HardenedBSD/lib/libmytinfo/gettcap.c

/*
 * gettcap.c
 *
 * By Ross Ridge
 * Public Domain
 * 92/02/01 07:30:00
 *
 */

#include "defs.h"
#include <term.h>

#include <ctype.h>

#ifdef USE_SCCS_IDS
static const char SCCSid[] = "@(#) mytinfo gettcap.c 3.2 92/02/01 public domain, By Ross Ridge";
#endif

int
_gettcap(sp, cur, path)
register char *sp;
TERMINAL *cur;
struct term_path *path; {
	static char name[MAX_NAME];
	static char entry[MAX_LINE];
	register char *dp;
	register TERMINAL *ct = cur;
	int i, pad, fract, mul = 0, ind;
	char c, flag;

	dp = entry;
	while(*sp != ':' && *sp != '\0')
		*dp++ = *sp++;
	if (ct->name_all == NULL) {
		*dp = '\0';
		if ((ct->name_all = _addstr(entry)) == NULL)
			return 1;
		while(dp > entry && *--dp != '|');
		ct->name_long = ct->name_all + (dp - entry) + 1;
	}

 	while(*sp != '\0') {
		while(*sp == ':')
			sp++;
		while(isspace(*sp))
			sp++;
		if (*sp == ':')
			continue;
		if (*sp == '\0')
			break;
		dp = name;
		while (*sp != ':' && *sp != '#' && *sp != '=' &&
		       !isspace(*sp) && *sp != '\0')
			*dp++ = *sp++;
		*dp = '\0';
#ifdef DEBUG
		printf(" %s", name);
#endif
		switch(*sp) {
		case '=':
#ifdef DEBUG
			putchar('$');
#endif
			ind = _findstrcode(name);
			if (ind != -1)
				flag = _strflags[ind];
			else
				flag = 'K';
			dp = entry;
			fract = pad = 0;
			sp++;
			if (isdigit(*sp) && flag != 'K') {
				pad = *sp++ - '0';
				while(isdigit(*sp))
					pad = pad * 10 + (*sp++ - '0');
				if (*sp == '.' && isdigit(sp[1])) {
					sp++;
					fract = (*sp++ - '0');
				}
				if (*sp == '*') {
					mul = 1;
					sp++;
				} else
					mul = 0;

			}
			while(*sp != '\0' && *sp != ':') {
				switch(*sp) {
				case '\\':
					switch(*++sp) {
					case 'e':
					case 'E': *dp++ = '\033'; break;
					case 'l': *dp++ = '\012'; break;
					case 'n': *dp++ = '\n'; break;
					case 'r': *dp++ = '\r'; break;
					case 't': *dp++ = '\t'; break;
					case 'b': *dp++ = '\b'; break;
					case 'f': *dp++ = '\f'; break;
					case 's': *dp++ = ' '; break;

					case '^':
					case '\\':
					case ',':
					case ':':
						*dp++ = *sp;
						break;

					case '0':
						if (!isdigit(*(sp + 1))) {
							*dp++ = '\200';
							break;
						}
						;/* FALLTHROUGH */
					case '1':
					case '2':
					case '3':
					case '4':
					case '5':
					case '6':
					case '7':
						c = *sp - '0';
						if (sp[1] >= '0'
						    && sp[1] <= '8')
							c = c * 8
							    + (*++sp - '0');
						if (sp[1] >= '0'
						    && sp[1] <= '8')
							c = c * 8
							    + (*++sp - '0');
						switch((char)c) {
						case 0:
							if (flag == 'K')
								*dp++ = '\200';
							else {
								*dp++ = '\\';
								*dp++ = '0';
								*dp++ = '0';
								*dp++ = '0';
							}
							break;
						case '$':
						case '\'':
						case '\\':
							if (flag != 'K')
								*dp++ = '\\';
							/* FALLTHROUGH */
						default:
							if (flag == 'G'
							    && c == '%')
								*dp++ = '\\';
							*dp++ = c;
							break;
						}
						break;
					default:
						*dp++ = '\\';
						*dp++ = *sp;
						break;
					}
					sp++;
					break;
				case '^':
					if (*++sp >= 'A' && *sp <= '_') {
						*dp++ = *sp++ - '@';
					} else if (*sp >= 'a' && *sp <= 'z') {
						*dp++ = *sp++ - 'a' + 1;
					} else if (*sp == '@') {
						if (flag == 'K')
							*dp++ = '\200';
						else {
							*dp++ = '\\';
							*dp++ = '0';
							*dp++ = '0';
							*dp++ = '0';
						}
						sp++;
					} else if (*sp == '?') {
						*dp++ = '\177';
						sp++;
					} else
						*dp++ = '^';
					break;
				case '$':
					if (flag != 'K')
						*dp++ = '\\';
					/* FALLTHROUGH */
				default:
					*dp++ = *sp++;
					break;
				}
			}
			if (pad != 0 || fract != 0) {
				if (fract == 0)
					sprintf(dp, "$<%d", pad);
				else
					sprintf(dp, "$<%d.%d", pad, fract);
				dp += strlen(dp);
				if (mul)
					*dp++ = '*';
				*dp++ = '>';
			}
			*dp++ = '\0';
			if(name[0] == 't' && name[1] == 'c' && name[2] == '\0'){
				if (_getother(entry, path, ct))
					return 1;
				break;
			}
			if (ind == -1)
				break;
			if (ct->strs[ind] != (char *) -1)
				break;
			if ((ct->strs[ind] = _addstr(entry)) == NULL)
				return 1;
			break;
		case '#':
#ifdef DEBUG
			putchar('#');
#endif
			i = atoi(++sp);
			while(*sp != '\0' && *sp++ != ':');
			ind = _findnumcode(name);
			if (ind == -1)
				break;
			if (ct->nums[ind] != -2)
				break;
			ct->nums[ind] = i;
			break;
		default:
			while(*sp != '\0' && *sp++ != ':');
			if (*(dp - 1) == '@') {
#ifdef DEBUG
				putchar('@');
#endif
				*(dp - 1) = '\0';
				ind = _findboolcode(name);
				if (ind != -1) {
#ifdef DEBUG
					putchar('!');
#endif
					if (ct->bools[ind] == -1)
						ct->bools[ind] = 0;
					break;
				}
				ind = _findnumcode(name);
				if (ind != -1) {
#ifdef DEBUG
					putchar('#');
#endif
					if (ct->nums[ind] == -2)
						ct->nums[ind] = -1;
					break;
				}
				ind = _findstrcode(name);
				if (ind != -1) {
#ifdef DEBUG
					putchar('$');
#endif
					if (ct->strs[ind] == (char *) -1)
						ct->strs[ind] = NULL;
					break;
				}
				break;
			}
#ifdef DEBUG
			putchar('!');
#endif
			ind = _findboolcode(name);
			if (ind == -1)
				break;
			if (ct->bools[ind] != -1)
				break;
			ct->bools[ind] = 1;
		}
	}
	return 0;
}