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Diffstat (limited to 'contrib/tcsh/vms.termcap.c')
-rw-r--r-- | contrib/tcsh/vms.termcap.c | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/contrib/tcsh/vms.termcap.c b/contrib/tcsh/vms.termcap.c new file mode 100644 index 0000000..d48802e --- /dev/null +++ b/contrib/tcsh/vms.termcap.c @@ -0,0 +1,337 @@ +/* $Header: /src/pub/tcsh/vms.termcap.c,v 1.5 1997/10/02 16:36:36 christos Exp $ */ +/* + * termcap.c 1.1 20/7/87 agc Joypace Ltd + * + * Copyright Joypace Ltd, London, UK, 1987. All rights reserved. + * This file may be freely distributed provided that this notice + * remains attached. + * + * A public domain implementation of the termcap(3) routines. + */ +#include "sh.h" +RCSID("$Id: vms.termcap.c,v 1.5 1997/10/02 16:36:36 christos Exp $") +#if defined(_VMS_POSIX) || defined(_OSD_POSIX) +/* efth 1988-Apr-29 + + - Correct when TERM != name and TERMCAP is defined [tgetent] + - Correct the comparison for the terminal name [tgetent] + - Correct the value of ^x escapes [tgetstr] + - Added %r to reverse row/column [tgoto] + + Paul Gillingwater <paul@actrix.gen.nz> July 1992 + - Modified to allow terminal aliases in termcap file + - Uses TERMCAP environment variable for file only +*/ + +#include <stdio.h> +#include <string.h> + +#define CAPABLEN 2 + +#define ISSPACE(c) ((c) == ' ' || (c) == '\t' || (c) == '\r' || (c) == '\n') +#define ISDIGIT(x) ((x) >= '0' && (x) <= '9') + +char *capab; /* the capability itself */ + +extern char *getenv(); /* new, improved getenv */ +extern FILE *fopen(); /* old fopen */ + +/* + * tgetent - get the termcap entry for terminal name, and put it + * in bp (which must be an array of 1024 chars). Returns 1 if + * termcap entry found, 0 if not found, and -1 if file not found. + */ + +int +tgetent(bp, name) +char *bp; +char *name; +{ + FILE *fp; + char *termfile; + char *cp, + *ptr, /* temporary pointer */ + tmp[1024]; /* buffer for terminal name */ + short len = strlen(name); + + capab = bp; + + /* Use TERMCAP to override default. */ + + termfile = getenv("TERMCAP"); + if (termfile == NULL ) termfile = "/etc/termcap"; + + if ((fp = fopen(termfile, "r")) == (FILE *) NULL) { + fprintf(stderr, CGETS(31, 1, + "Can't open TERMCAP: [%s]\n"), termfile); + fprintf(stderr, CGETS(31, 2, "Can't open %s.\n"), termfile); + sleep(1); + return(-1); + } + + while (fgets(bp, 1024, fp) != NULL) { + /* Any line starting with # or NL is skipped as a comment */ + if ((*bp == '#') || (*bp == '\n')) continue; + + /* Look for lines which end with two backslashes, + and then append the next line. */ + while (*(cp = &bp[strlen(bp) - 2]) == '\\') + fgets(cp, 1024, fp); + + /* Skip over any spaces or tabs */ + for (++cp ; ISSPACE(*cp) ; cp++); + + /* Make sure "name" matches exactly (efth) */ + +/* Here we might want to look at any aliases as well. We'll use +sscanf to look at aliases. These are delimited by '|'. */ + + sscanf(bp,"%[^|]",tmp); + if (strncmp(name, tmp, len) == 0) { + fclose(fp); +#ifdef DEBUG + fprintf(stderr, CGETS(31, 3, "Found %s in %s.\n"), name, termfile); + sleep(1); +#endif /* DEBUG */ + return(1); + } + ptr = bp; + while ((ptr = strchr(ptr,'|')) != NULL) { + ptr++; + if (strchr(ptr,'|') == NULL) break; + sscanf(ptr,"%[^|]",tmp); + if (strncmp(name, tmp, len) == 0) { + fclose(fp); +#ifdef DEBUG + fprintf(stderr,CGETS(31, 3, "Found %s in %s.\n"), name, termfile); + sleep(1); +#endif /* DEBUG */ + return(1); + } + } + } + /* If we get here, then we haven't found a match. */ + fclose(fp); +#ifdef DEBUG + fprintf(stderr,CGETS(31, 4, "No match found for %s in file %s\n"), + name, termfile); + sleep(1); +#endif /* DEBUG */ + return(0); + +} + +/* + * tgetnum - get the numeric terminal capability corresponding + * to id. Returns the value, -1 if invalid. + */ +int +tgetnum(id) +char *id; +{ + char *cp; + int ret; + + if ((cp = capab) == NULL || id == NULL) + return(-1); + while (*++cp != ':') + ; + for (++cp ; *cp ; cp++) { + while (ISSPACE(*cp)) + cp++; + if (strncmp(cp, id, CAPABLEN) == 0) { + while (*cp && *cp != ':' && *cp != '#') + cp++; + if (*cp != '#') + return(-1); + for (ret = 0, cp++ ; *cp && ISDIGIT(*cp) ; cp++) + ret = ret * 10 + *cp - '0'; + return(ret); + } + while (*cp && *cp != ':') + cp++; + } + return(-1); +} + +/* + * tgetflag - get the boolean flag corresponding to id. Returns -1 + * if invalid, 0 if the flag is not in termcap entry, or 1 if it is + * present. + */ +int +tgetflag(id) +char *id; +{ + char *cp; + + if ((cp = capab) == NULL || id == NULL) + return(-1); + while (*++cp != ':') + ; + for (++cp ; *cp ; cp++) { + while (ISSPACE(*cp)) + cp++; + if (strncmp(cp, id, CAPABLEN) == 0) + return(1); + while (*cp && *cp != ':') + cp++; + } + return(0); +} + +/* + * tgetstr - get the string capability corresponding to id and place + * it in area (advancing area at same time). Expand escape sequences + * etc. Returns the string, or NULL if it can't do it. + */ +char * +tgetstr(id, area) +char *id; +char **area; +{ + char *cp; + char *ret; + int i; + + if ((cp = capab) == NULL || id == NULL) + return(NULL); + while (*++cp != ':') + ; + for (++cp ; *cp ; cp++) { + while (ISSPACE(*cp)) + cp++; + if (strncmp(cp, id, CAPABLEN) == 0) { + while (*cp && *cp != ':' && *cp != '=') + cp++; + if (*cp != '=') + return(NULL); + for (ret = *area, cp++; *cp && *cp != ':' ; + (*area)++, cp++) + switch(*cp) { + case '^' : + **area = *++cp - '@'; /* fix (efth)*/ + break; + case '\\' : + switch(*++cp) { + case 'E' : + **area = CTL_ESC('\033'); + break; + case 'n' : + **area = '\n'; + break; + case 'r' : + **area = '\r'; + break; + case 't' : + **area = '\t'; + break; + case 'b' : + **area = '\b'; + break; + case 'f' : + **area = '\f'; + break; + case '0' : + case '1' : + case '2' : + case '3' : + for (i=0 ; *cp && ISDIGIT(*cp) ; + cp++) + i = i * 8 + *cp - '0'; + **area = i; + cp--; + break; + case '^' : + case '\\' : + **area = *cp; + break; + } + break; + default : + **area = *cp; + } + *(*area)++ = '\0'; + return(ret); + } + while (*cp && *cp != ':') + cp++; + } + return(NULL); +} + +/* + * tgoto - given the cursor motion string cm, make up the string + * for the cursor to go to (destcol, destline), and return the string. + * Returns "OOPS" if something's gone wrong, or the string otherwise. + */ +char * +tgoto(cm, destcol, destline) +char *cm; +int destcol; +int destline; +{ + register char *rp; + static char ret[24]; + int incr = 0; + int argno = 0, numval; + + for (rp = ret ; *cm ; cm++) { + switch(*cm) { + case '%' : + switch(*++cm) { + case '+' : + numval = (argno == 0 ? destline : destcol); + argno = 1 - argno; + *rp++ = numval + incr + *++cm; + break; + + case '%' : + *rp++ = '%'; + break; + + case 'i' : + incr = 1; + break; + + case 'd' : + numval = (argno == 0 ? destline : destcol); + numval += incr; + argno = 1 - argno; + *rp++ = '0' + (numval/10); + *rp++ = '0' + (numval%10); + break; + + case 'r' : + argno = 1; + break; + } + + break; + default : + *rp++ = *cm; + } + } + *rp = '\0'; + return(ret); +} + +/* + * tputs - put the string cp out onto the terminal, using the function + * outc. This should do padding for the terminal, but I can't find a + * terminal that needs padding at the moment... + */ +int +tputs(cp, affcnt, outc) +register char *cp; +int affcnt; +int (*outc)(); +{ + if (cp == NULL) + return(1); + /* do any padding interpretation - left null for MINIX just now */ + while (*cp) + (*outc)(*cp++); + return(1); +} +#endif /* _VMS_POSIX */ |