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Merge branch 'mm/diag-path-in-treeish'

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* mm/diag-path-in-treeish:
  Detailed diagnosis when parsing an object name fails.
This commit is contained in:
Junio C Hamano 2010-01-10 08:52:10 -08:00
commit 2b35fccf73
4 changed files with 198 additions and 7 deletions
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6
cache.h
View File

@ -702,7 +702,11 @@ static inline unsigned int hexval(unsigned char c)
#define DEFAULT_ABBREV 7
extern int get_sha1(const char *str, unsigned char *sha1);
extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix);
static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode)
{
return get_sha1_with_mode_1(str, sha1, mode, 1, NULL);
}
extern int get_sha1_hex(const char *hex, unsigned char *sha1);
extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
extern int read_ref(const char *filename, unsigned char *sha1);

15
setup.c
View File

@ -77,6 +77,18 @@ int check_filename(const char *prefix, const char *arg)
die_errno("failed to stat '%s'", arg);
}
static void NORETURN die_verify_filename(const char *prefix, const char *arg)
{
unsigned char sha1[20];
unsigned mode;
/* try a detailed diagnostic ... */
get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix);
/* ... or fall back the most general message. */
die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
"Use '--' to separate paths from revisions", arg);
}
/*
* Verify a filename that we got as an argument for a pathspec
* entry. Note that a filename that begins with "-" never verifies
@ -90,8 +102,7 @@ void verify_filename(const char *prefix, const char *arg)
die("bad flag '%s' used after filename", arg);
if (check_filename(prefix, arg))
return;
die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
"Use '--' to separate paths from revisions", arg);
die_verify_filename(prefix, arg);
}
/*

115
sha1_name.c
View File

@ -804,7 +804,96 @@ int get_sha1(const char *name, unsigned char *sha1)
return get_sha1_with_mode(name, sha1, &unused);
}
int get_sha1_with_mode(const char *name, unsigned char *sha1, unsigned *mode)
/* Must be called only when object_name:filename doesn't exist. */
static void diagnose_invalid_sha1_path(const char *prefix,
const char *filename,
const unsigned char *tree_sha1,
const char *object_name)
{
struct stat st;
unsigned char sha1[20];
unsigned mode;
if (!prefix)
prefix = "";
if (!lstat(filename, &st))
die("Path '%s' exists on disk, but not in '%s'.",
filename, object_name);
if (errno == ENOENT || errno == ENOTDIR) {
char *fullname = xmalloc(strlen(filename)
+ strlen(prefix) + 1);
strcpy(fullname, prefix);
strcat(fullname, filename);
if (!get_tree_entry(tree_sha1, fullname,
sha1, &mode)) {
die("Path '%s' exists, but not '%s'.\n"
"Did you mean '%s:%s'?",
fullname,
filename,
object_name,
fullname);
}
die("Path '%s' does not exist in '%s'",
filename, object_name);
}
}
/* Must be called only when :stage:filename doesn't exist. */
static void diagnose_invalid_index_path(int stage,
const char *prefix,
const char *filename)
{
struct stat st;
struct cache_entry *ce;
int pos;
unsigned namelen = strlen(filename);
unsigned fullnamelen;
char *fullname;
if (!prefix)
prefix = "";
/* Wrong stage number? */
pos = cache_name_pos(filename, namelen);
if (pos < 0)
pos = -pos - 1;
ce = active_cache[pos];
if (ce_namelen(ce) == namelen &&
!memcmp(ce->name, filename, namelen))
die("Path '%s' is in the index, but not at stage %d.\n"
"Did you mean ':%d:%s'?",
filename, stage,
ce_stage(ce), filename);
/* Confusion between relative and absolute filenames? */
fullnamelen = namelen + strlen(prefix);
fullname = xmalloc(fullnamelen + 1);
strcpy(fullname, prefix);
strcat(fullname, filename);
pos = cache_name_pos(fullname, fullnamelen);
if (pos < 0)
pos = -pos - 1;
ce = active_cache[pos];
if (ce_namelen(ce) == fullnamelen &&
!memcmp(ce->name, fullname, fullnamelen))
die("Path '%s' is in the index, but not '%s'.\n"
"Did you mean ':%d:%s'?",
fullname, filename,
ce_stage(ce), fullname);
if (!lstat(filename, &st))
die("Path '%s' exists on disk, but not in the index.", filename);
if (errno == ENOENT || errno == ENOTDIR)
die("Path '%s' does not exist (neither on disk nor in the index).",
filename);
free(fullname);
}
int get_sha1_with_mode_1(const char *name, unsigned char *sha1, unsigned *mode, int gently, const char *prefix)
{
int ret, bracket_depth;
int namelen = strlen(name);
@ -850,6 +939,8 @@ int get_sha1_with_mode(const char *name, unsigned char *sha1, unsigned *mode)
}
pos++;
}
if (!gently)
diagnose_invalid_index_path(stage, prefix, cp);
return -1;
}
for (cp = name, bracket_depth = 0; *cp; cp++) {
@ -862,9 +953,25 @@ int get_sha1_with_mode(const char *name, unsigned char *sha1, unsigned *mode)
}
if (*cp == ':') {
unsigned char tree_sha1[20];
if (!get_sha1_1(name, cp-name, tree_sha1))
return get_tree_entry(tree_sha1, cp+1, sha1,
mode);
char *object_name = NULL;
if (!gently) {
object_name = xmalloc(cp-name+1);
strncpy(object_name, name, cp-name);
object_name[cp-name] = '\0';
}
if (!get_sha1_1(name, cp-name, tree_sha1)) {
const char *filename = cp+1;
ret = get_tree_entry(tree_sha1, filename, sha1, mode);
if (!gently) {
diagnose_invalid_sha1_path(prefix, filename,
tree_sha1, object_name);
free(object_name);
}
return ret;
} else {
if (!gently)
die("Invalid object name '%s'.", object_name);
}
}
return ret;
}

69
t/t1506-rev-parse-diagnosis.sh Executable file
View File

@ -0,0 +1,69 @@
#!/bin/sh
test_description='test git rev-parse diagnosis for invalid argument'
exec </dev/null
. ./test-lib.sh
HASH_file=
test_expect_success 'set up basic repo' '
echo one > file.txt &&
mkdir subdir &&
echo two > subdir/file.txt &&
echo three > subdir/file2.txt &&
git add . &&
git commit -m init &&
echo four > index-only.txt &&
git add index-only.txt &&
echo five > disk-only.txt
'
test_expect_success 'correct file objects' '
HASH_file=$(git rev-parse HEAD:file.txt) &&
git rev-parse HEAD:subdir/file.txt &&
git rev-parse :index-only.txt &&
(cd subdir &&
git rev-parse HEAD:subdir/file2.txt &&
test $HASH_file = $(git rev-parse HEAD:file.txt) &&
test $HASH_file = $(git rev-parse :file.txt) &&
test $HASH_file = $(git rev-parse :0:file.txt) )
'
test_expect_success 'incorrect revision id' '
test_must_fail git rev-parse foobar:file.txt 2>error &&
grep "Invalid object name '"'"'foobar'"'"'." error &&
test_must_fail git rev-parse foobar 2> error &&
grep "unknown revision or path not in the working tree." error
'
test_expect_success 'incorrect file in sha1:path' '
test_must_fail git rev-parse HEAD:nothing.txt 2> error &&
grep "fatal: Path '"'"'nothing.txt'"'"' does not exist in '"'"'HEAD'"'"'" error &&
test_must_fail git rev-parse HEAD:index-only.txt 2> error &&
grep "fatal: Path '"'"'index-only.txt'"'"' exists on disk, but not in '"'"'HEAD'"'"'." error &&
(cd subdir &&
test_must_fail git rev-parse HEAD:file2.txt 2> error &&
grep "Did you mean '"'"'HEAD:subdir/file2.txt'"'"'?" error )
'
test_expect_success 'incorrect file in :path and :N:path' '
test_must_fail git rev-parse :nothing.txt 2> error &&
grep "fatal: Path '"'"'nothing.txt'"'"' does not exist (neither on disk nor in the index)." error &&
test_must_fail git rev-parse :1:nothing.txt 2> error &&
grep "Path '"'"'nothing.txt'"'"' does not exist (neither on disk nor in the index)." error &&
test_must_fail git rev-parse :1:file.txt 2> error &&
grep "Did you mean '"'"':0:file.txt'"'"'?" error &&
(cd subdir &&
test_must_fail git rev-parse :1:file.txt 2> error &&
grep "Did you mean '"'"':0:file.txt'"'"'?" error &&
test_must_fail git rev-parse :file2.txt 2> error &&
grep "Did you mean '"'"':0:subdir/file2.txt'"'"'?" error &&
test_must_fail git rev-parse :2:file2.txt 2> error &&
grep "Did you mean '"'"':0:subdir/file2.txt'"'"'?" error) &&
test_must_fail git rev-parse :disk-only.txt 2> error &&
grep "fatal: Path '"'"'disk-only.txt'"'"' exists on disk, but not in the index." error
'
test_done