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https://github.com/MarekZegare4/MeshCore-Solo.git
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43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
 
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#pragma once
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#include <cstring>
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#include <cstdio>
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#include <ctime>
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#include <cstdint>
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// Expands {loc} and {time} placeholders in tmpl into out (out_len bytes).
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// lat/lon — GPS coordinates; gps_valid must be true for {loc} to show coords
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// utc_ts — unix timestamp from RTC (0 or <1e9 = no valid time)
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// tz_hours — local timezone offset from UTC (-12..+14)
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inline void expandMsg(const char* tmpl, char* out, int out_len,
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double lat, double lon, bool gps_valid,
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uint32_t utc_ts, int8_t tz_hours) {
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int oi = 0;
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const char* p = tmpl;
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while (*p && oi < out_len - 1) {
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if (strncmp(p, "{loc}", 5) == 0) {
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char lb[32];
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if (gps_valid)
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snprintf(lb, sizeof(lb), "%.5f,%.5f", lat, lon);
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else
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strcpy(lb, "no GPS");
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int ll = strlen(lb);
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if (oi + ll < out_len - 1) { memcpy(out + oi, lb, ll); oi += ll; }
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p += 5;
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} else if (strncmp(p, "{time}", 6) == 0) {
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if (utc_ts > 1000000000UL) {
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uint32_t local_ts = utc_ts + (int32_t)tz_hours * 3600;
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time_t t = (time_t)local_ts;
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struct tm* ti = gmtime(&t);
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char tb[8];
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snprintf(tb, sizeof(tb), "%02d:%02d", ti->tm_hour, ti->tm_min);
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int tl = strlen(tb);
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if (oi + tl < out_len - 1) { memcpy(out + oi, tb, tl); oi += tl; }
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}
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p += 6;
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} else {
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out[oi++] = *p++;
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}
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}
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out[oi] = '\0';
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}
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