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open Util
(** {1 Helper functions} *)
let parse_env_line l =
try Scanf.sscanf l "%[^=]=%S" (fun name value -> Some(name,value))
with _ -> None
let with_ic file f =
let ic = open_in file in
try
let rc = f ic in
close_in ic;
rc
with e -> close_in ic; raise e
let getenv_from_file name =
let base = Filename.dirname Sys.executable_name in
try
with_ic (base ^ "/coq_environment.txt") (fun ic ->
let rec find () =
let l = input_line ic in
match parse_env_line l with
| Some(n,v) when n = name -> v
| _ -> find ()
in
find ())
with
| Sys_error s -> raise Not_found
| End_of_file -> raise Not_found
let system_getenv name =
try Sys.getenv name with Not_found -> getenv_from_file name
let getenv_else s dft = try system_getenv s with Not_found -> dft ()
let safe_getenv warning n =
getenv_else n (fun () ->
warning ("Environment variable "^n^" not found: using '$"^n^"' .");
("$"^n)
)
let ( / ) a b =
if Filename.is_relative b then a ^ "/" ^ b else b
let coqify d = d / "coq"
let home ~warn =
getenv_else "HOME" (fun () ->
try (Sys.getenv "HOMEDRIVE")^(Sys.getenv "HOMEPATH") with Not_found ->
getenv_else "USERPROFILE" (fun () ->
warn ("Cannot determine user home directory, using '.' .");
Filename.current_dir_name))
let path_to_list p =
let sep = if String.equal Sys.os_type "Win32" then ';' else ':' in
String.split_on_char sep p
let expand_path_macros ~warn s =
let rec expand_atom s i =
let l = String.length s in
if i<l && (Util.is_digit s.[i] || Util.is_letter s.[i] || s.[i] == '_')
then expand_atom s (i+1)
else i in
let rec expand_macros s i =
let l = String.length s in
if Int.equal i l then s else
match s.[i] with
| '$' ->
let n = expand_atom s (i+1) in
let v = safe_getenv warn (String.sub s (i+1) (n-i-1)) in
let s = (String.sub s 0 i)^v^(String.sub s n (l-n)) in
expand_macros s (i + String.length v)
| '~' when Int.equal i 0 ->
let n = expand_atom s (i+1) in
let v =
if Int.equal n (i + 1) then home ~warn
else (Unix.getpwnam (String.sub s (i+1) (n-i-1))).Unix.pw_dir
in
let s = v^(String.sub s n (l-n)) in
expand_macros s (String.length v)
| c -> expand_macros s (i+1)
in expand_macros s 0
(** {1 Paths} *)
(** {2 Coq paths} *)
let coqbin =
CUnix.canonical_path_name (Filename.dirname Sys.executable_name)
(** The following only makes sense when executables are running from
source tree (e.g. during build or in local mode). *)
let coqroot =
Filename.dirname coqbin
(** On win32, we add coqbin to the PATH at launch-time (this used to be
done in a .bat script). *)
let _ =
if Coq_config.arch_is_win32 then
Unix.putenv "PATH" (coqbin ^ ";" ^ getenv_else "PATH" (fun () -> ""))
(** Add a local installation suffix (unless the suffix is itself
absolute in which case the prefix does not matter) *)
let use_suffix prefix suffix =
if String.length suffix > 0 && suffix.[0] = '/' then suffix else prefix / suffix
let docdir () =
let path = use_suffix coqroot Coq_config.docdirsuffix in
if Sys.file_exists path then path else Coq_config.docdir
let datadir () =
let path = use_suffix coqroot Coq_config.datadirsuffix in
if Sys.file_exists path then path else Coq_config.datadir
let configdir () =
let path = use_suffix coqroot Coq_config.configdirsuffix in
if Sys.file_exists path then path else Coq_config.configdir
let coqpath =
let coqpath = getenv_else "COQPATH" (fun () -> "") in
let make_search_path path =
let paths = path_to_list path in
let valid_paths = List.filter Sys.file_exists paths in
List.rev valid_paths
in
make_search_path coqpath
(** {2 Caml paths} *)
let ocamlfind () = getenv_else "OCAMLFIND" (fun () -> Coq_config.ocamlfind)
(** {1 XDG utilities} *)
let xdg_data_home warn =
coqify
(getenv_else "XDG_DATA_HOME" (fun () -> (home ~warn) / ".local/share"))
let xdg_config_home warn =
coqify
(getenv_else "XDG_CONFIG_HOME" (fun () -> (home ~warn) / ".config"))
let xdg_data_dirs warn =
let sys_dirs =
try
List.map coqify (path_to_list (Sys.getenv "XDG_DATA_DIRS"))
with
| Not_found -> [datadir ()]
in
xdg_data_home warn :: sys_dirs
let xdg_dirs ~warn =
List.filter Sys.file_exists (xdg_data_dirs warn)
let print_config ?(prefix_var_name="") f =
let env = Boot.Env.init () in
let coqlib = Boot.Env.coqlib env |> Boot.Path.to_string in
let corelib = Boot.Env.corelib env |> Boot.Path.to_string in
let open Printf in
fprintf f "%sCOQLIB=%s/\n" prefix_var_name coqlib;
fprintf f "%sCOQCORELIB=%s/\n" prefix_var_name corelib;
fprintf f "%sDOCDIR=%s/\n" prefix_var_name (docdir ());
fprintf f "%sOCAMLFIND=%s\n" prefix_var_name (ocamlfind ());
fprintf f "%sCAMLFLAGS=%s\n" prefix_var_name Coq_config.caml_flags;
fprintf f "%sWARN=%s\n" prefix_var_name "-warn-error +a-3";
fprintf f "%sHASNATDYNLINK=%s\n" prefix_var_name
(if Coq_config.has_natdynlink then "true" else "false");
fprintf f "%sCOQ_SRC_SUBDIRS=%s\n" prefix_var_name (String.concat " " Coq_config.all_src_dirs);
fprintf f "%sCOQ_NATIVE_COMPILER_DEFAULT=%s\n" prefix_var_name
(match Coq_config.native_compiler with
| Coq_config.NativeOn {ondemand=false} -> "yes"
| Coq_config.NativeOff -> "no"
| Coq_config.NativeOn {ondemand=true} -> "ondemand")