feat: `zsh` fast-syntax-highlighting plugin

1 files changed, 138 insertions, 0 deletions

diff --git a/.config/shell/zsh-fast-syntax-highlighting/:chroma/-nice.ch b/.config/shell/zsh-fast-syntax-highlighting/:chroma/-nice.ch
new file mode 100644
index 0000000..7fa8a94
--- /dev/null
+++ b/.config/shell/zsh-fast-syntax-highlighting/:chroma/-nice.ch
@@ -0,0 +1,138 @@
+# -*- mode: sh; sh-indentation: 4; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2018 Sebastian Gniazdowski
+# Copyright (C) 2019 by Philippe Troin (F-i-f on GitHub)
+# All rights reserved.
+#
+# The only licensing for this file follows.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+
+setopt local_options extendedglob warn_create_global typeset_silent
+
+# Keep chroma-takever state meaning: until ;, handle highlighting via chroma.
+# So the below 8192 assignment takes care that next token will be routed to chroma.
+(( next_word = 2 | 8192 ))
+
+local __first_call="$1" __wrd="$2" __start_pos="$3" __end_pos="$4"
+local __style option_start=0 option_end=0 number_start=0 number_end=0
+local -a match mbegin mend
+
+(( __first_call )) && {
+    # Called for the first time - new command.
+    # FAST_HIGHLIGHT is used because it survives between calls, and
+    # allows to use a single global hash only, instead of multiple
+    # global string variables.
+    FAST_HIGHLIGHT[nice-arg-count]=0
+    FAST_HIGHLIGHT[nice-increment-argument]=0
+
+    # Set style for region_highlight entry. It is used below in
+    # '[[ -n "$__style" ]] ...' line, which adds highlight entry,
+    # like "10 12 fg=green", through `reply' array.
+    #
+    # Could check if command `example' exists and set `unknown-token'
+    # style instead of `command'
+    __style=${FAST_THEME_NAME}precommand
+
+} || {
+    # Following call, i.e. not the first one
+
+    # Check if chroma should end – test if token is of type
+    # "starts new command", if so pass-through – chroma ends
+    [[ "$__arg_type" = 3 ]] && return 2
+
+    if (( in_redirection > 0 || this_word & 128 )) || [[ $__wrd == "<<<" ]]; then
+        return 1
+    fi
+
+    if (( FAST_HIGHLIGHT[nice-increment-argument] )); then
+        (( FAST_HIGHLIGHT[nice-increment-argument] = 0 ))
+        [[ $__wrd = (-|+|)[0-9]## ]] \
+            && __style=${FAST_THEME_NAME}mathnum \
+            || __style=${FAST_THEME_NAME}incorrect-subtle
+    else
+        case $__wrd in
+            -(-|+|)[0-9]##)
+               (( option_start = __start_pos-${#PREBUFFER} ,
+                  option_end   = option_start+1 ,
+                  number_start = option_end ,
+                  number_end   = __end_pos-${#PREBUFFER} ))
+               option_style=${FAST_THEME_NAME}single-hyphen-option
+               ;;
+            (#b)(--adjustment)(=(-|+|)[0-9]#|))
+                (( option_start = __start_pos-${#PREBUFFER} ,
+                   option_end   = option_start+mend[1] ))
+                option_style=${FAST_THEME_NAME}double-hyphen-option
+                [[ -z $match[2] ]] \
+                    && (( FAST_HIGHLIGHT[nice-increment-argument] = 1 )) \
+                    || (( option_end  += 1 ,
+                          number_start = option_start+mbegin[2]-mbegin[1]+1 ,
+                          number_end   = __end_pos-${#PREBUFFER} ))
+                ;;
+            -n)
+                 __style=${FAST_THEME_NAME}double-hyphen-option
+                 FAST_HIGHLIGHT[nice-increment-argument]=1
+                 ;;
+            --*)
+                __style=${FAST_THEME_NAME}double-hyphen-option
+                ;;
+            -*)
+                __style=${FAST_THEME_NAME}single-hyphen-option
+                ;;
+            *)
+                this_word=1
+                next_word=2
+                return 1
+                ;;
+        esac
+
+        (( option_start > 0 && option_end )) \
+            && reply+=("$option_start $option_end ${FAST_HIGHLIGHT_STYLES[$option_style]}")
+        ((  number_start > 0 && number_end  )) \
+            && reply+=("$number_start $number_end ${FAST_HIGHLIGHT_STYLES[${FAST_THEME_NAME}mathnum]}")
+    fi
+}
+
+# Add region_highlight entry (via `reply' array).
+# If 1 will be added to __start_pos, this will highlight "oken".
+# If 1 will be subtracted from __end_pos, this will highlight "toke".
+# $PREBUFFER is for specific situations when users does command \<ENTER>
+# i.e. when multi-line command using backslash is entered.
+#
+# This is a common place of adding such entry, but any above code can do
+# it itself (and it does in other chromas) and skip setting __style to
+# this way disable this code.
+[[ -n "$__style" ]] && (( __start=__start_pos-${#PREBUFFER}, __end=__end_pos-${#PREBUFFER}, __start >= 0 )) && reply+=("$__start $__end ${FAST_HIGHLIGHT_STYLES[$__style]}")
+
+# We aren't passing-through, do obligatory things ourselves.
+# _start_pos=$_end_pos advainces pointers in command line buffer.
+#
+# To pass through means to `return 1'. The highlighting of
+# this single token is then done by fast-syntax-highlighting's
+# main code and chroma doesn't have to do anything.
+(( this_word = next_word ))
+_start_pos=$_end_pos
+
+return 0
+
+# vim:ft=zsh:et:sw=4