12. Block Reference (blkref)

Given a block name and program ID, return metadata information about the block, such as file, line number, and section it belongs to.

fprintf(stderr, "blkref: prints info about block\n");

static int get_blkref(int argc, char *argv[]);

static int get_blkref(int argc, char *argv[])
{
    wmp_core core;
    int rc;
    int prog;
    sqlite3_stmt *stmt;
    wmp_blkref br;
    const char *name;

    if (argc < 3) {
        fprintf(stderr, "Usage: %s NAME program_id\n", argv[0]);
        return 1;
    }

    rc = wmp_core_open(&core, wmp_filename_get());
    if (!rc) return 0;
    prog = atoi(argv[2]);
    name = argv[1];

    wmp_blkref_init(&br);

    rc = wmp_blkref_lookup_setup(&core, name, prog, &stmt);

    if (!rc) {
        fprintf(stderr,
                "Could not find block '%s' in program %d\n",
                name,
                prog);
    }

    while (1) {
        rc = wmp_blkref_lookup_step(&core, stmt, &br);
        if (!rc) break;
        printf("%s:%d\n",
               br.filename,
               br.linum);
    }

    wmp_core_close(&core);
    return 0;
}

else if (match(argv[1], len, "blkref", 6)) {
    argv++;
    argc--;
    get_blkref(argc, argv);
}

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