+static void divedate(char *buffer, void *_when)
+{
+ int d,m,y;
+ time_t *when = _when;
+
+ if (sscanf(buffer, "%d.%d.%d", &d, &m, &y) == 3) {
+ tm.tm_year = y;
+ tm.tm_mon = m-1;
+ tm.tm_mday = d;
+ if (tm.tm_sec | tm.tm_min | tm.tm_hour)
+ *when = utc_mktime(&tm);
+ }
+ free(buffer);
+}
+
+static void divetime(char *buffer, void *_when)
+{
+ int h,m,s = 0;
+ time_t *when = _when;
+
+ if (sscanf(buffer, "%d:%d:%d", &h, &m, &s) >= 2) {
+ tm.tm_hour = h;
+ tm.tm_min = m;
+ tm.tm_sec = s;
+ if (tm.tm_year)
+ *when = utc_mktime(&tm);
+ }
+ free(buffer);
+}
+
+union int_or_float {
+ long i;
+ double fp;
+};
+
+enum number_type {
+ NEITHER,
+ INTEGER,
+ FLOAT
+};
+
+static enum number_type integer_or_float(char *buffer, union int_or_float *res)
+{
+ char *end;
+ long val;
+ double fp;
+
+ /* Integer or floating point? */
+ val = strtol(buffer, &end, 10);
+ if (val < 0 || end == buffer)
+ return NEITHER;
+
+ /* Looks like it might be floating point? */
+ if (*end == '.') {
+ errno = 0;
+ fp = strtod(buffer, &end);
+ if (!errno) {
+ res->fp = fp;
+ return FLOAT;
+ }
+ }
+
+ res->i = val;
+ return INTEGER;
+}
+
+static void pressure(char *buffer, void *_press)
+{
+ pressure_t *pressure = _press;
+ union int_or_float val;
+
+ switch (integer_or_float(buffer, &val)) {
+ case FLOAT:
+ /* Maybe it's in Bar? */
+ if (val.fp < 500.0) {
+ pressure->mbar = val.fp * 1000;
+ break;
+ }
+ printf("Unknown fractional pressure reading %s\n", buffer);
+ break;
+
+ case INTEGER:
+ /*
+ * Random integer? Maybe in PSI? Or millibar already?
+ *
+ * We assume that 5 bar is a ridiculous tank pressure,
+ * so if it's smaller than 5000, it's in PSI..
+ */
+ if (val.i < 5000) {
+ pressure->mbar = val.i * 68.95;
+ break;
+ }
+ pressure->mbar = val.i;
+ break;
+ default:
+ printf("Strange pressure reading %s\n", buffer);
+ }
+ free(buffer);
+}
+
+static void depth(char *buffer, void *_depth)
+{
+ depth_t *depth = _depth;
+ union int_or_float val;
+
+ switch (integer_or_float(buffer, &val)) {
+ /* Integer values are probably in feet */
+ case INTEGER:
+ depth->mm = 304.8 * val.i;
+ break;
+ /* Float? Probably meters.. */
+ case FLOAT:
+ depth->mm = val.fp * 1000;
+ break;
+ default:
+ printf("Strange depth reading %s\n", buffer);
+ }
+ free(buffer);
+}
+
+static void temperature(char *buffer, void *_temperature)
+{
+ temperature_t *temperature = _temperature;
+ union int_or_float val;
+
+ switch (integer_or_float(buffer, &val)) {
+ /* C or F? Who knows? Let's default to Celsius */
+ case INTEGER:
+ val.fp = val.i;
+ /* Fallthrough */
+ case FLOAT:
+ /* Ignore zero. It means "none" */
+ if (!val.fp)
+ break;
+ /* Celsius */
+ if (val.fp < 50.0) {
+ temperature->mkelvin = (val.fp + 273.16) * 1000;
+ break;
+ }
+ /* Fahrenheit */
+ if (val.fp < 212.0) {
+ temperature->mkelvin = (val.fp + 459.67) * 5000/9;
+ break;
+ }
+ /* Kelvin or already millikelvin */
+ if (val.fp < 1000.0)
+ val.fp *= 1000;
+ temperature->mkelvin = val.fp;
+ break;
+ default:
+ printf("Strange temperature reading %s\n", buffer);
+ }
+ free(buffer);
+}
+
+static void sampletime(char *buffer, void *_time)
+{
+ duration_t *time = _time;
+ union int_or_float val;
+
+ switch (integer_or_float(buffer, &val)) {
+ /* C or F? Who knows? Let's default to Celsius */
+ case INTEGER:
+ time->seconds = val.i * 1000;
+ break;
+ default:
+ printf("Strange sample time reading %s\n", buffer);
+ }
+ free(buffer);
+}
+
+/* We're in samples - try to convert the random xml value to something useful */
+static void try_to_fill_sample(struct sample *sample, const char *name, char *buf)
+{
+ const char *last = last_part(name);
+
+ if (match("pressure", last, pressure, buf, &sample->tankpressure))
+ return;
+ if (match("cylpress", last, pressure, buf, &sample->tankpressure))
+ return;
+ if (match("depth", last, depth, buf, &sample->depth))
+ return;
+ if (match("temperature", last, temperature, buf, &sample->temperature))
+ return;
+ if (match("sampletime", last, sampletime, buf, &sample->time))
+ return;
+ if (match("time", last, sampletime, buf, &sample->time))
+ return;
+
+ nonmatch("sample", name, last, buf);
+}
+
+/* We're in the top-level dive xml. Try to convert whatever value to a dive value */
+static void try_to_fill_dive(struct dive *dive, const char *name, char *buf)
+{
+ const char *last = last_part(name);
+
+ if (match("date", last, divedate, buf, &dive->when))
+ return;
+ if (match("time", last, divetime, buf, &dive->when))
+ return;
+ nonmatch("dive", name, last, buf);
+}
+
+static unsigned int dive_size(int samples)
+{
+ return sizeof(struct dive) + samples*sizeof(struct sample);
+}
+
+/*
+ * File boundaries are dive boundaries. But sometimes there are
+ * multiple dives per file, so there can be other events too that
+ * trigger a "new dive" marker and you may get some nesting due
+ * to that. Just ignore nesting levels.
+ */
+static void dive_start(void)
+{
+ unsigned int size;
+
+ if (dive)
+ return;
+
+ alloc_samples = 5;
+ size = dive_size(alloc_samples);
+ dive = malloc(size);
+ if (!dive)
+ exit(1);
+ memset(dive, 0, size);
+ memset(&tm, 0, sizeof(tm));
+}
+
+static void dive_end(void)
+{
+ if (!dive)
+ return;
+ record_dive(dive);
+ dive = NULL;
+}
+
+static void sample_start(void)
+{
+ int nr;
+
+ if (!dive)
+ return;
+ nr = dive->samples;
+ if (nr >= alloc_samples) {
+ unsigned int size;
+
+ alloc_samples = (alloc_samples * 3)/2 + 10;
+ size = dive_size(alloc_samples);
+ dive = realloc(dive, size);
+ if (!dive)
+ return;
+ }
+ sample = dive->sample + nr;
+ memset(sample, 0, sizeof(*sample));
+}
+
+static void sample_end(void)
+{
+ sample = NULL;
+ if (!dive)
+ return;
+ dive->samples++;
+}
+
+static void entry(const char *name, int size, const char *raw)
+{
+ char *buf = malloc(size+1);
+
+ if (!buf)
+ return;
+ memcpy(buf, raw, size);
+ buf[size] = 0;
+ if (sample) {
+ try_to_fill_sample(sample, name, buf);
+ return;
+ }
+ if (dive) {
+ try_to_fill_dive(dive, name, buf);
+ return;
+ }
+}
+
+static const char *nodename(xmlNode *node, char *buf, int len)
+{
+
+ if (!node || !node->name)
+ return "root";
+
+ buf += len;
+ *--buf = 0;
+ len--;
+
+ for(;;) {
+ const char *name = node->name;
+ int i = strlen(name);
+ while (--i >= 0) {
+ unsigned char c = name[i];
+ *--buf = tolower(c);
+ if (!--len)
+ return buf;
+ }
+ node = node->parent;
+ if (!node || !node->name)
+ return buf;
+ *--buf = '.';
+ if (!--len)
+ return buf;
+ }
+}
+
+#define MAXNAME 64
+
+static void visit_one_node(xmlNode *node)
+{
+ int len;
+ const unsigned char *content;
+ char buffer[MAXNAME];
+ const char *name;
+
+ content = node->content;
+ if (!content)
+ return;
+
+ /* Trim whitespace at beginning */
+ while (isspace(*content))
+ content++;
+
+ /* Trim whitespace at end */
+ len = strlen(content);
+ while (len && isspace(content[len-1]))
+ len--;
+
+ if (!len)
+ return;
+
+ /* Don't print out the node name if it is "text" */
+ if (!strcmp(node->name, "text"))
+ node = node->parent;
+
+ name = nodename(node, buffer, sizeof(buffer));
+
+ entry(name, len, content);
+}
+
+static void traverse(xmlNode *node)