605 lines
15 KiB
C
605 lines
15 KiB
C
/*
|
|
* Copyright (c) 1980, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)checknr.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* checknr: check an nroff/troff input file for matching macro calls.
|
|
* we also attempt to match size and font changes, but only the embedded
|
|
* kind. These must end in \s0 and \fP resp. Maybe more sophistication
|
|
* later but for now think of these restrictions as contributions to
|
|
* structured typesetting.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
#define MAXSTK 100 /* Stack size */
|
|
#define MAXBR 100 /* Max number of bracket pairs known */
|
|
#define MAXCMDS 500 /* Max number of commands known */
|
|
|
|
void addcmd(char *);
|
|
void addmac(const char *);
|
|
int binsrch(const char *);
|
|
void checkknown(const char *);
|
|
void chkcmd(const char *, const char *);
|
|
void complain(int);
|
|
int eq(const char *, const char *);
|
|
void nomatch(const char *);
|
|
void pe(int);
|
|
void process(FILE *);
|
|
void prop(int);
|
|
static void usage(void);
|
|
|
|
/*
|
|
* The stack on which we remember what we've seen so far.
|
|
*/
|
|
struct stkstr {
|
|
int opno; /* number of opening bracket */
|
|
int pl; /* '+', '-', ' ' for \s, 1 for \f, 0 for .ft */
|
|
int parm; /* parm to size, font, etc */
|
|
int lno; /* line number the thing came in in */
|
|
} stk[MAXSTK];
|
|
int stktop;
|
|
|
|
/*
|
|
* The kinds of opening and closing brackets.
|
|
*/
|
|
struct brstr {
|
|
const char *opbr;
|
|
const char *clbr;
|
|
} br[MAXBR] = {
|
|
/* A few bare bones troff commands */
|
|
#define SZ 0
|
|
{"sz", "sz"}, /* also \s */
|
|
#define FT 1
|
|
{"ft", "ft"}, /* also \f */
|
|
/* the -mm package */
|
|
{"AL", "LE"},
|
|
{"AS", "AE"},
|
|
{"BL", "LE"},
|
|
{"BS", "BE"},
|
|
{"DF", "DE"},
|
|
{"DL", "LE"},
|
|
{"DS", "DE"},
|
|
{"FS", "FE"},
|
|
{"ML", "LE"},
|
|
{"NS", "NE"},
|
|
{"RL", "LE"},
|
|
{"VL", "LE"},
|
|
/* the -ms package */
|
|
{"AB", "AE"},
|
|
{"BD", "DE"},
|
|
{"CD", "DE"},
|
|
{"DS", "DE"},
|
|
{"FS", "FE"},
|
|
{"ID", "DE"},
|
|
{"KF", "KE"},
|
|
{"KS", "KE"},
|
|
{"LD", "DE"},
|
|
{"LG", "NL"},
|
|
{"QS", "QE"},
|
|
{"RS", "RE"},
|
|
{"SM", "NL"},
|
|
{"XA", "XE"},
|
|
{"XS", "XE"},
|
|
/* The -me package */
|
|
{"(b", ")b"},
|
|
{"(c", ")c"},
|
|
{"(d", ")d"},
|
|
{"(f", ")f"},
|
|
{"(l", ")l"},
|
|
{"(q", ")q"},
|
|
{"(x", ")x"},
|
|
{"(z", ")z"},
|
|
/* Things needed by preprocessors */
|
|
{"EQ", "EN"},
|
|
{"TS", "TE"},
|
|
/* Refer */
|
|
{"[", "]"},
|
|
{0, 0}
|
|
};
|
|
|
|
/*
|
|
* All commands known to nroff, plus macro packages.
|
|
* Used so we can complain about unrecognized commands.
|
|
*/
|
|
const char *knowncmds[MAXCMDS] = {
|
|
"$c", "$f", "$h", "$p", "$s", "(b", "(c", "(d", "(f", "(l", "(q", "(t",
|
|
"(x", "(z", ")b", ")c", ")d", ")f", ")l", ")q", ")t", ")x", ")z", "++",
|
|
"+c", "1C", "1c", "2C", "2c", "@(", "@)", "@C", "@D", "@F", "@I", "@M",
|
|
"@c", "@e", "@f", "@h", "@m", "@n", "@o", "@p", "@r", "@t", "@z", "AB",
|
|
"AE", "AF", "AI", "AL", "AM", "AS", "AT", "AU", "AX", "B", "B1", "B2",
|
|
"BD", "BE", "BG", "BL", "BS", "BT", "BX", "C1", "C2", "CD", "CM", "CT",
|
|
"D", "DA", "DE", "DF", "DL", "DS", "DT", "EC", "EF", "EG", "EH", "EM",
|
|
"EN", "EQ", "EX", "FA", "FD", "FE", "FG", "FJ", "FK", "FL", "FN", "FO",
|
|
"FQ", "FS", "FV", "FX", "H", "HC", "HD", "HM", "HO", "HU", "I", "ID",
|
|
"IE", "IH", "IM", "IP", "IX", "IZ", "KD", "KE", "KF", "KQ", "KS", "LB",
|
|
"LC", "LD", "LE", "LG", "LI", "LP", "MC", "ME", "MF", "MH", "ML", "MR",
|
|
"MT", "ND", "NE", "NH", "NL", "NP", "NS", "OF", "OH", "OK", "OP", "P",
|
|
"P1", "PF", "PH", "PP", "PT", "PX", "PY", "QE", "QP", "QS", "R", "RA",
|
|
"RC", "RE", "RL", "RP", "RQ", "RS", "RT", "S", "S0", "S2", "S3", "SA",
|
|
"SG", "SH", "SK", "SM", "SP", "SY", "T&", "TA", "TB", "TC", "TD", "TE",
|
|
"TH", "TL", "TM", "TP", "TQ", "TR", "TS", "TX", "UL", "US", "UX", "VL",
|
|
"WC", "WH", "XA", "XD", "XE", "XF", "XK", "XP", "XS", "[", "[-", "[0",
|
|
"[1", "[2", "[3", "[4", "[5", "[<", "[>", "[]", "]", "]-", "]<", "]>",
|
|
"][", "ab", "ac", "ad", "af", "am", "ar", "as", "b", "ba", "bc", "bd",
|
|
"bi", "bl", "bp", "br", "bx", "c.", "c2", "cc", "ce", "cf", "ch", "cs",
|
|
"ct", "cu", "da", "de", "di", "dl", "dn", "ds", "dt", "dw", "dy", "ec",
|
|
"ef", "eh", "el", "em", "eo", "ep", "ev", "ex", "fc", "fi", "fl", "fo",
|
|
"fp", "ft", "fz", "hc", "he", "hl", "hp", "ht", "hw", "hx", "hy", "i",
|
|
"ie", "if", "ig", "in", "ip", "it", "ix", "lc", "lg", "li", "ll", "ln",
|
|
"lo", "lp", "ls", "lt", "m1", "m2", "m3", "m4", "mc", "mk", "mo", "n1",
|
|
"n2", "na", "ne", "nf", "nh", "nl", "nm", "nn", "np", "nr", "ns", "nx",
|
|
"of", "oh", "os", "pa", "pc", "pi", "pl", "pm", "pn", "po", "pp", "ps",
|
|
"q", "r", "rb", "rd", "re", "rm", "rn", "ro", "rr", "rs", "rt", "sb",
|
|
"sc", "sh", "sk", "so", "sp", "ss", "st", "sv", "sz", "ta", "tc", "th",
|
|
"ti", "tl", "tm", "tp", "tr", "u", "uf", "uh", "ul", "vs", "wh", "xp",
|
|
"yr", 0
|
|
};
|
|
|
|
int lineno; /* current line number in input file */
|
|
const char *cfilename; /* name of current file */
|
|
int nfiles; /* number of files to process */
|
|
int fflag; /* -f: ignore \f */
|
|
int sflag; /* -s: ignore \s */
|
|
int ncmds; /* size of knowncmds */
|
|
int slot; /* slot in knowncmds found by binsrch */
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
FILE *f;
|
|
int i;
|
|
char *cp;
|
|
char b1[4];
|
|
|
|
/* Figure out how many known commands there are */
|
|
while (knowncmds[ncmds])
|
|
ncmds++;
|
|
while (argc > 1 && argv[1][0] == '-') {
|
|
switch(argv[1][1]) {
|
|
|
|
/* -a: add pairs of macros */
|
|
case 'a':
|
|
i = strlen(argv[1]) - 2;
|
|
if (i % 6 != 0)
|
|
usage();
|
|
/* look for empty macro slots */
|
|
for (i=0; br[i].opbr; i++)
|
|
;
|
|
for (cp=argv[1]+3; cp[-1]; cp += 6) {
|
|
br[i].opbr = strncpy(malloc(3), cp, 2);
|
|
br[i].clbr = strncpy(malloc(3), cp+3, 2);
|
|
addmac(br[i].opbr); /* knows pairs are also known cmds */
|
|
addmac(br[i].clbr);
|
|
i++;
|
|
}
|
|
break;
|
|
|
|
/* -c: add known commands */
|
|
case 'c':
|
|
i = strlen(argv[1]) - 2;
|
|
if (i % 3 != 0)
|
|
usage();
|
|
for (cp=argv[1]+3; cp[-1]; cp += 3) {
|
|
if (cp[2] && cp[2] != '.')
|
|
usage();
|
|
strncpy(b1, cp, 2);
|
|
b1[2] = '\0';
|
|
addmac(b1);
|
|
}
|
|
break;
|
|
|
|
/* -f: ignore font changes */
|
|
case 'f':
|
|
fflag = 1;
|
|
break;
|
|
|
|
/* -s: ignore size changes */
|
|
case 's':
|
|
sflag = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
argc--; argv++;
|
|
}
|
|
|
|
nfiles = argc - 1;
|
|
|
|
if (nfiles > 0) {
|
|
for (i=1; i<argc; i++) {
|
|
cfilename = argv[i];
|
|
f = fopen(cfilename, "r");
|
|
if (f == NULL)
|
|
perror(cfilename);
|
|
else
|
|
process(f);
|
|
}
|
|
} else {
|
|
cfilename = "stdin";
|
|
process(stdin);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: checknr [-a.xx.yy.xx.yy...] [-c.xx.xx.xx...] [-s] [-f] file\n");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
process(FILE *f)
|
|
{
|
|
int i, n;
|
|
char mac[5]; /* The current macro or nroff command */
|
|
int pl;
|
|
static char line[256]; /* the current line */
|
|
|
|
stktop = -1;
|
|
for (lineno = 1; fgets(line, sizeof line, f); lineno++) {
|
|
if (line[0] == '.') {
|
|
/*
|
|
* find and isolate the macro/command name.
|
|
*/
|
|
strncpy(mac, line+1, 4);
|
|
if (isspace(mac[0])) {
|
|
pe(lineno);
|
|
printf("Empty command\n");
|
|
} else if (isspace(mac[1])) {
|
|
mac[1] = 0;
|
|
} else if (isspace(mac[2])) {
|
|
mac[2] = 0;
|
|
} else if (mac[0] != '\\' || mac[1] != '\"') {
|
|
pe(lineno);
|
|
printf("Command too long\n");
|
|
}
|
|
|
|
/*
|
|
* Is it a known command?
|
|
*/
|
|
checkknown(mac);
|
|
|
|
/*
|
|
* Should we add it?
|
|
*/
|
|
if (eq(mac, "de"))
|
|
addcmd(line);
|
|
|
|
chkcmd(line, mac);
|
|
}
|
|
|
|
/*
|
|
* At this point we process the line looking
|
|
* for \s and \f.
|
|
*/
|
|
for (i=0; line[i]; i++)
|
|
if (line[i]=='\\' && (i==0 || line[i-1]!='\\')) {
|
|
if (!sflag && line[++i]=='s') {
|
|
pl = line[++i];
|
|
if (isdigit(pl)) {
|
|
n = pl - '0';
|
|
pl = ' ';
|
|
} else
|
|
n = 0;
|
|
while (isdigit(line[++i]))
|
|
n = 10 * n + line[i] - '0';
|
|
i--;
|
|
if (n == 0) {
|
|
if (stk[stktop].opno == SZ) {
|
|
stktop--;
|
|
} else {
|
|
pe(lineno);
|
|
printf("unmatched \\s0\n");
|
|
}
|
|
} else {
|
|
stk[++stktop].opno = SZ;
|
|
stk[stktop].pl = pl;
|
|
stk[stktop].parm = n;
|
|
stk[stktop].lno = lineno;
|
|
}
|
|
} else if (!fflag && line[i]=='f') {
|
|
n = line[++i];
|
|
if (n == 'P') {
|
|
if (stk[stktop].opno == FT) {
|
|
stktop--;
|
|
} else {
|
|
pe(lineno);
|
|
printf("unmatched \\fP\n");
|
|
}
|
|
} else {
|
|
stk[++stktop].opno = FT;
|
|
stk[stktop].pl = 1;
|
|
stk[stktop].parm = n;
|
|
stk[stktop].lno = lineno;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* We've hit the end and look at all this stuff that hasn't been
|
|
* matched yet! Complain, complain.
|
|
*/
|
|
for (i=stktop; i>=0; i--) {
|
|
complain(i);
|
|
}
|
|
}
|
|
|
|
void
|
|
complain(int i)
|
|
{
|
|
pe(stk[i].lno);
|
|
printf("Unmatched ");
|
|
prop(i);
|
|
printf("\n");
|
|
}
|
|
|
|
void
|
|
prop(int i)
|
|
{
|
|
if (stk[i].pl == 0)
|
|
printf(".%s", br[stk[i].opno].opbr);
|
|
else switch(stk[i].opno) {
|
|
case SZ:
|
|
printf("\\s%c%d", stk[i].pl, stk[i].parm);
|
|
break;
|
|
case FT:
|
|
printf("\\f%c", stk[i].parm);
|
|
break;
|
|
default:
|
|
printf("Bug: stk[%d].opno = %d = .%s, .%s",
|
|
i, stk[i].opno, br[stk[i].opno].opbr, br[stk[i].opno].clbr);
|
|
}
|
|
}
|
|
|
|
void
|
|
chkcmd(const char *line __unused, const char *mac)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* Check to see if it matches top of stack.
|
|
*/
|
|
if (stktop >= 0 && eq(mac, br[stk[stktop].opno].clbr))
|
|
stktop--; /* OK. Pop & forget */
|
|
else {
|
|
/* No. Maybe it's an opener */
|
|
for (i=0; br[i].opbr; i++) {
|
|
if (eq(mac, br[i].opbr)) {
|
|
/* Found. Push it. */
|
|
stktop++;
|
|
stk[stktop].opno = i;
|
|
stk[stktop].pl = 0;
|
|
stk[stktop].parm = 0;
|
|
stk[stktop].lno = lineno;
|
|
break;
|
|
}
|
|
/*
|
|
* Maybe it's an unmatched closer.
|
|
* NOTE: this depends on the fact
|
|
* that none of the closers can be
|
|
* openers too.
|
|
*/
|
|
if (eq(mac, br[i].clbr)) {
|
|
nomatch(mac);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nomatch(const char *mac)
|
|
{
|
|
int i, j;
|
|
|
|
/*
|
|
* Look for a match further down on stack
|
|
* If we find one, it suggests that the stuff in
|
|
* between is supposed to match itself.
|
|
*/
|
|
for (j=stktop; j>=0; j--)
|
|
if (eq(mac,br[stk[j].opno].clbr)) {
|
|
/* Found. Make a good diagnostic. */
|
|
if (j == stktop-2) {
|
|
/*
|
|
* Check for special case \fx..\fR and don't
|
|
* complain.
|
|
*/
|
|
if (stk[j+1].opno==FT && stk[j+1].parm!='R'
|
|
&& stk[j+2].opno==FT && stk[j+2].parm=='R') {
|
|
stktop = j -1;
|
|
return;
|
|
}
|
|
/*
|
|
* We have two unmatched frobs. Chances are
|
|
* they were intended to match, so we mention
|
|
* them together.
|
|
*/
|
|
pe(stk[j+1].lno);
|
|
prop(j+1);
|
|
printf(" does not match %d: ", stk[j+2].lno);
|
|
prop(j+2);
|
|
printf("\n");
|
|
} else for (i=j+1; i <= stktop; i++) {
|
|
complain(i);
|
|
}
|
|
stktop = j-1;
|
|
return;
|
|
}
|
|
/* Didn't find one. Throw this away. */
|
|
pe(lineno);
|
|
printf("Unmatched .%s\n", mac);
|
|
}
|
|
|
|
/* eq: are two strings equal? */
|
|
int
|
|
eq(const char *s1, const char *s2)
|
|
{
|
|
return (strcmp(s1, s2) == 0);
|
|
}
|
|
|
|
/* print the first part of an error message, given the line number */
|
|
void
|
|
pe(int linen)
|
|
{
|
|
if (nfiles > 1)
|
|
printf("%s: ", cfilename);
|
|
printf("%d: ", linen);
|
|
}
|
|
|
|
void
|
|
checkknown(const char *mac)
|
|
{
|
|
|
|
if (eq(mac, "."))
|
|
return;
|
|
if (binsrch(mac) >= 0)
|
|
return;
|
|
if (mac[0] == '\\' && mac[1] == '"') /* comments */
|
|
return;
|
|
|
|
pe(lineno);
|
|
printf("Unknown command: .%s\n", mac);
|
|
}
|
|
|
|
/*
|
|
* We have a .de xx line in "line". Add xx to the list of known commands.
|
|
*/
|
|
void
|
|
addcmd(char *line)
|
|
{
|
|
char *mac;
|
|
|
|
/* grab the macro being defined */
|
|
mac = line+4;
|
|
while (isspace(*mac))
|
|
mac++;
|
|
if (*mac == 0) {
|
|
pe(lineno);
|
|
printf("illegal define: %s\n", line);
|
|
return;
|
|
}
|
|
mac[2] = 0;
|
|
if (isspace(mac[1]) || mac[1] == '\\')
|
|
mac[1] = 0;
|
|
if (ncmds >= MAXCMDS) {
|
|
printf("Only %d known commands allowed\n", MAXCMDS);
|
|
exit(1);
|
|
}
|
|
addmac(mac);
|
|
}
|
|
|
|
/*
|
|
* Add mac to the list. We should really have some kind of tree
|
|
* structure here but this is a quick-and-dirty job and I just don't
|
|
* have time to mess with it. (I wonder if this will come back to haunt
|
|
* me someday?) Anyway, I claim that .de is fairly rare in user
|
|
* nroff programs, and the register loop below is pretty fast.
|
|
*/
|
|
void
|
|
addmac(const char *mac)
|
|
{
|
|
const char **src, **dest, **loc;
|
|
|
|
if (binsrch(mac) >= 0){ /* it's OK to redefine something */
|
|
#ifdef DEBUG
|
|
printf("binsrch(%s) -> already in table\n", mac);
|
|
#endif
|
|
return;
|
|
}
|
|
/* binsrch sets slot as a side effect */
|
|
#ifdef DEBUG
|
|
printf("binsrch(%s) -> %d\n", mac, slot);
|
|
#endif
|
|
loc = &knowncmds[slot];
|
|
src = &knowncmds[ncmds-1];
|
|
dest = src+1;
|
|
while (dest > loc)
|
|
*dest-- = *src--;
|
|
*loc = strcpy(malloc(3), mac);
|
|
ncmds++;
|
|
#ifdef DEBUG
|
|
printf("after: %s %s %s %s %s, %d cmds\n", knowncmds[slot-2], knowncmds[slot-1], knowncmds[slot], knowncmds[slot+1], knowncmds[slot+2], ncmds);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Do a binary search in knowncmds for mac.
|
|
* If found, return the index. If not, return -1.
|
|
*/
|
|
int
|
|
binsrch(const char *mac)
|
|
{
|
|
const char *p; /* pointer to current cmd in list */
|
|
int d; /* difference if any */
|
|
int mid; /* mid point in binary search */
|
|
int top, bot; /* boundaries of bin search, inclusive */
|
|
|
|
top = ncmds-1;
|
|
bot = 0;
|
|
while (top >= bot) {
|
|
mid = (top+bot)/2;
|
|
p = knowncmds[mid];
|
|
d = p[0] - mac[0];
|
|
if (d == 0)
|
|
d = p[1] - mac[1];
|
|
if (d == 0)
|
|
return mid;
|
|
if (d < 0)
|
|
bot = mid + 1;
|
|
else
|
|
top = mid - 1;
|
|
}
|
|
slot = bot; /* place it would have gone */
|
|
return -1;
|
|
}
|