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asyc-ii: Prefer more portable and common string routines 

Replace C language string operations with their glib incarnations for
improved portability. Prefer a common sigrok float conversion routine
over a DIY implementation.
This commit is contained in:
Gerhard Sittig 2016-12-31 12:54:39 +01:00 committed by Uwe Hermann
parent c2debda60d
commit 43528280d9
1 changed files with 18 additions and 22 deletions
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40
src/dmm/asycii.c
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@ -61,7 +61,6 @@ static int parse_value(const char *buf, struct asycii_info *info,
char valstr[7 + 1];
const char *valp;
int i, cnt, is_ol, dot_pos;
char *endp;
/*
* Strip all spaces from bytes 0-6. By copying all
@ -96,12 +95,9 @@ static int parse_value(const char *buf, struct asycii_info *info,
/*
* Convert the textual number representation to a float, and
* an exponent. Apply sanity checks (optional sign, digits and
* dot expected here, exclusively).
* an exponent.
*/
endp = NULL;
*result = strtof(valp, &endp);
if (endp == NULL || *endp != '\0') {
if (sr_atof_ascii(valp, result) != SR_OK) {
info->is_invalid = TRUE;
sr_spew("%s(), cannot convert number", __func__);
return SR_ERR_DATA;
@ -184,32 +180,32 @@ static void parse_flags(const char *buf, struct asycii_info *info)
/* Scan for the measurement unit. */
sr_spew("%s(): scanning unit, buffer [%s]", __func__, u);
if (strncmp(u, "A", strlen("A")) == 0) {
if (g_str_has_prefix(u, "A")) {
u += strlen("A");
info->is_ampere = TRUE;
} else if (strncmp(u, "VA", strlen("VA")) == 0) {
} else if (g_str_has_prefix(u, "VA")) {
u += strlen("VA");
info->is_volt_ampere = TRUE;
} else if (strncmp(u, "V", strlen("V")) == 0) {
} else if (g_str_has_prefix(u, "V")) {
u += strlen("V");
info->is_volt = TRUE;
} else if (strncmp(u, "ohm", strlen("ohm")) == 0) {
} else if (g_str_has_prefix(u, "ohm")) {
u += strlen("ohm");
info->is_resistance = TRUE;
info->is_ohm = TRUE;
} else if (strncmp(u, "F", strlen("F")) == 0) {
} else if (g_str_has_prefix(u, "F")) {
u += strlen("F");
info->is_capacitance = TRUE;
info->is_farad = TRUE;
} else if (strncmp(u, "dB", strlen("dB")) == 0) {
} else if (g_str_has_prefix(u, "dB")) {
u += strlen("dB");
info->is_gain = TRUE;
info->is_decibel = TRUE;
} else if (strncmp(u, "Hz", strlen("Hz")) == 0) {
} else if (g_str_has_prefix(u, "Hz")) {
u += strlen("Hz");
info->is_frequency = TRUE;
info->is_hertz = TRUE;
} else if (strncmp(u, "%", strlen("%")) == 0) {
} else if (g_str_has_prefix(u, "%")) {
u += strlen("%");
info->is_duty_cycle = TRUE;
if (*u == '+') {
@ -221,7 +217,7 @@ static void parse_flags(const char *buf, struct asycii_info *info)
} else {
info->is_invalid = TRUE;
}
} else if (strncmp(u, "Cnt", strlen("Cnt")) == 0) {
} else if (g_str_has_prefix(u, "Cnt")) {
u += strlen("Cnt");
info->is_pulse_count = TRUE;
info->is_unitless = TRUE;
@ -234,7 +230,7 @@ static void parse_flags(const char *buf, struct asycii_info *info)
} else {
info->is_invalid = TRUE;
}
} else if (strncmp(u, "s", strlen("s")) == 0) {
} else if (g_str_has_prefix(u, "s")) {
u += strlen("s");
info->is_pulse_width = TRUE;
info->is_seconds = TRUE;
@ -255,19 +251,19 @@ static void parse_flags(const char *buf, struct asycii_info *info)
/* Scan for additional flags. */
sr_spew("%s(): scanning flags, buffer [%s]", __func__, u);
if (strncmp(u, "ac+dc", strlen("ac+dc")) == 0) {
if (g_str_has_prefix(u, "ac+dc")) {
u += strlen("ac+dc");
info->is_ac_and_dc = TRUE;
} else if (strncmp(u, "ac", strlen("ac")) == 0) {
} else if (g_str_has_prefix(u, "ac")) {
u += strlen("ac");
info->is_ac = TRUE;
} else if (strncmp(u, "dc", strlen("dc")) == 0) {
} else if (g_str_has_prefix(u, "dc")) {
u += strlen("dc");
info->is_dc = TRUE;
} else if (strncmp(u, "d", strlen("d")) == 0) {
} else if (g_str_has_prefix(u, "d")) {
u += strlen("d");
info->is_diode = TRUE;
} else if (strncmp(u, "Pk", strlen("Pk")) == 0) {
} else if (g_str_has_prefix(u, "Pk")) {
u += strlen("Pk");
if (*u == '+') {
u++;
@ -278,7 +274,7 @@ static void parse_flags(const char *buf, struct asycii_info *info)
} else {
info->is_invalid = TRUE;
}
} else if (strcmp(u, "") == 0) {
} else if (*u == '\0') {
/* Absence of any flags is acceptable. */
} else {
/* Presence of unknown flags is not. */