2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
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.
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.
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/>.
20 /* Needed for POSIX.1-2008 locale functions */
22 #define _XOPEN_SOURCE 700
27 #if defined(__FreeBSD__) || defined(__APPLE__)
30 #if defined(__FreeBSD__)
31 #include <sys/param.h>
38 #include <libsigrok/libsigrok.h>
39 #include "libsigrok-internal.h"
42 #define LOG_PREFIX "strutil"
48 * Helper functions for handling or converting libsigrok-related strings.
52 * @defgroup grp_strutil String utilities
54 * Helper functions for handling or converting libsigrok-related strings.
60 * Convert a string representation of a numeric value (base 10) to a long integer. The
61 * conversion is strict and will fail if the complete string does not represent
62 * a valid long integer. The function sets errno according to the details of the
65 * @param str The string representation to convert.
66 * @param ret Pointer to long where the result of the conversion will be stored.
68 * @retval SR_OK Conversion successful.
69 * @retval SR_ERR Failure.
73 SR_PRIV int sr_atol(const char *str, long *ret)
79 tmp = strtol(str, &endptr, 10);
81 while (endptr && isspace(*endptr))
84 if (!endptr || *endptr || errno) {
95 * Convert a text to a number including support for non-decimal bases.
96 * Also optionally returns the position after the number, where callers
97 * can either error out, or support application specific suffixes.
99 * @param[in] str The input text to convert.
100 * @param[out] ret The conversion result.
101 * @param[out] end The position after the number.
102 * @param[in] base The number format's base, can be 0.
104 * @retval SR_OK Conversion successful.
105 * @retval SR_ERR Conversion failed.
109 * This routine is more general than @ref sr_atol(), which strictly
110 * expects the input text to contain just a decimal number, and nothing
111 * else in addition. The @ref sr_atol_base() routine accepts trailing
112 * text after the number, and supports non-decimal numbers (bin, hex),
113 * including automatic detection from prefix text.
115 SR_PRIV int sr_atol_base(const char *str, long *ret, char **end, int base)
120 /* Add "0b" prefix support which strtol(3) may be missing. */
121 while (str && isspace(*str))
123 if (!base && strncmp(str, "0b", strlen("0b")) == 0) {
128 /* Run the number conversion. Quick bail out if that fails. */
131 num = strtol(str, &endptr, base);
132 if (!endptr || errno) {
139 /* Advance to optional non-space trailing suffix. */
140 while (endptr && isspace(*endptr))
149 * Convert a string representation of a numeric value (base 10) to an integer. The
150 * conversion is strict and will fail if the complete string does not represent
151 * a valid integer. The function sets errno according to the details of the
154 * @param str The string representation to convert.
155 * @param ret Pointer to int where the result of the conversion will be stored.
157 * @retval SR_OK Conversion successful.
158 * @retval SR_ERR Failure.
162 SR_PRIV int sr_atoi(const char *str, int *ret)
166 if (sr_atol(str, &tmp) != SR_OK)
169 if ((int) tmp != tmp) {
179 * Convert a string representation of a numeric value to a double. The
180 * conversion is strict and will fail if the complete string does not represent
181 * a valid double. The function sets errno according to the details of the
184 * @param str The string representation to convert.
185 * @param ret Pointer to double where the result of the conversion will be stored.
187 * @retval SR_OK Conversion successful.
188 * @retval SR_ERR Failure.
192 SR_PRIV int sr_atod(const char *str, double *ret)
198 tmp = strtof(str, &endptr);
200 while (endptr && isspace(*endptr))
203 if (!endptr || *endptr || errno) {
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
219 * @param str The string representation to convert.
220 * @param ret Pointer to float where the result of the conversion will be stored.
222 * @retval SR_OK Conversion successful.
223 * @retval SR_ERR Failure.
227 SR_PRIV int sr_atof(const char *str, float *ret)
231 if (sr_atod(str, &tmp) != SR_OK)
234 if ((float) tmp != tmp) {
244 * Convert a string representation of a numeric value to a double. The
245 * conversion is strict and will fail if the complete string does not represent
246 * a valid double. The function sets errno according to the details of the
247 * failure. This version ignores the locale.
249 * @param str The string representation to convert.
250 * @param ret Pointer to double where the result of the conversion will be stored.
252 * @retval SR_OK Conversion successful.
253 * @retval SR_ERR Failure.
257 SR_PRIV int sr_atod_ascii(const char *str, double *ret)
263 tmp = g_ascii_strtod(str, &endptr);
265 if (!endptr || *endptr || errno) {
276 * Convert text to a floating point value, and get its precision.
278 * @param[in] str The input text to convert.
279 * @param[out] ret The conversion result, a double precision float number.
280 * @param[out] digits The number of significant decimals.
282 * @returns SR_OK in case of successful text to number conversion.
283 * @returns SR_ERR when conversion fails.
287 SR_PRIV int sr_atod_ascii_digits(const char *str, double *ret, int *digits)
290 int *dig_ref, m_dig, exp;
295 * Convert floating point text to the number value, _and_ get
296 * the value's precision in the process. Steps taken to do it:
297 * - Skip leading whitespace.
298 * - Count the number of decimals after the mantissa's period.
299 * - Get the exponent's signed value.
301 * This implementation still uses common code for the actual
302 * conversion, but "violates API layers" by duplicating the
303 * text scan, to get the number of significant digits.
306 while (*p && isspace(*p))
308 if (*p == '-' || *p == '+')
315 if (toupper(c) == 'E') {
316 exp = strtol(p, NULL, 10);
329 /* Need not warn, conversion will fail. */
332 sr_spew("atod digits: txt \"%s\" -> m %d, e %d -> digits %d",
333 str, m_dig, exp, m_dig + -exp);
336 if (sr_atod_ascii(str, &f) != SR_OK)
347 * Convert a string representation of a numeric value to a float. The
348 * conversion is strict and will fail if the complete string does not represent
349 * a valid float. The function sets errno according to the details of the
350 * failure. This version ignores the locale.
352 * @param str The string representation to convert.
353 * @param ret Pointer to float where the result of the conversion will be stored.
355 * @retval SR_OK Conversion successful.
356 * @retval SR_ERR Failure.
360 SR_PRIV int sr_atof_ascii(const char *str, float *ret)
366 tmp = g_ascii_strtod(str, &endptr);
368 if (!endptr || *endptr || errno) {
374 /* FIXME This fails unexpectedly. Some other method to safel downcast
375 * needs to be found. Checking against FLT_MAX doesn't work as well. */
377 if ((float) tmp != tmp) {
379 sr_dbg("ERANGEEEE %e != %e", (float) tmp, tmp);
389 * Compose a string with a format string in the buffer pointed to by buf.
391 * It is up to the caller to ensure that the allocated buffer is large enough
392 * to hold the formatted result.
394 * A terminating NUL character is automatically appended after the content
397 * After the format parameter, the function expects at least as many additional
398 * arguments as needed for format.
400 * This version ignores the current locale and uses the locale "C" for Linux,
401 * FreeBSD, OSX and Android.
403 * @param buf Pointer to a buffer where the resulting C string is stored.
404 * @param format C string that contains a format string (see printf).
405 * @param ... A sequence of additional arguments, each containing a value to be
406 * used to replace a format specifier in the format string.
408 * @return On success, the number of characters that would have been written,
409 * not counting the terminating NUL character.
413 SR_API int sr_sprintf_ascii(char *buf, const char *format, ...)
418 va_start(args, format);
419 ret = sr_vsprintf_ascii(buf, format, args);
426 * Compose a string with a format string in the buffer pointed to by buf.
428 * It is up to the caller to ensure that the allocated buffer is large enough
429 * to hold the formatted result.
431 * Internally, the function retrieves arguments from the list identified by
432 * args as if va_arg was used on it, and thus the state of args is likely to
433 * be altered by the call.
435 * In any case, args should have been initialized by va_start at some point
436 * before the call, and it is expected to be released by va_end at some point
439 * This version ignores the current locale and uses the locale "C" for Linux,
440 * FreeBSD, OSX and Android.
442 * @param buf Pointer to a buffer where the resulting C string is stored.
443 * @param format C string that contains a format string (see printf).
444 * @param args A value identifying a variable arguments list initialized with
447 * @return On success, the number of characters that would have been written,
448 * not counting the terminating NUL character.
452 SR_API int sr_vsprintf_ascii(char *buf, const char *format, va_list args)
459 * TODO: This part compiles with mingw-w64 but doesn't run with Win7.
460 * Doesn't start because of "Procedure entry point _create_locale
461 * not found in msvcrt.dll".
462 * mingw-w64 should link to msvcr100.dll not msvcrt.dll!
463 * See: https://msdn.microsoft.com/en-us/en-en/library/1kt27hek.aspx
467 locale = _create_locale(LC_NUMERIC, "C");
468 ret = _vsprintf_l(buf, format, locale, args);
469 _free_locale(locale);
472 /* vsprintf() uses the current locale, may not work correctly for floats. */
473 ret = vsprintf(buf, format, args);
476 #elif defined(__APPLE__)
479 * https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/printf_l.3.html
480 * https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/xlocale.3.html
485 locale = newlocale(LC_NUMERIC_MASK, "C", NULL);
486 ret = vsprintf_l(buf, locale, format, args);
490 #elif defined(__FreeBSD__) && __FreeBSD_version >= 901000
493 * https://www.freebsd.org/cgi/man.cgi?query=printf_l&apropos=0&sektion=3&manpath=FreeBSD+9.1-RELEASE
494 * https://www.freebsd.org/cgi/man.cgi?query=xlocale&apropos=0&sektion=3&manpath=FreeBSD+9.1-RELEASE
499 locale = newlocale(LC_NUMERIC_MASK, "C", NULL);
500 ret = vsprintf_l(buf, locale, format, args);
504 #elif defined(__ANDROID__)
506 * The Bionic libc only has two locales ("C" aka "POSIX" and "C.UTF-8"
507 * aka "en_US.UTF-8"). The decimal point is hard coded as "."
508 * See: https://android.googlesource.com/platform/bionic/+/master/libc/bionic/locale.cpp
512 ret = vsprintf(buf, format, args);
515 #elif defined(__linux__)
517 locale_t old_locale, temp_locale;
519 /* Switch to C locale for proper float/double conversion. */
520 temp_locale = newlocale(LC_NUMERIC, "C", NULL);
521 old_locale = uselocale(temp_locale);
523 ret = vsprintf(buf, format, args);
525 /* Switch back to original locale. */
526 uselocale(old_locale);
527 freelocale(temp_locale);
530 #elif defined(__unix__) || defined(__unix)
532 * This is a fallback for all other BSDs, *nix and FreeBSD <= 9.0, by
533 * using the current locale for snprintf(). This may not work correctly
538 ret = vsprintf(buf, format, args);
542 /* No implementation for unknown systems! */
548 * Composes a string with a format string (like printf) in the buffer pointed
549 * by buf (taking buf_size as the maximum buffer capacity to fill).
550 * If the resulting string would be longer than n - 1 characters, the remaining
551 * characters are discarded and not stored, but counted for the value returned
553 * A terminating NUL character is automatically appended after the content
555 * After the format parameter, the function expects at least as many additional
556 * arguments as needed for format.
558 * This version ignores the current locale and uses the locale "C" for Linux,
559 * FreeBSD, OSX and Android.
561 * @param buf Pointer to a buffer where the resulting C string is stored.
562 * @param buf_size Maximum number of bytes to be used in the buffer. The
563 * generated string has a length of at most buf_size - 1, leaving space
564 * for the additional terminating NUL character.
565 * @param format C string that contains a format string (see printf).
566 * @param ... A sequence of additional arguments, each containing a value to be
567 * used to replace a format specifier in the format string.
569 * @return On success, the number of characters that would have been written if
570 * buf_size had been sufficiently large, not counting the terminating
571 * NUL character. On failure, a negative number is returned.
572 * Notice that only when this returned value is non-negative and less
573 * than buf_size, the string has been completely written.
577 SR_API int sr_snprintf_ascii(char *buf, size_t buf_size,
578 const char *format, ...)
583 va_start(args, format);
584 ret = sr_vsnprintf_ascii(buf, buf_size, format, args);
591 * Composes a string with a format string (like printf) in the buffer pointed
592 * by buf (taking buf_size as the maximum buffer capacity to fill).
593 * If the resulting string would be longer than n - 1 characters, the remaining
594 * characters are discarded and not stored, but counted for the value returned
596 * A terminating NUL character is automatically appended after the content
598 * Internally, the function retrieves arguments from the list identified by
599 * args as if va_arg was used on it, and thus the state of args is likely to
600 * be altered by the call.
601 * In any case, arg should have been initialized by va_start at some point
602 * before the call, and it is expected to be released by va_end at some point
605 * This version ignores the current locale and uses the locale "C" for Linux,
606 * FreeBSD, OSX and Android.
608 * @param buf Pointer to a buffer where the resulting C string is stored.
609 * @param buf_size Maximum number of bytes to be used in the buffer. The
610 * generated string has a length of at most buf_size - 1, leaving space
611 * for the additional terminating NUL character.
612 * @param format C string that contains a format string (see printf).
613 * @param args A value identifying a variable arguments list initialized with
616 * @return On success, the number of characters that would have been written if
617 * buf_size had been sufficiently large, not counting the terminating
618 * NUL character. On failure, a negative number is returned.
619 * Notice that only when this returned value is non-negative and less
620 * than buf_size, the string has been completely written.
624 SR_API int sr_vsnprintf_ascii(char *buf, size_t buf_size,
625 const char *format, va_list args)
632 * TODO: This part compiles with mingw-w64 but doesn't run with Win7.
633 * Doesn't start because of "Procedure entry point _create_locale
634 * not found in msvcrt.dll".
635 * mingw-w64 should link to msvcr100.dll not msvcrt.dll!.
636 * See: https://msdn.microsoft.com/en-us/en-en/library/1kt27hek.aspx
640 locale = _create_locale(LC_NUMERIC, "C");
641 ret = _vsnprintf_l(buf, buf_size, format, locale, args);
642 _free_locale(locale);
645 /* vsprintf uses the current locale, may cause issues for floats. */
646 ret = vsnprintf(buf, buf_size, format, args);
649 #elif defined(__APPLE__)
652 * https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/printf_l.3.html
653 * https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/xlocale.3.html
658 locale = newlocale(LC_NUMERIC_MASK, "C", NULL);
659 ret = vsnprintf_l(buf, buf_size, locale, format, args);
663 #elif defined(__FreeBSD__) && __FreeBSD_version >= 901000
666 * https://www.freebsd.org/cgi/man.cgi?query=printf_l&apropos=0&sektion=3&manpath=FreeBSD+9.1-RELEASE
667 * https://www.freebsd.org/cgi/man.cgi?query=xlocale&apropos=0&sektion=3&manpath=FreeBSD+9.1-RELEASE
672 locale = newlocale(LC_NUMERIC_MASK, "C", NULL);
673 ret = vsnprintf_l(buf, buf_size, locale, format, args);
677 #elif defined(__ANDROID__)
679 * The Bionic libc only has two locales ("C" aka "POSIX" and "C.UTF-8"
680 * aka "en_US.UTF-8"). The decimal point is hard coded as ".".
681 * See: https://android.googlesource.com/platform/bionic/+/master/libc/bionic/locale.cpp
685 ret = vsnprintf(buf, buf_size, format, args);
688 #elif defined(__linux__)
690 locale_t old_locale, temp_locale;
692 /* Switch to C locale for proper float/double conversion. */
693 temp_locale = newlocale(LC_NUMERIC, "C", NULL);
694 old_locale = uselocale(temp_locale);
696 ret = vsnprintf(buf, buf_size, format, args);
698 /* Switch back to original locale. */
699 uselocale(old_locale);
700 freelocale(temp_locale);
703 #elif defined(__unix__) || defined(__unix)
705 * This is a fallback for all other BSDs, *nix and FreeBSD <= 9.0, by
706 * using the current locale for snprintf(). This may not work correctly
711 ret = vsnprintf(buf, buf_size, format, args);
715 /* No implementation for unknown systems! */
721 * Convert a sequence of bytes to its textual representation ("hex dump").
723 * Callers should free the allocated GString. See sr_hexdump_free().
725 * @param[in] data Pointer to the byte sequence to print.
726 * @param[in] len Number of bytes to print.
728 * @return NULL upon error, newly allocated GString pointer otherwise.
732 SR_PRIV GString *sr_hexdump_new(const uint8_t *data, const size_t len)
737 s = g_string_sized_new(3 * len);
738 for (i = 0; i < len; i++) {
740 g_string_append_c(s, ' ');
741 g_string_append_printf(s, "%02x", data[i]);
748 * Free a hex dump text that was created by sr_hexdump_new().
750 * @param[in] s Pointer to the GString to release.
754 SR_PRIV void sr_hexdump_free(GString *s)
757 g_string_free(s, TRUE);
761 * Convert a string representation of a numeric value to a sr_rational.
763 * The conversion is strict and will fail if the complete string does not
764 * represent a valid number. The function sets errno according to the details
765 * of the failure. This version ignores the locale.
767 * @param str The string representation to convert.
768 * @param ret Pointer to sr_rational where the result of the conversion will be stored.
770 * @retval SR_OK Conversion successful.
771 * @retval SR_ERR Failure.
775 SR_API int sr_parse_rational(const char *str, struct sr_rational *ret)
779 int64_t fractional = 0;
780 int64_t denominator = 1;
781 int32_t fractional_len = 0;
782 int32_t exponent = 0;
783 gboolean is_negative = FALSE;
784 gboolean no_integer, no_fractional;
786 while (isspace(*str))
790 integral = g_ascii_strtoll(str, &endptr, 10);
792 if (str == endptr && (str[0] == '-' || str[0] == '+') && str[1] == '.') {
795 } else if (str == endptr && str[0] == '.') {
803 if (integral < 0 || str[0] == '-')
807 if (*endptr == '.') {
808 gboolean is_exp, is_eos;
809 const char *start = endptr + 1;
810 fractional = g_ascii_strtoll(start, &endptr, 10);
811 is_exp = *endptr == 'E' || *endptr == 'e';
812 is_eos = *endptr == '\0';
813 if (endptr == start && (is_exp || is_eos)) {
819 no_fractional = endptr == start;
820 if (no_integer && no_fractional)
822 fractional_len = endptr - start;
826 if ((*endptr == 'E') || (*endptr == 'e')) {
827 exponent = g_ascii_strtoll(endptr + 1, &endptr, 10);
835 for (int i = 0; i < fractional_len; i++)
837 exponent -= fractional_len;
840 integral += fractional;
842 integral -= fractional;
844 while (exponent > 0) {
849 while (exponent < 0) {
855 ret->q = denominator;
861 * Convert a numeric value value to its "natural" string representation
864 * E.g. a value of 3000000, with units set to "W", would be converted
865 * to "3 MW", 20000 to "20 kW", 31500 would become "31.5 kW".
867 * @param x The value to convert.
868 * @param unit The unit to append to the string, or NULL if the string
871 * @return A newly allocated string representation of the samplerate value,
872 * or NULL upon errors. The caller is responsible to g_free() the
877 SR_API char *sr_si_string_u64(uint64_t x, const char *unit)
880 uint64_t quot, divisor[] = {
881 SR_HZ(1), SR_KHZ(1), SR_MHZ(1), SR_GHZ(1),
882 SR_GHZ(1000), SR_GHZ(1000 * 1000), SR_GHZ(1000 * 1000 * 1000),
884 const char *p, prefix[] = "\0kMGTPE";
885 char fmt[16], fract[20] = "", *f;
890 for (i = 0; (quot = x / divisor[i]) >= 1000; i++);
893 sprintf(fmt, ".%%0%d"PRIu64, i * 3);
894 f = fract + sprintf(fract, fmt, x % divisor[i]) - 1;
896 while (f >= fract && strchr("0.", *f))
902 return g_strdup_printf("%" PRIu64 "%s %.1s%s", quot, fract, p, unit);
906 * Convert a numeric samplerate value to its "natural" string representation.
908 * E.g. a value of 3000000 would be converted to "3 MHz", 20000 to "20 kHz",
909 * 31500 would become "31.5 kHz".
911 * @param samplerate The samplerate in Hz.
913 * @return A newly allocated string representation of the samplerate value,
914 * or NULL upon errors. The caller is responsible to g_free() the
919 SR_API char *sr_samplerate_string(uint64_t samplerate)
921 return sr_si_string_u64(samplerate, "Hz");
925 * Convert a numeric period value to the "natural" string representation
926 * of its period value.
928 * The period is specified as a rational number's numerator and denominator.
930 * E.g. a pair of (1, 5) would be converted to "200 ms", (10, 100) to "100 ms".
932 * @param v_p The period numerator.
933 * @param v_q The period denominator.
935 * @return A newly allocated string representation of the period value,
936 * or NULL upon errors. The caller is responsible to g_free() the
941 SR_API char *sr_period_string(uint64_t v_p, uint64_t v_q)
946 freq = 1 / ((double)v_p / v_q);
948 if (freq > SR_GHZ(1)) {
949 v = (double)v_p / v_q * 1000000000000.0;
950 prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
951 return g_strdup_printf("%.*f ps", prec, v);
952 } else if (freq > SR_MHZ(1)) {
953 v = (double)v_p / v_q * 1000000000.0;
954 prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
955 return g_strdup_printf("%.*f ns", prec, v);
956 } else if (freq > SR_KHZ(1)) {
957 v = (double)v_p / v_q * 1000000.0;
958 prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
959 return g_strdup_printf("%.*f us", prec, v);
960 } else if (freq > 1) {
961 v = (double)v_p / v_q * 1000.0;
962 prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
963 return g_strdup_printf("%.*f ms", prec, v);
965 v = (double)v_p / v_q;
966 prec = ((v - (uint64_t)v) < FLT_MIN) ? 0 : 3;
967 return g_strdup_printf("%.*f s", prec, v);
972 * Convert a numeric voltage value to the "natural" string representation
973 * of its voltage value. The voltage is specified as a rational number's
974 * numerator and denominator.
976 * E.g. a value of 300000 would be converted to "300mV", 2 to "2V".
978 * @param v_p The voltage numerator.
979 * @param v_q The voltage denominator.
981 * @return A newly allocated string representation of the voltage value,
982 * or NULL upon errors. The caller is responsible to g_free() the
987 SR_API char *sr_voltage_string(uint64_t v_p, uint64_t v_q)
990 return g_strdup_printf("%" PRIu64 " mV", v_p);
992 return g_strdup_printf("%" PRIu64 " V", v_p);
994 return g_strdup_printf("%g V", (float)v_p / (float)v_q);
998 * Convert a "natural" string representation of a size value to uint64_t.
1000 * E.g. a value of "3k" or "3 K" would be converted to 3000, a value
1001 * of "15M" would be converted to 15000000.
1003 * Value representations other than decimal (such as hex or octal) are not
1004 * supported. Only 'k' (kilo), 'm' (mega), 'g' (giga) suffixes are supported.
1005 * Spaces (but not other whitespace) between value and suffix are allowed.
1007 * @param sizestring A string containing a (decimal) size value.
1008 * @param size Pointer to uint64_t which will contain the string's size value.
1010 * @return SR_OK upon success, SR_ERR upon errors.
1014 SR_API int sr_parse_sizestring(const char *sizestring, uint64_t *size)
1016 uint64_t multiplier;
1021 *size = strtoull(sizestring, &s, 10);
1025 while (s && *s && multiplier == 0 && !done) {
1030 frac_part = g_ascii_strtod(s, &s);
1034 multiplier = SR_KHZ(1);
1038 multiplier = SR_MHZ(1);
1042 multiplier = SR_GHZ(1);
1046 multiplier = SR_GHZ(1000);
1050 multiplier = SR_GHZ(1000 * 1000);
1054 multiplier = SR_GHZ(1000 * 1000 * 1000);
1062 if (multiplier > 0) {
1063 *size *= multiplier;
1064 *size += frac_part * multiplier;
1069 if (s && *s && g_ascii_strcasecmp(s, "Hz"))
1076 * Convert a "natural" string representation of a time value to an
1077 * uint64_t value in milliseconds.
1079 * E.g. a value of "3s" or "3 s" would be converted to 3000, a value
1080 * of "15ms" would be converted to 15.
1082 * Value representations other than decimal (such as hex or octal) are not
1083 * supported. Only lower-case "s" and "ms" time suffixes are supported.
1084 * Spaces (but not other whitespace) between value and suffix are allowed.
1086 * @param timestring A string containing a (decimal) time value.
1087 * @return The string's time value as uint64_t, in milliseconds.
1089 * @todo Add support for "m" (minutes) and others.
1090 * @todo Add support for picoseconds?
1091 * @todo Allow both lower-case and upper-case? If no, document it.
1095 SR_API uint64_t sr_parse_timestring(const char *timestring)
1100 /* TODO: Error handling, logging. */
1102 time_msec = strtoull(timestring, &s, 10);
1103 if (time_msec == 0 && s == timestring)
1109 if (!strcmp(s, "s"))
1111 else if (!strcmp(s, "ms"))
1121 SR_API gboolean sr_parse_boolstring(const char *boolstr)
1124 * Complete absence of an input spec is assumed to mean TRUE,
1125 * as in command line option strings like this:
1126 * ...:samplerate=100k:header:numchannels=4:...
1128 if (!boolstr || !*boolstr)
1131 if (!g_ascii_strncasecmp(boolstr, "true", 4) ||
1132 !g_ascii_strncasecmp(boolstr, "yes", 3) ||
1133 !g_ascii_strncasecmp(boolstr, "on", 2) ||
1134 !g_ascii_strncasecmp(boolstr, "1", 1))
1141 SR_API int sr_parse_period(const char *periodstr, uint64_t *p, uint64_t *q)
1145 *p = strtoull(periodstr, &s, 10);
1146 if (*p == 0 && s == periodstr)
1147 /* No digits found. */
1153 if (!strcmp(s, "fs"))
1154 *q = UINT64_C(1000000000000000);
1155 else if (!strcmp(s, "ps"))
1156 *q = UINT64_C(1000000000000);
1157 else if (!strcmp(s, "ns"))
1158 *q = UINT64_C(1000000000);
1159 else if (!strcmp(s, "us"))
1161 else if (!strcmp(s, "ms"))
1163 else if (!strcmp(s, "s"))
1166 /* Must have a time suffix. */
1174 SR_API int sr_parse_voltage(const char *voltstr, uint64_t *p, uint64_t *q)
1178 *p = strtoull(voltstr, &s, 10);
1179 if (*p == 0 && s == voltstr)
1180 /* No digits found. */
1186 if (!g_ascii_strcasecmp(s, "mv"))
1188 else if (!g_ascii_strcasecmp(s, "v"))
1191 /* Must have a base suffix. */