Andrew's git - gitweb.git/blob

   1#include "builtin.h"
   2#include "cache.h"
   3#include "config.h"
   4#include "dir.h"
   5#include "parse-options.h"
   6#include "string-list.h"
   7#include "rerere.h"
   8#include "xdiff/xdiff.h"
   9#include "xdiff-interface.h"
  10#include "pathspec.h"
  11
  12static const char * const rerere_usage[] = {
  13        N_("git rerere [clear | forget <path>... | status | remaining | diff | gc]"),
  14        NULL,
  15};
  16
  17static int outf(void *dummy, mmbuffer_t *ptr, int nbuf)
  18{
  19        int i;
  20        for (i = 0; i < nbuf; i++)
  21                if (write_in_full(1, ptr[i].ptr, ptr[i].size) < 0)
  22                        return -1;
  23        return 0;
  24}
  25
  26static int diff_two(const char *file1, const char *label1,
  27                const char *file2, const char *label2)
  28{
  29        xpparam_t xpp;
  30        xdemitconf_t xecfg;
  31        xdemitcb_t ecb;
  32        mmfile_t minus, plus;
  33        int ret;
  34
  35        if (read_mmfile(&minus, file1) || read_mmfile(&plus, file2))
  36                return -1;
  37
  38        printf("--- a/%s\n+++ b/%s\n", label1, label2);
  39        fflush(stdout);
  40        memset(&xpp, 0, sizeof(xpp));
  41        xpp.flags = 0;
  42        memset(&xecfg, 0, sizeof(xecfg));
  43        xecfg.ctxlen = 3;
  44        ecb.outf = outf;
  45        ret = xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
  46
  47        free(minus.ptr);
  48        free(plus.ptr);
  49        return ret;
  50}
  51
  52int cmd_rerere(int argc, const char **argv, const char *prefix)
  53{
  54        struct string_list merge_rr = STRING_LIST_INIT_DUP;
  55        int i, autoupdate = -1, flags = 0;
  56
  57        struct option options[] = {
  58                OPT_SET_INT(0, "rerere-autoupdate", &autoupdate,
  59                        N_("register clean resolutions in index"), 1),
  60                OPT_END(),
  61        };
  62
  63        argc = parse_options(argc, argv, prefix, options, rerere_usage, 0);
  64
  65        git_config(git_xmerge_config, NULL);
  66
  67        if (autoupdate == 1)
  68                flags = RERERE_AUTOUPDATE;
  69        if (autoupdate == 0)
  70                flags = RERERE_NOAUTOUPDATE;
  71
  72        if (argc < 1)
  73                return rerere(flags);
  74
  75        if (!strcmp(argv[0], "forget")) {
  76                struct pathspec pathspec;
  77                if (argc < 2)
  78                        warning("'git rerere forget' without paths is deprecated");
  79                parse_pathspec(&pathspec, 0, PATHSPEC_PREFER_CWD,
  80                               prefix, argv + 1);
  81                return rerere_forget(&pathspec);
  82        }
  83
  84        if (!strcmp(argv[0], "clear")) {
  85                rerere_clear(&merge_rr);
  86        } else if (!strcmp(argv[0], "gc"))
  87                rerere_gc(&merge_rr);
  88        else if (!strcmp(argv[0], "status")) {
  89                if (setup_rerere(&merge_rr, flags | RERERE_READONLY) < 0)
  90                        return 0;
  91                for (i = 0; i < merge_rr.nr; i++)
  92                        printf("%s\n", merge_rr.items[i].string);
  93        } else if (!strcmp(argv[0], "remaining")) {
  94                rerere_remaining(&merge_rr);
  95                for (i = 0; i < merge_rr.nr; i++) {
  96                        if (merge_rr.items[i].util != RERERE_RESOLVED)
  97                                printf("%s\n", merge_rr.items[i].string);
  98                        else
  99                                /* prepare for later call to
 100                                 * string_list_clear() */
 101                                merge_rr.items[i].util = NULL;
 102                }
 103        } else if (!strcmp(argv[0], "diff")) {
 104                if (setup_rerere(&merge_rr, flags | RERERE_READONLY) < 0)
 105                        return 0;
 106                for (i = 0; i < merge_rr.nr; i++) {
 107                        const char *path = merge_rr.items[i].string;
 108                        const struct rerere_id *id = merge_rr.items[i].util;
 109                        if (diff_two(rerere_path(id, "preimage"), path, path, path))
 110                                die("unable to generate diff for %s", rerere_path(id, NULL));
 111                }
 112        } else
 113                usage_with_options(rerere_usage, options);
 114
 115        string_list_clear(&merge_rr, 1);
 116        return 0;
 117}