3 Copyright (c) 2011 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "cli/cli-utils.h"
22 #include "gdb_string.h"
27 /* *PP is a string denoting a number. Get the number of the. Advance
28 *PP after the string and any trailing whitespace.
30 Currently the string can either be a number or "$" followed by the
31 name of a convenience variable.
33 TRAILER is a character which can be found after the number; most
34 commonly this is `-'. If you don't want a trailer, use \0. */
37 get_number_trailer (char **pp, int trailer)
39 int retval = 0; /* default */
44 /* Make a copy of the name, so we can null-terminate it
45 to pass to lookup_internalvar(). */
50 while (isalnum (*p) || *p == '_')
52 varname = (char *) alloca (p - start + 1);
53 strncpy (varname, start, p - start);
54 varname[p - start] = '\0';
55 if (get_internalvar_integer (lookup_internalvar (varname), &val))
59 printf_filtered (_("Convenience variable must "
60 "have integer value.\n"));
68 while (*p >= '0' && *p <= '9')
71 /* There is no number here. (e.g. "cond a == b"). */
73 /* Skip non-numeric token. */
74 while (*p && !isspace((int) *p))
76 /* Return zero, which caller must interpret as error. */
82 if (!(isspace (*p) || *p == '\0' || *p == trailer))
84 /* Trailing junk: return 0 and let caller print error msg. */
85 while (!(isspace (*p) || *p == '\0' || *p == trailer))
94 /* See documentation in cli-utils.h. */
97 get_number (char **pp)
99 return get_number_trailer (pp, '\0');
102 /* See documentation in cli-utils.h. */
105 get_number_or_range (char **pp)
107 static int last_retval, end_value;
108 static char *end_ptr;
109 static int in_range = 0;
113 /* Default case: pp is pointing either to a solo number,
114 or to the first number of a range. */
115 last_retval = get_number_trailer (pp, '-');
120 /* This is the start of a range (<number1> - <number2>).
121 Skip the '-', parse and remember the second number,
122 and also remember the end of the final token. */
126 while (isspace ((int) *end_ptr))
127 end_ptr++; /* skip white space */
128 end_value = get_number (temp);
129 if (end_value < last_retval)
131 error (_("inverted range"));
133 else if (end_value == last_retval)
135 /* Degenerate range (number1 == number2). Advance the
136 token pointer so that the range will be treated as a
145 error (_("negative value"));
148 /* pp points to the '-' that betokens a range. All
149 number-parsing has already been done. Return the next
150 integer value (one greater than the saved previous value).
151 Do not advance the token pointer 'pp' until the end of range
154 if (++last_retval == end_value)
156 /* End of range reached; advance token pointer. */
164 /* Accept a number and a string-form list of numbers such as is
165 accepted by get_number_or_range. Return TRUE if the number is
168 By definition, an empty list includes all numbers. This is to
169 be interpreted as typing a command such as "delete break" with
173 number_is_in_list (char *list, int number)
175 if (list == NULL || *list == '\0')
178 while (list != NULL && *list != '\0')
179 if (get_number_or_range (&list) == number)
185 /* See documentation in cli-utils.h. */
188 skip_spaces (char *chp)
192 while (*chp && isspace (*chp))
197 /* See documentation in cli-utils.h. */
200 skip_to_space (char *chp)
204 while (*chp && !isspace (*chp))