Module Build_path_prefix_map

Rewrite paths for reproducible builds

Warning: this module is unstable and part of compiler-libs.

See the BUILD_PATH_PREFIX_MAP spec

type path = string
type path_prefix = string
type error_message = string
val encode_prefix : path_prefix -> string
val decode_prefix : string -> (path_prefix, error_message) result
type pair = {
  1. target : path_prefix;
  2. source : path_prefix;
}
val encode_pair : pair -> string
val decode_pair : string -> (pair, error_message) result
type map = pair option list
val encode_map : map -> string
val decode_map : string -> (map, error_message) result
val rewrite_first : map -> path -> path option

rewrite_first map path tries to find a source in map that is a prefix of the input path. If it succeeds, it replaces this prefix with the corresponding target. If it fails, it just returns None.

val rewrite_all : map -> path -> path list

rewrite_all map path finds all sources in map that are a prefix of the input path. For each matching source, in priority order, it replaces this prefix with the corresponding target and adds the result to the returned list. If there are no matches, it just returns [].

val rewrite : map -> path -> path

rewrite path uses rewrite_first to try to find a mapping for path. If found, it returns that, otherwise it just returns path.

val invert_all : map -> path -> path list

invert_all map path finds all targets in map that are a prefix of the input path. For each matching target, in priority order, it replaces this prefix with the corresponding source and adds the result to the returned list. If there are no matches, it just returns [].