Staging
v0.5.1
v0.5.1
Revision b2c2e4c22c6a4fe151f02380d247cf3d9a9d5d1e authored by Jakub Narebski on 24 January 2010, 18:05:23 UTC, committed by Junio C Hamano on 25 January 2010, 01:48:08 UTC
In Internet Explorer 8 (IE8) the 'blame_incremental' view, which uses JavaScript to generate blame info using AJAX, sometimes hang at the beginning (at 0%) of blaming, e.g. for larger files with long history like git's own gitweb/gitweb.perl. The error shown by JavaScript console is "Unspecified error" at char:2 of the following line in gitweb/gitweb.js: if (xhr.readyState === 3 && xhr.status !== 200) { Debugging it using IE8 JScript debuger shown that the error occurs when trying to access xhr.status (xhr is XMLHttpRequest object). Watch for xhr object shows 'Unspecified error.' as "value" of xhr.status, and trying to access xhr.status from console throws error. This bug is some intermittent bug, depending on XMLHttpRequest timing, as it doesn't occur in all cases. It is probably caused by the fact that handleResponse is called from timer (pollTimer), to work around the fact that some browsers call onreadystatechange handler only once for each state change, and not like required for 'blame_incremental' as soon as new data is available from server. It looks like xhr object is not properly initialized; still it is a bug to throw an error when accessing xhr.status (and not use 'null' or 'undefined' as value). Work around this bug in IE8 by using try-catch block when accessing xhr.status. Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 026680f
builtin-diff-tree.c
#include "cache.h"
#include "diff.h"
#include "commit.h"
#include "log-tree.h"
#include "builtin.h"
static struct rev_info log_tree_opt;
static int diff_tree_commit_sha1(const unsigned char *sha1)
{
struct commit *commit = lookup_commit_reference(sha1);
if (!commit)
return -1;
return log_tree_commit(&log_tree_opt, commit);
}
/* Diff one or more commits. */
static int stdin_diff_commit(struct commit *commit, char *line, int len)
{
unsigned char sha1[20];
if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
/* Graft the fake parents locally to the commit */
int pos = 41;
struct commit_list **pptr, *parents;
/* Free the real parent list */
for (parents = commit->parents; parents; ) {
struct commit_list *tmp = parents->next;
free(parents);
parents = tmp;
}
commit->parents = NULL;
pptr = &(commit->parents);
while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
struct commit *parent = lookup_commit(sha1);
if (parent) {
pptr = &commit_list_insert(parent, pptr)->next;
}
pos += 41;
}
}
return log_tree_commit(&log_tree_opt, commit);
}
/* Diff two trees. */
static int stdin_diff_trees(struct tree *tree1, char *line, int len)
{
unsigned char sha1[20];
struct tree *tree2;
if (len != 82 || !isspace(line[40]) || get_sha1_hex(line + 41, sha1))
return error("Need exactly two trees, separated by a space");
tree2 = lookup_tree(sha1);
if (!tree2 || parse_tree(tree2))
return -1;
printf("%s %s\n", sha1_to_hex(tree1->object.sha1),
sha1_to_hex(tree2->object.sha1));
diff_tree_sha1(tree1->object.sha1, tree2->object.sha1,
"", &log_tree_opt.diffopt);
log_tree_diff_flush(&log_tree_opt);
return 0;
}
static int diff_tree_stdin(char *line)
{
int len = strlen(line);
unsigned char sha1[20];
struct object *obj;
if (!len || line[len-1] != '\n')
return -1;
line[len-1] = 0;
if (get_sha1_hex(line, sha1))
return -1;
obj = lookup_unknown_object(sha1);
if (!obj || !obj->parsed)
obj = parse_object(sha1);
if (!obj)
return -1;
if (obj->type == OBJ_COMMIT)
return stdin_diff_commit((struct commit *)obj, line, len);
if (obj->type == OBJ_TREE)
return stdin_diff_trees((struct tree *)obj, line, len);
error("Object %s is a %s, not a commit or tree",
sha1_to_hex(sha1), typename(obj->type));
return -1;
}
static const char diff_tree_usage[] =
"git diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
" -r diff recursively\n"
" --root include the initial commit as diff against /dev/null\n"
COMMON_DIFF_OPTIONS_HELP;
int cmd_diff_tree(int argc, const char **argv, const char *prefix)
{
int nr_sha1;
char line[1000];
struct object *tree1, *tree2;
static struct rev_info *opt = &log_tree_opt;
int read_stdin = 0;
init_revisions(opt, prefix);
git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
opt->abbrev = 0;
opt->diff = 1;
opt->disable_stdin = 1;
argc = setup_revisions(argc, argv, opt, NULL);
while (--argc > 0) {
const char *arg = *++argv;
if (!strcmp(arg, "--stdin")) {
read_stdin = 1;
continue;
}
usage(diff_tree_usage);
}
if (!opt->diffopt.output_format)
opt->diffopt.output_format = DIFF_FORMAT_RAW;
/*
* NOTE! We expect "a ^b" to be equal to "a..b", so we
* reverse the order of the objects if the second one
* is marked UNINTERESTING.
*/
nr_sha1 = opt->pending.nr;
switch (nr_sha1) {
case 0:
if (!read_stdin)
usage(diff_tree_usage);
break;
case 1:
tree1 = opt->pending.objects[0].item;
diff_tree_commit_sha1(tree1->sha1);
break;
case 2:
tree1 = opt->pending.objects[0].item;
tree2 = opt->pending.objects[1].item;
if (tree2->flags & UNINTERESTING) {
struct object *tmp = tree2;
tree2 = tree1;
tree1 = tmp;
}
diff_tree_sha1(tree1->sha1,
tree2->sha1,
"", &opt->diffopt);
log_tree_diff_flush(opt);
break;
}
if (read_stdin) {
if (opt->diffopt.detect_rename)
opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
DIFF_SETUP_USE_CACHE);
while (fgets(line, sizeof(line), stdin)) {
unsigned char sha1[20];
if (get_sha1_hex(line, sha1)) {
fputs(line, stdout);
fflush(stdout);
}
else
diff_tree_stdin(line);
}
}
return diff_result_code(&opt->diffopt, 0);
}
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