2 * Copyright (C) 2019 Richard W.M. Jones
3 * Copyright (C) 2019 Red Hat Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 let failwithf fs = ksprintf failwith fs
24 let (//) = Filename.concat
25 let is_directory d = try Sys.is_directory d with Sys_error _ -> false
27 (* From OCaml 4.08 sources. We can remove this when we can
28 * depend on min OCaml 4.08.
31 let rec aux accu = function
36 | Some v -> aux (v :: accu) l
41 (* From libguestfs sources. *)
42 let rec string_find s sub =
43 let len = String.length s in
44 let sublen = String.length sub in
46 if i <= len-sublen then (
49 if s.[i+j] = sub.[j] then loop2 (j+1)
55 if r = -1 then loop (i+1) else r
61 let rec split sep str =
62 let len = String.length sep in
63 let seplen = String.length str in
64 let i = string_find str sep in
65 if i = -1 then str, ""
67 String.sub str 0 i, String.sub str (i + len) (seplen - i - len)
70 and nsplit ?(max = 0) sep str =
72 invalid_arg "String.nsplit: max parameter should not be negative";
74 (* If we reached the limit, OR if the pattern does not match the string
75 * at all, return the rest of the string as a single element list.
77 if max = 1 || string_find str sep = -1 then
80 let s1, s2 = split sep str in
81 let max = if max = 0 then 0 else max - 1 in
82 s1 :: nsplit ~max sep s2
87 (* || c = '\f' *) || c = '\n' || c = '\r' || c = '\t' (* || c = '\v' *)
89 let triml ?(test = isspace) str =
91 let n = ref (String.length str) in
92 while !n > 0 && test str.[!i]; do
97 else String.sub str !i !n
99 let trimr ?(test = isspace) str =
100 let n = ref (String.length str) in
101 while !n > 0 && test str.[!n-1]; do
104 if !n = String.length str then str
105 else String.sub str 0 !n
107 let trim ?(test = isspace) str =
108 trimr ~test (triml ~test str)
110 let absolute_path path =
111 if not (Filename.is_relative path) then path else Sys.getcwd () // path