150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/*
|
|
* Postscript language mode for QEmacs.
|
|
*
|
|
* Copyright (c) 2000-2023 Charlie Gordon.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qe.h"
|
|
|
|
/*---------------- PostScript colors ----------------*/
|
|
|
|
enum {
|
|
IN_PS_STRING = 0x0F /* ( ... ) level */,
|
|
IN_PS_COMMENT = 0x10,
|
|
};
|
|
|
|
enum {
|
|
PS_STYLE_TEXT = QE_STYLE_DEFAULT,
|
|
PS_STYLE_COMMENT = QE_STYLE_COMMENT,
|
|
PS_STYLE_STRING = QE_STYLE_STRING,
|
|
PS_STYLE_NUMBER = QE_STYLE_DEFAULT,
|
|
PS_STYLE_IDENTIFIER = QE_STYLE_FUNCTION,
|
|
};
|
|
|
|
#define wrap 0
|
|
|
|
static void ps_colorize_line(QEColorizeContext *cp,
|
|
char32_t *str, int n, ModeDef *syn)
|
|
{
|
|
int i = 0, start = i;
|
|
char32_t c;
|
|
int colstate = cp->colorize_state;
|
|
|
|
if (colstate & IN_PS_COMMENT)
|
|
goto in_comment;
|
|
|
|
if (colstate & IN_PS_STRING)
|
|
goto in_string;
|
|
|
|
colstate = 0;
|
|
|
|
while (i < n) {
|
|
start = i;
|
|
c = str[i++];
|
|
switch (c) {
|
|
/* Should deal with '<...>' '<<...>>' '<~...~>' tokens. */
|
|
case '%':
|
|
in_comment:
|
|
if (wrap)
|
|
colstate |= IN_PS_COMMENT;
|
|
else
|
|
colstate &= ~IN_PS_COMMENT;
|
|
i = n;
|
|
SET_COLOR(str, start, i, PS_STYLE_COMMENT);
|
|
continue;
|
|
case '(':
|
|
colstate++;
|
|
in_string:
|
|
/* parse string skipping embedded \\ */
|
|
while (i < n) {
|
|
switch (str[i++]) {
|
|
case '(':
|
|
colstate++;
|
|
continue;
|
|
case ')':
|
|
colstate--;
|
|
if (!(colstate & IN_PS_STRING))
|
|
break;
|
|
continue;
|
|
case '\\':
|
|
if (i == n)
|
|
break;
|
|
i++;
|
|
continue;
|
|
default:
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
SET_COLOR(str, start, i, PS_STYLE_STRING);
|
|
continue;
|
|
default:
|
|
break;
|
|
}
|
|
/* parse numbers */
|
|
if (qe_isdigit(c)) {
|
|
for (; i < n; i++) {
|
|
if (!qe_isalnum(str[i]) && str[i] != '.')
|
|
break;
|
|
}
|
|
SET_COLOR(str, start, i, PS_STYLE_NUMBER);
|
|
continue;
|
|
}
|
|
/* parse identifiers and keywords */
|
|
if (qe_isalpha_(c)) {
|
|
for (; i < n; i++) {
|
|
if (qe_findchar(" \t\r\n,()<>[]{}/", str[i]))
|
|
break;
|
|
}
|
|
SET_COLOR(str, start, i, PS_STYLE_IDENTIFIER);
|
|
continue;
|
|
}
|
|
}
|
|
cp->colorize_state = colstate;
|
|
#undef wrap
|
|
}
|
|
|
|
static int ps_mode_probe(ModeDef *mode, ModeProbeData *p)
|
|
{
|
|
if (match_extension(p->filename, mode->extensions))
|
|
return 80;
|
|
|
|
if (*p->buf == '%' && qe_stristr((const char *)p->buf, "script"))
|
|
return 40;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static ModeDef ps_mode = {
|
|
.name = "Postscript",
|
|
.extensions = "ps|ms|eps",
|
|
.mode_probe = ps_mode_probe,
|
|
.colorize_func = ps_colorize_line,
|
|
};
|
|
|
|
static int ps_init(QEmacsState *qs)
|
|
{
|
|
qe_register_mode(&ps_mode, MODEF_SYNTAX);
|
|
|
|
return 0;
|
|
}
|
|
|
|
qe_module_init(ps_init);
|