+ not_in = 0;
-struct file_list scan_directory(const char *name) {
- DIR *dir;
- struct dirent *dir_e;
- struct file_list result, sublist;
- struct stat dummy;
- char subname[BUFFER_SIZE];
+ if(show_progress) {
+ fprintf(stderr, "Scanning %s ... ", dirname1);
+ }
- result.head = 0;
- result.tail = 0;
+ list1 = scan_directory(0, dirname1);
- if(lstat(name, &dummy) != 0) {
- fprintf(stderr, "Can not stat %s: %s\n", name, strerror(errno));
- exit(EXIT_FAILURE);
+ if(dirname2) {
+ if(strncmp(dirname2, "not:", 4) == 0) {
+ not_in = 1;
+ dirname2 += 4;
+ }
+ if(show_progress) {
+ fprintf(stderr, "%s ... ", dirname2);
+ }
+ list2 = scan_directory(0, dirname2);
+ } else {
+ list2 = list1;
}
- if(S_ISLNK(dummy.st_mode)) {
- return result;
+ if(show_progress) {
+ fprintf(stderr, "done.\n");
}
- dir = opendir(name);
+ k = 0;
+ pp = -1;
+ n = 0;
+ l1 = file_list_length(list1);
+
+ if(not_in) {
+ for(node1 = list1; node1; node1 = node1->next) {
+ if(show_progress) {
+ p = (100 * n)/l1;
+ if(p > pp) {
+ fprintf(stderr, "%d%%\n", p);
+ pp = p;
+ }
+ n++;
+ }
- if(dir) {
- while((dir_e = readdir(dir))) {
- if(!ignore_entry(dir_e->d_name)) {
- snprintf(subname, BUFFER_SIZE, "%s/%s", name, dir_e->d_name);
- sublist = scan_directory(subname);
- result = concat(result, sublist);
+ found = 0;
+
+ for(node2 = list2; !found && node2; node2 = node2->next) {
+ if(same_files(node1, node2)) {
+ found = 1;
+ }
+ }
+
+ if(!found) {
+ if(show_realpaths) {
+ printf("%s\n", realpath(node1->filename, 0));
+ } else {
+ printf("%s\n", node1->filename);
+ }
}
}
- closedir(dir);
+
} else {
- if(S_ISREG(dummy.st_mode)) {
- result += dummy.st_size;
+ for(node1 = list1; node1; node1 = node1->next) {
+ if(show_progress) {
+ p = (100 * n)/l1;
+ if(p > pp) {
+ fprintf(stderr, "%d%%\n", p);
+ pp = p;
+ }
+ n++;
+ }
+
+ for(node2 = list2; node2; node2 = node2->next) {
+ if(node1->group_id < 0 || node2->group_id < 0) {
+ if(same_files(node1, node2)) {
+ if(node1->group_id < 0) {
+ if(node2->group_id >= 0) {
+ node1->group_id = node2->group_id;
+ } else {
+ node1->group_id = k;
+ k++;
+ }
+ }
+ if(node2->group_id < 0) {
+ node2->group_id = node1->group_id;
+ }
+ }
+ }
+ }
}
}
- return result;
+ if(dirname2) {
+ print_result(list1, list2);
+ file_list_delete(list1);
+ file_list_delete(list2);
+ } else {
+ print_result(list1, 0);
+ file_list_delete(list1);
+ }
}
-void start(const char *dirname1, const char *dirname2) {
- struct file_with_size *list1, *list2;
- list1 = scan_directory(dirname1);
- list2 = scan_directory(dirname2);
- destroy(list1);
- destroy(list2);
+void print_help(FILE *out) {
+ fprintf(out, "Usage: finddup [OPTION]... DIR1 [[not:]DIR2]\n");
+ fprintf(out, "Version %s (%s)\n", VERSION_NUMBER, UNAME);
+ fprintf(out, "Without DIR2, lists duplicated files found in DIR1. With DIR2, lists files common to both directories. With the not: prefix, lists files found in DIR1 which do not exist in DIR2.\n");
+ fprintf(out, "\n");
+ fprintf(out, " -h show this help\n");
+ fprintf(out, " -d ignore dot files and directories\n");
+ fprintf(out, " -0 ignore empty files\n");
+ fprintf(out, " -c do not show which files in DIR2 corresponds to those in DIR1\n");
+ fprintf(out, " -g do not show the file groups\n");
+ fprintf(out, " -p show progress\n");
+ fprintf(out, " -r show the real file paths\n");
+ fprintf(out, " -i consider files with same inode as different\n");
+ fprintf(out, "\n");
+ fprintf(out, "Report bugs and comments to <francois@fleuret.org>\n");
}
/**********************************************************************/
setlocale (LC_ALL, "");
while (1) {
- c = getopt(argc, argv, "h");
+ c = getopt(argc, argv, "hrcgd0p");
if (c == -1)
break;
switch (c) {
case 'h':
- printf("Usage: finddup [OPTION]... [FILE]...\n");
- printf("Report bugs and comments to <francois@fleuret.org>\n");
+ print_help(stdout);
exit(EXIT_SUCCESS);
break;
+ case 'd':
+ ignore_dotfiles = 1;
+ break;
+
+ case '0':
+ ignore_empty_files = 1;
+ break;
+
+ case 'r':
+ show_realpaths = 1;
+ break;
+
+ case 'i':
+ ignore_same_inode = 1;
+ break;
+
+ case 'g':
+ show_groups = 0;
+ break;
+
+ case 'p':
+ show_progress = 1;
+ break;
+
+ case 'c':
+ show_hits = 0;
+ break;
+
default:
exit(EXIT_FAILURE);
}
}
- if (optind + 2 < argc) {
- start(argv[optind + 1], argv[optind + 2]);
+ if(optind + 2 == argc) {
+ start(argv[optind], argv[optind + 1]);
+ } else if(optind + 1 == argc) {
+ ignore_same_inode = 1;
+ start(argv[optind], 0);
} else {
- fprintf(stderr, "%s [OPTIONS] <dir1> <dir2>\n", argv[0]);
+ print_help(stderr);
exit(EXIT_FAILURE);
}
projects / finddup.git / blobdiff