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