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 show_unmerged = 0;
  19 static int line_terminator = '\n';
  20
  21 static const char **dir;
  22 static int nr_dir;
  23 static int dir_alloc;
  24
  25 static void add_name(const char *pathname, int len)
  26 {
  27         char *name;
  28
  29         if (cache_name_pos(pathname, len) >= 0)
  30                 return;
  31
  32         if (nr_dir == dir_alloc) {
  33                 dir_alloc = alloc_nr(dir_alloc);
  34                 dir = realloc(dir, dir_alloc*sizeof(char *));
  35         }
  36         name = malloc(len + 1);
  37         memcpy(name, pathname, len + 1);
  38         dir[nr_dir++] = name;
  39 }
  40
  41 /*
  42  * Read a directory tree. We currently ignore anything but
  43  * directories and regular files. That's because git doesn't
  44  * handle them at all yet. Maybe that will change some day.
  45  *
  46  * Also, we currently ignore all names starting with a dot.
  47  * That likely will not change.
  48  */
  49 static void read_directory(const char *path, const char *base, int baselen)
  50 {
  51         DIR *dir = opendir(path);
  52
  53         if (dir) {
  54                 struct dirent *de;
  55                 char fullname[MAXPATHLEN + 1];
  56                 memcpy(fullname, base, baselen);
  57
  58                 while ((de = readdir(dir)) != NULL) {
  59                         int len;
  60
  61                         if (de->d_name[0] == '.')
  62                                 continue;
  63                         len = strlen(de->d_name);
  64                         memcpy(fullname + baselen, de->d_name, len+1);
  65
  66                         switch (de->d_type) {
  67                         struct stat st;
  68                         default:
  69                                 continue;
  70                         case DT_UNKNOWN:
  71                                 if (lstat(fullname, &st))
  72                                         continue;
  73                                 if (S_ISREG(st.st_mode))
  74                                         break;
  75                                 if (!S_ISDIR(st.st_mode))
  76                                         continue;
  77                                 /* fallthrough */
  78                         case DT_DIR:
  79                                 memcpy(fullname + baselen + len, "/", 2);
  80                                 read_directory(fullname, fullname, baselen + len + 1);
  81                                 continue;
  82                         case DT_REG:
  83                                 break;
  84                         }
  85                         add_name(fullname, baselen + len);
  86                 }
  87                 closedir(dir);
  88         }
  89 }
  90
  91 static int cmp_name(const void *p1, const void *p2)
  92 {
  93         const char *n1 = *(const char **)p1;
  94         const char *n2 = *(const char **)p2;
  95         int l1 = strlen(n1), l2 = strlen(n2);
  96
  97         return cache_name_compare(n1, l1, n2, l2);
  98 }
  99
 100 static void show_files(void)
 101 {
 102         int i;
 103
 104         /* For cached/deleted files we don't need to even do the readdir */
 105         if (show_others | show_ignored) {
 106                 read_directory(".", "", 0);
 107                 qsort(dir, nr_dir, sizeof(char *), cmp_name);
 108         }
 109         if (show_others) {
 110                 for (i = 0; i < nr_dir; i++)
 111                         printf("%s%c", dir[i], line_terminator);
 112         }
 113         if (show_cached | show_stage) {
 114                 for (i = 0; i < active_nr; i++) {
 115                         struct cache_entry *ce = active_cache[i];
 116                         if (show_unmerged && !ce_stage(ce))
 117                                 continue;
 118                         if (!show_stage)
 119                                 printf("%s%c", ce->name, line_terminator);
 120                         else
 121                                 printf(/* "%06o %s %d %10d %s%c", */
 122                                        "%06o %s %d %s%c",
 123                                        ntohl(ce->ce_mode),
 124                                        sha1_to_hex(ce->sha1),
 125                                        ce_stage(ce),
 126                                        /* ntohl(ce->ce_size), */
 127                                        ce->name, line_terminator);
 128                 }
 129         }
 130         if (show_deleted) {
 131                 for (i = 0; i < active_nr; i++) {
 132                         struct cache_entry *ce = active_cache[i];
 133                         struct stat st;
 134                         if (!stat(ce->name, &st))
 135                                 continue;
 136                         printf("%s%c", ce->name, line_terminator);
 137                 }
 138         }
 139         if (show_ignored) {
 140                 /* We don't have any "ignore" list yet */
 141         }
 142 }
 143
 144 int main(int argc, char **argv)
 145 {
 146         int i;
 147
 148         for (i = 1; i < argc; i++) {
 149                 char *arg = argv[i];
 150
 151                 if (!strcmp(arg, "-z")) {
 152                         line_terminator = 0;
 153                         continue;
 154                 }
 155
 156                 if (!strcmp(arg, "--cached")) {
 157                         show_cached = 1;
 158                         continue;
 159                 }
 160                 if (!strcmp(arg, "--deleted")) {
 161                         show_deleted = 1;
 162                         continue;
 163                 }
 164                 if (!strcmp(arg, "--others")) {
 165                         show_others = 1;
 166                         continue;
 167                 }
 168                 if (!strcmp(arg, "--ignored")) {
 169                         show_ignored = 1;
 170                         continue;
 171                 }
 172                 if (!strcmp(arg, "--stage")) {
 173                         show_stage = 1;
 174                         continue;
 175                 }
 176                 if (!strcmp(arg, "--unmerged")) {
 177                         // There's no point in showing unmerged unless you also show the stage information
 178                         show_stage = 1;
 179                         show_unmerged = 1;
 180                         continue;
 181                 }
 182
 183                 usage("show-files [-z] (--[cached|deleted|others|ignored|stage])*");
 184         }
 185
 186         /* With no flags, we default to showing the cached files */
 187         if (!(show_stage | show_deleted | show_others | show_ignored | show_unmerged))
 188                 show_cached = 1;
 189
 190         read_cache();
 191         show_files();
 192         return 0;
 193 }