Make git read the resolve-undo data from the index.
Since the resolve-undo data is joined with the conflicts in
the ondisk format of the index file version 5, conflicts and
resolved data is read at the same time, and the resolve-undo
data is then converted to the in-memory format.
Helped-by: Thomas Rast <tr...@student.ethz.ch>
Signed-off-by: Thomas Gummerer <t.gumme...@gmail.com>
---
read-cache-v5.c | 130 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 130 insertions(+)
diff --git a/read-cache-v5.c b/read-cache-v5.c
index 799b8e7..85a2069 100644
--- a/read-cache-v5.c
+++ b/read-cache-v5.c
@@ -1,5 +1,6 @@
#include "cache.h"
#include "read-cache.h"
+#include "string-list.h"
#include "resolve-undo.h"
#include "cache-tree.h"
#include "dir.h"
@@ -308,6 +309,31 @@ static int read_entry(struct cache_entry **ce, char
*pathname, size_t pathlen,
return 0;
}
+static struct conflict_part *conflict_part_from_ondisk(struct
ondisk_conflict_part *ondisk)
+{
+ struct conflict_part *cp = xmalloc(sizeof(struct conflict_part));
+
+ cp->flags = ntoh_s(ondisk->flags);
+ cp->entry_mode = ntoh_s(ondisk->entry_mode);
+ hashcpy(cp->sha1, ondisk->sha1);
+ return cp;
+}
+
+static void conflict_entry_push(struct conflict_entry **head,
+ struct conflict_entry **tail,
+ struct conflict_entry *conflict_entry)
+{
+ if (!*head) {
+ *head = *tail = conflict_entry;
+ (*tail)->next = NULL;
+ return;
+ }
+
+ (*tail)->next = conflict_entry;
+ conflict_entry->next = NULL;
+ *tail = (*tail)->next;
+}
+
struct conflict_entry *create_new_conflict(char *name, int len, int pathlen)
{
struct conflict_entry *conflict_entry;
@@ -345,6 +371,106 @@ void add_part_to_conflict_entry(struct directory_entry
*de,
}
}
+static int read_conflicts(struct conflict_entry **head,
+ struct directory_entry *de,
+ void *mmap, unsigned long mmap_size)
+{
+ struct conflict_entry *tail;
+ unsigned int croffset, i;
+ char *full_name;
+
+ croffset = de->de_cr;
+ tail = NULL;
+ for (i = 0; i < de->de_ncr; i++) {
+ struct conflict_entry *conflict_new;
+ unsigned int len, *nfileconflicts;
+ char *name;
+ void *crc_start;
+ int k, offset;
+ uint32_t *filecrc;
+
+ offset = croffset;
+ crc_start = ptr_add(mmap, offset);
+ name = ptr_add(mmap, offset);
+ len = strlen(name);
+ offset += len + 1;
+ nfileconflicts = ptr_add(mmap, offset);
+ offset += 4;
+
+ full_name = xmalloc(sizeof(char) * (len + de->de_pathlen));
+ memcpy(full_name, de->pathname, de->de_pathlen);
+ memcpy(full_name + de->de_pathlen, name, len);
+ conflict_new = create_new_conflict(full_name,
+ len + de->de_pathlen, de->de_pathlen);
+ for (k = 0; k < ntoh_l(*nfileconflicts); k++) {
+ struct ondisk_conflict_part *ondisk;
+ struct conflict_part *cp;
+
+ ondisk = ptr_add(mmap, offset);
+ cp = conflict_part_from_ondisk(ondisk);
+ cp->next = NULL;
+ add_part_to_conflict_entry(de, conflict_new, cp);
+ offset += sizeof(struct ondisk_conflict_part);
+ }
+ filecrc = ptr_add(mmap, offset);
+ free(full_name);
+ if (!check_crc32(0, crc_start,
+ len + 1 + 4 + conflict_new->nfileconflicts
+ * sizeof(struct ondisk_conflict_part),
+ ntoh_l(*filecrc)))
+ return -1;
+ croffset = offset + 4;
+ conflict_entry_push(head, &tail, conflict_new);
+ }
+ return 0;
+}
+
+static int convert_resolve_undo(struct index_state *istate,
+ struct directory_entry *de,
+ void *mmap, unsigned long mmap_size)
+{
+ int i;
+ struct conflict_entry *conflicts = NULL;
+
+ if (read_conflicts(&conflicts, de, mmap, mmap_size) < 0)
+ return -1;
+
+ while (conflicts) {
+ struct string_list_item *lost;
+ struct resolve_undo_info *ui;
+ struct conflict_part *cp;
+
+ if (conflicts->entries &&
+ (conflicts->entries->flags & CONFLICT_CONFLICTED)) {
+ conflicts = conflicts->next;
+ continue;
+ }
+ if (!istate->resolve_undo) {
+ istate->resolve_undo = xcalloc(1, sizeof(struct
string_list));
+ istate->resolve_undo->strdup_strings = 1;
+ }
+
+ lost = string_list_insert(istate->resolve_undo,
conflicts->name);
+ if (!lost->util)
+ lost->util = xcalloc(1, sizeof(*ui));
+ ui = lost->util;
+
+ cp = conflicts->entries;
+ for (i = 0; i < 3; i++)
+ ui->mode[i] = 0;
+ while (cp) {
+ ui->mode[conflict_stage(cp) - 1] = cp->entry_mode;
+ hashcpy(ui->sha1[conflict_stage(cp) - 1], cp->sha1);
+ cp = cp->next;
+ }
+ conflicts = conflicts->next;
+ }
+ for (i = 0; i < de->de_nsubtrees; i++)
+ if (convert_resolve_undo(istate, de->sub[i], mmap, mmap_size) <
0)
+ return -1;
+ return 0;
+}
+
static int read_entries(struct index_state *istate, struct directory_entry *de,
unsigned int first_entry_offset, void *mmap,
unsigned long mmap_size, unsigned int *nr,
@@ -444,6 +570,10 @@ static int read_index_v5(struct index_state *istate, void
*mmap,
if (!need_root)
parse_pathspec(&adjusted_pathspec, PATHSPEC_ALL_MAGIC,
PATHSPEC_PREFER_CWD, NULL, paths);
+ if (!opts || opts->read_resolve_undo)
+ if (convert_resolve_undo(istate, root_directory, mmap,
mmap_size) < 0)
+ return -1;
+
de = root_directory;
last_de = de;
while (de) {
--
1.8.3.4.1231.g9fbf354.dirty
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