*/
#include "cache.h"
#include "diff.h"
-
-// What paths are we interested in?
-static int nr_paths = 0;
-static const char **paths = NULL;
-static int *pathlens = NULL;
-
-void update_tree_entry(struct tree_desc *desc)
-{
- void *buf = desc->buf;
- unsigned long size = desc->size;
- int len = strlen(buf) + 1 + 20;
-
- if (size < len)
- die("corrupt tree file");
- desc->buf = buf + len;
- desc->size = size - len;
-}
-
-const unsigned char *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
-{
- void *tree = desc->buf;
- unsigned long size = desc->size;
- int len = strlen(tree)+1;
- const unsigned char *sha1 = tree + len;
- const char *path = strchr(tree, ' ');
- unsigned int mode;
-
- if (!path || size < len + 20 || sscanf(tree, "%o", &mode) != 1)
- die("corrupt tree file");
- *pathp = path+1;
- *modep = DIFF_FILE_CANON_MODE(mode);
- return sha1;
-}
+#include "tree.h"
static char *malloc_base(const char *base, const char *path, int pathlen)
{
return newbase;
}
-static int show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc, const char *base);
+static void show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc,
+ const char *base);
static int compare_tree_entry(struct tree_desc *t1, struct tree_desc *t2, const char *base, struct diff_options *opt)
{
show_entry(opt, "+", t2, base);
return 1;
}
- if (!opt->find_copies_harder &&
- !memcmp(sha1, sha2, 20) && mode1 == mode2)
+ if (!opt->find_copies_harder && !hashcmp(sha1, sha2) && mode1 == mode2)
return 0;
/*
return 0;
}
-static int interesting(struct tree_desc *desc, const char *base)
+static int interesting(struct tree_desc *desc, const char *base, struct diff_options *opt)
{
const char *path;
unsigned mode;
int i;
int baselen, pathlen;
- if (!nr_paths)
+ if (!opt->nr_paths)
return 1;
(void)tree_entry_extract(desc, &path, &mode);
pathlen = strlen(path);
baselen = strlen(base);
- for (i=0; i < nr_paths; i++) {
- const char *match = paths[i];
- int matchlen = pathlens[i];
+ for (i=0; i < opt->nr_paths; i++) {
+ const char *match = opt->paths[i];
+ int matchlen = opt->pathlens[i];
if (baselen >= matchlen) {
/* If it doesn't match, move along... */
static void show_tree(struct diff_options *opt, const char *prefix, struct tree_desc *desc, const char *base)
{
while (desc->size) {
- if (interesting(desc, base))
+ if (interesting(desc, base, opt))
show_entry(opt, prefix, desc, base);
update_tree_entry(desc);
}
}
/* A file entry went away or appeared */
-static int show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc, const char *base)
+static void show_entry(struct diff_options *opt, const char *prefix, struct tree_desc *desc,
+ const char *base)
{
unsigned mode;
const char *path;
void *tree;
tree = read_sha1_file(sha1, type, &inner.size);
- if (!tree || strcmp(type, "tree"))
+ if (!tree || strcmp(type, tree_type))
die("corrupt tree sha %s", sha1_to_hex(sha1));
inner.buf = tree;
free(tree);
free(newbase);
- return 0;
+ } else {
+ opt->add_remove(opt, prefix[0], mode, sha1, base, path);
}
-
- opt->add_remove(opt, prefix[0], mode, sha1, base, path);
- return 0;
}
int diff_tree(struct tree_desc *t1, struct tree_desc *t2, const char *base, struct diff_options *opt)
{
while (t1->size | t2->size) {
- if (nr_paths && t1->size && !interesting(t1, base)) {
+ if (opt->nr_paths && t1->size && !interesting(t1, base, opt)) {
update_tree_entry(t1);
continue;
}
- if (nr_paths && t2->size && !interesting(t2, base)) {
+ if (opt->nr_paths && t2->size && !interesting(t2, base, opt)) {
update_tree_entry(t2);
continue;
}
struct tree_desc t1, t2;
int retval;
- tree1 = read_object_with_reference(old, "tree", &t1.size, NULL);
+ tree1 = read_object_with_reference(old, tree_type, &t1.size, NULL);
if (!tree1)
die("unable to read source tree (%s)", sha1_to_hex(old));
- tree2 = read_object_with_reference(new, "tree", &t2.size, NULL);
+ tree2 = read_object_with_reference(new, tree_type, &t2.size, NULL);
if (!tree2)
die("unable to read destination tree (%s)", sha1_to_hex(new));
t1.buf = tree1;
return retval;
}
+int diff_root_tree_sha1(const unsigned char *new, const char *base, struct diff_options *opt)
+{
+ int retval;
+ void *tree;
+ struct tree_desc empty, real;
+
+ tree = read_object_with_reference(new, tree_type, &real.size, NULL);
+ if (!tree)
+ die("unable to read root tree (%s)", sha1_to_hex(new));
+ real.buf = tree;
+
+ empty.size = 0;
+ empty.buf = "";
+ retval = diff_tree(&empty, &real, base, opt);
+ free(tree);
+ return retval;
+}
+
static int count_paths(const char **paths)
{
int i = 0;
return i;
}
-void diff_tree_setup_paths(const char **p)
+void diff_tree_release_paths(struct diff_options *opt)
{
+ free(opt->pathlens);
+}
+
+void diff_tree_setup_paths(const char **p, struct diff_options *opt)
+{
+ opt->nr_paths = 0;
+ opt->pathlens = NULL;
+ opt->paths = NULL;
+
if (p) {
int i;
- paths = p;
- nr_paths = count_paths(paths);
- if (nr_paths == 0) {
- pathlens = NULL;
+ opt->paths = p;
+ opt->nr_paths = count_paths(p);
+ if (opt->nr_paths == 0) {
+ opt->pathlens = NULL;
return;
}
- pathlens = xmalloc(nr_paths * sizeof(int));
- for (i=0; i<nr_paths; i++)
- pathlens[i] = strlen(paths[i]);
+ opt->pathlens = xmalloc(opt->nr_paths * sizeof(int));
+ for (i=0; i < opt->nr_paths; i++)
+ opt->pathlens[i] = strlen(p[i]);
}
}