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libsigrok
0.5.0
sigrok hardware access and backend library
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Helper functions for handling or converting libsigrok-related strings. More...
Functions | |
int | sr_parse_rational (const char *str, struct sr_rational *ret) |
Convert a string representation of a numeric value to a sr_rational. More... | |
char * | sr_si_string_u64 (uint64_t x, const char *unit) |
Convert a numeric value value to its "natural" string representation in SI units. More... | |
char * | sr_samplerate_string (uint64_t samplerate) |
Convert a numeric samplerate value to its "natural" string representation. More... | |
char * | sr_period_string (uint64_t v_p, uint64_t v_q) |
Convert a numeric period value to the "natural" string representation of its period value. More... | |
char * | sr_voltage_string (uint64_t v_p, uint64_t v_q) |
Convert a numeric voltage value to the "natural" string representation of its voltage value. More... | |
int | sr_parse_sizestring (const char *sizestring, uint64_t *size) |
Convert a "natural" string representation of a size value to uint64_t. More... | |
uint64_t | sr_parse_timestring (const char *timestring) |
Convert a "natural" string representation of a time value to an uint64_t value in milliseconds. More... | |
gboolean | sr_parse_boolstring (const char *boolstr) |
int | sr_parse_period (const char *periodstr, uint64_t *p, uint64_t *q) |
int | sr_parse_voltage (const char *voltstr, uint64_t *p, uint64_t *q) |
Helper functions for handling or converting libsigrok-related strings.
gboolean sr_parse_boolstring | ( | const char * | boolstr | ) |
int sr_parse_period | ( | const char * | periodstr, |
uint64_t * | p, | ||
uint64_t * | q | ||
) |
int sr_parse_rational | ( | const char * | str, |
struct sr_rational * | ret | ||
) |
Convert a string representation of a numeric value to a sr_rational.
The conversion is strict and will fail if the complete string does not represent a valid number. The function sets errno according to the details of the failure. This version ignores the locale.
str | The string representation to convert. |
ret | Pointer to sr_rational where the result of the conversion will be stored. |
SR_OK | Conversion successful. |
SR_ERR | Failure. |
Definition at line 228 of file strutil.c.
References sr_rational::p, sr_rational::q, SR_ERR, and SR_OK.
int sr_parse_sizestring | ( | const char * | sizestring, |
uint64_t * | size | ||
) |
Convert a "natural" string representation of a size value to uint64_t.
E.g. a value of "3k" or "3 K" would be converted to 3000, a value of "15M" would be converted to 15000000.
Value representations other than decimal (such as hex or octal) are not supported. Only 'k' (kilo), 'm' (mega), 'g' (giga) suffixes are supported. Spaces (but not other whitespace) between value and suffix are allowed.
sizestring | A string containing a (decimal) size value. |
size | Pointer to uint64_t which will contain the string's size value. |
Definition at line 463 of file strutil.c.
References SR_ERR, SR_GHZ, SR_KHZ, SR_MHZ, and SR_OK.
Referenced by sr_session_load().
uint64_t sr_parse_timestring | ( | const char * | timestring | ) |
Convert a "natural" string representation of a time value to an uint64_t value in milliseconds.
E.g. a value of "3s" or "3 s" would be converted to 3000, a value of "15ms" would be converted to 15.
Value representations other than decimal (such as hex or octal) are not supported. Only lower-case "s" and "ms" time suffixes are supported. Spaces (but not other whitespace) between value and suffix are allowed.
timestring | A string containing a (decimal) time value. |
int sr_parse_voltage | ( | const char * | voltstr, |
uint64_t * | p, | ||
uint64_t * | q | ||
) |
char* sr_period_string | ( | uint64_t | v_p, |
uint64_t | v_q | ||
) |
Convert a numeric period value to the "natural" string representation of its period value.
The period is specified as a rational number's numerator and denominator.
E.g. a pair of (1, 5) would be converted to "200 ms", (10, 100) to "100 ms".
v_p | The period numerator. |
v_q | The period denominator. |
char* sr_samplerate_string | ( | uint64_t | samplerate | ) |
Convert a numeric samplerate value to its "natural" string representation.
E.g. a value of 3000000 would be converted to "3 MHz", 20000 to "20 kHz", 31500 would become "31.5 kHz".
samplerate | The samplerate in Hz. |
Definition at line 344 of file strutil.c.
References sr_si_string_u64().
char* sr_si_string_u64 | ( | uint64_t | x, |
const char * | unit | ||
) |
Convert a numeric value value to its "natural" string representation in SI units.
E.g. a value of 3000000, with units set to "W", would be converted to "3 MW", 20000 to "20 kW", 31500 would become "31.5 kW".
x | The value to convert. |
unit | The unit to append to the string, or NULL if the string has no units. |
Definition at line 302 of file strutil.c.
References SR_GHZ, SR_HZ, SR_KHZ, and SR_MHZ.
Referenced by sr_samplerate_string().
char* sr_voltage_string | ( | uint64_t | v_p, |
uint64_t | v_q | ||
) |
Convert a numeric voltage value to the "natural" string representation of its voltage value.
The voltage is specified as a rational number's numerator and denominator.
E.g. a value of 300000 would be converted to "300mV", 2 to "2V".
v_p | The voltage numerator. |
v_q | The voltage denominator. |