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[unix-history] / usr / src / local / local.cmd / showtc.c
#ifndef LINT
static char *sccsid="@(#)showtc.c 1.4 (Berkeley) %G%";
#endif
/*
** show termcap entries
**
** where:
** -D look for duplicate names and print termcap file
** -S sort entries before display
** -T trace (-DDEBUG only)
** -b show bare entries
** -d -D and stop
** -f following arg is FULL PATHNAME of termcap file
** -g sort on generic names
** -s don't print two char name at the front of every line
** -x expand tc= capabilities
** [ent] display specific entry. tc= will be expanded.
**
** David L. Wasley, U.C.Berkeley
** Kevin Layer: modified for 4.1c and misc changes.
** Kevin Layer: added the printing of terminal capabilities
** in `human' readable form (like that in "man 5 termcap").
*/
#include <stdio.h>
#include <sys/file.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#define NO 0
#define YES 1
#define CNULL '\0'
#define NOENTRIES 1024
#define USAGE "usage: %s [-Sxdngb] [-f termcapfile] [entry] ...\n"
struct TcName {
char name_buf[124];
long file_pos;
} tcNames[NOENTRIES];
#define NOCAPS 95
struct Caps {
char *cap;
char *desc;
} capList[NOCAPS] =
{
"ae", "End alternate character set",
"al", "Add new blank line",
"am", "Has automatic margins",
"as", "Start alternate character set",
"bc", "Backspace if not ^H",
"bs", "Can backspace with ^H",
"bt", "Back tab",
"bw", "Backspace wraps from col 0 to last col",
"CC", "Command char in prototype if settable",
"cd", "Clear to end of display",
"ce", "Clear to end of line",
"ch", "Like cm, but horizontal motion only",
"cl", "Clear screen",
"cm", "Cursor motion",
"co", "Number of columns in a line",
"cr", "Carriage return, (default ^M)",
"cs", "Change scrolling region (vt100), like cm",
"cv", "Like ch but vertical only.",
"da", "Display may be retained above",
"dB", "Number of millisec of bs delay needed",
"db", "Display may be retained below",
"dC", "Number of millisec of cr delay needed",
"dc", "Delete character",
"dF", "Number of millisec of ff delay needed",
"dl", "Delete line",
"dm", "Start Delete mode",
"dN", "Number of millisec of nl delay needed",
"do", "Down one line",
"dT", "Number of millisec of tab delay needed",
"ed", "End delete mode",
"ei", "End insert mode;give \":ei=:\" if ic",
"eo", "Can erase overstrikes with a blank",
"ff", "Hardcopy page eject (default ^L)",
"fs", "From status line sequence",
"hc", "Hardcopy terminal",
"hd", "Half-line down (forward 1/2 lf)",
"ho", "Home cursor (if no cm)",
"hs", "Has 25th status line",
"hu", "Half-line up (reverse 1/2 lf)",
"hz", "Hazeltine; can't print ~'s",
"ic", "Insert character",
"if", "Name of file containing is",
"im", "Start insert mode;give \":im=:\" if ic",
"in", "Insert mode distinguishes nulls on display",
"ip", "Insert pad after character inserted",
"is", "Initialization string",
"i2", "Alternate initialization string",
"kb", "Sent by backspace key",
"kd", "Sent down arrow key",
"ke", "Out of \"keypad transmit\" mode",
"kh", "Sent by home key",
"kl", "Sent by left arrow key",
"kn", "Number of \"other\" keys",
"ko", "Tc entries for other non-function keys",
"kr", "Sent by right arrow key",
"ks", "Put in \"keypad transmit\" mode",
"ku", "Sent by up arrow key",
"li", "Number of lines on screen or page",
"ll", "Last line, first column (if no cm)",
"ma", "Arrow key map, used by vi V2 only",
"mi", "Safe to move while in insert mode",
"ml", "Memory lock on above cursor.",
"ms", "Ok to move while in standout/underline mode",
"mu", "Memory unlock (turn off memory lock).",
"nc", "No working CR (DM2500,H2000)",
"nd", "Non-destructive space (cursor right)",
"nl", "Newline character (default \\n)",
"ns", "Is a CRT but doesn't scroll.",
"os", "Terminal overstrikes",
"pc", "Pad character (rather than null)",
"pt", "Has hardware tabs (may need to use is)",
"se", "End stand out mode",
"sf", "Scroll forwards",
"sg", "Number of blank chars left by so/se",
"so", "Begin stand out mode",
"sr", "Scroll reverse (backwards)",
"ta", "Tab (other than ^I or with padding)",
"tc", "Entry of similar terminal - must be last",
"te", "String to end programs that use cm",
"ti", "String to begin programs that use cm",
"ts", "To status line sequence",
"uc", "Underscore one char and move past it",
"ue", "End underscore mode",
"ug", "Number of blank chars left by us or ue",
"ul", "Underlines, though no overstrike",
"up", "Upline (cursor up)",
"us", "Start underscore mode",
"vb", "Visible bell (may not move cursor)",
"ve", "Sequence to end open/visual mode",
"vs", "Sequence to start open/visual mode",
"xb", "Beehive (f1=escape, f2=ctrl C)",
"xn", "A newline is ignored after a wrap (Concept)",
"xr", "Return acts like ce \\r \\n (Delta Data)",
"xs", "Standout not erased by writing over it (HP 264?)",
"xt", "Destructive tabs, magic so char (Teleray 1061)"
};
#ifdef DEBUG
int Dflag = NO;
#endif
int xflag = NO;
int Sflag = YES;
int sflag = NO;
int dflag = NO;
int nflag = NO;
int gflag = NO;
int bflag = NO;
int tc_loopc; /* loop counter */
char *tcfile; /* termcap database pathname */
char tcbuf[1024]; /* buffer for termcap description */
char *lastchar();
int name_cmp();
int ent_cmp();
struct TcName *find_name();
char *getenv();
char *ctime();
char *strncpy();
long ftell();
main(argc, argv, envp)
int argc;
char **argv;
char **envp;
{
char *av;
struct TcName *tn;
register char *bp;
long pos;
int n;
struct stat st;
char envbuf[256];
FILE *tcfp;
if ((bp = getenv("TERMCAP")) && *bp == '/')
tcfile = bp;
else
tcfile = "/etc/termcap";
while (--argc > 0)
{
if (*(av = *++argv) == '-')
{
while (*++av)
{
switch (*av)
{
/* use alternate termcap file */
case 'f':
if (argc-- <= 0)
{
fprintf(stderr,
"-f needs a filename\n");
exit(1);
}
tcfile = *++argv;
break;
/* only check for dup names */
case 'd':
nflag = YES;
/* fall thru */
/* look for duplicated names */
case 'D':
dflag = YES;
continue;
/* strip the two name off */
case 's':
sflag = YES;
continue;
/* sort the name array */
case 'S':
Sflag = NO;
continue;
#ifdef DEBUG
case 'T':
Dflag = YES;
continue;
#endif
/* sort on generic names */
case 'g':
gflag = YES;
continue;
/* expand entries in 'full mode' */
case 'x':
xflag = YES;
continue;
/* show bare entry */
case 'b':
bflag = YES;
continue;
default:
fprintf(stderr, "showtc: unknown flag: -%c\n", *av);
fprintf(stderr, USAGE, argv[0]);
exit(1);
}
}
}
else
break;
}
/*
* insert the specified TERMCAP file into the environment
*/
(void) sprintf(envbuf, "TERMCAP=%s", tcfile);
while (*envp)
{
if (strncmp(*envp, "TERMCAP=", 8) == 0)
{
*envp = envbuf;
break;
}
envp++;
}
if (! *envp)
*envp = envbuf; /* this may be dangerous */
/*
** if user specified type(s), do only those
*/
if (argc > 0)
{
/*
** look for the users specified term types
*/
while (argc > 0)
{
switch (n = tgetent(tcbuf, *argv))
{
case 1:
if (bflag)
(void) prnt_raw(tcbuf);
else
(void) prnt_ent(tcbuf);
break;
case 0:
fprintf(stderr,
"showtc: bad entry: %s\n", *argv);
break;
case -1:
fputs("showtc: ", stderr);
perror(tcfile);
exit(1);
default:
fprintf(stderr, "bad return from tgetent: %d\n", n);
exit(1);
}
argc--;
argv++;
}
exit(0);
}
if (bflag)
{
fprintf(stderr, "showtc: -b flag with no entries makes no sense.\n");
exit(1);
}
/*
** if no type was specified, do the whole file
*/
if ((tcfp = fopen(tcfile, "r")) == NULL)
{
perror(tcfile);
exit(1);
}
/*
** identify database, for the record
*/
if (stat(tcfile, &st))
{
perror(tcfile);
exit(1);
}
printf("File: %s, last modified: %s\n", tcfile, ctime(&st.st_mtime));
/*
** build termcap entry table
*/
tn = tcNames;
pos = ftell(tcfp);
bp = tcbuf;
while (fgets(bp, sizeof (tcbuf), tcfp) != NULL)
{
if (tcbuf[0] == '#')
{
pos = ftell(tcfp);
bp = tcbuf;
continue;
}
tn->file_pos = pos;
/*
** get full entry
*/
while (*(bp = lastchar(bp)) == '\\' && fgets(bp, (sizeof tcbuf) - (bp - tcbuf), tcfp))
;
/*
** save the names
*/
for (bp = tcbuf; *bp && *bp != ':'; bp++)
;
*bp = '\0';
(void) strncpy(tn->name_buf, tcbuf,
sizeof tcNames[0].name_buf);
pos = ftell(tcfp);
bp = tcbuf;
tn++;
}
tn->file_pos = -1;
/*
** Look for duplicate names
*/
if (dflag)
check_dup();
if (nflag)
exit(0);
#ifdef DEBUG
if (Dflag)
{
for (tn = tcNames; tn->file_pos >= 0; tn++)
{
printf("Entry #%d:\n\t%s\n\tfile_pos = %ld\n",
tn - tcNames, tn->name_buf, tn->file_pos);
}
exit(0);
}
#endif
/*
** Order the list
*/
if (Sflag)
qsort((char *)tcNames, tn - tcNames,
sizeof (struct TcName), name_cmp);
/*
** List termcap entry for each name in table
*/
for (tn = tcNames; tn->file_pos >= 0; tn++)
{
tc_loopc = 0;
/*** working toward this ...
(void) prnt_ent(tn);
***/
(void) fseek(tcfp, tn->file_pos, 0);
bp = tcbuf;
while (fgets(bp, (sizeof tcbuf) - (bp - tcbuf), tcfp)
&& *(bp = lastchar(bp)) == '\\')
;
(void) prnt_ent(tcbuf);
}
}
char *
lastchar(b)
char *b;
{
register char *p;
p = b + strlen(b) - 1;
while (*p == '\n' || *p == ' ')
p--;
return(p);
}
name_cmp(a, b)
char *a, *b;
{
if (gflag) /* sort on generic names */
{
a += 3;
b += 3;
while (*a && *b && *a != '|' && *a == *b)
{
a++;
b++;
}
if (*a == '|' || *a == CNULL)
return((*b == '|' || *b == CNULL)? 0:-1);
if (*b == '|' || *b == CNULL)
return(1);
return(*a - *b);
}
return(strncmp(a, b, 2));
}
prnt_ent(buf)
register char *buf;
{
register char *name;
char *getdesc();
char *caps[256];
register char **cp;
register char **tp;
char tname[3];
cp = caps;
name = buf;
tname[3] = '\0';
while (*buf)
{
switch (*buf)
{
case ':':
*buf++ = '\0';
while (*buf && !isalnum(*buf))
buf++;
if (*buf)
{
/*
* ignore duplicate cap entries
*/
for (tp = caps; tp < cp; tp++)
if (strncmp(buf, *tp, 2) == 0)
goto skip;
*cp++ = buf;
skip:
/*
* does user want tc= expanded?
*/
if (xflag && strncmp(buf, "tc=", 3) == 0)
{
/*
* find end of tc=
*/
while (*buf != ':')
buf++;
*buf = '\0';
/*
* save term name
*/
tname[0] = name[0];
tname[1] = name[1];
printf("%s: expanding %s\n",
tname, cp[-1]);
/*
* let tgetent do the work
*/
tgetent(tcbuf, tname);
prnt_ent(tcbuf);
return;
}
}
continue;
case '|':
*buf++ = ',';
continue;
default:
buf++;
}
}
*cp = CNULL; /* was (char *)0 */
if (Sflag)
qsort((char *) caps, cp - caps, sizeof (char *), ent_cmp);
printf("%s\n", name);
for (cp = caps; *cp; cp++)
if (sflag)
printf("%-45s %s\n", getdesc(*cp), *cp);
else
{
printf("%2.2s %-45s %s\n", name, getdesc(*cp), *cp);
}
(void) putchar('\n');
}
prnt_raw(buf)
char *buf;
{
register char *b;
register int len;
register int n;
char *index();
len = 0;
b = buf;
while (*b)
{
if ((n = index(b, ':') - b + 1) <= 0)
n = strlen(b);
if (len == 0) /* first part */
{
printf("%.*s\\\n\t:", n, b);
len = 9 - n;
}
else
{
if ((len + n) >= 75)
{
printf("\\\n\t:");
len = 9;
}
printf("%.*s", n, b);
}
len += n;
b += n;
while (*b && index(" \t:\n", *b))
b++;
}
if (b[-1] != ':')
(void) putchar(':');
(void) putchar('\n');
}
ent_cmp(a, b)
char **a, **b;
{
return(strncmp(*a, *b, 2));
}
check_dup()
{
/*
** Look for duplicated names
*/
register char *p;
register char *q;
register struct TcName *tn;
register struct TcName *tm;
tn = tcNames;
while (tn->file_pos >= 0)
{
p = q = tn->name_buf;
while (*q)
{
while (*p && *p != '|')
p++;
if (p != q && (tm = find_name(q, tn + 1, p - q)))
{
fputs("Duplicate name: ", stdout);
while (q != p)
(void) putchar(*q++);
(void) putchar('\n');
puts(tn->name_buf);
puts(tm->name_buf);
puts("---\n");
}
if (*p == '|')
p++;
q = p;
}
tn++;
}
}
struct TcName *
find_name(name, tn, len)
register char *name;
register struct TcName *tn;
register int len;
{
/*
** find name of length len in tcname structure buffers.
*/
register char *p;
register char *buf;
register int n;
while (tn->file_pos >= 0)
{
buf = tn->name_buf;
while (*buf)
{
p = name;
n = len;
if (*buf == '|')
buf++;
while (*buf && *buf != '|')
{
if (*p != *buf)
{
while (*buf && *buf != '|')
buf++;
break;
}
if (--n <= 0)
{
buf++;
if (*buf == '|' || *buf == '\0')
return(tn);
while (*buf && *buf != '|')
buf++;
break;
}
buf++;
p++;
}
}
tn++;
}
return((struct TcName *)0);
}
char *
getdesc(key)
char *key;
{
register int i;
for (i = 0; i <= NOCAPS; i++)
if (strncmp(key, capList[i].cap, 2) == 0)
return (capList[i].desc);
return("");
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.