1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
* $Id: pltfile.c 20676 2017-12-18 18:19:09Z yeti-dn $
* Copyright (C) 2009 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-nanosurf-plt-spm">
* <comment>Nanosurf PLT data</comment>
* <magic priority="80">
* <match type="string" offset="0" value="#Channel: ">
* <match type="string" offset="12:32" value="#Frame :"/>
* </match>
* </magic>
* <glob pattern="*.plt"/>
* <glob pattern="*.PLT"/>
* </mime-type>
**/
/**
* [FILE-MAGIC-FILEMAGIC]
* # Nanosurf PLT
* # Must look for some header strings, the entire file is text
* 0 string \x23Channel:\x20
* >&0 search/40 \x23Frame\x20\x20:\x20 Nanosurf PLT SPM text data
**/
/**
* [FILE-MAGIC-USERGUIDE]
* Nanosurf PLT
* .plt
* 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 MAGIC1 "#Channel:"
#define MAGIC2 "#Frame :"
#define MAGIC3 "#Lines :"
#define MAGIC4 "#Points :"
#define EXTENSION ".plt"
static gboolean module_register(void);
static gint plt_detect (const GwyFileDetectInfo *fileinfo,
gboolean only_name);
static GwyContainer* plt_load (const gchar *filename,
GwyRunType mode,
GError **error);
static GwyModuleInfo module_info = {
GWY_MODULE_ABI_VERSION,
&module_register,
N_("Imports Nanosurf PLT files."),
"Yeti <yeti@gwyddion.net>",
"0.2",
"David Nečas (Yeti)",
"2009",
};
GWY_MODULE_QUERY2(module_info, pltfile)
static gboolean
module_register(void)
{
gwy_file_func_register("pltfile",
N_("Nanosurf PLT files (.plt)"),
(GwyFileDetectFunc)&plt_detect,
(GwyFileLoadFunc)&plt_load,
NULL,
NULL);
return TRUE;
}
static gint
plt_detect(const GwyFileDetectInfo *fileinfo,
gboolean only_name)
{
if (only_name)
return g_str_has_suffix(fileinfo->name_lowercase, EXTENSION) ? 10 : 0;
if (strncmp(fileinfo->head, MAGIC1, sizeof(MAGIC1)-1) == 0
&& strstr(fileinfo->head, MAGIC2)
&& strstr(fileinfo->head, MAGIC3)
&& strstr(fileinfo->head, MAGIC4))
return 90;
return 0;
}
static GwyContainer*
plt_load(const gchar *filename,
G_GNUC_UNUSED GwyRunType mode,
GError **error)
{
GwyContainer *container = NULL;
GwyDataField *dfield = NULL;
GwyTextHeaderParser parser;
GwySIUnit *xunit, *yunit, *zunit;
gchar *p, *value, *buffer = NULL;
GHashTable *hash = NULL;
gsize size;
GError *err = NULL;
G_GNUC_UNUSED gdouble xreal, yreal, zreal;
gint i, xres, yres;
gdouble *data;
if (!g_file_get_contents(filename, &buffer, &size, &err)) {
err_GET_FILE_CONTENTS(error, &err);
goto fail;
}
if (strncmp(buffer, MAGIC1, MIN(size, sizeof(MAGIC1)-1))) {
err_FILE_TYPE(error, "Nanosurf PLT");
goto fail;
}
/* Find the first line not starting with '#' */
for (p = buffer; (p - buffer) + 1 < size; p++) {
if ((p[0] == '\n' || p[0] == '\r')
&& (p[1] != '\n' && p[1] != '#')) {
break;
}
}
*p = '\0';
p++;
gwy_clear(&parser, 1);
parser.line_prefix = "#";
parser.key_value_separator = ":";
hash = gwy_text_header_parse(buffer, &parser, NULL, NULL);
if (!require_keys(hash, error,
"Channel", "Lines", "Points",
"XRange", "YRange", "ZRange",
NULL))
goto fail;
xres = atoi(g_hash_table_lookup(hash, "Points"));
yres = atoi(g_hash_table_lookup(hash, "Lines"));
if (err_DIMENSION(error, xres) || err_DIMENSION(error, yres))
goto fail;
value = g_hash_table_lookup(hash, "XRange");
xreal = g_ascii_strtod(value, &value);
xunit = gwy_si_unit_new(value);
value = g_hash_table_lookup(hash, "YRange");
yreal = g_ascii_strtod(value, &value);
yunit = gwy_si_unit_new(value);
value = g_hash_table_lookup(hash, "ZRange");
zreal = g_ascii_strtod(value, &value);
zunit = gwy_si_unit_new(value);
/* 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;
}
if (!gwy_si_unit_equal(xunit, yunit))
g_warning("X and Y units differ, using X");
dfield = gwy_data_field_new(xres, yres, xreal, yreal, FALSE);
gwy_data_field_set_si_unit_xy(dfield, xunit);
gwy_data_field_set_si_unit_z(dfield, zunit);
g_object_unref(xunit);
g_object_unref(yunit);
g_object_unref(zunit);
data = gwy_data_field_get_data(dfield);
value = p;
for (i = 0; i < xres*yres; i++) {
data[i] = g_ascii_strtod(value, &p);
value = p;
}
container = gwy_container_new();
gwy_container_set_object(container, gwy_app_get_data_key_for_id(0), dfield);
g_object_unref(dfield);
if ((value = g_hash_table_lookup(hash, "Channel")))
gwy_container_set_string_by_name(container, "/0/data/title",
g_strdup(value));
else
gwy_app_channel_title_fall_back(container, 0);
gwy_file_channel_import_log_add(container, 0, NULL, filename);
fail:
g_free(buffer);
g_hash_table_destroy(hash);
return container;
}
/* 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 : */
|
