*
*/
+#define VERSION_NUMBER "1.1"
+
#define _BSD_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/param.h>
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h>
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 forced_height = 0; /* -1 means no height limit, strictly positive
means limit, 0 means not active */
int reverse_sorting = 0; /* 1 means to show the large ones first */
+int show_top = 0; /* 1 means to show the top of the sorted list
+ instead of the bottom */
+
+size_sum_t size_min = -1; /* -1 means no minimum size, otherwise lower
+ bound on the size to display a
+ file/dir */
+
+/********************************************************************/
+
+/* malloc with error checking. */
+
+void *safe_malloc(size_t n) {
+ void *p = malloc(n);
+ if (!p && n != 0) {
+ fprintf(stderr, "Can not allocate memory: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ return p;
+}
+
/********************************************************************/
int ignore_entry(const char *name) {
} else {
*(--a) = '0';
}
- printf(a);
+ printf("%s", a);
}
size_sum_t file_or_dir_size(const char *name) {
struct dirent *dir_e;
struct stat dummy;
size_sum_t result;
- char subname[BUFFER_SIZE];
+ char subname[PATH_MAX];
result = 0;
if(lstat(name, &dummy) != 0) {
- printf("Can not stat %s: %s\n", name, strerror(errno));
+ fprintf(stderr, "Can not stat %s: %s\n", name, strerror(errno));
exit(EXIT_FAILURE);
}
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);
+ snprintf(subname, PATH_MAX, "%s/%s", name, dir_e->d_name);
result += file_or_dir_size(subname);
}
}
return result;
}
+size_sum_t atoss(const char *string) {
+ size_sum_t total, partial_total;
+ const char *c;
+ total = 0;
+ partial_total = 0;
+
+ for(c = string; *c; c++) {
+ if(*c >= '0' && *c <= '9') {
+ partial_total = 10 * partial_total + ((int) (*c - '0'));
+ } else if(*c == 'K' || *c == 'k') {
+ total += partial_total * 1024;
+ partial_total = 0;
+ } else if(*c == 'M' || *c == 'm') {
+ total += partial_total * 1024 * 1024;
+ partial_total = 0;
+ } else if(*c == 'G' || *c == 'g') {
+ total += partial_total * 1024 * 1024 * 1024;
+ partial_total = 0;
+ } else {
+ fprintf(stderr, "Syntax error in %s\n", string);
+ }
+ }
+ return total;
+}
+
/**********************************************************************/
struct file_with_size {
struct file_with_size *create(char *name, struct file_with_size *current) {
struct file_with_size *result;
- result = malloc(sizeof(struct file_with_size));
+ result = safe_malloc(sizeof(struct file_with_size));
result->filename = strdup(name);
result->size = file_or_dir_size(name);
result->next = current;
}
}
-void print_sorted(struct file_with_size *root, int height) {
+void raw_print(char *buffer, char *filename, size_sum_t size) {
+ char *a, *b, *c, u;
+
+ b = buffer;
+ if(size) {
+ while(size) {
+ *(b++) = size%10 + '0';
+ size /= 10;
+ }
+ } else {
+ *(b++) = '0';
+ }
+
+ a = buffer;
+ c = b;
+ while(a < c) {
+ u = *a;
+ *(a++) = *(--c);
+ *c = u;
+ }
+
+ *(b++) = ' ';
+
+ sprintf(b, " %s\n", filename);
+}
+
+void fancy_print(char *buffer, char *filename, size_sum_t size) {
+ if(size < 1024) {
+ sprintf(buffer,
+ "% 7d -- %s\n",
+ ((int) size),
+ filename);
+ } else if(size < 1024 * 1024) {
+ sprintf(buffer,
+ "% 6.1fK -- %s\n",
+ ((double) (size))/(1024.0),
+ filename);
+ } else if(size < 1024 * 1024 * 1024) {
+ sprintf(buffer,
+ "% 6.1fM -- %s\n",
+ ((double) (size))/(1024.0 * 1024),
+ filename);
+ } else {
+ sprintf(buffer,
+ "% 6.1fG -- %s\n",
+ ((double) (size))/(1024.0 * 1024.0 * 1024.0),
+ filename);
+ }
+}
+
+void print_sorted(struct file_with_size *root, int width, int height) {
+ char line[BUFFER_SIZE];
struct file_with_size *node;
struct file_with_size **nodes;
- int nb, n, first;
+ int nb_nodes, n, first, last;
- nb = 0;
+ nb_nodes = 0;
for(node = root; node; node = node->next) {
- nb++;
+ nb_nodes++;
}
- nodes = malloc(nb * sizeof(struct file_with_size *));
+ nodes = safe_malloc(nb_nodes * sizeof(struct file_with_size *));
n = 0;
for(node = root; node; node = node->next) {
nodes[n++] = node;
}
- qsort(nodes, nb, sizeof(struct file_with_size *), compare_files);
+ qsort(nodes, nb_nodes, sizeof(struct file_with_size *), compare_files);
first = 0;
+ last = nb_nodes;
if(forced_height) {
height = forced_height;
}
- if(height > 0 && height < nb) {
- first = nb - height;
+ if(height >= 0 && nb_nodes > height && !show_top && !forced_height) {
+ printf("...\n");
+ }
+
+ if(height > 0 && height < nb_nodes) {
+ first = nb_nodes - height;
+ }
+
+ if(show_top) {
+ n = last;
+ last = nb_nodes - first;
+ first = nb_nodes - n;
}
- if(fancy_size_display) {
- for(n = first; n < nb; n++) {
- if(nodes[n]->size < 1024) {
- printf("% 7d %s\n",
- ((int) nodes[n]->size),
- nodes[n]->filename);
- } else if(nodes[n]->size < 1024 * 1024) {
- printf("% 6.1fK %s\n",
- ((double) (nodes[n]->size))/(1024.0),
- nodes[n]->filename);
- } else if(nodes[n]->size < 1024 * 1024 * 1024) {
- printf("% 6.1fM %s\n",
- ((double) (nodes[n]->size))/(1024.0 * 1024),
- nodes[n]->filename);
+ for(n = first; n < last; n++) {
+ if(size_min < 0 || nodes[n]->size >= size_min) {
+ if(fancy_size_display) {
+ fancy_print(line, nodes[n]->filename, nodes[n]->size);
} else {
- printf("% 6.1fG %s\n",
- ((double) (nodes[n]->size))/(1024.0 * 1024.0 * 1024.0),
- nodes[n]->filename);
+ raw_print(line, nodes[n]->filename, nodes[n]->size);
}
- }
- } else {
- for(n = first; n < nb; n++) {
- print_size_sum(nodes[n]->size);
- printf(" %s\n", nodes[n]->filename);
+ if(width >= 0 && width < BUFFER_SIZE) {
+ line[width] = '\0';
+ }
+ printf(line);
}
}
+ if(height >= 0 && nb_nodes > height && show_top && !forced_height) {
+ printf("...\n");
+ }
+
free(nodes);
}
/**********************************************************************/
+void print_help(FILE *out) {
+ fprintf(out, "Usage: dus [OPTION]... [FILE]...\n");
+ fprintf(out, "Version %s (%s)\n", VERSION_NUMBER, UNAME);
+ fprintf(out, "List files and directories sorted according to their size or content size. Take the content of the current directory as argument if none is provided.\n");
+ fprintf(out, "\n");
+ fprintf(out, " -d, --ignore-dots\n");
+ fprintf(out, " ignore files and directories starting with a '.'\n");
+ fprintf(out, " -f, --fancy\n");
+ fprintf(out, " display size with float values and K, M and G units.\n");
+ fprintf(out, " -r, --reverse-order\n");
+ fprintf(out, " reverse the sorting order.\n");
+ fprintf(out, " -t, --show-top\n");
+ fprintf(out, " show the top of the list.\n");
+ fprintf(out, " -c <cols>, --nb-columns <cols>\n");
+ fprintf(out, " specificy the number of columns to display. The value -1\n");
+ fprintf(out, " corresponds to no constraint. By default the command\n");
+ fprintf(out, " uses the tty width, or no constraint if the stdout is\n");
+ fprintf(out, " not a tty.\n");
+ fprintf(out, " -l <lines>, --nb-lines <lines>\n");
+ fprintf(out, " same as -c for number of lines.\n");
+ fprintf(out, " -h, --help\n");
+ fprintf(out, " show this help.\n");
+ fprintf(out, " -m <size>, --size-min <size>\n");
+ fprintf(out, " set the listed entries minimum size.\n");
+ fprintf(out, "\n");
+ fprintf(out, "Report bugs and comments to <francois@fleuret.org>\n");
+}
+
+/**********************************************************************/
+
int main(int argc, char **argv) {
- char c;
+ int c;
struct file_with_size *root;
+ struct winsize win;
root = 0;
setlocale (LC_ALL, "");
while (1) {
- c = getopt(argc, argv, "dfrl:hdu");
+ int option_index = 0;
+ static struct option long_options[] = {
+ { "ignore-dots", no_argument, 0, 'd' },
+ { "reverse-order", no_argument, 0, 'r' },
+ { "show-top", no_argument, 0, 't' },
+ { "help", no_argument, 0, 'h' },
+ { "fancy", no_argument, 0, 'f' },
+ { "nb-columns", 1, 0, 'c' },
+ { "nb-lines", 1, 0, 'l' },
+ { "size-min", 1, 0, 'm' },
+ { 0, 0, 0, 0 }
+ };
+
+ c = getopt_long(argc, argv, "dfrtl:c:m:hd",
+ long_options, &option_index);
if (c == -1)
break;
reverse_sorting = 1;
break;
+ case 't':
+ show_top = 1;
+ break;
+
case 'l':
forced_height = atoi(optarg);
break;
+ case 'c':
+ forced_width = atoi(optarg);
+ break;
+
+ case 'm':
+ size_min = atoss(optarg);
+ break;
+
case 'h':
- printf("Usage: dus [OPTION]... [FILE]...\n");
- printf("List files and directories sorted according to their size or content size (the content of the current directory by default).\n");
- printf("\n");
- printf(" -d ignore files and directories starting with a '.'\n");
- printf(" -f display size with float values and K, M and G units.\n");
- printf(" -r reverse the sorting order.\n");
- printf(" -l <lines> specificy the number of lines to display. The value -1\n");
- printf(" corresponds to all the lines. By default the command\n");
- printf(" shows one line less than the height the tty, or all the\n");
- printf(" lines if the standard output is not a tty.\n");
- printf(" -h show this help.\n");
- printf("\n");
- printf("Report bugs and comments to <francois@fleuret.org>\n");
+ print_help(stdout);
exit(EXIT_SUCCESS);
break;
default:
+ print_help(stderr);
exit(EXIT_FAILURE);
}
}
}
}
closedir(dir);
+ } else {
+ fprintf(stderr, "Can not open ./: %s\n", strerror(errno));
+ exit (EXIT_FAILURE);
}
}
- if(isatty(STDOUT_FILENO)) {
- struct winsize win;
- if(ioctl (STDOUT_FILENO, TIOCGWINSZ, (char *) &win)) {
- printf("Can not get the tty size: %s\n", strerror(errno));
- exit (EXIT_FAILURE);
- }
- print_sorted(root, win.ws_row - 2);
+ if(isatty(STDOUT_FILENO) &&
+ !ioctl (STDOUT_FILENO, TIOCGWINSZ, (char *) &win)) {
+ print_sorted(root, win.ws_col, win.ws_row - 2);
} else {
- print_sorted(root, -1);
+ print_sorted(root, -1, -1);
}
destroy(root);
projects / dus.git / blobdiff