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34e49164 C |
1 | (* sort a list of git codes such that the most recent comes first *) |
2 | ||
3 | let git_home = ref "/home/julia/linux-2.6" | |
4 | ||
5 | let unwind_protect f cleanup = | |
6 | try f () | |
7 | with e -> begin cleanup e; raise e end | |
8 | ||
9 | let (with_open_infile: string -> ((in_channel) -> 'a) -> 'a) = fun file f -> | |
10 | let chan = open_in file in | |
ae4735db | 11 | unwind_protect (fun () -> |
34e49164 C |
12 | let res = f chan in |
13 | close_in chan; | |
14 | res) | |
15 | (fun e -> close_in chan) | |
16 | ||
17 | (* ----------------------------------------------------------------------- *) | |
18 | ||
19 | let months = | |
20 | [("Jan",1);("Feb",2);("Mar",3);("Apr",4);("May",5);("Jun",6);("Jul",7); | |
21 | ("Aug",8);("Sep",9);("Oct",10);("Nov",11);("Dec",12)] | |
22 | ||
23 | let antimonths = | |
24 | [(1,31);(2,28);(3,31);(4,30);(5,31); (6,30);(7,31);(8,31);(9,30);(10,31); | |
25 | (11,30);(12,31);(0,31)] | |
26 | ||
27 | let normalize (year,month,day,hour,minute,second) = | |
28 | if hour < 0 | |
29 | then | |
30 | let (day,hour) = (day - 1,hour + 24) in | |
31 | if day = 0 | |
32 | then | |
33 | let month = month - 1 in | |
34 | let day = List.assoc month antimonths in | |
35 | let day = | |
36 | if month = 2 && year / 4 * 4 = year && not (year / 100 * 100 = year) | |
37 | then 29 | |
38 | else day in | |
39 | if month = 0 | |
40 | then (year-1,12,day,hour,minute,second) | |
41 | else (year,month,day,hour,minute,second) | |
42 | else (year,month,day,hour,minute,second) | |
43 | else (year,month,day,hour,minute,second) | |
44 | ||
45 | exception Fail of string | |
46 | ||
47 | let read_info code = | |
48 | let _ = | |
49 | Sys.command | |
50 | (Printf.sprintf | |
51 | "pushd %s >& /dev/null ; git log %s^..%s | grep Date: > /tmp/gitsort_info ; popd >& /dev/null" | |
52 | !git_home code code) in | |
53 | with_open_infile "/tmp/gitsort_info" (fun i -> | |
54 | let l = | |
55 | try input_line i | |
56 | with End_of_file -> raise (Fail "bad git file") in | |
57 | match Str.split (Str.regexp " ") l with | |
58 | [date;_;_;weekday;month;day;time;year;offset] -> | |
59 | let day = int_of_string day in | |
60 | let month = List.assoc month months in | |
61 | let year = int_of_string year in | |
62 | (match Str.split (Str.regexp ":") time with | |
63 | [hour;minute;second] -> | |
64 | let hour = int_of_string hour in | |
65 | let minute = int_of_string minute in | |
66 | let second = int_of_string second in | |
67 | let modifier = | |
68 | match String.get offset 0 with | |
69 | '-' -> -1 | |
70 | | '+' -> 1 | |
71 | | _ -> raise (Fail "bad offset") in | |
72 | (if not (String.sub offset 3 2 = "00") | |
73 | then raise (Fail "require 0 minutes difference")); | |
74 | let hour = | |
75 | hour + (modifier * (int_of_string (String.sub offset 1 2))) in | |
76 | normalize (year,month,day,hour,minute,second) | |
77 | | _ -> raise (Fail "bad date2")) | |
78 | | l -> raise (Fail ("bad date1: "^(String.concat "|" l)))) | |
79 | ||
80 | let rec get_dates = function | |
81 | [] -> [] | |
82 | | code::rest -> | |
83 | let date = | |
84 | try Some (read_info code) | |
85 | with | |
86 | Fail s -> Printf.printf "problem in %s: %s\n" code s; None | |
87 | | _ -> Printf.printf "problem in %s\n" code; None in | |
88 | match date with | |
89 | Some date -> (date,code)::(get_dates rest) | |
90 | | None -> get_dates rest | |
91 | ||
92 | let get_codes file = | |
93 | let gits = ref ([] : string list) in | |
94 | with_open_infile file (fun i -> | |
95 | let rec loop _ = | |
96 | let git = try Some (input_line i) with End_of_file -> None in | |
97 | match git with | |
98 | Some x -> gits := x :: !gits; loop() | |
99 | | None -> () in | |
100 | loop ()); | |
101 | List.concat | |
102 | (List.map | |
103 | (function l -> | |
104 | List.filter | |
105 | (* all because I don't know how to make a backslash regexp...*) | |
106 | (function x -> String.length x > 10) | |
107 | (Str.split (Str.regexp "[ \t]+") l)) | |
108 | !gits) | |
109 | ||
110 | let _ = | |
111 | let args = Array.to_list Sys.argv in | |
112 | let file = | |
113 | match args with | |
114 | [_;git_home_info;gits] -> git_home := git_home_info; gits | |
115 | | [_;gits] -> gits | |
116 | | _ -> failwith "args: [git home] git_codes_file" in | |
117 | let codes = get_codes file in | |
118 | let dates = get_dates codes in | |
119 | match List.sort compare dates with | |
120 | (_,last)::prev -> | |
121 | List.iter (function (_,x) -> Printf.printf "%s \\\n" x) (List.rev prev); | |
122 | Printf.printf "%s\n" last | |
123 | | _ -> () | |
124 | ||
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125 | |
126 |