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/*
* $Id: wsffile.c 20676 2017-12-18 18:19:09Z yeti-dn $
* Copyright (C) 2011 David Necas (Yeti).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* [FILE-MAGIC-FREEDESKTOP]
* <mime-type type="application/x-wsf-spm">
* <comment>WSF SPM data</comment>
* <magic priority="80">
* <match type="string" offset="0:160" value="\nPixels in X:">
* <match type="string" offset="0:240" value="\nLines in Y:"/>
* </match>
* </magic>
* <glob pattern="*.wsf"/>
* <glob pattern="*.WSF"/>
* </mime-type>
**/
/**
* [FILE-MAGIC-FILEMAGIC]
* # WSF
* # Actually, I'm not sure what the acronym stands for. But we recognise it.
* 0 search/160 \x0aPixels\ in\ X:
* >&0 search/160 \x0aLines\ in\ Y: WSF AFM text data
**/
/**
* [FILE-MAGIC-USERGUIDE]
* WSF ASCII data
* .wsf
* Read
**/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <libgwyddion/gwymacros.h>
#include <libgwyddion/gwymath.h>
#include <libgwyddion/gwyutils.h>
#include <libprocess/stats.h>
#include <libgwymodule/gwymodule-file.h>
#include <app/gwymoduleutils-file.h>
#include <app/data-browser.h>
#include "err.h"
#define Mili (1e-3)
#define Micro (1e-6)
#define Nano (1e-9)
#define MAGIC1 "\nPixels in X:"
#define MAGIC1_SIZE (sizeof(MAGIC1)-1)
#define MAGIC2 "\nLines in Y:"
#define MAGIC2_SIZE (sizeof(MAGIC2)-1)
#define EXTENSION ".wsf"
static gboolean module_register(void);
static gint wsf_detect (const GwyFileDetectInfo *fileinfo,
gboolean only_name);
static GwyContainer* wsf_load (const gchar *filename,
GwyRunType mode,
GError **error);
static GwyContainer* wsf_get_meta (GHashTable *hash);
static GwyModuleInfo module_info = {
GWY_MODULE_ABI_VERSION,
&module_register,
N_("Imports WSF ASCII files."),
"Yeti <yeti@gwyddion.net>",
"0.4",
"David Nečas (Yeti)",
"2011",
};
GWY_MODULE_QUERY2(module_info, wsffile)
static gboolean
module_register(void)
{
gwy_file_func_register("wsffile",
N_("WSF ASCII files (.wsf)"),
(GwyFileDetectFunc)&wsf_detect,
(GwyFileLoadFunc)&wsf_load,
NULL,
NULL);
return TRUE;
}
static gint
wsf_detect(const GwyFileDetectInfo *fileinfo,
gboolean only_name)
{
if (only_name)
return g_str_has_suffix(fileinfo->name_lowercase, EXTENSION) ? 10 : 0;
if (strstr(fileinfo->head, MAGIC1) && strstr(fileinfo->head, MAGIC2))
return 100;
return 0;
}
static GwyContainer*
wsf_load(const gchar *filename,
G_GNUC_UNUSED GwyRunType mode,
GError **error)
{
GwyContainer *container = NULL, *meta;
GwyDataField *dfield = NULL;
gchar *line, *p, *header_end, *value, *title,
*header = NULL, *buffer = NULL;
GwyTextHeaderParser parser;
GHashTable *hash = NULL;
gsize size;
GError *err = NULL;
gdouble xreal, yreal, q;
gint i, xres, yres;
const gchar *zunit;
gdouble *data;
if (!g_file_get_contents(filename, &buffer, &size, &err)) {
err_GET_FILE_CONTENTS(error, &err);
goto fail;
}
p = buffer;
// The first line apparently contains the file name. Ignore it.
if (!(line = gwy_str_next_line(&p))) {
err_TOO_SHORT(error);
goto fail;
}
// Then there are some empty lines.
while (g_ascii_isspace(*p))
p++;
// Then there's the header, followed by empty lines again.
if (!(header_end = strstr(p, "\r\n\r\n"))) {
g_set_error(error, GWY_MODULE_FILE_ERROR, GWY_MODULE_FILE_ERROR_DATA,
_("File header does not end with an empty line."));
goto fail;
}
header = g_strndup(p, header_end - p);
gwy_clear(&parser, 1);
parser.key_value_separator = ":";
hash = gwy_text_header_parse(header, &parser, NULL, NULL);
if (!require_keys(hash, error,
"Pixels in X", "Lines in Y", "X Range", "Y Range",
"Display Type",
NULL))
goto fail;
xres = atoi(g_hash_table_lookup(hash, "Pixels in X"));
yres = atoi(g_hash_table_lookup(hash, "Lines in Y"));
if (err_DIMENSION(error, xres) || err_DIMENSION(error, yres))
goto fail;
xreal = g_ascii_strtod(g_hash_table_lookup(hash, "X Range"), NULL);
yreal = g_ascii_strtod(g_hash_table_lookup(hash, "Y Range"), NULL);
/* Use negated positive conditions to catch NaNs */
if (!((xreal = fabs(xreal)) > 0)) {
g_warning("Real x size is 0.0, fixing to 1.0");
xreal = 1.0;
}
if (!((yreal = fabs(yreal)) > 0)) {
g_warning("Real y size is 0.0, fixing to 1.0");
yreal = 1.0;
}
xreal *= Micro;
yreal *= Micro;
dfield = gwy_data_field_new(xres, yres, xreal, yreal, FALSE);
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_xy(dfield), "m");
value = title = g_hash_table_lookup(hash, "Display Type");
if (gwy_stramong(value, "Z_DRIVE", NULL)) {
zunit = "m";
q = Nano;
}
else if (gwy_stramong(value, "Z_SENSE", "Z_ERR", "L-R", "T-B", "T+B",
"Z_PHASE", "Z_AMPL", "Z_DRIVE", "Aux ADC 1",
"Aux ADC 2", NULL)) {
zunit = "V";
q = Mili;
}
else {
g_warning("Unknown type %s, cannot determine units.", value);
zunit = NULL;
q = 1.0;
}
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_z(dfield), zunit);
data = gwy_data_field_get_data(dfield);
value = p = header_end;
for (i = 0; i < xres*yres; i++) {
data[i] = q*g_ascii_strtod(value, &p);
if (p == value && (!*p || g_ascii_isspace(*p))) {
g_set_error(error, GWY_MODULE_FILE_ERROR,
GWY_MODULE_FILE_ERROR_DATA,
_("End of file reached when reading sample #%d of %d"),
i, xres*yres);
goto fail;
}
if (p == value) {
g_set_error(error, GWY_MODULE_FILE_ERROR,
GWY_MODULE_FILE_ERROR_DATA,
_("Malformed data encountered when reading sample "
"#%d of %d"),
i, xres*yres);
goto fail;
}
value = p;
}
container = gwy_container_new();
gwy_container_set_object(container, gwy_app_get_data_key_for_id(0), dfield);
gwy_container_set_string_by_name(container, "/0/data/title",
g_strdup(title));
if ((meta = wsf_get_meta(hash))) {
gwy_container_set_object_by_name(container, "/0/meta", meta);
g_object_unref(meta);
}
gwy_file_channel_import_log_add(container, 0, NULL, filename);
fail:
GWY_OBJECT_UNREF(dfield);
g_free(header);
g_free(buffer);
g_hash_table_destroy(hash);
return container;
}
static void
add_meta(gpointer hkey, gpointer hvalue, gpointer user_data)
{
gchar *key = NULL, *value = NULL;
if (!strlen((const gchar*)hvalue))
return;
if ((key = g_convert((const gchar*)hkey, -1,
"UTF-8", "ISO-8859-1",
NULL, NULL, NULL))
&& (value = g_convert((const gchar*)hvalue, -1,
"UTF-8", "ISO-8859-1",
NULL, NULL, NULL))) {
/* Move units to the value */
gchar *s;
if ((s = strchr(key, '('))) {
gchar *p = g_strdup(s+1);
guint len;
*s = '\0';
g_strchomp(key);
len = strlen(p);
if (len && p[len-1] == ')') {
p[len-1] = '\0';
len--;
}
if (len) {
gchar *q = g_strconcat(value, " ", p, NULL);
g_free(value);
value = q;
}
}
gwy_container_set_string_by_name(GWY_CONTAINER(user_data),
key, value);
}
g_free(key);
/* value is either NULL or eaten by the container */
}
static GwyContainer*
wsf_get_meta(GHashTable *hash)
{
GwyContainer *meta = gwy_container_new();
g_hash_table_foreach(hash, add_meta, meta);
if (gwy_container_get_n_items(meta))
return meta;
g_object_unref(meta);
return NULL;
}
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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