7 #include <libxml/parser.h>
8 #include <libxml/tree.h>
14 struct dive_table dive_table;
17 * Add a dive into the dive_table array
19 static void record_dive(struct dive *dive)
21 int nr = dive_table.nr, allocated = dive_table.allocated;
22 struct dive **dives = dive_table.dives;
24 if (nr >= allocated) {
25 allocated = (nr + 32) * 3 / 2;
26 dives = realloc(dives, allocated * sizeof(struct dive *));
29 dive_table.dives = dives;
30 dive_table.allocated = allocated;
36 static void start_match(const char *type, const char *name, char *buffer)
39 printf("Matching %s '%s' (%s)\n",
43 static void nonmatch(const char *type, const char *name, char *buffer)
46 printf("Unable to match %s '%s' (%s)\n",
51 typedef void (*matchfn_t)(char *buffer, void *);
53 static int match(const char *pattern, int plen,
54 const char *name, int nlen,
55 matchfn_t fn, char *buf, void *data)
59 if (memcmp(pattern, name + nlen - plen, plen))
66 * We keep our internal data in well-specified units, but
67 * the input may come in some random format. This keeps track
68 * of the incoming units.
71 enum { METERS, FEET } length;
72 enum { LITER, CUFT } volume;
73 enum { BAR, PSI } pressure;
74 enum { CELSIUS, FAHRENHEIT } temperature;
75 enum { KG, LBS } weight;
78 /* We're going to default to SI units for input */
79 static const struct units SI_units = {
83 .temperature = CELSIUS,
88 * Dive info as it is being built up..
90 static int alloc_samples;
91 static struct dive *dive;
92 static struct sample *sample;
94 static int suunto, uemis;
95 static int event_index, gasmix_index;
97 static time_t utc_mktime(struct tm *tm)
99 static const int mdays[] = {
100 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
102 int year = tm->tm_year;
103 int month = tm->tm_mon;
104 int day = tm->tm_mday;
106 /* First normalize relative to 1900 */
109 else if (year > 1900)
112 /* Normalized to Jan 1, 1970: unix time */
115 if (year < 0 || year > 129) /* algo only works for 1970-2099 */
117 if (month < 0 || month > 11) /* array bounds */
119 if (month < 2 || (year + 2) % 4)
121 if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
123 return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
124 tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
127 static void divedate(char *buffer, void *_when)
130 time_t *when = _when;
133 success = tm.tm_sec | tm.tm_min | tm.tm_hour;
134 if (sscanf(buffer, "%d.%d.%d", &d, &m, &y) == 3) {
138 } else if (sscanf(buffer, "%d-%d-%d", &y, &m, &d) == 3) {
143 fprintf(stderr, "Unable to parse date '%s'\n", buffer);
148 *when = utc_mktime(&tm);
153 static void divetime(char *buffer, void *_when)
156 time_t *when = _when;
158 if (sscanf(buffer, "%d:%d:%d", &h, &m, &s) >= 2) {
163 *when = utc_mktime(&tm);
168 /* Libdivecomputer: "2011-03-20 10:22:38" */
169 static void divedatetime(char *buffer, void *_when)
173 time_t *when = _when;
175 if (sscanf(buffer, "%d-%d-%d %d:%d:%d",
176 &y, &m, &d, &hr, &min, &sec) == 6) {
183 *when = utc_mktime(&tm);
197 static enum number_type integer_or_float(char *buffer, union int_or_float *res)
203 /* Integer or floating point? */
204 val = strtol(buffer, &end, 10);
205 if (val < 0 || end == buffer)
208 /* Looks like it might be floating point? */
211 fp = strtod(buffer, &end);
222 static void pressure(char *buffer, void *_press)
225 pressure_t *pressure = _press;
226 union int_or_float val;
228 switch (integer_or_float(buffer, &val)) {
230 switch (units.pressure) {
232 /* Assume mbar, but if it's really small, it's bar */
238 mbar = val.fp * 68.95;
241 if (mbar > 5 && mbar < 500000) {
242 pressure->mbar = mbar + 0.5;
247 printf("Strange pressure reading %s\n", buffer);
252 static void depth(char *buffer, void *_depth)
254 depth_t *depth = _depth;
255 union int_or_float val;
257 switch (integer_or_float(buffer, &val)) {
259 switch (units.length) {
261 depth->mm = val.fp * 1000 + 0.5;
264 depth->mm = val.fp * 304.8 + 0.5;
269 printf("Strange depth reading %s\n", buffer);
274 static void temperature(char *buffer, void *_temperature)
276 temperature_t *temperature = _temperature;
277 union int_or_float val;
279 switch (integer_or_float(buffer, &val)) {
281 /* Ignore zero. It means "none" */
285 switch (units.temperature) {
287 temperature->mkelvin = (val.fp + 273.15) * 1000 + 0.5;
290 temperature->mkelvin = (val.fp + 459.67) * 5000/9;
295 printf("Strange temperature reading %s\n", buffer);
300 static void sampletime(char *buffer, void *_time)
304 duration_t *time = _time;
306 i = sscanf(buffer, "%d:%d", &min, &sec);
313 time->seconds = sec + min*60;
316 printf("Strange sample time reading %s\n", buffer);
321 static void duration(char *buffer, void *_time)
323 sampletime(buffer, _time);
326 static void percent(char *buffer, void *_fraction)
328 fraction_t *fraction = _fraction;
329 union int_or_float val;
331 switch (integer_or_float(buffer, &val)) {
334 fraction->permille = val.fp * 10 + 0.5;
338 printf("Strange percentage reading %s\n", buffer);
344 static void gasmix(char *buffer, void *_fraction)
346 /* libdivecomputer does negative percentages. */
349 if (gasmix_index < MAX_MIXES)
350 percent(buffer, _fraction);
353 static void gasmix_nitrogen(char *buffer, void *_gasmix)
355 /* Ignore n2 percentages. There's no value in them. */
358 static void utf8_string(char *buffer, void *_res)
360 *(char **)_res = buffer;
364 * Uemis water_pressure. In centibar. And when converting to
365 * depth, I'm just going to always use saltwater, because I
366 * think "true depth" is just stupid. From a diving standpoint,
367 * "true depth" is pretty much completely pointless, unless
368 * you're doing some kind of underwater surveying work.
370 * So I give water depths in "pressure depth", always assuming
371 * salt water. So one atmosphere per 10m.
373 static void water_pressure(char *buffer, void *_depth)
375 depth_t *depth = _depth;
376 union int_or_float val;
379 switch (integer_or_float(buffer, &val)) {
381 switch (units.pressure) {
383 /* It's actually centibar! */
384 atm = (val.fp / 100) / 1.01325;
387 /* I think it's centiPSI too. Crazy. */
388 atm = (val.fp / 100) * 0.0680459639;
392 depth->mm = 10000 * atm;
395 fprintf(stderr, "Strange water pressure '%s'\n", buffer);
400 #define MATCH(pattern, fn, dest) \
401 match(pattern, strlen(pattern), name, len, fn, buf, dest)
403 static int uemis_fill_sample(struct sample *sample, const char *name, int len, char *buf)
405 return MATCH(".reading.dive_time", sampletime, &sample->time) ||
406 MATCH(".reading.water_pressure", water_pressure, &sample->depth);
409 /* We're in samples - try to convert the random xml value to something useful */
410 static void try_to_fill_sample(struct sample *sample, const char *name, char *buf)
412 int len = strlen(name);
414 start_match("sample", name, buf);
415 if (MATCH(".sample.pressure", pressure, &sample->tankpressure))
417 if (MATCH(".sample.cylpress", pressure, &sample->tankpressure))
419 if (MATCH(".sample.depth", depth, &sample->depth))
421 if (MATCH(".sample.temp", temperature, &sample->temperature))
423 if (MATCH(".sample.temperature", temperature, &sample->temperature))
425 if (MATCH(".sample.sampletime", sampletime, &sample->time))
427 if (MATCH(".sample.time", sampletime, &sample->time))
431 if (uemis_fill_sample(sample, name, len, buf))
435 nonmatch("sample", name, buf);
439 * Crazy suunto xml. Look at how those o2/he things match up.
441 static int suunto_dive_match(struct dive *dive, const char *name, int len, char *buf)
443 return MATCH(".o2pct", percent, &dive->gasmix[0].o2) ||
444 MATCH(".hepct_0", percent, &dive->gasmix[0].he) ||
445 MATCH(".o2pct_2", percent, &dive->gasmix[1].o2) ||
446 MATCH(".hepct_1", percent, &dive->gasmix[1].he) ||
447 MATCH(".o2pct_3", percent, &dive->gasmix[2].o2) ||
448 MATCH(".hepct_2", percent, &dive->gasmix[2].he) ||
449 MATCH(".o2pct_4", percent, &dive->gasmix[3].o2) ||
450 MATCH(".hepct_3", percent, &dive->gasmix[3].he);
453 static int buffer_value(char *buffer)
455 int val = atoi(buffer);
460 static void uemis_length_unit(char *buffer, void *_unused)
462 units.length = buffer_value(buffer) ? FEET : METERS;
465 static void uemis_volume_unit(char *buffer, void *_unused)
467 units.volume = buffer_value(buffer) ? CUFT : LITER;
470 static void uemis_pressure_unit(char *buffer, void *_unused)
472 units.pressure = buffer_value(buffer) ? PSI : BAR;
475 static void uemis_temperature_unit(char *buffer, void *_unused)
477 units.temperature = buffer_value(buffer) ? FAHRENHEIT : CELSIUS;
480 static void uemis_weight_unit(char *buffer, void *_unused)
482 units.weight = buffer_value(buffer) ? LBS : KG;
485 static void uemis_time_unit(char *buffer, void *_unused)
489 static void uemis_date_unit(char *buffer, void *_unused)
493 /* Modified julian day, yay! */
494 static void uemis_date_time(char *buffer, void *_when)
496 time_t *when = _when;
497 union int_or_float val;
499 switch (integer_or_float(buffer, &val)) {
501 *when = (val.fp - 40587.5) * 86400;
504 fprintf(stderr, "Strange julian date: %s", buffer);
510 * Uemis doesn't know time zones. You need to do them as
511 * minutes, not hours.
513 * But that's ok, we don't track timezones yet either. We
514 * just turn everything into "localtime expressed as UTC".
516 static void uemis_time_zone(char *buffer, void *_when)
518 time_t *when = _when;
519 signed char tz = atoi(buffer);
524 static int uemis_dive_match(struct dive *dive, const char *name, int len, char *buf)
526 return MATCH(".units.length", uemis_length_unit, &units) ||
527 MATCH(".units.volume", uemis_volume_unit, &units) ||
528 MATCH(".units.pressure", uemis_pressure_unit, &units) ||
529 MATCH(".units.temperature", uemis_temperature_unit, &units) ||
530 MATCH(".units.weight", uemis_weight_unit, &units) ||
531 MATCH(".units.time", uemis_time_unit, &units) ||
532 MATCH(".units.date", uemis_date_unit, &units) ||
533 MATCH(".date_time", uemis_date_time, &dive->when) ||
534 MATCH(".time_zone", uemis_time_zone, &dive->when);
537 /* We're in the top-level dive xml. Try to convert whatever value to a dive value */
538 static void try_to_fill_dive(struct dive *dive, const char *name, char *buf)
540 int len = strlen(name);
542 start_match("dive", name, buf);
543 if (MATCH(".date", divedate, &dive->when))
545 if (MATCH(".time", divetime, &dive->when))
547 if (MATCH(".datetime", divedatetime, &dive->when))
549 if (MATCH(".maxdepth", depth, &dive->maxdepth))
551 if (MATCH(".meandepth", depth, &dive->meandepth))
553 if (MATCH(".duration", duration, &dive->duration))
555 if (MATCH(".divetime", duration, &dive->duration))
557 if (MATCH(".divetimesec", duration, &dive->duration))
559 if (MATCH(".surfacetime", duration, &dive->surfacetime))
561 if (MATCH(".airtemp", temperature, &dive->airtemp))
563 if (MATCH(".watertemp", temperature, &dive->watertemp))
565 if (MATCH(".cylinderstartpressure", pressure, &dive->beginning_pressure))
567 if (MATCH(".cylinderendpressure", pressure, &dive->end_pressure))
569 if (MATCH(".location", utf8_string, &dive->location))
571 if (MATCH(".notes", utf8_string, &dive->notes))
574 if (MATCH(".o2", gasmix, &dive->gasmix[gasmix_index].o2))
576 if (MATCH(".n2", gasmix_nitrogen, &dive->gasmix[gasmix_index]))
578 if (MATCH(".he", gasmix, &dive->gasmix[gasmix_index].he))
581 /* Suunto XML files are some crazy sh*t. */
582 if (suunto && suunto_dive_match(dive, name, len, buf))
585 if (uemis && uemis_dive_match(dive, name, len, buf))
588 nonmatch("dive", name, buf);
591 static unsigned int dive_size(int samples)
593 return sizeof(struct dive) + samples*sizeof(struct sample);
597 * File boundaries are dive boundaries. But sometimes there are
598 * multiple dives per file, so there can be other events too that
599 * trigger a "new dive" marker and you may get some nesting due
600 * to that. Just ignore nesting levels.
602 static void dive_start(void)
610 size = dive_size(alloc_samples);
614 memset(dive, 0, size);
615 memset(&tm, 0, sizeof(tm));
618 static char *generate_name(struct dive *dive)
622 char buffer[256], *p;
624 tm = gmtime(&dive->when);
626 len = snprintf(buffer, sizeof(buffer),
630 tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
631 tm->tm_hour, tm->tm_min, tm->tm_sec,
632 to_feet(dive->maxdepth), dive->duration.seconds / 60);
636 memcpy(p, buffer, len+1);
640 static void sanitize_gasmix(struct dive *dive)
644 for (i = 0; i < MAX_MIXES; i++) {
645 gasmix_t *mix = dive->gasmix+i;
648 o2 = mix->o2.permille;
649 he = mix->he.permille;
651 /* Regular air: leave empty */
655 /* 20.9% or 21% O2 is just air */
656 if (o2 >= 209 && o2 <= 210) {
657 mix->o2.permille = 0;
663 if (o2 <= 1000 && he <= 1000 && o2+he <= 1000)
665 fprintf(stderr, "Odd gasmix: %d O2 %d He\n", o2, he);
666 memset(mix, 0, sizeof(*mix));
670 static void dive_end(void)
675 dive->name = generate_name(dive);
676 sanitize_gasmix(dive);
682 static void suunto_start(void)
688 static void suunto_end(void)
693 static void uemis_start(void)
699 static void uemis_end(void)
703 static void event_start(void)
707 static void event_end(void)
712 static void gasmix_start(void)
716 static void gasmix_end(void)
721 static void sample_start(void)
728 if (nr >= alloc_samples) {
731 alloc_samples = (alloc_samples * 3)/2 + 10;
732 size = dive_size(alloc_samples);
733 dive = realloc(dive, size);
737 sample = dive->sample + nr;
738 memset(sample, 0, sizeof(*sample));
742 static void sample_end(void)
747 if (sample->time.seconds > dive->duration.seconds) {
748 if (sample->depth.mm)
749 dive->duration = sample->time;
752 if (sample->depth.mm > dive->maxdepth.mm)
753 dive->maxdepth.mm = sample->depth.mm;
755 if (sample->temperature.mkelvin) {
756 if (!dive->watertemp.mkelvin || dive->watertemp.mkelvin > sample->temperature.mkelvin)
757 dive->watertemp = sample->temperature;
764 static void entry(const char *name, int size, const char *raw)
766 char *buf = malloc(size+1);
770 memcpy(buf, raw, size);
773 try_to_fill_sample(sample, name, buf);
777 try_to_fill_dive(dive, name, buf);
782 static const char *nodename(xmlNode *node, char *buf, int len)
784 if (!node || !node->name)
792 const char *name = node->name;
793 int i = strlen(name);
795 unsigned char c = name[i];
801 if (!node || !node->name)
811 static void visit_one_node(xmlNode *node)
814 const unsigned char *content;
815 char buffer[MAXNAME];
818 content = node->content;
822 /* Trim whitespace at beginning */
823 while (isspace(*content))
826 /* Trim whitespace at end */
827 len = strlen(content);
828 while (len && isspace(content[len-1]))
834 /* Don't print out the node name if it is "text" */
835 if (!strcmp(node->name, "text"))
838 name = nodename(node, buffer, sizeof(buffer));
840 entry(name, len, content);
843 static void traverse(xmlNode *root);
845 static void traverse_properties(xmlNode *node)
849 for (p = node->properties; p; p = p->next)
850 traverse(p->children);
853 static void visit(xmlNode *n)
856 traverse_properties(n);
857 traverse(n->children);
861 * I'm sure this could be done as some fancy DTD rules.
862 * It's just not worth the headache.
864 static struct nesting {
866 void (*start)(void), (*end)(void);
868 { "dive", dive_start, dive_end },
869 { "SUUNTO", suunto_start, suunto_end },
870 { "sample", sample_start, sample_end },
871 { "SAMPLE", sample_start, sample_end },
872 { "reading", sample_start, sample_end },
873 { "event", event_start, event_end },
874 { "gasmix", gasmix_start, gasmix_end },
875 { "pre_dive", uemis_start, uemis_end },
879 static void traverse(xmlNode *root)
883 for (n = root; n; n = n->next) {
884 struct nesting *rule = nesting;
887 if (!strcmp(rule->name, n->name))
890 } while (rule->name);
901 static void reset_all(void)
904 * We reset the units for each file. You'd think it was
905 * a per-dive property, but I'm not going to trust people
906 * to do per-dive setup. If the xml does have per-dive
907 * data within one file, we might have to reset it per
908 * dive for that format.
915 void parse_xml_file(const char *filename)
919 doc = xmlReadFile(filename, NULL, 0);
921 fprintf(stderr, "Failed to parse '%s'.\n", filename);
927 traverse(xmlDocGetRootElement(doc));
933 void parse_xml_init(void)