7 #include <libxml/parser.h>
8 #include <libxml/tree.h>
13 * Some silly typedefs to make our units very explicit.
15 * Also, the units are chosen so that values can be expressible as
16 * integers, so that we never have FP rounding issues. And they
17 * are small enough that converting to/from imperial units doesn't
20 * We also strive to make '0' a meaningless number saying "not
21 * initialized", since many values are things that may not have
22 * been reported (eg tank pressure or temperature from dive
23 * computers that don't support them). But sometimes -1 is an even
24 * more explicit way of saying "not there".
26 * Thus "millibar" for pressure, for example, or "millikelvin" for
27 * temperatures. Doing temperatures in celsius or fahrenheit would
28 * make for loss of precision when converting from one to the other,
29 * and using millikelvin is SI-like but also means that a temperature
30 * of '0' is clearly just a missing temperature or tank pressure.
32 * Also strive to use units that can not possibly be mistaken for a
33 * valid value in a "normal" system without conversion. If the max
34 * depth of a dive is '20000', you probably didn't convert from mm on
35 * output, or if the max depth gets reported as "0.2ft" it was either
36 * a really boring dive, or there was some missing input conversion,
37 * and a 60-ft dive got recorded as 60mm.
39 * Doing these as "structs containing value" means that we always
40 * have to explicitly write out those units in order to get at the
41 * actual value. So there is hopefully little fear of using a value
42 * in millikelvin as Fahrenheit by mistake.
44 * We don't actually use these all yet, so maybe they'll change, but
45 * I made a number of types as guidelines.
86 static int to_feet(depth_t depth)
88 return depth.mm * 0.00328084 + 0.5;
91 static int to_C(temperature_t temp)
95 return (temp.mkelvin - 273150) / 1000;
98 static int to_PSI(pressure_t pressure)
100 return pressure.mbar * 0.0145037738 + 0.5;
106 temperature_t temperature;
107 pressure_t tankpressure;
113 depth_t maxdepth, meandepth;
114 duration_t duration, surfacetime;
116 temperature_t airtemp, watertemp;
117 pressure_t beginning_pressure, end_pressure;
119 struct sample sample[];
122 static void record_dive(struct dive *dive)
128 tm = gmtime(&dive->when);
130 printf("Dive %d with %d samples at %02d:%02d:%02d %04d-%02d-%02d\n",
132 tm->tm_hour, tm->tm_min, tm->tm_sec,
133 tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
134 for (i = 0; i < dive->samples; i++) {
135 struct sample *s = dive->sample + i;
137 printf("%4d:%02d: %3d ft, %2d C, %4d PSI\n",
138 s->time.seconds / 60,
139 s->time.seconds % 60,
141 to_C(s->temperature),
142 to_PSI(s->tankpressure));
146 static void nonmatch(const char *type, const char *fullname, const char *name, char *buffer)
149 printf("Unable to match %s '(%.*s)%s' (%s)\n", type,
150 (int) (name - fullname), fullname, name,
155 static const char *last_part(const char *name)
157 const char *p = strrchr(name, '.');
158 return p ? p+1 : name;
161 typedef void (*matchfn_t)(char *buffer, void *);
163 static int match(const char *pattern, const char *name, matchfn_t fn, char *buf, void *data)
165 if (strcasecmp(pattern, name))
172 * Dive info as it is being built up..
174 static int alloc_samples;
175 static struct dive *dive;
176 static struct sample *sample;
179 static time_t utc_mktime(struct tm *tm)
181 static const int mdays[] = {
182 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
184 int year = tm->tm_year;
185 int month = tm->tm_mon;
186 int day = tm->tm_mday;
188 /* First normalize relative to 1900 */
191 else if (year > 1900)
194 /* Normalized to Jan 1, 1970: unix time */
197 if (year < 0 || year > 129) /* algo only works for 1970-2099 */
199 if (month < 0 || month > 11) /* array bounds */
201 if (month < 2 || (year + 2) % 4)
203 if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
205 return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
206 tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
209 static void divedate(char *buffer, void *_when)
212 time_t *when = _when;
214 if (sscanf(buffer, "%d.%d.%d", &d, &m, &y) == 3) {
218 if (tm.tm_sec | tm.tm_min | tm.tm_hour)
219 *when = utc_mktime(&tm);
224 static void divetime(char *buffer, void *_when)
227 time_t *when = _when;
229 if (sscanf(buffer, "%d:%d:%d", &h, &m, &s) >= 2) {
234 *when = utc_mktime(&tm);
239 /* Libdivecomputer: "2011-03-20 10:22:38" */
240 static void divedatetime(char *buffer, void *_when)
244 time_t *when = _when;
246 if (sscanf(buffer, "%d-%d-%d %d:%d:%d",
247 &y, &m, &d, &hr, &min, &sec) == 6) {
254 *when = utc_mktime(&tm);
270 static enum number_type integer_or_float(char *buffer, union int_or_float *res)
276 /* Integer or floating point? */
277 val = strtol(buffer, &end, 10);
278 if (val < 0 || end == buffer)
281 /* Looks like it might be floating point? */
284 fp = strtod(buffer, &end);
295 static void pressure(char *buffer, void *_press)
297 pressure_t *pressure = _press;
298 union int_or_float val;
300 switch (integer_or_float(buffer, &val)) {
302 /* Maybe it's in Bar? */
303 if (val.fp < 500.0) {
304 pressure->mbar = val.fp * 1000;
307 printf("Unknown fractional pressure reading %s\n", buffer);
312 * Random integer? Maybe in PSI? Or millibar already?
314 * We assume that 5 bar is a ridiculous tank pressure,
315 * so if it's smaller than 5000, it's in PSI..
318 pressure->mbar = val.i * 68.95;
321 pressure->mbar = val.i;
324 printf("Strange pressure reading %s\n", buffer);
329 static void depth(char *buffer, void *_depth)
331 depth_t *depth = _depth;
332 union int_or_float val;
334 switch (integer_or_float(buffer, &val)) {
335 /* Integer values are probably in feet */
337 depth->mm = 304.8 * val.i;
339 /* Float? Probably meters.. */
341 depth->mm = val.fp * 1000;
344 printf("Strange depth reading %s\n", buffer);
349 static void temperature(char *buffer, void *_temperature)
351 temperature_t *temperature = _temperature;
352 union int_or_float val;
354 switch (integer_or_float(buffer, &val)) {
355 /* C or F? Who knows? Let's default to Celsius */
360 /* Ignore zero. It means "none" */
365 temperature->mkelvin = (val.fp + 273.16) * 1000;
369 if (val.fp < 212.0) {
370 temperature->mkelvin = (val.fp + 459.67) * 5000/9;
373 /* Kelvin or already millikelvin */
376 temperature->mkelvin = val.fp;
379 printf("Strange temperature reading %s\n", buffer);
384 static void sampletime(char *buffer, void *_time)
386 duration_t *time = _time;
387 union int_or_float val;
389 switch (integer_or_float(buffer, &val)) {
391 time->seconds = val.i;
394 printf("Strange sample time reading %s\n", buffer);
399 /* We're in samples - try to convert the random xml value to something useful */
400 static void try_to_fill_sample(struct sample *sample, const char *name, char *buf)
402 const char *last = last_part(name);
404 if (match("pressure", last, pressure, buf, &sample->tankpressure))
406 if (match("cylpress", last, pressure, buf, &sample->tankpressure))
408 if (match("depth", last, depth, buf, &sample->depth))
410 if (match("temperature", last, temperature, buf, &sample->temperature))
412 if (match("sampletime", last, sampletime, buf, &sample->time))
414 if (match("time", last, sampletime, buf, &sample->time))
417 nonmatch("sample", name, last, buf);
420 /* We're in the top-level dive xml. Try to convert whatever value to a dive value */
421 static void try_to_fill_dive(struct dive *dive, const char *name, char *buf)
423 const char *last = last_part(name);
425 if (match("date", last, divedate, buf, &dive->when))
427 if (match("time", last, divetime, buf, &dive->when))
429 if (match("datetime", last, divedatetime, buf, &dive->when))
431 nonmatch("dive", name, last, buf);
434 static unsigned int dive_size(int samples)
436 return sizeof(struct dive) + samples*sizeof(struct sample);
440 * File boundaries are dive boundaries. But sometimes there are
441 * multiple dives per file, so there can be other events too that
442 * trigger a "new dive" marker and you may get some nesting due
443 * to that. Just ignore nesting levels.
445 static void dive_start(void)
453 size = dive_size(alloc_samples);
457 memset(dive, 0, size);
458 memset(&tm, 0, sizeof(tm));
461 static void dive_end(void)
469 static void sample_start(void)
476 if (nr >= alloc_samples) {
479 alloc_samples = (alloc_samples * 3)/2 + 10;
480 size = dive_size(alloc_samples);
481 dive = realloc(dive, size);
485 sample = dive->sample + nr;
486 memset(sample, 0, sizeof(*sample));
489 static void sample_end(void)
497 static void entry(const char *name, int size, const char *raw)
499 char *buf = malloc(size+1);
503 memcpy(buf, raw, size);
506 try_to_fill_sample(sample, name, buf);
510 try_to_fill_dive(dive, name, buf);
515 static const char *nodename(xmlNode *node, char *buf, int len)
518 if (!node || !node->name)
526 const char *name = node->name;
527 int i = strlen(name);
529 unsigned char c = name[i];
535 if (!node || !node->name)
545 static void visit_one_node(xmlNode *node)
548 const unsigned char *content;
549 char buffer[MAXNAME];
552 content = node->content;
556 /* Trim whitespace at beginning */
557 while (isspace(*content))
560 /* Trim whitespace at end */
561 len = strlen(content);
562 while (len && isspace(content[len-1]))
568 /* Don't print out the node name if it is "text" */
569 if (!strcmp(node->name, "text"))
572 name = nodename(node, buffer, sizeof(buffer));
574 entry(name, len, content);
577 static void traverse(xmlNode *node)
581 for (n = node; n; n = n->next) {
582 /* XML from libdivecomputer: 'dive' per new dive */
583 if (!strcmp(n->name, "dive")) {
585 traverse(n->children);
591 * At least both libdivecomputer and Suunto
594 * Well - almost. Ignore case.
596 if (!strcasecmp(n->name, "sample")) {
598 traverse(n->children);
603 /* Anything else - just visit it and recurse */
605 traverse(n->children);
609 static void parse(const char *filename)
613 doc = xmlReadFile(filename, NULL, 0);
615 fprintf(stderr, "Failed to parse '%s'.\n", filename);
620 traverse(xmlDocGetRootElement(doc));
626 static void parse_argument(const char *arg)
628 const char *p = arg+1;
636 fprintf(stderr, "Bad argument '%s'\n", arg);
642 int main(int argc, char **argv)
648 for (i = 1; i < argc; i++) {
649 const char *a = argv[i];