Move simple_prompt()/sprompt.c into /port.

src/port/sprompt.c

@@ -0,0 +1,158 @@
+/*
+ * psql - the PostgreSQL interactive terminal
+ *
+ * Copyright 2000 by PostgreSQL Global Development Group
+ *
+ * $Header: /cvsroot/pgsql/src/port/sprompt.c,v 1.1 2003/08/08 04:52:22 momjian Exp $
+ */
+
+
+/*
+ * simple_prompt
+ *
+ * Generalized function especially intended for reading in usernames and
+ * password interactively. Reads from /dev/tty or stdin/stderr.
+ *
+ * prompt:		The prompt to print
+ * maxlen:		How many characters to accept
+ * echo:		Set to false if you want to hide what is entered (for passwords)
+ *
+ * Returns a malloc()'ed string with the input (w/o trailing newline).
+ */
+#include "postgres.h"
+
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#else
+#ifdef WIN32
+#include <windows.h>
+#endif
+#endif
+
+bool		prompt_state = false;
+extern char *simple_prompt(const char *prompt, int maxlen, bool echo);
+
+char *
+simple_prompt(const char *prompt, int maxlen, bool echo)
+{
+	int			length;
+	char	   *destination;
+	FILE	   *termin,
+			   *termout;
+
+#ifdef HAVE_TERMIOS_H
+	struct termios t_orig,
+				t;
+
+#else
+#ifdef WIN32
+	HANDLE		t;
+	LPDWORD		t_orig;
+#endif
+#endif
+
+	destination = (char *) malloc(maxlen + 1);
+	if (!destination)
+		return NULL;
+
+	prompt_state = true;		/* disable SIGINT */
+
+	/*
+	 * Do not try to collapse these into one "w+" mode file. Doesn't work
+	 * on some platforms (eg, HPUX 10.20).
+	 */
+	termin = fopen("/dev/tty", "r");
+	termout = fopen("/dev/tty", "w");
+	if (!termin || !termout)
+	{
+		if (termin)
+			fclose(termin);
+		if (termout)
+			fclose(termout);
+		termin = stdin;
+		termout = stderr;
+	}
+
+#ifdef HAVE_TERMIOS_H
+	if (!echo)
+	{
+		tcgetattr(fileno(termin), &t);
+		t_orig = t;
+		t.c_lflag &= ~ECHO;
+		tcsetattr(fileno(termin), TCSAFLUSH, &t);
+	}
+#else
+#ifdef WIN32
+	if (!echo)
+	{
+		/* get a new handle to turn echo off */
+		t_orig = (LPDWORD) malloc(sizeof(DWORD));
+		t = GetStdHandle(STD_INPUT_HANDLE);
+
+		/* save the old configuration first */
+		GetConsoleMode(t, t_orig);
+
+		/* set to the new mode */
+		SetConsoleMode(t, ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT);
+	}
+#endif
+#endif
+
+	if (prompt)
+	{
+		fputs(gettext(prompt), termout);
+		fflush(termout);
+	}
+
+	if (fgets(destination, maxlen + 1, termin) == NULL)
+		destination[0] = '\0';
+
+	length = strlen(destination);
+	if (length > 0 && destination[length - 1] != '\n')
+	{
+		/* eat rest of the line */
+		char		buf[128];
+		int			buflen;
+
+		do
+		{
+			if (fgets(buf, sizeof(buf), termin) == NULL)
+				break;
+			buflen = strlen(buf);
+		} while (buflen > 0 && buf[buflen - 1] != '\n');
+	}
+
+	if (length > 0 && destination[length - 1] == '\n')
+		/* remove trailing newline */
+		destination[length - 1] = '\0';
+
+#ifdef HAVE_TERMIOS_H
+	if (!echo)
+	{
+		tcsetattr(fileno(termin), TCSAFLUSH, &t_orig);
+		fputs("\n", termout);
+		fflush(termout);
+	}
+#else
+#ifdef WIN32
+	if (!echo)
+	{
+		/* reset to the original console mode */
+		SetConsoleMode(t, *t_orig);
+		fputs("\n", termout);
+		fflush(termout);
+		free(t_orig);
+	}
+#endif
+#endif
+
+	if (termin != stdin)
+	{
+		fclose(termin);
+		fclose(termout);
+	}
+
+	prompt_state = false;		/* SIGINT okay again */
+
+	return destination;
+}