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|
%-----------------------------------------------------------------------------%
% Copyright (C) 1998 The University of Melbourne.
% This file may only be copied under the terms of the GNU General
% Public License - see the file COPYING in the Mercury distribution.
%-----------------------------------------------------------------------------%
% Main author: bromage
% This module contains all the option handling code for diff.
%-----------------------------------------------------------------------------%
:- module options.
:- interface.
:- import_module string, std_util, io, getopt.
%-----------------------------------------------------------------------------%
:- pred options__get_option_ops(option_ops(option) :: out(option_ops)) is det.
% Process the option table, perhaps returning an error message
% if there was some inconsistentcy or other error.
:- pred postprocess_options(maybe_option_table :: in, maybe(string) :: out,
io__state::di, io__state::uo) is det.
%-----------------------------------------------------------------------------%
% Info on the accepted options, displayed in response to --help.
:- pred options_help(io__state::di, io__state::uo) is det.
%-----------------------------------------------------------------------------%
:- type option_table == option_table(option).
:- type maybe_option_table == maybe_option_table(option).
% The master list of options.
:- type option --->
% Output styles
help
; version
; context
; context_style_output
; unified
; unified_style_output
; ed
; forward_ed
; rcs
; brief
; ifdef
; side_by_side
; cvs_merge_conflict
% Output options
; show_c_function % Not handled (and unlikely to be soon)
; show_function_line % Not handled (and unlikely to be soon)
; label
; width
; expand_tabs
; initial_tab
; paginate % Not handled (and unlikely to be soon)
; left_column
; suppress_common_lines
; sdiff_merge_assist % Accepted but ignored
% Matching options
; new_file % Not handled (and unlikely to be soon)
; unidirectional_new_file % Not handled (and unlikely to be soon)
; ignore_case
; ignore_all_space
; ignore_space_change
% Diff options
; minimal
; speed_large_files % Accepted but ignored
; file_split_speed_hack % Accepted but ignored (GNU diff
% ignores this too, so let's not
% feel too bad about it)
% Change filter options
; ignore_matching_lines % Not handled (and unlikely to be soon)
; ignore_blank_lines
% Directory comparison options
% None of these are likely to be handled in the near future.
; starting_file % Not handled
; recursive % Not handled
; report_identical_files % Not handled
; exclude % Not handled
; exclude_from % Not handled
% #ifdef format options
% None of these are likely to be handled in the very near future.
; old_line_format % Not handled
; new_line_format % Not handled
; unchanged_line_format % Not handled
; line_format % Not handled
; old_group_format % Not handled
; new_group_format % Not handled
; unchanged_group_format % Not handled
; changed_group_format % Not handled
; horizon_lines % Not handled
% File input options
% Neither of these are likely to be handled in the near future.
; text % Not handled
; binary. % Not handled
%-----------------------------------------------------------------------------%
%-----------------------------------------------------------------------------%
:- implementation.
:- import_module globals, diff_out.
:- import_module list, int, bool, string, map, require.
:- pred long_option(string::in, option::out) is semidet.
long_option("ignore-blank-lines", ignore_blank_lines).
long_option("context", context).
long_option("ifdef", ifdef).
long_option("show-function-line", show_function_line).
long_option("speed-large-files", speed_large_files).
long_option("ignore-matching-lines", ignore_matching_lines).
long_option("file-label", label).
long_option("label", label).
long_option("new-file", new_file).
long_option("entire-new-file", new_file).
long_option("unidirectional-new-file", unidirectional_new_file).
long_option("starting-file", starting_file).
long_option("initial-tab", initial_tab).
long_option("unified", unified).
long_option("width", width).
long_option("exclude-from", exclude_from).
long_option("text", text).
long_option("ascii", text).
long_option("ignore-space-change", ignore_space_change).
long_option("minimal", minimal).
long_option("ed", ed).
long_option("forward-ed", forward_ed).
long_option("ignore-case", ignore_case).
long_option("paginate", paginate).
long_option("print", paginate).
long_option("rcs", rcs).
long_option("show-c-function", show_c_function).
long_option("brief", brief).
long_option("recursive", recursive).
long_option("report-identical-files", report_identical_files).
long_option("expand-tabs", expand_tabs).
long_option("version", version).
long_option("ignore-all-space", ignore_all_space).
long_option("exclude", exclude).
long_option("side-by-side", side_by_side).
long_option("cvs-merge-conflict", cvs_merge_conflict).
long_option("left-column", left_column).
long_option("suppress-common-lines", suppress_common_lines).
long_option("sdiff-merge-assist", sdiff_merge_assist).
long_option("old-line-format", old_line_format).
long_option("new-line-format", new_line_format).
long_option("unchanged-line-format", unchanged_line_format).
long_option("line-format", line_format).
long_option("old-group-format", old_group_format).
long_option("new-group-format", new_group_format).
long_option("unchanged-group-format", unchanged_group_format).
long_option("changed-group-format", changed_group_format).
long_option("horizon-lines", horizon_lines).
long_option("help", help).
long_option("binary", binary).
%-----------------------------------------------------------------------------%
:- pred short_option(character::in, option::out) is semidet.
short_option('B', ignore_blank_lines).
short_option('C', context).
short_option('D', ifdef).
short_option('F', show_function_line).
short_option('H', speed_large_files).
short_option('I', ignore_matching_lines).
short_option('L', label).
short_option('N', new_file).
short_option('P', unidirectional_new_file).
short_option('S', starting_file).
short_option('T', initial_tab).
short_option('U', unified).
short_option('W', width).
short_option('X', exclude_from).
short_option('a', text).
short_option('b', ignore_space_change).
short_option('c', context_style_output).
short_option('d', minimal).
short_option('e', ed).
short_option('f', forward_ed).
short_option('h', file_split_speed_hack).
short_option('i', ignore_case).
short_option('l', paginate).
short_option('n', rcs).
short_option('p', show_c_function).
short_option('q', brief).
short_option('r', recursive).
short_option('s', report_identical_files).
short_option('t', expand_tabs).
short_option('u', unified_style_output).
short_option('v', version).
short_option('w', ignore_all_space).
short_option('x', exclude).
short_option('y', side_by_side).
%-----------------------------------------------------------------------------%
:- pred option_defaults(option :: out, option_data :: out) is nondet.
% Output styles
option_defaults(help, bool(no)).
option_defaults(version, bool(no)).
option_defaults(context, maybe_int(no)).
option_defaults(context_style_output, bool_special).
option_defaults(unified, maybe_int(no)).
option_defaults(unified_style_output, bool_special).
option_defaults(ed, bool(no)).
option_defaults(forward_ed, bool(no)).
option_defaults(rcs, bool(no)).
option_defaults(brief, bool(no)).
option_defaults(ifdef, maybe_string(no)).
option_defaults(side_by_side, bool(no)).
option_defaults(cvs_merge_conflict, bool(no)).
% Output options
option_defaults(show_c_function, bool_special).
option_defaults(show_function_line, string_special).
option_defaults(label, accumulating([])).
option_defaults(width, int(130)).
option_defaults(expand_tabs, bool(no)).
option_defaults(initial_tab, bool(no)).
option_defaults(paginate, bool_special).
option_defaults(left_column, bool(no)).
option_defaults(suppress_common_lines, bool(no)).
option_defaults(sdiff_merge_assist, bool(no)).
% Matching options
option_defaults(new_file, bool_special).
option_defaults(unidirectional_new_file, bool_special).
option_defaults(ignore_case, bool(no)).
option_defaults(ignore_all_space, bool(no)).
option_defaults(ignore_space_change, bool(no)).
% Diff options
option_defaults(minimal, bool(no)).
option_defaults(speed_large_files, bool(no)).
option_defaults(file_split_speed_hack, bool(no)).
% Change filter options
option_defaults(ignore_matching_lines, string_special).
option_defaults(ignore_blank_lines, bool(no)).
% Directory comparison options (none of these are handled)
option_defaults(starting_file, string_special).
option_defaults(recursive, bool_special).
option_defaults(report_identical_files, bool_special).
option_defaults(exclude, string_special).
option_defaults(exclude_from, string_special).
% Format options (none of these are handled)
option_defaults(old_line_format, string_special).
option_defaults(new_line_format, string_special).
option_defaults(unchanged_line_format, string_special).
option_defaults(line_format, string_special).
option_defaults(old_group_format, string_special).
option_defaults(new_group_format, string_special).
option_defaults(unchanged_group_format, string_special).
option_defaults(changed_group_format, string_special).
option_defaults(horizon_lines, int_special).
% File input options (none of these are handled)
option_defaults(text, bool_special).
option_defaults(binary, bool_special).
%-----------------------------------------------------------------------------%
:- pred special_handler(option :: in, special_data :: in, option_table :: in,
maybe_option_table :: out) is semidet.
special_handler(context_style_output, bool(yes), Options0, ok(Options)) :-
map__lookup(Options0, context, maybe_int(Context0)),
( Context0 = no,
Context = yes(3)
; Context0 = yes(C),
Context = yes(C)
),
map__set(Options0, context, maybe_int(Context), Options).
special_handler(unified_style_output, bool(yes), Options0, ok(Options)) :-
map__lookup(Options0, unified, maybe_int(Unified0)),
( Unified0 = no,
Unified = yes(3)
; Unified0 = yes(C),
Unified = yes(C)
),
map__set(Options0, unified, maybe_int(Unified), Options).
% Special handlers for unhandled options
special_handler(show_c_function, _, _, error(Msg)) :-
Msg = "Option not handled: --show-c-function".
special_handler(show_function_line, _, _, error(Msg)) :-
Msg = "Option not handled: --show-function-line".
special_handler(paginate, _, _, error(Msg)) :-
Msg = "Option not handled: --paginate".
special_handler(sdiff_merge_assist, _, _, error(Msg)) :-
Msg = "Option not handled: --sdiff-merge-assist".
special_handler(new_file, _, _, error(Msg)) :-
Msg = "Option not handled: --new-file".
special_handler(unidirectional_new_file, _, _, error(Msg)) :-
Msg = "Option not handled: --unidirectional-new-file".
special_handler(speed_large_files, _, _, error(Msg)) :-
Msg = "Option not handled: --speed-large-files".
special_handler(ignore_matching_lines, _, _, error(Msg)) :-
Msg = "Option not handled: --ignore-matching-lines".
special_handler(ignore_blank_lines, _, _, error(Msg)) :-
Msg = "Option not handled: --ignore-blank-lines".
special_handler(starting_file, _, _, error(Msg)) :-
Msg = "Option not handled: --starting-file".
special_handler(recursive, _, _, error(Msg)) :-
Msg = "Option not handled: --recursive".
special_handler(report_identical_files, _, _, error(Msg)) :-
Msg = "Option not handled: --report-identical-files".
special_handler(exclude, _, _, error(Msg)) :-
Msg = "Option not handled: --exclude".
special_handler(exclude_from, _, _, error(Msg)) :-
Msg = "Option not handled: --exclude-from".
special_handler(old_line_format, _, _, error(Msg)) :-
Msg = "Option not handled: --old-line-format".
special_handler(new_line_format, _, _, error(Msg)) :-
Msg = "Option not handled: --new-line-format".
special_handler(unchanged_line_format, _, _, error(Msg)) :-
Msg = "Option not handled: --unchangedline-format".
special_handler(line_format, _, _, error(Msg)) :-
Msg = "Option not handled: --line-format".
special_handler(old_group_format, _, _, error(Msg)) :-
Msg = "Option not handled: --old-group-format".
special_handler(new_group_format, _, _, error(Msg)) :-
Msg = "Option not handled: --new-group-format".
special_handler(unchanged_group_format, _, _, error(Msg)) :-
Msg = "Option not handled: --unchanged-group-format".
special_handler(changed_group_format, _, _, error(Msg)) :-
Msg = "Option not handled: --changed-group-format".
special_handler(horizon_lines, _, _, error(Msg)) :-
Msg = "Option not handled: --horizon-lines".
special_handler(text, _, _, error(Msg)) :-
Msg = "Option not handled: --text".
special_handler(binary, _, _, error(Msg)) :-
Msg = "Option not handled: --binary".
%-----------------------------------------------------------------------------%
options__get_option_ops(OptionOps) :-
OptionOps = option_ops(
short_option,
long_option,
option_defaults,
special_handler
).
%-----------------------------------------------------------------------------%
% Postprocess the options
postprocess_options(ok(OptionTable0), Result) -->
( { postprocess_output_style(OptionTable0, OutputStyle) } ->
globals__io_init(OptionTable0),
globals__io_set_output_style(OutputStyle),
{ Result = no }
;
{ Result = yes("Can't set more than one output style.") }
).
postprocess_options(error(Msg), yes(Msg)) --> [].
% Determine which output style to use from the provided
% options.
:- pred postprocess_output_style(option_table :: in,
diff_out__output_style :: out) is semidet.
postprocess_output_style(OptionTable, Style) :-
(
map__search(OptionTable, help, bool(UseHelp)),
map__search(OptionTable, version, bool(UseVersion)),
map__search(OptionTable, context, maybe_int(UseContext)),
map__search(OptionTable, unified, maybe_int(UseUnified)),
map__search(OptionTable, ed, bool(UseEd)),
map__search(OptionTable, forward_ed, bool(UseForwardEd)),
map__search(OptionTable, rcs, bool(UseRCS)),
map__search(OptionTable, brief, bool(UseBrief)),
map__search(OptionTable, ifdef, maybe_string(UseIfdef)),
map__search(OptionTable, side_by_side, bool(UseSideBySide)),
map__search(OptionTable, cvs_merge_conflict, bool(CVS))
->
postprocess_output_style_2(UseHelp, UseVersion, UseContext,
UseUnified, UseEd, UseForwardEd, UseRCS, UseBrief,
UseIfdef, UseSideBySide, CVS,
Style)
;
error("postprocess_output_style")
).
:- pred postprocess_output_style_2(bool, bool, maybe(int), maybe(int), bool,
bool, bool, bool, maybe(string), bool, bool,
diff_out__output_style).
:- mode postprocess_output_style_2(in, in, in, in, in, in, in, in, in, in, in,
out) is semidet.
postprocess_output_style_2(no, no, no, no, no, no, no, no, no, no, no,
normal).
postprocess_output_style_2(yes, no, no, no, no, no, no, no, no, no, no,
help_only).
postprocess_output_style_2(no, yes, no, no, no, no, no, no, no, no, no,
version_only).
postprocess_output_style_2(no, no, yes(C), no, no, no, no, no, no, no, no,
context(C)).
postprocess_output_style_2(no, no, no, yes(U), no, no, no, no, no, no, no,
unified(U)).
postprocess_output_style_2(no, no, no, no, yes, no, no, no, no, no, no,
ed).
postprocess_output_style_2(no, no, no, no, no, yes, no, no, no, no, no,
forward_ed).
postprocess_output_style_2(no, no, no, no, no, no, yes, no, no, no, no,
rcs).
postprocess_output_style_2(no, no, no, no, no, no, no, yes, no, no, no,
brief).
postprocess_output_style_2(no, no, no, no, no, no, no, no, yes(Sym), no, no,
ifdef(Sym)).
postprocess_output_style_2(no, no, no, no, no, no, no, no, no, yes, no,
side_by_side).
postprocess_output_style_2(no, no, no, no, no, no, no, no, no, no, yes,
cvs_merge_conflict).
%-----------------------------------------------------------------------------%
% Help text for the options.
options_help -->
io__write_string("Output styles:\n"),
io__write_string("\t--help\n"),
io__write_string("\t\tOutput this help.\n"),
io__write_string("\t-v, --version\n"),
io__write_string("\t\tOutput version info.\n"),
io__write_string("\t-c, -C <num>, --context <num>\n"),
io__write_string("\t\tOutput <num> (default 2) lines of copied context.\n"),
io__write_string("\t-u, -U <num>, --unified <num>\n"),
io__write_string("\t\tOutput <num> (default 2) lines of unified context.\n"),
io__write_string("\t\t-L <label>, --label <label> Use <label> instead of file name.\n"),
io__write_string("\t-e, --ed\n"),
io__write_string("\t\tOutput an ed script.\n"),
io__write_string("\t-f, --forward-ed\n"),
io__write_string("\t\tProduce output similar to --ed, not useful to ed(1),\n"),
io__write_string("\t\tand in the opposite order.\n"),
io__write_string("\t-n, --rcs\n"),
io__write_string("\t\tOutput an RCS format diff.\n"),
io__write_string("\t-q, --brief\n"),
io__write_string("\t\tOutput only whether or not files differ.\n"),
io__write_string("\t-D <name>, --ifdef <name>\n"),
io__write_string("\t\tProduce output in #ifdef <name> format.\n"),
io__write_string("\t-y, --side-by-side\n"),
io__write_string("\t\tProduce output in side-by-side format.\n"),
io__write_string("\t\t-w <num>, --width <num> Output at most <num> (default 130)\n"),
io__write_string("\t\t\tcharacters per line.\n"),
io__write_string("\t\t--left-column Output only the left column of common lines.\n"),
io__write_string("\t\t--suppress-common-lines Do not output common lines.\n"),
io__write_string("\nMatching options:\n"),
io__write_string("\t-d, --minimal\n"),
io__write_string("\t\tTry hard to find as small a set of changes as possible.\n"),
io__write_string("\t-B, --ignore-blank-lines\n"),
io__write_string("\t\tIgnore changes whose lines are all blank.\n").
%-----------------------------------------------------------------------------%
%-----------------------------------------------------------------------------%
|
