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Diffstat (limited to 'Build/source/utils/dialog/dialog-1.1-20110302/argv.c')
-rw-r--r-- | Build/source/utils/dialog/dialog-1.1-20110302/argv.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/Build/source/utils/dialog/dialog-1.1-20110302/argv.c b/Build/source/utils/dialog/dialog-1.1-20110302/argv.c new file mode 100644 index 00000000000..c0902904406 --- /dev/null +++ b/Build/source/utils/dialog/dialog-1.1-20110302/argv.c @@ -0,0 +1,128 @@ +/* + * $Id: argv.c,v 1.1 2011/03/02 09:56:39 tom Exp $ + * + * argv - Reusable functions for argv-parsing. + * + * Copyright 2011 Thomas E. Dickey + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License, version 2.1 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, write to + * Free Software Foundation, Inc. + * 51 Franklin St., Fifth Floor + * Boston, MA 02110, USA. + */ + +#include <dialog.h> +#include <string.h> + +/* + * Convert a string to an argv[], returning a char** index (which must be + * freed by the caller). The string is modified (replacing gaps between + * tokens with nulls). + */ +char ** +dlg_string_to_argv(char *blob) +{ + size_t n; + int pass; + size_t length = strlen(blob); + char **result = 0; + + for (pass = 0; pass < 2; ++pass) { + bool inparm = FALSE; + bool quoted = FALSE; + char *param = blob; + size_t count = 0; + + for (n = 0; n < length; ++n) { + if (quoted && blob[n] == '"') { + quoted = FALSE; + } else if (blob[n] == '"') { + quoted = TRUE; + if (!inparm) { + if (pass) + result[count] = param; + ++count; + inparm = TRUE; + } + } else if (blob[n] == '\\') { + if (quoted && !isspace(UCH(blob[n + 1]))) { + if (!inparm) { + if (pass) + result[count] = param; + ++count; + inparm = TRUE; + } + if (pass) { + *param++ = blob[n]; + *param++ = blob[n + 1]; + } + } + ++n; + } else if (!quoted && isspace(UCH(blob[n]))) { + inparm = FALSE; + if (pass) { + *param++ = '\0'; + } + } else { + if (!inparm) { + if (pass) + result[count] = param; + ++count; + inparm = TRUE; + } + if (pass) { + *param++ = blob[n]; + } + } + } + + if (!pass) { + if (count) { + result = dlg_calloc(char *, count + 1); + assert_ptr(result, "string_to_argv"); + } else { + break; /* no tokens found */ + } + } else { + *param = '\0'; + } + } + return result; +} + +/* + * Count the entries in an argv list. + */ +int +dlg_count_argv(char **argv) +{ + int result = 0; + + if (argv != 0) { + while (argv[result] != 0) + ++result; + } + return result; +} + +int +dlg_eat_argv(int *argcp, char ***argvp, int start, int count) +{ + int k; + + *argcp -= count; + for (k = start; k <= *argcp; k++) + (*argvp)[k] = (*argvp)[k + count]; + (*argvp)[*argcp] = 0; + return TRUE; +} |