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- #include <stdio.h>
- #include <ctype.h>
-
- void GetString(string, size, nullOK)
- char *string;
- int size;
- int nullOK;
-
- /*
- ---------------------------------------------------------------------------
-
- Last revision -
- 16 November 1984 - GWS
- Ignore XON, XOFF
-
- 11 April 1984 - GWS
-
-
- NAME
- GetString - "crash-proof" routine for terminal input of string
-
- SYNOPSIS
- void GetString(string, size, nullOK)
- char *string;
- int size;
- int nullOK;
-
- DESCRIPTION
- This routine prompts and nudges the user through entry of a
- character string. 'Size' is the number of characters in'string'.
- 'String' should therefore be dimensioned to size + 1.
- 'NullOK' is a boolean that tells us whether a null string is
- acceptable.
-
- SEE ALSO
-
-
- DIAGNOSTICS
- none
-
- BUGS
- none known
-
- AUTHOR
- George W. Sherouse
- 11 April 1984
-
- ---------------------------------------------------------------------------
- */
-
- {
- int c;
- char erase;
- int loop;
- int cookie;
- int count;
-
- void underline();
- int tgetnum();
- char TermSetUp();
- void TermRewind();
-
- if ((cookie = tgetnum("ug")) < 0)
- cookie = 0;
-
- underline(1);
- for (loop = 0; loop < size; loop++)
- {
- printf(" ");
- string[loop] = (char) 0;
- }
- string[size] = (char) 0;
-
- if (cookie)
- {
- underline(0);
- TermRewind(cookie);
- }
- TermRewind(size);
-
- erase = TermSetUp(); /* set no echo, single char input */
- /* get erase character */
-
- count = 0;
- while (1)
- {
- switch (c = (getchar() & 0177))
- {
- case '\015':
- if (count || nullOK)
- {
- for (loop = count; loop < size; loop++)
- printf(" ");
- underline(0);
- (void) TermSetUp();
- return;
- }
- else
- {
- printf("%c", '\007');
- break;
- }
- case '\030':
- while (count)
- {
- string[--count] = (char) 0;
- printf("\b \b");
- }
- break;
- case '\021':
- case '\023':
- break;
- default:
- if (count && c == erase)
- {
- printf("\b \b");
- string[--count] = (char) 0;
- break;
- }
-
- if (isprint(c) && count < size)
- {
- printf("%c", c);
- string[count++] = c;
- break;
- }
-
- printf("%c", '\007');
- }
- }
- }
-