summaryrefslogtreecommitdiff
path: root/show-diff.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-07 22:13:13 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-07 22:13:13 (GMT)
commite83c5163316f89bfbde7d9ab23ca2e25604af290 (patch)
tree2b5bfdf7798569e0b59b16eb9602d5fa572d6038 /show-diff.c
downloadgit-e83c5163316f89bfbde7d9ab23ca2e25604af290.zip
git-e83c5163316f89bfbde7d9ab23ca2e25604af290.tar.gz
git-e83c5163316f89bfbde7d9ab23ca2e25604af290.tar.bz2
Initial revision of "git", the information manager from hell
Diffstat (limited to 'show-diff.c')
-rw-r--r--show-diff.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/show-diff.c b/show-diff.c
new file mode 100644
index 0000000..b852288
--- /dev/null
+++ b/show-diff.c
@@ -0,0 +1,81 @@
+#include "cache.h"
+
+#define MTIME_CHANGED 0x0001
+#define CTIME_CHANGED 0x0002
+#define OWNER_CHANGED 0x0004
+#define MODE_CHANGED 0x0008
+#define INODE_CHANGED 0x0010
+#define DATA_CHANGED 0x0020
+
+static int match_stat(struct cache_entry *ce, struct stat *st)
+{
+ unsigned int changed = 0;
+
+ if (ce->mtime.sec != (unsigned int)st->st_mtim.tv_sec ||
+ ce->mtime.nsec != (unsigned int)st->st_mtim.tv_nsec)
+ changed |= MTIME_CHANGED;
+ if (ce->ctime.sec != (unsigned int)st->st_ctim.tv_sec ||
+ ce->ctime.nsec != (unsigned int)st->st_ctim.tv_nsec)
+ changed |= CTIME_CHANGED;
+ if (ce->st_uid != (unsigned int)st->st_uid ||
+ ce->st_gid != (unsigned int)st->st_gid)
+ changed |= OWNER_CHANGED;
+ if (ce->st_mode != (unsigned int)st->st_mode)
+ changed |= MODE_CHANGED;
+ if (ce->st_dev != (unsigned int)st->st_dev ||
+ ce->st_ino != (unsigned int)st->st_ino)
+ changed |= INODE_CHANGED;
+ if (ce->st_size != (unsigned int)st->st_size)
+ changed |= DATA_CHANGED;
+ return changed;
+}
+
+static void show_differences(struct cache_entry *ce, struct stat *cur,
+ void *old_contents, unsigned long long old_size)
+{
+ static char cmd[1000];
+ FILE *f;
+
+ snprintf(cmd, sizeof(cmd), "diff -u - %s", ce->name);
+ f = popen(cmd, "w");
+ fwrite(old_contents, old_size, 1, f);
+ pclose(f);
+}
+
+int main(int argc, char **argv)
+{
+ int entries = read_cache();
+ int i;
+
+ if (entries < 0) {
+ perror("read_cache");
+ exit(1);
+ }
+ for (i = 0; i < entries; i++) {
+ struct stat st;
+ struct cache_entry *ce = active_cache[i];
+ int n, changed;
+ unsigned int mode;
+ unsigned long size;
+ char type[20];
+ void *new;
+
+ if (stat(ce->name, &st) < 0) {
+ printf("%s: %s\n", ce->name, strerror(errno));
+ continue;
+ }
+ changed = match_stat(ce, &st);
+ if (!changed) {
+ printf("%s: ok\n", ce->name);
+ continue;
+ }
+ printf("%.*s: ", ce->namelen, ce->name);
+ for (n = 0; n < 20; n++)
+ printf("%02x", ce->sha1[n]);
+ printf("\n");
+ new = read_sha1_file(ce->sha1, type, &size);
+ show_differences(ce, &st, new, size);
+ free(new);
+ }
+ return 0;
+}