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)
93 return (temp.mkelvin + 272150) / 1000;
96 static int to_PSI(pressure_t pressure)
98 return pressure.mbar * 0.0145037738 + 0.5;
104 temperature_t temperature;
105 pressure_t tankpressure;
111 depth_t maxdepth, meandepth;
112 duration_t duration, surfacetime;
114 temperature_t airtemp, watertemp;
115 pressure_t beginning_pressure, end_pressure;
117 struct sample sample[];
120 static void record_dive(struct dive *dive)
126 tm = gmtime(&dive->when);
128 printf("Dive %d with %d samples at %02d:%02d:%02d %04d-%02d-%02d\n",
130 tm->tm_hour, tm->tm_min, tm->tm_sec,
131 tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
132 for (i = 0; i < dive->samples; i++) {
133 struct sample *s = dive->sample + i;
135 printf("%4d:%02d: %3d ft, %2d C, %4d PSI\n",
136 s->time.seconds / 60,
137 s->time.seconds % 60,
139 to_C(s->temperature),
140 to_PSI(s->tankpressure));
144 static void nonmatch(const char *type, const char *fullname, const char *name, char *buffer)
147 printf("Unable to match %s '(%.*s)%s' (%s)\n", type,
148 (int) (name - fullname), fullname, name,
153 static const char *last_part(const char *name)
155 const char *p = strrchr(name, '.');
156 return p ? p+1 : name;
159 typedef void (*matchfn_t)(char *buffer, void *);
161 static int match(const char *pattern, const char *name, matchfn_t fn, char *buf, void *data)
163 if (strcasecmp(pattern, name))
170 * Dive info as it is being built up..
172 static int alloc_samples;
173 static struct dive *dive;
174 static struct sample *sample;
177 static time_t utc_mktime(struct tm *tm)
179 static const int mdays[] = {
180 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
182 int year = tm->tm_year;
183 int month = tm->tm_mon;
184 int day = tm->tm_mday;
188 else if (year > 1900)
191 /* Normalized to Jan 1, 1970: unix time */
194 if (year < 0 || year > 129) /* algo only works for 1970-2099 */
196 if (month < 0 || month > 11) /* array bounds */
198 if (month < 2 || (year + 2) % 4)
200 if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
202 return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
203 tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
206 static void divedate(char *buffer, void *_when)
209 time_t *when = _when;
211 if (sscanf(buffer, "%d.%d.%d", &d, &m, &y) == 3) {
215 if (tm.tm_sec | tm.tm_min | tm.tm_hour)
216 *when = utc_mktime(&tm);
221 static void divetime(char *buffer, void *_when)
224 time_t *when = _when;
226 if (sscanf(buffer, "%d:%d:%d", &h, &m, &s) >= 2) {
231 *when = utc_mktime(&tm);
247 static enum number_type integer_or_float(char *buffer, union int_or_float *res)
253 /* Integer or floating point? */
254 val = strtol(buffer, &end, 10);
255 if (val < 0 || end == buffer)
258 /* Looks like it might be floating point? */
261 fp = strtod(buffer, &end);
272 static void pressure(char *buffer, void *_press)
274 pressure_t *pressure = _press;
275 union int_or_float val;
277 switch (integer_or_float(buffer, &val)) {
279 /* Maybe it's in Bar? */
280 if (val.fp < 500.0) {
281 pressure->mbar = val.fp * 1000;
284 printf("Unknown fractional pressure reading %s\n", buffer);
289 * Random integer? Maybe in PSI? Or millibar already?
291 * We assume that 5 bar is a ridiculous tank pressure,
292 * so if it's smaller than 5000, it's in PSI..
295 pressure->mbar = val.i * 68.95;
298 pressure->mbar = val.i;
301 printf("Strange pressure reading %s\n", buffer);
306 static void depth(char *buffer, void *_depth)
308 depth_t *depth = _depth;
309 union int_or_float val;
311 switch (integer_or_float(buffer, &val)) {
312 /* Integer values are probably in feet */
314 depth->mm = 304.8 * val.i;
316 /* Float? Probably meters.. */
318 depth->mm = val.fp * 1000;
321 printf("Strange depth reading %s\n", buffer);
326 static void temperature(char *buffer, void *_temperature)
328 temperature_t *temperature = _temperature;
329 union int_or_float val;
331 switch (integer_or_float(buffer, &val)) {
332 /* C or F? Who knows? Let's default to Celsius */
337 /* Ignore zero. It means "none" */
342 temperature->mkelvin = (val.fp + 273.16) * 1000;
346 if (val.fp < 212.0) {
347 temperature->mkelvin = (val.fp + 459.67) * 5000/9;
350 /* Kelvin or already millikelvin */
353 temperature->mkelvin = val.fp;
356 printf("Strange temperature reading %s\n", buffer);
361 static void sampletime(char *buffer, void *_time)
363 duration_t *time = _time;
364 union int_or_float val;
366 switch (integer_or_float(buffer, &val)) {
368 time->seconds = val.i;
371 printf("Strange sample time reading %s\n", buffer);
376 /* We're in samples - try to convert the random xml value to something useful */
377 static void try_to_fill_sample(struct sample *sample, const char *name, char *buf)
379 const char *last = last_part(name);
381 if (match("pressure", last, pressure, buf, &sample->tankpressure))
383 if (match("cylpress", last, pressure, buf, &sample->tankpressure))
385 if (match("depth", last, depth, buf, &sample->depth))
387 if (match("temperature", last, temperature, buf, &sample->temperature))
389 if (match("sampletime", last, sampletime, buf, &sample->time))
391 if (match("time", last, sampletime, buf, &sample->time))
394 nonmatch("sample", name, last, buf);
397 /* We're in the top-level dive xml. Try to convert whatever value to a dive value */
398 static void try_to_fill_dive(struct dive *dive, const char *name, char *buf)
400 const char *last = last_part(name);
402 if (match("date", last, divedate, buf, &dive->when))
404 if (match("time", last, divetime, buf, &dive->when))
406 nonmatch("dive", name, last, buf);
409 static unsigned int dive_size(int samples)
411 return sizeof(struct dive) + samples*sizeof(struct sample);
415 * File boundaries are dive boundaries. But sometimes there are
416 * multiple dives per file, so there can be other events too that
417 * trigger a "new dive" marker and you may get some nesting due
418 * to that. Just ignore nesting levels.
420 static void dive_start(void)
428 size = dive_size(alloc_samples);
432 memset(dive, 0, size);
433 memset(&tm, 0, sizeof(tm));
436 static void dive_end(void)
444 static void sample_start(void)
451 if (nr >= alloc_samples) {
454 alloc_samples = (alloc_samples * 3)/2 + 10;
455 size = dive_size(alloc_samples);
456 dive = realloc(dive, size);
460 sample = dive->sample + nr;
461 memset(sample, 0, sizeof(*sample));
464 static void sample_end(void)
472 static void entry(const char *name, int size, const char *raw)
474 char *buf = malloc(size+1);
478 memcpy(buf, raw, size);
481 try_to_fill_sample(sample, name, buf);
485 try_to_fill_dive(dive, name, buf);
490 static const char *nodename(xmlNode *node, char *buf, int len)
493 if (!node || !node->name)
501 const char *name = node->name;
502 int i = strlen(name);
504 unsigned char c = name[i];
510 if (!node || !node->name)
520 static void visit_one_node(xmlNode *node)
523 const unsigned char *content;
524 char buffer[MAXNAME];
527 content = node->content;
531 /* Trim whitespace at beginning */
532 while (isspace(*content))
535 /* Trim whitespace at end */
536 len = strlen(content);
537 while (len && isspace(content[len-1]))
543 /* Don't print out the node name if it is "text" */
544 if (!strcmp(node->name, "text"))
547 name = nodename(node, buffer, sizeof(buffer));
549 entry(name, len, content);
552 static void traverse(xmlNode *node)
556 for (n = node; n; n = n->next) {
557 /* XML from libdivecomputer: 'dive' per new dive */
558 if (!strcmp(n->name, "dive")) {
560 traverse(n->children);
566 * At least both libdivecomputer and Suunto
569 * Well - almost. Ignore case.
571 if (!strcasecmp(n->name, "sample")) {
573 traverse(n->children);
578 /* Anything else - just visit it and recurse */
580 traverse(n->children);
584 static void parse(const char *filename)
588 doc = xmlReadFile(filename, NULL, 0);
590 fprintf(stderr, "Failed to parse '%s'.\n", filename);
595 traverse(xmlDocGetRootElement(doc));
601 static void parse_argument(const char *arg)
603 const char *p = arg+1;
611 fprintf(stderr, "Bad argument '%s'\n", arg);
617 int main(int argc, char **argv)
623 for (i = 1; i < argc; i++) {
624 const char *a = argv[i];