2001-08-24 22:23:17 +04:00
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/* editor syntax highlighting.
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Copyright (C) 1996, 1997, 1998 the Free Software Foundation
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Authors: 1998 Paul Sheer
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$Id$
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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*/
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#include <config.h>
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#include "edit.h"
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/* bytes */
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#define SYNTAX_MARKER_DENSITY 512
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/*
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Mispelled words are flushed from the syntax highlighting rules
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when they have been around longer than
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TRANSIENT_WORD_TIME_OUT seconds. At a cursor rate of 30
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chars per second and say 3 chars + a space per word, we can
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accumulate 450 words absolute max with a value of 60. This is
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below this limit of 1024 words in a context.
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*/
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#define TRANSIENT_WORD_TIME_OUT 60
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#define UNKNOWN_FORMAT "unknown"
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2001-09-08 00:10:45 +04:00
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#ifdef HAVE_SYNTAXH
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2001-08-24 22:23:17 +04:00
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int option_syntax_highlighting = 1;
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int option_auto_spellcheck = 1;
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/* these three functions are called from the outside */
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void edit_load_syntax (WEdit * edit, char **names, char *type);
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void edit_free_syntax_rules (WEdit * edit);
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void edit_get_syntax_color (WEdit * edit, long byte_index, int *fg, int *bg);
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#ifdef HAVE_MAD
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static void *mad_syntax_malloc (size_t x, char *file, int line)
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#define syntax_malloc(x) mad_syntax_malloc (x, __FILE__, __LINE__)
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#else
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static void *syntax_malloc (size_t x)
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#endif
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{
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void *p;
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#ifdef HAVE_MAD
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p = mad_alloc (x, file, line);
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#else
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p = malloc (x);
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#endif
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memset (p, 0, x);
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return p;
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}
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#define syntax_free(x) {if(x){free(x);(x)=0;}}
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static long compare_word_to_right (WEdit * edit, long i, char *text, char *whole_left, char *whole_right, int line_start)
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{
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unsigned char *p, *q;
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int c, d, j;
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if (!*text)
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return -1;
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c = edit_get_byte (edit, i - 1);
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if (line_start)
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if (c != '\n')
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return -1;
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if (whole_left)
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if (strchr (whole_left, c))
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return -1;
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for (p = (unsigned char *) text, q = p + strlen ((char *) p); (unsigned long) p < (unsigned long) q; p++, i++) {
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switch (*p) {
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case '\001':
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p++;
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for (;;) {
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c = edit_get_byte (edit, i);
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if (!*p)
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if (whole_right)
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if (!strchr (whole_right, c))
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break;
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if (c == *p)
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break;
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if (c == '\n')
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return -1;
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i++;
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}
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break;
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case '\002':
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p++;
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j = 0;
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for (;;) {
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c = edit_get_byte (edit, i);
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if (c == *p) {
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j = i;
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if (*p == *text && !p[1]) /* handle eg '+' and @+@ keywords properly */
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break;
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}
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if (j && strchr ((char *) p + 1, c)) /* c exists further down, so it will get matched later */
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break;
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if (c == '\n' || c == '\t' || c == ' ') {
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if (!*p) {
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i--;
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break;
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}
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if (!j)
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return -1;
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i = j;
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break;
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}
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if (whole_right)
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if (!strchr (whole_right, c)) {
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if (!*p) {
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i--;
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break;
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}
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if (!j)
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return -1;
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i = j;
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break;
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}
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i++;
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}
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break;
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case '\003':
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p++;
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c = -1;
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for (;; i++) {
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d = c;
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c = edit_get_byte (edit, i);
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for (j = 0; p[j] != '\003'; j++)
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if (c == p[j])
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goto found_char2;
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break;
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found_char2:
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j = c; /* dummy command */
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}
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i--;
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while (*p != '\003')
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p++;
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if (p[1] == d)
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i--;
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break;
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case '\004':
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p++;
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c = edit_get_byte (edit, i);
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for (; *p != '\004'; p++)
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if (c == *p)
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goto found_char3;
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return -1;
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found_char3:
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for (; *p != '\004'; p++);
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break;
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default:
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if (*p != edit_get_byte (edit, i))
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return -1;
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}
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}
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if (whole_right)
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if (strchr (whole_right, edit_get_byte (edit, i)))
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return -1;
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return i;
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}
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#define XXX \
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if (*s < '\005' || *s == (unsigned char) c) \
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goto done; \
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s++;
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static inline char *xx_strchr (const unsigned char *s, int c)
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{
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repeat:
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XXX XXX XXX XXX XXX XXX XXX XXX;
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XXX XXX XXX XXX XXX XXX XXX XXX;
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goto repeat;
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done:
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return (char *) s;
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}
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static inline struct syntax_rule apply_rules_going_right (WEdit * edit, long i, struct syntax_rule rule)
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{
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struct context_rule *r;
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int contextchanged = 0, c;
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int found_right = 0, found_left = 0, keyword_foundleft = 0, keyword_foundright = 0;
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int is_end;
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long end = 0;
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struct syntax_rule _rule = rule;
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if (!(c = edit_get_byte (edit, i)))
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return rule;
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is_end = (rule.end == (unsigned char) i);
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/* check to turn off a keyword */
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if (_rule.keyword) {
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struct key_word *k;
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k = edit->rules[_rule.context]->keyword[_rule.keyword];
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if (edit_get_byte (edit, i - 1) == '\n')
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_rule.keyword = 0;
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if (is_end) {
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_rule.keyword = 0;
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keyword_foundleft = 1;
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}
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}
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/* check to turn off a context */
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if (_rule.context && !_rule.keyword) {
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long e;
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r = edit->rules[_rule.context];
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if (r->first_right == c && !(rule.border & RULE_ON_RIGHT_BORDER) && (e = compare_word_to_right (edit, i, r->right, r->whole_word_chars_left, r->whole_word_chars_right, r->line_start_right)) > 0) {
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_rule.end = e;
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found_right = 1;
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_rule.border = RULE_ON_RIGHT_BORDER;
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if (r->between_delimiters)
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_rule.context = 0;
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} else if (is_end && rule.border & RULE_ON_RIGHT_BORDER) {
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/* always turn off a context at 4 */
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found_left = 1;
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_rule.border = 0;
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if (!keyword_foundleft)
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_rule.context = 0;
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} else if (is_end && rule.border & RULE_ON_LEFT_BORDER) {
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/* never turn off a context at 2 */
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found_left = 1;
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_rule.border = 0;
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}
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}
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/* check to turn on a keyword */
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if (!_rule.keyword) {
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char *p;
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p = (r = edit->rules[_rule.context])->keyword_first_chars;
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while (*(p = xx_strchr ((unsigned char *) p + 1, c))) {
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struct key_word *k;
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int count;
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long e;
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count = (unsigned long) p - (unsigned long) r->keyword_first_chars;
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k = r->keyword[count];
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e = compare_word_to_right (edit, i, k->keyword, k->whole_word_chars_left, k->whole_word_chars_right, k->line_start);
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if (e > 0) {
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end = e;
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_rule.end = e;
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_rule.keyword = count;
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keyword_foundright = 1;
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break;
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}
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}
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}
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/* check to turn on a context */
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if (!_rule.context) {
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if (!found_left && is_end) {
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if (rule.border & RULE_ON_RIGHT_BORDER) {
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_rule.border = 0;
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_rule.context = 0;
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contextchanged = 1;
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_rule.keyword = 0;
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} else if (rule.border & RULE_ON_LEFT_BORDER) {
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r = edit->rules[_rule._context];
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_rule.border = 0;
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if (r->between_delimiters) {
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long e;
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_rule.context = _rule._context;
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contextchanged = 1;
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_rule.keyword = 0;
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if (r->first_right == c && (e = compare_word_to_right (edit, i, r->right, r->whole_word_chars_left, r->whole_word_chars_right, r->line_start_right)) >= end) {
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_rule.end = e;
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found_right = 1;
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_rule.border = RULE_ON_RIGHT_BORDER;
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_rule.context = 0;
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}
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}
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}
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}
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if (!found_right) {
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int count;
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struct context_rule **rules = edit->rules;
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for (count = 1; rules[count]; count++) {
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r = rules[count];
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if (r->first_left == c) {
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long e;
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e = compare_word_to_right (edit, i, r->left, r->whole_word_chars_left, r->whole_word_chars_right, r->line_start_left);
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if (e >= end && (!_rule.keyword || keyword_foundright)) {
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_rule.end = e;
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found_right = 1;
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_rule.border = RULE_ON_LEFT_BORDER;
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_rule._context = count;
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if (!r->between_delimiters)
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if (!_rule.keyword)
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_rule.context = count;
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break;
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}
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}
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}
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}
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}
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/* check again to turn on a keyword if the context switched */
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if (contextchanged && !_rule.keyword) {
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char *p;
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p = (r = edit->rules[_rule.context])->keyword_first_chars;
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while (*(p = xx_strchr ((unsigned char *) p + 1, c))) {
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struct key_word *k;
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int count;
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long e;
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count = (unsigned long) p - (unsigned long) r->keyword_first_chars;
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k = r->keyword[count];
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e = compare_word_to_right (edit, i, k->keyword, k->whole_word_chars_left, k->whole_word_chars_right, k->line_start);
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if (e > 0) {
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_rule.end = e;
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_rule.keyword = count;
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break;
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}
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}
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}
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return _rule;
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}
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static struct syntax_rule edit_get_rule (WEdit * edit, long byte_index)
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{
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long i;
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if (byte_index > edit->last_get_rule) {
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for (i = edit->last_get_rule + 1; i <= byte_index; i++) {
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edit->rule = apply_rules_going_right (edit, i, edit->rule);
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if (i > (edit->syntax_marker ? edit->syntax_marker->offset + SYNTAX_MARKER_DENSITY : SYNTAX_MARKER_DENSITY)) {
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struct _syntax_marker *s;
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s = edit->syntax_marker;
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edit->syntax_marker = syntax_malloc (sizeof (struct _syntax_marker));
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edit->syntax_marker->next = s;
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edit->syntax_marker->offset = i;
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edit->syntax_marker->rule = edit->rule;
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}
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}
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} else if (byte_index < edit->last_get_rule) {
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struct _syntax_marker *s;
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for (;;) {
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if (!edit->syntax_marker) {
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memset (&edit->rule, 0, sizeof (edit->rule));
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for (i = -1; i <= byte_index; i++)
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edit->rule = apply_rules_going_right (edit, i, edit->rule);
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break;
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}
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if (byte_index >= edit->syntax_marker->offset) {
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edit->rule = edit->syntax_marker->rule;
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for (i = edit->syntax_marker->offset + 1; i <= byte_index; i++)
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edit->rule = apply_rules_going_right (edit, i, edit->rule);
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break;
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}
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s = edit->syntax_marker->next;
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syntax_free (edit->syntax_marker);
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edit->syntax_marker = s;
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}
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}
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edit->last_get_rule = byte_index;
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return edit->rule;
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}
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static void translate_rule_to_color (WEdit * edit, struct syntax_rule rule, int *fg, int *bg)
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{
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struct key_word *k;
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k = edit->rules[rule.context]->keyword[rule.keyword];
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*bg = k->bg;
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*fg = k->fg;
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}
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|
|
extern int use_colors;
|
|
|
|
|
|
|
|
void edit_get_syntax_color (WEdit * edit, long byte_index, int *fg, int *bg)
|
|
|
|
{
|
|
|
|
if (edit->rules && byte_index < edit->last_byte &&
|
|
|
|
option_syntax_highlighting && use_colors) {
|
|
|
|
translate_rule_to_color (edit, edit_get_rule (edit, byte_index), fg, bg);
|
|
|
|
} else {
|
|
|
|
*fg = EDITOR_NORMAL_COLOR;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
Returns 0 on error/eof or a count of the number of bytes read
|
|
|
|
including the newline. Result must be free'd.
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_MAD
|
|
|
|
static int mad_read_one_line (char **line, FILE * f, char *file, int line_)
|
|
|
|
#define read_one_line(a,b) mad_read_one_line(a,b,__FILE__,__LINE__)
|
|
|
|
#else
|
|
|
|
static int read_one_line (char **line, FILE * f)
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int len = 256, c, r = 0, i = 0;
|
|
|
|
#ifdef HAVE_MAD
|
|
|
|
p = mad_syntax_malloc (len, file, line_);
|
|
|
|
#else
|
|
|
|
p = syntax_malloc (len);
|
|
|
|
#endif
|
|
|
|
for (;;) {
|
|
|
|
c = fgetc (f);
|
|
|
|
if (c == -1) {
|
|
|
|
if (errno == EINTR)
|
|
|
|
continue;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
} else if (c == '\n') {
|
|
|
|
r = i + 1; /* extra 1 for the newline just read */
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
if (i >= len - 1) {
|
|
|
|
char *q;
|
|
|
|
q = syntax_malloc (len * 2);
|
|
|
|
memcpy (q, p, len);
|
|
|
|
syntax_free (p);
|
|
|
|
p = q;
|
|
|
|
len *= 2;
|
|
|
|
}
|
|
|
|
p[i++] = c;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
p[i] = 0;
|
|
|
|
*line = p;
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *strdup_convert (char *s)
|
|
|
|
{
|
|
|
|
char *r, *p;
|
|
|
|
p = r = (char *) strdup (s);
|
|
|
|
while (*s) {
|
|
|
|
switch (*s) {
|
|
|
|
case '\\':
|
|
|
|
s++;
|
|
|
|
switch (*s) {
|
|
|
|
case ' ':
|
|
|
|
*p = ' ';
|
|
|
|
s--;
|
|
|
|
break;
|
|
|
|
case 'n':
|
|
|
|
*p = '\n';
|
|
|
|
break;
|
|
|
|
case 'r':
|
|
|
|
*p = '\r';
|
|
|
|
break;
|
|
|
|
case 't':
|
|
|
|
*p = '\t';
|
|
|
|
break;
|
|
|
|
case 's':
|
|
|
|
*p = ' ';
|
|
|
|
break;
|
|
|
|
case '*':
|
|
|
|
*p = '*';
|
|
|
|
break;
|
|
|
|
case '\\':
|
|
|
|
*p = '\\';
|
|
|
|
break;
|
|
|
|
case '[':
|
|
|
|
case ']':
|
|
|
|
*p = '\003';
|
|
|
|
break;
|
|
|
|
case '{':
|
|
|
|
case '}':
|
|
|
|
*p = '\004';
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
*p = *s;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case '*':
|
|
|
|
*p = '\001';
|
|
|
|
break;
|
|
|
|
case '+':
|
|
|
|
*p = '\002';
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
*p = *s;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
s++;
|
|
|
|
p++;
|
|
|
|
}
|
|
|
|
*p = '\0';
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define whiteness(x) ((x) == '\t' || (x) == '\n' || (x) == ' ')
|
|
|
|
|
|
|
|
static void get_args (char *l, char **args, int *argc)
|
|
|
|
{
|
|
|
|
*argc = 0;
|
|
|
|
l--;
|
|
|
|
for (;;) {
|
|
|
|
char *p;
|
|
|
|
for (p = l + 1; *p && whiteness (*p); p++);
|
|
|
|
if (!*p)
|
|
|
|
break;
|
|
|
|
for (l = p + 1; *l && !whiteness (*l); l++);
|
|
|
|
*l = '\0';
|
|
|
|
*args = strdup_convert (p);
|
|
|
|
(*argc)++;
|
|
|
|
args++;
|
|
|
|
}
|
|
|
|
*args = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void free_args (char **args)
|
|
|
|
{
|
|
|
|
while (*args) {
|
|
|
|
syntax_free (*args);
|
|
|
|
*args = 0;
|
|
|
|
args++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#define check_a {if(!*a){result=line;break;}}
|
|
|
|
#define check_not_a {if(*a){result=line;break;}}
|
|
|
|
|
|
|
|
int try_alloc_color_pair (char *fg, char *bg);
|
|
|
|
|
|
|
|
int this_try_alloc_color_pair (char *fg, char *bg)
|
|
|
|
{
|
|
|
|
char f[80], b[80], *p;
|
|
|
|
if (bg)
|
|
|
|
if (!*bg)
|
|
|
|
bg = 0;
|
|
|
|
if (fg)
|
|
|
|
if (!*fg)
|
|
|
|
fg = 0;
|
|
|
|
if (fg) {
|
|
|
|
strcpy (f, fg);
|
|
|
|
p = strchr (f, '/');
|
|
|
|
if (p)
|
|
|
|
*p = '\0';
|
|
|
|
fg = f;
|
|
|
|
}
|
|
|
|
if (bg) {
|
|
|
|
strcpy (b, bg);
|
|
|
|
p = strchr (b, '/');
|
|
|
|
if (p)
|
|
|
|
*p = '\0';
|
|
|
|
bg = b;
|
|
|
|
}
|
|
|
|
return try_alloc_color_pair (fg, bg);
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *error_file_name = 0;
|
|
|
|
|
|
|
|
extern char *mc_home;
|
|
|
|
|
|
|
|
static FILE *open_include_file (char *filename)
|
|
|
|
{
|
|
|
|
FILE *f;
|
|
|
|
char p[MAX_PATH_LEN];
|
|
|
|
syntax_free (error_file_name);
|
|
|
|
error_file_name = (char *) strdup (filename);
|
|
|
|
if (*filename == '/')
|
|
|
|
return fopen (filename, "r");
|
|
|
|
strcpy (p, home_dir);
|
|
|
|
strcat (p, EDIT_DIR "/");
|
|
|
|
strcat (p, filename);
|
|
|
|
syntax_free (error_file_name);
|
|
|
|
error_file_name = (char *) strdup (p);
|
|
|
|
f = fopen (p, "r");
|
|
|
|
if (f)
|
|
|
|
return f;
|
|
|
|
strcpy (p, mc_home);
|
|
|
|
strcat (p, "/syntax/");
|
|
|
|
strcat (p, filename);
|
|
|
|
syntax_free (error_file_name);
|
|
|
|
error_file_name = (char *) strdup (p);
|
|
|
|
return fopen (p, "r");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* returns line number on error */
|
|
|
|
static int edit_read_syntax_rules (WEdit * edit, FILE * f)
|
|
|
|
{
|
|
|
|
FILE *g = 0;
|
|
|
|
char *fg, *bg;
|
|
|
|
char last_fg[32] = "", last_bg[32] = "";
|
|
|
|
char whole_right[512];
|
|
|
|
char whole_left[512];
|
|
|
|
char *args[1024], *l = 0;
|
|
|
|
int save_line = 0, line = 0;
|
|
|
|
struct context_rule **r, *c = 0;
|
|
|
|
int num_words = -1, num_contexts = -1;
|
|
|
|
int argc, result = 0;
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
args[0] = 0;
|
|
|
|
|
|
|
|
strcpy (whole_left, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_01234567890");
|
|
|
|
strcpy (whole_right, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_01234567890");
|
|
|
|
|
|
|
|
r = edit->rules = syntax_malloc (MAX_CONTEXTS * sizeof (struct context_rule *));
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
char **a;
|
|
|
|
line++;
|
|
|
|
l = 0;
|
|
|
|
if (!read_one_line (&l, f)) {
|
|
|
|
if (g) {
|
|
|
|
fclose (f);
|
|
|
|
f = g;
|
|
|
|
g = 0;
|
|
|
|
line = save_line + 1;
|
|
|
|
syntax_free (error_file_name);
|
|
|
|
if (l)
|
|
|
|
syntax_free (l);
|
|
|
|
if (!read_one_line (&l, f))
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
get_args (l, args, &argc);
|
|
|
|
a = args + 1;
|
|
|
|
if (!args[0]) {
|
|
|
|
/* do nothing */
|
|
|
|
} else if (!strcmp (args[0], "include")) {
|
|
|
|
if (g || argc != 2) {
|
|
|
|
result = line;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
g = f;
|
|
|
|
f = open_include_file (args[1]);
|
|
|
|
if (!f) {
|
|
|
|
syntax_free (error_file_name);
|
|
|
|
result = line;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
save_line = line;
|
|
|
|
line = 0;
|
|
|
|
} else if (!strcmp (args[0], "wholechars")) {
|
|
|
|
check_a;
|
|
|
|
if (!strcmp (*a, "left")) {
|
|
|
|
a++;
|
|
|
|
strcpy (whole_left, *a);
|
|
|
|
} else if (!strcmp (*a, "right")) {
|
|
|
|
a++;
|
|
|
|
strcpy (whole_right, *a);
|
|
|
|
} else {
|
|
|
|
strcpy (whole_left, *a);
|
|
|
|
strcpy (whole_right, *a);
|
|
|
|
}
|
|
|
|
a++;
|
|
|
|
check_not_a;
|
|
|
|
} else if (!strcmp (args[0], "context")) {
|
|
|
|
check_a;
|
|
|
|
if (num_contexts == -1) {
|
|
|
|
if (strcmp (*a, "default")) { /* first context is the default */
|
|
|
|
*a = 0;
|
|
|
|
check_a;
|
|
|
|
}
|
|
|
|
a++;
|
|
|
|
c = r[0] = syntax_malloc (sizeof (struct context_rule));
|
|
|
|
c->left = (char *) strdup (" ");
|
|
|
|
c->right = (char *) strdup (" ");
|
|
|
|
num_contexts = 0;
|
|
|
|
} else {
|
|
|
|
c = r[num_contexts] = syntax_malloc (sizeof (struct context_rule));
|
|
|
|
if (!strcmp (*a, "exclusive")) {
|
|
|
|
a++;
|
|
|
|
c->between_delimiters = 1;
|
|
|
|
}
|
|
|
|
check_a;
|
|
|
|
if (!strcmp (*a, "whole")) {
|
|
|
|
a++;
|
|
|
|
c->whole_word_chars_left = (char *) strdup (whole_left);
|
|
|
|
c->whole_word_chars_right = (char *) strdup (whole_right);
|
|
|
|
} else if (!strcmp (*a, "wholeleft")) {
|
|
|
|
a++;
|
|
|
|
c->whole_word_chars_left = (char *) strdup (whole_left);
|
|
|
|
} else if (!strcmp (*a, "wholeright")) {
|
|
|
|
a++;
|
|
|
|
c->whole_word_chars_right = (char *) strdup (whole_right);
|
|
|
|
}
|
|
|
|
check_a;
|
|
|
|
if (!strcmp (*a, "linestart")) {
|
|
|
|
a++;
|
|
|
|
c->line_start_left = 1;
|
|
|
|
}
|
|
|
|
check_a;
|
|
|
|
c->left = (char *) strdup (*a++);
|
|
|
|
check_a;
|
|
|
|
if (!strcmp (*a, "linestart")) {
|
|
|
|
a++;
|
|
|
|
c->line_start_right = 1;
|
|
|
|
}
|
|
|
|
check_a;
|
|
|
|
c->right = (char *) strdup (*a++);
|
|
|
|
c->first_left = *c->left;
|
|
|
|
c->first_right = *c->right;
|
|
|
|
c->single_char = (strlen (c->right) == 1);
|
|
|
|
}
|
|
|
|
c->keyword = syntax_malloc (MAX_WORDS_PER_CONTEXT * sizeof (struct key_word *));
|
|
|
|
#if 0
|
|
|
|
c->max_words = MAX_WORDS_PER_CONTEXT;
|
|
|
|
#endif
|
|
|
|
num_words = 1;
|
|
|
|
c->keyword[0] = syntax_malloc (sizeof (struct key_word));
|
|
|
|
fg = *a;
|
|
|
|
if (*a)
|
|
|
|
a++;
|
|
|
|
bg = *a;
|
|
|
|
if (*a)
|
|
|
|
a++;
|
|
|
|
strcpy (last_fg, fg ? fg : "");
|
|
|
|
strcpy (last_bg, bg ? bg : "");
|
|
|
|
c->keyword[0]->fg = this_try_alloc_color_pair (fg, bg);
|
|
|
|
c->keyword[0]->keyword = (char *) strdup (" ");
|
|
|
|
check_not_a;
|
|
|
|
num_contexts++;
|
|
|
|
} else if (!strcmp (args[0], "spellcheck")) {
|
|
|
|
if (!c) {
|
|
|
|
result = line;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
c->spelling = 1;
|
|
|
|
} else if (!strcmp (args[0], "keyword")) {
|
|
|
|
struct key_word *k;
|
|
|
|
if (num_words == -1)
|
|
|
|
*a = 0;
|
|
|
|
check_a;
|
|
|
|
k = r[num_contexts - 1]->keyword[num_words] = syntax_malloc (sizeof (struct key_word));
|
|
|
|
if (!strcmp (*a, "whole")) {
|
|
|
|
a++;
|
|
|
|
k->whole_word_chars_left = (char *) strdup (whole_left);
|
|
|
|
k->whole_word_chars_right = (char *) strdup (whole_right);
|
|
|
|
} else if (!strcmp (*a, "wholeleft")) {
|
|
|
|
a++;
|
|
|
|
k->whole_word_chars_left = (char *) strdup (whole_left);
|
|
|
|
} else if (!strcmp (*a, "wholeright")) {
|
|
|
|
a++;
|
|
|
|
k->whole_word_chars_right = (char *) strdup (whole_right);
|
|
|
|
}
|
|
|
|
check_a;
|
|
|
|
if (!strcmp (*a, "linestart")) {
|
|
|
|
a++;
|
|
|
|
k->line_start = 1;
|
|
|
|
}
|
|
|
|
check_a;
|
|
|
|
if (!strcmp (*a, "whole")) {
|
|
|
|
*a = 0;
|
|
|
|
check_a;
|
|
|
|
}
|
|
|
|
k->keyword = (char *) strdup (*a++);
|
|
|
|
k->first = *k->keyword;
|
|
|
|
fg = *a;
|
|
|
|
if (*a)
|
|
|
|
a++;
|
|
|
|
bg = *a;
|
|
|
|
if (*a)
|
|
|
|
a++;
|
|
|
|
if (!fg)
|
|
|
|
fg = last_fg;
|
|
|
|
if (!bg)
|
|
|
|
bg = last_bg;
|
|
|
|
k->fg = this_try_alloc_color_pair (fg, bg);
|
|
|
|
check_not_a;
|
|
|
|
num_words++;
|
|
|
|
} else if (!strncmp (args[0], "#", 1)) {
|
|
|
|
/* do nothing for comment */
|
|
|
|
} else if (!strcmp (args[0], "file")) {
|
|
|
|
break;
|
|
|
|
} else { /* anything else is an error */
|
|
|
|
*a = 0;
|
|
|
|
check_a;
|
|
|
|
}
|
|
|
|
free_args (args);
|
|
|
|
syntax_free (l);
|
|
|
|
}
|
|
|
|
free_args (args);
|
|
|
|
syntax_free (l);
|
|
|
|
|
|
|
|
if (!edit->rules[0])
|
|
|
|
syntax_free (edit->rules);
|
|
|
|
|
|
|
|
if (result)
|
|
|
|
return result;
|
|
|
|
|
|
|
|
if (num_contexts == -1) {
|
|
|
|
result = line;
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
{
|
|
|
|
char first_chars[MAX_WORDS_PER_CONTEXT + 2], *p;
|
|
|
|
for (i = 0; edit->rules[i]; i++) {
|
|
|
|
c = edit->rules[i];
|
|
|
|
p = first_chars;
|
|
|
|
*p++ = (char) 1;
|
|
|
|
for (j = 1; c->keyword[j]; j++)
|
|
|
|
*p++ = c->keyword[j]->first;
|
|
|
|
*p = '\0';
|
|
|
|
c->keyword_first_chars = syntax_malloc (strlen (first_chars) + 2);
|
|
|
|
strcpy (c->keyword_first_chars, first_chars);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
int edit_check_spelling (WEdit * edit)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void (*syntax_change_callback) (CWidget *) = 0;
|
|
|
|
|
|
|
|
void edit_set_syntax_change_callback (void (*callback) (CWidget *))
|
|
|
|
{
|
|
|
|
syntax_change_callback = callback;
|
|
|
|
}
|
|
|
|
|
|
|
|
void edit_free_syntax_rules (WEdit * edit)
|
|
|
|
{
|
|
|
|
int i, j;
|
|
|
|
if (!edit)
|
|
|
|
return;
|
|
|
|
if (!edit->rules)
|
|
|
|
return;
|
|
|
|
edit_get_rule (edit, -1);
|
|
|
|
syntax_free (edit->syntax_type);
|
|
|
|
edit->syntax_type = 0;
|
|
|
|
if (syntax_change_callback)
|
|
|
|
(*syntax_change_callback) (&edit->widget);
|
|
|
|
for (i = 0; edit->rules[i]; i++) {
|
|
|
|
if (edit->rules[i]->keyword) {
|
|
|
|
for (j = 0; edit->rules[i]->keyword[j]; j++) {
|
|
|
|
syntax_free (edit->rules[i]->keyword[j]->keyword);
|
|
|
|
syntax_free (edit->rules[i]->keyword[j]->whole_word_chars_left);
|
|
|
|
syntax_free (edit->rules[i]->keyword[j]->whole_word_chars_right);
|
|
|
|
syntax_free (edit->rules[i]->keyword[j]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
syntax_free (edit->rules[i]->left);
|
|
|
|
syntax_free (edit->rules[i]->right);
|
|
|
|
syntax_free (edit->rules[i]->whole_word_chars_left);
|
|
|
|
syntax_free (edit->rules[i]->whole_word_chars_right);
|
|
|
|
syntax_free (edit->rules[i]->keyword);
|
|
|
|
syntax_free (edit->rules[i]->keyword_first_chars);
|
|
|
|
syntax_free (edit->rules[i]);
|
|
|
|
}
|
|
|
|
while (edit->syntax_marker) {
|
|
|
|
struct _syntax_marker *s = edit->syntax_marker->next;
|
|
|
|
syntax_free (edit->syntax_marker);
|
|
|
|
edit->syntax_marker = s;
|
|
|
|
}
|
|
|
|
syntax_free (edit->rules);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* returns -1 on file error, line number on error in file syntax */
|
|
|
|
static int edit_read_syntax_file (WEdit * edit, char **names, char *syntax_file, char *editor_file, char *first_line, char *type)
|
|
|
|
{
|
|
|
|
FILE *f;
|
|
|
|
regex_t r;
|
|
|
|
regmatch_t pmatch[1];
|
|
|
|
char *args[1024], *l = 0;
|
|
|
|
int line = 0;
|
|
|
|
int argc;
|
|
|
|
int result = 0;
|
|
|
|
int count = 0;
|
2001-09-12 01:44:52 +04:00
|
|
|
char *lib_file;
|
|
|
|
|
|
|
|
lib_file = concat_dir_and_file (mc_home, "syntax/Syntax");
|
|
|
|
check_for_default (lib_file, syntax_file);
|
|
|
|
g_free (lib_file);
|
|
|
|
|
|
|
|
f = fopen (syntax_file, "r");
|
2001-08-24 22:23:17 +04:00
|
|
|
if (!f)
|
|
|
|
return -1;
|
|
|
|
args[0] = 0;
|
|
|
|
for (;;) {
|
|
|
|
line++;
|
|
|
|
syntax_free (l);
|
|
|
|
if (!read_one_line (&l, f))
|
|
|
|
break;
|
|
|
|
get_args (l, args, &argc);
|
|
|
|
if (!args[0])
|
|
|
|
continue;
|
|
|
|
/* looking for `file ...' lines only */
|
|
|
|
if (strcmp (args[0], "file")) {
|
|
|
|
free_args (args);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/* must have two args or report error */
|
|
|
|
if (!args[1] || !args[2]) {
|
|
|
|
result = line;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (names) {
|
|
|
|
/* 1: just collecting a list of names of rule sets */
|
|
|
|
names[count++] = (char *) strdup (args[2]);
|
|
|
|
names[count] = 0;
|
|
|
|
} else if (type) {
|
|
|
|
/* 2: rule set was explicitly specified by the caller */
|
|
|
|
if (!strcmp (type, args[2]))
|
|
|
|
goto found_type;
|
|
|
|
} else if (editor_file && edit) {
|
|
|
|
/* 3: auto-detect rule set from regular expressions */
|
|
|
|
int q;
|
|
|
|
if (regcomp (&r, args[1], REG_EXTENDED)) {
|
|
|
|
result = line;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* does filename match arg 1 ? */
|
|
|
|
q = !regexec (&r, editor_file, 1, pmatch, 0);
|
|
|
|
regfree (&r);
|
|
|
|
if (!q && args[3]) {
|
|
|
|
if (regcomp (&r, args[3], REG_EXTENDED)) {
|
|
|
|
result = line;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* does first line match arg 3 ? */
|
|
|
|
q = !regexec (&r, first_line, 1, pmatch, 0);
|
|
|
|
regfree (&r);
|
|
|
|
}
|
|
|
|
if (q) {
|
|
|
|
int line_error;
|
|
|
|
found_type:
|
|
|
|
line_error = edit_read_syntax_rules (edit, f);
|
|
|
|
if (line_error) {
|
|
|
|
if (!error_file_name) /* an included file */
|
|
|
|
result = line + line_error;
|
|
|
|
else
|
|
|
|
result = line_error;
|
|
|
|
} else {
|
|
|
|
syntax_free (edit->syntax_type);
|
|
|
|
edit->syntax_type = (char *) strdup (args[2]);
|
|
|
|
/* if there are no rules then turn off syntax highlighting for speed */
|
|
|
|
if (!edit->rules[1])
|
|
|
|
if (!edit->rules[0]->keyword[1] && !edit->rules[0]->spelling) {
|
|
|
|
edit_free_syntax_rules (edit);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* notify the callback of a change in rule set */
|
|
|
|
if (syntax_change_callback)
|
|
|
|
(*syntax_change_callback) (&edit->widget);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
free_args (args);
|
|
|
|
}
|
|
|
|
free_args (args);
|
|
|
|
syntax_free (l);
|
|
|
|
fclose (f);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *get_first_editor_line (WEdit * edit)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
static char s[256];
|
|
|
|
s[0] = '\0';
|
|
|
|
if (!edit)
|
|
|
|
return s;
|
|
|
|
for (i = 0; i < 255; i++) {
|
|
|
|
s[i] = edit_get_byte (edit, i);
|
|
|
|
if (s[i] == '\n') {
|
|
|
|
s[i] = '\0';
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
s[255] = '\0';
|
|
|
|
return s;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* loads rules into edit struct. one of edit or names must be zero. if
|
|
|
|
edit is zero, a list of types will be stored into name. type may be zero
|
|
|
|
in which case the type will be selected according to the filename. */
|
|
|
|
void edit_load_syntax (WEdit * edit, char **names, char *type)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
char *f;
|
|
|
|
|
|
|
|
edit_free_syntax_rules (edit);
|
|
|
|
|
|
|
|
if (!option_syntax_highlighting)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (edit) {
|
|
|
|
if (!edit->filename)
|
|
|
|
return;
|
|
|
|
if (!*edit->filename && !type)
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
f = catstrs (home_dir, SYNTAX_FILE, 0);
|
|
|
|
r = edit_read_syntax_file (edit, names, f, edit ? edit->filename : 0, get_first_editor_line (edit), type);
|
|
|
|
if (r == -1) {
|
|
|
|
edit_free_syntax_rules (edit);
|
|
|
|
edit_error_dialog (_ (" Load syntax file "), _ (" File access error "));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (r) {
|
|
|
|
char s[80];
|
|
|
|
edit_free_syntax_rules (edit);
|
|
|
|
sprintf (s, _ (" Error in file %s on line %d "), error_file_name ? error_file_name : f, r);
|
|
|
|
edit_error_dialog (_ (" Load syntax file "), s);
|
|
|
|
syntax_free (error_file_name);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
int option_syntax_highlighting = 0;
|
|
|
|
|
|
|
|
void edit_load_syntax (WEdit * edit, char **names, char *type)
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
void edit_free_syntax_rules (WEdit * edit)
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
void edit_get_syntax_color (WEdit * edit, long byte_index, int *fg, int *bg)
|
|
|
|
{
|
|
|
|
*fg = NORMAL_COLOR;
|
|
|
|
}
|
|
|
|
|
|
|
|
int edit_check_spelling (WEdit * edit)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2001-09-08 00:10:45 +04:00
|
|
|
#endif /* HAVE_SYNTAXH */
|