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);
199 static enum number_type integer_or_float(char *buffer, union int_or_float *res)
205 /* Integer or floating point? */
206 val = strtol(buffer, &end, 10);
207 if (val < 0 || end == buffer)
210 /* Looks like it might be floating point? */
213 fp = strtod(buffer, &end);
224 static void pressure(char *buffer, void *_press)
226 pressure_t *pressure = _press;
227 union int_or_float val;
229 switch (integer_or_float(buffer, &val)) {
231 /* Maybe it's in Bar? */
232 if (val.fp < 500.0) {
233 pressure->mbar = val.fp * 1000 + 0.5;
236 printf("Unknown fractional pressure reading %s\n", buffer);
241 * Random integer? Maybe in PSI? Or millibar already?
243 * We assume that 5 bar is a ridiculous tank pressure,
244 * so if it's smaller than 5000, it's in PSI..
247 pressure->mbar = val.i * 68.95;
250 pressure->mbar = val.i;
253 printf("Strange pressure reading %s\n", buffer);
258 static void depth(char *buffer, void *_depth)
260 depth_t *depth = _depth;
261 union int_or_float val;
263 switch (integer_or_float(buffer, &val)) {
264 /* All values are probably in meters */
269 depth->mm = val.fp * 1000 + 0.5;
272 printf("Strange depth reading %s\n", buffer);
277 static void temperature(char *buffer, void *_temperature)
279 temperature_t *temperature = _temperature;
280 union int_or_float val;
282 switch (integer_or_float(buffer, &val)) {
283 /* C or F? Who knows? Let's default to Celsius */
288 /* Ignore zero. It means "none" */
293 temperature->mkelvin = (val.fp + 273.15) * 1000 + 0.5;
297 if (val.fp < 212.0) {
298 temperature->mkelvin = (val.fp + 459.67) * 5000/9;
301 /* Kelvin or already millikelvin */
304 temperature->mkelvin = val.fp;
307 printf("Strange temperature reading %s\n", buffer);
312 static void sampletime(char *buffer, void *_time)
316 duration_t *time = _time;
318 i = sscanf(buffer, "%d:%d", &min, &sec);
325 time->seconds = sec + min*60;
328 printf("Strange sample time reading %s\n", buffer);
333 static void duration(char *buffer, void *_time)
335 sampletime(buffer, _time);
338 static void percent(char *buffer, void *_fraction)
340 fraction_t *fraction = _fraction;
341 union int_or_float val;
343 switch (integer_or_float(buffer, &val)) {
344 /* C or F? Who knows? Let's default to Celsius */
350 fraction->permille = val.fp * 10 + 0.5;
354 printf("Strange percentage reading %s\n", buffer);
360 static void gasmix(char *buffer, void *_fraction)
362 /* libdivecomputer does negative percentages. */
365 if (gasmix_index < MAX_MIXES)
366 percent(buffer, _fraction);
369 static void gasmix_nitrogen(char *buffer, void *_gasmix)
371 /* Ignore n2 percentages. There's no value in them. */
374 static void utf8_string(char *buffer, void *_res)
376 *(char **)_res = buffer;
380 * Uemis water_pressure. In centibar. And when converting to
381 * depth, I'm just going to always use saltwater, because I
382 * think "true depth" is just stupid. From a diving standpoint,
383 * "true depth" is pretty much completely pointless, unless
384 * you're doing some kind of underwater surveying work.
386 * So I give water depths in "pressure depth", always assuming
387 * salt water. So one atmosphere per 10m.
389 static void water_pressure(char *buffer, void *_depth)
391 depth_t *depth = _depth;
392 union int_or_float val;
395 switch (integer_or_float(buffer, &val)) {
400 switch (units.pressure) {
402 /* It's actually centibar! */
403 atm = (val.fp / 100) / 1.01325;
406 /* I think it's centiPSI too. Crazy. */
407 atm = (val.fp / 100) * 0.0680459639;
411 depth->mm = 10000 * atm;
414 fprintf(stderr, "Strange water pressure '%s'\n", buffer);
419 #define MATCH(pattern, fn, dest) \
420 match(pattern, strlen(pattern), name, len, fn, buf, dest)
422 static int uemis_fill_sample(struct sample *sample, const char *name, int len, char *buf)
424 return MATCH(".reading.dive_time", sampletime, &sample->time) ||
425 MATCH(".reading.water_pressure", water_pressure, &sample->depth);
428 /* We're in samples - try to convert the random xml value to something useful */
429 static void try_to_fill_sample(struct sample *sample, const char *name, char *buf)
431 int len = strlen(name);
433 start_match("sample", name, buf);
434 if (MATCH(".sample.pressure", pressure, &sample->tankpressure))
436 if (MATCH(".sample.cylpress", pressure, &sample->tankpressure))
438 if (MATCH(".sample.depth", depth, &sample->depth))
440 if (MATCH(".sample.temp", temperature, &sample->temperature))
442 if (MATCH(".sample.temperature", temperature, &sample->temperature))
444 if (MATCH(".sample.sampletime", sampletime, &sample->time))
446 if (MATCH(".sample.time", sampletime, &sample->time))
450 if (uemis_fill_sample(sample, name, len, buf))
454 nonmatch("sample", name, buf);
458 * Crazy suunto xml. Look at how those o2/he things match up.
460 static int suunto_dive_match(struct dive *dive, const char *name, int len, char *buf)
462 return MATCH(".o2pct", percent, &dive->gasmix[0].o2) ||
463 MATCH(".hepct_0", percent, &dive->gasmix[0].he) ||
464 MATCH(".o2pct_2", percent, &dive->gasmix[1].o2) ||
465 MATCH(".hepct_1", percent, &dive->gasmix[1].he) ||
466 MATCH(".o2pct_3", percent, &dive->gasmix[2].o2) ||
467 MATCH(".hepct_2", percent, &dive->gasmix[2].he) ||
468 MATCH(".o2pct_4", percent, &dive->gasmix[3].o2) ||
469 MATCH(".hepct_3", percent, &dive->gasmix[3].he);
472 static int buffer_value(char *buffer)
474 int val = atoi(buffer);
479 static void uemis_length_unit(char *buffer, void *_unused)
481 units.length = buffer_value(buffer) ? FEET : METERS;
484 static void uemis_volume_unit(char *buffer, void *_unused)
486 units.volume = buffer_value(buffer) ? CUFT : LITER;
489 static void uemis_pressure_unit(char *buffer, void *_unused)
491 units.pressure = buffer_value(buffer) ? PSI : BAR;
494 static void uemis_temperature_unit(char *buffer, void *_unused)
496 units.temperature = buffer_value(buffer) ? FAHRENHEIT : CELSIUS;
499 static void uemis_weight_unit(char *buffer, void *_unused)
501 units.weight = buffer_value(buffer) ? LBS : KG;
504 static void uemis_time_unit(char *buffer, void *_unused)
508 static void uemis_date_unit(char *buffer, void *_unused)
512 /* Modified julian day, yay! */
513 static void uemis_date_time(char *buffer, void *_when)
515 time_t *when = _when;
516 union int_or_float val;
518 switch (integer_or_float(buffer, &val)) {
523 *when = (val.fp - 40587.5) * 86400;
526 fprintf(stderr, "Strange julian date: %s", buffer);
532 * Uemis doesn't know time zones. You need to do them as
533 * minutes, not hours.
535 * But that's ok, we don't track timezones yet either. We
536 * just turn everything into "localtime expressed as UTC".
538 static void uemis_time_zone(char *buffer, void *_when)
540 time_t *when = _when;
541 signed char tz = atoi(buffer);
546 static int uemis_dive_match(struct dive *dive, const char *name, int len, char *buf)
548 return MATCH(".units.length", uemis_length_unit, &units) ||
549 MATCH(".units.volume", uemis_volume_unit, &units) ||
550 MATCH(".units.pressure", uemis_pressure_unit, &units) ||
551 MATCH(".units.temperature", uemis_temperature_unit, &units) ||
552 MATCH(".units.weight", uemis_weight_unit, &units) ||
553 MATCH(".units.time", uemis_time_unit, &units) ||
554 MATCH(".units.date", uemis_date_unit, &units) ||
555 MATCH(".date_time", uemis_date_time, &dive->when) ||
556 MATCH(".time_zone", uemis_time_zone, &dive->when);
559 /* We're in the top-level dive xml. Try to convert whatever value to a dive value */
560 static void try_to_fill_dive(struct dive *dive, const char *name, char *buf)
562 int len = strlen(name);
564 start_match("dive", name, buf);
565 if (MATCH(".date", divedate, &dive->when))
567 if (MATCH(".time", divetime, &dive->when))
569 if (MATCH(".datetime", divedatetime, &dive->when))
571 if (MATCH(".maxdepth", depth, &dive->maxdepth))
573 if (MATCH(".meandepth", depth, &dive->meandepth))
575 if (MATCH(".duration", duration, &dive->duration))
577 if (MATCH(".divetime", duration, &dive->duration))
579 if (MATCH(".divetimesec", duration, &dive->duration))
581 if (MATCH(".surfacetime", duration, &dive->surfacetime))
583 if (MATCH(".airtemp", temperature, &dive->airtemp))
585 if (MATCH(".watertemp", temperature, &dive->watertemp))
587 if (MATCH(".cylinderstartpressure", pressure, &dive->beginning_pressure))
589 if (MATCH(".cylinderendpressure", pressure, &dive->end_pressure))
591 if (MATCH(".location", utf8_string, &dive->location))
593 if (MATCH(".notes", utf8_string, &dive->notes))
596 if (MATCH(".o2", gasmix, &dive->gasmix[gasmix_index].o2))
598 if (MATCH(".n2", gasmix_nitrogen, &dive->gasmix[gasmix_index]))
600 if (MATCH(".he", gasmix, &dive->gasmix[gasmix_index].he))
603 /* Suunto XML files are some crazy sh*t. */
604 if (suunto && suunto_dive_match(dive, name, len, buf))
607 if (uemis && uemis_dive_match(dive, name, len, buf))
610 nonmatch("dive", name, buf);
613 static unsigned int dive_size(int samples)
615 return sizeof(struct dive) + samples*sizeof(struct sample);
619 * File boundaries are dive boundaries. But sometimes there are
620 * multiple dives per file, so there can be other events too that
621 * trigger a "new dive" marker and you may get some nesting due
622 * to that. Just ignore nesting levels.
624 static void dive_start(void)
632 size = dive_size(alloc_samples);
636 memset(dive, 0, size);
637 memset(&tm, 0, sizeof(tm));
640 static char *generate_name(struct dive *dive)
644 char buffer[256], *p;
646 tm = gmtime(&dive->when);
648 len = snprintf(buffer, sizeof(buffer),
652 tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
653 tm->tm_hour, tm->tm_min, tm->tm_sec,
654 to_feet(dive->maxdepth), dive->duration.seconds / 60);
658 memcpy(p, buffer, len+1);
662 static void sanitize_gasmix(struct dive *dive)
666 for (i = 0; i < MAX_MIXES; i++) {
667 gasmix_t *mix = dive->gasmix+i;
670 o2 = mix->o2.permille;
671 he = mix->he.permille;
673 /* Regular air: leave empty */
677 /* 20.9% or 21% O2 is just air */
678 if (o2 >= 209 && o2 <= 210) {
679 mix->o2.permille = 0;
685 if (o2 <= 1000 && he <= 1000 && o2+he <= 1000)
687 fprintf(stderr, "Odd gasmix: %d O2 %d He\n", o2, he);
688 memset(mix, 0, sizeof(*mix));
692 static void dive_end(void)
697 dive->name = generate_name(dive);
698 sanitize_gasmix(dive);
704 static void suunto_start(void)
710 static void suunto_end(void)
715 static void uemis_start(void)
721 static void uemis_end(void)
725 static void event_start(void)
729 static void event_end(void)
734 static void gasmix_start(void)
738 static void gasmix_end(void)
743 static void sample_start(void)
750 if (nr >= alloc_samples) {
753 alloc_samples = (alloc_samples * 3)/2 + 10;
754 size = dive_size(alloc_samples);
755 dive = realloc(dive, size);
759 sample = dive->sample + nr;
760 memset(sample, 0, sizeof(*sample));
764 static void sample_end(void)
769 if (sample->time.seconds > dive->duration.seconds) {
770 if (sample->depth.mm)
771 dive->duration = sample->time;
774 if (sample->depth.mm > dive->maxdepth.mm)
775 dive->maxdepth.mm = sample->depth.mm;
777 if (sample->temperature.mkelvin) {
778 if (!dive->watertemp.mkelvin || dive->watertemp.mkelvin > sample->temperature.mkelvin)
779 dive->watertemp = sample->temperature;
786 static void entry(const char *name, int size, const char *raw)
788 char *buf = malloc(size+1);
792 memcpy(buf, raw, size);
795 try_to_fill_sample(sample, name, buf);
799 try_to_fill_dive(dive, name, buf);
804 static const char *nodename(xmlNode *node, char *buf, int len)
806 if (!node || !node->name)
814 const char *name = node->name;
815 int i = strlen(name);
817 unsigned char c = name[i];
823 if (!node || !node->name)
833 static void visit_one_node(xmlNode *node)
836 const unsigned char *content;
837 char buffer[MAXNAME];
840 content = node->content;
844 /* Trim whitespace at beginning */
845 while (isspace(*content))
848 /* Trim whitespace at end */
849 len = strlen(content);
850 while (len && isspace(content[len-1]))
856 /* Don't print out the node name if it is "text" */
857 if (!strcmp(node->name, "text"))
860 name = nodename(node, buffer, sizeof(buffer));
862 entry(name, len, content);
865 static void traverse(xmlNode *root);
867 static void traverse_properties(xmlNode *node)
871 for (p = node->properties; p; p = p->next)
872 traverse(p->children);
875 static void visit(xmlNode *n)
878 traverse_properties(n);
879 traverse(n->children);
883 * I'm sure this could be done as some fancy DTD rules.
884 * It's just not worth the headache.
886 static struct nesting {
888 void (*start)(void), (*end)(void);
890 { "dive", dive_start, dive_end },
891 { "SUUNTO", suunto_start, suunto_end },
892 { "sample", sample_start, sample_end },
893 { "SAMPLE", sample_start, sample_end },
894 { "reading", sample_start, sample_end },
895 { "event", event_start, event_end },
896 { "gasmix", gasmix_start, gasmix_end },
897 { "pre_dive", uemis_start, uemis_end },
901 static void traverse(xmlNode *root)
905 for (n = root; n; n = n->next) {
906 struct nesting *rule = nesting;
909 if (!strcmp(rule->name, n->name))
912 } while (rule->name);
923 static void reset_all(void)
926 * We reset the units for each file. You'd think it was
927 * a per-dive property, but I'm not going to trust people
928 * to do per-dive setup. If the xml does have per-dive
929 * data within one file, we might have to reset it per
930 * dive for that format.
937 void parse_xml_file(const char *filename)
941 doc = xmlReadFile(filename, NULL, 0);
943 fprintf(stderr, "Failed to parse '%s'.\n", filename);
949 traverse(xmlDocGetRootElement(doc));
955 void parse_xml_init(void)