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Fix saveHistory() to not emit bogus complaint during psql exit when using

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Darwin's libedit; per my proposal last August.  Also, suppress cast-away-
const warnings.
This commit is contained in:
Tom Lane 2006-06-18 17:30:48 +00:00
parent f1e671a0b4
commit 22045666d6
1 changed files with 23 additions and 8 deletions
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31
src/bin/psql/input.c
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@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/bin/psql/input.c,v 1.55 2006/06/14 16:49:02 tgl Exp $
* $PostgreSQL: pgsql/src/bin/psql/input.c,v 1.56 2006/06/18 17:30:48 tgl Exp $
*/
#include "postgres_fe.h"
@ -245,11 +245,14 @@ encode_history(void)
HIST_ENTRY *cur_hist;
char *cur_ptr;
for (history_set_pos(0), cur_hist = current_history();
cur_hist; cur_hist = next_history())
for (cur_ptr = cur_hist->line; *cur_ptr; cur_ptr++)
history_set_pos(0);
for (cur_hist = current_history(); cur_hist; cur_hist = next_history())
{
/* some platforms declare HIST_ENTRY.line as const char * */
for (cur_ptr = (char *) cur_hist->line; *cur_ptr; cur_ptr++)
if (*cur_ptr == '\n')
*cur_ptr = NL_IN_HISTORY;
}
}
/*
@ -261,11 +264,14 @@ decode_history(void)
HIST_ENTRY *cur_hist;
char *cur_ptr;
for (history_set_pos(0), cur_hist = current_history();
cur_hist; cur_hist = next_history())
for (cur_ptr = cur_hist->line; *cur_ptr; cur_ptr++)
history_set_pos(0);
for (cur_hist = current_history(); cur_hist; cur_hist = next_history())
{
/* some platforms declare HIST_ENTRY.line as const char * */
for (cur_ptr = (char *) cur_hist->line; *cur_ptr; cur_ptr++)
if (*cur_ptr == NL_IN_HISTORY)
*cur_ptr = '\n';
}
}
#endif /* USE_READLINE */
@ -339,13 +345,22 @@ saveHistory(char *fname, bool encodeFlag)
{
if (encodeFlag)
encode_history();
if (write_history(fname) == 0)
/*
* return value of write_history is not standardized across GNU
* readline and libedit. Therefore, check for errno becoming set
* to see if the write failed.
*/
errno = 0;
(void) write_history(fname);
if (errno == 0)
return true;
psql_error("could not save history to file \"%s\": %s\n",
fname, strerror(errno));
}
#else
/* only get here in \s case, so complain */
psql_error("history is not supported by this installation\n");
#endif