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mateuszvis |
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/* This file is part of the SvarCOM project and is published under the terms
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* of the MIT license.
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*
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* Copyright (C) 2021 Mateusz Viste
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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mateuszvis |
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/*
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* path
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*
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* Displays or sets a search path for executable files.
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*/
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mateuszvis |
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static enum cmd_result cmd_path(struct cmd_funcparam *p) {
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mateuszvis |
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char *buff = p->BUFFER;
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mateuszvis |
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/* help screen (/?) */
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if (cmd_ishlp(p)) {
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output("Displays or sets a search path for executable files.\r\n"
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"\r\n"
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"PATH [[drive:]path[;...]]\r\n"
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"PATH ;\r\n"
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"\r\n"
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"Type PATH ; to clear all search-path settings and direct DOS to search\r\n"
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"only in the current directory.\r\n"
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"\r\n"
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"Type PATH without parameters to display the current path.\r\n");
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mateuszvis |
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return(CMD_OK);
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mateuszvis |
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}
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mateuszvis |
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/* no parameter - display current path */
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if (p->argc == 0) {
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char far *curpath = env_lookup(p->env_seg, "PATH");
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mateuszvis |
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if (curpath == NULL) {
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outputnl("No Path");
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} else {
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mateuszvis |
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unsigned short i;
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for (i = 0;; i++) {
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buff[i] = curpath[i];
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if (buff[i] == 0) break;
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}
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outputnl(buff);
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}
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mateuszvis |
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return(CMD_FAIL);
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mateuszvis |
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}
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/* more than 1 parameter */
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if (p->argc > 1) {
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outputnl("Too many parameters");
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mateuszvis |
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return(CMD_FAIL);
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mateuszvis |
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}
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/* IF HERE: THERE IS EXACTLY 1 ARGUMENT (argc == 1) */
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/* reset the PATH string (PATH ;) */
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if (imatch(p->argv[0], ";")) {
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env_dropvar(p->env_seg, "PATH");
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mateuszvis |
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return(CMD_OK);
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mateuszvis |
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}
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/* otherwise set PATH to whatever is passed on command-line */
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{
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unsigned short i;
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strcpy(buff, "PATH=");
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for (i = 0;; i++) {
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buff[i + 5] = p->argv[0][i];
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mateuszvis |
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if (buff[i + 5] == 0) break;
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mateuszvis |
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}
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env_setvar(p->env_seg, buff);
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}
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mateuszvis |
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return(CMD_OK);
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mateuszvis |
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}
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