i_read.cpp
3.85 KB
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
#include "blc_core.h"
#include "blc_channel.h"
#include "blc_program.h"
#include <unistd.h>
#include <termios.h>
#include <libgen.h> //basename
int file_get_lines_number(FILE* file){
int ch, lines_nb;
lines_nb=0;
while(feof(file)==0){
ch = fgetc(file);
if (ch == '\n') lines_nb++;
else if ( ch == EOF ) if (feof(file)==0) EXIT_ON_SYSTEM_ERROR("Reading file");
}
return lines_nb;
}
void array_def_with_tsv_file_first_line(blc_array *array, char const *filename){
char const *ext;
FILE *file;
size_t linecap=0;
char *line;
int length;
char const *pos;
ext=blc_get_filename_extension(filename);
if (strcmp(ext, "tsv")!=0) EXIT_ON_ERROR("'%s' does not .tsv extension but '%s'", filename, ext);
SYSTEM_ERROR_CHECK(file=fopen(filename,"r"), NULL, "opening '%s'", filename);
SYSTEM_ERROR_CHECK(getline(&line, &linecap, file), -1, "Reading '%s'", filename);
pos=line;
length=0;
while(pos){
pos=strchr(pos+1, '\t');
if (pos) length++;
}
array->def_array('FL32', 'NDEF', 1, length);
fclose(file);
}
//We suppose they are float and only one dim
void array_def_with_tsv_file(blc_array *array, char const *filename){
char const *ext;
FILE *file;
size_t linecap=0;
char *line;
int length, lines_nb;
char const *pos;
ext=blc_get_filename_extension(filename);
if (strcmp(ext, "tsv")!=0) EXIT_ON_ERROR("'%s' does not .tsv extension but '%s'", filename, ext);
SYSTEM_ERROR_CHECK(file=fopen(filename,"r"), NULL, "opening '%s'", filename);
SYSTEM_ERROR_CHECK(getline(&line, &linecap, file), -1, "Reading '%s'", filename);
pos=line;
length=0;
while(pos){
pos=strchr(pos+1, '\t');
if (pos)length++;
}
lines_nb=file_get_lines_number(file)+1; //The first line was alreay read
array->def_array('FL32', 'NDEF', 2, length, lines_nb);
fclose(file);
}
int main(int argc, char** argv){
char const *period_str, *text;
char const *channel_name, *filename;
char *line=NULL;
size_t linecap=0;
ssize_t line_size;
blc_channel channel;
FILE *file;
int period;
blc_program_set_description("Read file of 2 dimensions");
blc_program_add_option(&period_str, 'p', "period", "integer", "Period in ms to read line by line", "0");
blc_program_add_option(&channel_name, 'o', "output_channel", "string", "Name of the channel to output the data", NULL);
blc_program_add_option(&text, 't', "text", NULL, "Export the result as text instead of blc_channel", NULL);
blc_program_add_parameter(&filename, "file name", 1, "file to load", NULL);
blc_program_init(&argc, &argv, NULL);
period=strtod(period_str, NULL);
if (text==NULL){
if (channel_name==NULL) if (channel_name==NULL) asprintf((char**)&channel_name, "/%s%d", basename(argv[0]), getpid()); //This will not be free but it is only allocate once
if (period == 0){
array_def_with_tsv_file(&channel, filename);
channel.create_or_open(channel_name, BLC_CHANNEL_WRITE);
channel.update_with_tsv_file(filename);
}
else{
array_def_with_tsv_file_first_line(&channel, filename);
channel.create_or_open(channel_name, BLC_CHANNEL_WRITE);
}
channel.publish();
}
else if (period==0) EXIT_ON_ERROR("You are in text mode and period is 0. Use the POSIX executable 'cat' for the same result");
if (period != 0) {
SYSTEM_ERROR_CHECK(file=fopen(filename, "r"), NULL, "Loading '%s'", filename);
BLC_COMMAND_LOOP(period*1000){
if (text){
line_size=getline(&line, &linecap, file);
if (line_size==-1) EXIT_ON_SYSTEM_ERROR("Reading '%s'", filename);
SYSTEM_SUCCESS_CHECK(write(STDOUT_FILENO, line, line_size), line_size, "Error writing on stdout");
}
else fscan_tsv_floats(file, channel.floats, channel.dims[0].length);
}
}
if (line) {
FREE(line);
linecap=0;
}
return EXIT_SUCCESS;
}