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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <ctype.h> | |
22 | #include <stdint.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <strings.h> | |
26 | #include <errno.h> | |
27 | #include <stdbool.h> | |
28 | #include <libsigrok/libsigrok.h> | |
29 | #include "libsigrok-internal.h" | |
30 | ||
31 | /** @cond PRIVATE */ | |
32 | #define LOG_PREFIX "strutil" | |
33 | /** @endcond */ | |
34 | ||
35 | /** | |
36 | * @file | |
37 | * | |
38 | * Helper functions for handling or converting libsigrok-related strings. | |
39 | */ | |
40 | ||
41 | /** | |
42 | * @defgroup grp_strutil String utilities | |
43 | * | |
44 | * Helper functions for handling or converting libsigrok-related strings. | |
45 | * | |
46 | * @{ | |
47 | */ | |
48 | ||
49 | /** | |
50 | * @private | |
51 | * | |
52 | * Convert a string representation of a numeric value (base 10) to a long integer. The | |
53 | * conversion is strict and will fail if the complete string does not represent | |
54 | * a valid long integer. The function sets errno according to the details of the | |
55 | * failure. | |
56 | * | |
57 | * @param str The string representation to convert. | |
58 | * @param ret Pointer to long where the result of the conversion will be stored. | |
59 | * | |
60 | * @retval SR_OK Conversion successful. | |
61 | * @retval SR_ERR Failure. | |
62 | */ | |
63 | SR_PRIV int sr_atol(const char *str, long *ret) | |
64 | { | |
65 | long tmp; | |
66 | char *endptr = NULL; | |
67 | ||
68 | errno = 0; | |
69 | tmp = strtol(str, &endptr, 10); | |
70 | ||
71 | while (endptr && isspace(*endptr)) | |
72 | endptr++; | |
73 | ||
74 | if (!endptr || *endptr || errno) { | |
75 | if (!errno) | |
76 | errno = EINVAL; | |
77 | return SR_ERR; | |
78 | } | |
79 | ||
80 | *ret = tmp; | |
81 | return SR_OK; | |
82 | } | |
83 | ||
84 | /** | |
85 | * @private | |
86 | * | |
87 | * Convert a string representation of a numeric value (base 10) to an integer. The | |
88 | * conversion is strict and will fail if the complete string does not represent | |
89 | * a valid integer. The function sets errno according to the details of the | |
90 | * failure. | |
91 | * | |
92 | * @param str The string representation to convert. | |
93 | * @param ret Pointer to int where the result of the conversion will be stored. | |
94 | * | |
95 | * @retval SR_OK Conversion successful. | |
96 | * @retval SR_ERR Failure. | |
97 | */ | |
98 | SR_PRIV int sr_atoi(const char *str, int *ret) | |
99 | { | |
100 | long tmp; | |
101 | ||
102 | if (sr_atol(str, &tmp) != SR_OK) | |
103 | return SR_ERR; | |
104 | ||
105 | if ((int) tmp != tmp) { | |
106 | errno = ERANGE; | |
107 | return SR_ERR; | |
108 | } | |
109 | ||
110 | *ret = (int) tmp; | |
111 | return SR_OK; | |
112 | } | |
113 | ||
114 | /** | |
115 | * @private | |
116 | * | |
117 | * Convert a string representation of a numeric value to a double. The | |
118 | * conversion is strict and will fail if the complete string does not represent | |
119 | * a valid double. The function sets errno according to the details of the | |
120 | * failure. | |
121 | * | |
122 | * @param str The string representation to convert. | |
123 | * @param ret Pointer to double where the result of the conversion will be stored. | |
124 | * | |
125 | * @retval SR_OK Conversion successful. | |
126 | * @retval SR_ERR Failure. | |
127 | */ | |
128 | SR_PRIV int sr_atod(const char *str, double *ret) | |
129 | { | |
130 | double tmp; | |
131 | char *endptr = NULL; | |
132 | ||
133 | errno = 0; | |
134 | tmp = strtof(str, &endptr); | |
135 | ||
136 | while (endptr && isspace(*endptr)) | |
137 | endptr++; | |
138 | ||
139 | if (!endptr || *endptr || errno) { | |
140 | if (!errno) | |
141 | errno = EINVAL; | |
142 | return SR_ERR; | |
143 | } | |
144 | ||
145 | *ret = tmp; | |
146 | return SR_OK; | |
147 | } | |
148 | ||
149 | /** | |
150 | * @private | |
151 | * | |
152 | * Convert a string representation of a numeric value to a float. The | |
153 | * conversion is strict and will fail if the complete string does not represent | |
154 | * a valid float. The function sets errno according to the details of the | |
155 | * failure. | |
156 | * | |
157 | * @param str The string representation to convert. | |
158 | * @param ret Pointer to float where the result of the conversion will be stored. | |
159 | * | |
160 | * @retval SR_OK Conversion successful. | |
161 | * @retval SR_ERR Failure. | |
162 | */ | |
163 | SR_PRIV int sr_atof(const char *str, float *ret) | |
164 | { | |
165 | double tmp; | |
166 | ||
167 | if (sr_atod(str, &tmp) != SR_OK) | |
168 | return SR_ERR; | |
169 | ||
170 | if ((float) tmp != tmp) { | |
171 | errno = ERANGE; | |
172 | return SR_ERR; | |
173 | } | |
174 | ||
175 | *ret = (float) tmp; | |
176 | return SR_OK; | |
177 | } | |
178 | ||
179 | /** | |
180 | * @private | |
181 | * | |
182 | * Convert a string representation of a numeric value to a double. The | |
183 | * conversion is strict and will fail if the complete string does not represent | |
184 | * a valid double. The function sets errno according to the details of the | |
185 | * failure. This version ignores the locale. | |
186 | * | |
187 | * @param str The string representation to convert. | |
188 | * @param ret Pointer to double where the result of the conversion will be stored. | |
189 | * | |
190 | * @retval SR_OK Conversion successful. | |
191 | * @retval SR_ERR Failure. | |
192 | */ | |
193 | SR_PRIV int sr_atod_ascii(const char *str, double *ret) | |
194 | { | |
195 | double tmp; | |
196 | char *endptr = NULL; | |
197 | ||
198 | errno = 0; | |
199 | tmp = g_ascii_strtod(str, &endptr); | |
200 | ||
201 | if (!endptr || *endptr || errno) { | |
202 | if (!errno) | |
203 | errno = EINVAL; | |
204 | return SR_ERR; | |
205 | } | |
206 | ||
207 | *ret = tmp; | |
208 | return SR_OK; | |
209 | } | |
210 | ||
211 | /** | |
212 | * @private | |
213 | * | |
214 | * Convert a string representation of a numeric value to a float. The | |
215 | * conversion is strict and will fail if the complete string does not represent | |
216 | * a valid float. The function sets errno according to the details of the | |
217 | * failure. This version ignores the locale. | |
218 | * | |
219 | * @param str The string representation to convert. | |
220 | * @param ret Pointer to float where the result of the conversion will be stored. | |
221 | * | |
222 | * @retval SR_OK Conversion successful. | |
223 | * @retval SR_ERR Failure. | |
224 | */ | |
225 | SR_PRIV int sr_atof_ascii(const char *str, float *ret) | |
226 | { | |
227 | double tmp; | |
228 | char *endptr = NULL; | |
229 | ||
230 | errno = 0; | |
231 | tmp = g_ascii_strtod(str, &endptr); | |
232 | ||
233 | if (!endptr || *endptr || errno) { | |
234 | if (!errno) | |
235 | errno = EINVAL; | |
236 | return SR_ERR; | |
237 | } | |
238 | ||
239 | /* FIXME This fails unexpectedly. Some other method to safel downcast | |
240 | * needs to be found. Checking against FLT_MAX doesn't work as well. */ | |
241 | /* | |
242 | if ((float) tmp != tmp) { | |
243 | errno = ERANGE; | |
244 | sr_dbg("ERANGEEEE %e != %e", (float) tmp, tmp); | |
245 | return SR_ERR; | |
246 | } | |
247 | */ | |
248 | ||
249 | *ret = (float) tmp; | |
250 | return SR_OK; | |
251 | } | |
252 | ||
253 | /** | |
254 | * Convert a string representation of a numeric value to a sr_rational. | |
255 | * | |
256 | * The conversion is strict and will fail if the complete string does not | |
257 | * represent a valid number. The function sets errno according to the details | |
258 | * of the failure. This version ignores the locale. | |
259 | * | |
260 | * @param str The string representation to convert. | |
261 | * @param ret Pointer to sr_rational where the result of the conversion will be stored. | |
262 | * | |
263 | * @retval SR_OK Conversion successful. | |
264 | * @retval SR_ERR Failure. | |
265 | * | |
266 | * @since 0.5.0 | |
267 | */ | |
268 | SR_API int sr_parse_rational(const char *str, struct sr_rational *ret) | |
269 | { | |
270 | char *endptr = NULL; | |
271 | int64_t integral; | |
272 | int64_t fractional = 0; | |
273 | int64_t denominator = 1; | |
274 | int32_t fractional_len = 0; | |
275 | int32_t exponent = 0; | |
276 | bool is_negative = false; | |
277 | ||
278 | errno = 0; | |
279 | integral = g_ascii_strtoll(str, &endptr, 10); | |
280 | ||
281 | if (str == endptr && (str[0] == '-' || str[0] == '+') && str[1] == '.') | |
282 | endptr += 1; | |
283 | else if (errno) | |
284 | return SR_ERR; | |
285 | ||
286 | if (integral < 0 || str[0] == '-') | |
287 | is_negative = true; | |
288 | ||
289 | if (*endptr == '.') { | |
290 | const char* start = endptr + 1; | |
291 | fractional = g_ascii_strtoll(start, &endptr, 10); | |
292 | if (errno) | |
293 | return SR_ERR; | |
294 | fractional_len = endptr - start; | |
295 | } | |
296 | ||
297 | if ((*endptr == 'E') || (*endptr == 'e')) { | |
298 | exponent = g_ascii_strtoll(endptr + 1, &endptr, 10); | |
299 | if (errno) | |
300 | return SR_ERR; | |
301 | } | |
302 | ||
303 | if (*endptr != '\0') | |
304 | return SR_ERR; | |
305 | ||
306 | for (int i = 0; i < fractional_len; i++) | |
307 | integral *= 10; | |
308 | exponent -= fractional_len; | |
309 | ||
310 | if (!is_negative) | |
311 | integral += fractional; | |
312 | else | |
313 | integral -= fractional; | |
314 | ||
315 | while (exponent > 0) { | |
316 | integral *= 10; | |
317 | exponent--; | |
318 | } | |
319 | ||
320 | while (exponent < 0) { | |
321 | denominator *= 10; | |
322 | exponent++; | |
323 | } | |
324 | ||
325 | ret->p = integral; | |
326 | ret->q = denominator; | |
327 | ||
328 | return SR_OK; | |
329 | } | |
330 | ||
331 | /** | |
332 | * Convert a numeric value value to its "natural" string representation | |
333 | * in SI units. | |
334 | * | |
335 | * E.g. a value of 3000000, with units set to "W", would be converted | |
336 | * to "3 MW", 20000 to "20 kW", 31500 would become "31.5 kW". | |
337 | * | |
338 | * @param x The value to convert. | |
339 | * @param unit The unit to append to the string, or NULL if the string | |
340 | * has no units. | |
341 | * | |
342 | * @return A newly allocated string representation of the samplerate value, | |
343 | * or NULL upon errors. The caller is responsible to g_free() the | |
344 | * memory. | |
345 | * | |
346 | * @since 0.2.0 | |
347 | */ | |
348 | SR_API char *sr_si_string_u64(uint64_t x, const char *unit) | |
349 | { | |
350 | uint8_t i; | |
351 | uint64_t quot, divisor[] = { | |
352 | SR_HZ(1), SR_KHZ(1), SR_MHZ(1), SR_GHZ(1), | |
353 | SR_GHZ(1000), SR_GHZ(1000 * 1000), SR_GHZ(1000 * 1000 * 1000), | |
354 | }; | |
355 | const char *p, prefix[] = "\0kMGTPE"; | |
356 | char fmt[16], fract[20] = "", *f; | |
357 | ||
358 | if (!unit) | |
359 | unit = ""; | |
360 | ||
361 | for (i = 0; (quot = x / divisor[i]) >= 1000; i++); | |
362 | ||
363 | if (i) { | |
364 | sprintf(fmt, ".%%0%d"PRIu64, i * 3); | |
365 | f = fract + sprintf(fract, fmt, x % divisor[i]) - 1; | |
366 | ||
367 | while (f >= fract && strchr("0.", *f)) | |
368 | *f-- = 0; | |
369 | } | |
370 | ||
371 | p = prefix + i; | |
372 | ||
373 | return g_strdup_printf("%" PRIu64 "%s %.1s%s", quot, fract, p, unit); | |
374 | } | |
375 | ||
376 | /** | |
377 | * Convert a numeric samplerate value to its "natural" string representation. | |
378 | * | |
379 | * E.g. a value of 3000000 would be converted to "3 MHz", 20000 to "20 kHz", | |
380 | * 31500 would become "31.5 kHz". | |
381 | * | |
382 | * @param samplerate The samplerate in Hz. | |
383 | * | |
384 | * @return A newly allocated string representation of the samplerate value, | |
385 | * or NULL upon errors. The caller is responsible to g_free() the | |
386 | * memory. | |
387 | * | |
388 | * @since 0.1.0 | |
389 | */ | |
390 | SR_API char *sr_samplerate_string(uint64_t samplerate) | |
391 | { | |
392 | return sr_si_string_u64(samplerate, "Hz"); | |
393 | } | |
394 | ||
395 | /** | |
396 | * Convert a numeric period value to the "natural" string representation | |
397 | * of its period value. | |
398 | * | |
399 | * The period is specified as a rational number's numerator and denominator. | |
400 | * | |
401 | * E.g. a pair of (1, 5) would be converted to "200 ms", (10, 100) to "100 ms". | |
402 | * | |
403 | * @param v_p The period numerator. | |
404 | * @param v_q The period denominator. | |
405 | * | |
406 | * @return A newly allocated string representation of the period value, | |
407 | * or NULL upon errors. The caller is responsible to g_free() the | |
408 | * memory. | |
409 | * | |
410 | * @since 0.5.0 | |
411 | */ | |
412 | SR_API char *sr_period_string(uint64_t v_p, uint64_t v_q) | |
413 | { | |
414 | double freq, v; | |
415 | int prec; | |
416 | ||
417 | freq = 1 / ((double)v_p / v_q); | |
418 | ||
419 | if (freq > SR_GHZ(1)) { | |
420 | v = (double)v_p / v_q * 1000000000000.0; | |
421 | prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3; | |
422 | return g_strdup_printf("%.*f ps", prec, v); | |
423 | } else if (freq > SR_MHZ(1)) { | |
424 | v = (double)v_p / v_q * 1000000000.0; | |
425 | prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3; | |
426 | return g_strdup_printf("%.*f ns", prec, v); | |
427 | } else if (freq > SR_KHZ(1)) { | |
428 | v = (double)v_p / v_q * 1000000.0; | |
429 | prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3; | |
430 | return g_strdup_printf("%.*f us", prec, v); | |
431 | } else if (freq > 1) { | |
432 | v = (double)v_p / v_q * 1000.0; | |
433 | prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3; | |
434 | return g_strdup_printf("%.*f ms", prec, v); | |
435 | } else { | |
436 | v = (double)v_p / v_q; | |
437 | prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3; | |
438 | return g_strdup_printf("%.*f s", prec, v); | |
439 | } | |
440 | } | |
441 | ||
442 | /** | |
443 | * Convert a numeric voltage value to the "natural" string representation | |
444 | * of its voltage value. The voltage is specified as a rational number's | |
445 | * numerator and denominator. | |
446 | * | |
447 | * E.g. a value of 300000 would be converted to "300mV", 2 to "2V". | |
448 | * | |
449 | * @param v_p The voltage numerator. | |
450 | * @param v_q The voltage denominator. | |
451 | * | |
452 | * @return A newly allocated string representation of the voltage value, | |
453 | * or NULL upon errors. The caller is responsible to g_free() the | |
454 | * memory. | |
455 | * | |
456 | * @since 0.2.0 | |
457 | */ | |
458 | SR_API char *sr_voltage_string(uint64_t v_p, uint64_t v_q) | |
459 | { | |
460 | if (v_q == 1000) | |
461 | return g_strdup_printf("%" PRIu64 " mV", v_p); | |
462 | else if (v_q == 1) | |
463 | return g_strdup_printf("%" PRIu64 " V", v_p); | |
464 | else | |
465 | return g_strdup_printf("%g V", (float)v_p / (float)v_q); | |
466 | } | |
467 | ||
468 | /** | |
469 | * Convert a "natural" string representation of a size value to uint64_t. | |
470 | * | |
471 | * E.g. a value of "3k" or "3 K" would be converted to 3000, a value | |
472 | * of "15M" would be converted to 15000000. | |
473 | * | |
474 | * Value representations other than decimal (such as hex or octal) are not | |
475 | * supported. Only 'k' (kilo), 'm' (mega), 'g' (giga) suffixes are supported. | |
476 | * Spaces (but not other whitespace) between value and suffix are allowed. | |
477 | * | |
478 | * @param sizestring A string containing a (decimal) size value. | |
479 | * @param size Pointer to uint64_t which will contain the string's size value. | |
480 | * | |
481 | * @return SR_OK upon success, SR_ERR upon errors. | |
482 | * | |
483 | * @since 0.1.0 | |
484 | */ | |
485 | SR_API int sr_parse_sizestring(const char *sizestring, uint64_t *size) | |
486 | { | |
487 | uint64_t multiplier; | |
488 | int done; | |
489 | double frac_part; | |
490 | char *s; | |
491 | ||
492 | *size = strtoull(sizestring, &s, 10); | |
493 | multiplier = 0; | |
494 | frac_part = 0; | |
495 | done = FALSE; | |
496 | while (s && *s && multiplier == 0 && !done) { | |
497 | switch (*s) { | |
498 | case ' ': | |
499 | break; | |
500 | case '.': | |
501 | frac_part = g_ascii_strtod(s, &s); | |
502 | break; | |
503 | case 'k': | |
504 | case 'K': | |
505 | multiplier = SR_KHZ(1); | |
506 | break; | |
507 | case 'm': | |
508 | case 'M': | |
509 | multiplier = SR_MHZ(1); | |
510 | break; | |
511 | case 'g': | |
512 | case 'G': | |
513 | multiplier = SR_GHZ(1); | |
514 | break; | |
515 | case 't': | |
516 | case 'T': | |
517 | multiplier = SR_GHZ(1000); | |
518 | break; | |
519 | case 'p': | |
520 | case 'P': | |
521 | multiplier = SR_GHZ(1000 * 1000); | |
522 | break; | |
523 | case 'e': | |
524 | case 'E': | |
525 | multiplier = SR_GHZ(1000 * 1000 * 1000); | |
526 | break; | |
527 | default: | |
528 | done = TRUE; | |
529 | s--; | |
530 | } | |
531 | s++; | |
532 | } | |
533 | if (multiplier > 0) { | |
534 | *size *= multiplier; | |
535 | *size += frac_part * multiplier; | |
536 | } else { | |
537 | *size += frac_part; | |
538 | } | |
539 | ||
540 | if (s && *s && g_ascii_strcasecmp(s, "Hz")) | |
541 | return SR_ERR; | |
542 | ||
543 | return SR_OK; | |
544 | } | |
545 | ||
546 | /** | |
547 | * Convert a "natural" string representation of a time value to an | |
548 | * uint64_t value in milliseconds. | |
549 | * | |
550 | * E.g. a value of "3s" or "3 s" would be converted to 3000, a value | |
551 | * of "15ms" would be converted to 15. | |
552 | * | |
553 | * Value representations other than decimal (such as hex or octal) are not | |
554 | * supported. Only lower-case "s" and "ms" time suffixes are supported. | |
555 | * Spaces (but not other whitespace) between value and suffix are allowed. | |
556 | * | |
557 | * @param timestring A string containing a (decimal) time value. | |
558 | * @return The string's time value as uint64_t, in milliseconds. | |
559 | * | |
560 | * @todo Add support for "m" (minutes) and others. | |
561 | * @todo Add support for picoseconds? | |
562 | * @todo Allow both lower-case and upper-case? If no, document it. | |
563 | * | |
564 | * @since 0.1.0 | |
565 | */ | |
566 | SR_API uint64_t sr_parse_timestring(const char *timestring) | |
567 | { | |
568 | uint64_t time_msec; | |
569 | char *s; | |
570 | ||
571 | /* TODO: Error handling, logging. */ | |
572 | ||
573 | time_msec = strtoull(timestring, &s, 10); | |
574 | if (time_msec == 0 && s == timestring) | |
575 | return 0; | |
576 | ||
577 | if (s && *s) { | |
578 | while (*s == ' ') | |
579 | s++; | |
580 | if (!strcmp(s, "s")) | |
581 | time_msec *= 1000; | |
582 | else if (!strcmp(s, "ms")) | |
583 | ; /* redundant */ | |
584 | else | |
585 | return 0; | |
586 | } | |
587 | ||
588 | return time_msec; | |
589 | } | |
590 | ||
591 | /** @since 0.1.0 */ | |
592 | SR_API gboolean sr_parse_boolstring(const char *boolstr) | |
593 | { | |
594 | /* | |
595 | * Complete absence of an input spec is assumed to mean TRUE, | |
596 | * as in command line option strings like this: | |
597 | * ...:samplerate=100k:header:numchannels=4:... | |
598 | */ | |
599 | if (!boolstr || !*boolstr) | |
600 | return TRUE; | |
601 | ||
602 | if (!g_ascii_strncasecmp(boolstr, "true", 4) || | |
603 | !g_ascii_strncasecmp(boolstr, "yes", 3) || | |
604 | !g_ascii_strncasecmp(boolstr, "on", 2) || | |
605 | !g_ascii_strncasecmp(boolstr, "1", 1)) | |
606 | return TRUE; | |
607 | ||
608 | return FALSE; | |
609 | } | |
610 | ||
611 | /** @since 0.2.0 */ | |
612 | SR_API int sr_parse_period(const char *periodstr, uint64_t *p, uint64_t *q) | |
613 | { | |
614 | char *s; | |
615 | ||
616 | *p = strtoull(periodstr, &s, 10); | |
617 | if (*p == 0 && s == periodstr) | |
618 | /* No digits found. */ | |
619 | return SR_ERR_ARG; | |
620 | ||
621 | if (s && *s) { | |
622 | while (*s == ' ') | |
623 | s++; | |
624 | if (!strcmp(s, "fs")) | |
625 | *q = 1000000000000000ULL; | |
626 | else if (!strcmp(s, "ps")) | |
627 | *q = 1000000000000ULL; | |
628 | else if (!strcmp(s, "ns")) | |
629 | *q = 1000000000ULL; | |
630 | else if (!strcmp(s, "us")) | |
631 | *q = 1000000; | |
632 | else if (!strcmp(s, "ms")) | |
633 | *q = 1000; | |
634 | else if (!strcmp(s, "s")) | |
635 | *q = 1; | |
636 | else | |
637 | /* Must have a time suffix. */ | |
638 | return SR_ERR_ARG; | |
639 | } | |
640 | ||
641 | return SR_OK; | |
642 | } | |
643 | ||
644 | /** @since 0.2.0 */ | |
645 | SR_API int sr_parse_voltage(const char *voltstr, uint64_t *p, uint64_t *q) | |
646 | { | |
647 | char *s; | |
648 | ||
649 | *p = strtoull(voltstr, &s, 10); | |
650 | if (*p == 0 && s == voltstr) | |
651 | /* No digits found. */ | |
652 | return SR_ERR_ARG; | |
653 | ||
654 | if (s && *s) { | |
655 | while (*s == ' ') | |
656 | s++; | |
657 | if (!g_ascii_strcasecmp(s, "mv")) | |
658 | *q = 1000L; | |
659 | else if (!g_ascii_strcasecmp(s, "v")) | |
660 | *q = 1; | |
661 | else | |
662 | /* Must have a base suffix. */ | |
663 | return SR_ERR_ARG; | |
664 | } | |
665 | ||
666 | return SR_OK; | |
667 | } | |
668 | ||
669 | /** @} */ |