show-files.c

   1 /*
   2  * This merges the file listing in the directory cache index
   3  * with the actual working directory list, and shows different
   4  * combinations of the two.
   5  *
   6  * Copyright (C) Linus Torvalds, 2005
   7  */
   8 #include <dirent.h>
   9 #include <sys/param.h>
  10
  11 #include "cache.h"
  12
  13 static int show_deleted = 0;
  14 static int show_cached = 0;
  15 static int show_others = 0;
  16 static int show_ignored = 0;
  17 static int show_stage = 0;
  18 static int line_terminator = '\n';
  19
  20 static const char **dir;
  21 static int nr_dir;
  22 static int dir_alloc;
  23
  24 static void add_name(const char *pathname, int len)
  25 {
  26         char *name;
  27
  28         if (cache_name_pos(pathname, len) >= 0)
  29                 return;
  30
  31         if (nr_dir == dir_alloc) {
  32                 dir_alloc = alloc_nr(dir_alloc);
  33                 dir = realloc(dir, dir_alloc*sizeof(char *));
  34         }
  35         name = malloc(len + 1);
  36         memcpy(name, pathname, len + 1);
  37         dir[nr_dir++] = name;
  38 }
  39
  40 /*
  41  * Read a directory tree. We currently ignore anything but
  42  * directories and regular files. That's because git doesn't
  43  * handle them at all yet. Maybe that will change some day.
  44  *
  45  * Also, we currently ignore all names starting with a dot.
  46  * That likely will not change.
  47  */
  48 static void read_directory(const char *path, const char *base, int baselen)
  49 {
  50         DIR *dir = opendir(path);
  51
  52         if (dir) {
  53                 struct dirent *de;
  54                 char fullname[MAXPATHLEN + 1];
  55                 memcpy(fullname, base, baselen);
  56
  57                 while ((de = readdir(dir)) != NULL) {
  58                         int len;
  59
  60                         if (de->d_name[0] == '.')
  61                                 continue;
  62                         len = strlen(de->d_name);
  63                         memcpy(fullname + baselen, de->d_name, len+1);
  64
  65                         switch (de->d_type) {
  66                         struct stat st;
  67                         default:
  68                                 continue;
  69                         case DT_UNKNOWN:
  70                                 if (lstat(fullname, &st))
  71                                         continue;
  72                                 if (S_ISREG(st.st_mode))
  73                                         break;
  74                                 if (!S_ISDIR(st.st_mode))
  75                                         continue;
  76                                 /* fallthrough */
  77                         case DT_DIR:
  78                                 memcpy(fullname + baselen + len, "/", 2);
  79                                 read_directory(fullname, fullname, baselen + len + 1);
  80                                 continue;
  81                         case DT_REG:
  82                                 break;
  83                         }
  84                         add_name(fullname, baselen + len);
  85                 }
  86                 closedir(dir);
  87         }
  88 }
  89
  90 static int cmp_name(const void *p1, const void *p2)
  91 {
  92         const char *n1 = *(const char **)p1;
  93         const char *n2 = *(const char **)p2;
  94         int l1 = strlen(n1), l2 = strlen(n2);
  95
  96         return cache_name_compare(n1, l1, n2, l2);
  97 }
  98
  99 static void show_files(void)
 100 {
 101         int i;
 102
 103         /* For cached/deleted files we don't need to even do the readdir */
 104         if (show_others | show_ignored) {
 105                 read_directory(".", "", 0);
 106                 qsort(dir, nr_dir, sizeof(char *), cmp_name);
 107         }
 108         if (show_others) {
 109                 for (i = 0; i < nr_dir; i++)
 110                         printf("%s%c", dir[i], line_terminator);
 111         }
 112         if (show_cached | show_stage) {
 113                 for (i = 0; i < active_nr; i++) {
 114                         struct cache_entry *ce = active_cache[i];
 115                         if (!show_stage)
 116                                 printf("%s%c", ce->name, line_terminator);
 117                         else
 118                                 printf(/* "%06o %s %d %10d %s%c", */
 119                                        "%06o %s %d %s%c",
 120                                        ntohl(ce->ce_mode),
 121                                        sha1_to_hex(ce->sha1),
 122                                        ce_stage(ce),
 123                                        /* ntohl(ce->ce_size), */
 124                                        ce->name, line_terminator);
 125                 }
 126         }
 127         if (show_deleted) {
 128                 for (i = 0; i < active_nr; i++) {
 129                         struct cache_entry *ce = active_cache[i];
 130                         struct stat st;
 131                         if (!stat(ce->name, &st))
 132                                 continue;
 133                         printf("%s%c", ce->name, line_terminator);
 134                 }
 135         }
 136         if (show_ignored) {
 137                 /* We don't have any "ignore" list yet */
 138         }
 139 }
 140
 141 int main(int argc, char **argv)
 142 {
 143         int i;
 144
 145         for (i = 1; i < argc; i++) {
 146                 char *arg = argv[i];
 147
 148                 if (!strcmp(arg, "-z")) {
 149                         line_terminator = 0;
 150                         continue;
 151                 }
 152
 153                 if (!strcmp(arg, "--cached")) {
 154                         show_cached = 1;
 155                         continue;
 156                 }
 157                 if (!strcmp(arg, "--deleted")) {
 158                         show_deleted = 1;
 159                         continue;
 160                 }
 161                 if (!strcmp(arg, "--others")) {
 162                         show_others = 1;
 163                         continue;
 164                 }
 165                 if (!strcmp(arg, "--ignored")) {
 166                         show_ignored = 1;
 167                         continue;
 168                 }
 169                 if (!strcmp(arg, "--stage")) {
 170                         show_stage = 1;
 171                         continue;
 172                 }
 173
 174                 usage("show-files [-z] (--[cached|deleted|others|ignored|stage])*");
 175         }
 176
 177         /* With no flags, we default to showing the cached files */
 178         if (!(show_stage | show_deleted | show_others | show_ignored))
 179                 show_cached = 1;
 180
 181         read_cache();
 182         show_files();
 183         return 0;
 184 }