Function usershell

ThirdParty/libxml2/vtklibxml2/xmlcatalog.c:92–285

}

static void usershell(void) {
    char *cmdline = NULL, *cur;
    int nbargs;
    char command[100];
    char arg[400];
    char *argv[20];
    int i, ret;
    xmlChar *ans;

    while (1) {
	cmdline = xmlShellReadline("> ");
	if (cmdline == NULL)
	    return;

	/*
	 * Parse the command itself
	 */
	cur = cmdline;
	nbargs = 0;
	while ((*cur == ' ') || (*cur == '\t')) cur++;
	i = 0;
	while ((*cur != ' ') && (*cur != '\t') &&
	       (*cur != '\n') && (*cur != '\r')) {
	    if (*cur == 0)
		break;
	    command[i++] = *cur++;
	}
	command[i] = 0;
	if (i == 0) {
	    free(cmdline);
	    continue;
	}

	/*
	 * Parse the argument string
	 */
	memset(arg, 0, sizeof(arg));
	while ((*cur == ' ') || (*cur == '\t')) cur++;
	i = 0;
	while ((*cur != '\n') && (*cur != '\r') && (*cur != 0)) {
	    if (*cur == 0)
		break;
	    arg[i++] = *cur++;
	}
	arg[i] = 0;

	/*
	 * Parse the arguments
	 */
	i = 0;
	nbargs = 0;
	cur = arg;
	memset(argv, 0, sizeof(argv));
	while (*cur != 0) {
	    while ((*cur == ' ') || (*cur == '\t')) cur++;
	    if (*cur == '\'') {
		cur++;
		argv[i] = cur;