141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/*
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* EMF colorizer mode for QEmacs.
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*
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* Copyright (c) 2000-2023 Charlie Gordon.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qe.h"
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#define MAX_KEYWORD_SIZE 16
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/*---------------- EMF (JASSPA microemacs macro files) ----------------*/
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static char const emf_keywords[] = {
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"define-macro|!emacro|!if|!elif|!else|!endif|!while|!done|"
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"!repeat|!until|!force|!return|!abort|!goto|!jump|!bell|"
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};
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static char const emf_types[] = {
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"|"
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};
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enum {
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EMF_STYLE_TEXT = QE_STYLE_DEFAULT,
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EMF_STYLE_COMMENT = QE_STYLE_COMMENT,
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EMF_STYLE_STRING = QE_STYLE_STRING,
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EMF_STYLE_KEYWORD = QE_STYLE_KEYWORD,
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EMF_STYLE_TYPE = QE_STYLE_TYPE,
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EMF_STYLE_FUNCTION = QE_STYLE_FUNCTION,
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EMF_STYLE_NUMBER = QE_STYLE_NUMBER,
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EMF_STYLE_VARIABLE = QE_STYLE_VARIABLE,
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EMF_STYLE_IDENTIFIER = QE_STYLE_DEFAULT,
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EMF_STYLE_PREPROCESS = QE_STYLE_PREPROCESS,
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};
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static void emf_colorize_line(QEColorizeContext *cp,
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char32_t *str, int n, ModeDef *syn)
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{
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char keyword[MAX_KEYWORD_SIZE];
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int i = 0, start, nw = 1, len, style;
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char32_t c;
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while (i < n) {
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start = i;
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c = str[i++];
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switch (c) {
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case '-':
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if (qe_isdigit(str[i]))
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goto number;
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break;
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case ';':
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i = n;
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SET_COLOR(str, start, i, EMF_STYLE_COMMENT);
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continue;
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case '\"':
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/* parse string const */
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while (i < n) {
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if (str[i] == '\\' && i + 1 < n) {
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i += 2; /* skip escaped char */
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continue;
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}
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if (str[i++] == '\"')
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break;
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}
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SET_COLOR(str, start, i, EMF_STYLE_STRING);
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continue;
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default:
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break;
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}
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/* parse numbers */
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if (qe_isdigit(c)) {
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number:
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for (; i < n; i++) {
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if (!qe_isalnum(str[i]))
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break;
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}
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SET_COLOR(str, start, i, EMF_STYLE_NUMBER);
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continue;
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}
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/* parse identifiers and keywords */
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if (c == '$' || c == '!' || c == '#' || qe_isalpha_(c)) {
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len = 0;
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keyword[len++] = c;
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for (; qe_isalnum_(str[i]) || str[i] == '-'; i++) {
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if (len < countof(keyword) - 1)
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keyword[len++] = str[i];
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}
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keyword[len] = '\0';
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if (c == '$' || c == '#') {
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style = EMF_STYLE_VARIABLE;
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} else
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if (strfind(syn->keywords, keyword)) {
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style = EMF_STYLE_KEYWORD;
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} else
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if (strfind(syn->types, keyword)) {
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style = EMF_STYLE_TYPE;
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} else
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if (nw++ == 1) {
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style = EMF_STYLE_FUNCTION;
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} else {
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style = EMF_STYLE_IDENTIFIER;
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}
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SET_COLOR(str, start, i, style);
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continue;
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}
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}
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}
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static ModeDef emf_mode = {
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.name = "emf",
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.extensions = "emf",
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.keywords = emf_keywords,
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.types = emf_types,
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.colorize_func = emf_colorize_line,
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};
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static int emf_init(QEmacsState *qs)
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{
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qe_register_mode(&emf_mode, MODEF_SYNTAX);
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return 0;
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}
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qe_module_init(emf_init);
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