/* * This file is part of the sigrok project. * * Copyright (C) 2010 Uwe Hermann * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "sigrok.h" #include "sigrok-internal.h" /** * 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". * * @param samplerate The samplerate in Hz. * * @return A g_try_malloc()ed string representation of the samplerate value, * or NULL upon errors. The caller is responsible to g_free() the * memory. */ SR_API char *sr_samplerate_string(uint64_t samplerate) { char *o; int r; /* Allocate enough for a uint64_t as string + " GHz". */ if (!(o = g_try_malloc0(30 + 1))) { sr_err("strutil: %s: o malloc failed", __func__); return NULL; } if (samplerate >= SR_GHZ(1)) r = snprintf(o, 30, "%" PRIu64 " GHz", samplerate / 1000000000); else if (samplerate >= SR_MHZ(1)) r = snprintf(o, 30, "%" PRIu64 " MHz", samplerate / 1000000); else if (samplerate >= SR_KHZ(1)) r = snprintf(o, 30, "%" PRIu64 " kHz", samplerate / 1000); else r = snprintf(o, 30, "%" PRIu64 " Hz", samplerate); if (r < 0) { /* Something went wrong... */ g_free(o); return NULL; } return o; } /** * Convert a numeric frequency value to the "natural" string representation * of its period. * * E.g. a value of 3000000 would be converted to "3 us", 20000 to "50 ms". * * @param frequency The frequency in Hz. * * @return A g_try_malloc()ed string representation of the frequency value, * or NULL upon errors. The caller is responsible to g_free() the * memory. */ SR_API char *sr_period_string(uint64_t frequency) { char *o; int r; /* Allocate enough for a uint64_t as string + " ms". */ if (!(o = g_try_malloc0(30 + 1))) { sr_err("strutil: %s: o malloc failed", __func__); return NULL; } if (frequency >= SR_GHZ(1)) r = snprintf(o, 30, "%" PRIu64 " ns", frequency / 1000000000); else if (frequency >= SR_MHZ(1)) r = snprintf(o, 30, "%" PRIu64 " us", frequency / 1000000); else if (frequency >= SR_KHZ(1)) r = snprintf(o, 30, "%" PRIu64 " ms", frequency / 1000); else r = snprintf(o, 30, "%" PRIu64 " s", frequency); if (r < 0) { /* Something went wrong... */ g_free(o); return NULL; } return o; } /** * TODO * * @param dev TODO * @param triggerstring TODO * * @return TODO */ SR_API char **sr_parse_triggerstring(struct sr_dev *dev, const char *triggerstring) { GSList *l; struct sr_probe *probe; int max_probes, probenum, i; char **tokens, **triggerlist, *trigger, *tc, *trigger_types; gboolean error; max_probes = g_slist_length(dev->probes); error = FALSE; if (!(triggerlist = g_try_malloc0(max_probes * sizeof(char *)))) { sr_err("session file: %s: metafile malloc failed", __func__); return NULL; } tokens = g_strsplit(triggerstring, ",", max_probes); trigger_types = dev->plugin->dev_info_get(0, SR_DI_TRIGGER_TYPES); if (trigger_types == NULL) return NULL; for (i = 0; tokens[i]; i++) { if (tokens[i][0] < '0' || tokens[i][0] > '9') { /* Named probe */ probenum = 0; for (l = dev->probes; l; l = l->next) { probe = (struct sr_probe *)l->data; if (probe->enabled && !strncmp(probe->name, tokens[i], strlen(probe->name))) { probenum = probe->index; break; } } } else { probenum = strtol(tokens[i], NULL, 10); } if (probenum < 1 || probenum > max_probes) { sr_err("Invalid probe.\n"); error = TRUE; break; } if ((trigger = strchr(tokens[i], '='))) { for (tc = ++trigger; *tc; tc++) { if (strchr(trigger_types, *tc) == NULL) { sr_err("Unsupported trigger type " "'%c'\n", *tc); error = TRUE; break; } } if (!error) triggerlist[probenum - 1] = g_strdup(trigger); } } g_strfreev(tokens); if (error) { for (i = 0; i < max_probes; i++) g_free(triggerlist[i]); g_free(triggerlist); triggerlist = NULL; } return triggerlist; } /** * 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. * * @param sizestring A string containing a (decimal) size value. * @param size Pointer to uint64_t which will contain the string's size value. * * @return SR_OK upon success, SR_ERR upon errors. */ SR_API int sr_parse_sizestring(const char *sizestring, uint64_t *size) { int multiplier, done; char *s; *size = strtoull(sizestring, &s, 10); multiplier = 0; done = FALSE; while (s && *s && multiplier == 0 && !done) { switch (*s) { case ' ': break; case 'k': case 'K': multiplier = SR_KHZ(1); break; case 'm': case 'M': multiplier = SR_MHZ(1); break; case 'g': case 'G': multiplier = SR_GHZ(1); break; default: done = TRUE; s--; } s++; } if (multiplier > 0) *size *= multiplier; if (*s && strcasecmp(s, "Hz")) return SR_ERR; return SR_OK; } /** * 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. * * @param timestring A string containing a (decimal) time value. * @return The string's time value as uint64_t, in milliseconds. * * TODO: Error handling. * TODO: Add support for "m" (minutes) and others. * TODO: picoseconds? * TODO: Allow both lower-case and upper-case. */ SR_API uint64_t sr_parse_timestring(const char *timestring) { uint64_t time_msec; char *s; time_msec = strtoull(timestring, &s, 10); if (time_msec == 0 && s == timestring) return 0; if (s && *s) { while (*s == ' ') s++; if (!strcmp(s, "s")) time_msec *= 1000; else if (!strcmp(s, "ms")) ; /* redundant */ else return 0; } return time_msec; } SR_API gboolean sr_parse_boolstring(const char *boolstr) { if (!boolstr) return FALSE; if (!g_strcasecmp(boolstr, "true") || !g_strcasecmp(boolstr, "yes") || !g_strcasecmp(boolstr, "on") || !g_strcasecmp(boolstr, "1")) return TRUE; return FALSE; }