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#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include "dive.h"
#define FRACTION(n,x) ((unsigned)(n)/(x)),((unsigned)(n)%(x))
static void show_milli(FILE *f, const char *pre, int value, const char *unit, const char *post)
{
int i;
char buf[4];
unsigned v;
fputs(pre, f);
v = value;
if (value < 0) {
putc('-', f);
v = -value;
}
for (i = 2; i >= 0; i--) {
buf[i] = (v % 10) + '0';
v /= 10;
}
buf[3] = 0;
if (buf[2] == '0') {
buf[2] = 0;
if (buf[1] == '0')
buf[1] = 0;
}
fprintf(f, "%u.%s%s%s", v, buf, unit, post);
}
static void show_temperature(FILE *f, temperature_t temp, const char *pre, const char *post)
{
if (temp.mkelvin)
show_milli(f, pre, temp.mkelvin - 273150, " C", post);
}
static void show_depth(FILE *f, depth_t depth, const char *pre, const char *post)
{
if (depth.mm)
show_milli(f, pre, depth.mm, " m", post);
}
static void show_duration(FILE *f, duration_t duration, const char *pre, const char *post)
{
if (duration.seconds)
fprintf(f, "%s%u:%02u min%s", pre, FRACTION(duration.seconds, 60), post);
}
static void show_pressure(FILE *f, pressure_t pressure, const char *pre, const char *post)
{
if (pressure.mbar)
show_milli(f, pre, pressure.mbar, " bar", post);
}
/*
* We're outputting utf8 in xml.
* We need to quote the characters <, >, &.
*
* Technically I don't think we'd necessarily need to quote the control
* characters, but at least libxml2 doesn't like them. It doesn't even
* allow them quoted. So we just skip them and replace them with '?'.
*
* Nothing else (and if we ever do this using attributes, we'd need to
* quote the quotes we use too).
*/
static void quote(FILE *f, const char *text)
{
const char *p = text;
for (;;) {
const char *escape;
switch (*p++) {
default:
continue;
case 0:
escape = NULL;
break;
case 1 ... 8:
case 11: case 12:
case 14 ... 31:
escape = "?";
break;
case '<':
escape = "&lt;";
break;
case '>':
escape = "&gt;";
break;
case '&':
escape = "&amp;";
break;
}
fwrite(text, (p - text - 1), 1, f);
if (!escape)
break;
fputs(escape, f);
text = p;
}
}
static void show_utf8(FILE *f, const char *text, const char *pre, const char *post)
{
int len;
if (!text)
return;
while (isspace(*text))
text++;
len = strlen(text);
if (!len)
return;
while (len && isspace(text[len-1]))
len--;
/* FIXME! Quoting! */
fputs(pre, f);
quote(f, text);
fputs(post, f);
}
static void save_depths(FILE *f, struct dive *dive)
{
/* What's the point of this dive entry again? */
if (!dive->maxdepth.mm && !dive->meandepth.mm)
return;
fputs(" <depth", f);
show_depth(f, dive->maxdepth, " max='", "'");
show_depth(f, dive->meandepth, " mean='", "'");
fputs(" />\n", f);
}
static void save_temperatures(FILE *f, struct dive *dive)
{
if (!dive->airtemp.mkelvin && !dive->watertemp.mkelvin)
return;
fputs(" <temperature", f);
show_temperature(f, dive->airtemp, " air='", "'");
show_temperature(f, dive->watertemp, " water='", "'");
fputs(" />\n", f);
}
static void save_overview(FILE *f, struct dive *dive)
{
save_depths(f, dive);
save_temperatures(f, dive);
show_duration(f, dive->surfacetime, " <surfacetime>", "</surfacetime>\n");
show_utf8(f, dive->location, " <location>","</location>\n");
show_utf8(f, dive->notes, " <notes>","</notes>\n");
}
static void save_cylinder_info(FILE *f, struct dive *dive)
{
int i;
for (i = 0; i < MAX_CYLINDERS; i++) {
cylinder_t *cylinder = dive->cylinder+i;
int volume = cylinder->type.size.mliter;
const char *description = cylinder->type.description;
int o2 = cylinder->gasmix.o2.permille;
int he = cylinder->gasmix.he.permille;
int start = cylinder->start.mbar;
int end = cylinder->end.mbar;
/* No cylinder information at all? */
if (!o2 && !volume && !start && !end)
return;
fprintf(f, " <cylinder");
if (o2) {
fprintf(f, " o2='%u.%u%%'", FRACTION(o2, 10));
if (he)
fprintf(f, " he='%u.%u%%'", FRACTION(he, 10));
}
if (volume)
show_milli(f, " size='", volume, " l", "'");
if (description)
fprintf(f, " description='%s'", description);
show_pressure(f, cylinder->start, " start='", "'");
show_pressure(f, cylinder->end, " end='", "'");
fprintf(f, " />\n");
}
}
static void save_sample(FILE *f, struct sample *sample)
{
fprintf(f, " <sample time='%u:%02u min'", FRACTION(sample->time.seconds,60));
show_milli(f, " depth='", sample->depth.mm, " m", "'");
show_temperature(f, sample->temperature, " temp='", "'");
show_pressure(f, sample->cylinderpressure, " pressure='", "'");
if (sample->cylinderindex)
fprintf(f, " cylinderindex='%d'", sample->cylinderindex);
fprintf(f, " />\n");
}
static void save_dive(FILE *f, struct dive *dive)
{
int i;
struct tm *tm = gmtime(&dive->when);
fprintf(f, "<dive date='%04u-%02u-%02u' time='%02u:%02u:%02u' duration='%u:%02u min'>\n",
tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec,
FRACTION(dive->duration.seconds, 60));
save_overview(f, dive);
save_cylinder_info(f, dive);
for (i = 0; i < dive->samples; i++)
save_sample(f, dive->sample+i);
fprintf(f, "</dive>\n");
}
#define VERSION 1
void save_dives(const char *filename)
{
int i;
FILE *f = fopen(filename, "w");
if (!f)
return;
/* Flush any edits of current dives back to the dives! */
flush_dive_info_changes();
fprintf(f, "<dives>\n<program name='diveclog' version='%d'></program>\n", VERSION);
for (i = 0; i < dive_table.nr; i++)
save_dive(f, get_dive(i));
fprintf(f, "</dives>\n");
fclose(f);
}
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