Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "submodule.h"
   3#include "dir.h"
   4#include "diff.h"
   5#include "commit.h"
   6#include "revision.h"
   7#include "run-command.h"
   8
   9static int add_submodule_odb(const char *path)
  10{
  11        struct strbuf objects_directory = STRBUF_INIT;
  12        struct alternate_object_database *alt_odb;
  13        int ret = 0;
  14
  15        strbuf_addf(&objects_directory, "%s/.git/objects/", path);
  16        if (!is_directory(objects_directory.buf)) {
  17                ret = -1;
  18                goto done;
  19        }
  20        /* avoid adding it twice */
  21        for (alt_odb = alt_odb_list; alt_odb; alt_odb = alt_odb->next)
  22                if (alt_odb->name - alt_odb->base == objects_directory.len &&
  23                                !strncmp(alt_odb->base, objects_directory.buf,
  24                                        objects_directory.len))
  25                        goto done;
  26
  27        alt_odb = xmalloc(objects_directory.len + 42 + sizeof(*alt_odb));
  28        alt_odb->next = alt_odb_list;
  29        strcpy(alt_odb->base, objects_directory.buf);
  30        alt_odb->name = alt_odb->base + objects_directory.len;
  31        alt_odb->name[2] = '/';
  32        alt_odb->name[40] = '\0';
  33        alt_odb->name[41] = '\0';
  34        alt_odb_list = alt_odb;
  35        prepare_alt_odb();
  36done:
  37        strbuf_release(&objects_directory);
  38        return ret;
  39}
  40
  41void show_submodule_summary(FILE *f, const char *path,
  42                unsigned char one[20], unsigned char two[20],
  43                unsigned dirty_submodule,
  44                const char *del, const char *add, const char *reset)
  45{
  46        struct rev_info rev;
  47        struct commit *commit, *left = left, *right = right;
  48        struct commit_list *merge_bases, *list;
  49        const char *message = NULL;
  50        struct strbuf sb = STRBUF_INIT;
  51        static const char *format = "  %m %s";
  52        int fast_forward = 0, fast_backward = 0;
  53
  54        if (is_null_sha1(two))
  55                message = "(submodule deleted)";
  56        else if (add_submodule_odb(path))
  57                message = "(not checked out)";
  58        else if (is_null_sha1(one))
  59                message = "(new submodule)";
  60        else if (!(left = lookup_commit_reference(one)) ||
  61                 !(right = lookup_commit_reference(two)))
  62                message = "(commits not present)";
  63
  64        if (!message) {
  65                init_revisions(&rev, NULL);
  66                setup_revisions(0, NULL, &rev, NULL);
  67                rev.left_right = 1;
  68                rev.first_parent_only = 1;
  69                left->object.flags |= SYMMETRIC_LEFT;
  70                add_pending_object(&rev, &left->object, path);
  71                add_pending_object(&rev, &right->object, path);
  72                merge_bases = get_merge_bases(left, right, 1);
  73                if (merge_bases) {
  74                        if (merge_bases->item == left)
  75                                fast_forward = 1;
  76                        else if (merge_bases->item == right)
  77                                fast_backward = 1;
  78                }
  79                for (list = merge_bases; list; list = list->next) {
  80                        list->item->object.flags |= UNINTERESTING;
  81                        add_pending_object(&rev, &list->item->object,
  82                                sha1_to_hex(list->item->object.sha1));
  83                }
  84                if (prepare_revision_walk(&rev))
  85                        message = "(revision walker failed)";
  86        }
  87
  88        strbuf_addf(&sb, "Submodule %s %s..", path,
  89                        find_unique_abbrev(one, DEFAULT_ABBREV));
  90        if (!fast_backward && !fast_forward)
  91                strbuf_addch(&sb, '.');
  92        strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV));
  93        if (dirty_submodule)
  94                strbuf_add(&sb, "-dirty", 6);
  95        if (message)
  96                strbuf_addf(&sb, " %s\n", message);
  97        else
  98                strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : "");
  99        fwrite(sb.buf, sb.len, 1, f);
 100
 101        if (!message) {
 102                while ((commit = get_revision(&rev))) {
 103                        struct pretty_print_context ctx = {0};
 104                        ctx.date_mode = rev.date_mode;
 105                        strbuf_setlen(&sb, 0);
 106                        if (commit->object.flags & SYMMETRIC_LEFT) {
 107                                if (del)
 108                                        strbuf_addstr(&sb, del);
 109                        }
 110                        else if (add)
 111                                strbuf_addstr(&sb, add);
 112                        format_commit_message(commit, format, &sb, &ctx);
 113                        if (reset)
 114                                strbuf_addstr(&sb, reset);
 115                        strbuf_addch(&sb, '\n');
 116                        fprintf(f, "%s", sb.buf);
 117                }
 118                clear_commit_marks(left, ~0);
 119                clear_commit_marks(right, ~0);
 120        }
 121        strbuf_release(&sb);
 122}
 123
 124int is_submodule_modified(const char *path)
 125{
 126        int len;
 127        struct child_process cp;
 128        const char *argv[] = {
 129                "status",
 130                "--porcelain",
 131                NULL,
 132        };
 133        char *env[4];
 134        struct strbuf buf = STRBUF_INIT;
 135
 136        strbuf_addf(&buf, "%s/.git/", path);
 137        if (!is_directory(buf.buf)) {
 138                strbuf_release(&buf);
 139                /* The submodule is not checked out, so it is not modified */
 140                return 0;
 141
 142        }
 143        strbuf_reset(&buf);
 144
 145        strbuf_addf(&buf, "GIT_WORK_TREE=%s", path);
 146        env[0] = strbuf_detach(&buf, NULL);
 147        strbuf_addf(&buf, "GIT_DIR=%s/.git", path);
 148        env[1] = strbuf_detach(&buf, NULL);
 149        strbuf_addf(&buf, "GIT_INDEX_FILE");
 150        env[2] = strbuf_detach(&buf, NULL);
 151        env[3] = NULL;
 152
 153        memset(&cp, 0, sizeof(cp));
 154        cp.argv = argv;
 155        cp.env = (const char *const *)env;
 156        cp.git_cmd = 1;
 157        cp.no_stdin = 1;
 158        cp.out = -1;
 159        if (start_command(&cp))
 160                die("Could not run git status --porcelain");
 161
 162        len = strbuf_read(&buf, cp.out, 1024);
 163        close(cp.out);
 164
 165        if (finish_command(&cp))
 166                die("git status --porcelain failed");
 167
 168        free(env[0]);
 169        free(env[1]);
 170        free(env[2]);
 171        strbuf_release(&buf);
 172        return len != 0;
 173}