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2004-02-23 Jeff Johnston <jjohnstn@redhat.com>

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* defs.h (nquery, yquery): New prototypes.
        * breakpoint.c (break_command_1): Use new nquery interface.
        * utils.c (defaulted_query, nquery, yquery): New functions.
This commit is contained in:
Jeff Johnston 2004-02-23 19:26:14 +00:00
parent 8ee9a8b2e7
commit cbdeadcaa3
4 changed files with 150 additions and 1 deletions
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139
gdb/utils.c
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@ -1335,6 +1335,145 @@ query (const char *ctlstr, ...)
}
/* This function supports the nquery() and yquery() functions.
Ask user a y-or-n question and return 0 if answer is no, 1 if
answer is yes, or default the answer to the specified default.
DEFCHAR is either 'y' or 'n' and refers to the default answer.
CTLSTR is the control string and should end in "? ". It should
not say how to answer, because we do that.
ARGS are the arguments passed along with the CTLSTR argument to
printf. */
static int
defaulted_query (const char *ctlstr, const char defchar, va_list args)
{
int answer;
int ans2;
int retval;
int def_value;
char def_answer, not_def_answer;
char *y_string, *n_string;
/* Set up according to which answer is the default. */
if (defchar == 'y')
{
def_value = 1;
def_answer = 'Y';
not_def_answer = 'N';
y_string = "[y]";
n_string = "n";
}
else
{
def_value = 0;
def_answer = 'N';
not_def_answer = 'Y';
y_string = "y";
n_string = "[n]";
}
if (query_hook)
{
return query_hook (ctlstr, args);
}
/* Automatically answer default value if input is not from a terminal. */
if (!input_from_terminal_p ())
return def_value;
while (1)
{
wrap_here (""); /* Flush any buffered output */
gdb_flush (gdb_stdout);
if (annotation_level > 1)
printf_filtered ("\n\032\032pre-%cquery\n", defchar);
vfprintf_filtered (gdb_stdout, ctlstr, args);
printf_filtered ("(%s or %s) ", y_string, n_string);
if (annotation_level > 1)
printf_filtered ("\n\032\032%cquery\n", defchar);
wrap_here ("");
gdb_flush (gdb_stdout);
answer = fgetc (stdin);
clearerr (stdin); /* in case of C-d */
if (answer == EOF) /* C-d */
{
retval = def_value;
break;
}
/* Eat rest of input line, to EOF or newline */
if (answer != '\n')
do
{
ans2 = fgetc (stdin);
clearerr (stdin);
}
while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
if (answer >= 'a')
answer -= 040;
/* Check answer. For the non-default, the user must specify
the non-default explicitly. */
if (answer == not_def_answer)
{
retval = !def_value;
break;
}
/* Otherwise, for the default, the user may either specify
the required input or have it default by entering nothing. */
if (answer == def_answer || answer == '\n' ||
answer == '\r' || answer == EOF)
{
retval = def_value;
break;
}
/* Invalid entries are not defaulted and require another selection. */
printf_filtered ("Please answer %s or %s.\n",
y_string, n_string);
}
if (annotation_level > 1)
printf_filtered ("\n\032\032post-%cquery\n", defchar);
return retval;
}
/* Ask user a y-or-n question and return 0 if answer is no, 1 if
answer is yes, or 0 if answer is defaulted.
Takes three args which are given to printf to print the question.
The first, a control string, should end in "? ".
It should not say how to answer, because we do that. */
int
nquery (const char *ctlstr, ...)
{
va_list args;
va_start (args, ctlstr);
return defaulted_query (ctlstr, 'n', args);
va_end (args);
}
/* Ask user a y-or-n question and return 0 if answer is no, 1 if
answer is yes, or 1 if answer is defaulted.
Takes three args which are given to printf to print the question.
The first, a control string, should end in "? ".
It should not say how to answer, because we do that. */
int
yquery (const char *ctlstr, ...)
{
va_list args;
va_start (args, ctlstr);
return defaulted_query (ctlstr, 'y', args);
va_end (args);
}
/* Print an error message saying that we couldn't make sense of a
\^mumble sequence in a string or character constant. START and END
indicate a substring of some larger string that contains the