126 lines
2.4 KiB
C
126 lines
2.4 KiB
C
/*
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* psql - the PostgreSQL interactive terminal
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*
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* Copyright 2000 by PostgreSQL Global Development Group
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*
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* $Header: /cvsroot/pgsql/src/bin/psql/Attic/sprompt.c,v 1.2 2002/07/06 20:14:58 momjian Exp $
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*/
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/* This file is shared by psql and pg_dump. */
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/*
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* simple_prompt
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*
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* Generalized function especially intended for reading in usernames and
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* password interactively. Reads from /dev/tty or stdin/stderr.
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*
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* prompt: The prompt to print
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* maxlen: How many characters to accept
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* echo: Set to false if you want to hide what is entered (for passwords)
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*
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* Returns a malloc()'ed string with the input (w/o trailing newline).
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*/
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#include "postgres_fe.h"
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#ifdef HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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bool prompt_state = false;
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extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
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char *
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simple_prompt(const char *prompt, int maxlen, bool echo)
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{
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int length;
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char *destination;
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FILE *termin,
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*termout;
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#ifdef HAVE_TERMIOS_H
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struct termios t_orig,
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t;
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#endif
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destination = (char *) malloc(maxlen + 2);
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if (!destination)
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return NULL;
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prompt_state = true; /* disable SIGINT */
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/*
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* Do not try to collapse these into one "w+" mode file. Doesn't work
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* on some platforms (eg, HPUX 10.20).
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*/
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termin = fopen("/dev/tty", "r");
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termout = fopen("/dev/tty", "w");
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if (!termin || !termout)
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{
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if (termin)
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fclose(termin);
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if (termout)
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fclose(termout);
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termin = stdin;
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termout = stderr;
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}
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#ifdef HAVE_TERMIOS_H
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if (!echo)
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{
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tcgetattr(fileno(termin), &t);
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t_orig = t;
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t.c_lflag &= ~ECHO;
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tcsetattr(fileno(termin), TCSAFLUSH, &t);
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}
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#endif
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if (prompt)
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{
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fputs(gettext(prompt), termout);
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fflush(termout);
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}
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if (fgets(destination, maxlen, termin) == NULL)
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destination[0] = '\0';
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length = strlen(destination);
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if (length > 0 && destination[length - 1] != '\n')
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{
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/* eat rest of the line */
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char buf[128];
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int buflen;
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do
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{
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if (fgets(buf, sizeof(buf), termin) == NULL)
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break;
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buflen = strlen(buf);
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} while (buflen > 0 && buf[buflen - 1] != '\n');
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}
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if (length > 0 && destination[length - 1] == '\n')
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/* remove trailing newline */
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destination[length - 1] = '\0';
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#ifdef HAVE_TERMIOS_H
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if (!echo)
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{
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tcsetattr(fileno(termin), TCSAFLUSH, &t_orig);
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fputs("\n", termout);
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fflush(termout);
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}
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#endif
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if (termin != stdin)
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{
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fclose(termin);
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fclose(termout);
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}
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prompt_state = false; /* SIGINT okay again */
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return destination;
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}
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