#include "cache.h"
#include "diff.h"
+static int silent = 0;
+static int show_root_diff = 0;
+static int verbose_header = 0;
static int ignore_merges = 1;
static int recursive = 0;
static int read_stdin = 0;
-static int line_termination = '\n';
-static int generate_patch = 0;
+static int diff_output_format = DIFF_FORMAT_HUMAN;
+static int detect_rename = 0;
+static int reverse_diff = 0;
+static int diff_score_opt = 0;
+static const char *pickaxe = NULL;
+static const char *header = NULL;
+static const char *header_prefix = "";
// What paths are we interested in?
static int nr_paths = 0;
-static char **paths = NULL;
+static const char **paths = NULL;
static int *pathlens = NULL;
static int diff_tree_sha1(const unsigned char *old, const unsigned char *new, const char *base);
}
static void show_file(const char *prefix, void *tree, unsigned long size, const char *base);
-
-/* A whole sub-tree went away or appeared */
-static void show_tree(const char *prefix, void *tree, unsigned long size, const char *base)
-{
- while (size) {
- show_file(prefix, tree, size, base);
- update_tree_entry(&tree, &size);
- }
-}
+static void show_tree(const char *prefix, void *tree, unsigned long size, const char *base);
/* A file entry went away or appeared */
static void show_file(const char *prefix, void *tree, unsigned long size, const char *base)
const char *path;
const unsigned char *sha1 = extract(tree, size, &path, &mode);
+ if (silent)
+ return;
+
if (recursive && S_ISDIR(mode)) {
char type[20];
unsigned long size;
die("corrupt tree sha %s", sha1_to_hex(sha1));
show_tree(prefix, tree, size, newbase);
-
+
free(tree);
free(newbase);
return;
}
- if (generate_patch) {
- if (!S_ISDIR(mode))
- diff_addremove(prefix[0], mode, sha1, base, path);
- }
- else
- printf("%s%06o\t%s\t%s\t%s%s%c", prefix, mode,
- S_ISDIR(mode) ? "tree" : "blob",
- sha1_to_hex(sha1), base, path,
- line_termination);
+ diff_addremove(prefix[0], mode, sha1, base, path);
}
static int compare_tree_entry(void *tree1, unsigned long size1, void *tree2, unsigned long size2, const char *base)
const char *path1, *path2;
const unsigned char *sha1, *sha2;
int cmp, pathlen1, pathlen2;
- char old_sha1_hex[50];
sha1 = extract(tree1, size1, &path1, &mode1);
sha2 = extract(tree2, size2, &path2, &mode2);
pathlen1 = strlen(path1);
pathlen2 = strlen(path2);
- cmp = cache_name_compare(path1, pathlen1, path2, pathlen2);
+ cmp = base_name_compare(path1, pathlen1, mode1, path2, pathlen2, mode2);
if (cmp < 0) {
show_file("-", tree1, size1, base);
return -1;
return retval;
}
- if (generate_patch) {
- if (!S_ISDIR(mode1))
- diff_change(mode1, mode2, sha1, sha2, base, path1);
- }
- else {
- strcpy(old_sha1_hex, sha1_to_hex(sha1));
- printf("*%06o->%06o\t%s\t%s->%s\t%s%s%c", mode1, mode2,
- S_ISDIR(mode1) ? "tree" : "blob",
- old_sha1_hex, sha1_to_hex(sha2), base, path1,
- line_termination);
- }
+ if (silent)
+ return 0;
+
+ diff_change(mode1, mode2, sha1, sha2, base, path1);
return 0;
}
if (pathlen > matchlen)
continue;
+ if (matchlen > pathlen) {
+ if (match[pathlen] != '/')
+ continue;
+ if (!S_ISDIR(mode))
+ continue;
+ }
+
if (strncmp(path, match, pathlen))
continue;
return 0; /* No matches */
}
+/* A whole sub-tree went away or appeared */
+static void show_tree(const char *prefix, void *tree, unsigned long size, const char *base)
+{
+ while (size) {
+ if (interesting(tree, size, base))
+ show_file(prefix, tree, size, base);
+ update_tree_entry(&tree, &size);
+ }
+}
+
static int diff_tree(void *tree1, unsigned long size1, void *tree2, unsigned long size2, const char *base)
{
while (size1 | size2) {
update_tree_entry(&tree2, &size2);
continue;
}
- die("diff-tree: internal error");
+ die("git-diff-tree: internal error");
}
return 0;
}
unsigned long size1, size2;
int retval;
- tree1 = read_object_with_reference(old, "tree", &size1, 0);
+ tree1 = read_object_with_reference(old, "tree", &size1, NULL);
if (!tree1)
die("unable to read source tree (%s)", sha1_to_hex(old));
- tree2 = read_object_with_reference(new, "tree", &size2, 0);
+ tree2 = read_object_with_reference(new, "tree", &size2, NULL);
if (!tree2)
die("unable to read destination tree (%s)", sha1_to_hex(new));
retval = diff_tree(tree1, size1, tree2, size2, base);
return retval;
}
-static int diff_tree_stdin(char *line)
+static void call_diff_setup(void)
{
- int len = strlen(line);
- unsigned char commit[20], parent[20];
- unsigned long size, offset;
- char *buf;
+ diff_setup(reverse_diff);
+}
- if (!len || line[len-1] != '\n')
- return -1;
- line[len-1] = 0;
- if (get_sha1_hex(line, commit))
- return -1;
- if (isspace(line[40]) && !get_sha1_hex(line+41, parent)) {
- line[40] = ' ';
- line[81] = 0;
- printf("%s:\n", line);
- return diff_tree_sha1(parent, commit, "");
+static int call_diff_flush()
+{
+ if (detect_rename)
+ diffcore_rename(detect_rename, diff_score_opt);
+ diffcore_prune();
+ if (pickaxe) {
+ diffcore_pickaxe(pickaxe);
+ if (diff_queue_is_empty()) {
+ diff_flush(DIFF_FORMAT_NO_OUTPUT);
+ return 0;
+ }
+ }
+ if (nr_paths)
+ diffcore_pathspec(paths);
+ if (header) {
+ printf("%s", header);
+ header = NULL;
}
- buf = read_object_with_reference(commit, "commit", &size, NULL);
+ diff_flush(diff_output_format);
+ return 1;
+}
+
+static int diff_tree_sha1_top(const unsigned char *old,
+ const unsigned char *new, const char *base)
+{
+ int ret;
+
+ call_diff_setup();
+ ret = diff_tree_sha1(old, new, base);
+ call_diff_flush();
+ return ret;
+}
+
+static int diff_root_tree(const unsigned char *new, const char *base)
+{
+ int retval;
+ void *tree;
+ unsigned long size;
+
+ call_diff_setup();
+ tree = read_object_with_reference(new, "tree", &size, NULL);
+ if (!tree)
+ die("unable to read root tree (%s)", sha1_to_hex(new));
+ retval = diff_tree("", 0, tree, size, base);
+ free(tree);
+ call_diff_flush();
+ return retval;
+}
+
+static int get_one_line(const char *msg, unsigned long len)
+{
+ int ret = 0;
+
+ while (len--) {
+ ret++;
+ if (*msg++ == '\n')
+ break;
+ }
+ return ret;
+}
+
+static int add_author_info(char *buf, const char *line, int len)
+{
+ char *date;
+ unsigned int namelen;
+ unsigned long time;
+ int tz;
+
+ line += strlen("author ");
+ date = strchr(line, '>');
+ if (!date)
+ return 0;
+ namelen = ++date - line;
+ time = strtoul(date, &date, 10);
+ tz = strtol(date, NULL, 10);
+
+ return sprintf(buf, "Author: %.*s\nDate: %s\n",
+ namelen, line,
+ show_date(time, tz));
+}
+
+static char *generate_header(const char *commit, const char *parent, const char *msg, unsigned long len)
+{
+ static char this_header[16384];
+ int offset;
+
+ offset = sprintf(this_header, "%s%s (from %s)\n", header_prefix, commit, parent);
+ if (verbose_header) {
+ int hdr = 1;
+
+ for (;;) {
+ const char *line = msg;
+ int linelen = get_one_line(msg, len);
+
+ if (!linelen)
+ break;
+
+ /*
+ * We want some slop for indentation and a possible
+ * final "...". Thus the "+ 20".
+ */
+ if (offset + linelen + 20 > sizeof(this_header)) {
+ memcpy(this_header + offset, " ...\n", 8);
+ offset += 8;
+ break;
+ }
+
+ msg += linelen;
+ len -= linelen;
+ if (linelen == 1)
+ hdr = 0;
+ if (hdr) {
+ if (!memcmp(line, "author ", 7))
+ offset += add_author_info(this_header + offset, line, linelen);
+ continue;
+ }
+ memset(this_header + offset, ' ', 4);
+ memcpy(this_header + offset + 4, line, linelen);
+ offset += linelen + 4;
+ }
+ /* Make sure there is an EOLN */
+ if (this_header[offset-1] != '\n')
+ this_header[offset++] = '\n';
+ /* Add _another_ EOLN if we are doing diff output */
+ if (!silent)
+ this_header[offset++] = '\n';
+ this_header[offset] = 0;
+ }
+
+ return this_header;
+}
+
+static int diff_tree_commit(const unsigned char *commit, const char *name)
+{
+ unsigned long size, offset;
+ char *buf = read_object_with_reference(commit, "commit", &size, NULL);
+
if (!buf)
return -1;
+ if (!name) {
+ static char commit_name[60];
+ strcpy(commit_name, sha1_to_hex(commit));
+ name = commit_name;
+ }
+
+ /* Root commit? */
+ if (show_root_diff && memcmp(buf + 46, "parent ", 7)) {
+ header = generate_header(name, "root", buf, size);
+ diff_root_tree(commit, "");
+ }
+
/* More than one parent? */
if (ignore_merges) {
if (!memcmp(buf + 46 + 48, "parent ", 7))
return 0;
}
- line[40] = 0;
offset = 46;
while (offset + 48 < size && !memcmp(buf + offset, "parent ", 7)) {
+ unsigned char parent[20];
if (get_sha1_hex(buf + offset + 7, parent))
return -1;
- printf("%s %s:\n", line, sha1_to_hex(parent));
- diff_tree_sha1(parent, commit, "");
+ header = generate_header(name, sha1_to_hex(parent), buf, size);
+ diff_tree_sha1_top(parent, commit, "");
+ if (!header && verbose_header) {
+ header_prefix = "\ndiff-tree ";
+ /*
+ * Don't print multiple merge entries if we
+ * don't print the diffs.
+ */
+ if (silent)
+ break;
+ }
offset += 48;
}
- return -1;
+ return 0;
+}
+
+static int diff_tree_stdin(char *line)
+{
+ int len = strlen(line);
+ unsigned char commit[20], parent[20];
+ static char this_header[1000];
+
+ if (!len || line[len-1] != '\n')
+ return -1;
+ line[len-1] = 0;
+ if (get_sha1_hex(line, commit))
+ return -1;
+ if (isspace(line[40]) && !get_sha1_hex(line+41, parent)) {
+ line[40] = 0;
+ line[81] = 0;
+ sprintf(this_header, "%s (from %s)\n", line, line+41);
+ header = this_header;
+ return diff_tree_sha1_top(parent, commit, "");
+ }
+ line[40] = 0;
+ return diff_tree_commit(commit, line);
}
-static char *diff_tree_usage = "diff-tree [-p] [-r] [-z] <tree sha1> <tree sha1>";
+static char *diff_tree_usage =
+"git-diff-tree [-p] [-r] [-z] [--stdin] [-M] [-C] [-R] [-S<string>] [-m] [-s] [-v] <tree-ish> <tree-ish>";
-int main(int argc, char **argv)
+int main(int argc, const char **argv)
{
+ int nr_sha1;
char line[1000];
- unsigned char old[20], new[20];
+ unsigned char sha1[2][20];
+ nr_sha1 = 0;
for (;;) {
- char *arg;
+ const char *arg;
argv++;
argc--;
arg = *argv;
- if (!arg || *arg != '-')
+ if (!arg)
+ break;
+
+ if (*arg != '-') {
+ if (nr_sha1 < 2 && !get_sha1(arg, sha1[nr_sha1])) {
+ nr_sha1++;
+ continue;
+ }
break;
+ }
- if (!strcmp(arg, "-")) {
+ if (!strcmp(arg, "--")) {
argv++;
argc--;
break;
recursive = 1;
continue;
}
+ if (!strcmp(arg, "-R")) {
+ reverse_diff = 1;
+ continue;
+ }
if (!strcmp(arg, "-p")) {
- recursive = generate_patch = 1;
+ diff_output_format = DIFF_FORMAT_PATCH;
+ recursive = 1;
+ continue;
+ }
+ if (!strncmp(arg, "-S", 2)) {
+ pickaxe = arg + 2;
+ continue;
+ }
+ if (!strncmp(arg, "-M", 2)) {
+ detect_rename = DIFF_DETECT_RENAME;
+ diff_score_opt = diff_scoreopt_parse(arg);
+ continue;
+ }
+ if (!strncmp(arg, "-C", 2)) {
+ detect_rename = DIFF_DETECT_COPY;
+ diff_score_opt = diff_scoreopt_parse(arg);
continue;
}
if (!strcmp(arg, "-z")) {
- line_termination = '\0';
+ diff_output_format = DIFF_FORMAT_MACHINE;
continue;
}
if (!strcmp(arg, "-m")) {
ignore_merges = 0;
continue;
}
+ if (!strcmp(arg, "-s")) {
+ silent = 1;
+ continue;
+ }
+ if (!strcmp(arg, "-v")) {
+ verbose_header = 1;
+ header_prefix = "diff-tree ";
+ continue;
+ }
if (!strcmp(arg, "--stdin")) {
read_stdin = 1;
continue;
}
+ if (!strcmp(arg, "--root")) {
+ show_root_diff = 1;
+ continue;
+ }
usage(diff_tree_usage);
}
- if (!read_stdin) {
- if (argc < 2 || get_sha1(argv[0], old) || get_sha1(argv[1], new))
- usage(diff_tree_usage);
- argv += 2;
- argc -= 2;
- }
-
if (argc > 0) {
int i;
pathlens[i] = strlen(paths[i]);
}
+ switch (nr_sha1) {
+ case 0:
+ if (!read_stdin)
+ usage(diff_tree_usage);
+ break;
+ case 1:
+ diff_tree_commit(sha1[0], NULL);
+ break;
+ case 2:
+ diff_tree_sha1_top(sha1[0], sha1[1], "");
+ break;
+ }
+
if (!read_stdin)
- return diff_tree_sha1(old, new, "");
+ return 0;
while (fgets(line, sizeof(line), stdin))
diff_tree_stdin(line);
projects / git.git / blobdiff