X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=dus.c;h=24dcc281a9870cf6189944770aa6e087dbab46e1;hb=64f2842f0df8442b36adfd3c9d83211b0e62cd77;hp=d83f9309f0355061c52bf7d056de4aa453304efd;hpb=76bfccae753814ab4a46224fa4ded68a4966a107;p=dus.git diff --git a/dus.c b/dus.c index d83f930..24dcc28 100644 --- a/dus.c +++ b/dus.c @@ -1,9 +1,9 @@ /* - * dus is a simple utility designed to display the list of files and - * directories with disk occupancy, sorted according to it. + * dus is a simple utility to display the files and directories + * according to their total disk occupancy. * - * Copyright (c) 2009 Francois Fleuret + * Copyright (c) 2010 Francois Fleuret * Written by Francois Fleuret * * This file is part of dus. @@ -33,12 +33,51 @@ #include #include #include +#include +#include -#define BUFFER_SIZE 1024 +#define BUFFER_SIZE 4096 typedef int64_t size_sum_t; -size_sum_t file_or_dir_size(char *name) { +/* Yeah, global variables! */ + +int ignore_dotfiles = 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 fancy_size_display = 0; /* 1 means to use floating values with K, M and G + as units */ + +int reverse_sorting = 0; /* 1 means to show the large ones first */ + +/********************************************************************/ + +int ignore_entry(const char *name) { + return + strcmp(name, ".") == 0 || + strcmp(name, "..") == 0 || + (ignore_dotfiles && name[0] == '.'); +} + +void print_size_sum(size_sum_t s) { + char tmp[100]; + char *a = tmp + sizeof(tmp)/sizeof(char); + *(--a) = '\0'; + if(s) { + while(s) { + *(--a) = s%10 + '0'; + s /= 10; + } + } else { + *(--a) = '0'; + } + printf(a); +} + +size_sum_t file_or_dir_size(const char *name) { DIR *dir; struct dirent *dir_e; struct stat dummy; @@ -49,7 +88,7 @@ size_sum_t file_or_dir_size(char *name) { if(lstat(name, &dummy) != 0) { printf("Can not stat %s: %s\n", name, strerror(errno)); - exit (1); + exit(EXIT_FAILURE); } if(S_ISLNK(dummy.st_mode)) { @@ -60,8 +99,7 @@ size_sum_t file_or_dir_size(char *name) { if(dir) { while((dir_e = readdir(dir))) { - if(strcmp(dir_e->d_name, ".") && - strcmp(dir_e->d_name, "..")) { + if(!ignore_entry(dir_e->d_name)) { snprintf(subname, BUFFER_SIZE, "%s/%s", name, dir_e->d_name); result += file_or_dir_size(subname); } @@ -69,7 +107,6 @@ size_sum_t file_or_dir_size(char *name) { closedir(dir); } else { if(S_ISREG(dummy.st_mode)) { - /* printf("%d %s\n", dummy.st_size, name); */ result += dummy.st_size; } } @@ -112,16 +149,25 @@ int compare_files(const void *x1, const void *x2) { f1 = (const struct file_with_size **) x1; f2 = (const struct file_with_size **) x2; - if((*f1)->size < (*f2)->size) { - return -1; - } else if((*f1)->size > (*f2)->size) { - return 1; + if(reverse_sorting) { + if((*f1)->size < (*f2)->size) { + return 1; + } else if((*f1)->size > (*f2)->size) { + return -1; + } else { + return 0; + } } else { - return 0; + if((*f1)->size < (*f2)->size) { + return -1; + } else if((*f1)->size > (*f2)->size) { + return 1; + } else { + return 0; + } } } - void print_sorted(struct file_with_size *root, int height) { struct file_with_size *node; struct file_with_size **nodes; @@ -141,35 +187,40 @@ void print_sorted(struct file_with_size *root, int height) { qsort(nodes, nb, sizeof(struct file_with_size *), compare_files); - /* - for(n = 0; n < nb; n++) { - printf("%lld %s\n", - nodes[n]->size, - nodes[n]->filename); + first = 0; + + if(forced_height) { + height = forced_height; } - */ - first = 0; if(height > 0 && height < nb) { first = nb - height; } - 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); - } else { - printf("% 6.1fG %s\n", - ((double) (nodes[n]->size))/(1024.0 * 1024.0 * 1024.0), - nodes[n]->filename); + + 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); + } else { + printf("% 6.1fG %s\n", + ((double) (nodes[n]->size))/(1024.0 * 1024.0 * 1024.0), + nodes[n]->filename); + } + } + } else { + for(n = first; n < nb; n++) { + print_size_sum(nodes[n]->size); + printf(" %s\n", nodes[n]->filename); } } @@ -179,14 +230,62 @@ void print_sorted(struct file_with_size *root, int height) { /**********************************************************************/ int main(int argc, char **argv) { - int k; + int c; struct file_with_size *root; root = 0; - if(argc > 1) { - for(k = 1; k < argc; k++) { - root = create(argv[k], root); + setlocale (LC_ALL, ""); + + while (1) { + c = getopt(argc, argv, "dfrl:hdu"); + if (c == -1) + break; + + switch (c) { + + case 'd': + ignore_dotfiles = 1; + break; + + case 'f': + fancy_size_display = 1; + break; + + case 'r': + reverse_sorting = 1; + break; + + case 'l': + forced_height = atoi(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 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 \n"); + exit(EXIT_SUCCESS); + + break; + + default: + exit(EXIT_FAILURE); + } + } + + if (optind < argc) { + while (optind < argc) { + root = create(argv[optind++], root); } } else { DIR *dir; @@ -194,8 +293,7 @@ int main(int argc, char **argv) { dir = opendir("."); if(dir) { while((dir_e = readdir(dir))) { - if(strcmp(dir_e->d_name, ".") && - strcmp(dir_e->d_name, "..")) { + if(!ignore_entry(dir_e->d_name)) { root = create(dir_e->d_name, root); } } @@ -207,7 +305,7 @@ int main(int argc, char **argv) { struct winsize win; if(ioctl (STDOUT_FILENO, TIOCGWINSZ, (char *) &win)) { printf("Can not get the tty size: %s\n", strerror(errno)); - exit (1); + exit (EXIT_FAILURE); } print_sorted(root, win.ws_row - 2); } else { @@ -216,5 +314,5 @@ int main(int argc, char **argv) { destroy(root); - exit(0); + exit(EXIT_SUCCESS); }