X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=parse.c;h=58d446db099c46f408a3c27d35bdfec99e249d40;hb=feec55504084baf022517d39e72431b4d361a217;hp=78d84a4f4c4b2650dbc6036e4d5314a3a433d461;hpb=e1a939ac626dda5cf97122cb650c553b2d1fcb2a;p=ext%2Fsubsurface.git

diff --git a/parse.c b/parse.c
index 78d84a4..58d446d 100644
--- a/parse.c
+++ b/parse.c
@@ -1,114 +1,45 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <time.h>
 #include <libxml/parser.h>
 #include <libxml/tree.h>
 
-/*
- * Some silly typedefs to make our units very explicit.
- *
- * Also, the units are chosen so that values can be expressible as
- * integers, so that we never have FP rounding issues. And they
- * are small enough that converting to/from imperial units doesn't
- * really matter.
- *
- * We also strive to make '0' a meaningless number saying "not
- * initialized", since many values are things that may not have
- * been reported (eg tank pressure or temperature from dive
- * computers that don't support them). But sometimes -1 is an even
- * more explicit way of saying "not there".
- *
- * Thus "millibar" for pressure, for example, or "millikelvin" for
- * temperatures. Doing temperatures in celsius or fahrenheit would
- * make for loss of precision when converting from one to the other,
- * and using millikelvin is SI-like but also means that a temperature
- * of '0' is clearly just a missing temperature or tank pressure.
- *
- * Also strive to use units that can not possibly be mistaken for a
- * valid value in a "normal" system without conversion. If the max
- * depth of a dive is '20000', you probably didn't convert from mm on
- * output, or if the max depth gets reported as "0.2ft" it was either
- * a really boring dive, or there was some missing input conversion,
- * and a 60-ft dive got recorded as 60mm.
- *
- * Doing these as "structs containing value" means that we always
- * have to explicitly write out those units in order to get at the
- * actual value. So there is hopefully little fear of using a value
- * in millikelvin as Fahrenheit by mistake.
- *
- * We don't actually use these all yet, so maybe they'll change, but
- * I made a number of types as guidelines.
- */
-typedef struct {
-	int seconds;
-} duration_t;
-
-typedef struct {
-	int mm;
-} depth_t;
-
-typedef struct {
-	int mbar;
-} pressure_t;
-
-typedef struct {
-	int mkelvin;
-} temperature_t;
-
-typedef struct {
-	int mliter;
-} volume_t;
-
-typedef struct {
-	int permille;
-} fraction_t;
-
-typedef struct {
-	int grams;
-} weight_t;
-
-typedef struct {
-	fraction_t o2;
-	fraction_t n2;
-	fraction_t he2;
-} gasmix_t;
-
-typedef struct {
-	volume_t size;
-	pressure_t pressure;
-} tank_type_t;
-
-struct sample {
-	duration_t time;
-	depth_t depth;
-	temperature_t temperature;
-	pressure_t tankpressure;
-	int tankindex;
-};
+#include "dive.h"
 
-struct dive {
-	time_t when;
-	depth_t maxdepth, meandepth;
-	duration_t duration, surfacetime;
-	depth_t visibility;
-	temperature_t airtemp, watertemp;
-	pressure_t beginning_pressure, end_pressure;
-	int samples;
-	struct sample sample[];
-};
+int verbose;
 
+struct dive_table dive_table;
+
+/*
+ * Add a dive into the dive_table array
+ */
 static void record_dive(struct dive *dive)
 {
-	static int nr;
-
-	printf("Recording dive %d with %d samples\n", ++nr, dive->samples);
+	int nr = dive_table.nr, allocated = dive_table.allocated;
+	struct dive **dives = dive_table.dives;
+
+	if (nr >= allocated) {
+		allocated = (nr + 32) * 3 / 2;
+		dives = realloc(dives, allocated * sizeof(struct dive *));
+		if (!dives)
+			exit(1);
+		dive_table.dives = dives;
+		dive_table.allocated = allocated;
+	}
+	dives[nr] = dive;
+	dive_table.nr = nr+1;
 }
 
-static void nonmatch(const char *type, const char *fullname, const char *name, int size, const char *buffer)
+static void nonmatch(const char *type, const char *fullname, const char *name, char *buffer)
 {
-	printf("Unable to match %s '(%.*s)%s' (%.*s)\n", type,
-		(int) (name - fullname), fullname, name,
-		size, buffer);
+	if (verbose > 1)
+		printf("Unable to match %s '(%.*s)%s' (%s)\n", type,
+			(int) (name - fullname), fullname, name,
+			buffer);
+	free(buffer);
 }
 
 static const char *last_part(const char *name)
@@ -117,18 +48,14 @@ static const char *last_part(const char *name)
 	return p ? p+1 : name;
 }
 
-/* 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, int size, const char *buffer)
-{
-	const char *last = last_part(name);
-	nonmatch("sample", name, last, size, buffer);
-}
+typedef void (*matchfn_t)(char *buffer, void *);
 
-/* 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, int size, const char *buffer)
+static int match(const char *pattern, const char *name, matchfn_t fn, char *buf, void *data)
 {
-	const char *last = last_part(name);
-	nonmatch("dive", name, last, size, buffer);
+	if (strcasecmp(pattern, name))
+		return 0;
+	fn(buf, data);
+	return 1;
 }
 
 /*
@@ -137,6 +64,304 @@ static void try_to_fill_dive(struct dive *dive, const char *name, int size, cons
 static int alloc_samples;
 static struct dive *dive;
 static struct sample *sample;
+static struct tm tm;
+
+static time_t utc_mktime(struct tm *tm)
+{
+	static const int mdays[] = {
+	    0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
+	};
+	int year = tm->tm_year;
+	int month = tm->tm_mon;
+	int day = tm->tm_mday;
+
+	/* First normalize relative to 1900 */
+	if (year < 70)
+		year += 100;
+	else if (year > 1900)
+		year -= 1900;
+
+	/* Normalized to Jan 1, 1970: unix time */
+	year -= 70;
+
+	if (year < 0 || year > 129) /* algo only works for 1970-2099 */
+		return -1;
+	if (month < 0 || month > 11) /* array bounds */
+		return -1;
+	if (month < 2 || (year + 2) % 4)
+		day--;
+	if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_sec < 0)
+		return -1;
+	return (year * 365 + (year + 1) / 4 + mdays[month] + day) * 24*60*60UL +
+		tm->tm_hour * 60*60 + tm->tm_min * 60 + tm->tm_sec;
+}
+
+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);
+}
+
+/* Libdivecomputer: "2011-03-20 10:22:38" */
+static void divedatetime(char *buffer, void *_when)
+{
+	int y,m,d;
+	int hr,min,sec;
+	time_t *when = _when;
+
+	if (sscanf(buffer, "%d-%d-%d %d:%d:%d",
+		&y, &m, &d, &hr, &min, &sec) == 6) {
+		tm.tm_year = y;
+		tm.tm_mon = m-1;
+		tm.tm_mday = d;
+		tm.tm_hour = hr;
+		tm.tm_min = min;
+		tm.tm_sec = sec;
+		*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)) {
+	/* All values are probably in meters */
+	case INTEGER:
+		val.fp = val.i;
+		/* fallthrough */
+	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)
+{
+	int i;
+	int min, sec;
+	duration_t *time = _time;
+
+	i = sscanf(buffer, "%d:%d", &min, &sec);
+	switch (i) {
+	case 1:
+		sec = min;
+		min = 0;
+	/* fallthrough */
+	case 2:
+		time->seconds = sec + min*60;
+		break;
+	default:
+		printf("Strange sample time reading %s\n", buffer);
+	}
+	free(buffer);
+}
+
+static void duration(char *buffer, void *_time)
+{
+	sampletime(buffer, _time);
+}
+
+static void ignore(char *buffer, void *_time)
+{
+}
+
+/* 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;
+	if (match("datetime", last, divedatetime, buf, &dive->when))
+		return;
+	if (match("maxdepth", last, depth, buf, &dive->maxdepth))
+		return;
+	if (match("meandepth", last, depth, buf, &dive->meandepth))
+		return;
+	if (match("divetime", last, duration, buf, &dive->duration))
+		return;
+	if (match("divetimesec", last, duration, buf, &dive->duration))
+		return;
+	if (match("surfacetime", last, duration, buf, &dive->surfacetime))
+		return;
+	if (match("airtemp", last, temperature, buf, &dive->airtemp))
+		return;
+	if (match("watertemp", last, temperature, buf, &dive->watertemp))
+		return;
+	if (match("cylinderstartpressure", last, pressure, buf, &dive->beginning_pressure))
+		return;
+	if (match("cylinderendpressure", last, pressure, buf, &dive->end_pressure))
+		return;
+	if (match("divenumber", last, ignore, buf, NULL))
+		return;
+	if (match("diveseries", last, ignore, buf, NULL))
+		return;
+	if (match("number", last, ignore, buf, NULL))
+		return;
+	if (match("size", last, ignore, buf, NULL))
+		return;
+	if (match("fingerprint", last, ignore, buf, NULL))
+		return;
+	nonmatch("dive", name, last, buf);
+}
 
 static unsigned int dive_size(int samples)
 {
@@ -153,18 +378,46 @@ 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 char *generate_name(struct dive *dive)
+{
+	int len;
+	struct tm *tm;
+	char buffer[256], *p;
+
+	tm = gmtime(&dive->when);
+
+	len = snprintf(buffer, sizeof(buffer),
+		"%04d-%02d-%02d "
+		"%02d:%02d:%02d "
+		"(%d ft, %d min)",
+		tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+		tm->tm_hour, tm->tm_min, tm->tm_sec,
+		to_feet(dive->maxdepth), dive->duration.seconds / 60);
+	p = malloc(len+1);
+	if (!p)
+		exit(1);
+	memcpy(p, buffer, len+1);
+	return p;
 }
 
 static void dive_end(void)
 {
 	if (!dive)
 		return;
+	if (!dive->name)
+		dive->name = generate_name(dive);
 	record_dive(dive);
 	dive = NULL;
 }
@@ -186,31 +439,46 @@ static void sample_start(void)
 			return;
 	}
 	sample = dive->sample + nr;
+	memset(sample, 0, sizeof(*sample));
 }
 
 static void sample_end(void)
 {
-	sample = NULL;
 	if (!dive)
 		return;
+
+	if (sample->time.seconds > dive->duration.seconds) {
+		if (sample->depth.mm)
+			dive->duration = sample->time;
+	}
+
+	if (sample->depth.mm > dive->maxdepth.mm)
+		dive->maxdepth.mm = sample->depth.mm;
+
+	sample = NULL;
 	dive->samples++;
 }
 
-static void entry(const char *name, int size, const char *buffer)
+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, size, buffer);
+		try_to_fill_sample(sample, name, buf);
 		return;
 	}
 	if (dive) {
-		try_to_fill_dive(dive, name, size, buffer);
+		try_to_fill_dive(dive, name, buf);
 		return;
 	}
 }
 
 static const char *nodename(xmlNode *node, char *buf, int len)
 {
-
 	if (!node || !node->name)
 		return "root";
 
@@ -302,7 +570,7 @@ static void traverse(xmlNode *node)
 	}
 }
 
-static void parse(const char *filename)
+void parse_xml_file(const char *filename)
 {
 	xmlDoc *doc;
 
@@ -319,13 +587,7 @@ static void parse(const char *filename)
 	xmlCleanupParser();
 }
 
-int main(int argc, char **argv)
+void parse_xml_init(void)
 {
-	int i;
-
 	LIBXML_TEST_VERSION
-
-	for (i = 1; i < argc; i++)
-		parse(argv[i]);
-	return 0;
 }