diff options
Diffstat (limited to 'usr.bin/systat/cmds.c')
| -rw-r--r-- | usr.bin/systat/cmds.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/usr.bin/systat/cmds.c b/usr.bin/systat/cmds.c new file mode 100644 index 000000000000..16267f12b7d8 --- /dev/null +++ b/usr.bin/systat/cmds.c @@ -0,0 +1,192 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1980, 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + + + +#include <sys/param.h> + +#include <ctype.h> +#include <signal.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "systat.h" +#include "extern.h" + +void +command(const char *cmd) +{ + struct cmdtab *p; + char *cp, *tmpstr, *tmpstr1; + double t; + + tmpstr = tmpstr1 = strdup(cmd); + for (cp = tmpstr1; *cp && !isspace(*cp); cp++) + ; + if (*cp) + *cp++ = '\0'; + if (*tmpstr1 == '\0') + goto done; + for (; *cp && isspace(*cp); cp++) + ; + if (strcmp(tmpstr1, "quit") == 0 || strcmp(tmpstr1, "q") == 0) + die(0); + if (strcmp(tmpstr1, "load") == 0) { + load(); + goto done; + } + if (strcmp(tmpstr1, "stop") == 0) { + delay = 0; + mvaddstr(CMDLINE, 0, "Refresh disabled."); + clrtoeol(); + goto done; + } + if (strcmp(tmpstr1, "help") == 0) { + int _col, _len; + + move(CMDLINE, _col = 0); + for (p = cmdtab; p->c_name; p++) { + _len = strlen(p->c_name); + if (_col + _len > COLS) + break; + addstr(p->c_name); _col += _len; + if (_col + 1 < COLS) + addch(' '); + } + clrtoeol(); + goto done; + } + t = strtod(tmpstr1, NULL) * 1000000.0; + if (t > 0 && t < (double)UINT_MAX) + delay = (unsigned int)t; + if ((t <= 0 || t > (double)UINT_MAX) && + (strcmp(tmpstr1, "start") == 0 || + strcmp(tmpstr1, "interval") == 0)) { + if (*cp != '\0') { + t = strtod(cp, NULL) * 1000000.0; + if (t <= 0 || t >= (double)UINT_MAX) { + error("%d: bad interval.", (int)t); + goto done; + } + } + } + if (t > 0) { + delay = (unsigned int)t; + display(); + status(); + goto done; + } + p = lookup(tmpstr1); + if (p == (struct cmdtab *)-1) { + error("%s: Ambiguous command.", tmpstr1); + goto done; + } + if (p) { + if (curcmd == p) + goto done; + (*curcmd->c_close)(wnd); + curcmd->c_flags &= ~CF_INIT; + wnd = (*p->c_open)(); + if (wnd == NULL) { + error("Couldn't open new display"); + wnd = (*curcmd->c_open)(); + if (wnd == NULL) { + error("Couldn't change back to previous cmd"); + exit(1); + } + p = curcmd; + } + if ((p->c_flags & CF_INIT) == 0) { + if ((*p->c_init)()) + p->c_flags |= CF_INIT; + else + goto done; + } + curcmd = p; + labels(); + display(); + status(); + goto done; + } + if (curcmd->c_cmd == NULL || !(*curcmd->c_cmd)(tmpstr1, cp)) + error("%s: Unknown command.", tmpstr1); +done: + free(tmpstr); +} + +struct cmdtab * +lookup(const char *name) +{ + const char *p, *q; + struct cmdtab *ct, *found; + int nmatches, longest; + + longest = 0; + nmatches = 0; + found = (struct cmdtab *) 0; + for (ct = cmdtab; (p = ct->c_name); ct++) { + for (q = name; *q == *p++; q++) + if (*q == 0) /* exact match? */ + return (ct); + if (!*q) { /* the name was a prefix */ + if (q - name > longest) { + longest = q - name; + nmatches = 1; + found = ct; + } else if (q - name == longest) + nmatches++; + } + } + if (nmatches > 1) + return ((struct cmdtab *)-1); + return (found); +} + +void +status(void) +{ + + error("Showing %s, refresh every %d seconds.", + curcmd->c_name, delay / 1000000); +} + +int +prefix(const char *s1, const char *s2) +{ + + while (*s1 == *s2) { + if (*s1 == '\0') + return (1); + s1++, s2++; + } + return (*s1 == '\0'); +} |