]> git.cameronkatri.com Git - mandoc.git/blobdiff - main.c
Merge OpenBSD's `so' handling (plus some documentation). Great work to
[mandoc.git] / main.c
diff --git a/main.c b/main.c
index 7365ad5024a2e87e748e950c7677c7c99c0aab9b..16b54def251c26cfa738942ef75d5e06b3d1127f 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,6 +1,7 @@
-/*     $Id: main.c,v 1.64 2010/05/14 17:59:07 kristaps Exp $ */
+/*     $Id: main.c,v 1.113 2010/12/01 16:54:25 kristaps Exp $ */
 /*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010 Ingo Schwarze <schwarze@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
 #include "config.h"
 #endif
 
+#include <sys/mman.h>
 #include <sys/stat.h>
 
 #include <assert.h>
+#include <ctype.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>
 #include <unistd.h>
 
+#include "mandoc.h"
+#include "main.h"
 #include "mdoc.h"
 #include "man.h"
-#include "main.h"
+#include "roff.h"
+
+#ifndef MAP_FILE
+#define        MAP_FILE        0
+#endif
 
 #define        UNCONST(a)      ((void *)(uintptr_t)(const void *)(a))
 
@@ -62,61 +71,154 @@ enum       outt {
        OUTT_TREE,
        OUTT_HTML,
        OUTT_XHTML,
-       OUTT_LINT
+       OUTT_LINT,
+       OUTT_PS,
+       OUTT_PDF
 };
 
 struct curparse {
        const char       *file;         /* Current parse. */
        int               fd;           /* Current parse. */
-       int               wflags;
-#define        WARN_WALL        (1 << 0)       /* All-warnings mask. */
-#define        WARN_WERR        (1 << 2)       /* Warnings->errors. */
-       int               fflags;
-#define        FL_IGN_SCOPE     (1 << 0)       /* Ignore scope errors. */
-#define        FL_NIGN_ESCAPE   (1 << 1)       /* Don't ignore bad escapes. */
-#define        FL_NIGN_MACRO    (1 << 2)       /* Don't ignore bad macros. */
-#define        FL_IGN_ERRORS    (1 << 4)       /* Ignore failed parse. */
-       enum intt         inttype;      /* Input parsers... */
-       struct man       *man;
-       struct man       *lastman;
-       struct mdoc      *mdoc;
-       struct mdoc      *lastmdoc;
-       enum outt         outtype;      /* Output devices... */
-       out_mdoc          outmdoc;
-       out_man           outman;
-       out_free          outfree;
-       void             *outdata;
-       char              outopts[BUFSIZ];
+       int               line;         /* Line number in the file. */
+       enum mandoclevel  wlevel;       /* Ignore messages below this. */
+       int               wstop;        /* Stop after a file with a warning. */
+       enum intt         inttype;      /* which parser to use */
+       struct man       *pman;         /* persistent man parser */
+       struct mdoc      *pmdoc;        /* persistent mdoc parser */
+       struct man       *man;          /* man parser */
+       struct mdoc      *mdoc;         /* mdoc parser */
+       struct roff      *roff;         /* roff parser (!NULL) */
+       struct regset     regs;         /* roff registers */
+       enum outt         outtype;      /* which output to use */
+       out_mdoc          outmdoc;      /* mdoc output ptr */
+       out_man           outman;       /* man output ptr */
+       out_free          outfree;      /* free output ptr */
+       void             *outdata;      /* data for output */
+       char              outopts[BUFSIZ]; /* buf of output opts */
 };
 
-#define        FL_STRICT         FL_NIGN_ESCAPE | \
-                         FL_NIGN_MACRO
+static const char * const      mandoclevels[MANDOCLEVEL_MAX] = {
+       "SUCCESS",
+       "RESERVED",
+       "WARNING",
+       "ERROR",
+       "FATAL",
+       "BADARG",
+       "SYSERR"
+};
 
-static int               foptions(int *, char *);
-static int               toptions(struct curparse *, char *);
+static const enum mandocerr    mandoclimits[MANDOCLEVEL_MAX] = {
+       MANDOCERR_OK,
+       MANDOCERR_WARNING,
+       MANDOCERR_WARNING,
+       MANDOCERR_ERROR,
+       MANDOCERR_FATAL,
+       MANDOCERR_MAX,
+       MANDOCERR_MAX
+};
+
+static const char * const      mandocerrs[MANDOCERR_MAX] = {
+       "ok",
+
+       "generic warning",
+
+       ".so is fragile, better use ln(1)",
+       "text should be uppercase",
+       "sections out of conventional order",
+       "section name repeats",
+       "out of order prologue",
+       "repeated prologue entry",
+       "list type must come first",
+       "tab in non-literal context",
+       "bad escape sequence",
+       "unterminated quoted string",
+       "argument requires the width argument",
+       "superfluous width argument",
+       "bad date argument",
+       "bad width argument",
+       "unknown manual section",
+       "section not in conventional manual section",
+       "end of line whitespace",
+       "blocks badly nested",
+
+       "generic error",
+
+       "NAME section must come first",
+       "bad Boolean value",
+       "child violates parent syntax",
+       "bad AT&T symbol",
+       "bad standard",
+       "list type repeated",
+       "display type repeated",
+       "argument repeated",
+       "ignoring argument",
+       "manual name not yet set",
+       "obsolete macro ignored",
+       "empty macro ignored",
+       "macro not allowed in body",
+       "macro not allowed in prologue",
+       "bad character",
+       "bad NAME section contents",
+       "no blank lines",
+       "no text in this context",
+       "bad comment style",
+       "unknown macro will be lost",
+       "NOT IMPLEMENTED: skipping request",
+       "line scope broken",
+       "argument count wrong",
+       "request scope close w/none open",
+       "scope already open",
+       "scope open on exit",
+       "macro requires line argument(s)",
+       "macro requires body argument(s)",
+       "macro requires argument(s)",
+       "no title in document",
+       "missing list type",
+       "missing display type",
+       "missing font type",
+       "line argument(s) will be lost",
+       "body argument(s) will be lost",
+       "paragraph macro ignored",
+
+       "generic fatal error",
+
+       "column syntax is inconsistent",
+       "displays may not be nested",
+       "unsupported display type",
+       "blocks badly nested",
+       "no such block is open",
+       "line scope broken, syntax violated",
+       "argument count wrong, violates syntax",
+       "child violates parent syntax",
+       "argument count wrong, violates syntax",
+       "NOT IMPLEMENTED: .so with absolute path or \"..\"",
+       "no document body",
+       "no document prologue",
+       "utsname system call failed",
+       "static buffer exhausted",
+};
+
+static void              parsebuf(struct curparse *, struct buf, int);
+static void              pdesc(struct curparse *);
+static void              fdesc(struct curparse *);
+static void              ffile(const char *, struct curparse *);
+static int               pfile(const char *, struct curparse *);
 static int               moptions(enum intt *, char *);
-static int               woptions(int *, char *);
-static int               merr(void *, int, int, const char *);
-static int               mwarn(void *, int, int, const char *);
-static void              ffile(struct buf *, struct buf *, 
-                               const char *, struct curparse *);
-static void              fdesc(struct buf *, struct buf *,
-                               struct curparse *);
-static int               pset(const char *, int, struct curparse *,
-                               struct man **, struct mdoc **);
-static struct man       *man_init(struct curparse *);
-static struct mdoc      *mdoc_init(struct curparse *);
-static void              version(void) __attribute__((noreturn));
+static int               mmsg(enum mandocerr, void *, 
+                               int, int, const char *);
+static void              pset(const char *, int, struct curparse *);
+static int               toptions(struct curparse *, char *);
 static void              usage(void) __attribute__((noreturn));
+static void              version(void) __attribute__((noreturn));
+static int               woptions(struct curparse *, char *);
 
 static const char       *progname;
-static         int               with_error, with_warning;
+static enum mandoclevel  exit_status = MANDOCLEVEL_OK;
 
 int
 main(int argc, char *argv[])
 {
        int              c;
-       struct buf       ln, blk;
        struct curparse  curp;
 
        progname = strrchr(argv[0], '/');
@@ -129,17 +231,14 @@ main(int argc, char *argv[])
 
        curp.inttype = INTT_AUTO;
        curp.outtype = OUTT_ASCII;
+       curp.wlevel  = MANDOCLEVEL_FATAL;
 
        /* LINTED */
-       while (-1 != (c = getopt(argc, argv, "f:m:O:T:VW:")))
+       while (-1 != (c = getopt(argc, argv, "m:O:T:VW:")))
                switch (c) {
-               case ('f'):
-                       if ( ! foptions(&curp.fflags, optarg))
-                               return(EXIT_FAILURE);
-                       break;
                case ('m'):
                        if ( ! moptions(&curp.inttype, optarg))
-                               return(EXIT_FAILURE);
+                               return((int)MANDOCLEVEL_BADARG);
                        break;
                case ('O'):
                        (void)strlcat(curp.outopts, optarg, BUFSIZ);
@@ -147,11 +246,11 @@ main(int argc, char *argv[])
                        break;
                case ('T'):
                        if ( ! toptions(&curp, optarg))
-                               return(EXIT_FAILURE);
+                               return((int)MANDOCLEVEL_BADARG);
                        break;
                case ('W'):
-                       if ( ! woptions(&curp.wflags, optarg))
-                               return(EXIT_FAILURE);
+                       if ( ! woptions(&curp, optarg))
+                               return((int)MANDOCLEVEL_BADARG);
                        break;
                case ('V'):
                        version();
@@ -164,32 +263,30 @@ main(int argc, char *argv[])
        argc -= optind;
        argv += optind;
 
-       memset(&ln, 0, sizeof(struct buf));
-       memset(&blk, 0, sizeof(struct buf));
-
        if (NULL == *argv) {
                curp.file = "<stdin>";
                curp.fd = STDIN_FILENO;
 
-               fdesc(&blk, &ln, &curp);
+               fdesc(&curp);
        }
 
        while (*argv) {
-               ffile(&blk, &ln, *argv, &curp);
-
-               if (with_error && !(curp.fflags & FL_IGN_ERRORS))
+               ffile(*argv, &curp);
+               if (MANDOCLEVEL_OK != exit_status && curp.wstop)
                        break;
                ++argv;
        }
 
-       if (blk.buf)
-               free(blk.buf);
-       if (ln.buf)
-               free(ln.buf);
        if (curp.outfree)
                (*curp.outfree)(curp.outdata);
-
-       return((with_warning || with_error) ? EXIT_FAILURE :  EXIT_SUCCESS );
+       if (curp.pmdoc)
+               mdoc_free(curp.pmdoc);
+       if (curp.pman)
+               man_free(curp.pman);
+       if (curp.roff)
+               roff_free(curp.roff);
+
+       return((int)exit_status);
 }
 
 
@@ -198,7 +295,7 @@ version(void)
 {
 
        (void)printf("%s %s\n", progname, VERSION);
-       exit(EXIT_SUCCESS);
+       exit((int)MANDOCLEVEL_OK);
 }
 
 
@@ -206,212 +303,222 @@ static void
 usage(void)
 {
 
-       (void)fprintf(stderr, "usage: %s [-V] [-foption] "
-                       "[-mformat] [-Ooption] [-Toutput] "
-                       "[-Werr] [file...]\n", progname);
-       exit(EXIT_FAILURE);
+       (void)fprintf(stderr, "usage: %s "
+                       "[-V] "
+                       "[-foption] "
+                       "[-mformat] "
+                       "[-Ooption] "
+                       "[-Toutput] "
+                       "[-Werr] "
+                       "[file...]\n", 
+                       progname);
+
+       exit((int)MANDOCLEVEL_BADARG);
 }
 
-
-static struct man *
-man_init(struct curparse *curp)
+static void
+ffile(const char *file, struct curparse *curp)
 {
-       int              pflags;
-       struct man_cb    mancb;
 
-       mancb.man_err = merr;
-       mancb.man_warn = mwarn;
+       /*
+        * Called once per input file.  Get the file ready for reading,
+        * pass it through to the parser-driver, then close it out.
+        * XXX: don't do anything special as this is only called for
+        * files; stdin goes directly to fdesc().
+        */
 
-       /* Defaults from mandoc.1. */
+       curp->file = file;
 
-       pflags = MAN_IGN_MACRO | MAN_IGN_ESCAPE;
+       if (-1 == (curp->fd = open(curp->file, O_RDONLY, 0))) {
+               perror(curp->file);
+               exit_status = MANDOCLEVEL_SYSERR;
+               return;
+       }
 
-       if (curp->fflags & FL_NIGN_MACRO)
-               pflags &= ~MAN_IGN_MACRO;
-       if (curp->fflags & FL_NIGN_ESCAPE)
-               pflags &= ~MAN_IGN_ESCAPE;
+       fdesc(curp);
 
-       return(man_alloc(curp, pflags, &mancb));
+       if (-1 == close(curp->fd))
+               perror(curp->file);
 }
 
-
-static struct mdoc *
-mdoc_init(struct curparse *curp)
+static int
+pfile(const char *file, struct curparse *curp)
 {
-       int              pflags;
-       struct mdoc_cb   mdoccb;
+       const char      *savefile;
+       int              fd, savefd;
 
-       mdoccb.mdoc_err = merr;
-       mdoccb.mdoc_warn = mwarn;
+       if (-1 == (fd = open(file, O_RDONLY, 0))) {
+               perror(file);
+               exit_status = MANDOCLEVEL_SYSERR;
+               return(0);
+       }
+
+       savefile = curp->file;
+       savefd = curp->fd;
+
+       curp->file = file;
+       curp->fd = fd;
 
-       /* Defaults from mandoc.1. */
+       pdesc(curp);
 
-       pflags = MDOC_IGN_MACRO | MDOC_IGN_ESCAPE;
+       curp->file = savefile;
+       curp->fd = savefd;
 
-       if (curp->fflags & FL_IGN_SCOPE)
-               pflags |= MDOC_IGN_SCOPE;
-       if (curp->fflags & FL_NIGN_ESCAPE)
-               pflags &= ~MDOC_IGN_ESCAPE;
-       if (curp->fflags & FL_NIGN_MACRO)
-               pflags &= ~MDOC_IGN_MACRO;
+       if (-1 == close(fd))
+               perror(file);
 
-       return(mdoc_alloc(curp, pflags, &mdoccb));
+       return(MANDOCLEVEL_FATAL > exit_status ? 1 : 0);
 }
 
 
 static void
-ffile(struct buf *blk, struct buf *ln, 
-               const char *file, struct curparse *curp)
+resize_buf(struct buf *buf, size_t initial)
 {
 
-       curp->file = file;
-       if (-1 == (curp->fd = open(curp->file, O_RDONLY, 0))) {
-               perror(curp->file);
-               with_error = 1;
-               return;
+       buf->sz = buf->sz ? 2 * buf->sz : initial;
+       buf->buf = realloc(buf->buf, buf->sz);
+       if (NULL == buf->buf) {
+               perror(NULL);
+               exit((int)MANDOCLEVEL_SYSERR);
        }
-
-       fdesc(blk, ln, curp);
-
-       if (-1 == close(curp->fd))
-               perror(curp->file);
 }
 
 
-static void
-fdesc(struct buf *blk, struct buf *ln, struct curparse *curp)
+static int
+read_whole_file(struct curparse *curp, struct buf *fb, int *with_mmap)
 {
-       size_t           sz;
-       ssize_t          ssz;
        struct stat      st;
-       int              j, i, pos, lnn, comment;
-       struct man      *man;
-       struct mdoc     *mdoc;
-
-       sz = BUFSIZ;
-       man = NULL;
-       mdoc = NULL;
-
-       /*
-        * Two buffers: ln and buf.  buf is the input buffer optimised
-        * here for each file's block size.  ln is a line buffer.  Both
-        * growable, hence passed in by ptr-ptr.
-        */
+       size_t           off;
+       ssize_t          ssz;
 
        if (-1 == fstat(curp->fd, &st)) {
                perror(curp->file);
-               with_error = 1;
-               return;
+               return(0);
        }
-       if ((size_t)st.st_blksize > sz)
-               sz = st.st_blksize;
 
-       if (sz > blk->sz) {
-               void *buf = realloc(blk->buf, sz);
+       /*
+        * If we're a regular file, try just reading in the whole entry
+        * via mmap().  This is faster than reading it into blocks, and
+        * since each file is only a few bytes to begin with, I'm not
+        * concerned that this is going to tank any machines.
+        */
 
-               if (NULL == buf) {
-                       perror(NULL);
-                       with_error = 1;
-                       return;
+       if (S_ISREG(st.st_mode)) {
+               if (st.st_size >= (1U << 31)) {
+                       fprintf(stderr, "%s: input too large\n", 
+                                       curp->file);
+                       return(0);
                }
-               blk->buf = buf;
-               blk->sz = sz;
+               *with_mmap = 1;
+               fb->sz = (size_t)st.st_size;
+               fb->buf = mmap(NULL, fb->sz, PROT_READ, 
+                               MAP_FILE|MAP_SHARED, curp->fd, 0);
+               if (fb->buf != MAP_FAILED)
+                       return(1);
        }
 
-       /* Fill buf with file blocksize. */
+       /*
+        * If this isn't a regular file (like, say, stdin), then we must
+        * go the old way and just read things in bit by bit.
+        */
 
-       for (lnn = pos = comment = 0; ; ) {
-               if (-1 == (ssz = read(curp->fd, blk->buf, sz))) {
+       *with_mmap = 0;
+       off = 0;
+       fb->sz = 0;
+       fb->buf = NULL;
+       for (;;) {
+               if (off == fb->sz) {
+                       if (fb->sz == (1U << 31)) {
+                               fprintf(stderr, "%s: input too large\n", 
+                                               curp->file);
+                               break;
+                       }
+                       resize_buf(fb, 65536);
+               }
+               ssz = read(curp->fd, fb->buf + (int)off, fb->sz - off);
+               if (ssz == 0) {
+                       fb->sz = off;
+                       return(1);
+               }
+               if (ssz == -1) {
                        perror(curp->file);
-                       goto bailout;
-               } else if (0 == ssz) 
                        break;
+               }
+               off += (size_t)ssz;
+       }
 
-               /* Parse the read block into partial or full lines. */
-
-               for (i = 0; i < (int)ssz; i++) {
-                       if (pos >= (int)ln->sz) {
-                               ln->sz += 256; /* Step-size. */
-                               ln->buf = realloc(ln->buf, ln->sz);
-                               if (NULL == ln->buf) {
-                                       perror(NULL);
-                                       goto bailout;
-                               }
-                       }
+       free(fb->buf);
+       fb->buf = NULL;
+       return(0);
+}
 
-                       if ('\n' != blk->buf[i]) {
-                               if (comment)
-                                       continue;
-                               ln->buf[pos++] = blk->buf[i];
 
-                               /* Handle in-line `\"' comments. */
+static void
+fdesc(struct curparse *curp)
+{
 
-                               if (1 == pos || '\"' != ln->buf[pos - 1])
-                                       continue;
+       /*
+        * Called once per file with an opened file descriptor.  All
+        * pre-file-parse operations (whether stdin or a file) should go
+        * here.
+        *
+        * This calls down into the nested parser, which drills down and
+        * fully parses a file and all its dependences (i.e., `so').  It
+        * then runs the cleanup validators and pushes to output.
+        */
 
-                               for (j = pos - 2; j >= 0; j--)
-                                       if ('\\' != ln->buf[j])
-                                               break;
+       /* Zero the parse type. */
 
-                               if ( ! ((pos - 2 - j) % 2))
-                                       continue;
+       curp->mdoc = NULL;
+       curp->man = NULL;
 
-                               comment = 1;
-                               pos -= 2;
-                               for (; pos > 0; --pos) {
-                                       if (ln->buf[pos - 1] != ' ')
-                                               break;
-                                       if (pos > 2 && ln->buf[pos - 2] == '\\')
-                                               break;
-                               }
-                               continue;
-                       } 
+       /* Make sure the mandotory roff parser is initialised. */
 
-                       /* Handle escaped `\\n' newlines. */
+       if (NULL == curp->roff) {
+               curp->roff = roff_alloc(&curp->regs, curp, mmsg);
+               assert(curp->roff);
+       }
 
-                       if (pos > 0 && 0 == comment && 
-                                       '\\' == ln->buf[pos - 1]) {
-                               for (j = pos - 1; j >= 0; j--)
-                                       if ('\\' != ln->buf[j])
-                                               break;
-                               if ( ! ((pos - j) % 2)) {
-                                       pos--;
-                                       lnn++;
-                                       continue;
-                               }
-                       }
+       /* Fully parse the file. */
 
-                       ln->buf[pos] = 0;
-                       lnn++;
+       pdesc(curp);
 
-                       /* If unset, assign parser in pset(). */
+       if (MANDOCLEVEL_FATAL <= exit_status)
+               goto cleanup;
 
-                       if ( ! (man || mdoc) && ! pset(ln->buf, 
-                                               pos, curp, &man, &mdoc))
-                               goto bailout;
+       /* NOTE a parser may not have been assigned, yet. */
 
-                       pos = comment = 0;
+       if ( ! (curp->man || curp->mdoc)) {
+               fprintf(stderr, "%s: Not a manual\n", curp->file);
+               exit_status = MANDOCLEVEL_FATAL;
+               goto cleanup;
+       }
 
-                       /* Pass down into parsers. */
+       /* Clean up the parse routine ASTs. */
 
-                       if (man && ! man_parseln(man, lnn, ln->buf))
-                               goto bailout;
-                       if (mdoc && ! mdoc_parseln(mdoc, lnn, ln->buf))
-                               goto bailout;
-               }
+       if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {
+               assert(MANDOCLEVEL_FATAL <= exit_status);
+               goto cleanup;
        }
 
-       /* NOTE a parser may not have been assigned, yet. */
+       if (curp->man && ! man_endparse(curp->man)) {
+               assert(MANDOCLEVEL_FATAL <= exit_status);
+               goto cleanup;
+       }
 
-       if ( ! (man || mdoc)) {
-               fprintf(stderr, "%s: Not a manual\n", curp->file);
-               goto bailout;
+       assert(curp->roff);
+       if ( ! roff_endparse(curp->roff)) {
+               assert(MANDOCLEVEL_FATAL <= exit_status);
+               goto cleanup;
        }
 
-       if (mdoc && ! mdoc_endparse(mdoc))
-               goto bailout;
-       if (man && ! man_endparse(man))
-               goto bailout;
+       /*
+        * With -Wstop and warnings or errors of at least
+        * the requested level, do not produce output.
+        */
+
+       if (MANDOCLEVEL_OK != exit_status && curp->wstop)
+               goto cleanup;
 
        /* If unset, allocate output dev now (if applicable). */
 
@@ -419,12 +526,30 @@ fdesc(struct buf *blk, struct buf *ln, struct curparse *curp)
                switch (curp->outtype) {
                case (OUTT_XHTML):
                        curp->outdata = xhtml_alloc(curp->outopts);
-                       curp->outman = html_man;
-                       curp->outmdoc = html_mdoc;
-                       curp->outfree = html_free;
                        break;
                case (OUTT_HTML):
                        curp->outdata = html_alloc(curp->outopts);
+                       break;
+               case (OUTT_ASCII):
+                       curp->outdata = ascii_alloc(curp->outopts);
+                       curp->outfree = ascii_free;
+                       break;
+               case (OUTT_PDF):
+                       curp->outdata = pdf_alloc(curp->outopts);
+                       curp->outfree = pspdf_free;
+                       break;
+               case (OUTT_PS):
+                       curp->outdata = ps_alloc(curp->outopts);
+                       curp->outfree = pspdf_free;
+                       break;
+               default:
+                       break;
+               }
+
+               switch (curp->outtype) {
+               case (OUTT_HTML):
+                       /* FALLTHROUGH */
+               case (OUTT_XHTML):
                        curp->outman = html_man;
                        curp->outmdoc = html_mdoc;
                        curp->outfree = html_free;
@@ -433,44 +558,265 @@ fdesc(struct buf *blk, struct buf *ln, struct curparse *curp)
                        curp->outman = tree_man;
                        curp->outmdoc = tree_mdoc;
                        break;
-               case (OUTT_LINT):
-                       break;
-               default:
-                       curp->outdata = ascii_alloc();
+               case (OUTT_PDF):
+                       /* FALLTHROUGH */
+               case (OUTT_ASCII):
+                       /* FALLTHROUGH */
+               case (OUTT_PS):
                        curp->outman = terminal_man;
                        curp->outmdoc = terminal_mdoc;
-                       curp->outfree = terminal_free;
+                       break;
+               default:
                        break;
                }
        }
 
        /* Execute the out device, if it exists. */
 
-       if (man && curp->outman)
-               (*curp->outman)(curp->outdata, man);
-       if (mdoc && curp->outmdoc)
-               (*curp->outmdoc)(curp->outdata, mdoc);
+       if (curp->man && curp->outman)
+               (*curp->outman)(curp->outdata, curp->man);
+       if (curp->mdoc && curp->outmdoc)
+               (*curp->outmdoc)(curp->outdata, curp->mdoc);
 
  cleanup:
-       if (curp->mdoc) {
-               mdoc_free(curp->mdoc);
-               curp->mdoc = NULL;
-       }
-       if (curp->man) {
-               man_free(curp->man);
-               curp->man = NULL;
-       }
+
+       memset(&curp->regs, 0, sizeof(struct regset));
+
+       /* Reset the current-parse compilers. */
+
+       if (curp->mdoc)
+               mdoc_reset(curp->mdoc);
+       if (curp->man)
+               man_reset(curp->man);
+
+       assert(curp->roff);
+       roff_reset(curp->roff);
+
        return;
+}
+
+static void
+pdesc(struct curparse *curp)
+{
+       struct buf       blk;
+       int              with_mmap;
+
+       /*
+        * Run for each opened file; may be called more than once for
+        * each full parse sequence if the opened file is nested (i.e.,
+        * from `so').  Simply sucks in the whole file and moves into
+        * the parse phase for the file.
+        */
+
+       if ( ! read_whole_file(curp, &blk, &with_mmap)) {
+               exit_status = MANDOCLEVEL_SYSERR;
+               return;
+       }
+
+       /* Line number is per-file. */
 
- bailout:
-       with_error = 1;
-       goto cleanup;
+       curp->line = 1;
+
+       parsebuf(curp, blk, 1);
+
+       if (with_mmap)
+               munmap(blk.buf, blk.sz);
+       else
+               free(blk.buf);
 }
 
+static void
+parsebuf(struct curparse *curp, struct buf blk, int start)
+{
+       struct buf       ln;
+       int              i, of, rc;
+       int              pos; /* byte number in the ln buffer */
+       int              lnn; /* line number in the real file */
+       unsigned char    c;
 
-static int
-pset(const char *buf, int pos, struct curparse *curp,
-               struct man **man, struct mdoc **mdoc)
+       /*
+        * Main parse routine for an opened file.  This is called for
+        * each opened file and simply loops around the full input file,
+        * possibly nesting (i.e., with `so').
+        */
+
+       memset(&ln, 0, sizeof(struct buf));
+
+       lnn = curp->line; 
+       pos = 0; 
+
+       for (i = 0; i < (int)blk.sz; ) {
+               if (0 == pos && '\0' == blk.buf[i])
+                       break;
+
+               if (start)
+                       curp->line = lnn;
+
+               while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
+                       if ('\n' == blk.buf[i]) {
+                               ++i;
+                               ++lnn;
+                               break;
+                       }
+
+                       /* 
+                        * Warn about bogus characters.  If you're using
+                        * non-ASCII encoding, you're screwing your
+                        * readers.  Since I'd rather this not happen,
+                        * I'll be helpful and drop these characters so
+                        * we don't display gibberish.  Note to manual
+                        * writers: use special characters.
+                        */
+
+                       c = (unsigned char) blk.buf[i];
+
+                       if ( ! (isascii(c) && 
+                                       (isgraph(c) || isblank(c)))) {
+                               mmsg(MANDOCERR_BADCHAR, curp, 
+                                   curp->line, pos, "ignoring byte");
+                               i++;
+                               continue;
+                       }
+
+                       /* Trailing backslash = a plain char. */
+
+                       if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
+                               if (pos >= (int)ln.sz)
+                                       resize_buf(&ln, 256);
+                               ln.buf[pos++] = blk.buf[i++];
+                               continue;
+                       }
+
+                       /* Found escape & at least one other char. */
+
+                       if ('\n' == blk.buf[i + 1]) {
+                               i += 2;
+                               /* Escaped newlines are skipped over */
+                               ++lnn;
+                               continue;
+                       }
+
+                       if ('"' == blk.buf[i + 1]) {
+                               i += 2;
+                               /* Comment, skip to end of line */
+                               for (; i < (int)blk.sz; ++i) {
+                                       if ('\n' == blk.buf[i]) {
+                                               ++i;
+                                               ++lnn;
+                                               break;
+                                       }
+                               }
+
+                               /* Backout trailing whitespaces */
+                               for (; pos > 0; --pos) {
+                                       if (ln.buf[pos - 1] != ' ')
+                                               break;
+                                       if (pos > 2 && ln.buf[pos - 2] == '\\')
+                                               break;
+                               }
+                               break;
+                       }
+
+                       /* Some other escape sequence, copy & cont. */
+
+                       if (pos + 1 >= (int)ln.sz)
+                               resize_buf(&ln, 256);
+
+                       ln.buf[pos++] = blk.buf[i++];
+                       ln.buf[pos++] = blk.buf[i++];
+               }
+
+               if (pos >= (int)ln.sz)
+                       resize_buf(&ln, 256);
+
+               ln.buf[pos] = '\0';
+
+               /*
+                * A significant amount of complexity is contained by
+                * the roff preprocessor.  It's line-oriented but can be
+                * expressed on one line, so we need at times to
+                * readjust our starting point and re-run it.  The roff
+                * preprocessor can also readjust the buffers with new
+                * data, so we pass them in wholesale.
+                */
+
+               of = 0;
+
+rerun:
+               rc = roff_parseln
+                       (curp->roff, curp->line, 
+                        &ln.buf, &ln.sz, of, &of);
+
+               switch (rc) {
+               case (ROFF_REPARSE):
+                       parsebuf(curp, ln, 0);
+                       pos = 0;
+                       continue;
+               case (ROFF_APPEND):
+                       pos = strlen(ln.buf);
+                       continue;
+               case (ROFF_RERUN):
+                       goto rerun;
+               case (ROFF_IGN):
+                       pos = 0;
+                       continue;
+               case (ROFF_ERR):
+                       assert(MANDOCLEVEL_FATAL <= exit_status);
+                       break;
+               case (ROFF_SO):
+                       if (pfile(ln.buf + of, curp)) {
+                               pos = 0;
+                               continue;
+                       } else
+                               break;
+               case (ROFF_CONT):
+                       break;
+               }
+
+               /*
+                * If input parsers have not been allocated, do so now.
+                * We keep these instanced betwen parsers, but set them
+                * locally per parse routine since we can use different
+                * parsers with each one.
+                */
+
+               if ( ! (curp->man || curp->mdoc))
+                       pset(ln.buf + of, pos - of, curp);
+
+               /* 
+                * Lastly, push down into the parsers themselves.  One
+                * of these will have already been set in the pset()
+                * routine.
+                */
+
+               if (curp->man || curp->mdoc) {
+                       rc = curp->man ?
+                               man_parseln(curp->man, 
+                                       curp->line, ln.buf, of) :
+                               mdoc_parseln(curp->mdoc, 
+                                       curp->line, ln.buf, of);
+
+                       if ( ! rc) {
+                               assert(MANDOCLEVEL_FATAL <= exit_status);
+                               break;
+                       }
+               }
+
+               /* Temporary buffers typically are not full. */
+
+               if (0 == start && '\0' == blk.buf[i])
+                       break;
+
+               /* Start the next input line. */
+
+               pos = 0;
+       }
+
+       free(ln.buf);
+}
+
+static void
+pset(const char *buf, int pos, struct curparse *curp)
 {
        int              i;
 
@@ -480,53 +826,53 @@ pset(const char *buf, int pos, struct curparse *curp,
         * explicitly.  If passed as -mandoc, then try to guess from the
         * line: either skip dot-lines, use -mdoc when finding `.Dt', or
         * default to -man, which is more lenient.
+        *
+        * Separate out pmdoc/pman from mdoc/man: the first persists
+        * through all parsers, while the latter is used per-parse.
         */
 
-       if (buf[0] == '.') {
+       if ('.' == buf[0] || '\'' == buf[0]) {
                for (i = 1; buf[i]; i++)
                        if (' ' != buf[i] && '\t' != buf[i])
                                break;
-               if (0 == buf[i])
-                       return(1);
+               if ('\0' == buf[i])
+                       return;
        }
 
        switch (curp->inttype) {
        case (INTT_MDOC):
-               if (NULL == curp->mdoc) 
-                       curp->mdoc = mdoc_init(curp);
-               if (NULL == (*mdoc = curp->mdoc))
-                       return(0);
-               curp->lastmdoc = *mdoc;
-               return(1);
+               if (NULL == curp->pmdoc) 
+                       curp->pmdoc = mdoc_alloc
+                               (&curp->regs, curp, mmsg);
+               assert(curp->pmdoc);
+               curp->mdoc = curp->pmdoc;
+               return;
        case (INTT_MAN):
-               if (NULL == curp->man) 
-                       curp->man = man_init(curp);
-               if (NULL == (*man = curp->man))
-                       return(0);
-               curp->lastman = *man;
-               return(1);
+               if (NULL == curp->pman) 
+                       curp->pman = man_alloc
+                               (&curp->regs, curp, mmsg);
+               assert(curp->pman);
+               curp->man = curp->pman;
+               return;
        default:
                break;
        }
 
        if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3))  {
-               if (NULL == curp->mdoc) 
-                       curp->mdoc = mdoc_init(curp);
-               if (NULL == (*mdoc = curp->mdoc))
-                       return(0);
-               curp->lastmdoc = *mdoc;
-               return(1);
+               if (NULL == curp->pmdoc) 
+                       curp->pmdoc = mdoc_alloc
+                               (&curp->regs, curp, mmsg);
+               assert(curp->pmdoc);
+               curp->mdoc = curp->pmdoc;
+               return;
        } 
 
-       if (NULL == curp->man) 
-               curp->man = man_init(curp);
-       if (NULL == (*man = curp->man))
-               return(0);
-       curp->lastman = *man;
-       return(1);
+       if (NULL == curp->pman) 
+               curp->pman = man_alloc(&curp->regs, curp, mmsg);
+       assert(curp->pman);
+       curp->man = curp->pman;
 }
 
-
 static int
 moptions(enum intt *tflags, char *arg)
 {
@@ -545,7 +891,6 @@ moptions(enum intt *tflags, char *arg)
        return(1);
 }
 
-
 static int
 toptions(struct curparse *curp, char *arg)
 {
@@ -554,8 +899,7 @@ toptions(struct curparse *curp, char *arg)
                curp->outtype = OUTT_ASCII;
        else if (0 == strcmp(arg, "lint")) {
                curp->outtype = OUTT_LINT;
-               curp->wflags |= WARN_WALL;
-               curp->fflags |= FL_STRICT;
+               curp->wlevel  = MANDOCLEVEL_WARNING;
        }
        else if (0 == strcmp(arg, "tree"))
                curp->outtype = OUTT_TREE;
@@ -563,6 +907,10 @@ toptions(struct curparse *curp, char *arg)
                curp->outtype = OUTT_HTML;
        else if (0 == strcmp(arg, "xhtml"))
                curp->outtype = OUTT_XHTML;
+       else if (0 == strcmp(arg, "ps"))
+               curp->outtype = OUTT_PS;
+       else if (0 == strcmp(arg, "pdf"))
+               curp->outtype = OUTT_PDF;
        else {
                fprintf(stderr, "%s: Bad argument\n", arg);
                return(0);
@@ -571,44 +919,38 @@ toptions(struct curparse *curp, char *arg)
        return(1);
 }
 
-
 static int
-foptions(int *fflags, char *arg)
+woptions(struct curparse *curp, char *arg)
 {
        char            *v, *o;
-       const char      *toks[8];
+       const char      *toks[6]; 
 
-       toks[0] = "ign-scope";
-       toks[1] = "no-ign-escape";
-       toks[2] = "no-ign-macro";
-       toks[3] = "ign-errors";
-       toks[4] = "strict";
-       toks[5] = "ign-escape";
-       toks[6] = NULL;
+       toks[0] = "stop";
+       toks[1] = "all";
+       toks[2] = "warning";
+       toks[3] = "error";
+       toks[4] = "fatal";
+       toks[5] = NULL;
 
        while (*arg) {
                o = arg;
                switch (getsubopt(&arg, UNCONST(toks), &v)) {
                case (0):
-                       *fflags |= FL_IGN_SCOPE;
+                       curp->wstop = 1;
                        break;
                case (1):
-                       *fflags |= FL_NIGN_ESCAPE;
-                       break;
+                       /* FALLTHROUGH */
                case (2):
-                       *fflags |= FL_NIGN_MACRO;
+                       curp->wlevel = MANDOCLEVEL_WARNING;
                        break;
                case (3):
-                       *fflags |= FL_IGN_ERRORS;
+                       curp->wlevel = MANDOCLEVEL_ERROR;
                        break;
                case (4):
-                       *fflags |= FL_STRICT;
-                       break;
-               case (5):
-                       *fflags &= ~FL_NIGN_ESCAPE;
+                       curp->wlevel = MANDOCLEVEL_FATAL;
                        break;
                default:
-                       fprintf(stderr, "%s: Bad argument\n", o);
+                       fprintf(stderr, "-W%s: Bad argument\n", o);
                        return(0);
                }
        }
@@ -616,72 +958,29 @@ foptions(int *fflags, char *arg)
        return(1);
 }
 
-
 static int
-woptions(int *wflags, char *arg)
+mmsg(enum mandocerr t, void *arg, int ln, int col, const char *msg)
 {
-       char            *v, *o;
-       const char      *toks[3]; 
+       struct curparse *cp;
+       enum mandoclevel level;
 
-       toks[0] = "all";
-       toks[1] = "error";
-       toks[2] = NULL;
+       level = MANDOCLEVEL_FATAL;
+       while (t < mandoclimits[level])
+               /* LINTED */
+               level--;
 
-       while (*arg) {
-               o = arg;
-               switch (getsubopt(&arg, UNCONST(toks), &v)) {
-               case (0):
-                       *wflags |= WARN_WALL;
-                       break;
-               case (1):
-                       *wflags |= WARN_WERR;
-                       break;
-               default:
-                       fprintf(stderr, "%s: Bad argument\n", o);
-                       return(0);
-               }
-       }
-
-       return(1);
-}
-
-
-/* ARGSUSED */
-static int
-merr(void *arg, int line, int col, const char *msg)
-{
-       struct curparse *curp;
-
-       curp = (struct curparse *)arg;
-
-       (void)fprintf(stderr, "%s:%d:%d: error: %s\n", 
-                       curp->file, line, col + 1, msg);
-
-       with_error = 1;
-
-       return(0);
-}
-
-
-static int
-mwarn(void *arg, int line, int col, const char *msg)
-{
-       struct curparse *curp;
-
-       curp = (struct curparse *)arg;
-
-       if ( ! (curp->wflags & WARN_WALL))
+       cp = (struct curparse *)arg;
+       if (level < cp->wlevel)
                return(1);
 
-       (void)fprintf(stderr, "%s:%d:%d: warning: %s\n", 
-                       curp->file, line, col + 1, msg);
+       fprintf(stderr, "%s:%d:%d: %s: %s",
+           cp->file, ln, col + 1, mandoclevels[level], mandocerrs[t]);
+       if (msg)
+               fprintf(stderr, ": %s", msg);
+       fputc('\n', stderr);
 
-       with_warning = 1;
-       if (curp->wflags & WARN_WERR) {
-               with_error = 1;
-               return(0);
-       }
-
-       return(1);
+       if (exit_status < level)
+               exit_status = level;
+       
+       return(level < MANDOCLEVEL_FATAL);
 }
-