1/*-
2 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
67static teken_state_t teken_state_init;
68
69/*
70 * Wrappers for hooks.
71 */
72
73static inline void
74teken_funcs_bell(teken_t *t)
75{
76
77 t->t_funcs->tf_bell(t->t_softc);
78}
79
80static inline void
81teken_funcs_cursor(teken_t *t)
82{
83
84 teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
85 teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
86
87 t->t_funcs->tf_cursor(t->t_softc, &t->t_cursor);
88}
89
90static inline void
91teken_funcs_putchar(teken_t *t, const teken_pos_t *p, teken_char_t c,
92 const teken_attr_t *a)
93{
94
95 teken_assert(p->tp_row < t->t_winsize.tp_row);
96 teken_assert(p->tp_col < t->t_winsize.tp_col);
97
98 t->t_funcs->tf_putchar(t->t_softc, p, c, a);
99}
100
101static inline void
102teken_funcs_fill(teken_t *t, const teken_rect_t *r,
103 const teken_char_t c, const teken_attr_t *a)
104{
105
106 teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
107 teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
108 teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
109 teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
110
111 t->t_funcs->tf_fill(t->t_softc, r, c, a);
112}
113
114static inline void
115teken_funcs_copy(teken_t *t, const teken_rect_t *r, const teken_pos_t *p)
116{
117
118 teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
119 teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
120 teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
121 teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
122 teken_assert(p->tp_row + (r->tr_end.tp_row - r->tr_begin.tp_row) <= t->t_winsize.tp_row);
123 teken_assert(p->tp_col + (r->tr_end.tp_col - r->tr_begin.tp_col) <= t->t_winsize.tp_col);
124
125 t->t_funcs->tf_copy(t->t_softc, r, p);
126}
127
128static inline void
129teken_funcs_param(teken_t *t, int cmd, unsigned int value)
130{
131
132 t->t_funcs->tf_param(t->t_softc, cmd, value);
133}
134
135static inline void
136teken_funcs_respond(teken_t *t, const void *buf, size_t len)
137{
138
139 t->t_funcs->tf_respond(t->t_softc, buf, len);
140}
141
142#include "teken_subr.h"
143#include "teken_subr_compat.h"
144
145/*
146 * Programming interface.
147 */
148
149void
150teken_init(teken_t *t, const teken_funcs_t *tf, void *softc)
151{
152 teken_pos_t tp = { .tp_row = 24, .tp_col = 80 };
153
154#if !(defined(__FreeBSD__) && defined(_KERNEL))
155 df = fopen("teken.log", "w");
156 if (df != NULL)
157 setvbuf(df, NULL, _IOLBF, BUFSIZ);
158#endif /* !(__FreeBSD__ && _KERNEL) */
159
160 t->t_funcs = tf;
161 t->t_softc = softc;
162
163 t->t_nextstate = teken_state_init;
164 t->t_stateflags = 0;
165 t->t_utf8_left = 0;
166
167 t->t_defattr.ta_format = 0;
168 t->t_defattr.ta_fgcolor = TC_WHITE;
169 t->t_defattr.ta_bgcolor = TC_BLACK;
170 teken_subr_do_reset(t);
171
172 teken_set_winsize(t, &tp);
173}
174
175static void
176teken_input_char(teken_t *t, teken_char_t c)
177{
178
179 switch (c) {
180 case '\0':
181 break;
182 case '\a':
183 teken_subr_bell(t);
184 break;
185 case '\b':
186 teken_subr_backspace(t);
187 break;
188 case '\n':
189 case '\x0B':
190 teken_subr_newline(t);
191 break;
192 case '\x0C':
193 teken_subr_newpage(t);
194 break;
195 case '\x0E':
196 if (t->t_stateflags & TS_CONS25)
197 t->t_nextstate(t, c);
198 else
199 teken_scs_switch(t, 1);
200 break;
201 case '\x0F':
202 if (t->t_stateflags & TS_CONS25)
203 t->t_nextstate(t, c);
204 else
205 teken_scs_switch(t, 0);
206 break;
207 case '\r':
208 teken_subr_carriage_return(t);
209 break;
210 case '\t':
211 teken_subr_horizontal_tab(t);
212 break;
213 default:
214 t->t_nextstate(t, c);
215 break;
216 }
217
218 /* Post-processing assertions. */
219 teken_assert(t->t_cursor.tp_row >= t->t_originreg.ts_begin);
220 teken_assert(t->t_cursor.tp_row < t->t_originreg.ts_end);
221 teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
222 teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
223 teken_assert(t->t_saved_cursor.tp_row < t->t_winsize.tp_row);
224 teken_assert(t->t_saved_cursor.tp_col < t->t_winsize.tp_col);
225 teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);
226 teken_assert(t->t_scrollreg.ts_begin < t->t_scrollreg.ts_end);
227 /* Origin region has to be window size or the same as scrollreg. */
228 teken_assert((t->t_originreg.ts_begin == t->t_scrollreg.ts_begin &&
229 t->t_originreg.ts_end == t->t_scrollreg.ts_end) ||
230 (t->t_originreg.ts_begin == 0 &&
231 t->t_originreg.ts_end == t->t_winsize.tp_row));
232}
233
234static void
235teken_input_byte(teken_t *t, unsigned char c)
236{
237
238 /*
239 * UTF-8 handling.
240 */
241 if ((c & 0x80) == 0x00 || t->t_stateflags & TS_8BIT) {
242 /* One-byte sequence. */
243 t->t_utf8_left = 0;
244 teken_input_char(t, c);
245 } else if ((c & 0xe0) == 0xc0) {
246 /* Two-byte sequence. */
247 t->t_utf8_left = 1;
248 t->t_utf8_partial = c & 0x1f;
249 } else if ((c & 0xf0) == 0xe0) {
250 /* Three-byte sequence. */
251 t->t_utf8_left = 2;
252 t->t_utf8_partial = c & 0x0f;
253 } else if ((c & 0xf8) == 0xf0) {
254 /* Four-byte sequence. */
255 t->t_utf8_left = 3;
256 t->t_utf8_partial = c & 0x07;
257 } else if ((c & 0xc0) == 0x80) {
258 if (t->t_utf8_left == 0)
259 return;
260 t->t_utf8_left--;
261 t->t_utf8_partial = (t->t_utf8_partial << 6) | (c & 0x3f);
262 if (t->t_utf8_left == 0) {
263 teken_printf("Got UTF-8 char %x\n", t->t_utf8_partial);
264 teken_input_char(t, t->t_utf8_partial);
265 }
266 }
267}
268
269void
270teken_input(teken_t *t, const void *buf, size_t len)
271{
272 const char *c = buf;
273
274 while (len-- > 0)
275 teken_input_byte(t, *c++);
276}
277
278const teken_pos_t *
279teken_get_cursor(teken_t *t)
280{
281
282 return (&t->t_cursor);
283}
284
285void
286teken_set_cursor(teken_t *t, const teken_pos_t *p)
287{
288
289 /* XXX: bounds checking with originreg! */
290 teken_assert(p->tp_row < t->t_winsize.tp_row);
291 teken_assert(p->tp_col < t->t_winsize.tp_col);
292
293 t->t_cursor = *p;
294}
295
296const teken_attr_t *
297teken_get_curattr(teken_t *t)
298{
299
300 return (&t->t_curattr);
301}
302
303void
304teken_set_curattr(teken_t *t, const teken_attr_t *a)
305{
306
307 t->t_curattr = *a;
308}
309
310const teken_attr_t *
311teken_get_defattr(teken_t *t)
312{
313
314 return (&t->t_defattr);
315}
316
317void
318teken_set_defattr(teken_t *t, const teken_attr_t *a)
319{
320
321 t->t_curattr = t->t_saved_curattr = t->t_defattr = *a;
322}
323
324const teken_pos_t *
325teken_get_winsize(teken_t *t)
326{
327
328 return (&t->t_winsize);
329}
330
331void
332teken_set_winsize(teken_t *t, const teken_pos_t *p)
333{
334
335 t->t_winsize = *p;
336 teken_subr_do_reset(t);
337}
338
339void
340teken_set_8bit(teken_t *t)
341{
342
343 t->t_stateflags |= TS_8BIT;
344}
345
346void
347teken_set_cons25(teken_t *t)
348{
349
350 t->t_stateflags |= TS_CONS25;
351}
352
353/*
354 * State machine.
355 */
356
357static void
358teken_state_switch(teken_t *t, teken_state_t *s)
359{
360
361 t->t_nextstate = s;
362 t->t_curnum = 0;
363 t->t_stateflags |= TS_FIRSTDIGIT;
364}
365
366static int
367teken_state_numbers(teken_t *t, teken_char_t c)
368{
369
370 teken_assert(t->t_curnum < T_NUMSIZE);
371
372 if (c >= '0' && c <= '9') {
373 /*
374 * Don't do math with the default value of 1 when a
375 * custom number is inserted.
376 */
377 if (t->t_stateflags & TS_FIRSTDIGIT) {
378 t->t_stateflags &= ~TS_FIRSTDIGIT;
379 t->t_nums[t->t_curnum] = 0;
380 } else {
381 t->t_nums[t->t_curnum] *= 10;
382 }
383
384 t->t_nums[t->t_curnum] += c - '0';
385 return (1);
386 } else if (c == ';') {
387 if (t->t_stateflags & TS_FIRSTDIGIT)
388 t->t_nums[t->t_curnum] = 0;
389
390 /* Only allow a limited set of arguments. */
391 if (++t->t_curnum == T_NUMSIZE) {
392 teken_state_switch(t, teken_state_init);
393 return (1);
394 }
395
396 t->t_stateflags |= TS_FIRSTDIGIT;
397 return (1);
398 } else {
399 if (t->t_stateflags & TS_FIRSTDIGIT && t->t_curnum > 0) {
400 /* Finish off the last empty argument. */
401 t->t_nums[t->t_curnum] = 0;
402 t->t_curnum++;
403 } else if ((t->t_stateflags & TS_FIRSTDIGIT) == 0) {
404 /* Also count the last argument. */
405 t->t_curnum++;
406 }
407 }
408
409 return (0);
410}
411
412#include "teken_state.h"
| 67static teken_state_t teken_state_init;
68
69/*
70 * Wrappers for hooks.
71 */
72
73static inline void
74teken_funcs_bell(teken_t *t)
75{
76
77 t->t_funcs->tf_bell(t->t_softc);
78}
79
80static inline void
81teken_funcs_cursor(teken_t *t)
82{
83
84 teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
85 teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
86
87 t->t_funcs->tf_cursor(t->t_softc, &t->t_cursor);
88}
89
90static inline void
91teken_funcs_putchar(teken_t *t, const teken_pos_t *p, teken_char_t c,
92 const teken_attr_t *a)
93{
94
95 teken_assert(p->tp_row < t->t_winsize.tp_row);
96 teken_assert(p->tp_col < t->t_winsize.tp_col);
97
98 t->t_funcs->tf_putchar(t->t_softc, p, c, a);
99}
100
101static inline void
102teken_funcs_fill(teken_t *t, const teken_rect_t *r,
103 const teken_char_t c, const teken_attr_t *a)
104{
105
106 teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
107 teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
108 teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
109 teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
110
111 t->t_funcs->tf_fill(t->t_softc, r, c, a);
112}
113
114static inline void
115teken_funcs_copy(teken_t *t, const teken_rect_t *r, const teken_pos_t *p)
116{
117
118 teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
119 teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
120 teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
121 teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
122 teken_assert(p->tp_row + (r->tr_end.tp_row - r->tr_begin.tp_row) <= t->t_winsize.tp_row);
123 teken_assert(p->tp_col + (r->tr_end.tp_col - r->tr_begin.tp_col) <= t->t_winsize.tp_col);
124
125 t->t_funcs->tf_copy(t->t_softc, r, p);
126}
127
128static inline void
129teken_funcs_param(teken_t *t, int cmd, unsigned int value)
130{
131
132 t->t_funcs->tf_param(t->t_softc, cmd, value);
133}
134
135static inline void
136teken_funcs_respond(teken_t *t, const void *buf, size_t len)
137{
138
139 t->t_funcs->tf_respond(t->t_softc, buf, len);
140}
141
142#include "teken_subr.h"
143#include "teken_subr_compat.h"
144
145/*
146 * Programming interface.
147 */
148
149void
150teken_init(teken_t *t, const teken_funcs_t *tf, void *softc)
151{
152 teken_pos_t tp = { .tp_row = 24, .tp_col = 80 };
153
154#if !(defined(__FreeBSD__) && defined(_KERNEL))
155 df = fopen("teken.log", "w");
156 if (df != NULL)
157 setvbuf(df, NULL, _IOLBF, BUFSIZ);
158#endif /* !(__FreeBSD__ && _KERNEL) */
159
160 t->t_funcs = tf;
161 t->t_softc = softc;
162
163 t->t_nextstate = teken_state_init;
164 t->t_stateflags = 0;
165 t->t_utf8_left = 0;
166
167 t->t_defattr.ta_format = 0;
168 t->t_defattr.ta_fgcolor = TC_WHITE;
169 t->t_defattr.ta_bgcolor = TC_BLACK;
170 teken_subr_do_reset(t);
171
172 teken_set_winsize(t, &tp);
173}
174
175static void
176teken_input_char(teken_t *t, teken_char_t c)
177{
178
179 switch (c) {
180 case '\0':
181 break;
182 case '\a':
183 teken_subr_bell(t);
184 break;
185 case '\b':
186 teken_subr_backspace(t);
187 break;
188 case '\n':
189 case '\x0B':
190 teken_subr_newline(t);
191 break;
192 case '\x0C':
193 teken_subr_newpage(t);
194 break;
195 case '\x0E':
196 if (t->t_stateflags & TS_CONS25)
197 t->t_nextstate(t, c);
198 else
199 teken_scs_switch(t, 1);
200 break;
201 case '\x0F':
202 if (t->t_stateflags & TS_CONS25)
203 t->t_nextstate(t, c);
204 else
205 teken_scs_switch(t, 0);
206 break;
207 case '\r':
208 teken_subr_carriage_return(t);
209 break;
210 case '\t':
211 teken_subr_horizontal_tab(t);
212 break;
213 default:
214 t->t_nextstate(t, c);
215 break;
216 }
217
218 /* Post-processing assertions. */
219 teken_assert(t->t_cursor.tp_row >= t->t_originreg.ts_begin);
220 teken_assert(t->t_cursor.tp_row < t->t_originreg.ts_end);
221 teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
222 teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
223 teken_assert(t->t_saved_cursor.tp_row < t->t_winsize.tp_row);
224 teken_assert(t->t_saved_cursor.tp_col < t->t_winsize.tp_col);
225 teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);
226 teken_assert(t->t_scrollreg.ts_begin < t->t_scrollreg.ts_end);
227 /* Origin region has to be window size or the same as scrollreg. */
228 teken_assert((t->t_originreg.ts_begin == t->t_scrollreg.ts_begin &&
229 t->t_originreg.ts_end == t->t_scrollreg.ts_end) ||
230 (t->t_originreg.ts_begin == 0 &&
231 t->t_originreg.ts_end == t->t_winsize.tp_row));
232}
233
234static void
235teken_input_byte(teken_t *t, unsigned char c)
236{
237
238 /*
239 * UTF-8 handling.
240 */
241 if ((c & 0x80) == 0x00 || t->t_stateflags & TS_8BIT) {
242 /* One-byte sequence. */
243 t->t_utf8_left = 0;
244 teken_input_char(t, c);
245 } else if ((c & 0xe0) == 0xc0) {
246 /* Two-byte sequence. */
247 t->t_utf8_left = 1;
248 t->t_utf8_partial = c & 0x1f;
249 } else if ((c & 0xf0) == 0xe0) {
250 /* Three-byte sequence. */
251 t->t_utf8_left = 2;
252 t->t_utf8_partial = c & 0x0f;
253 } else if ((c & 0xf8) == 0xf0) {
254 /* Four-byte sequence. */
255 t->t_utf8_left = 3;
256 t->t_utf8_partial = c & 0x07;
257 } else if ((c & 0xc0) == 0x80) {
258 if (t->t_utf8_left == 0)
259 return;
260 t->t_utf8_left--;
261 t->t_utf8_partial = (t->t_utf8_partial << 6) | (c & 0x3f);
262 if (t->t_utf8_left == 0) {
263 teken_printf("Got UTF-8 char %x\n", t->t_utf8_partial);
264 teken_input_char(t, t->t_utf8_partial);
265 }
266 }
267}
268
269void
270teken_input(teken_t *t, const void *buf, size_t len)
271{
272 const char *c = buf;
273
274 while (len-- > 0)
275 teken_input_byte(t, *c++);
276}
277
278const teken_pos_t *
279teken_get_cursor(teken_t *t)
280{
281
282 return (&t->t_cursor);
283}
284
285void
286teken_set_cursor(teken_t *t, const teken_pos_t *p)
287{
288
289 /* XXX: bounds checking with originreg! */
290 teken_assert(p->tp_row < t->t_winsize.tp_row);
291 teken_assert(p->tp_col < t->t_winsize.tp_col);
292
293 t->t_cursor = *p;
294}
295
296const teken_attr_t *
297teken_get_curattr(teken_t *t)
298{
299
300 return (&t->t_curattr);
301}
302
303void
304teken_set_curattr(teken_t *t, const teken_attr_t *a)
305{
306
307 t->t_curattr = *a;
308}
309
310const teken_attr_t *
311teken_get_defattr(teken_t *t)
312{
313
314 return (&t->t_defattr);
315}
316
317void
318teken_set_defattr(teken_t *t, const teken_attr_t *a)
319{
320
321 t->t_curattr = t->t_saved_curattr = t->t_defattr = *a;
322}
323
324const teken_pos_t *
325teken_get_winsize(teken_t *t)
326{
327
328 return (&t->t_winsize);
329}
330
331void
332teken_set_winsize(teken_t *t, const teken_pos_t *p)
333{
334
335 t->t_winsize = *p;
336 teken_subr_do_reset(t);
337}
338
339void
340teken_set_8bit(teken_t *t)
341{
342
343 t->t_stateflags |= TS_8BIT;
344}
345
346void
347teken_set_cons25(teken_t *t)
348{
349
350 t->t_stateflags |= TS_CONS25;
351}
352
353/*
354 * State machine.
355 */
356
357static void
358teken_state_switch(teken_t *t, teken_state_t *s)
359{
360
361 t->t_nextstate = s;
362 t->t_curnum = 0;
363 t->t_stateflags |= TS_FIRSTDIGIT;
364}
365
366static int
367teken_state_numbers(teken_t *t, teken_char_t c)
368{
369
370 teken_assert(t->t_curnum < T_NUMSIZE);
371
372 if (c >= '0' && c <= '9') {
373 /*
374 * Don't do math with the default value of 1 when a
375 * custom number is inserted.
376 */
377 if (t->t_stateflags & TS_FIRSTDIGIT) {
378 t->t_stateflags &= ~TS_FIRSTDIGIT;
379 t->t_nums[t->t_curnum] = 0;
380 } else {
381 t->t_nums[t->t_curnum] *= 10;
382 }
383
384 t->t_nums[t->t_curnum] += c - '0';
385 return (1);
386 } else if (c == ';') {
387 if (t->t_stateflags & TS_FIRSTDIGIT)
388 t->t_nums[t->t_curnum] = 0;
389
390 /* Only allow a limited set of arguments. */
391 if (++t->t_curnum == T_NUMSIZE) {
392 teken_state_switch(t, teken_state_init);
393 return (1);
394 }
395
396 t->t_stateflags |= TS_FIRSTDIGIT;
397 return (1);
398 } else {
399 if (t->t_stateflags & TS_FIRSTDIGIT && t->t_curnum > 0) {
400 /* Finish off the last empty argument. */
401 t->t_nums[t->t_curnum] = 0;
402 t->t_curnum++;
403 } else if ((t->t_stateflags & TS_FIRSTDIGIT) == 0) {
404 /* Also count the last argument. */
405 t->t_curnum++;
406 }
407 }
408
409 return (0);
410}
411
412#include "teken_state.h"
|