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Diffstat (limited to 'usr.bin/tset/map.c')
| -rw-r--r-- | usr.bin/tset/map.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/usr.bin/tset/map.c b/usr.bin/tset/map.c new file mode 100644 index 0000000..56cb725 --- /dev/null +++ b/usr.bin/tset/map.c @@ -0,0 +1,263 @@ +/*- + * Copyright (c) 1991, 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + */ + +#ifndef lint +static char sccsid[] = "@(#)map.c 8.1 (Berkeley) 6/9/93"; +#endif /* not lint */ + +#include <sys/types.h> +#include <termios.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include "extern.h" + +int baudrate __P((char *)); + +/* Baud rate conditionals for mapping. */ +#define GT 0x01 +#define EQ 0x02 +#define LT 0x04 +#define NOT 0x08 +#define GE (GT | EQ) +#define LE (LT | EQ) + +typedef struct map { + struct map *next; /* Linked list of maps. */ + char *porttype; /* Port type, or "" for any. */ + char *type; /* Terminal type to select. */ + int conditional; /* Baud rate conditionals bitmask. */ + int speed; /* Baud rate to compare against. */ +} MAP; + +MAP *cur, *maplist; + +/* + * Syntax for -m: + * [port-type][test baudrate]:terminal-type + * The baud rate tests are: >, <, @, =, ! + */ +void +add_mapping(port, arg) + char *port, *arg; +{ + MAP *mapp; + char *copy, *p, *termp; + + copy = strdup(arg); + mapp = malloc((u_int)sizeof(MAP)); + if (copy == NULL || mapp == NULL) + err("%s", strerror(errno)); + mapp->next = NULL; + if (maplist == NULL) + cur = maplist = mapp; + else { + cur->next = mapp; + cur = mapp; + } + + mapp->porttype = arg; + mapp->conditional = 0; + + arg = strpbrk(arg, "><@=!:"); + + if (arg == NULL) { /* [?]term */ + mapp->type = mapp->porttype; + mapp->porttype = NULL; + goto done; + } + + if (arg == mapp->porttype) /* [><@=! baud]:term */ + termp = mapp->porttype = NULL; + else + termp = arg; + + for (;; ++arg) /* Optional conditionals. */ + switch(*arg) { + case '<': + if (mapp->conditional & GT) + goto badmopt; + mapp->conditional |= LT; + break; + case '>': + if (mapp->conditional & LT) + goto badmopt; + mapp->conditional |= GT; + break; + case '@': + case '=': /* Not documented. */ + mapp->conditional |= EQ; + break; + case '!': + mapp->conditional |= NOT; + break; + default: + goto next; + } + +next: if (*arg == ':') { + if (mapp->conditional) + goto badmopt; + ++arg; + } else { /* Optional baudrate. */ + arg = index(p = arg, ':'); + if (arg == NULL) + goto badmopt; + *arg++ = '\0'; + mapp->speed = baudrate(p); + } + + if (*arg == NULL) /* Non-optional type. */ + goto badmopt; + + mapp->type = arg; + + /* Terminate porttype, if specified. */ + if (termp != NULL) + *termp = '\0'; + + /* If a NOT conditional, reverse the test. */ + if (mapp->conditional & NOT) + mapp->conditional = ~mapp->conditional & (EQ | GT | LT); + + /* If user specified a port with an option flag, set it. */ +done: if (port) { + if (mapp->porttype) +badmopt: err("illegal -m option format: %s", copy); + mapp->porttype = port; + } + +#ifdef MAPDEBUG + (void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY"); + (void)printf("type: %s\n", mapp->type); + (void)printf("conditional: "); + p = ""; + if (mapp->conditional & GT) { + (void)printf("GT"); + p = "/"; + } + if (mapp->conditional & EQ) { + (void)printf("%sEQ", p); + p = "/"; + } + if (mapp->conditional & LT) + (void)printf("%sLT", p); + (void)printf("\nspeed: %d\n", mapp->speed); +#endif +} + +/* + * Return the type of terminal to use for a port of type 'type', as specified + * by the first applicable mapping in 'map'. If no mappings apply, return + * 'type'. + */ +char * +mapped(type) + char *type; +{ + MAP *mapp; + int match; + + for (mapp = maplist; mapp; mapp = mapp->next) + if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) { + switch (mapp->conditional) { + case 0: /* No test specified. */ + match = 1; + break; + case EQ: + match = (ospeed == mapp->speed); + break; + case GE: + match = (ospeed >= mapp->speed); + break; + case GT: + match = (ospeed > mapp->speed); + break; + case LE: + match = (ospeed <= mapp->speed); + break; + case LT: + match = (ospeed < mapp->speed); + break; + } + if (match) + return (mapp->type); + } + /* No match found; return given type. */ + return (type); +} + +typedef struct speeds { + char *string; + int speed; +} SPEEDS; + +SPEEDS speeds[] = { + "0", B0, + "50", B50, + "75", B75, + "110", B110, + "134", B134, + "134.5", B134, + "150", B150, + "200", B200, + "300", B300, + "600", B600, + "1200", B1200, + "1800", B1800, + "2400", B2400, + "4800", B4800, + "9600", B9600, + "19200", B19200, + "38400", B38400, + "exta", B19200, + "extb", B38400, + NULL +}; + +int +baudrate(rate) + char *rate; +{ + SPEEDS *sp; + + /* The baudrate number can be preceded by a 'B', which is ignored. */ + if (*rate == 'B') + ++rate; + + for (sp = speeds; sp->string; ++sp) + if (!strcasecmp(rate, sp->string)) + return (sp->speed); + err("unknown baud rate %s", rate); + /* NOTREACHED */ +} |
