Outline ![]()
Files ![]()
loading...
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
/*
* Implements the internals of the format command for jim
*
* The FreeBSD license
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the Jim Tcl Project.
*
* Based on code originally from Tcl 8.5:
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc.
* Copyright (c) 1999 by Scriptics Corporation.
*
* See the file "tcl.license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include <ctype.h>
#include <string.h>
#include <jim.h>
#include "utf8.h"
#define JIM_INTEGER_SPACE 24
#define MAX_FLOAT_WIDTH 320
/**
* Apply the printf-like format in fmtObjPtr with the given arguments.
*
* Returns a new object with zero reference count if OK, or NULL on error.
*/
Jim_Obj *Jim_FormatString(Jim_Interp *interp, Jim_Obj *fmtObjPtr, int objc, Jim_Obj *const *objv)
{
const char *span, *format, *formatEnd, *msg;
int numBytes = 0, objIndex = 0, gotXpg = 0, gotSequential = 0;
static const char * const mixedXPG =
"cannot mix \"%\" and \"%n$\" conversion specifiers";
static const char * const badIndex[2] = {
"not enough arguments for all format specifiers",
"\"%n$\" argument index out of range"
};
int formatLen;
Jim_Obj *resultPtr;
/* A single buffer is used to store numeric fields (with sprintf())
* This buffer is allocated/reallocated as necessary
*/
char *num_buffer = NULL;
int num_buffer_size = 0;
span = format = Jim_GetString(fmtObjPtr, &formatLen);
formatEnd = format + formatLen;
resultPtr = Jim_NewEmptyStringObj(interp);
while (format != formatEnd) {
char *end;
int gotMinus, sawFlag;
int gotPrecision, useShort;
long width, precision;
int newXpg;
int ch;
int step;
int doubleType;
char pad = ' ';
char spec[2*JIM_INTEGER_SPACE + 12];
char *p;
int formatted_chars;
int formatted_bytes;
const char *formatted_buf;
step = utf8_tounicode(format, &ch);
format += step;
if (ch != '%') {
numBytes += step;
continue;
}
if (numBytes) {
Jim_AppendString(interp, resultPtr, span, numBytes);
numBytes = 0;
}
/*
* Saw a % : process the format specifier.
*
* Step 0. Handle special case of escaped format marker (i.e., %%).
*/
step = utf8_tounicode(format, &ch);
if (ch == '%') {
span = format;
numBytes = step;
format += step;
continue;
}
/*
* Step 1. XPG3 position specifier
*/
newXpg = 0;
if (isdigit(ch)) {
int position = strtoul(format, &end, 10);
if (*end == '$') {
newXpg = 1;
objIndex = position - 1;
format = end + 1;
step = utf8_tounicode(format, &ch);
}
}
if (newXpg) {
if (gotSequential) {
msg = mixedXPG;
goto errorMsg;
}
gotXpg = 1;
} else {
if (gotXpg) {
msg = mixedXPG;
goto errorMsg;
}
gotSequential = 1;
}
if ((objIndex < 0) || (objIndex >= objc)) {
msg = badIndex[gotXpg];
goto errorMsg;
}
/*
* Step 2. Set of flags. Also build up the sprintf spec.
*/
p = spec;
*p++ = '%';
gotMinus = 0;
sawFlag = 1;
do {
switch (ch) {
case '-':
gotMinus = 1;
break;
case '0':
pad = ch;
break;
case ' ':
case '+':
case '#':
break;
default:
sawFlag = 0;
continue;
}
*p++ = ch;
format += step;
step = utf8_tounicode(format, &ch);
/* Only allow one of each flag, so if we have more than 5 flags, stop */
} while (sawFlag && (p - spec <= 5));
/*
* Step 3. Minimum field width.
*/
width = 0;
if (isdigit(ch)) {
width = strtoul(format, &end, 10);
format = end;
step = utf8_tounicode(format, &ch);
} else if (ch == '*') {
if (objIndex >= objc - 1) {
msg = badIndex[gotXpg];
goto errorMsg;
}
if (Jim_GetLong(interp, objv[objIndex], &width) != JIM_OK) {
goto error;
}
if (width < 0) {
width = -width;
if (!gotMinus) {
*p++ = '-';
gotMinus = 1;
}
}
objIndex++;
format += step;
step = utf8_tounicode(format, &ch);
}
/*
* Step 4. Precision.
*/
gotPrecision = precision = 0;
if (ch == '.') {
gotPrecision = 1;
format += step;
step = utf8_tounicode(format, &ch);
}
if (isdigit(ch)) {
precision = strtoul(format, &end, 10);
format = end;
step = utf8_tounicode(format, &ch);
} else if (ch == '*') {
if (objIndex >= objc - 1) {
msg = badIndex[gotXpg];
goto errorMsg;
}
if (Jim_GetLong(interp, objv[objIndex], &precision) != JIM_OK) {
goto error;
}
/*
* TODO: Check this truncation logic.
*/
if (precision < 0) {
precision = 0;
}
objIndex++;
format += step;
step = utf8_tounicode(format, &ch);
}
/*
* Step 5. Length modifier.
*/
useShort = 0;
if (ch == 'h') {
useShort = 1;
format += step;
step = utf8_tounicode(format, &ch);
} else if (ch == 'l') {
/* Just for compatibility. All non-short integers are wide. */
format += step;
step = utf8_tounicode(format, &ch);
if (ch == 'l') {
format += step;
step = utf8_tounicode(format, &ch);
}
}
format += step;
span = format;
/*
* Step 6. The actual conversion character.
*/
if (ch == 'i') {
ch = 'd';
}
doubleType = 0;
/* Each valid conversion will set:
* formatted_buf - the result to be added
* formatted_chars - the length of formatted_buf in characters
* formatted_bytes - the length of formatted_buf in bytes
*/
switch (ch) {
case '\0':
msg = "format string ended in middle of field specifier";
goto errorMsg;
case 's': {
formatted_buf = Jim_GetString(objv[objIndex], &formatted_bytes);
formatted_chars = Jim_Utf8Length(interp, objv[objIndex]);
if (gotPrecision && (precision < formatted_chars)) {
/* Need to build a (null terminated) truncated string */
formatted_chars = precision;
formatted_bytes = utf8_index(formatted_buf, precision);
}
break;
}
case 'c': {
jim_wide code;
if (Jim_GetWide(interp, objv[objIndex], &code) != JIM_OK) {
goto error;
}
/* Just store the value in the 'spec' buffer */
formatted_bytes = utf8_getchars(spec, code);
formatted_buf = spec;
formatted_chars = 1;
break;
}
case 'b': {
unsigned jim_wide w;
int length;
int i;
int j;
if (Jim_GetWide(interp, objv[objIndex], (jim_wide *)&w) != JIM_OK) {
goto error;
}
length = sizeof(w) * 8;
/* XXX: width and precision not yet implemented for binary
* also flags in 'spec', e.g. #, 0, -
*/
/* Increase the size of the buffer if needed */
if (num_buffer_size < length + 1) {
num_buffer_size = length + 1;
num_buffer = Jim_Realloc(num_buffer, num_buffer_size);
}
j = 0;
for (i = length; i > 0; ) {
i--;
if (w & ((unsigned jim_wide)1 << i)) {
num_buffer[j++] = '1';
}
else if (j || i == 0) {
num_buffer[j++] = '0';
}
}
num_buffer[j] = 0;
formatted_chars = formatted_bytes = j;
formatted_buf = num_buffer;
break;
}
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
doubleType = 1;
/* fall through */
case 'd':
case 'u':
case 'o':
case 'x':
case 'X': {
jim_wide w;
double d;
int length;
/* Fill in the width and precision */
if (width) {
p += sprintf(p, "%ld", width);
}
if (gotPrecision) {
p += sprintf(p, ".%ld", precision);
}
/* Now the modifier, and get the actual value here */
if (doubleType) {
if (Jim_GetDouble(interp, objv[objIndex], &d) != JIM_OK) {
goto error;
}
length = MAX_FLOAT_WIDTH;
}
else {
if (Jim_GetWide(interp, objv[objIndex], &w) != JIM_OK) {
goto error;
}
length = JIM_INTEGER_SPACE;
if (useShort) {
if (ch == 'd') {
w = (short)w;
}
else {
w = (unsigned short)w;
}
}
*p++ = 'l';
#ifdef HAVE_LONG_LONG
if (sizeof(long long) == sizeof(jim_wide)) {
*p++ = 'l';
}
#endif
}
*p++ = (char) ch;
*p = '\0';
/* Put some reasonable limits on the field size */
if (width > 10000 || length > 10000 || precision > 10000) {
Jim_SetResultString(interp, "format too long", -1);
goto error;
}
/* Adjust length for width and precision */
if (width > length) {
length = width;
}
if (gotPrecision) {
length += precision;
}
/* Increase the size of the buffer if needed */
if (num_buffer_size < length + 1) {
num_buffer_size = length + 1;
num_buffer = Jim_Realloc(num_buffer, num_buffer_size);
}
if (doubleType) {
snprintf(num_buffer, length + 1, spec, d);
}
else {
formatted_bytes = snprintf(num_buffer, length + 1, spec, w);
}
formatted_chars = formatted_bytes = strlen(num_buffer);
formatted_buf = num_buffer;
break;
}
default: {
/* Just reuse the 'spec' buffer */
spec[0] = ch;
spec[1] = '\0';
Jim_SetResultFormatted(interp, "bad field specifier \"%s\"", spec);
goto error;
}
}
if (!gotMinus) {
while (formatted_chars < width) {
Jim_AppendString(interp, resultPtr, &pad, 1);
formatted_chars++;
}
}
Jim_AppendString(interp, resultPtr, formatted_buf, formatted_bytes);
while (formatted_chars < width) {
Jim_AppendString(interp, resultPtr, &pad, 1);
formatted_chars++;
}
objIndex += gotSequential;
}
if (numBytes) {
Jim_AppendString(interp, resultPtr, span, numBytes);
}
Jim_Free(num_buffer);
return resultPtr;
errorMsg:
Jim_SetResultString(interp, msg, -1);
error:
Jim_FreeNewObj(interp, resultPtr);
Jim_Free(num_buffer);
return NULL;
}
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
Click anywhere in the source to view detailed information here...