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|
/* vi:set ts=8 sts=4 sw=4: */
/*
* The following software is (C) 1984 Peter da Silva, the Mad Australian, in
* the public domain. It may be re-distributed for any purpose with the
* inclusion of this notice.
*/
/* Modified by Bram Moolenaar for use with VIM - Vi Improved. */
/* A few bugs removed by Olaf 'Rhialto' Seibert. */
/* TERMLIB: Terminal independant database. */
#include "vim.h"
#include "termlib.pro"
#if !defined(AMIGA) && !defined(VMS) && !defined(MACOS) && !defined(RISCOS)
# include <sgtty.h>
#endif
static int getent __ARGS((char *, char *, FILE *, int));
static int nextent __ARGS((char *, FILE *, int));
static int _match __ARGS((char *, char *));
static char *_addfmt __ARGS((char *, char *, int));
static char *_find __ARGS((char *, char *));
/*
* Global variables for termlib
*/
char *tent; /* Pointer to terminal entry, set by tgetent */
char PC = 0; /* Pad character, default NULL */
char *UP = 0, *BC = 0; /* Pointers to UP and BC strings from database */
short ospeed; /* Baud rate (1-16, 1=300, 16=19200), as in stty */
/*
* Module: tgetent
*
* Purpose: Get termcap entry for <term> into buffer at <tbuf>.
*
* Calling conventions: char tbuf[TBUFSZ+], term=canonical name for terminal.
*
* Returned values: 1 = success, -1 = can't open file,
* 0 = can't find terminal.
*
* Notes:
* - Should probably supply static buffer.
* - Uses environment variables "TERM" and "TERMCAP". If TERM = term (that is,
* if the argument matches the environment) then it looks at TERMCAP.
* - If TERMCAP begins with a slash, then it assumes this is the file to
* search rather than /etc/termcap.
* - If TERMCAP does not begin with a slash, and it matches TERM, then this is
* used as the entry.
* - This could be simplified considerably for non-UNIX systems.
*/
#ifndef TERMCAPFILE
# ifdef AMIGA
# define TERMCAPFILE "s:termcap"
# else
# ifdef VMS
# define TERMCAPFILE "VIMRUNTIME:termcap"
# else
# define TERMCAPFILE "/etc/termcap"
# endif
# endif
#endif
int
tgetent(tbuf, term)
char *tbuf; /* Buffer to hold termcap entry, TBUFSZ bytes max */
char *term; /* Name of terminal */
{
char tcbuf[32]; /* Temp buffer to handle */
char *tcptr = tcbuf; /* extended entries */
char *tcap = TERMCAPFILE; /* Default termcap file */
char *tmp;
FILE *termcap;
int retval = 0;
int len;
if ((tmp = (char *)mch_getenv((char_u *)"TERMCAP")) != NULL)
{
if (*tmp == '/') /* TERMCAP = name of termcap file */
{
tcap = tmp ;
#if defined(AMIGA)
/* Convert /usr/share/lib/termcap to usr:share/lib/termcap */
tcap++;
tmp = strchr(tcap, '/');
if (tmp)
*tmp = ':';
#endif
}
else /* TERMCAP = termcap entry itself */
{
int tlen = strlen(term);
while (*tmp && *tmp != ':') /* Check if TERM matches */
{
char *nexttmp;
while (*tmp == '|')
tmp++;
nexttmp = _find(tmp, ":|"); /* Rhialto */
if (tmp+tlen == nexttmp && _match(tmp, term) == tlen)
{
strcpy(tbuf, tmp);
tent = tbuf;
return 1;
}
else
tmp = nexttmp;
}
}
}
if (!(termcap = mch_fopen(tcap, "r")))
{
strcpy(tbuf, tcap);
return -1;
}
len = 0;
while (getent(tbuf + len, term, termcap, TBUFSZ - len))
{
tcptr = tcbuf; /* Rhialto */
if ((term = tgetstr("tc", &tcptr))) /* extended entry */
{
rewind(termcap);
len = strlen(tbuf);
}
else
{
retval = 1;
tent = tbuf; /* reset it back to the beginning */
break;
}
}
fclose(termcap);
return retval;
}
static int
getent(tbuf, term, termcap, buflen)
char *tbuf, *term;
FILE *termcap;
int buflen;
{
char *tptr;
int tlen = strlen(term);
while (nextent(tbuf, termcap, buflen)) /* For each possible entry */
{
tptr = tbuf;
while (*tptr && *tptr != ':') /* : terminates name field */
{
char *nexttptr;
while (*tptr == '|') /* | seperates names */
tptr++;
nexttptr = _find(tptr, ":|"); /* Rhialto */
if (tptr + tlen == nexttptr &&
_match(tptr, term) == tlen) /* FOUND! */
{
tent = tbuf;
return 1;
}
else /* Look for next name */
tptr = nexttptr;
}
}
return 0;
}
static int
nextent(tbuf, termcap, buflen) /* Read 1 entry from TERMCAP file */
char *tbuf;
FILE *termcap;
int buflen;
{
char *lbuf = tbuf; /* lbuf=line buffer */
/* read lines straight into buffer */
while (lbuf < tbuf+buflen && /* There's room and */
fgets(lbuf, (int)(tbuf+buflen-lbuf), termcap)) /* another line */
{
int llen = strlen(lbuf);
if (*lbuf == '#') /* eat comments */
continue;
if (lbuf[-1] == ':' && /* and whitespace */
lbuf[0] == '\t' &&
lbuf[1] == ':')
{
strcpy(lbuf, lbuf+2);
llen -= 2;
}
if (lbuf[llen-2] == '\\') /* and continuations */
lbuf += llen-2;
else
{
lbuf[llen-1]=0; /* no continuation, return */
return 1;
}
}
return 0; /* ran into end of file */
}
/*
* Module: tgetflag
*
* Purpose: returns flag true or false as to the existence of a given entry.
* used with 'bs', 'am', etc...
*
* Calling conventions: id is the 2 character capability id.
*
* Returned values: 1 for success, 0 for failure.
*/
int
tgetflag(id)
char *id;
{
char buf[256], *ptr = buf;
return tgetstr(id, &ptr) ? 1 : 0;
}
/*
* Module: tgetnum
*
* Purpose: get numeric value such as 'li' or 'co' from termcap.
*
* Calling conventions: id = 2 character id.
*
* Returned values: -1 for failure, else numerical value.
*/
int
tgetnum(id)
char *id;
{
char *ptr, buf[256];
ptr = buf;
if (tgetstr(id, &ptr))
return atoi(buf);
else
return 0;
}
/*
* Module: tgetstr
*
* Purpose: get terminal capability string from database.
*
* Calling conventions: id is the two character capability id.
* (*buf) points into a hold buffer for the
* id. the capability is copied into the buffer
* and (*buf) is advanced to point to the next
* free byte in the buffer.
*
* Returned values: 0 = no such entry, otherwise returns original
* (*buf) (now a pointer to the string).
*
* Notes
* It also decodes certain escape sequences in the buffer.
* they should be obvious from the code:
* \E = escape.
* \n, \r, \t, \f, \b match the 'c' escapes.
* ^x matches control-x (^@...^_).
* \nnn matches nnn octal.
* \x, where x is anything else, matches x. I differ
* from the standard library here, in that I allow ^: to match
* :.
*
*/
char *
tgetstr(id
|