i_keyboard.cpp
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#include "blc_core.h"
#include "blc_channel.h"
#include "blc_program.h"
#include <unistd.h>
#include <termios.h>
#include <libgen.h> //basename
enum{NORMAL_KEY=0, QUIT_KEY, NEUTRAL_KEY, INDEX_KEY, ARROW_CHANGE_INDEX, WRONG_KEY, DECREMENT_KEY, INCREMENT_KEY, FAST_DECREMENT_KEY, FAST_INCREMENT_KEY};
enum { LEFT_ARROW='D', RIGHT_ARROW='C', UP_ARROW='A', DOWN_ARROW='B'};
static blc_channel channel;
static blc_mem table;
static char *key_list;
static char const *display;
static int keys_nb;
static uchar min, max;
static uchar quitting_key=0, neutral_key;
static float neutral_value, max_value, min_value, float_step_size=0.004;
static uchar uchar_step_size=1;
//quitting key return -1, neutral return -2;
static int update_index(int *index){
uchar answer[3];
ssize_t ret;
int index_tmp;
SYSTEM_ERROR_CHECK(ret=read(STDIN_FILENO, answer, 3), -1, "Waiting for keyboard input");
if (ret==1)
{
if (answer[0] >= min && answer[0] <= max && ((index_tmp=table.uchars[*answer-min]) != keys_nb)){
*index=index_tmp;
return INDEX_KEY;
}
else if (answer[0]==quitting_key) return QUIT_KEY;
else if (answer[0]==neutral_key) return NEUTRAL_KEY;
else fprintf(stderr, "\nThe key '%c' id '%d' is not possible. The possibilities are in '%s' or '%c' for quitting and '%c' for neutral value.\n", answer[0], answer[0], key_list, quitting_key, neutral_key);
} if (ret==2){
switch (answer[1]){
default:fprintf(stderr, "\nImpossible key of '%ld' bytes. Byte 0 '%c','%d', byte 1, '%c','%d'\n", ret, answer[0], answer[0], answer[1], answer[1]);
break;
}
}
else if (ret==3){
if ((answer[0]==27 && answer[1]=='[') || (answer[0]==239 && answer[1]==156)) {
switch (answer[2]){
case LEFT_ARROW: case 130: *index=MAX(0, *index-1);
return ARROW_CHANGE_INDEX;
break;
case RIGHT_ARROW: case 131: *index=MIN(keys_nb-1, *index+1);
return ARROW_CHANGE_INDEX;
break;
case UP_ARROW:case 128: return INCREMENT_KEY;
break;
case DOWN_ARROW:case 129: return DECREMENT_KEY;
break;
/* case PAGE_UP:case 172: return FAST_INCREMENT_KEY;
break;
case PAGE_DOWN:case 173: return FAST_DECREMENT_KEY;
break;*/
default: fprintf(stderr, "This key does not have effect\n");
break;
}
}
printf("Answer 0 '%c','%d', answer 1, '%c','%d', 2: '%c','%d'\n" , answer[0], answer[0] , answer[1], answer[1], answer[2], answer[2]);
}else fprintf(stderr, "\nImpossible key of '%ld' bytes. Byte 0 '%c','%d', byte 1, '%c','%d'\n", ret, answer[0], answer[0], answer[1], answer[1]);
return WRONG_KEY;
}
/**Return display size*/
static int display_uchar(int index){
char select_char;
int i;
channel.fprint_graph_uchars(stderr, channel.name, 6, 255, 0);
fprintf(stderr, ">");
FOR(i, keys_nb){
if (index==i) select_char='#';
else select_char=' ';
fprintf(stderr, "|%c%c", select_char, key_list[i]);
}
fprintf(stderr, "|\n");
return 7;
}
/**Return display size*/
static int display_float(int index, float max_value, float min_value){
char select_char;
int i;
channel.fprint_graph_floats(stderr, channel.name, 6, max_value, min_value);
fprintf(stderr, ">");
FOR(i, keys_nb){
if (index==i) select_char='#';
else select_char=' ';
fprintf(stderr, "|%c%c", select_char, key_list[i]);
}
fprintf(stderr, "|\n");
return 7;
}
static void loop_toggle_uchar(){
int ret=NORMAL_KEY, index=0, graph_height;
if (display) graph_height=display_uchar(index);
while (ret!=QUIT_KEY){
ret=update_index(&index);
switch (ret){
case INCREMENT_KEY:
channel.uchars[index]=BLC_NORMED_FLOAT_TO_UCHAR(max_value);
break;
case DECREMENT_KEY: channel.uchars[index]=BLC_NORMED_FLOAT_TO_UCHAR(min_value);
break;
case NEUTRAL_KEY:
channel.uchars[index]=BLC_NORMED_FLOAT_TO_UCHAR(neutral_value);
break;
case INDEX_KEY:
if (channel.uchars[index] > BLC_NORMED_FLOAT_TO_UCHAR(neutral_value)) channel.uchars[index]=BLC_NORMED_FLOAT_TO_UCHAR(min_value);
else channel.uchars[index]=BLC_NORMED_FLOAT_TO_UCHAR(max_value);
case ARROW_CHANGE_INDEX:case QUIT_KEY:
break;
default:color_eprintf(BLC_YELLOW, "Unknownd ret '%d'", ret);
}
if (display){
graph_height=display_uchar(index);
blc_eprint_cursor_up(graph_height);
}
}
}
static void loop_uchar(){
int ret=NORMAL_KEY, index=0, graph_height;
if (display) graph_height=display_uchar(index);
while (ret!=QUIT_KEY){
if (display){
blc_eprint_cursor_up(graph_height);
graph_height=display_uchar(index);
}
ret=update_index(&index);
switch (ret){
case INCREMENT_KEY:
channel.uchars[index]=MIN(channel.uchars[index]+uchar_step_size, BLC_NORMED_FLOAT_TO_UCHAR(max_value));
break;
case DECREMENT_KEY: channel.uchars[index]=MAX(channel.uchars[index]-uchar_step_size, BLC_NORMED_FLOAT_TO_UCHAR(min_value));
break;
/* case FAST_INCREMENT_KEY:
channel.uchars[index]=MIN(channel.uchars[index]+10*uchar_step_size, UINT8_MAX);
previous_index=index;
break;
case FAST_DECREMENT_KEY:
channel.uchars[index]=MAX(channel.uchars[index]-10*uchar_step_size, 0);
break;*/
case NEUTRAL_KEY:
channel.uchars[index]=BLC_NORMED_FLOAT_TO_UCHAR(neutral_value);
break;
case INDEX_KEY:case QUIT_KEY:case ARROW_CHANGE_INDEX:
break;
default:EXIT_ON_ERROR("Unknownd ret '%d'", ret);
}
}
}
static void loop_toggle_float(){
int ret=NORMAL_KEY, index=0, graph_height;
if (display) graph_height=display_float(index, max_value, min_value);
while (ret!=QUIT_KEY){
if (display){
blc_eprint_cursor_up(graph_height);
graph_height=display_float(index, max_value, min_value);
}
ret=update_index(&index);
switch (ret){
case INCREMENT_KEY:
channel.floats[index]=max_value;
break;
case DECREMENT_KEY: channel.floats[index]=min_value;
break;
case NEUTRAL_KEY:
channel.floats[index]=neutral_value;
break;
case INDEX_KEY:
if (channel.floats[index] > neutral_value) channel.floats[index]=min_value;
else channel.floats[index]=max_value;
case ARROW_CHANGE_INDEX:case QUIT_KEY:
break;
default:color_eprintf(BLC_YELLOW, "Unknownd ret '%d'", ret);
}
}
}
static void loop_float(){
int ret=0, index=0, previous_index=0, graph_height;
if (display) graph_height=display_float(index, max_value, min_value);
while (ret!=QUIT_KEY){
if (display){
blc_eprint_cursor_up(graph_height);
graph_height=display_float(index, max_value, min_value);
}
ret=update_index(&index);
switch (ret){
case INCREMENT_KEY: channel.floats[index]=MIN(channel.floats[index]+float_step_size, max_value);
break;
case DECREMENT_KEY: channel.floats[index]=MAX(channel.floats[index]-float_step_size, min_value);
break;
/* case FAST_INCREMENT_KEY: channel.floats[index]+=float_step_size*10;
break;
case FAST_DECREMENT_KEY:channel.floats[index]-=float_step_size*10;
break;*/
case NEUTRAL_KEY:channel.floats[index]=neutral_value;
break;
case INDEX_KEY: case ARROW_CHANGE_INDEX:
previous_index=index;
case QUIT_KEY:break;
default:EXIT_ON_ERROR("Unknownd ret '%d'", ret);
}
}
}
int main(int argc, char** argv){
char *default_output=NULL;
char const *extension;
char const *channel_name, *type_str, *str_quitting_key, *str_neutral_key, *max_str, *min_str, *str_neutral_value, *toggle_mode, *step_size_str, *filename, *file_select_name;
char const *key_nb_str;
blc_channel channel_info;
uint32_t type;
int i;
char *pos;
uchar answer;
blc_array array_select;
asprintf(&default_output, "/%s%d", basename(argv[0]), getpid()); //This will not be free but it is only allocate once
blc_program_set_description("Get keyboard inputs");
blc_program_add_option(&display, 'd', "display", NULL, "Display a text graph", NULL);
blc_program_add_option(&filename, 'f', "file", "filename", "Initialize the values with a tsv file", NULL);
blc_program_add_option((char const**)&key_list, 'k', "key_list", "string", "Define all the keys that can be stroke", NULL);
blc_program_add_option(&min_str, 'm', "min", "real", "Define the normed minimum value", "0.0");
blc_program_add_option(&str_neutral_key, 'n', "neutral_key", "string", "Define the neutral key", "escape");
blc_program_add_option(&channel_name, 'o', "output", "blc_channel", "Define where the result will be put", default_output);
blc_program_add_option(&str_quitting_key, 'q', "quitting_key", "string", "Define the key used to quit", "return");
blc_program_add_option(&key_nb_str, 's', "size", "integer", "Size of key vector", NULL);
blc_program_add_option(&type_str, 't', "type", "UIN8|FL32", "Define the type of the result (default 'UIN8')", NULL);
blc_program_add_option(&file_select_name, 'F', "select", "filename", "File among which values will be selected", NULL);
blc_program_add_option(&max_str, 'M', "max", "real", "Define the normed max value", "1.0");
blc_program_add_option(&str_neutral_value, 'N', "neutral_value", "real", "Define the normed neutral value", "0.5");
blc_program_add_option(&step_size_str, 'S', "step", "real", "Set the normed step size", NULL);
blc_program_add_option(&toggle_mode, 'T', "toggle", NULL, "Set in toggle mode", NULL);
blc_program_init(&argc, &argv, blc_quit);
blc_command_forward_blc_channels();
//This get back normal keyboard behavior (blocking mode) after quitting
atexit(blc_set_back_stdin_mode);
if (strcmp(str_neutral_key, "escape")==0) neutral_key=27; //Escape
else if (strlen(str_neutral_key)!=1) EXIT_ON_ERROR("You can only have one neutral key. You propose '%s'", str_neutral_key);
else neutral_key=str_neutral_key[0];
if (strcmp(str_quitting_key, "return")==0) quitting_key=10; //Escape
else if (strlen(str_quitting_key)!=1) EXIT_ON_ERROR("You can only have one quitting key. You propose '%s'", str_quitting_key);
else quitting_key=str_quitting_key[0];
neutral_value=strtof(str_neutral_value, NULL);
max_value=strtof(max_str, NULL);
min_value=strtof(min_str, NULL);
if (key_nb_str && key_list) EXIT_ON_ERROR("You cannot precise size (-s) '%s' and key_list (-k) '%s' at the same time", key_nb_str, key_list);
else if (key_nb_str) keys_nb=strtod(key_nb_str, NULL);
else if (key_list) keys_nb=strlen(key_list);
else keys_nb=-1;
// if the channel exist, we use it as porpeties
if (blc_channel_get_info_with_name(&channel_info, channel_name)!=-1){
if (type_str==NULL) type=channel_info.type;
else if (STRING_TO_UINT32(type_str)!=channel_info.type) EXIT_ON_CHANNEL_ERROR(&channel_info, "The requested type '%s' differ from the exisiting channel", type_str);
if (keys_nb==-1) keys_nb=channel_info.total_length;
else if (keys_nb!=channel_info.total_length) EXIT_ON_CHANNEL_ERROR(&channel_info, "number of keys(%d) differ from channel length (%d)", keys_nb, channel.total_length);
}
else {
if (type_str) type=STRING_TO_UINT32(type_str);
else type='UIN8'; //default type
}
if (key_list==NULL) {
if (keys_nb==-1){
key_list=(char *)"0123456789abcdef";
keys_nb=strlen(key_list);
}
else {
key_list=MANY_ALLOCATIONS(keys_nb, char);
FOR(i, keys_nb){
if (i<10) key_list[i]=48+i; //01234567890
else if (i<36) key_list[i]=97+i-10; //abc...xyz
else if (i<62) key_list[i]=65+i-36; //ABC...XYZ
else if (i==62) key_list[i]='[';
else if (i==63) key_list[i]=']';
else EXIT_ON_ERROR("Too many keys. You have '%d' max is 64", keys_nb);
}
}
}
if (memchr(key_list, quitting_key, keys_nb)) EXIT_ON_ERROR("The quitting key '%c' is in your key list %.*s, you need to select an other one with --quitting_key=...", quitting_key, keys_nb, key_list);
if (memchr(key_list, neutral_key, keys_nb)) EXIT_ON_ERROR("The neutral key '%c' is in your key list %.*s, you need to select an other one with --neutral_key=...", neutral_key, keys_nb, key_list);
channel.create_or_open(channel_name, BLC_CHANNEL_WRITE, type, 'NDEF', 1, keys_nb);
if (filename){
extension = blc_get_filename_extension(filename);
if(strcmp(extension, "blc")==0) channel.update_with_blc_file(filename);
else if (strcmp(extension, "tsv")==0) channel.update_with_tsv_file(filename);
else EXIT_ON_ERROR("'%s' is not a possible file type extension", extension);
}
else {
switch (type){
case 'UIN8':
FOR(i, keys_nb) channel.uchars[i]=BLC_NORMED_FLOAT_TO_UCHAR(neutral_value);
break;
case 'FL32':
FOR(i, keys_nb) channel.floats[i]=neutral_value;
break;
default:EXIT_ON_ARRAY_ERROR(&channel, "Type not managed");
break;
}
}
if (file_select_name){
extension = blc_get_filename_extension(file_select_name);
if (strcmp(extension, "tsv")!=0) EXIT_ON_ERROR("Only .tsv files are managed, however your extension is '%s' in '%s'.", extension, file_select_name);
}
if (display){
if ((channel.type!='UIN8') && (channel.type!='FL32')) EXIT_ON_ARRAY_ERROR(&channel, "This type can not be displayed. Only 'UIN8' or 'FL32' can.");
}
blc_set_stdin_non_blocking_mode();
fprintf(stderr, "Waiting for one key in '%.*s'. Quitting with '%s'\n", keys_nb, key_list, str_quitting_key);
//We pre calculate the answers
max=min=key_list[0];
FOR(i, keys_nb) {
answer=key_list[i];
if (answer<min) min =answer;
else if (answer>max) max=answer;
}
table.allocate(max-min+1);
FOR(i, table.size){
pos=strchr(key_list, i+min);
if (pos) table.uchars[i]=pos-key_list;
else table.uchars[i]=keys_nb;
}
channel.publish();
switch (channel.type){
case 'UIN8':
if (step_size_str) uchar_step_size=strtod(step_size_str, NULL);
if (toggle_mode) loop_toggle_uchar();
else loop_uchar();
break;
case 'FL32':
if (step_size_str) float_step_size=strtof(step_size_str, NULL);
if (toggle_mode) loop_toggle_float();
else loop_float();
break;
default:
EXIT_ON_ARRAY_ERROR(&channel, "The type is not managed.");
break;
}
return EXIT_SUCCESS;
}