Andrew's git - gitweb.git/blob

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