subsurface/core/save-xml.c
Berthold Stoeger c22fd9f4fd Dive sites: prepare for dive site ref-counting
Add a dive site table to each dive site to keep track of dives
that have been added to a dive site. Add two functions to add
dives to / remove dives from dive sites.

Since dive sites now contain a dive table, the order of includes
had to be changed: "divesite.h" now includes "dive.h" and not
vice-versa. This caused some include churn.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00

802 lines
22 KiB
C

// SPDX-License-Identifier: GPL-2.0
#ifdef __clang__
// Clang has a bug on zero-initialization of C structs.
#pragma clang diagnostic ignored "-Wmissing-field-initializers"
#endif
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include "divesite.h"
#include "subsurface-string.h"
#include "divelist.h"
#include "device.h"
#include "membuffer.h"
#include "strndup.h"
#include "git-access.h"
#include "qthelper.h"
/*
* 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 '?'.
*
* If we do this for attributes, we need to quote the quotes we use too.
*/
static void quote(struct membuffer *b, const char *text, int is_attribute)
{
int is_html = 0;
put_quoted(b, text, is_attribute, is_html);
}
static void show_utf8(struct membuffer *b, const char *text, const char *pre, const char *post, int is_attribute)
{
int len;
char *cleaned;
if (!text)
return;
/* remove leading and trailing space */
/* We need to combine isascii() with isspace(),
* because we can only trust isspace() with 7-bit ascii,
* on windows for example */
while (isascii(*text) && isspace(*text))
text++;
len = strlen(text);
if (!len)
return;
while (len && isascii(text[len - 1]) && isspace(text[len - 1]))
len--;
cleaned = strndup(text, len);
put_string(b, pre);
quote(b, cleaned, is_attribute);
put_string(b, post);
free(cleaned);
}
static void blankout(char *c)
{
while(*c) {
switch (*c) {
case 'A'...'Z':
*c = 'X';
break;
case 'a'...'z':
*c = 'x';
break;
default:
;
}
++c;
}
}
static void show_utf8_blanked(struct membuffer *b, const char *text, const char *pre, const char *post, int is_attribute, bool anonymize)
{
if (!text)
return;
char *copy = strdup(text);
if (anonymize)
blankout(copy);
show_utf8(b, copy, pre, post, is_attribute);
free(copy);
}
static void save_depths(struct membuffer *b, struct divecomputer *dc)
{
/* What's the point of this dive entry again? */
if (!dc->maxdepth.mm && !dc->meandepth.mm)
return;
put_string(b, " <depth");
put_depth(b, dc->maxdepth, " max='", " m'");
put_depth(b, dc->meandepth, " mean='", " m'");
put_string(b, " />\n");
}
static void save_dive_temperature(struct membuffer *b, struct dive *dive)
{
if (!dive->airtemp.mkelvin && !dive->watertemp.mkelvin)
return;
if (dive->airtemp.mkelvin == dc_airtemp(&dive->dc) && dive->watertemp.mkelvin == dc_watertemp(&dive->dc))
return;
put_string(b, " <divetemperature");
if (dive->airtemp.mkelvin != dc_airtemp(&dive->dc))
put_temperature(b, dive->airtemp, " air='", " C'");
if (dive->watertemp.mkelvin != dc_watertemp(&dive->dc))
put_temperature(b, dive->watertemp, " water='", " C'");
put_string(b, "/>\n");
}
static void save_temperatures(struct membuffer *b, struct divecomputer *dc)
{
if (!dc->airtemp.mkelvin && !dc->watertemp.mkelvin)
return;
put_string(b, " <temperature");
put_temperature(b, dc->airtemp, " air='", " C'");
put_temperature(b, dc->watertemp, " water='", " C'");
put_string(b, " />\n");
}
static void save_airpressure(struct membuffer *b, struct divecomputer *dc)
{
if (!dc->surface_pressure.mbar)
return;
put_string(b, " <surface");
put_pressure(b, dc->surface_pressure, " pressure='", " bar'");
put_string(b, " />\n");
}
static void save_salinity(struct membuffer *b, struct divecomputer *dc)
{
/* only save if we have a value that isn't the default of sea water */
if (!dc->salinity || dc->salinity == SEAWATER_SALINITY)
return;
put_string(b, " <water");
put_salinity(b, dc->salinity, " salinity='", " g/l'");
put_string(b, " />\n");
}
static void save_overview(struct membuffer *b, struct dive *dive, bool anonymize)
{
show_utf8_blanked(b, dive->divemaster, " <divemaster>", "</divemaster>\n", 0, anonymize);
show_utf8_blanked(b, dive->buddy, " <buddy>", "</buddy>\n", 0, anonymize);
show_utf8_blanked(b, dive->notes, " <notes>", "</notes>\n", 0, anonymize);
show_utf8_blanked(b, dive->suit, " <suit>", "</suit>\n", 0, anonymize);
}
static void put_gasmix(struct membuffer *b, struct gasmix mix)
{
int o2 = mix.o2.permille;
int he = mix.he.permille;
if (o2) {
put_format(b, " o2='%u.%u%%'", FRACTION(o2, 10));
if (he)
put_format(b, " he='%u.%u%%'", FRACTION(he, 10));
}
}
static void save_cylinder_info(struct membuffer *b, struct dive *dive)
{
int i, nr;
nr = nr_cylinders(dive);
for (i = 0; i < nr; i++) {
cylinder_t *cylinder = dive->cylinder + i;
int volume = cylinder->type.size.mliter;
const char *description = cylinder->type.description;
put_format(b, " <cylinder");
if (volume)
put_milli(b, " size='", volume, " l'");
put_pressure(b, cylinder->type.workingpressure, " workpressure='", " bar'");
show_utf8(b, description, " description='", "'", 1);
put_gasmix(b, cylinder->gasmix);
put_pressure(b, cylinder->start, " start='", " bar'");
put_pressure(b, cylinder->end, " end='", " bar'");
if (cylinder->cylinder_use != OC_GAS)
show_utf8(b, cylinderuse_text[cylinder->cylinder_use], " use='", "'", 1);
if (cylinder->depth.mm != 0)
put_milli(b, " depth='", cylinder->depth.mm, " m'");
put_format(b, " />\n");
}
}
static void save_weightsystem_info(struct membuffer *b, struct dive *dive)
{
int i, nr;
nr = nr_weightsystems(dive);
for (i = 0; i < nr; i++) {
weightsystem_t *ws = dive->weightsystem + i;
int grams = ws->weight.grams;
const char *description = ws->description;
put_format(b, " <weightsystem");
put_milli(b, " weight='", grams, " kg'");
show_utf8(b, description, " description='", "'", 1);
put_format(b, " />\n");
}
}
static void show_integer(struct membuffer *b, int value, const char *pre, const char *post)
{
put_format(b, " %s%d%s", pre, value, post);
}
static void show_index(struct membuffer *b, int value, const char *pre, const char *post)
{
if (value)
show_integer(b, value, pre, post);
}
static void save_sample(struct membuffer *b, struct sample *sample, struct sample *old, int o2sensor)
{
int idx;
put_format(b, " <sample time='%u:%02u min'", FRACTION(sample->time.seconds, 60));
put_milli(b, " depth='", sample->depth.mm, " m'");
if (sample->temperature.mkelvin && sample->temperature.mkelvin != old->temperature.mkelvin) {
put_temperature(b, sample->temperature, " temp='", " C'");
old->temperature = sample->temperature;
}
/*
* We only show sensor information for samples with pressure, and only if it
* changed from the previous sensor we showed.
*/
for (idx = 0; idx < MAX_SENSORS; idx++) {
pressure_t p = sample->pressure[idx];
int sensor = sample->sensor[idx];
if (!p.mbar)
continue;
/* Legacy o2pressure format? */
if (o2sensor >= 0) {
if (sensor == o2sensor) {
put_pressure(b, p, " o2pressure='", " bar'");
continue;
}
put_pressure(b, p, " pressure='", " bar'");
if (sensor != old->sensor[0]) {
put_format(b, " sensor='%d'", sensor);
old->sensor[0] = sensor;
}
continue;
}
/* The new-style format is much simpler: the sensor is always encoded */
put_format(b, " pressure%d=", sensor);
put_pressure(b, p, "'", " bar'");
}
/* the deco/ndl values are stored whenever they change */
if (sample->ndl.seconds != old->ndl.seconds) {
put_format(b, " ndl='%u:%02u min'", FRACTION(sample->ndl.seconds, 60));
old->ndl = sample->ndl;
}
if (sample->tts.seconds != old->tts.seconds) {
put_format(b, " tts='%u:%02u min'", FRACTION(sample->tts.seconds, 60));
old->tts = sample->tts;
}
if (sample->rbt.seconds)
put_format(b, " rbt='%u:%02u min'", FRACTION(sample->rbt.seconds, 60));
if (sample->in_deco != old->in_deco) {
put_format(b, " in_deco='%d'", sample->in_deco ? 1 : 0);
old->in_deco = sample->in_deco;
}
if (sample->stoptime.seconds != old->stoptime.seconds) {
put_format(b, " stoptime='%u:%02u min'", FRACTION(sample->stoptime.seconds, 60));
old->stoptime = sample->stoptime;
}
if (sample->stopdepth.mm != old->stopdepth.mm) {
put_milli(b, " stopdepth='", sample->stopdepth.mm, " m'");
old->stopdepth = sample->stopdepth;
}
if (sample->cns != old->cns) {
put_format(b, " cns='%u%%'", sample->cns);
old->cns = sample->cns;
}
if ((sample->o2sensor[0].mbar) && (sample->o2sensor[0].mbar != old->o2sensor[0].mbar)) {
put_milli(b, " sensor1='", sample->o2sensor[0].mbar, " bar'");
old->o2sensor[0] = sample->o2sensor[0];
}
if ((sample->o2sensor[1].mbar) && (sample->o2sensor[1].mbar != old->o2sensor[1].mbar)) {
put_milli(b, " sensor2='", sample->o2sensor[1].mbar, " bar'");
old->o2sensor[1] = sample->o2sensor[1];
}
if ((sample->o2sensor[2].mbar) && (sample->o2sensor[2].mbar != old->o2sensor[2].mbar)) {
put_milli(b, " sensor3='", sample->o2sensor[2].mbar, " bar'");
old->o2sensor[2] = sample->o2sensor[2];
}
if (sample->setpoint.mbar != old->setpoint.mbar) {
put_milli(b, " po2='", sample->setpoint.mbar, " bar'");
old->setpoint = sample->setpoint;
}
if (sample->heartbeat != old->heartbeat) {
show_index(b, sample->heartbeat, "heartbeat='", "'");
old->heartbeat = sample->heartbeat;
}
if (sample->bearing.degrees != old->bearing.degrees) {
show_index(b, sample->bearing.degrees, "bearing='", "'");
old->bearing.degrees = sample->bearing.degrees;
}
put_format(b, " />\n");
}
static void save_one_event(struct membuffer *b, struct dive *dive, struct event *ev)
{
put_format(b, " <event time='%d:%02d min'", FRACTION(ev->time.seconds, 60));
show_index(b, ev->type, "type='", "'");
show_index(b, ev->flags, "flags='", "'");
if (!strcmp(ev->name,"modechange"))
show_utf8(b, divemode_text[ev->value], " divemode='", "'",1);
else
show_index(b, ev->value, "value='", "'");
show_utf8(b, ev->name, " name='", "'", 1);
if (event_is_gaschange(ev)) {
struct gasmix mix = get_gasmix_from_event(dive, ev);
if (ev->gas.index >= 0)
show_integer(b, ev->gas.index, "cylinder='", "'");
put_gasmix(b, mix);
}
put_format(b, " />\n");
}
static void save_events(struct membuffer *b, struct dive *dive, struct event *ev)
{
while (ev) {
save_one_event(b, dive, ev);
ev = ev->next;
}
}
static void save_tags(struct membuffer *b, struct tag_entry *entry)
{
if (entry) {
const char *sep = " tags='";
do {
struct divetag *tag = entry->tag;
put_string(b, sep);
/* If the tag has been translated, write the source to the xml file */
quote(b, tag->source ?: tag->name, 1);
sep = ", ";
} while ((entry = entry->next) != NULL);
put_string(b, "'");
}
}
static void save_extra_data(struct membuffer *b, struct extra_data *ed)
{
while (ed) {
if (ed->key && ed->value) {
put_string(b, " <extradata");
show_utf8(b, ed->key, " key='", "'", 1);
show_utf8(b, ed->value, " value='", "'", 1);
put_string(b, " />\n");
}
ed = ed->next;
}
}
static void show_date(struct membuffer *b, timestamp_t when)
{
struct tm tm;
utc_mkdate(when, &tm);
put_format(b, " date='%04u-%02u-%02u'",
tm.tm_year, tm.tm_mon + 1, tm.tm_mday);
if (tm.tm_hour || tm.tm_min || tm.tm_sec)
put_format(b, " time='%02u:%02u:%02u'",
tm.tm_hour, tm.tm_min, tm.tm_sec);
}
static void save_samples(struct membuffer *b, struct dive *dive, struct divecomputer *dc)
{
int nr;
int o2sensor;
struct sample *s;
struct sample dummy = { .bearing.degrees = -1, .ndl.seconds = -1 };
/* Set up default pressure sensor indexes */
o2sensor = legacy_format_o2pressures(dive, dc);
if (o2sensor >= 0) {
dummy.sensor[0] = !o2sensor;
dummy.sensor[1] = o2sensor;
}
s = dc->sample;
nr = dc->samples;
while (--nr >= 0) {
save_sample(b, s, &dummy, o2sensor);
s++;
}
}
static void save_dc(struct membuffer *b, struct dive *dive, struct divecomputer *dc)
{
put_format(b, " <divecomputer");
show_utf8(b, dc->model, " model='", "'", 1);
if (dc->last_manual_time.seconds)
put_duration(b, dc->last_manual_time, " last-manual-time='", " min'");
if (dc->deviceid)
put_format(b, " deviceid='%08x'", dc->deviceid);
if (dc->diveid)
put_format(b, " diveid='%08x'", dc->diveid);
if (dc->when && dc->when != dive->when)
show_date(b, dc->when);
if (dc->duration.seconds && dc->duration.seconds != dive->dc.duration.seconds)
put_duration(b, dc->duration, " duration='", " min'");
if (dc->divemode != OC) {
for (enum divemode_t i = 0; i < NUM_DIVEMODE; i++)
if (dc->divemode == i)
show_utf8(b, divemode_text[i], " dctype='", "'", 1);
if (dc->no_o2sensors)
put_format(b," no_o2sensors='%d'", dc->no_o2sensors);
}
put_format(b, ">\n");
save_depths(b, dc);
save_temperatures(b, dc);
save_airpressure(b, dc);
save_salinity(b, dc);
put_duration(b, dc->surfacetime, " <surfacetime>", " min</surfacetime>\n");
save_extra_data(b, dc->extra_data);
save_events(b, dive, dc->events);
save_samples(b, dive, dc);
put_format(b, " </divecomputer>\n");
}
static void save_picture(struct membuffer *b, struct picture *pic)
{
put_string(b, " <picture filename='");
put_quoted(b, pic->filename, true, false);
put_string(b, "'");
if (pic->offset.seconds) {
int offset = pic->offset.seconds;
char sign = '+';
if (offset < 0) {
sign = '-';
offset = -offset;
}
put_format(b, " offset='%c%u:%02u min'", sign, FRACTION(offset, 60));
}
put_location(b, &pic->location, " gps='","'");
put_string(b, "/>\n");
}
void save_one_dive_to_mb(struct membuffer *b, struct dive *dive, bool anonymize)
{
struct divecomputer *dc;
put_string(b, "<dive");
if (dive->number)
put_format(b, " number='%d'", dive->number);
if (dive->notrip)
put_format(b, " tripflag='NOTRIP'");
if (dive->rating)
put_format(b, " rating='%d'", dive->rating);
if (dive->visibility)
put_format(b, " visibility='%d'", dive->visibility);
save_tags(b, dive->tag_list);
if (dive->dive_site) {
put_format(b, " divesiteid='%8x'", dive->dive_site->uuid);
}
show_date(b, dive->when);
if (dive->dc.duration.seconds > 0)
put_format(b, " duration='%u:%02u min'>\n",
FRACTION(dive->dc.duration.seconds, 60));
else
put_format(b, ">\n");
save_overview(b, dive, anonymize);
save_cylinder_info(b, dive);
save_weightsystem_info(b, dive);
save_dive_temperature(b, dive);
/* Save the dive computer data */
for_each_dc(dive, dc)
save_dc(b, dive, dc);
FOR_EACH_PICTURE(dive)
save_picture(b, picture);
put_format(b, "</dive>\n");
}
int save_dive(FILE *f, struct dive *dive, bool anonymize)
{
struct membuffer buf = { 0 };
save_one_dive_to_mb(&buf, dive, anonymize);
flush_buffer(&buf, f);
/* Error handling? */
return 0;
}
static void save_trip(struct membuffer *b, dive_trip_t *trip, bool anonymize)
{
int i;
struct dive *dive;
put_format(b, "<trip");
show_date(b, trip_date(trip));
show_utf8(b, trip->location, " location=\'", "\'", 1);
put_format(b, ">\n");
show_utf8(b, trip->notes, "<notes>", "</notes>\n", 0);
/*
* Incredibly cheesy: we want to save the dives sorted, and they
* are sorted in the dive array.. So instead of using the dive
* list in the trip, we just traverse the global dive array and
* check the divetrip pointer..
*/
for_each_dive(i, dive) {
if (dive->divetrip == trip)
save_one_dive_to_mb(b, dive, anonymize);
}
put_format(b, "</trip>\n");
}
static void save_one_device(void *_f, const char *model, uint32_t deviceid,
const char *nickname, const char *serial_nr, const char *firmware)
{
struct membuffer *b = _f;
/* Nicknames that are empty or the same as the device model are not interesting */
if (nickname) {
if (!*nickname || !strcmp(model, nickname))
nickname = NULL;
}
/* Serial numbers that are empty are not interesting */
if (serial_nr && !*serial_nr)
serial_nr = NULL;
/* Firmware strings that are empty are not interesting */
if (firmware && !*firmware)
firmware = NULL;
/* Do we have anything interesting about this dive computer to save? */
if (!serial_nr && !nickname && !firmware)
return;
put_format(b, "<divecomputerid");
show_utf8(b, model, " model='", "'", 1);
put_format(b, " deviceid='%08x'", deviceid);
show_utf8(b, serial_nr, " serial='", "'", 1);
show_utf8(b, firmware, " firmware='", "'", 1);
show_utf8(b, nickname, " nickname='", "'", 1);
put_format(b, "/>\n");
}
int save_dives(const char *filename)
{
return save_dives_logic(filename, false, false);
}
void save_dives_buffer(struct membuffer *b, const bool select_only, bool anonymize)
{
int i;
struct dive *dive;
dive_trip_t *trip;
put_format(b, "<divelog program='subsurface' version='%d'>\n<settings>\n", DATAFORMAT_VERSION);
/* save the dive computer nicknames, if any */
call_for_each_dc(b, save_one_device, select_only);
if (autogroup)
put_format(b, " <autogroup state='1' />\n");
put_format(b, "</settings>\n");
/* save the dive sites - to make the output consistent let's sort the table, first */
dive_site_table_sort(&dive_site_table);
purge_empty_dive_sites(&dive_site_table);
put_format(b, "<divesites>\n");
for (i = 0; i < dive_site_table.nr; i++) {
struct dive_site *ds = get_dive_site(i, &dive_site_table);
/* Only write used dive sites */
if (!is_dive_site_used(ds, false))
continue;
if (select_only && !is_dive_site_used(ds, true))
continue;
put_format(b, "<site uuid='%8x'", ds->uuid);
show_utf8_blanked(b, ds->name, " name='", "'", 1, anonymize);
put_location(b, &ds->location, " gps='", "'");
show_utf8_blanked(b, ds->description, " description='", "'", 1, anonymize);
put_format(b, ">\n");
show_utf8_blanked(b, ds->notes, " <notes>", " </notes>\n", 0, anonymize);
if (ds->taxonomy.nr) {
for (int j = 0; j < ds->taxonomy.nr; j++) {
struct taxonomy *t = &ds->taxonomy.category[j];
if (t->category != TC_NONE && t->value) {
put_format(b, " <geo cat='%d'", t->category);
put_format(b, " origin='%d'", t->origin);
show_utf8_blanked(b, t->value, " value='", "'/>\n", 1, anonymize);
}
}
}
put_format(b, "</site>\n");
}
put_format(b, "</divesites>\n<dives>\n");
for (i = 0; i < trip_table.nr; ++i)
trip_table.trips[i]->saved = 0;
/* save the dives */
for_each_dive(i, dive) {
if (select_only) {
if (!dive->selected)
continue;
save_one_dive_to_mb(b, dive, anonymize);
} else {
trip = dive->divetrip;
/* Bare dive without a trip? */
if (!trip) {
save_one_dive_to_mb(b, dive, anonymize);
continue;
}
/* Have we already seen this trip (and thus saved this dive?) */
if (trip->saved)
continue;
/* We haven't seen this trip before - save it and all dives */
trip->saved = 1;
save_trip(b, trip, anonymize);
}
}
put_format(b, "</dives>\n</divelog>\n");
}
static void save_backup(const char *name, const char *ext, const char *new_ext)
{
int len = strlen(name);
int a = strlen(ext), b = strlen(new_ext);
char *newname;
/* len up to and including the final '.' */
len -= a;
if (len <= 1)
return;
if (name[len - 1] != '.')
return;
/* msvc doesn't have strncasecmp, has _strnicmp instead - crazy */
if (strncasecmp(name + len, ext, a))
return;
newname = malloc(len + b + 1);
if (!newname)
return;
memcpy(newname, name, len);
memcpy(newname + len, new_ext, b + 1);
/*
* Ignore errors. Maybe we can't create the backup file,
* maybe no old file existed. Regardless, we'll write the
* new file.
*/
(void) subsurface_rename(name, newname);
free(newname);
}
static void try_to_backup(const char *filename)
{
char extension[][5] = { "xml", "ssrf", "" };
int i = 0;
int flen = strlen(filename);
/* Maybe we might want to make this configurable? */
while (extension[i][0] != '\0') {
int elen = strlen(extension[i]);
if (strcasecmp(filename + flen - elen, extension[i]) == 0) {
if (last_xml_version < DATAFORMAT_VERSION) {
int se_len = strlen(extension[i]) + 5;
char *special_ext = malloc(se_len);
snprintf(special_ext, se_len, "%s.v%d", extension[i], last_xml_version);
save_backup(filename, extension[i], special_ext);
free(special_ext);
} else {
save_backup(filename, extension[i], "bak");
}
break;
}
i++;
}
}
int save_dives_logic(const char *filename, const bool select_only, bool anonymize)
{
struct membuffer buf = { 0 };
FILE *f;
void *git;
const char *branch, *remote;
int error = 0;
git = is_git_repository(filename, &branch, &remote, false);
if (git)
return git_save_dives(git, branch, remote, select_only);
save_dives_buffer(&buf, select_only, anonymize);
if (same_string(filename, "-")) {
f = stdout;
} else {
try_to_backup(filename);
error = -1;
f = subsurface_fopen(filename, "w");
}
if (f) {
flush_buffer(&buf, f);
error = fclose(f);
}
if (error)
report_error("Save failed (%s)", strerror(errno));
free_buffer(&buf);
return error;
}
int export_dives_xslt(const char *filename, const bool selected, const int units, const char *export_xslt, bool anonymize)
{
FILE *f;
struct membuffer buf = { 0 };
xmlDoc *doc;
xsltStylesheetPtr xslt = NULL;
xmlDoc *transformed;
int res = 0;
char *params[3];
int pnr = 0;
char unitstr[3];
if (verbose)
fprintf(stderr, "export_dives_xslt with stylesheet %s\n", export_xslt);
if (!filename)
return report_error("No filename for export");
/* Save XML to file and convert it into a memory buffer */
save_dives_buffer(&buf, selected, anonymize);
/*
* Parse the memory buffer into XML document and
* transform it to selected export format, finally dumping
* the XML into a character buffer.
*/
doc = xmlReadMemory(buf.buffer, buf.len, "divelog", NULL, 0);
free_buffer(&buf);
if (!doc)
return report_error("Failed to read XML memory");
/* Convert to export format */
xslt = get_stylesheet(export_xslt);
if (!xslt)
return report_error("Failed to open export conversion stylesheet");
snprintf(unitstr, 3, "%d", units);
params[pnr++] = "units";
params[pnr++] = unitstr;
params[pnr++] = NULL;
transformed = xsltApplyStylesheet(xslt, doc, (const char **)params);
xmlFreeDoc(doc);
/* Write the transformed export to file */
f = subsurface_fopen(filename, "w");
if (f) {
xsltSaveResultToFile(f, transformed, xslt);
fclose(f);
/* Check write errors? */
} else {
res = report_error("Failed to open %s for writing (%s)", filename, strerror(errno));
}
xsltFreeStylesheet(xslt);
xmlFreeDoc(transformed);
return res;
}