141 lines
4 KiB
C
141 lines
4 KiB
C
/*
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* Shell script mode for QEmacs.
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*
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* Copyright (c) 2000-2014 Charlie Gordon.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "qe.h"
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/*---------------- Shell script colors ----------------*/
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enum {
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SCRIPT_STYLE_TEXT = QE_STYLE_DEFAULT,
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SCRIPT_STYLE_COMMENT = QE_STYLE_COMMENT,
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SCRIPT_STYLE_PREPROCESS = QE_STYLE_PREPROCESS,
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SCRIPT_STYLE_COMMAND = QE_STYLE_FUNCTION,
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SCRIPT_STYLE_VARIABLE = QE_STYLE_TYPE,
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SCRIPT_STYLE_STRING = QE_STYLE_STRING,
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SCRIPT_STYLE_BACKTICK = QE_STYLE_STRING_Q,
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};
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static int script_var(const unsigned int *str, int j, int n)
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{
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for (; j < n; j++) {
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if (qe_isalnum_(str[j]) || str[j] == '-')
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continue;
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break;
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}
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return j;
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}
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static void script_colorize_line(QEColorizeContext *cp,
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unsigned int *str, int n, ModeDef *syn)
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{
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int i = 0, j, c, start, style;
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style = SCRIPT_STYLE_COMMAND;
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while (i < n) {
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start = i;
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switch (str[i]) {
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case '#':
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if (i > 0 && str[i - 1] == '$')
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break;
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style = SCRIPT_STYLE_COMMENT;
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if (str[i + 1] == '!')
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style = SCRIPT_STYLE_PREPROCESS;
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i = n;
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SET_COLOR(str, start, i, style);
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continue;
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case '`':
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style = SCRIPT_STYLE_BACKTICK;
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goto has_string;
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case '\'':
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case '"':
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style = SCRIPT_STYLE_STRING;
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has_string:
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/* parse string const */
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for (i++; i < n;) {
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c = str[i++];
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if (c == '\\' && i < n && str[start] == '"')
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i++;
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else
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if ((unsigned int)c == str[start])
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break;
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}
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SET_COLOR(str, start, i, style);
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if (i < n)
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style = SCRIPT_STYLE_TEXT;
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continue;
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case ' ':
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case '\t':
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break;
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default:
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i = script_var(str, i, n);
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if (i > start) {
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j = i;
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while (qe_isblank(str[j]))
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j++;
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if (str[j] == '=')
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style = SCRIPT_STYLE_VARIABLE;
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SET_COLOR(str, start, i, style);
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style = SCRIPT_STYLE_TEXT;
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continue;
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}
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// Should support << syntax
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// Should support $ syntax
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style = SCRIPT_STYLE_TEXT;
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break;
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}
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i++;
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}
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}
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static int script_mode_probe(ModeDef *mode, ModeProbeData *p)
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{
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if (match_extension(p->filename, mode->extensions)
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|| match_shell_handler(cs8(p->buf), mode->shell_handlers)
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|| stristart(p->filename, ".bash", NULL)
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|| stristart(p->filename, ".profile", NULL)) {
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return 80;
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}
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if (p->buf[0] == '#') {
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if (p->buf[1] == '!')
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return 60;
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if (p->buf[1] == ' ')
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return 25;
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}
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return 1;
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}
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static ModeDef script_mode = {
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.name = "Shell-script",
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.extensions = "sh|bash|csh|ksh|zsh",
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.shell_handlers = "sh|bash|csh|ksh|zsh",
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.mode_probe = script_mode_probe,
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.colorize_func = script_colorize_line,
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};
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static int script_init(void)
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{
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qe_register_mode(&script_mode, MODEF_SYNTAX);
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return 0;
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}
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qe_module_init(script_init);
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