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st-autocomplete-20211215-181216-st-0.8.4-testrelease.diff (19137B)

---

 diff -uraN st-0.8.4/autocomplete.h st-autocomplete/autocomplete.h
 --- st-0.8.4/autocomplete.h	1970-01-01 04:00:00.000000000 +0400
 +++ st-autocomplete/autocomplete.h	2021-12-14 20:20:03.322050025 +0400
 @@ -0,0 +1,16 @@
 +# ifndef __ST_AUTOCOMPLETE_H
 +# define __ST_AUTOCOMPLETE_H
 +
 +enum {
 +	ACMPL_DEACTIVATE,
 +	ACMPL_WORD,
 +	ACMPL_WWORD,
 +	ACMPL_FUZZY_WORD,
 +	ACMPL_FUZZY_WWORD,
 +	ACMPL_FUZZY,
 +	ACMPL_SUFFIX,
 +	ACMPL_SURROUND,
 +	ACMPL_UNDO,
 +};
 +
 +# endif // __ST_AUTOCOMPLETE_H
 diff -uraN st-0.8.4/config.def.h st-autocomplete/config.def.h
 --- st-0.8.4/config.def.h	2021-12-14 20:03:03.981322164 +0400
 +++ st-autocomplete/config.def.h	2021-12-14 20:22:30.088821478 +0400
 @@ -168,6 +168,8 @@
   */
  static uint forcemousemod = ShiftMask;
  
 +# include "autocomplete.h"
 +
  /*
   * Internal mouse shortcuts.
   * Beware that overloading Button1 will disable the selection.
 @@ -199,6 +201,14 @@
  	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
  	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
  	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
 +	{ ControlMask|Mod1Mask, XK_slash,       autocomplete,   { .i = ACMPL_WORD        } },
 +	{ ControlMask|Mod1Mask, XK_period,      autocomplete,   { .i = ACMPL_FUZZY_WORD  } },
 +	{ ControlMask|Mod1Mask, XK_comma,       autocomplete,   { .i = ACMPL_FUZZY       } },
 +	{ ControlMask|Mod1Mask, XK_apostrophe,  autocomplete,   { .i = ACMPL_SUFFIX      } },
 +	{ ControlMask|Mod1Mask, XK_semicolon,   autocomplete,   { .i = ACMPL_SURROUND    } },
 +	{ ControlMask|Mod1Mask, XK_bracketright,autocomplete,   { .i = ACMPL_WWORD       } },
 +	{ ControlMask|Mod1Mask, XK_bracketleft, autocomplete,   { .i = ACMPL_FUZZY_WWORD } },
 +	{ ControlMask|Mod1Mask, XK_equal,       autocomplete,   { .i = ACMPL_UNDO        } },
  };
  
  /*
 diff -uraN st-0.8.4/Makefile st-autocomplete/Makefile
 --- st-0.8.4/Makefile	2021-12-14 20:03:03.981322164 +0400
 +++ st-autocomplete/Makefile	2021-12-15 07:12:40.291573671 +0400
 @@ -44,6 +44,8 @@
  	mkdir -p $(DESTDIR)$(PREFIX)/bin
  	cp -f st $(DESTDIR)$(PREFIX)/bin
  	chmod 755 $(DESTDIR)$(PREFIX)/bin/st
 +	cp -f st-autocomplete $(DESTDIR)$(PREFIX)/bin
 +	chmod 755 $(DESTDIR)$(PREFIX)/bin/st-autocomplete
  	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
  	sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
  	chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
 @@ -52,6 +54,7 @@
  
  uninstall:
  	rm -f $(DESTDIR)$(PREFIX)/bin/st
 +	rm -f $(DESTDIR)$(PREFIX)/bin/st-autocomplete
  	rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
  
  .PHONY: all options clean dist install uninstall
 diff -uraN st-0.8.4/st-autocomplete st-autocomplete/st-autocomplete
 --- st-0.8.4/st-autocomplete	1970-01-01 04:00:00.000000000 +0400
 +++ st-autocomplete/st-autocomplete	2021-12-14 20:18:13.171971360 +0400
 @@ -0,0 +1,266 @@
 +#!/usr/bin/perl
 +#########################################################################
 +# Copyright (C) 2012-2021  Wojciech Siewierski, Gaspar Vardanyan        #
 +#                                                                       #
 +# This program is free software: you can redistribute it and/or modify  #
 +# it under the terms of the GNU General Public License as published by  #
 +# the Free Software Foundation, either version 3 of the License, or     #
 +# (at your option) any later version.                                   #
 +#                                                                       #
 +# This program is distributed in the hope that it will be useful,       #
 +# but WITHOUT ANY WARRANTY; without even the implied warranty of        #
 +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         #
 +# GNU General Public License for more details.                          #
 +#                                                                       #
 +# You should have received a copy of the GNU General Public License     #
 +# along with this program.  If not, see <http://www.gnu.org/licenses/>. #
 +#########################################################################
 +
 +my ($cmd, $cursor_row, $cursor_column) = @ARGV;
 +
 +# A reference to a function that transforms the completed word
 +# into a regex matching the completions. Usually generated by
 +# generate_matcher().
 +#
 +# For example
 +#   $fun = generate_matcher(".*");
 +#   $fun->("foo");
 +# would return "f.*o.*o"
 +#
 +# In other words, indirectly decides which characters can
 +# appear in the completion.
 +my $matcher;
 +
 +# A regular expression matching a character before each match.
 +# For example, it you want to match the text after a
 +# whitespace, set it to "\s".
 +my $char_class_before;
 +
 +# A regular expression matching every character in the entered
 +# text that will be used to find matching completions. Usually
 +# "\w" or similar.
 +my $char_class_to_complete;
 +
 +# A regular expression matching every allowed last character
 +# of the completion (uses greedy matching).
 +my $char_class_at_end;
 +
 +if ($cmd eq 'word-complete') {
 +	# Basic word completion. Completes the current word
 +	# without any special matching.
 +	$char_class_before      = '[^-\w]';
 +	$matcher                = sub { quotemeta shift }; # identity
 +	$char_class_at_end      = '[-\w]';
 +	$char_class_to_complete = '[-\w]';
 +} elsif ($cmd eq 'WORD-complete') {
 +	# The same as above but in the Vim meaning of a "WORD" --
 +	# whitespace delimited.
 +	$char_class_before      = '\s';
 +	$matcher                = sub { quotemeta shift };
 +	$char_class_at_end      = '\S';
 +	$char_class_to_complete = '\S';
 +} elsif ($cmd eq 'fuzzy-word-complete' ||
 +		 $cmd eq 'skeleton-word-complete') {
 +	# Fuzzy completion of the current word.
 +	$char_class_before      = '[^-\w]';
 +	$matcher                = generate_matcher('[-\w]*');
 +	$char_class_at_end      = '[-\w]';
 +	$char_class_to_complete = '[-\w]';
 +} elsif ($cmd eq 'fuzzy-WORD-complete') {
 +	# Fuzzy completion of the current WORD.
 +	$char_class_before      = '\s';
 +	$matcher                = generate_matcher('\S*');
 +	$char_class_at_end      = '\S';
 +	$char_class_to_complete = '\S';
 +} elsif ($cmd eq 'fuzzy-complete' ||
 +		 $cmd eq 'skeleton-complete') {
 +	# Fuzzy completion of an arbitrary text.
 +	$char_class_before      = '\W';
 +	$matcher                = generate_matcher('.*?');
 +	$char_class_at_end      = '\w';
 +	$char_class_to_complete = '\S';
 +} elsif ($cmd eq 'suffix-complete') {
 +	# Fuzzy completion of an completing suffixes, like
 +	# completing test=hello from /blah/hello.
 +	$char_class_before      = '\S';
 +	$matcher                = generate_matcher('\S*');
 +	$char_class_at_end      = '\S';
 +	$char_class_to_complete = '\S';
 +} elsif ($cmd eq 'surround-complete') {
 +	# Completing contents of quotes and braces.
 +
 +	# Here we are using three named groups: s, b, p for quotes, braces
 +	# and parenthesis.
 +	$char_class_before      = '((?<q>["\'`])|(?<b>\[)|(?<p>\())';
 +
 +	$matcher                = generate_matcher('.*?');
 +
 +	# Here we match text till enclosing pair, using perl conditionals in
 +	# regexps (?(condition)yes-expression|no-expression).
 +	# \0 is used to hack concatenation with '*' later in the code.
 +	$char_class_at_end      = '.*?(.(?=(?(<b>)\]|((?(<p>)\)|\g{q})))))\0';
 +	$char_class_to_complete = '\S';
 +}
 +
 +my $lines = [];
 +
 +while (<STDIN>)
 +{
 +	push @{$lines}, $_;
 +}
 +
 +# read the word behind the cursor
 +$_ = substr(@{$lines} [$cursor_row], 0, $cursor_column); # get the current line up to the cursor...
 +s/.*?($char_class_to_complete*)$/$1/;                 # ...and read the last word from it
 +my $word_to_complete = $_;
 +
 +# ignore the completed word itself
 +$self->{already_completed}{$word_to_complete} = 1;
 +
 +print stdout "$word_to_complete\n";
 +
 +# search for matches
 +while (my $completion = find_match($self,
 +                                        $word_to_complete,
 +                                        $self->{next_row} // $cursor_row,
 +                                        $matcher->($word_to_complete),
 +                                        $char_class_before,
 +                                        $char_class_at_end)
 +) {
 +	calc_match_coords($self,
 +					$self->{next_row}+1,
 +					$completion);
 +	print stdout "$completion @{$self->{highlight}}\n";
 +}
 +
 +leave($self);
 +
 +
 +
 +######################################################################
 +
 +# Finds the next matching completion in the row current row or above
 +# while skipping duplicates using skip_duplicates().
 +sub find_match {
 +    my ($self, $word_to_match, $current_row, $regexp, $char_class_before, $char_class_at_end) = @_;
 +    $self->{matches_in_row} //= [];
 +
 +    # cycle through all the matches in the current row if not starting a new search
 +    if (@{$self->{matches_in_row}}) {
 +        return skip_duplicates($self, $word_to_match, $current_row, $regexp, $char_class_before, $char_class_at_end);
 +    }
 +
 +
 +    my $i;
 +    # search through all the rows starting with current one or one above the last checked
 +    for ($i = $current_row; $i >= 0; --$i) {
 +        my $line = @{$lines} [$i];   # get the line of text from the row
 +
 +        if ($i == $cursor_row) {
 +            $line = substr $line, 0, $cursor_column;
 +        }
 +
 +        $_ = $line;
 +
 +        # find all the matches in the current line
 +        my $match;
 +        push @{$self->{matches_in_row}}, $+{match} while ($_, $match) = /
 +                                                                         (.*${char_class_before})
 +                                                                         (?<match>
 +                                                                             ${regexp}
 +                                                                             ${char_class_at_end}*
 +                                                                         )
 +                                                                     /ix;
 +        # corner case: match at the very beginning of line
 +        push @{$self->{matches_in_row}}, $+{match} if $line =~ /^(${char_class_before}){0}(?<match>$regexp$char_class_at_end*)/i;
 +
 +        if (@{$self->{matches_in_row}}) {
 +            # remember which row should be searched next
 +            $self->{next_row} = --$i;
 +
 +            # arguments needed for find_match() mutual recursion
 +            return skip_duplicates($self, $word_to_match, $i, $regexp, $char_class_before, $char_class_at_end);
 +        }
 +    }
 +
 +    # no more possible completions, revert to the original word
 +    $self->{next_row} = -1 if $i < 0;
 +
 +    return undef;
 +}
 +
 +######################################################################
 +
 +# Checks whether the completion found by find_match() was already
 +# found and if it was, calls find_match() again to find the next
 +# completion.
 +#
 +# Takes all the arguments that find_match() would take, to make a
 +# mutually recursive call.
 +sub skip_duplicates {
 +    my $self = $_[0];
 +    my $completion = shift @{$self->{matches_in_row}}; # get the rightmost one
 +
 +    # check for duplicates
 +    if (exists $self->{already_completed}{$completion}) {
 +        # skip this completion
 +        return find_match(@_);
 +    } else {
 +        $self->{already_completed}{$completion} = 1;
 +        return $completion;
 +    }
 +}
 +
 +######################################################################
 +
 +# Returns a function that takes a string and returns that string with
 +# this function's argument inserted between its every two characters.
 +# The resulting string is used as a regular expression matching the
 +# completion candidates.
 +sub generate_matcher {
 +    my $regex_between = shift;
 +
 +    sub {
 +        $_ = shift;
 +
 +        # sorry for this lispy code, I couldn't resist ;)
 +        (join "$regex_between",
 +         (map quotemeta,
 +          (split //)))
 +    }
 +}
 +
 +######################################################################
 +
 +sub calc_match_coords {
 +    my ($self, $linenum, $completion) = @_;
 +
 +    my $line = @{$lines} [$linenum];
 +    my $re = quotemeta $completion;
 +
 +    $line =~ /$re/;
 +
 +	#my ($beg_row, $beg_col) = $line->coord_of($-[0]);
 +	#my ($end_row, $end_col) = $line->coord_of($+[0]);
 +	my $beg = $-[0];
 +	my $end = $+[0];
 +
 +    if (exists $self->{highlight}) {
 +        delete $self->{highlight};
 +    }
 +    # () # TODO: what does () do in perl ????
 +
 +    # $self->{highlight} = [$beg_row, $beg_col, $end_row, $end_col];
 +    $self->{highlight} = [$linenum, $beg, $end];
 +}
 +
 +######################################################################
 +
 +sub leave {
 +    my ($self) = @_;
 +
 +    delete $self->{next_row};
 +    delete $self->{matches_in_row};
 +    delete $self->{already_completed};
 +    delete $self->{highlight};
 +}
 diff -uraN st-0.8.4/st.c st-autocomplete/st.c
 --- st-0.8.4/st.c	2021-12-14 20:03:03.981322164 +0400
 +++ st-autocomplete/st.c	2021-12-15 07:44:05.609586643 +0400
 @@ -17,6 +17,7 @@
  #include <unistd.h>
  #include <wchar.h>
  
 +#include "autocomplete.h"
  #include "st.h"
  #include "win.h"
  
 @@ -2476,6 +2477,9 @@
  		return;
  	}
  
 +	if ( row < term.row  || col < term.col )
 +		autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
 +
  	/*
  	 * slide screen to keep cursor where we expect it -
  	 * tscrollup would work here, but we can optimize to
 @@ -2595,3 +2599,211 @@
  	tfulldirt();
  	draw();
  }
 +
 +void autocomplete (const Arg * arg)
 +{
 +	static _Bool active = 0;
 +
 +	int acmpl_cmdindex = arg -> i;
 +
 +	static int acmpl_cmdindex_prev;
 +
 +	if (active == 0)
 +		acmpl_cmdindex_prev = acmpl_cmdindex;
 +
 +	static const char * const (acmpl_cmd []) = {
 +		[ACMPL_DEACTIVATE]	= "__DEACTIVATE__",
 +		[ACMPL_WORD]		= "word-complete",
 +		[ACMPL_WWORD]		= "WORD-complete",
 +		[ACMPL_FUZZY_WORD]	= "fuzzy-word-complete",
 +		[ACMPL_FUZZY_WWORD]	= "fuzzy-WORD-complete",
 +		[ACMPL_FUZZY]		= "fuzzy-complete",
 +		[ACMPL_SUFFIX]		= "suffix-complete",
 +		[ACMPL_SURROUND]	= "surround-complete",
 +		[ACMPL_UNDO]		= "__UNDO__",
 +	};
 +
 +	static char acmpl [1000];		// ACMPL_ISSUE: why 1000?
 +
 +	static FILE * acmpl_exec = NULL;
 +	static int acmpl_status;
 +
 +	static const char * stbuffile;
 +	static char target [1000];		// ACMPL_ISSUE: why 1000? dynamically allocate char array of size term.col
 +	static size_t targetlen;
 +
 +	static char completion [1000] = {0};		// ACMPL_ISSUE: why 1000? dynamically allocate char array of size term.col
 +	static size_t complen_prev = 0;		// NOTE: always clear this variable after clearing completion
 +
 +// Check for deactivation
 +
 +	if (acmpl_cmdindex == ACMPL_DEACTIVATE)
 +	{
 +
 +//     Deactivate autocomplete mode keeping current completion
 +
 +		if (active)
 +		{
 +			active = 0;
 +			pclose (acmpl_exec);
 +			remove (stbuffile);
 +
 +			if (complen_prev)
 +			{
 +				selclear ();
 +				complen_prev = 0;
 +			}
 +		}
 +
 +		return;
 +	}
 +
 +// Check for undo
 +
 +	if (acmpl_cmdindex == ACMPL_UNDO)
 +	{
 +
 +//     Deactivate autocomplete mode recovering target
 +
 +		if (active)
 +		{
 +			active = 0;
 +			pclose (acmpl_exec);
 +			remove (stbuffile);
 +
 +			if (complen_prev)
 +			{
 +				selclear ();
 +				for (size_t i = 0; i < complen_prev; i++)
 +					ttywrite ((char []) { '\b' }, 1, 1);	// ACMPL_ISSUE: I'm not sure that this is the right way
 +				complen_prev = 0;
 +				ttywrite (target, targetlen, 0);		// ACMPL_ISSUE: I'm not sure that this is a right solution
 +			}
 +		}
 +
 +		return;
 +	}
 +
 +// Check for command change
 +
 +	if (acmpl_cmdindex != acmpl_cmdindex_prev)
 +	{
 +
 +//     If command is changed, goto acmpl_begin avoiding rewriting st buffer
 +
 +		if (active)
 +		{
 +			acmpl_cmdindex_prev = acmpl_cmdindex;
 +
 +			goto acmpl_begin;
 +		}
 +	}
 +
 +// If not active
 +
 +	if (active == 0)
 +	{
 +		acmpl_cmdindex_prev = acmpl_cmdindex;
 +
 +//     Write st buffer to a temp file
 +
 +		stbuffile = tmpnam (NULL);		// check for return value ...
 +										// ACMPL_ISSUE: use coprocesses instead of temp files
 +		sprintf (
 +			acmpl,
 +			"cat %100s | st-autocomplete %500s %d %d",	// ACMPL_ISSUE: why 100 and 500?
 +			stbuffile,
 +			acmpl_cmd [acmpl_cmdindex],
 +			term.c.y,
 +			term.c.x
 +		);
 +
 +		FILE * stbuf = fopen (stbuffile, "w"); // check for opening error ...
 +		char * stbufline = malloc (term.col + 2); // check for allocating error ...
 +
 +		for (size_t y = 0; y < term.row; y++)
 +		{
 +			size_t x = 0;
 +			for (; x < term.col; x++)
 +				utf8encode (term.line [y] [x].u, stbufline + x);
 +			stbufline [x] = '\n';
 +			stbufline [x + 1] = 0;
 +			fputs (stbufline, stbuf);
 +		}
 +
 +		free (stbufline);
 +		fclose (stbuf);
 +
 +acmpl_begin:
 +
 +//     Run st-autocomplete
 +
 +		acmpl_exec = popen (acmpl, "r");		// ACMPL_ISSUE: popen isn't defined by The Standard. Does it work in BSDs for example?
 +												// check for popen error ...
 +
 +//     Read the target, targetlen
 +
 +		fscanf (acmpl_exec, "%500s\n", target); // check for scanning error ...
 +		targetlen = strlen (target);
 +	}
 +
 +// Read a completion if exists (acmpl_status)
 +
 +	unsigned line, beg, end;
 +
 +	acmpl_status = fscanf (acmpl_exec, "%500s %u %u %u\n", completion, & line, & beg, & end);
 +												// ACMPL_ISSUE: why 500? use term.col instead
 +
 +// Exit if no completions found
 +
 +	if (active == 0 && acmpl_status == EOF)
 +	{
 +
 +//    Close st-autocomplete and exit without activating the autocomplete mode
 +
 +		pclose (acmpl_exec);
 +		remove (stbuffile);
 +		return;
 +	}
 +
 +// If completions found, enable autocomplete mode and autocomplete the target
 +
 +	active = 1;
 +
 +// Clear target before first completion
 +
 +	if (complen_prev == 0)
 +	{
 +		for (size_t i = 0; i < targetlen; i++)
 +			ttywrite ((char []) { '\b' }, 1, 1);	// ACMPL_ISSUE: I'm not sure that this is a right solution
 +	}
 +
 +// Clear previuos completion if this is not the first
 +
 +	else
 +	{
 +		selclear ();
 +		for (size_t i = 0; i < complen_prev; i++)
 +			ttywrite ((char []) { '\b' }, 1, 1);	// ACMPL_ISSUE: I'm not sure that this is a right solution
 +		complen_prev = 0;
 +	}
 +
 +// If no more completions found, reset and restart
 +
 +	if (acmpl_status == EOF)
 +	{
 +		active = 0;
 +		pclose (acmpl_exec);
 +		ttywrite (target, targetlen, 0);
 +		goto acmpl_begin;
 +	}
 +
 +// Read the new completion and autcomplete
 +
 +	selstart (beg, line, 0);
 +	selextend (end - 1, line, 1, 0);
 +	xsetsel (getsel ());
 +
 +	complen_prev = strlen (completion);
 +	ttywrite (completion, complen_prev, 0);
 +}
 diff -uraN st-0.8.4/st.h st-autocomplete/st.h
 --- st-0.8.4/st.h	2021-12-14 20:03:03.981322164 +0400
 +++ st-autocomplete/st.h	2021-12-14 20:28:59.272432749 +0400
 @@ -77,6 +77,8 @@
  	const char *s;
  } Arg;
  
 +void autocomplete (const Arg *);
 +
  void die(const char *, ...);
  void redraw(void);
  void draw(void);
 diff -uraN st-0.8.4/x.c st-autocomplete/x.c
 --- st-0.8.4/x.c	2021-12-14 20:03:03.981322164 +0400
 +++ st-autocomplete/x.c	2021-12-14 20:30:30.045830893 +0400
 @@ -1803,11 +1803,15 @@
  	/* 1. shortcuts */
  	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
  		if (ksym == bp->keysym && match(bp->mod, e->state)) {
 +			if (bp -> func != autocomplete)
 +				autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
  			bp->func(&(bp->arg));
  			return;
  		}
  	}
  
 +	autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
 +
  	/* 2. custom keys from config.h */
  	if ((customkey = kmap(ksym, e->state))) {
  		ttywrite(customkey, strlen(customkey), 1);