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298 lines
9.1 KiB
C
298 lines
9.1 KiB
C
/*
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* Trivial program to load VT220 Function keys with strings,
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* note that the values only get sent when the key is shifted
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* (shoulda been an option to flip the shift set like the Z19!)
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*
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* Typing no args gives help, basically pairs of keyname/value
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* strings.
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*
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* Author, Author: Barry Shein, Boston University
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*
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* HISTORY
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{1} 30-Oct-85 Kenneth J. Lester (ken) at ektools
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Added the necessary code to read an initialization file. This
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should make it easier to used this program. Also added code
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that will set-up the terminal in vt200 (this saves the user the
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trouble of checking if the set-up is in vt200).
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Restructed the main function to use getopt, for argument
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processing.
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Alterated usage function to include new "i" option (init file)
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-hm minor modifications for pcvt 2.0 release
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*/
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#include <stdio.h>
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#include <ctype.h>
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/*
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* The default toupper() macro is stupid, will toupper anything
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*/
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#ifdef toupper
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#undef toupper
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#endif
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#define toupper(c) (islower(c) ? ((c)-' ') : c)
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#define VT200_7BIT 1
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#define ESC 033
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#define INITFILE ".vt220rc"
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struct keynames {
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char *name ;
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char *string ;
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} keys[] = {
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"F6", "17",
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"F7", "18",
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"F8", "19",
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"F9", "20",
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"F10", "21",
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"F11", "23",
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"ESC", "23",
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"F12", "24",
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"BS", "24",
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"F13", "25",
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"LF", "25",
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"F14", "26",
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"HELP", "28",
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"DO", "29",
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"F17", "31",
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"F18", "32",
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"F19", "33",
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"F20", "34",
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NULL, NULL
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};
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char prog[BUFSIZ];
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main(argc,argv)
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int argc;
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char *argv[];
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{
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/* these are defined in the getopt routine */
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extern char *optarg; /* argument give to an option */
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extern int optind; /* argv index after option processing */
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int option; /* option character returned by getopt */
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int initf = 0; /* read initialization file */
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int lockf = 0; /* lock keys after loading strings */
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int clearf = 0; /* clear all keys before loading strings */
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char *strcpy();
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(void) strcpy(prog, *argv); /* store program name */
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if(argc == 1) usage(); /* program requires options */
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/* get options */
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while ((option = getopt(argc, argv, "cli")) != EOF)
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switch(option)
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{
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case 'c' :
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clearf++;
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break;
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case 'l' :
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lockf++;
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break;
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case 'i' :
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initf++;
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break;
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case '?' :
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usage();
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}
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if (VT200_7BIT)
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printf("\033[62;1\"p"); /* vt200 7 bits */
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else
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printf("\033[62;2\"p"); /* vt200 8 bits */
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if(clearf) clearkeys();
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if (initf) getinit();
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/* process {key, key string} pairs. Note optind is index to argv
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for first pair. By adding 1 to optind insures that a pair exists
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i.e. the last key has a key string. */
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while(optind + 1 < argc)
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{
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dokey(argv[optind], argv[optind+1]);
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optind += 2;
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}
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if(lockf) lockkeys();
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exit(0);
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}
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/****************************************************************************/
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/*
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* Load the VT220 SHIFT-FNKEY value, the basic pattern is
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* "\EP1;1|"+KEYNAME+"/"+VAL_AS_HEX+"\E\\"
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* that is, literally what is in quotes (w/o quotes) then the
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* name of the key from the keytable above (a numeric string)
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* then a slash, then the string value as hex pairs then ESC-BACKSLASH
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*
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* Note: you can gang together key defns with semicolons but that
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* would complicate things, especially error handling, so do it all
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* for each pair, who cares, really.
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*/
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dokey(nm,val) char *nm, *val;
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{
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register char *scr;
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register struct keynames *kp;
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for(scr = nm; *scr = toupper(*scr); scr++)
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;
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for(kp = keys; kp->name != NULL; kp++)
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if(strcmp(nm,kp->name) == 0) {
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printf("%cP1;1|%s/",ESC,kp->string);
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while(*val) printf("%02x",*val++);
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printf("%c\\",ESC);
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fflush(stdout);
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return;
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}
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fprintf(stderr,"Bad key name: %s\n",nm);
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usage(); /* bad key name, give up */
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}
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/****************************************************************************/
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clearkeys()
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{
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printf("%cP0;1|%c\\",ESC,ESC);
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fflush(stdout);
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}
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/****************************************************************************/
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lockkeys()
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{
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printf("%cP1;0|%c\\",ESC,ESC);
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fflush(stdout);
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}
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/****************************************************************************/
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usage()
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{
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int i;
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fprintf(stderr,"Usage: %s [-cil] [keyname string keyname string...]\n\n",prog);
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fprintf(stderr,"The following options are available\n");
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fprintf(stderr,"\t-c\tclears keys first\n");
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fprintf(stderr,"\t-l\t[sets then] locks further setting\n");
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fprintf(stderr,"\t-i\tfirst read initialization file $HOME/%s\n",INITFILE);
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fprintf(stderr,"(note that the only way to unlock is via Set-Up)\n\n");
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fprintf(stderr,"Keyname is one of:\n\t");
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for(i=0; keys[i].name != NULL; i++)
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fprintf(stderr,"%s ",keys[i].name);
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fprintf(stderr,"\nKeyname is SHIFTED function key that sends the string\n\n");
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fprintf(stderr,"Strings may need quoting to protect from shell\n");
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fprintf(stderr,"You must specify an option or key,string pairs\n\n");
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exit(1);
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}
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/****************************************************************************/
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/* This routine process the INITFILE. This file expects lines in the format
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<ws> keyname ws string
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Where ws is white space (spaces or tabs) and <ws> is optional white space.
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The string may include spaces or tabs and need not be quoted. If the
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string has the sequence of "\n" then a newline character is included in
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the string.
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examples:
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F6 ls -lg\n
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F7 uulog -s
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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getinit()
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{
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char *home; /* user's home directory */
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char path[BUFSIZ]; /* full path name of init file */
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char buf[BUFSIZ]; /* buffer to hold 1 line from init file */
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char key[BUFSIZ]; /* buffer, to hold specified fcn key */
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char keystr[BUFSIZ]; /* string associated with fcn key */
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char *ptr; /* pointer to transverse buf */
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int i, j; /* array indices */
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int statflag; /* whether init file is regular & readable */
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struct stat statbuf; /* stat of the init file */
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FILE *fp; /* file pointer to init file */
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/* system calls and subroutines */
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FILE *fopen();
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char *strcpy();
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char *strcat();
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char *fgets();
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char *getenv();
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/* construct full path name for init file */
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home = getenv("HOME");
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(void) strcpy(path, home);
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(void) strcat(path,"/");
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(void) strcat(path,INITFILE);
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/* check status if init file */
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if (stat(path, &statbuf) != -1)
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{
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statflag = statbuf.st_mode & S_IFREG && statbuf.st_mode & S_IREAD;
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if (!statflag || (fp = fopen(path, "r")) == NULL)
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{
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fprintf(stderr, "couldn't open initalization file: %s\n", path);
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exit(1);
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}
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/* process lines from init file */
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while (fgets(buf, BUFSIZ, fp) != NULL)
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{
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/* variable initializations */
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i = 0; j = 0;
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key[0] = '\0'; keystr[0] = '\0';
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ptr = buf;
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while (*ptr == ' ' || *ptr == '\t') ptr++; /*skip whitespace*/
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if (*ptr == '\n') break; /* we hit an emtpy line */
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while (!isspace(*ptr) && *ptr != '\0') /* get keyname */
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key[i++] = *ptr++;
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key[i] = '\0'; /* place EOS in buffer */
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while (*ptr == ' ' || *ptr == '\t') ptr++; /*skip whitespace*/
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while (*ptr != '\n' && *ptr != '\0') /* get string */
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{
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/* check if string is to include newline i.e. \n */
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if (*ptr == '\\' && *(ptr+1) == 'n')
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{
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keystr[j] = '\012';
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ptr++;
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}
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else
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keystr[j] = *ptr;
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j++; ptr++;
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}
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keystr[j] = '\0'; /* place EOS in buffer */
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dokey(key, keystr); /* load key with string */
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}
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}
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else
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{
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fprintf(stderr, "init file %s not found\n\n", path);
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usage();
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}
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}
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