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/*
* XML text mode for QEmacs.
* Copyright (c) 2002 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "qe.h"
/* colorization states */
enum {
XML_TAG = 1,
XML_COMMENT,
XML_TAG_SCRIPT,
XML_TAG_STYLE,
XML_STYLE,
XML_SCRIPT = 0x10, /* special mode for inside a script, ored with c mode */
};
void xml_colorize_line(unsigned int *buf, int len,
int *colorize_state_ptr, int state_only)
{
int c, state;
unsigned int *p, *p_start, *p1;
state = *colorize_state_ptr;
p = buf;
p_start = p;
/* if already in a state, go directly in the code parsing it */
if (state & XML_SCRIPT)
goto parse_script;
switch(state) {
case XML_COMMENT:
goto parse_comment;
case XML_TAG:
case XML_TAG_SCRIPT:
goto parse_tag;
case XML_STYLE:
goto parse_style;
default:
break;
}
for(;;) {
p_start = p;
c = *p;
if (c == '\n') {
goto the_end;
} else if (c == '<' && state == 0) {
p++;
if (p[0] == '!' && p[1] == '-' && p[2] == '-') {
p += 3;
state = XML_COMMENT;
/* wait until end of comment */
parse_comment:
while (*p != '\n') {
if (p[0] == '-' && p[1] == '-' && p[2] == '>') {
p += 3;
state = 0;
break;
} else {
p++;
}
}
set_color(p_start, p - p_start, QE_STYLE_COMMENT);
} else {
/* we are in a tag */
if (ustristart(p, "SCRIPT", (const unsigned int **)&p)) {
state = XML_TAG_SCRIPT;
} else if (ustristart(p, "STYLE", (const unsigned int **)&p)) {
state = XML_TAG_STYLE;
}
parse_tag:
while (*p != '\n') {
if (*p == '>') {
p++;
if (state == XML_TAG_SCRIPT)
state = XML_SCRIPT;
else if (state == XML_TAG_STYLE)
state = XML_STYLE;
else
state = 0;
break;
} else {
p++;
}
}
set_color(p_start, p - p_start, QE_STYLE_TAG);
if (state == XML_SCRIPT) {
/* javascript coloring */
p_start = p;
parse_script:
for(;;) {
if (*p == '\n') {
state &= ~XML_SCRIPT;
c_colorize_line(p_start, p - p_start, &state, state_only);
state |= XML_SCRIPT;
break;
} else if (ustristart(p, "</SCRIPT", (const unsigned int **)&p1)) {
while (*p1 != '\n' && *p1 != '>')
p1++;
if (*p1 == '>')
p1++;
/* XXX: need to add '\n' */
state &= ~XML_SCRIPT;
c_colorize_line(p_start, p - p_start, &state, state_only);
state |= XML_SCRIPT;
set_color(p, p1 - p, QE_STYLE_TAG);
p = p1;
state = 0;
break;
} else {
p++;
}
}
} else if (state == XML_STYLE) {
/* stylesheet coloring */
p_start = p;
parse_style:
for(;;) {
if (*p == '\n') {
set_color(p_start, p - p_start, QE_STYLE_CSS);
break;
} else if (ustristart(p, "</STYLE", (const unsigned int **)&p1)) {
while (*p1 != '\n' && *p1 != '>')
p1++;
if (*p1 == '>')
p1++;
set_color(p_start, p - p_start, QE_STYLE_CSS);
set_color(p, p1 - p, QE_STYLE_TAG);
p = p1;
state = 0;
break;
} else {
p++;
}
}
}
}
} else {
/* text */
p++;
}
}
the_end:
*colorize_state_ptr = state;
}
int xml_mode_probe(ModeProbeData *p1)
{
const char *p;
p = p1->buf;
while (css_is_space(*p))
p++;
if (*p != '<')
return 0;
p++;
if (*p != '!' && *p != '?' && *p != '/' &&
!isalpha(*p))
return 0;
return 90; /* leave some room for more specific XML parser */
}
int xml_mode_init(EditState *s, ModeSavedData *saved_data)
{
int ret;
ret = text_mode_init(s, saved_data);
if (ret)
return ret;
set_colorize_func(s, xml_colorize_line);
return 0;
}
static ModeDef xml_mode;
int xml_init(void)
{
/* c mode is almost like the text mode, so we copy and patch it */
memcpy(&xml_mode, &text_mode, sizeof(ModeDef));
xml_mode.name = "xml";
xml_mode.mode_probe = xml_mode_probe;
xml_mode.mode_init = xml_mode_init;
qe_register_mode(&xml_mode);
return 0;
}
qe_module_init(xml_init);
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