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Disentangle the MANDOCERR_CHILD message, which reported three
[mandoc.git] / read.c
diff --git a/read.c b/read.c
index 967d8b8024489bd3abd5da5d85b3312e44c54fa6..a60f42f970776e1abe2593ed9553ce1ab7f02341 100644 (file)
--- a/read.c
+++ b/read.c
@@ -1,7 +1,8 @@
-/*     $Id: read.c,v 1.32 2012/11/16 22:21:05 schwarze Exp $ */
+/*     $Id: read.c,v 1.57 2014/07/02 13:10:45 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010, 2012 Joerg Sonnenberger <joerg@netbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -26,6 +27,7 @@
 
 #include <assert.h>
 #include <ctype.h>
 
 #include <assert.h>
 #include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdarg.h>
 #include <stdint.h>
 #include <fcntl.h>
 #include <stdarg.h>
 #include <stdint.h>
@@ -35,19 +37,16 @@
 #include <unistd.h>
 
 #include "mandoc.h"
 #include <unistd.h>
 
 #include "mandoc.h"
+#include "mandoc_aux.h"
 #include "libmandoc.h"
 #include "mdoc.h"
 #include "man.h"
 #include "main.h"
 
 #include "libmandoc.h"
 #include "mdoc.h"
 #include "man.h"
 #include "main.h"
 
-#ifndef MAP_FILE
-#define        MAP_FILE        0
-#endif
-
 #define        REPARSE_LIMIT   1000
 
 struct buf {
 #define        REPARSE_LIMIT   1000
 
 struct buf {
-       char             *buf; /* binary input buffer */
+       char             *buf; /* binary input buffer */
        size_t            sz; /* size of binary buffer */
 };
 
        size_t            sz; /* size of binary buffer */
 };
 
@@ -55,26 +54,28 @@ struct      mparse {
        enum mandoclevel  file_status; /* status of current parse */
        enum mandoclevel  wlevel; /* ignore messages below this */
        int               line; /* line number in the file */
        enum mandoclevel  file_status; /* status of current parse */
        enum mandoclevel  wlevel; /* ignore messages below this */
        int               line; /* line number in the file */
-       enum mparset      inttype; /* which parser to use */
+       int               options; /* parser options */
        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 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) */
+       char             *sodest; /* filename pointed to by .so */
        int               reparse_count; /* finite interp. stack */
        mandocmsg         mmsg; /* warning/error message handler */
        int               reparse_count; /* finite interp. stack */
        mandocmsg         mmsg; /* warning/error message handler */
-       void             *arg; /* argument to mmsg */
-       const char       *file; 
+       const char       *file;
        struct buf       *secondary;
        char             *defos; /* default operating system */
 };
 
 static void      resize_buf(struct buf *, size_t);
 static void      mparse_buf_r(struct mparse *, struct buf, int);
        struct buf       *secondary;
        char             *defos; /* default operating system */
 };
 
 static void      resize_buf(struct buf *, size_t);
 static void      mparse_buf_r(struct mparse *, struct buf, int);
-static void      mparse_readfd_r(struct mparse *, int, const char *, int);
 static void      pset(const char *, int, struct mparse *);
 static void      pset(const char *, int, struct mparse *);
-static int       read_whole_file(const char *, int, struct buf *, int *);
+static int       read_whole_file(struct mparse *, const char *, int,
+                               struct buf *, int *);
 static void      mparse_end(struct mparse *);
 static void      mparse_end(struct mparse *);
+static void      mparse_parse_buffer(struct mparse *, struct buf,
+                       const char *);
 
 static const enum mandocerr    mandoclimits[MANDOCLEVEL_MAX] = {
        MANDOCERR_OK,
 
 static const enum mandocerr    mandoclimits[MANDOCLEVEL_MAX] = {
        MANDOCERR_OK,
@@ -92,34 +93,38 @@ static      const char * const      mandocerrs[MANDOCERR_MAX] = {
        "generic warning",
 
        /* related to the prologue */
        "generic warning",
 
        /* related to the prologue */
-       "no title in document",
-       "document title should be all caps",
+       "missing .TH macro, using \"unknown 1\"",
+       "lower case character in document title",
        "unknown manual section",
        "unknown manual volume or arch",
        "unknown manual section",
        "unknown manual volume or arch",
-       "date missing, using today's date",
+       "missing date, using today's date",
        "cannot parse date, using it verbatim",
        "prologue macros out of order",
        "duplicate prologue macro",
        "cannot parse date, using it verbatim",
        "prologue macros out of order",
        "duplicate prologue macro",
-       "macro not allowed in prologue",
-       "macro not allowed in body",
+       "incomplete prologue, terminated by",
+       "skipping prologue macro in body",
 
        /* related to document structure */
        ".so is fragile, better use ln(1)",
 
        /* related to document structure */
        ".so is fragile, better use ln(1)",
-       "NAME section must come first",
+       "no document body",
+       "content before first section header",
+       "first section is not \"NAME\"",
        "bad NAME section contents",
        "sections out of conventional order",
        "bad NAME section contents",
        "sections out of conventional order",
-       "duplicate section name",
-       "section not in conventional manual section",
+       "duplicate section title",
+       "unexpected section",
 
        /* related to macros and nesting */
 
        /* related to macros and nesting */
-       "skipping obsolete macro",
+       "obsolete macro",
        "skipping paragraph macro",
        "moving paragraph macro out of list",
        "skipping no-space macro",
        "blocks badly nested",
        "skipping paragraph macro",
        "moving paragraph macro out of list",
        "skipping no-space macro",
        "blocks badly nested",
-       "child violates parent syntax",
        "nested displays are not portable",
        "nested displays are not portable",
-       "already in literal mode",
+       "moving content out of list",
+       ".Vt block has child macro",
+       "fill mode already enabled, skipping .fi",
+       "fill mode already disabled, skipping .nf",
        "line scope broken",
 
        /* related to missing macro arguments */
        "line scope broken",
 
        /* related to missing macro arguments */
@@ -129,7 +134,6 @@ static      const char * const      mandocerrs[MANDOCERR_MAX] = {
        "list type must come first",
        "tag lists require a width argument",
        "missing font type",
        "list type must come first",
        "tag lists require a width argument",
        "missing font type",
-       "skipping end of block that is not open",
 
        /* related to bad macro arguments */
        "skipping argument",
 
        /* related to bad macro arguments */
        "skipping argument",
@@ -150,9 +154,6 @@ static      const char * const      mandocerrs[MANDOCERR_MAX] = {
        "bad escape sequence",
        "unterminated quoted string",
 
        "bad escape sequence",
        "unterminated quoted string",
 
-       /* related to equations */
-       "unexpected literal in equation",
-       
        "generic error",
 
        /* related to equations */
        "generic error",
 
        /* related to equations */
@@ -176,10 +177,12 @@ static    const char * const      mandocerrs[MANDOCERR_MAX] = {
        "skipping bad character",
        "escaped character not allowed in a name",
        "manual name not yet set",
        "skipping bad character",
        "escaped character not allowed in a name",
        "manual name not yet set",
-       "skipping text before the first section header",
+       "skipping text before first section header",
        "skipping unknown macro",
        "NOT IMPLEMENTED, please use groff: skipping request",
        "argument count wrong",
        "skipping unknown macro",
        "NOT IMPLEMENTED, please use groff: skipping request",
        "argument count wrong",
+       "skipping invalid content in .Rs block",
+       "skipping column outside column list",
        "skipping end of block that is not open",
        "missing end of block",
        "scope open on exit",
        "skipping end of block that is not open",
        "missing end of block",
        "scope open on exit",
@@ -187,12 +190,13 @@ static    const char * const      mandocerrs[MANDOCERR_MAX] = {
        "macro requires line argument(s)",
        "macro requires body argument(s)",
        "macro requires argument(s)",
        "macro requires line argument(s)",
        "macro requires body argument(s)",
        "macro requires argument(s)",
+       "request requires a numeric argument",
        "missing list type",
        "line argument(s) will be lost",
        "missing list type",
        "line argument(s) will be lost",
-       "body argument(s) will be lost",
 
        "generic fatal error",
 
 
        "generic fatal error",
 
+       "input too large",
        "not a manual",
        "column syntax is inconsistent",
        "NOT IMPLEMENTED: .Bd -file",
        "not a manual",
        "column syntax is inconsistent",
        "NOT IMPLEMENTED: .Bd -file",
@@ -200,9 +204,14 @@ static     const char * const      mandocerrs[MANDOCERR_MAX] = {
        "child violates parent syntax",
        "argument count wrong, violates syntax",
        "NOT IMPLEMENTED: .so with absolute path or \"..\"",
        "child violates parent syntax",
        "argument count wrong, violates syntax",
        "NOT IMPLEMENTED: .so with absolute path or \"..\"",
-       "no document body",
+       ".so request failed",
        "no document prologue",
        "static buffer exhausted",
        "no document prologue",
        "static buffer exhausted",
+
+       /* system errors */
+       NULL,
+       "cannot stat file",
+       "cannot read file",
 };
 
 static const char * const      mandoclevels[MANDOCLEVEL_MAX] = {
 };
 
 static const char * const      mandoclevels[MANDOCLEVEL_MAX] = {
@@ -215,6 +224,7 @@ static      const char * const      mandoclevels[MANDOCLEVEL_MAX] = {
        "SYSERR"
 };
 
        "SYSERR"
 };
 
+
 static void
 resize_buf(struct buf *buf, size_t initial)
 {
 static void
 resize_buf(struct buf *buf, size_t initial)
 {
@@ -247,35 +257,36 @@ pset(const char *buf, int pos, struct mparse *curp)
                        return;
        }
 
                        return;
        }
 
-       switch (curp->inttype) {
-       case (MPARSE_MDOC):
-               if (NULL == curp->pmdoc) 
-                       curp->pmdoc = mdoc_alloc(curp->roff, curp,
-                                       curp->defos);
+       if (MPARSE_MDOC & curp->options) {
+               if (NULL == curp->pmdoc)
+                       curp->pmdoc = mdoc_alloc(
+                           curp->roff, curp, curp->defos,
+                           MPARSE_QUICK & curp->options ? 1 : 0);
                assert(curp->pmdoc);
                curp->mdoc = curp->pmdoc;
                return;
                assert(curp->pmdoc);
                curp->mdoc = curp->pmdoc;
                return;
-       case (MPARSE_MAN):
-               if (NULL == curp->pman) 
-                       curp->pman = man_alloc(curp->roff, curp);
+       } else if (MPARSE_MAN & curp->options) {
+               if (NULL == curp->pman)
+                       curp->pman = man_alloc(curp->roff, curp,
+                           MPARSE_QUICK & curp->options ? 1 : 0);
                assert(curp->pman);
                curp->man = curp->pman;
                return;
                assert(curp->pman);
                curp->man = curp->pman;
                return;
-       default:
-               break;
        }
 
        if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3))  {
        }
 
        if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3))  {
-               if (NULL == curp->pmdoc) 
-                       curp->pmdoc = mdoc_alloc(curp->roff, curp,
-                                       curp->defos);
+               if (NULL == curp->pmdoc)
+                       curp->pmdoc = mdoc_alloc(
+                           curp->roff, curp, curp->defos,
+                           MPARSE_QUICK & curp->options ? 1 : 0);
                assert(curp->pmdoc);
                curp->mdoc = curp->pmdoc;
                return;
                assert(curp->pmdoc);
                curp->mdoc = curp->pmdoc;
                return;
-       } 
+       }
 
 
-       if (NULL == curp->pman) 
-               curp->pman = man_alloc(curp->roff, curp);
+       if (NULL == curp->pman)
+               curp->pman = man_alloc(curp->roff, curp,
+                   MPARSE_QUICK & curp->options ? 1 : 0);
        assert(curp->pman);
        curp->man = curp->pman;
 }
        assert(curp->pman);
        curp->man = curp->pman;
 }
@@ -298,8 +309,8 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
 
        memset(&ln, 0, sizeof(struct buf));
 
 
        memset(&ln, 0, sizeof(struct buf));
 
-       lnn = curp->line; 
-       pos = 0; 
+       lnn = curp->line;
+       pos = 0;
 
        for (i = 0; i < (int)blk.sz; ) {
                if (0 == pos && '\0' == blk.buf[i])
 
        for (i = 0; i < (int)blk.sz; ) {
                if (0 == pos && '\0' == blk.buf[i])
@@ -327,7 +338,16 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
                                break;
                        }
 
                                break;
                        }
 
-                       /* 
+                       /*
+                        * Make sure we have space for at least
+                        * one backslash and one other character
+                        * and the trailing NUL byte.
+                        */
+
+                       if (pos + 2 >= (int)ln.sz)
+                               resize_buf(&ln, 256);
+
+                       /*
                         * Warn about bogus characters.  If you're using
                         * non-ASCII encoding, you're screwing your
                         * readers.  Since I'd rather this not happen,
                         * Warn about bogus characters.  If you're using
                         * non-ASCII encoding, you're screwing your
                         * readers.  Since I'd rather this not happen,
@@ -338,13 +358,11 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
 
                        c = (unsigned char) blk.buf[i];
 
 
                        c = (unsigned char) blk.buf[i];
 
-                       if ( ! (isascii(c) && 
-                                       (isgraph(c) || isblank(c)))) {
+                       if ( ! (isascii(c) &&
+                           (isgraph(c) || isblank(c)))) {
                                mandoc_msg(MANDOCERR_BADCHAR, curp,
                                mandoc_msg(MANDOCERR_BADCHAR, curp,
-                                               curp->line, pos, NULL);
+                                   curp->line, pos, NULL);
                                i++;
                                i++;
-                               if (pos >= (int)ln.sz)
-                                       resize_buf(&ln, 256);
                                ln.buf[pos++] = '?';
                                continue;
                        }
                                ln.buf[pos++] = '?';
                                continue;
                        }
@@ -352,8 +370,6 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
                        /* Trailing backslash = a plain char. */
 
                        if ('\\' != blk.buf[i] || i + 1 == (int)blk.sz) {
                        /* 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;
                        }
                                ln.buf[pos++] = blk.buf[i++];
                                continue;
                        }
@@ -395,16 +411,26 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
                                break;
                        }
 
                                break;
                        }
 
-                       /* Some other escape sequence, copy & cont. */
+                       /* Catch escaped bogus characters. */
 
 
-                       if (pos + 1 >= (int)ln.sz)
-                               resize_buf(&ln, 256);
+                       c = (unsigned char) blk.buf[i+1];
+
+                       if ( ! (isascii(c) &&
+                           (isgraph(c) || isblank(c)))) {
+                               mandoc_msg(MANDOCERR_BADCHAR, curp,
+                                   curp->line, pos, NULL);
+                               i += 2;
+                               ln.buf[pos++] = '?';
+                               continue;
+                       }
+
+                       /* Some other escape sequence, copy & cont. */
 
                        ln.buf[pos++] = blk.buf[i++];
                        ln.buf[pos++] = blk.buf[i++];
                }
 
 
                        ln.buf[pos++] = blk.buf[i++];
                        ln.buf[pos++] = blk.buf[i++];
                }
 
-               if (pos >= (int)ln.sz)
+               if (pos >= (int)ln.sz)
                        resize_buf(&ln, 256);
 
                ln.buf[pos] = '\0';
                        resize_buf(&ln, 256);
 
                ln.buf[pos] = '\0';
@@ -427,13 +453,12 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
                 */
 
                if (curp->secondary) {
                 */
 
                if (curp->secondary) {
-                       curp->secondary->buf = 
-                               mandoc_realloc
-                               (curp->secondary->buf, 
-                                curp->secondary->sz + pos + 2);
-                       memcpy(curp->secondary->buf + 
-                                       curp->secondary->sz, 
-                                       ln.buf, pos);
+                       curp->secondary->buf = mandoc_realloc(
+                           curp->secondary->buf,
+                           curp->secondary->sz + pos + 2);
+                       memcpy(curp->secondary->buf +
+                           curp->secondary->sz,
+                           ln.buf, pos);
                        curp->secondary->sz += pos;
                        curp->secondary->buf
                                [curp->secondary->sz] = '\n';
                        curp->secondary->sz += pos;
                        curp->secondary->buf
                                [curp->secondary->sz] = '\n';
@@ -442,41 +467,50 @@ mparse_buf_r(struct mparse *curp, struct buf blk, int start)
                                [curp->secondary->sz] = '\0';
                }
 rerun:
                                [curp->secondary->sz] = '\0';
                }
 rerun:
-               rr = roff_parseln
-                       (curp->roff, curp->line, 
-                        &ln.buf, &ln.sz, of, &of);
+               rr = roff_parseln(curp->roff, curp->line,
+                   &ln.buf, &ln.sz, of, &of);
 
                switch (rr) {
 
                switch (rr) {
-               case (ROFF_REPARSE):
+               case ROFF_REPARSE:
                        if (REPARSE_LIMIT >= ++curp->reparse_count)
                                mparse_buf_r(curp, ln, 0);
                        else
                                mandoc_msg(MANDOCERR_ROFFLOOP, curp,
                        if (REPARSE_LIMIT >= ++curp->reparse_count)
                                mparse_buf_r(curp, ln, 0);
                        else
                                mandoc_msg(MANDOCERR_ROFFLOOP, curp,
-                                       curp->line, pos, NULL);
+                                   curp->line, pos, NULL);
                        pos = 0;
                        continue;
                        pos = 0;
                        continue;
-               case (ROFF_APPEND):
+               case ROFF_APPEND:
                        pos = (int)strlen(ln.buf);
                        continue;
                        pos = (int)strlen(ln.buf);
                        continue;
-               case (ROFF_RERUN):
+               case ROFF_RERUN:
                        goto rerun;
                        goto rerun;
-               case (ROFF_IGN):
+               case ROFF_IGN:
                        pos = 0;
                        continue;
                        pos = 0;
                        continue;
-               case (ROFF_ERR):
+               case ROFF_ERR:
                        assert(MANDOCLEVEL_FATAL <= curp->file_status);
                        break;
                        assert(MANDOCLEVEL_FATAL <= curp->file_status);
                        break;
-               case (ROFF_SO):
+               case ROFF_SO:
+                       if (0 == (MPARSE_SO & curp->options) &&
+                           (i >= (int)blk.sz || '\0' == blk.buf[i])) {
+                               curp->sodest = mandoc_strdup(ln.buf + of);
+                               free(ln.buf);
+                               return;
+                       }
                        /*
                         * We remove `so' clauses from our lookaside
                         * buffer because we're going to descend into
                         * the file recursively.
                         */
                        /*
                         * We remove `so' clauses from our lookaside
                         * buffer because we're going to descend into
                         * the file recursively.
                         */
-                       if (curp->secondary) 
+                       if (curp->secondary)
                                curp->secondary->sz -= pos + 1;
                                curp->secondary->sz -= pos + 1;
-                       mparse_readfd_r(curp, -1, ln.buf + of, 1);
-                       if (MANDOCLEVEL_FATAL <= curp->file_status)
+                       mparse_readfd(curp, -1, ln.buf + of);
+                       if (MANDOCLEVEL_FATAL <= curp->file_status) {
+                               mandoc_vmsg(MANDOCERR_SO_FAIL,
+                                   curp, curp->line, pos,
+                                   ".so %s", ln.buf + of);
                                break;
                                break;
+                       }
                        pos = 0;
                        continue;
                default:
                        pos = 0;
                        continue;
                default:
@@ -501,7 +535,7 @@ rerun:
                if ( ! (curp->man || curp->mdoc))
                        pset(ln.buf + of, pos - of, curp);
 
                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.
                 * Lastly, push down into the parsers themselves.  One
                 * of these will have already been set in the pset()
                 * routine.
@@ -517,28 +551,29 @@ rerun:
                if (ROFF_TBL == rr)
                        while (NULL != (span = roff_span(curp->roff))) {
                                rc = curp->man ?
                if (ROFF_TBL == rr)
                        while (NULL != (span = roff_span(curp->roff))) {
                                rc = curp->man ?
-                                       man_addspan(curp->man, span) :
-                                       mdoc_addspan(curp->mdoc, span);
+                                   man_addspan(curp->man, span) :
+                                   mdoc_addspan(curp->mdoc, span);
                                if (0 == rc)
                                        break;
                        }
                else if (ROFF_EQN == rr)
                                if (0 == rc)
                                        break;
                        }
                else if (ROFF_EQN == rr)
-                       rc = curp->mdoc ? 
-                               mdoc_addeqn(curp->mdoc, 
-                                       roff_eqn(curp->roff)) :
-                               man_addeqn(curp->man,
-                                       roff_eqn(curp->roff));
+                       rc = curp->mdoc ?
+                           mdoc_addeqn(curp->mdoc,
+                               roff_eqn(curp->roff)) :
+                           man_addeqn(curp->man,
+                               roff_eqn(curp->roff));
                else if (curp->man || curp->mdoc)
                        rc = curp->man ?
                else 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);
+                           man_parseln(curp->man,
+                               curp->line, ln.buf, of) :
+                           mdoc_parseln(curp->mdoc,
+                               curp->line, ln.buf, of);
 
                if (0 == rc) {
                        assert(MANDOCLEVEL_FATAL <= curp->file_status);
                        break;
 
                if (0 == rc) {
                        assert(MANDOCLEVEL_FATAL <= curp->file_status);
                        break;
-               }
+               } else if (2 == rc)
+                       break;
 
                /* Temporary buffers typically are not full. */
 
 
                /* Temporary buffers typically are not full. */
 
@@ -554,7 +589,8 @@ rerun:
 }
 
 static int
 }
 
 static int
-read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
+read_whole_file(struct mparse *curp, const char *file, int fd,
+               struct buf *fb, int *with_mmap)
 {
        size_t           off;
        ssize_t          ssz;
 {
        size_t           off;
        ssize_t          ssz;
@@ -562,7 +598,10 @@ read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
 #ifdef HAVE_MMAP
        struct stat      st;
        if (-1 == fstat(fd, &st)) {
 #ifdef HAVE_MMAP
        struct stat      st;
        if (-1 == fstat(fd, &st)) {
-               perror(file);
+               curp->file_status = MANDOCLEVEL_SYSERR;
+               if (curp->mmsg)
+                       (*curp->mmsg)(MANDOCERR_SYSSTAT, curp->file_status,
+                           file, 0, 0, strerror(errno));
                return(0);
        }
 
                return(0);
        }
 
@@ -575,13 +614,15 @@ read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
 
        if (S_ISREG(st.st_mode)) {
                if (st.st_size >= (1U << 31)) {
 
        if (S_ISREG(st.st_mode)) {
                if (st.st_size >= (1U << 31)) {
-                       fprintf(stderr, "%s: input too large\n", file);
+                       curp->file_status = MANDOCLEVEL_FATAL;
+                       if (curp->mmsg)
+                               (*curp->mmsg)(MANDOCERR_TOOLARGE,
+                                   curp->file_status, file, 0, 0, NULL);
                        return(0);
                }
                *with_mmap = 1;
                fb->sz = (size_t)st.st_size;
                        return(0);
                }
                *with_mmap = 1;
                fb->sz = (size_t)st.st_size;
-               fb->buf = mmap(NULL, fb->sz, PROT_READ, 
-                               MAP_FILE|MAP_SHARED, fd, 0);
+               fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);
                if (fb->buf != MAP_FAILED)
                        return(1);
        }
                if (fb->buf != MAP_FAILED)
                        return(1);
        }
@@ -599,7 +640,11 @@ read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
        for (;;) {
                if (off == fb->sz) {
                        if (fb->sz == (1U << 31)) {
        for (;;) {
                if (off == fb->sz) {
                        if (fb->sz == (1U << 31)) {
-                               fprintf(stderr, "%s: input too large\n", file);
+                               curp->file_status = MANDOCLEVEL_FATAL;
+                               if (curp->mmsg)
+                                       (*curp->mmsg)(MANDOCERR_TOOLARGE,
+                                           curp->file_status,
+                                           file, 0, 0, NULL);
                                break;
                        }
                        resize_buf(fb, 65536);
                                break;
                        }
                        resize_buf(fb, 65536);
@@ -610,7 +655,11 @@ read_whole_file(const char *file, int fd, struct buf *fb, int *with_mmap)
                        return(1);
                }
                if (ssz == -1) {
                        return(1);
                }
                if (ssz == -1) {
-                       perror(file);
+                       curp->file_status = MANDOCLEVEL_SYSERR;
+                       if (curp->mmsg)
+                               (*curp->mmsg)(MANDOCERR_SYSREAD,
+                                   curp->file_status, file, 0, 0,
+                                   strerror(errno));
                        break;
                }
                off += (size_t)ssz;
                        break;
                }
                off += (size_t)ssz;
@@ -638,8 +687,8 @@ mparse_end(struct mparse *curp)
                return;
        }
 
                return;
        }
 
-       if ( ! (curp->man || curp->mdoc)) {
-               mandoc_msg(MANDOCERR_NOTMANUAL, curp, 1, 0, NULL);
+       if ( ! (curp->mdoc || curp->man || curp->sodest)) {
+               mandoc_msg(MANDOCERR_NOTMANUAL, curp, 0, 0, NULL);
                curp->file_status = MANDOCLEVEL_FATAL;
                return;
        }
                curp->file_status = MANDOCLEVEL_FATAL;
                return;
        }
@@ -648,19 +697,25 @@ mparse_end(struct mparse *curp)
 }
 
 static void
 }
 
 static void
-mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file,
-               int re)
+mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
 {
        const char      *svfile;
 {
        const char      *svfile;
+       static int       recursion_depth;
+
+       if (64 < recursion_depth) {
+               mandoc_msg(MANDOCERR_ROFFLOOP, curp, curp->line, 0, NULL);
+               return;
+       }
 
        /* Line number is per-file. */
        svfile = curp->file;
        curp->file = file;
        curp->line = 1;
 
        /* Line number is per-file. */
        svfile = curp->file;
        curp->file = file;
        curp->line = 1;
+       recursion_depth++;
 
        mparse_buf_r(curp, blk, 1);
 
 
        mparse_buf_r(curp, blk, 1);
 
-       if (0 == re && MANDOCLEVEL_FATAL > curp->file_status)
+       if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)
                mparse_end(curp);
 
        curp->file = svfile;
                mparse_end(curp);
 
        curp->file = svfile;
@@ -675,22 +730,25 @@ mparse_readmem(struct mparse *curp, const void *buf, size_t len,
        blk.buf = UNCONST(buf);
        blk.sz = len;
 
        blk.buf = UNCONST(buf);
        blk.sz = len;
 
-       mparse_parse_buffer(curp, blk, file, 0);
+       mparse_parse_buffer(curp, blk, file);
        return(curp->file_status);
 }
 
        return(curp->file_status);
 }
 
-static void
-mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
+enum mandoclevel
+mparse_readfd(struct mparse *curp, int fd, const char *file)
 {
        struct buf       blk;
        int              with_mmap;
 
 {
        struct buf       blk;
        int              with_mmap;
 
-       if (-1 == fd)
-               if (-1 == (fd = open(file, O_RDONLY, 0))) {
-                       perror(file);
-                       curp->file_status = MANDOCLEVEL_SYSERR;
-                       return;
-               }
+       if (-1 == fd && -1 == (fd = open(file, O_RDONLY, 0))) {
+               curp->file_status = MANDOCLEVEL_SYSERR;
+               if (curp->mmsg)
+                       (*curp->mmsg)(MANDOCERR_SYSOPEN,
+                           curp->file_status,
+                           file, 0, 0, strerror(errno));
+               goto out;
+       }
+
        /*
         * Run for each opened file; may be called more than once for
         * each full parse sequence if the opened file is nested (i.e.,
        /*
         * Run for each opened file; may be called more than once for
         * each full parse sequence if the opened file is nested (i.e.,
@@ -698,12 +756,10 @@ mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
         * the parse phase for the file.
         */
 
         * the parse phase for the file.
         */
 
-       if ( ! read_whole_file(file, fd, &blk, &with_mmap)) {
-               curp->file_status = MANDOCLEVEL_SYSERR;
-               return;
-       }
+       if ( ! read_whole_file(curp, file, fd, &blk, &with_mmap))
+               goto out;
 
 
-       mparse_parse_buffer(curp, blk, file, re);
+       mparse_parse_buffer(curp, blk, file);
 
 #ifdef HAVE_MMAP
        if (with_mmap)
 
 #ifdef HAVE_MMAP
        if (with_mmap)
@@ -714,19 +770,13 @@ mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
 
        if (STDIN_FILENO != fd && -1 == close(fd))
                perror(file);
 
        if (STDIN_FILENO != fd && -1 == close(fd))
                perror(file);
-}
-
-enum mandoclevel
-mparse_readfd(struct mparse *curp, int fd, const char *file)
-{
-
-       mparse_readfd_r(curp, fd, file, 0);
+out:
        return(curp->file_status);
 }
 
 struct mparse *
        return(curp->file_status);
 }
 
 struct mparse *
-mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,
-               mandocmsg mmsg, void *arg, char *defos)
+mparse_alloc(int options, enum mandoclevel wlevel,
+               mandocmsg mmsg, char *defos)
 {
        struct mparse   *curp;
 
 {
        struct mparse   *curp;
 
@@ -734,13 +784,12 @@ mparse_alloc(enum mparset inttype, enum mandoclevel wlevel,
 
        curp = mandoc_calloc(1, sizeof(struct mparse));
 
 
        curp = mandoc_calloc(1, sizeof(struct mparse));
 
+       curp->options = options;
        curp->wlevel = wlevel;
        curp->mmsg = mmsg;
        curp->wlevel = wlevel;
        curp->mmsg = mmsg;
-       curp->arg = arg;
-       curp->inttype = inttype;
        curp->defos = defos;
 
        curp->defos = defos;
 
-       curp->roff = roff_alloc(curp);
+       curp->roff = roff_alloc(curp, options);
        return(curp);
 }
 
        return(curp);
 }
 
@@ -760,6 +809,9 @@ mparse_reset(struct mparse *curp)
        curp->file_status = MANDOCLEVEL_OK;
        curp->mdoc = NULL;
        curp->man = NULL;
        curp->file_status = MANDOCLEVEL_OK;
        curp->mdoc = NULL;
        curp->man = NULL;
+
+       free(curp->sodest);
+       curp->sodest = NULL;
 }
 
 void
 }
 
 void
@@ -776,13 +828,20 @@ mparse_free(struct mparse *curp)
                free(curp->secondary->buf);
 
        free(curp->secondary);
                free(curp->secondary->buf);
 
        free(curp->secondary);
+       free(curp->sodest);
        free(curp);
 }
 
 void
        free(curp);
 }
 
 void
-mparse_result(struct mparse *curp, struct mdoc **mdoc, struct man **man)
+mparse_result(struct mparse *curp,
+       struct mdoc **mdoc, struct man **man, char **sodest)
 {
 
 {
 
+       if (sodest && NULL != (*sodest = curp->sodest)) {
+               *mdoc = NULL;
+               *man = NULL;
+               return;
+       }
        if (mdoc)
                *mdoc = curp->mdoc;
        if (man)
        if (mdoc)
                *mdoc = curp->mdoc;
        if (man)
@@ -797,14 +856,14 @@ mandoc_vmsg(enum mandocerr t, struct mparse *m,
        va_list          ap;
 
        va_start(ap, fmt);
        va_list          ap;
 
        va_start(ap, fmt);
-       vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+       (void)vsnprintf(buf, sizeof(buf), fmt, ap);
        va_end(ap);
 
        mandoc_msg(t, m, ln, pos, buf);
 }
 
 void
        va_end(ap);
 
        mandoc_msg(t, m, ln, pos, buf);
 }
 
 void
-mandoc_msg(enum mandocerr er, struct mparse *m, 
+mandoc_msg(enum mandocerr er, struct mparse *m,
                int ln, int col, const char *msg)
 {
        enum mandoclevel level;
                int ln, int col, const char *msg)
 {
        enum mandoclevel level;
A git conversion mirror of mandoc.bsd.lv