/* $Id$ */
/*
* Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, 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.
*/
#include <sys/stat.h>
#include <assert.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "mdoc.h"
#define WARN_WALL 0x03 /* All-warnings mask. */
#define WARN_WCOMPAT (1 << 0) /* Compatibility warnings. */
#define WARN_WSYNTAX (1 << 1) /* Syntax warnings. */
#define WARN_WERR (1 << 2) /* Warnings->errors. */
enum outt {
OUTT_ASCII,
OUTT_LATIN1,
OUTT_UTF8,
OUTT_TREE,
OUTT_LINT
};
typedef int (*out_run)(void *, const struct mdoc *);
typedef void (*out_free)(void *);
extern char *__progname;
extern void *ascii_alloc(void);
extern void *latin1_alloc(void);
extern void *utf8_alloc(void);
extern int terminal_run(void *, const struct mdoc *);
extern int tree_run(void *, const struct mdoc *);
extern void terminal_free(void *);
__dead static void version(void);
__dead static void usage(void);
static int foptions(int *, char *);
static int toptions(enum outt *, char *);
static int woptions(int *, char *);
static int merr(void *, int, int, const char *);
static int mwarn(void *, int, int,
enum mdoc_warn, const char *);
static int file(char **, size_t *, char **, size_t *,
const char *, struct mdoc *);
static int fdesc(char **, size_t *, char **, size_t *,
const char *, int, struct mdoc *);
int
main(int argc, char *argv[])
{
int c, rc, fflags, wflags;
struct mdoc_cb cb;
struct mdoc *mdoc;
char *buf, *line;
size_t bufsz, linesz;
void *outdata;
enum outt outtype;
out_run outrun;
out_free outfree;
fflags = wflags = 0;
outtype = OUTT_ASCII;
/* LINTED */
while (-1 != (c = getopt(argc, argv, "f:VW:T:")))
switch (c) {
case ('f'):
if ( ! foptions(&fflags, optarg))
return(0);
break;
case ('T'):
if ( ! toptions(&outtype, optarg))
return(0);
break;
case ('W'):
if ( ! woptions(&wflags, optarg))
return(0);
break;
case ('V'):
version();
/* NOTREACHED */
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
/*
* Allocate the appropriate front-end. Note that utf8, ascii
* and latin1 all resolve to the terminal front-end with
* different encodings (see terminal.c). Not all frontends have
* cleanup or alloc routines.
*/
switch (outtype) {
case (OUTT_LATIN1):
outdata = latin1_alloc();
outrun = terminal_run;
outfree = terminal_free;
break;
case (OUTT_UTF8):
outdata = utf8_alloc();
outrun = terminal_run;
outfree = terminal_free;
break;
case (OUTT_TREE):
outdata = NULL;
outrun = tree_run;
outfree = NULL;
break;
case (OUTT_LINT):
outdata = NULL;
outrun = NULL;
outfree = NULL;
break;
default:
outdata = ascii_alloc();
outrun = terminal_run;
outfree = terminal_free;
break;
}
/*
* All callbacks route into here, where we print them onto the
* screen. XXX - for now, no path for debugging messages.
*/
cb.mdoc_msg = NULL;
cb.mdoc_err = merr;
cb.mdoc_warn = mwarn;
buf = line = NULL;
bufsz = linesz = 0;
mdoc = mdoc_alloc(&wflags, fflags, &cb);
while (*argv) {
if ( ! file(&line, &linesz, &buf, &bufsz, *argv, mdoc))
break;
if (outrun && ! (*outrun)(outdata, mdoc))
break;
/* Reset the parser for another file. */
mdoc_reset(mdoc);
argv++;
}
rc = NULL == *argv;
if (buf)
free(buf);
if (line)
free(line);
if (outfree)
(*outfree)(outdata);
mdoc_free(mdoc);
return(rc ? EXIT_SUCCESS : EXIT_FAILURE);
}
__dead static void
version(void)
{
(void)printf("%s %s\n", __progname, VERSION);
exit(0);
/* NOTREACHED */
}
__dead static void
usage(void)
{
(void)fprintf(stderr, "usage: %s\n", __progname);
exit(1);
/* NOTREACHED */
}
static int
file(char **ln, size_t *lnsz, char **buf, size_t *bufsz,
const char *file, struct mdoc *mdoc)
{
int fd, c;
if (-1 == (fd = open(file, O_RDONLY, 0))) {
warn("%s", file);
return(0);
}
c = fdesc(ln, lnsz, buf, bufsz, file, fd, mdoc);
if (-1 == close(fd))
warn("%s", file);
return(c);
}
static int
fdesc(char **lnp, size_t *lnsz, char **bufp, size_t *bufsz,
const char *f, int fd, struct mdoc *mdoc)
{
size_t sz;
ssize_t ssz;
struct stat st;
int j, i, pos, lnn;
char *ln, *buf;
buf = *bufp;
ln = *lnp;
/*
* Two buffers: ln and buf. buf is the input buffer, optimised
* for each file's block size. ln is a line buffer. Both
* growable, hence passed in by ptr-ptr.
*/
if (-1 == fstat(fd, &st)) {
warnx("%s", f);
sz = BUFSIZ;
} else
sz = (unsigned)BUFSIZ > st.st_blksize ?
(size_t)BUFSIZ : st.st_blksize;
if (sz > *bufsz) {
if (NULL == (buf = realloc(buf, sz)))
err(1, "realloc");
*bufp = buf;
*bufsz = sz;
}
/*
* Fill buf with file blocksize and parse newlines into ln.
*/
for (lnn = 1, pos = 0; ; ) {
if (-1 == (ssz = read(fd, buf, sz))) {
warn("%s", f);
return(0);
} else if (0 == ssz)
break;
for (i = 0; i < (int)ssz; i++) {
if (pos >= (int)*lnsz) {
*lnsz += 256; /* Step-size. */
ln = realloc(ln, *lnsz);
if (NULL == ln)
err(1, "realloc");
*lnp = ln;
}
if ('\n' != buf[i]) {
ln[pos++] = buf[i];
continue;
}
/* Check for CPP-escaped newline. */
if (pos > 0 && '\\' == ln[pos - 1]) {
for (j = pos - 1; j >= 0; j--)
if ('\\' != ln[j])
break;
if ( ! ((pos - j) % 2)) {
pos--;
lnn++;
continue;
}
}
ln[pos] = 0;
if ( ! mdoc_parseln(mdoc, lnn, ln))
return(0);
lnn++;
pos = 0;
}
}
return(mdoc_endparse(mdoc));
}
static int
toptions(enum outt *tflags, char *arg)
{
if (0 == strcmp(arg, "ascii"))
*tflags = OUTT_ASCII;
else if (0 == strcmp(arg, "latin1"))
*tflags = OUTT_LATIN1;
else if (0 == strcmp(arg, "utf8"))
*tflags = OUTT_UTF8;
else if (0 == strcmp(arg, "lint"))
*tflags = OUTT_LINT;
else if (0 == strcmp(arg, "tree"))
*tflags = OUTT_TREE;
else {
warnx("bad argument: -T%s", arg);
return(0);
}
return(1);
}
/*
* Parse out the options for [-fopt...] setting compiler options. These
* can be comma-delimited or called again.
*/
static int
foptions(int *fflags, char *arg)
{
char *v;
char *toks[4];
toks[0] = "ign-scope";
toks[1] = "ign-escape";
toks[2] = "ign-macro";
toks[3] = NULL;
while (*arg)
switch (getsubopt(&arg, toks, &v)) {
case (0):
*fflags |= MDOC_IGN_SCOPE;
break;
case (1):
*fflags |= MDOC_IGN_ESCAPE;
break;
case (2):
*fflags |= MDOC_IGN_MACRO;
break;
default:
warnx("bad argument: -f%s", arg);
return(0);
}
return(1);
}
/*
* Parse out the options for [-Werr...], which sets warning modes.
* These can be comma-delimited or called again.
*/
static int
woptions(int *wflags, char *arg)
{
char *v;
char *toks[5];
toks[0] = "all";
toks[1] = "compat";
toks[2] = "syntax";
toks[3] = "error";
toks[4] = NULL;
while (*arg)
switch (getsubopt(&arg, toks, &v)) {
case (0):
*wflags |= WARN_WALL;
break;
case (1):
*wflags |= WARN_WCOMPAT;
break;
case (2):
*wflags |= WARN_WSYNTAX;
break;
case (3):
*wflags |= WARN_WERR;
break;
default:
warnx("bad argument: -W%s", arg);
return(0);
}
return(1);
}
/* ARGSUSED */
static int
merr(void *arg, int line, int col, const char *msg)
{
warnx("error: %s (line %d, column %d)", msg, line, col);
return(0);
}
static int
mwarn(void *arg, int line, int col,
enum mdoc_warn type, const char *msg)
{
int flags;
char *wtype;
flags = *(int *)arg;
wtype = NULL;
switch (type) {
case (WARN_COMPAT):
wtype = "compat";
if (flags & WARN_WCOMPAT)
break;
return(1);
case (WARN_SYNTAX):
wtype = "syntax";
if (flags & WARN_WSYNTAX)
break;
return(1);
}
assert(wtype);
warnx("%s warning: %s (line %d, column %d)",
wtype, msg, line, col);
if ( ! (flags & WARN_WERR))
return(1);
warnx("%s: considering warnings as errors",
__progname);
return(0);
}
