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[Libguestfs] [PATCH] Added --use-installed switch (which for now only works for Debian).



---
 src/febootstrap.ml                   |    4 ++--
 src/febootstrap_cmdline.ml           |    4 ++++
 src/febootstrap_cmdline.mli          |    3 +++
 src/febootstrap_debian.ml            |    8 ++++----
 src/febootstrap_package_handlers.ml  |    4 ++--
 src/febootstrap_package_handlers.mli |    4 ++--
 src/febootstrap_pacman.ml            |    6 ++++--
 src/febootstrap_yum_rpm.ml           |    5 +++--
 8 files changed, 24 insertions(+), 14 deletions(-)

diff --git a/src/febootstrap.ml b/src/febootstrap.ml
index 7e48206..9b7dc88 100644
--- a/src/febootstrap.ml
+++ b/src/febootstrap.ml
@@ -67,7 +67,7 @@ let () =
     List.flatten (
       List.map (
         fun pkg ->
-          let files = ph.ph_list_files pkg in
+          let files = (ph.ph_list_files ~use_installed:use_installed pkg) in
           List.map (fun (filename, ft) -> filename, ft, pkg) files
       ) packages
     ) in
@@ -320,7 +320,7 @@ let () =
        * original file from the package.
        *)
       else if config then (
-        let outfile = ph.ph_get_file_from_package pkg path in
+        let outfile = ph.ph_get_file_from_package ~use_installed:use_installed pkg path in
 
         (* Note that the output config file might not be a regular file. *)
         let statbuf = lstat outfile in
diff --git a/src/febootstrap_cmdline.ml b/src/febootstrap_cmdline.ml
index 667e297..939afb7 100644
--- a/src/febootstrap_cmdline.ml
+++ b/src/febootstrap_cmdline.ml
@@ -23,6 +23,7 @@ let names_mode = ref false
 let outputdir = ref "."
 let packages = ref []
 let save_temps = ref false
+let use_installed = ref false
 let verbose = ref false
 let warnings = ref true
 let yum_config = ref None
@@ -50,6 +51,8 @@ let argspec = Arg.align [
     " Don't delete temporary files and directories on exit.";
   "--save-temps", Arg.Set save_temps,
     " Don't delete temporary files and directories on exit.";
+  "--use-installed", Arg.Set use_installed,
+    " Inspect installed packages for determining contents.";
   "-v", Arg.Set verbose,
     " Enable verbose output";
   "--verbose", Arg.Set verbose,
@@ -89,6 +92,7 @@ let names_mode = !names_mode
 let outputdir = !outputdir
 let packages = List.rev !packages
 let save_temps = !save_temps
+let use_installed = !use_installed
 let verbose = !verbose
 let warnings = !warnings
 let yum_config = !yum_config
diff --git a/src/febootstrap_cmdline.mli b/src/febootstrap_cmdline.mli
index d948d80..a545012 100644
--- a/src/febootstrap_cmdline.mli
+++ b/src/febootstrap_cmdline.mli
@@ -38,6 +38,9 @@ val packages : string list
 val save_temps : bool
   (** True if [--save-temps] was given on the command line. *)
 
+val use_installed : bool
+  (** True if [--use-installed] was given on the command line *)
+
 val verbose : bool
   (** True if [--verbose] was given on the command line.
       See also {!debug}. *)
diff --git a/src/febootstrap_debian.ml b/src/febootstrap_debian.ml
index bb10f15..7482ed4 100644
--- a/src/febootstrap_debian.ml
+++ b/src/febootstrap_debian.ml
@@ -181,15 +181,15 @@ let debian_list_files_installed pkg =
   ) lines in
   files
 
-let debian_list_files pkg =
-  if List.exists ((=) pkg) installed_pkgs then
+let debian_list_files ?(use_installed=false) pkg =
+  if use_installed && List.exists ((=) pkg) installed_pkgs then
     debian_list_files_installed pkg
   else
     debian_list_files_downloaded pkg
 
 (* Easy because we already unpacked the archive above. *)
-let debian_get_file_from_package pkg file =
-  if List.exists (fun p -> p = pkg) installed_pkgs then
+let debian_get_file_from_package ?(use_installed=false) pkg file =
+  if use_installed && List.exists (fun p -> p = pkg) installed_pkgs then
     file
   else
     tmpdir // pkg ^ ".d" // file
diff --git a/src/febootstrap_package_handlers.ml b/src/febootstrap_package_handlers.ml
index ad3a233..f627d2f 100644
--- a/src/febootstrap_package_handlers.ml
+++ b/src/febootstrap_package_handlers.ml
@@ -25,8 +25,8 @@ open Febootstrap_cmdline
 type package_handler = {
   ph_detect : unit -> bool;
   ph_resolve_dependencies_and_download : string list -> string list;
-  ph_list_files : string -> (string * file_type) list;
-  ph_get_file_from_package : string -> string -> string
+  ph_list_files : ?use_installed:bool -> string -> (string * file_type) list;
+  ph_get_file_from_package : ?use_installed:bool -> string -> string -> string
 }
 and file_type = {
   ft_dir : bool;
diff --git a/src/febootstrap_package_handlers.mli b/src/febootstrap_package_handlers.mli
index c28d81f..ebf0386 100644
--- a/src/febootstrap_package_handlers.mli
+++ b/src/febootstrap_package_handlers.mli
@@ -31,11 +31,11 @@ type package_handler = {
 
       Note this should also process the [excludes] list. *)
 
-  ph_list_files : string -> (string * file_type) list;
+  ph_list_files : ?use_installed:bool -> string -> (string * file_type) list;
   (** [ph_list_files pkg] lists the files and file metadata in the
       package called [pkg] (a package file). *)
 
-  ph_get_file_from_package : string -> string -> string;
+  ph_get_file_from_package : ?use_installed:bool -> string -> string -> string;
   (** [ph_get_file_from_package pkg file] extracts the
       single named file [file] from [pkg].  The path of the
       extracted file is returned. *)
diff --git a/src/febootstrap_pacman.ml b/src/febootstrap_pacman.ml
index 6691ebe..002ea6d 100644
--- a/src/febootstrap_pacman.ml
+++ b/src/febootstrap_pacman.ml
@@ -71,7 +71,8 @@ let pacman_resolve_dependencies_and_download names =
 
   List.sort compare pkgs
 
-let pacman_list_files pkg =
+(* fixme: use_installed *)
+let pacman_list_files ?(use_installed=false) pkg =
   debug "unpacking %s ..." pkg;
 
   (* We actually need to extract the file in order to get the
@@ -117,7 +118,8 @@ let pacman_list_files pkg =
   files
 
 (* Easy because we already unpacked the archive above. *)
-let pacman_get_file_from_package pkg file =
+(* fixme: use_installed *)
+let pacman_get_file_from_package ?(use_installed=false) pkg file =
   tmpdir // pkg ^ ".d" // file
 
 let () =
diff --git a/src/febootstrap_yum_rpm.ml b/src/febootstrap_yum_rpm.ml
index 028492a..d208e8e 100644
--- a/src/febootstrap_yum_rpm.ml
+++ b/src/febootstrap_yum_rpm.ml
@@ -172,7 +172,7 @@ if verbose:
       sprintf "%s/%s-%s-%s.%s.rpm" tmpdir name version release arch
   ) pkgs
 
-let rec yum_rpm_list_files pkg =
+let rec yum_rpm_list_files ?(use_installed=false) pkg =
   (* Run rpm -qlp with some extra magic. *)
   let cmd =
     sprintf "rpm -q --qf '[%%{FILENAMES} %%{FILEFLAGS:fflags} %%{FILEMODES} %%{FILESIZES}\\n]' -p %s"
@@ -228,7 +228,8 @@ let rec yum_rpm_list_files pkg =
 
   files
 
-let yum_rpm_get_file_from_package pkg file =
+(* fixme use_installed *)
+let yum_rpm_get_file_from_package ?(use_installed=false) pkg file =
   debug "extracting %s from %s ..." file (Filename.basename pkg);
 
   let outfile = tmpdir // file in
-- 
1.7.6.3


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