--- /dev/null
+
+
+/* history.c */
+/* Command history. */
+/* This code is released to the public domain. */
+/* "Share and enjoy...." ;) */
+/* See the UNLICENSE file for details. */
+
+
+
+/* Helper function, to let us see if a file */
+/* exists in the current directory. */
+int fexists(char *fname)
+{
+ FILE *fptr;
+ fptr = fopen(fname, "r") ;
+ if ( !fptr ) return -1 ; /* File does not exist in dir. */
+ fclose(fptr);
+ return 0; /* File DOES exist in dir. */
+}
+
+
+/* Helper function to chop newlines off the lines read in. */
+/* Without this being done, an extra newline is inserted */
+/* (which is usually not what is wanted). */
+char *chop(char *s)
+{
+ s[strcspn(s,"\n")] = '\0';
+ return s;
+}
+
+
+/* An array to store the command-history file in. */
+/* Only 20 lines are read. */
+char hist[20][80];
+
+
+
+/* Read the file into the array of strings. */
+void readhistory(char *fname)
+{
+ int retval = fexists(fname);
+
+ int i;
+ if (retval == 0) {
+ /* File exists, so open it. */
+ /* We open it in read-write mode so we can */
+ /* append new commands to it. */
+ FILE *fptr;
+ fptr = fopen(fname, "rw");
+
+ for(i=0; i<20; i++)
+ {
+ chop(fgets(hist[i], 80, fptr) );
+ }
+
+ } /* retval == 0 */
+
+ else puts("Error! File does not exist. \n");
+
+}
+
+
+
+
--- /dev/null
+
+
+
+/* keyhandler.c */
+/* Handle keystrokes for pd_readline. */
+/* This code is released to the public domain. */
+/* "Share and enjoy...." ;) */
+/* See the UNLICENSE file for details. */
+
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <termios.h>
+
+
+/* This implementation of getch() is from here - */
+/* http://wesley.vidiqatch.org/ */
+/* Thanks, Wesley! */
+static struct termios old, new;
+
+/* Initialize new terminal i/o settings */
+void initTermios(int echo) {
+ tcgetattr(0, &old); /* grab old terminal i/o settings */
+ new = old; /* make new settings same as old settings */
+ new.c_lflag &= ~ICANON; /* disable buffered i/o */
+ new.c_lflag &= echo ? ECHO : ~ECHO; /* set echo mode */
+ tcsetattr(0, TCSANOW, &new); /* use these new terminal i/o settings now */
+}
+
+
+/* Restore old terminal i/o settings */
+void resetTermios(void) {
+ tcsetattr(0, TCSANOW, &old);
+}
+
+
+/* Read 1 character - echo defines echo mode */
+char getch_(int echo) {
+ char ch;
+ initTermios(echo);
+ ch = getchar();
+ resetTermios();
+ return ch;
+}
+
+
+/* Read 1 character without echo */
+char getch(void) {
+ return getch_(0);
+}
+
+
+/* Read 1 character with echo */
+char getche(void) {
+ return getch_(1);
+}
+
+
+
+int keyhandler(void)
+{
+ int i = getch();
+
+ switch(i);
+ {
+ case (27): escape() ;
+ case (33): dosomething();
+ case (42): something();
+ default: stuff():
+ }
+
+}
+
+
+
+
/* Ctrl-C and Ctrl-V. */
-#include <string.h>
-#include <stdio.h>
-#include <termios.h>
-
-/* This implementation of getch() is from here - */
-/* http://wesley.vidiqatch.org/ */
-/* Thanks, Wesley! */
-static struct termios old, new;
-
-/* Initialize new terminal i/o settings */
-void initTermios(int echo) {
- tcgetattr(0, &old); /* grab old terminal i/o settings */
- new = old; /* make new settings same as old settings */
- new.c_lflag &= ~ICANON; /* disable buffered i/o */
- new.c_lflag &= echo ? ECHO : ~ECHO; /* set echo mode */
- tcsetattr(0, TCSANOW, &new); /* use these new terminal i/o settings now */
-}
-
-
-/* Restore old terminal i/o settings */
-void resetTermios(void) {
- tcsetattr(0, TCSANOW, &old);
-}
-
-
-/* Read 1 character - echo defines echo mode */
-char getch_(int echo) {
- char ch;
- initTermios(echo);
- ch = getchar();
- resetTermios();
- return ch;
-}
-
-
-/* Read 1 character without echo */
-char getch(void) {
- return getch_(0);
-}
-
-
-/* Read 1 character with echo */
-char getche(void) {
- return getch_(1);
-}
-
-
-
-/* Helper function, to let us see if a file */
-/* exists in the current directory. */
-int fexists(char *fname)
-{
- FILE *fptr;
- fptr = fopen(fname, "r") ;
- if ( !fptr ) return -1 ; /* File does not exist in dir. */
- fclose(fptr);
- return 0; /* File DOES exist in dir. */
-}
-
-
-/* Helper function to chop newlines off the lines read in. */
-/* Without this being done, an extra newline is inserted */
-/* (which is usually not what is wanted). */
-char *chop(char *s)
-{
- s[strcspn(s,"\n")] = '\0';
- return s;
-}
-
-
-/* An array to store the command-history file in. */
-/* Only 20 lines are read. */
-char hist[20][80];
-
-
-
-/* Read the file into the array of strings. */
-void readfile(char *fname)
-{
- int retval = fexists(fname);
-
- int i;
- if (retval == 0) {
- /* File exists, so open it. */
- /* We open it in read-write mode so we can */
- /* append new commands to it. */
- FILE *fptr;
- fptr = fopen(fname, "rw");
-
- for(i=0; i<20; i++)
- {
- chop(fgets(hist[i], 80, fptr) );
- }
-
- } /* retval == 0 */
-
- else puts("Error! File does not exist. \n");
-
-}
-
-
-/* Helper function to print the command-history file. */
-void printfile(void)
-{
- int j;
-
- for(j=0; j<20; j++)
- {
- puts(hist[j]);
- }
-}
-
-
-
-
-/* Helper function. Print a previous command-line WITHOUT */
-/* a newline. */
-void putline(char *str)
-{
- char *line = chop(str);
- printf("%s", line);
-}
-
int main(void)
{
-
-/* Our "command-history" file. */
-readfile("test.txt");
-
-
-/* "Pointer" for the history file. */
-int histpnt = 20;
-
+
+ /* Read in the command history file. */
+ readhistory();
+
while(1)
- {
-
- int key = getch();
+ {
- /* Printable chars. */
- if ( (key >= 32) && (key <= 126) )
- {
- /* We have a printable key so print it. */
- putchar(key);
- }
-
- /* Up arrow is 27, 91, 65. ( ESC [ A ) */
- /* Down arrow is 27, 91, 66. ( ESC [ B ) */
- /* Right arrow is 27, 91, 67. ( ESC [ C ) */
- /* Left arrow is 27, 91, 68. ( ESC [ D ) */
- /* Function keys. */
- /* F2 is 27, 79, 81. */
- /* F3 is 27, 79, 82. */
- /* F4 is 27, 79, 83. */
-
- /* Backspace */
- else if(key == 127)
- {
- /* Move left 1 char and delete that char */
- printf("\033[1D");
- printf("\040");
- printf("\033[1D");
- }
+ keyhandler();
- /* We have an escape key-sequence */
- else if(key == 27)
- {
- key = getch();
- if(key == 91)
- key = getch();
-
- if (key == 65) /* Up Arrow */
- {
- /* Move one command "back" in history. */
- histpnt -= 1;
- /* Clear to end of line. */
- printf("\033[80D");
- printf("\033[K");
- /* Print the pointed-at command-sequence. */
- putline(hist[histpnt]);
- }
-
- if(key == 66) /* Down Arrow */
- {
- /* Move one command "forward" in history. */
- histpnt += 1;
- /* Clear to end of line. */
- printf("\033[80D");
- printf("\033[K");
- /* Print the pointed-at command-sequence. */
- putline(hist[histpnt]);
- }
-
- if(key == 67) /* Left arrow */
- {
- /* Move one character to the left. */
- printf("\033[1C");
- }
-
- if(key == 68) /* Right arrow */
- {
- /* Move one character to the right. */
- printf("\033[1D");
- }
-
- } /* End of key=27 key sequence. */
-
-
- /* The Enter key exits. Enter is 10 decimal */
- else if(key == 10)
- {
- puts("\n");
- puts("Exiting... \n");
- break;
- } /* Key = Enter */
- }
+ }
- return 0;
-
+ return 0;
+
}