diff -uraN st-0.8.5/autocomplete.h st-autocomplete/autocomplete.h
--- st-0.8.5/autocomplete.h 1970-01-01 04:00:00.000000000 +0400
+++ st-autocomplete/autocomplete.h 2022-03-13 02:45:34.586842452 +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-0.8.5/config.def.h st-autocomplete/config.def.h
--- st-0.8.5/config.def.h 2022-03-13 02:45:34.586842452 +0400
+++ st-autocomplete/config.def.h 2022-03-13 02:45:34.586842452 +0400
@@ -170,6 +170,8 @@
*/
static uint forcemousemod = ShiftMask;
+#include "autocomplete.h"
+
/*
* Internal mouse shortcuts.
* Beware that overloading Button1 will disable the selection.
@@ -187,6 +189,8 @@
#define MODKEY Mod1Mask
#define TERMMOD (ControlMask|ShiftMask)
+#define ACMPL_MOD ControlMask|Mod1Mask
+
static Shortcut shortcuts[] = {
/* mask keysym function argument */
{ XK_ANY_MOD, XK_Break, sendbreak, {.i = 0} },
@@ -201,6 +205,14 @@
{ TERMMOD, XK_Y, selpaste, {.i = 0} },
{ ShiftMask, XK_Insert, selpaste, {.i = 0} },
{ TERMMOD, XK_Num_Lock, numlock, {.i = 0} },
+ { ACMPL_MOD, XK_slash, autocomplete, { .i = ACMPL_WORD } },
+ { ACMPL_MOD, XK_period, autocomplete, { .i = ACMPL_FUZZY_WORD } },
+ { ACMPL_MOD, XK_comma, autocomplete, { .i = ACMPL_FUZZY } },
+ { ACMPL_MOD, XK_apostrophe, autocomplete, { .i = ACMPL_SUFFIX } },
+ { ACMPL_MOD, XK_semicolon, autocomplete, { .i = ACMPL_SURROUND } },
+ { ACMPL_MOD, XK_bracketright,autocomplete, { .i = ACMPL_WWORD } },
+ { ACMPL_MOD, XK_bracketleft, autocomplete, { .i = ACMPL_FUZZY_WWORD } },
+ { ACMPL_MOD, XK_equal, autocomplete, { .i = ACMPL_UNDO } },
};
/*
diff -uraN st-0.8.5/Makefile st-autocomplete/Makefile
--- st-0.8.5/Makefile 2022-03-13 02:45:34.586842452 +0400
+++ st-autocomplete/Makefile 2022-03-13 02:45:34.586842452 +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-0.8.5/st-autocomplete st-autocomplete/st-autocomplete
--- st-0.8.5/st-autocomplete 1970-01-01 04:00:00.000000000 +0400
+++ st-autocomplete/st-autocomplete 2022-03-27 22:57:29.018288223 +0400
@@ -0,0 +1,310 @@
+#!/usr/bin/perl
+#########################################################################
+# Copyright (C) 2012-2017 Wojciech Siewierski #
+# #
+# 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;
+
+my $lines = [];
+my $lines1 = [];
+
+my $last_line = -1;
+my $lines_before_cursor = 0;
+
+while (<stdin>)
+{
+ $last_line++;
+
+ s/[^[:print:]]/?/g;
+
+ if ($last_line < $cursor_row)
+ {
+ unshift @{$lines1}, $_;
+ $lines_before_cursor++;
+ }
+ else
+ {
+ unshift @{$lines}, $_;
+ }
+}
+
+foreach (@{$lines1})
+{
+ unshift @{$lines}, $_;
+}
+
+my $cursor_row_in = $cursor_row;
+
+$cursor_row = $last_line;
+
+
+$self = {};
+
+# 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';
+}
+
+
+# use the last used word or read the word behind the cursor
+my $word_to_complete = read_word_at_coord($self, $cursor_row, $cursor_column,
+ $char_class_to_complete);
+
+print stdout "$word_to_complete\n";
+
+if ($word_to_complete) {
+ while (1) {
+ # ignore the completed word itself
+ $self->{already_completed}{$word_to_complete} = 1;
+
+ # continue the last search or start from the current row
+ my $completion = find_match($self,
+ $word_to_complete,
+ $self->{next_row} // $cursor_row,
+ $matcher->($word_to_complete),
+ $char_class_before,
+ $char_class_at_end);
+ if ($completion) {
+ print stdout $completion."\n".join ("\n", @{$self->{highlight}})."\n";
+ }
+ else {
+ last;
+ }
+ }
+}
+
+######################################################################
+
+sub highlight_match {
+ my ($self, $linenum, $completion) = @_;
+
+ # clear_highlight($self);
+
+ my $line = @{$lines}[$linenum];
+ my $re = quotemeta $completion;
+
+ $line =~ /$re/;
+
+ my $beg = $-[0];
+ my $end = $+[0];
+
+ if ($linenum >= $lines_before_cursor)
+ {
+ $lline = $last_line - $lines_before_cursor;
+ $linenum -= $lines_before_cursor;
+ $linenum = $lline - $linenum;
+ $linenum += $lines_before_cursor;
+ }
+
+
+ $self->{highlight} = [$linenum, $beg, $end];
+}
+
+######################################################################
+
+sub read_word_at_coord {
+ my ($self, $row, $col, $char_class) = @_;
+
+ $_ = substr(@{$lines} [$row], 0, $col); # get the current line up to the cursor...
+ s/.*?($char_class*)$/$1/; # ...and read the last word from it
+ return $_;
+}
+
+######################################################################
+
+# 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 //)))
+ }
+}
+
+######################################################################
+
+# 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, $word_to_match, $current_row, $regexp, $char_class_before, $char_class_at_end) = @_;
+ my $completion;
+
+ if ($current_row <= $lines_before_cursor)
+ {
+ $completion = shift @{$self->{matches_in_row}}; # get the leftmost one
+ }
+ else
+ {
+ $completion = pop @{$self->{matches_in_row}}; # get the leftmost one
+ }
+
+ # check for duplicates
+ if (exists $self->{already_completed}{$completion}) {
+ # skip this completion
+ return find_match(@_);
+ } else {
+ $self->{already_completed}{$completion} = 1;
+
+ highlight_match($self,
+ $self->{next_row}+1,
+ $completion);
+
+ return $completion;
+ }
+}
+
+######################################################################
+
+# Finds the next matching completion in the row current row or above
+# while skipping duplicates using skip_duplicates().
+sub find_match {
+ my ($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, $char_class_at_end);
+ }
+ }
+
+ # # no more possible completions, revert to the original word
+ # undo_completion($self) if $i < 0;
+
+ return undef;
+}
diff -uraN st-0.8.5/st.c st-autocomplete/st.c
--- st-0.8.5/st.c 2022-03-13 02:45:34.586842452 +0400
+++ st-autocomplete/st.c 2022-03-27 22:28:39.041693478 +0400
@@ -17,6 +17,7 @@
#include <unistd.h>
#include <wchar.h>
+#include "autocomplete.h"
#include "st.h"
#include "win.h"
@@ -2569,6 +2570,8 @@
return;
}
+ autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
+
/*
* slide screen to keep cursor where we expect it -
* tscrollup would work here, but we can optimize to
@@ -2688,3 +2691,256 @@
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
+
+ static int cx, cy;
+
+ // ACMPL_ISSUE: crashes when term.row is too small
+
+// 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;
+ cx = term.c.x;
+ cy = term.c.y;
+
+// Write st buffer to a temp file
+
+ stbuffile = tmpnam (NULL); // ACMPL_ISSUE: check for return value ...
+ // ACMPL_ISSUE: use coprocesses instead of temp files
+
+ FILE * stbuf = fopen (stbuffile, "w"); // ACMPL_ISSUE: check for opening error ...
+ char * stbufline = malloc (term.col + 2); // ACMPL_ISSUE: check for allocating error ...
+
+ int cxp = 0;
+
+ for (size_t y = 0; y < term.row; y++)
+ {
+ if (y == term.c.y) cx += cxp * term.col;
+
+ size_t x = 0;
+ for (; x < term.col; x++)
+ utf8encode (term.line [y] [x].u, stbufline + x);
+ if (term.line [y] [x - 1].mode & ATTR_WRAP)
+ {
+ x--;
+ if (y <= term.c.y) cy--;
+ cxp++;
+ }
+ else
+ {
+ stbufline [x] = '\n';
+ cxp = 0;
+ }
+ stbufline [x + 1] = 0;
+ fputs (stbufline, stbuf);
+ }
+
+ free (stbufline);
+ fclose (stbuf);
+
+acmpl_begin:
+
+// Run st-autocomplete
+
+ sprintf (
+ acmpl,
+ "cat %100s | st-autocomplete %500s %d %d", // ACMPL_ISSUE: why 100 and 500?
+ stbuffile,
+ acmpl_cmd [acmpl_cmdindex],
+ cy,
+ cx
+ );
+
+ acmpl_exec = popen (acmpl, "r"); // ACMPL_ISSUE: popen isn't defined by The Standard. Does it work in BSDs for example?
+ // ACMPL_ISSUE: check for popen error ...
+
+// Read the target, targetlen
+
+ fscanf (acmpl_exec, "%500s\n", target); // ACMPL_ISSUE: check for scanning error ...
+ targetlen = strlen (target);
+ }
+
+// Read a completion if exists (acmpl_status)
+
+ unsigned line, beg, end;
+
+ acmpl_status = fscanf (acmpl_exec, "%500[^\n]\n%u\n%u\n%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;
+ }
+
+// Count wrapped lines before the current line
+
+ int wl = 0;
+
+ int tl = line;
+
+ for (int l = 0; l < tl; l++)
+ if (term.line [l] [term.col - 1].mode & ATTR_WRAP)
+ {
+ wl++;
+ tl++;
+ }
+
+// Autcomplete
+
+ complen_prev = strlen (completion);
+ ttywrite (completion, complen_prev, 0);
+
+ if (line == cy && beg > cx)
+ {
+ beg += complen_prev - targetlen;
+ end += complen_prev - targetlen;
+
+ // ACMPL_ISSUE: highlignthing doesn't work when "line == cy && beg > cx",
+ // but coordinates are correct...
+ }
+
+ end--;
+
+ selstart (beg % term.col, line + wl + beg / term.col, 0);
+ selextend (end % term.col, line + wl + end / term.col, 1, 0);
+ xsetsel (getsel ());
+}
diff -uraN st-0.8.5/st.h st-autocomplete/st.h
--- st-0.8.5/st.h 2022-03-13 02:45:34.586842452 +0400
+++ st-autocomplete/st.h 2022-03-13 02:45:34.586842452 +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-0.8.5/x.c st-autocomplete/x.c
--- st-0.8.5/x.c 2022-03-13 02:45:34.586842452 +0400
+++ st-autocomplete/x.c 2022-03-13 02:45:34.590175835 +0400
@@ -1834,11 +1834,20 @@
/* 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;
}
}
+ if (!(
+ len == 0 &&
+ e -> state & ~ignoremod // ACMPL_ISSUE: I'm not sure that this is the right way
+ | ACMPL_MOD == ACMPL_MOD
+ ))
+ autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
+
/* 2. custom keys from config.h */
if ((customkey = kmap(ksym, e->state))) {
ttywrite(customkey, strlen(customkey), 1);