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.out_hunk = NULL;
  45        ecb.out_line = outf;
  46        ret = xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
  47
  48        free(minus.ptr);
  49        free(plus.ptr);
  50        return ret;
  51}
  52
  53int cmd_rerere(int argc, const char **argv, const char *prefix)
  54{
  55        struct string_list merge_rr = STRING_LIST_INIT_DUP;
  56        int i, autoupdate = -1, flags = 0;
  57
  58        struct option options[] = {
  59                OPT_SET_INT(0, "rerere-autoupdate", &autoupdate,
  60                        N_("register clean resolutions in index"), 1),
  61                OPT_END(),
  62        };
  63
  64        argc = parse_options(argc, argv, prefix, options, rerere_usage, 0);
  65
  66        git_config(git_xmerge_config, NULL);
  67
  68        if (autoupdate == 1)
  69                flags = RERERE_AUTOUPDATE;
  70        if (autoupdate == 0)
  71                flags = RERERE_NOAUTOUPDATE;
  72
  73        if (argc < 1)
  74                return rerere(flags);
  75
  76        if (!strcmp(argv[0], "forget")) {
  77                struct pathspec pathspec;
  78                if (argc < 2)
  79                        warning("'git rerere forget' without paths is deprecated");
  80                parse_pathspec(&pathspec, 0, PATHSPEC_PREFER_CWD,
  81                               prefix, argv + 1);
  82                return rerere_forget(&pathspec);
  83        }
  84
  85        if (!strcmp(argv[0], "clear")) {
  86                rerere_clear(&merge_rr);
  87        } else if (!strcmp(argv[0], "gc"))
  88                rerere_gc(&merge_rr);
  89        else if (!strcmp(argv[0], "status")) {
  90                if (setup_rerere(&merge_rr, flags | RERERE_READONLY) < 0)
  91                        return 0;
  92                for (i = 0; i < merge_rr.nr; i++)
  93                        printf("%s\n", merge_rr.items[i].string);
  94        } else if (!strcmp(argv[0], "remaining")) {
  95                rerere_remaining(&merge_rr);
  96                for (i = 0; i < merge_rr.nr; i++) {
  97                        if (merge_rr.items[i].util != RERERE_RESOLVED)
  98                                printf("%s\n", merge_rr.items[i].string);
  99                        else
 100                                /* prepare for later call to
 101                                 * string_list_clear() */
 102                                merge_rr.items[i].util = NULL;
 103                }
 104        } else if (!strcmp(argv[0], "diff")) {
 105                if (setup_rerere(&merge_rr, flags | RERERE_READONLY) < 0)
 106                        return 0;
 107                for (i = 0; i < merge_rr.nr; i++) {
 108                        const char *path = merge_rr.items[i].string;
 109                        const struct rerere_id *id = merge_rr.items[i].util;
 110                        if (diff_two(rerere_path(id, "preimage"), path, path, path))
 111                                die("unable to generate diff for %s", rerere_path(id, NULL));
 112                }
 113        } else
 114                usage_with_options(rerere_usage, options);
 115
 116        string_list_clear(&merge_rr, 1);
 117        return 0;
 118}