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-rw-r--r--show-files.c164
1 files changed, 164 insertions, 0 deletions
diff --git a/show-files.c b/show-files.c
new file mode 100644
index 0000000..9c396ec
--- /dev/null
+++ b/show-files.c
@@ -0,0 +1,164 @@
+/*
+ * This merges the file listing in the directory cache index
+ * with the actual working directory list, and shows different
+ * combinations of the two.
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include <dirent.h>
+#include <sys/param.h>
+
+#include "cache.h"
+
+static int show_deleted = 0;
+static int show_cached = 0;
+static int show_others = 0;
+static int show_ignored = 0;
+
+static const char **dir;
+static int nr_dir;
+static int dir_alloc;
+
+static void add_name(const char *pathname, int len)
+{
+ char *name;
+
+ if (cache_name_pos(pathname, len) >= 0)
+ return;
+
+ if (nr_dir == dir_alloc) {
+ dir_alloc = alloc_nr(dir_alloc);
+ dir = realloc(dir, dir_alloc*sizeof(char *));
+ }
+ name = malloc(len + 1);
+ memcpy(name, pathname, len + 1);
+ dir[nr_dir++] = name;
+}
+
+/*
+ * Read a directory tree. We currently ignore anything but
+ * directories and regular files. That's because git doesn't
+ * handle them at all yet. Maybe that will change some day.
+ *
+ * Also, we currently ignore all names starting with a dot.
+ * That likely will not change.
+ */
+static void read_directory(const char *path, const char *base, int baselen)
+{
+ DIR *dir = opendir(path);
+
+ if (dir) {
+ struct dirent *de;
+ char fullname[MAXPATHLEN + 1];
+ memcpy(fullname, base, baselen);
+
+ while ((de = readdir(dir)) != NULL) {
+ int len;
+
+ if (de->d_name[0] == '.')
+ continue;
+ len = strlen(de->d_name);
+ memcpy(fullname + baselen, de->d_name, len+1);
+
+ switch (de->d_type) {
+ struct stat st;
+ default:
+ continue;
+ case DT_UNKNOWN:
+ if (lstat(fullname, &st))
+ continue;
+ if (S_ISREG(st.st_mode))
+ break;
+ if (!S_ISDIR(st.st_mode))
+ continue;
+ /* fallthrough */
+ case DT_DIR:
+ memcpy(fullname + baselen + len, "/", 2);
+ read_directory(fullname, fullname, baselen + len + 1);
+ continue;
+ case DT_REG:
+ break;
+ }
+ add_name(fullname, baselen + len);
+ }
+ closedir(dir);
+ }
+}
+
+static int cmp_name(const void *p1, const void *p2)
+{
+ const char *n1 = *(const char **)p1;
+ const char *n2 = *(const char **)p2;
+ int l1 = strlen(n1), l2 = strlen(n2);
+
+ return cache_name_compare(n1, l1, n2, l2);
+}
+
+static void show_files(void)
+{
+ int i;
+
+ /* For cached/deleted files we don't need to even do the readdir */
+ if (show_others | show_ignored) {
+ read_directory(".", "", 0);
+ qsort(dir, nr_dir, sizeof(char *), cmp_name);
+ }
+ if (show_others) {
+ for (i = 0; i < nr_dir; i++)
+ printf("%s\n", dir[i]);
+ }
+ if (show_cached) {
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ printf("%s\n", ce->name);
+ }
+ }
+ if (show_deleted) {
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ struct stat st;
+ if (!stat(ce->name, &st))
+ continue;
+ printf("%s\n", ce->name);
+ }
+ }
+ if (show_ignored) {
+ /* We don't have any "ignore" list yet */
+ }
+}
+
+int main(int argc, char **argv)
+{
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ char *arg = argv[i];
+
+ if (!strcmp(arg, "--cached")) {
+ show_cached = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--deleted")) {
+ show_deleted = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--others")) {
+ show_others = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--ignored")) {
+ show_ignored = 1;
+ continue;
+ }
+
+ usage("show-files (--[cached|deleted|others|ignoded])*");
+ }
+
+ /* With no flags, we default to showing the cached files */
+ if (!(show_cached | show_deleted | show_others | show_ignored))
+ show_cached = 1;
+
+ read_cache();
+ show_files();
+ return 0;
+}