-static void read_rr(struct path_list *rr)
-{
- unsigned char sha1[20];
- char buf[PATH_MAX];
- FILE *in = fopen(merge_rr_path, "r");
- if (!in)
- return;
- while (fread(buf, 40, 1, in) == 1) {
- int i;
- char *name;
- if (get_sha1_hex(buf, sha1))
- die("corrupt MERGE_RR");
- buf[40] = '\0';
- name = xstrdup(buf);
- if (fgetc(in) != '\t')
- die("corrupt MERGE_RR");
- for (i = 0; i < sizeof(buf) && (buf[i] = fgetc(in)); i++)
- ; /* do nothing */
- if (i == sizeof(buf))
- die("filename too long");
- path_list_insert(buf, rr)->util = name;
- }
- fclose(in);
-}
-
-static struct lock_file write_lock;
-
-static int write_rr(struct path_list *rr, int out_fd)
-{
- int i;
- for (i = 0; i < rr->nr; i++) {
- const char *path;
- int length;
- if (!rr->items[i].util)
- continue;
- path = rr->items[i].path;
- length = strlen(path) + 1;
- if (write_in_full(out_fd, rr->items[i].util, 40) != 40 ||
- write_in_full(out_fd, "\t", 1) != 1 ||
- write_in_full(out_fd, path, length) != length)
- die("unable to write rerere record");
- }
- if (commit_lock_file(&write_lock) != 0)
- die("unable to write rerere record");
- return 0;
-}
-
-static int handle_file(const char *path,
- unsigned char *sha1, const char *output)
-{
- SHA_CTX ctx;
- char buf[1024];
- int hunk = 0, hunk_no = 0;
- struct strbuf one, two;
- FILE *f = fopen(path, "r");
- FILE *out = NULL;
-
- if (!f)
- return error("Could not open %s", path);
-
- if (output) {
- out = fopen(output, "w");
- if (!out) {
- fclose(f);
- return error("Could not write %s", output);
- }
- }
-
- if (sha1)
- SHA1_Init(&ctx);
-
- strbuf_init(&one, 0);
- strbuf_init(&two, 0);
- while (fgets(buf, sizeof(buf), f)) {
- if (!prefixcmp(buf, "<<<<<<< "))
- hunk = 1;
- else if (!prefixcmp(buf, "======="))
- hunk = 2;
- else if (!prefixcmp(buf, ">>>>>>> ")) {
- if (strbuf_cmp(&one, &two) > 0)
- strbuf_swap(&one, &two);
- hunk_no++;
- hunk = 0;
- if (out) {
- fputs("<<<<<<<\n", out);
- fwrite(one.buf, one.len, 1, out);
- fputs("=======\n", out);
- fwrite(two.buf, two.len, 1, out);
- fputs(">>>>>>>\n", out);
- }
- if (sha1) {
- SHA1_Update(&ctx, one.buf ? one.buf : "",
- one.len + 1);
- SHA1_Update(&ctx, two.buf ? two.buf : "",
- two.len + 1);
- }
- strbuf_reset(&one);
- strbuf_reset(&two);
- } else if (hunk == 1)
- strbuf_addstr(&one, buf);
- else if (hunk == 2)
- strbuf_addstr(&two, buf);
- else if (out)
- fputs(buf, out);
- }
- strbuf_release(&one);
- strbuf_release(&two);
-
- fclose(f);
- if (out)
- fclose(out);
- if (sha1)
- SHA1_Final(sha1, &ctx);
- if (hunk) {
- if (output)
- unlink(output);
- return error("Could not parse conflict hunks in %s", path);
- }
- return hunk_no;
-}
-
-static int find_conflict(struct path_list *conflict)
-{
- int i;
- if (read_cache() < 0)
- return error("Could not read index");
- for (i = 0; i+1 < active_nr; i++) {
- struct cache_entry *e2 = active_cache[i];
- struct cache_entry *e3 = active_cache[i+1];
- if (ce_stage(e2) == 2 &&
- ce_stage(e3) == 3 &&
- ce_same_name(e2, e3) &&
- S_ISREG(e2->ce_mode) &&
- S_ISREG(e3->ce_mode)) {
- path_list_insert((const char *)e2->name, conflict);
- i++; /* skip over both #2 and #3 */
- }
- }
- return 0;
-}
-
-static int merge(const char *name, const char *path)
-{
- int ret;
- mmfile_t cur, base, other;
- mmbuffer_t result = {NULL, 0};
- xpparam_t xpp = {XDF_NEED_MINIMAL};
-
- if (handle_file(path, NULL, rr_path(name, "thisimage")) < 0)
- return 1;
-
- if (read_mmfile(&cur, rr_path(name, "thisimage")) ||
- read_mmfile(&base, rr_path(name, "preimage")) ||
- read_mmfile(&other, rr_path(name, "postimage")))
- return 1;
- ret = xdl_merge(&base, &cur, "", &other, "",
- &xpp, XDL_MERGE_ZEALOUS, &result);
- if (!ret) {
- FILE *f = fopen(path, "w");
- if (!f)
- return error("Could not write to %s", path);
- fwrite(result.ptr, result.size, 1, f);
- fclose(f);
- }
-
- free(cur.ptr);
- free(base.ptr);
- free(other.ptr);
- free(result.ptr);
-
- return ret;
-}
-