2 * $Id: argv.c,v 1.12 2018/06/12 22:47:23 tom Exp $
4 * argv - Reusable functions for argv-parsing.
6 * Copyright 2011-2017,2018 Thomas E. Dickey
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License, version 2.1
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, write to
19 * Free Software Foundation, Inc.
20 * 51 Franklin St., Fifth Floor
21 * Boston, MA 02110, USA.
28 * Convert a string to an argv[], returning a char** index (which must be
29 * freed by the caller). The string is modified (replacing gaps between
33 dlg_string_to_argv(char *blob)
37 size_t length = strlen(blob);
41 if (dialog_state.trace_output) {
42 DLG_TRACE(("# dlg_string_to_argv:\n"));
43 DLG_TRACE(("# given:\n"));
44 for (n = k = 0; n < length; ++n) {
45 if (blob[n] == '\n') {
46 DLG_TRACE(("#%s\t%.*s\\n\n",
48 (int) (n - k), blob + k));
53 DLG_TRACE(("#%s\t%.*s\n",
55 (int) (n - k), blob + k));
57 DLG_TRACE(("# result:\n"));
60 for (pass = 0; pass < 2; ++pass) {
67 for (n = 0; n < length; ++n) {
70 } else if (quoted && blob[n] == '"') {
72 } else if (blob[n] == '"') {
76 result[count] = param;
80 } else if (!quoted && isspace(UCH(blob[n]))) {
88 if (blob[n] == '\\') {
89 if (n + 1 == length) {
90 break; /* The string is terminated by a backslash */
91 } else if ((blob[n + 1] == '\\') ||
92 (blob[n + 1] == '"') ||
93 (!quoted && blob[n + 1] == '\n')) {
94 /* eat the backslash */
97 for (k = n; k < length; ++k)
98 blob[k] = blob[k + 1];
108 result[count] = param;
121 result = dlg_calloc(char *, count + 1);
122 assert_ptr(result, "string_to_argv");
124 break; /* no tokens found */
130 #ifdef HAVE_DLG_TRACE
132 for (n = 0; result[n] != 0; ++n) {
133 DLG_TRACE(("#\targv[%d] = %s\n", (int) n, result[n]));
141 * Count the entries in an argv list.
144 dlg_count_argv(char **argv)
149 while (argv[result] != 0)
156 dlg_eat_argv(int *argcp, char ***argvp, int start, int count)
161 for (k = start; k <= *argcp; k++)
162 (*argvp)[k] = (*argvp)[k + count];
163 (*argvp)[*argcp] = 0;