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Diffstat (limited to 'src/bin/psql/sprompt.c')
-rw-r--r--src/bin/psql/sprompt.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/bin/psql/sprompt.c b/src/bin/psql/sprompt.c
new file mode 100644
index 00000000000..c9c2ab5cfc1
--- /dev/null
+++ b/src/bin/psql/sprompt.c
@@ -0,0 +1,121 @@
+/*
+ * psql - the PostgreSQL interactive terminal
+ *
+ * Copyright 2000 by PostgreSQL Global Development Group
+ *
+ * $Header: /cvsroot/pgsql/src/bin/psql/Attic/sprompt.c,v 1.1 2002/07/06 20:12:30 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_fe.h"
+
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#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;
+#endif
+
+ destination = (char *) malloc(maxlen + 2);
+ 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);
+ }
+#endif
+
+ if (prompt)
+ {
+ fputs(gettext(prompt), termout);
+ fflush(termout);
+ }
+
+ if (fgets(destination, maxlen, 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);
+ }
+#endif
+
+ if (termin != stdin)
+ {
+ fclose(termin);
+ fclose(termout);
+ }
+
+ prompt_state = false; /* SIGINT okay again */
+
+ return destination;
+}