genlib.c

linux下的BBS

/* -*-c++-*- */


/***********************************************************
Copyright 1990, by Alfalfa Software Incorporated, Cambridge, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that Alfalfa's name not be used in
advertising or publicity pertaining to distribution of the software
without specific, written prior permission.

ALPHALPHA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
ALPHALPHA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

If you make any modifications, bugfixes or other changes to this software
we'd appreciate it if you could send a copy to us so we can keep things
up-to-date.  Many thanks.
				Kee Hinckley
				Alfalfa Software, Inc.
				267 Allston St., #3
				Cambridge, MA 02139  USA
				[e-mail]

$FreeBSD: src/usr.bin/gencat/genlib.c,v 1.8.6.1 2000/07/15 17:19:28 ache Exp $

******************************************************************/

/* Edit History

02/25/91   5 nazgul	Added flag for MS byteorder
01/14/91   4 nazgul	Off by one on number specified entries
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef SYSV
#define L_SET SEEK_SET
#define L_INCR SEEK_CUR
#include <memory.h>
static int bcopy(src, dst, length)
char *src, *dst;
int length;
{
    memcpy(dst, src, length);
}
static int bzero(b, length)
char *b;
int length;
{
    memset(b, '\0', length);
}
#endif
#include <sys/file.h>
#include <ctype.h>
#include <err.h>
#include "msgcat.h"
#include "gencat.h"

static char *curline = NULL;
static long lineno = 0;

static void warning(cptr, msg)
char *cptr;
char *msg;
{
    warnx("%s on line %ld\n%s", msg, lineno, curline);
    if (cptr) {
	char	*tptr;
	for (tptr = curline; tptr < cptr; ++tptr) putc(' ', stderr);
	fprintf(stderr, "^\n");
    }
}

static void error(cptr, msg)
char *cptr;
char *msg;
{
    warning(cptr, msg);
    exit(1);
}

static void corrupt() {
    error(NULL, "corrupt message catalog");
}
static void nomem() {
    error(NULL, "out of memory");
}

static char *getline(fd)
int fd;
{
    static long	curlen = BUFSIZ;
    static char	buf[BUFSIZ], *bptr = buf, *bend = buf;
    char	*cptr, *cend;
    long	buflen;

    if (!curline) {
	curline = (char *) malloc(curlen);
	if (!curline) nomem();
    }
    ++lineno;

    cptr = curline;
    cend = curline + curlen;
    while (True) {
	for (; bptr < bend && cptr < cend; ++cptr, ++bptr) {
	    if (*bptr == '\n') {
		*cptr = '\0';
		++bptr;
		return(curline);
	    } else *cptr = *bptr;
	}
	if (bptr == bend) {
	    buflen = read(fd, buf, BUFSIZ);
	    if (buflen <= 0) {
		if (cptr > curline) {
		    *cptr = '\0';
		    return(curline);
		}
		return(NULL);
	    }
	    bend = buf + buflen;
	    bptr = buf;
	}
	if (cptr == cend) {
	    cptr = curline = (char *) realloc(curline, curlen *= 2);
	    cend = curline + curlen;
	}
    }
}


static char *token(cptr)
char *cptr;
{
    static char	tok[MAXTOKEN+1];
    char	*tptr = tok;

    while (*cptr && isspace((unsigned char)*cptr)) ++cptr;
    while (*cptr && !isspace((unsigned char)*cptr)) *tptr++ = *cptr++;
    *tptr = '\0';
    return(tok);
}
static char *wskip(cptr)
char *cptr;
{
    if (!*cptr || !isspace((unsigned char)*cptr)) {
	warning(cptr, "expected a space");
	return(cptr);
    }
    while (*cptr && isspace((unsigned char)*cptr)) ++cptr;
    return(cptr);
}
static char *cskip(cptr)
char *cptr;
{
    if (!*cptr || isspace((unsigned char)*cptr)) {
	warning(cptr, "wasn't expecting a space");
	return(cptr);
    }
    while (*cptr && !isspace((unsigned char)*cptr)) ++cptr;
    return(cptr);
}

static char *getmsg(fd, cptr, quote)
int fd;
char *cptr;
char quote;
{
    static char	*msg = NULL;
    static long	msglen = 0;
    long	clen, i;
    char	*tptr;

    int		needq;

    if (quote && *cptr == quote) {
	needq = True;
	++cptr;
    } else needq = False;

    clen = strlen(cptr) + 1;
    if (clen > msglen) {
	if (msglen) msg = (char *) realloc(msg, clen);
	else msg = (char *) malloc(clen);
	msglen = clen;
    }
    tptr = msg;

    while (*cptr) {
	if (quote && *cptr == quote) {
	    char	*tmp;
	    tmp = cptr+1;
	    if (*tmp && (!isspace((unsigned char)*tmp) || *wskip(tmp))) {
		warning(cptr, "unexpected quote character, ignoreing");
		*tptr++ = *cptr++;
	    } else {
		*cptr = '\0';
	    }
	} else if (*cptr == '\\') {
	    ++cptr;
	    switch (*cptr) {
	      case '\0':
		cptr = getline(fd);
		if (!cptr) error(NULL, "premature end of file");
		msglen += strlen(cptr);
		i = tptr - msg;
		msg = (char *) realloc(msg, msglen);
		tptr = msg + i;
		break;
	      case 'n':
		*tptr++ = '\n';
		++cptr;
		break;
	      case 't':
		*tptr++ = '\t';
		++cptr;
		break;
	      case 'v':
		*tptr++ = '\v';
		++cptr;
		break;
	      case 'b':
		*tptr++ = '\b';
		++cptr;
		break;
	      case 'r':
		*tptr++ = '\r';
		++cptr;
		break;
	      case 'f':
		*tptr++ = '\f';
		++cptr;
		break;
	      case '"':
		*tptr++ = '"';
		++cptr;
		break;
	      case '\'':
		*tptr++ = '\'';
		++cptr;
		break;
	      case '\\':
		*tptr++ = '\\';
		++cptr;
		break;
	      default:
		if (isdigit((unsigned char)*cptr)) {
		    *tptr = 0;
		    for (i = 0; i < 3; ++i) {
			if (!isdigit((unsigned char)*cptr)) break;
			if (*cptr > '7') warning(cptr, "octal number greater than 7?!");
			*tptr *= 8;
			*tptr += (*cptr - '0');
			++cptr;
		    }
		    ++tptr;
		} else {
		    warning(cptr, "unrecognized escape sequence");
		}
	    }
	} else {
	    *tptr++ = *cptr++;
	}
    }
    *tptr = '\0';
    return(msg);
}



static char *dupstr(ostr)
char *ostr;
{
    char	*nstr;

    nstr = (char *) malloc(strlen(ostr) + 1);
    if (!nstr) error(NULL, "unable to allocate storage");
    strcpy(nstr, ostr);
    return(nstr);
}


/*
 * The Global Stuff
 */


typedef struct _msgT {
    long	msgId;
    char	*str;
    char	*hconst;
    long	offset;
    struct _msgT	*prev, *next;
} msgT;
typedef struct _setT {
    long	setId;
    char	*hconst;
    msgT	*first, *last;
    struct _setT	*prev, *next;
} setT;
typedef struct {
    setT	*first, *last;
} catT;

static setT	*curSet;
static catT	*cat;

/*
 * Find the current byte order.  There are of course some others, but this will do
 * for now.  Note that all we care about is "long".
 */
long MCGetByteOrder() {
    long	l = 0x00010203;
    char	*cptr = (char *) &l;

    if (cptr[0] == 0 && cptr[1] == 1 && cptr[2] == 2 && cptr[3] == 3)
      return MC68KByteOrder;
    else return MCn86ByteOrder;
}


void MCParse(
#if PROTO
		int fd)
#else
		fd)
int fd;
#endif
{
    char	*cptr, *str;
    int	setid, msgid = 0;
    char	hconst[MAXTOKEN+1];
    char	quote = 0;

    if (!cat) {
	cat = (catT *) malloc(sizeof(catT));
	if (!cat) nomem();
	bzero(cat, sizeof(catT));
    }

    hconst[0] = '\0';

    while (cptr = getline(fd)) {
	if (*cptr == '$') {
	    ++cptr;
	    if (strncmp(cptr, "set", 3) == 0) {
		cptr += 3;
		cptr = wskip(cptr);
		setid = atoi(cptr);
		cptr = cskip(cptr);
		if (*cptr) cptr = wskip(cptr);
		if (*cptr == '#') {
		    ++cptr;
		    MCAddSet(setid, token(cptr));
		} else MCAddSet(setid, NULL);
		msgid = 0;
	    } else if (strncmp(cptr, "delset", 6) == 0) {
		cptr += 6;
		cptr = wskip(cptr);
		setid = atoi(cptr);
		MCDelSet(setid);
	    } else if (strncmp(cptr, "quote", 5) == 0) {
		cptr += 5;
		if (!*cptr) quote = 0;
		else {
		    cptr = wskip(cptr);
		    if (!*cptr) quote = 0;
		    else quote = *cptr;
		}
	    } else if (isspace((unsigned char)*cptr)) {
		cptr = wskip(cptr);
		if (*cptr == '#') {
		    ++cptr;
		    strcpy(hconst, token(cptr));
		}
	    } else {
		if (*cptr) {
		    cptr = wskip(cptr);
		    if (*cptr) warning(cptr, "unrecognized line");
		}
	    }
	} else {
	    if (isdigit((unsigned char)*cptr) || *cptr == '#') {
		if (*cptr == '#') {
		    ++msgid;
		    ++cptr;
		    if (!*cptr) {
			MCAddMsg(msgid, "", hconst);
			hconst[0] = '\0';
			continue;
		    }
		    if (!isspace((unsigned char)*cptr)) warning(cptr, "expected a space");
		    ++cptr;
		    if (!*cptr) {
			MCAddMsg(msgid, "", hconst);
			hconst[0] = '\0';
			continue;
		    }
		} else {
		    msgid = atoi(cptr);
		    cptr = cskip(cptr);
		    cptr = wskip(cptr);
		    /* if (*cptr) ++cptr; */
		}
		if (!*cptr) MCDelMsg(msgid);
		else {
		    str = getmsg(fd, cptr, quote);
		    MCAddMsg(msgid, str, hconst);
		    hconst[0] = '\0';
		}
	    }
	}
    }
}

void MCReadCat(
#if PROTO
		int fd)
#else
		fd)
int fd;
#endif
{
    MCHeaderT	mcHead;
    MCMsgT	mcMsg;
    MCSetT	mcSet;
    msgT	*msg;
    setT	*set;
    int		i;
    char	*data;

    cat = (catT *) malloc(sizeof(catT));
    if (!cat) nomem();
    bzero(cat, sizeof(catT));