[Libguestfs] [PATCH v4 6/9] builder: add a template parameter to get_index

get_index now gets a new template parameter. Setting it to true will make the index parsing less picky about missing important data. This can be used to parse a partial index file. --- builder/builder.ml | 2 +- builder/index_parser.ml | 20 ++++++++++++++------ builder/index_parser.mli | 2 +- 3 files changed, 16 insertions(+), 8 deletions(-) diff --git a/builder/builder.ml b/builder/builder.ml index e59c763b2..5802b6873 100644 --- a/builder/builder.ml +++ b/builder/builder.ml @@ -209,7 +209,7 @@ let main () = ~tmpdir in match source.Sources.format with | Sources.FormatNative -> - Index_parser.get_index ~downloader ~sigchecker source + Index_parser.get_index ~downloader ~sigchecker ~template:false source | Sources.FormatSimpleStreams -> Simplestreams_parser.get_index ~downloader ~sigchecker source ) sources diff --git a/builder/index_parser.ml b/builder/index_parser.ml index 9b3daed24..3869123ed 100644 --- a/builder/index_parser.ml +++ b/builder/index_parser.ml @@ -24,7 +24,7 @@ open Utils open Printf open Unix -let get_index ~downloader ~sigchecker +let get_index ~downloader ~sigchecker ~template { Sources.uri = uri; proxy = proxy } = let corrupt_file () = error (f_"The index file downloaded from '%s' is corrupt.\nYou need to ask the supplier of this file to fix it and upload a fixed version.") uri @@ -112,7 +112,7 @@ let get_index ~downloader ~sigchecker let revision = try Rev_int (int_of_string (List.assoc ("revision", None) fields)) with - | Not_found -> Rev_int 1 + | Not_found -> if template then Rev_int 0 else Rev_int 1 | Failure _ -> eprintf (f_"%s: cannot parse 'revision' field for '%s'\n") prog n; corrupt_file () in @@ -122,11 +122,19 @@ let get_index ~downloader ~sigchecker try Int64.of_string (List.assoc ("size", None) fields) with | Not_found -> - eprintf (f_"%s: no 'size' field for '%s'\n") prog n; - corrupt_file () + if template then + Int64.zero + else ( + eprintf (f_"%s: no 'size' field for '%s'\n") prog n; + corrupt_file () + ) | Failure _ -> - eprintf (f_"%s: cannot parse 'size' field for '%s'\n") prog n; - corrupt_file () in + if template then + Int64.zero + else ( + eprintf (f_"%s: cannot parse 'size' field for '%s'\n") prog n; + corrupt_file () + ) in let compressed_size = try Some (Int64.of_string (List.assoc ("compressed_size", None) fields)) with diff --git a/builder/index_parser.mli b/builder/index_parser.mli index 7c1c423ad..ae757ad6f 100644 --- a/builder/index_parser.mli +++ b/builder/index_parser.mli @@ -16,7 +16,7 @@ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *) -val get_index : downloader:Downloader.t -> sigchecker:Sigchecker.t -> Sources.source -> Index.index +val get_index : downloader:Downloader.t -> sigchecker:Sigchecker.t -> template:bool -> Sources.source -> Index.index (** [get_index download sigchecker source] will parse the source index file into an index entry list. *) -- 2.11.0