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annotate termhelper.c @ 915:9e882eca717e

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Initial support for relative mouse mode and skeleton of support for capture mode. Avoid mouse position overflow in absolute mode. Allow absolute mode to be set by ROM DB.
author Michael Pavone <pavone@retrodev.com>
date Tue, 15 Dec 2015 20:01:50 -0800
parents 792be135d3af
children
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794
792be135d3af Spawn a terminal for the debugger when needed if we are not already attached to one
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1 #include <sys/types.h>
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2 #include <sys/stat.h>
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3 #include <fcntl.h>
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4 #include <unistd.h>
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5 #include <stdlib.h>
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6 #include "terminal.h"
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7
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8 char buf[4096];
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9
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10 void copy_data(int to, int from)
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11 {
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12 ssize_t bytes = read(from, buf, sizeof(buf));
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13 while (bytes > 0)
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14 {
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15 ssize_t written = write(to, buf, bytes);
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16 if (written == -1) {
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17 exit(1);
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18 }
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19 bytes -= written;
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20 }
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21 }
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22
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23 int main(int argc, char **argv)
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24 {
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25 //these will block so order is important
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26 int input_fd = open(INPUT_PATH, O_WRONLY);
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27 int output_fd = open(OUTPUT_PATH, O_RDONLY);
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28 fd_set read_fds;
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29 FD_ZERO(&read_fds);
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30 for (;;)
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31 {
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32 FD_SET(STDIN_FILENO, &read_fds);
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33 FD_SET(output_fd, &read_fds);
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34 select(output_fd+1, &read_fds, NULL, NULL, NULL);
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35
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36 if (FD_ISSET(STDIN_FILENO, &read_fds)) {
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37 copy_data(input_fd, STDIN_FILENO);
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38 }
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39 if (FD_ISSET(output_fd, &read_fds)) {
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40 copy_data(STDOUT_FILENO, output_fd);
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41 }
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42 }
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43 return 0;
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44 }