-
Notifications
You must be signed in to change notification settings - Fork 508
Expand file tree
/
Copy pathformat_print.c
More file actions
690 lines (623 loc) · 15.5 KB
/
format_print.c
File metadata and controls
690 lines (623 loc) · 15.5 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
/*
* Copyright 2008-2013 Various Authors
* Copyright 2004 Timo Hirvonen
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "format_print.h"
#include "expr.h"
#include "glob.h"
#include "utils.h"
#include "options.h"
#include "uchar.h"
#include "xmalloc.h"
#include "debug.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
static int width;
static int align_left;
static int pad;
static bool width_is_exact;
static GBUF(cond_buffer);
static GBUF(l_str);
static GBUF(m_str);
static GBUF(r_str);
static struct fp_len str_len = {0, 0, 0};
static int *len = &str_len.llen;
static struct gbuf* str = &l_str;
static void stack_print(char *stack, int stack_len)
{
int i = 0;
gbuf_grow(str, width ? width : stack_len);
char* buf = str->buffer + str->len;
if (width) {
if (align_left) {
while (i < width && stack_len)
buf[i++] = stack[--stack_len];
while (i < width)
buf[i++] = pad;
} else {
int pad_len;
if (stack_len > width)
stack_len = width;
pad_len = width - stack_len;
while (i < pad_len)
buf[i++] = pad;
while (i < width)
buf[i++] = stack[--stack_len];
}
} else {
while (stack_len)
buf[i++] = stack[--stack_len];
}
gbuf_used(str, i);
*len += i;
}
static void print_num(int num)
{
char stack[20];
int i, p;
if (num < 0) {
if (width == 0)
width = 1;
for (i = 0; i < width; i++)
gbuf_add_ch(str, '?');
*len += width;
return;
}
p = 0;
do {
stack[p++] = num % 10 + '0';
num /= 10;
} while (num);
stack_print(stack, p);
}
#define DBL_MAX_LEN (20)
static void print_double(double num)
{
char stack[DBL_MAX_LEN], b[DBL_MAX_LEN];
int i, p = 0;
i = snprintf(b, DBL_MAX_LEN, "%g", num) - 1;
while (i >= 0) {
stack[p++] = b[i];
i--;
}
stack_print(stack, p);
}
/* print '{,-}{h:,}mm:ss' */
static void print_time(int t)
{
int h, m, s;
char stack[32];
int neg = 0;
int p = 0;
if (t < 0) {
neg = 1;
t *= -1;
}
h = t / 3600;
t = t % 3600;
m = t / 60;
s = t % 60;
/* put all chars to stack in reverse order ;) */
stack[p++] = s % 10 + '0';
stack[p++] = s / 10 + '0';
stack[p++] = ':';
stack[p++] = m % 10 + '0';
if (m / 10 || h || time_show_leading_zero)
stack[p++] = m / 10 + '0';
if (h) {
stack[p++] = ':';
do {
stack[p++] = h % 10 + '0';
h /= 10;
} while (h);
}
if (neg)
stack[p++] = '-';
stack_print(stack, p);
}
static void print_str(const char *src)
{
int str_width = u_str_width(src);
if (width && width_is_exact) {
*len += width;
if (align_left) {
gbuf_add_ustr(str, src, &width);
gbuf_set(str, ' ', width);
} else {
int s = 0;
int ws_len = width - str_width;
if (ws_len < 0) {
int skip = -ws_len;
int clipped_mark_len = min_u(u_str_width(clipped_text_internal), width);
skip += clipped_mark_len;
gbuf_add_ustr(str, clipped_text_internal, &clipped_mark_len);
s = u_skip_chars(src, &skip, true);
/* pad if a wide character caused us to skip too much */
ws_len = -skip;
}
gbuf_set(str, ' ', ws_len);
gbuf_add_ustr(str, src + s, &width);
}
} else {
if (!width)
width = str_width;
*len += width;
gbuf_add_ustr(str, src, &width);
*len -= width;
}
}
static inline int strnequal(const char *a, const char *b, size_t b_len)
{
return a && (strlen(a) == b_len) && (memcmp(a, b, b_len) == 0);
}
static const struct format_option *find_fopt(const struct format_option *fopts, const char *key)
{
const struct format_option *fo;
char ch = strlen(key) == 1 ? *key : 0;
for (fo = fopts; fo->type != 0; fo++) {
if ((ch != 0 && fo->ch == ch) || strnequal(fo->str, key, strlen(key))) {
return fo;
}
}
return NULL;
}
static const char *str_val(const char *key, const struct format_option *fopts, char *buf)
{
const struct format_option *fo;
const struct cmus_opt *opt;
const char *val = NULL;
fo = find_fopt(fopts, key);
if (fo && !fo->empty) {
if (fo->type == FO_STR)
val = fo->fo_str;
} else {
opt = option_find_silent(key);
if (opt) {
opt->get(opt->data, buf, OPTION_MAX_SIZE);
val = buf;
}
}
return val;
}
static int int_val(const char *key, const struct format_option *fopts, char *buf)
{
const struct format_option *fo;
int val = -1;
fo = find_fopt(fopts, key);
if (fo && !fo->empty) {
if (fo->type == FO_INT)
val = fo->fo_int;
}
return val;
}
static int format_eval_cond(struct expr* expr, const struct format_option *fopts)
{
if (!expr)
return -1;
enum expr_type type = expr->type;
const char *key;
const struct format_option *fo;
const struct cmus_opt *opt;
char buf[OPTION_MAX_SIZE];
if (expr->left) {
int left = format_eval_cond(expr->left, fopts);
if (type == EXPR_AND)
return left && format_eval_cond(expr->right, fopts);
if (type == EXPR_OR)
return left || format_eval_cond(expr->right, fopts);
/* EXPR_NOT */
return !left;
}
key = expr->key;
if (type == EXPR_STR) {
const char *val = str_val(key, fopts, buf);
int res;
if (!val)
val = "";
res = glob_match(&expr->estr.glob_head, val);
if (expr->estr.op == SOP_EQ)
return res;
return !res;
} else if (type == EXPR_INT) {
int val = int_val(key, fopts, buf);
int res = val - expr->eint.val;
if (val == -1 || expr->eint.val == -1) {
switch (expr->eid.op) {
case KOP_EQ:
return res == 0;
case KOP_NE:
return res != 0;
default:
return 0;
}
}
return expr_op_to_bool(res, expr->eint.op);
} else if (type == EXPR_ID) {
int a = 0, b = 0;
const char *sa, *sb;
int res = 0;
if ((sa = str_val(key, fopts, buf)) && (sb = str_val(expr->eid.key, fopts, buf))) {
res = strcmp(sa, sb);
return expr_op_to_bool(res, expr->eid.op);
} else {
a = int_val(key, fopts, buf);
b = int_val(expr->eid.key, fopts, buf);
res = a - b;
if (a == -1 || b == -1) {
switch (expr->eid.op) {
case KOP_EQ:
return res == 0;
case KOP_NE:
return res != 0;
default:
return 0;
}
}
return expr_op_to_bool(res, expr->eid.op);
}
return res;
}
if (strcmp(key, "stream") == 0) {
fo = find_fopt(fopts, "filename");
return fo && is_http_url(fo->fo_str);
}
fo = find_fopt(fopts, key);
if (fo)
return !fo->empty;
opt = option_find_silent(key);
if (opt) {
opt->get(opt->data, buf, OPTION_MAX_SIZE);
if (strcmp(buf, "false") != 0 && strlen(buf) != 0)
return 1;
}
return 0;
}
static struct expr *format_parse_cond(const char* format, int size)
{
gbuf_clear(&cond_buffer);
gbuf_add_bytes(&cond_buffer, format, size);
return expr_parse_i(cond_buffer.buffer, "condition contains control characters", 0);
}
static uchar format_skip_cond_expr(const char *format, int *s)
{
uchar r = 0;
while (format[*s]) {
uchar u = u_get_char(format, s);
if (u == '}' || u == '?') {
return u;
}
if (u != '%') {
continue;
}
u = u_get_char(format, s);
if (u == '%' || u == '?' || u == '!' || u == '=') {
continue;
}
if (u == '-') {
u = u_get_char(format, s);
}
if (u == '.')
u = u_get_char(format, s);
while (isdigit(u)) {
u = u_get_char(format, s);
}
if (u == '{') {
unsigned level = 1;
while (level) {
u = u_get_char(format, s);
if (u == 0)
return 0;
if (u == '}')
--level;
if (u != '%')
continue;
u = u_get_char(format, s);
if (u == '%' || u == '?' || u == '!' || u == '=')
continue;
if (u == '-')
u = u_get_char(format, s);
if (u == '.')
u = u_get_char(format, s);
while (isdigit(u))
u = u_get_char(format, s);
if (u == 0)
return 0;
if (u == '{')
++level;
}
}
}
return r;
}
static int format_read_cond(const char *format, int *s, int *a, int *b, int *end)
{
uchar t = format_skip_cond_expr(format, s);
if (t != '?')
return 1;
*a = *s - 1;
t = format_skip_cond_expr(format, s);
if (t == 0)
return 1;
if (t == '?') {
*b = *s - 1;
t = format_skip_cond_expr(format, s);
if (t != '}')
return 1;
}
*end = *s - 1;
return 0;
}
static void format_parse(int str_width, const char *format, const struct format_option *fopts, int f_size);
static void format_parse_if(int str_width, const char *format, const struct format_option *fopts, int *s)
{
int cond_pos = *s, then_pos = -1, else_pos = -1, end_pos = -1, cond_res = -1;
BUG_ON(format_read_cond(format, s, &then_pos, &else_pos, &end_pos) != 0);
struct expr *cond = format_parse_cond(format + cond_pos, then_pos - cond_pos);
cond_res = format_eval_cond(cond, fopts);
if (cond)
expr_free(cond);
BUG_ON(cond_res < 0);
if (cond_res) {
format_parse(str_width, format + then_pos + 1, fopts,
(else_pos > 0 ? else_pos : end_pos) - then_pos - 1);
} else if (else_pos > 0) {
format_parse(str_width, format + else_pos + 1, fopts, end_pos - else_pos - 1);
}
*s = end_pos + 1;
}
static void format_parse(int str_width, const char *format, const struct format_option *fopts, int f_size)
{
int s = 0;
while (s < f_size) {
const struct format_option *fo;
int long_len = 0;
const char *long_begin = NULL;
uchar u;
u = u_get_char(format, &s);
if (u != '%') {
gbuf_add_uchar(str, u);
(*len) += u_char_width(u);
continue;
}
u = u_get_char(format, &s);
if (u == '%' || u == '?') {
gbuf_add_ch(str, u);
++(*len);
continue;
}
if (u == '!') {
/* middle (priority) text starts */
str = &m_str;
len = &str_len.mlen;
continue;
}
if (u == '=') {
/* right aligned text starts */
str = &r_str;
len = &str_len.rlen;
continue;
}
align_left = 0;
if (u == '-') {
align_left = 1;
u = u_get_char(format, &s);
}
width_is_exact = true;
if (u == '.') {
width_is_exact = false;
u = u_get_char(format, &s);
}
pad = ' ';
if (u == '0') {
pad = '0';
u = u_get_char(format, &s);
}
width = 0;
while (isdigit(u)) {
/* minimum length of this field */
width *= 10;
width += u - '0';
u = u_get_char(format, &s);
}
if (u == '%') {
width = (width * str_width) / 100.0 + 0.5;
u = u_get_char(format, &s);
}
if (u == '{') {
long_begin = format + s;
if (*long_begin == '?') {
++s;
format_parse_if(str_width, format, fopts, &s);
BUG_ON(s > f_size);
continue;
}
while (1) {
BUG_ON(s >= f_size);
u = u_get_char(format, &s);
if (u == '}')
break;
long_len++;
}
}
for (fo = fopts; ; fo++) {
BUG_ON(fo->type == 0);
if (long_len ? strnequal(fo->str, long_begin, long_len)
: (fo->ch == u)) {
int type = fo->type;
if (fo->empty) {
gbuf_set(str, ' ', width);
*len += width;
} else if (type == FO_STR) {
print_str(fo->fo_str);
} else if (type == FO_INT) {
print_num(fo->fo_int);
} else if (type == FO_TIME) {
print_time(fo->fo_time);
} else if (type == FO_DOUBLE) {
print_double(fo->fo_double);
}
break;
}
}
}
}
static void format_read(int str_width, const char *format, const struct format_option *fopts)
{
gbuf_clear(&l_str);
gbuf_clear(&m_str);
gbuf_clear(&r_str);
str_len.llen = 0;
str_len.mlen = 0;
str_len.rlen = 0;
str = &l_str;
len = &str_len.llen;
format_parse(str_width, format, fopts, strlen(format));
}
static void format_write(struct gbuf *buf, int str_width)
{
if (str_width == 0)
str_width = str_len.llen + str_len.mlen + str_len.rlen + (str_len.rlen > 0);
/* NOTE: any invalid UTF-8 bytes have already been converted to <xx>
* (ASCII) where x is hex digit
*/
if (str_len.llen + str_len.mlen + str_len.rlen <= str_width) {
/* all fit */
int ws_len = str_width - (str_len.llen + str_len.mlen + str_len.rlen);
gbuf_add_bytes(buf, l_str.buffer, l_str.len);
gbuf_add_bytes(buf, m_str.buffer, m_str.len);
gbuf_set(buf, ' ', ws_len);
gbuf_add_bytes(buf, r_str.buffer, r_str.len);
} else {
/* keep first character since it's almost always padding */
int clipped_mark_len = min_u(u_str_width(clipped_text_internal) + 1, str_width);
int r_space = str_width - clipped_mark_len;
int r_width = min_i(r_space, str_len.rlen);
int m_space = r_space - r_width;
int m_width = min_i(m_space, str_len.mlen);
int l_space = m_space - m_width;
int l_width = l_space + clipped_mark_len;
int r_idx = 0, ws_pad = 0;
gbuf_add_ustr(buf, l_str.buffer, &l_width);
ws_pad += l_width;
gbuf_add_ustr(buf, m_str.buffer, &m_width);
ws_pad += m_width;
int r_skip = str_len.rlen - r_width;
r_idx = u_skip_chars(r_str.buffer, &r_skip, true);
ws_pad += -r_skip;
gbuf_set(buf, ' ', ws_pad);
gbuf_add_bytes(buf, r_str.buffer + r_idx, r_str.len - r_idx);
}
}
struct fp_len format_print(struct gbuf *buf, int str_width, const char *format, const struct format_option *fopts)
{
format_read(str_width, format, fopts);
#if DEBUG > 1
if (str_len.llen > 0) {
int ul = u_str_width(l_str.buffer);
if (ul != str_len.llen)
d_print("L %d != %d: size=%zu '%s'\n", ul, str_len.llen, l_str.len, l_str.buffer);
}
if (str_len.rlen > 0) {
int ul = u_str_width(r_str.buffer);
if (ul != str_len.rlen)
d_print("R %d != %d: size=%zu '%s'\n", ul, str_len.rlen, r_str.len, r_str.buffer);
}
#endif
format_write(buf, str_width);
return str_len;
}
static int format_valid_sub(const char *format, const struct format_option *fopts, int f_size);
static int format_valid_if(const char *format, const struct format_option *fopts, int *s)
{
int cond_pos = *s, then_pos = -1, else_pos = -1, end_pos = -1;
if (format_read_cond(format, s, &then_pos, &else_pos, &end_pos) != 0)
return 0;
struct expr *cond = format_parse_cond(format + cond_pos, then_pos - cond_pos);
if (cond == NULL)
return 0;
expr_free(cond);
if (!format_valid_sub(format + then_pos + 1, fopts,
(else_pos > 0 ? else_pos : end_pos) - then_pos - 1))
return 0;
if (else_pos > 0)
if (!format_valid_sub(format + else_pos + 1, fopts, end_pos - else_pos - 1))
return 0;
*s = end_pos + 1;
return 1;
}
static int format_valid_sub(const char *format, const struct format_option *fopts, int f_size)
{
int s = 0;
while (s < f_size) {
uchar u;
u = u_get_char(format, &s);
if (u == '%') {
int pad_zero = 0, long_len = 0;
const struct format_option *fo;
const char *long_begin = NULL;
u = u_get_char(format, &s);
if (u == '%' || u == '?' || u == '!' || u == '=')
continue;
if (u == '-')
u = u_get_char(format, &s);
if (u == '.')
u = u_get_char(format, &s);
if (u == '0') {
pad_zero = 1;
u = u_get_char(format, &s);
}
while (isdigit(u))
u = u_get_char(format, &s);
if (u == '%')
u = u_get_char(format, &s);
if (u == '{') {
long_begin = format + s;
if (*long_begin == '?') {
++s;
if (!format_valid_if(format, fopts, &s))
return 0;
if (s > f_size)
return 0;
continue;
}
while (1) {
if (s >= f_size)
return 0;
u = u_get_char(format, &s);
if (u == '}')
break;
long_len++;
}
}
for (fo = fopts; fo->type; fo++) {
if (long_len ? strnequal(fo->str, long_begin, long_len)
: (fo->ch == u)) {
if (pad_zero && !fo->pad_zero)
return 0;
break;
}
}
if (! fo->type)
return 0;
}
}
return 1;
}
int format_valid(const char *format, const struct format_option *fopts)
{
return format_valid_sub(format, fopts, strlen(format));
}