C++ (Cpp) _zip_find_central_dir示例

示例#1

文件： zip_open.c 项目： Distrotech/libzip

struct zip *
_zip_open(const char *fn, FILE *fp, int flags, int aflags, int *zep)
{
    struct zip *za;
    struct zip_cdir *cdir;
    int i;
    off_t len;

    if (fseeko(fp, 0, SEEK_END) < 0) {
	*zep = ZIP_ER_SEEK;
	return NULL;
    }
    len = ftello(fp);

    /* treat empty files as empty archives */
    if (len == 0) {
	if ((za=_zip_allocate_new(fn, zep)) == NULL)
	    fclose(fp);
	else
	    za->zp = fp;
	return za;
    }

    cdir = _zip_find_central_dir(fp, flags, zep, len);
    if (cdir == NULL) {
	fclose(fp);
	return NULL;
    }

    if ((za=_zip_allocate_new(fn, zep)) == NULL) {
	_zip_cdir_free(cdir);
	fclose(fp);
	return NULL;
    }

    za->cdir = cdir;
    za->zp = fp;

    if ((za->entry=(struct zip_entry *)malloc(sizeof(*(za->entry))
					      * cdir->nentry)) == NULL) {
	set_error(zep, NULL, ZIP_ER_MEMORY);
	_zip_free(za);
	return NULL;
    }
    for (i=0; i<cdir->nentry; i++)
	_zip_entry_new(za);

    _zip_check_torrentzip(za);
    za->ch_flags = za->flags;

    return za;
}

示例#2

文件： zip_open.c 项目： jmanek/lib3mf

zip_t *
_zip_open(zip_source_t *src, unsigned int flags, zip_error_t *error)
{
    zip_t *za;
    zip_cdir_t *cdir;
    struct zip_stat st;
    zip_uint64_t len;

    zip_stat_init(&st);
    if (zip_source_stat(src, &st) < 0) {
	_zip_error_set_from_source(error, src);
	return NULL;
    }
    if ((st.valid & ZIP_STAT_SIZE) == 0) {
	zip_error_set(error, ZIP_ER_SEEK, EOPNOTSUPP);
	return NULL;
    }
    len = st.size;

    /* treat empty files as empty archives */
    if (len == 0) {
	if ((za=_zip_allocate_new(src, flags, error)) == NULL) {
	    zip_source_free(src);
	    return NULL;
	}

	return za;
    }

    if ((za=_zip_allocate_new(src, flags, error)) == NULL) {
        return NULL;
    }
    
    if ((cdir = _zip_find_central_dir(za, len)) == NULL) {
        _zip_error_copy(error, &za->error);
	/* keep src so discard does not get rid of it */
	zip_source_keep(src);
	zip_discard(za);
	return NULL;
    }

    za->entry = cdir->entry;
    za->nentry = cdir->nentry;
    za->nentry_alloc = cdir->nentry_alloc;
    za->comment_orig = cdir->comment;
    
    za->ch_flags = za->flags;

    free(cdir);

    return za;
}

示例#3

文件： zip_open.c 项目： Crell/php-src

struct zip *
_zip_open(const char *fn, FILE *fp, unsigned int flags, int *zep)
{
    struct zip *za;
    struct zip_cdir *cdir;
    off_t len;

    if (fseeko(fp, 0, SEEK_END) < 0) {
	*zep = ZIP_ER_SEEK;
	return NULL;
    }
    len = ftello(fp);

    /* treat empty files as empty archives */
    if (len == 0) {
	if ((za=_zip_allocate_new(fn, flags, zep)) == NULL)
	    fclose(fp);
	else
	    za->zp = fp;
	return za;
    }

    cdir = _zip_find_central_dir(fp, flags, zep, len);
    if (cdir == NULL) {
	fclose(fp);
	return NULL;
    }

    if ((za=_zip_allocate_new(fn, flags, zep)) == NULL) {
	_zip_cdir_free(cdir);
	fclose(fp);
	return NULL;
    }

    za->entry = cdir->entry;
    za->nentry = cdir->nentry;
    za->nentry_alloc = cdir->nentry_alloc;
    za->comment_orig = cdir->comment;

    za->zp = fp;

    _zip_check_torrentzip(za, cdir);

    za->ch_flags = za->flags;

    free(cdir);

    return za;
}

示例#4

ZIP_EXTERN struct zip *
zip_open(const char *fn, int flags, int *zep)
{
    FILE *fp;
    struct zip *za;
    struct zip_cdir *cdir;
    int i;
    off_t len;
    
    switch (_zip_file_exists(fn, flags, zep)) {
    case -1:
	return NULL;
    case 0:
	return _zip_allocate_new(fn, zep);
    default:
	break;
    }

    if ((fp=fopen(fn, "rb")) == NULL) {
	set_error(zep, NULL, ZIP_ER_OPEN);
	return NULL;
    }

    fseeko(fp, 0, SEEK_END);
    len = ftello(fp);

    /* treat empty files as empty archives */
    if (len == 0) {
	if ((za=_zip_allocate_new(fn, zep)) == NULL)
	    fclose(fp);
	else
	    za->zp = fp;
	return za;
    }

    cdir = _zip_find_central_dir(fp, flags, zep, len);
    if (cdir == NULL) {
	fclose(fp);
	return NULL;
    }

    if ((za=_zip_allocate_new(fn, zep)) == NULL) {
	_zip_cdir_free(cdir);
	fclose(fp);
	return NULL;
    }

    za->cdir = cdir;
    za->zp = fp;

    if ((za->entry=(struct zip_entry *)malloc(sizeof(*(za->entry))
					      * cdir->nentry)) == NULL) {
	set_error(zep, NULL, ZIP_ER_MEMORY);
	_zip_free(za);
	return NULL;
    }
    for (i=0; i<cdir->nentry; i++)
	_zip_entry_new(za);

    _zip_check_torrentzip(za);
    za->ch_flags = za->flags;

    return za;
}

示例#5

文件： zip_open.c 项目： newser/TitanSDK

zip_t *
_zip_open(zip_source_t *src, unsigned int flags, zip_error_t *error)
{
    zip_t *za;
    zip_cdir_t *cdir;
    struct zip_stat st;
    zip_uint64_t len, idx;

    zip_stat_init(&st);
    if (zip_source_stat(src, &st) < 0) {
	_zip_error_set_from_source(error, src);
	return NULL;
    }
    if ((st.valid & ZIP_STAT_SIZE) == 0) {
	zip_error_set(error, ZIP_ER_SEEK, EOPNOTSUPP);
	return NULL;
    }
    len = st.size;

    /* treat empty files as empty archives */
    if (len == 0) {
	if ((za=_zip_allocate_new(src, flags, error)) == NULL) {
	    zip_source_free(src);
	    return NULL;
	}

	return za;
    }

    if ((za=_zip_allocate_new(src, flags, error)) == NULL) {
        return NULL;
    }

    if ((cdir = _zip_find_central_dir(za, len)) == NULL) {
        _zip_error_copy(error, &za->error);
	/* keep src so discard does not get rid of it */
	zip_source_keep(src);
	zip_discard(za);
	return NULL;
    }

    za->entry = cdir->entry;
    za->nentry = cdir->nentry;
    za->nentry_alloc = cdir->nentry_alloc;
    za->comment_orig = cdir->comment;

    free(cdir);

    _zip_hash_reserve_capacity(za->names, za->nentry, &za->error);
    
    for (idx = 0; idx < za->nentry; idx++) {
	const zip_uint8_t *name = _zip_string_get(za->entry[idx].orig->filename, NULL, 0, error);
	if (name == NULL) {
		/* keep src so discard does not get rid of it */
		zip_source_keep(src);
		zip_discard(za);
		return NULL;
	}

	if (_zip_hash_add(za->names, name, idx, ZIP_FL_UNCHANGED, &za->error) == false) {
	    if (za->error.zip_err != ZIP_ER_EXISTS || (flags & ZIP_CHECKCONS)) {
		_zip_error_copy(error, &za->error);
		/* keep src so discard does not get rid of it */
		zip_source_keep(src);
		zip_discard(za);
		return NULL;
	    }
	}
    }

    za->ch_flags = za->flags;

    return za;
}

示例#6

文件： zip_open.c 项目： QaDeS/droidsound

ZIP_EXTERN struct zip *
zip_open(const char *fn, int flags, int *zep)
{
	FILE *fp;
	struct zip *za;
	struct zip_cdir *cdir;
	int i;
	off_t len;

	switch (_zip_file_exists(fn, flags, zep)) {
	case -1:
		return NULL;
	case 0:
		return _zip_allocate_new(fn, zep);
	default:
		break;
	}

	if ((fp=fopen(fn, "rb")) == NULL) {
		set_error(zep, NULL, ZIP_ER_OPEN);
		return NULL;
	}

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "FILE OPENED");


	fseeko(fp, 0, SEEK_END);
	len = ftello(fp);

	/* treat empty files as empty archives */
	if (len == 0) {
		if ((za=_zip_allocate_new(fn, zep)) == NULL)
			fclose(fp);
		else
			za->zp = fp;
		return za;
	}

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "SCANNING");


	cdir = _zip_find_central_dir(fp, flags, zep, len);
	if (cdir == NULL) {
		fclose(fp);
		return NULL;
	}

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "DIR FOUND");


	if ((za=_zip_allocate_new(fn, zep)) == NULL) {
		_zip_cdir_free(cdir);
		fclose(fp);
		return NULL;
	}

	za->cdir = cdir;
	za->zp = fp;

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "ALLOCING ENTRIES");


	if ((za->entry=(struct zip_entry *)malloc(sizeof(*(za->entry))
											  * cdir->nentry)) == NULL) {
		set_error(zep, NULL, ZIP_ER_MEMORY);
		_zip_free(za);
		return NULL;
	}

	za->nentry_alloc = cdir->nentry;

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "FILLING ENTRIES");

	for (i=0; i<cdir->nentry; i++)
		_zip_entry_new2(za);

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "CHECK TORRENTZIP");

	_zip_check_torrentzip(za);
	za->ch_flags = za->flags;

	__android_log_print(ANDROID_LOG_VERBOSE, "ZIP", "DONE");

	return za;
}