Plan9 has a man(7) implementation that looks extremely archaic,

[mandoc.git] / main.c

diff --git a/main.c b/main.c
index 0f6994f8db9b81cfea68f173ea2375eb323b1fc0..5e5080cca4c45b9d69e8b75e2de85ced0df086e1 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,4 +1,4 @@
-/*     $Id: main.c,v 1.117 2010/12/05 15:49:37 kristaps Exp $ */
+/*     $Id: main.c,v 1.127 2010/12/29 14:38:14 kristaps Exp $ */

 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>


@@ -41,6 +41,7 @@
 #define        MAP_FILE        0
 #endif
 
 #define        MAP_FILE        0
 #endif
 

+#define        REPARSE_LIMIT   1000

 #define        UNCONST(a)      ((void *)(uintptr_t)(const void *)(a))
 
 /* FIXME: Intel's compiler?  LLVM?  pcc?  */
 #define        UNCONST(a)      ((void *)(uintptr_t)(const void *)(a))
 
 /* FIXME: Intel's compiler?  LLVM?  pcc?  */


@@ -89,6 +90,7 @@ struct        curparse {
        struct mdoc      *mdoc;         /* mdoc parser */
        struct roff      *roff;         /* roff parser (!NULL) */
        struct regset     regs;         /* roff registers */
        struct mdoc      *mdoc;         /* mdoc parser */
        struct roff      *roff;         /* roff parser (!NULL) */
        struct regset     regs;         /* roff registers */

+       int               reparse_count; /* finite interpolation stack */

        enum outt         outtype;      /* which output to use */
        out_mdoc          outmdoc;      /* mdoc output ptr */
        out_man           outman;       /* man output ptr */
        enum outt         outtype;      /* which output to use */
        out_mdoc          outmdoc;      /* mdoc output ptr */
        out_man           outman;       /* man output ptr */


@@ -122,72 +124,87 @@ static    const char * const      mandocerrs[MANDOCERR_MAX] = {
 
        "generic warning",
 
 
        "generic warning",
 

+       /* related to the prologue */
+       "no title in document",
+       "document title should be all caps",
+       "unknown manual section",
+       "cannot parse date argument",
+       "prologue macros out of order",
+       "duplicate prologue macro",
+       "macro not allowed in prologue",
+       "macro not allowed in body",
+
+       /* related to document structure */

        ".so is fragile, better use ln(1)",
        ".so is fragile, better use ln(1)",

-       "text should be uppercase",
+       "NAME section must come first",
+       "bad NAME section contents",
+       "manual name not yet set",

        "sections out of conventional order",
        "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",
+       "duplicate section name",

        "section not in conventional manual section",
        "section not in conventional manual section",

-       "end of line whitespace",
+
+       /* related to macros and nesting */
+       "skipping obsolete macro",
+       "skipping paragraph macro",

        "blocks badly nested",
        "blocks badly nested",

+       "child violates parent syntax",
+       "nested displays are not portable",
+       "already in literal mode",

 
 

-       "generic error",
+       /* related to missing macro arguments */
+       "skipping empty macro",
+       "missing display type",
+       "list type must come first",
+       "tag lists require a width argument",
+       "missing font type",

 
 

-       "NAME section must come first",
+       /* related to bad macro arguments */
+       "skipping argument",
+       "duplicate argument",
+       "duplicate display type",
+       "duplicate list type",
+       "unknown AT&T UNIX version",

        "bad Boolean value",
        "bad Boolean value",

-       "child violates parent syntax",
-       "displays may not be nested",
-       "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",
+       "unknown font",
+       "unknown standard specifier",
+       "bad width argument",
+
+       /* related to plain text */
+       "blank line in non-literal context",
+       "tab in non-literal context",
+       "end of line whitespace",

        "bad comment style",
        "bad comment style",

-       "unknown macro will be lost",
+       "unknown escape sequence",
+       "unterminated quoted string",
+
+       "generic error",
+
+       "bad table syntax",
+       "bad table option",
+       "bad table layout",
+       "no table layout cells specified",
+       "input stack limit exceeded, infinite loop?",
+       "skipping bad character",
+       "skipping text before the first section header",
+       "skipping unknown macro",

        "NOT IMPLEMENTED: skipping request",
        "line scope broken",
        "argument count wrong",
        "NOT IMPLEMENTED: skipping request",
        "line scope broken",
        "argument count wrong",

-       "request scope close w/none open",
-       "scope already open",
+       "skipping end of block that is not open",
+       "missing end of block",

        "scope open on exit",
        "uname(3) system call failed",
        "macro requires line argument(s)",
        "macro requires body argument(s)",
        "macro requires argument(s)",
        "scope open on exit",
        "uname(3) system call failed",
        "macro requires line argument(s)",
        "macro requires body argument(s)",
        "macro requires argument(s)",

-       "no title in document",

        "missing list type",
        "missing list type",

-       "missing display type",
-       "missing font type",

        "line argument(s) will be lost",
        "body argument(s) will be lost",
        "line argument(s) will be lost",
        "body argument(s) will be lost",

-       "paragraph macro ignored",

 
        "generic fatal error",
 
        "column syntax is inconsistent",
 
        "generic fatal error",
 
        "column syntax is inconsistent",

-       "unsupported display type",
-       "blocks badly nested",
-       "no such block is open",
+       "NOT IMPLEMENTED: .Bd -file",

        "line scope broken, syntax violated",
        "argument count wrong, violates syntax",
        "child violates parent syntax",
        "line scope broken, syntax violated",
        "argument count wrong, violates syntax",
        "child violates parent syntax",


@@ -376,7 +393,7 @@ static void
 resize_buf(struct buf *buf, size_t initial)
 {
 
 resize_buf(struct buf *buf, size_t initial)
 {
 

-       buf->sz = buf->sz ? 2 * buf->sz : initial;
+       buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;

        buf->buf = realloc(buf->buf, buf->sz);
        if (NULL == buf->buf) {
                perror(NULL);
        buf->buf = realloc(buf->buf, buf->sz);
        if (NULL == buf->buf) {
                perror(NULL);


@@ -655,8 +672,10 @@ parsebuf(struct curparse *curp, struct buf blk, int start)
                if (0 == pos && '\0' == blk.buf[i])
                        break;
 
                if (0 == pos && '\0' == blk.buf[i])
                        break;
 

-               if (start)
+               if (start) {

                        curp->line = lnn;
                        curp->line = lnn;

+                       curp->reparse_count = 0;
+               }

 
                while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
                        if ('\n' == blk.buf[i]) {
 
                while (i < (int)blk.sz && (start || '\0' != blk.buf[i])) {
                        if ('\n' == blk.buf[i]) {


@@ -755,7 +774,11 @@ rerun:
 
                switch (rr) {
                case (ROFF_REPARSE):
 
                switch (rr) {
                case (ROFF_REPARSE):

-                       parsebuf(curp, ln, 0);
+                       if (REPARSE_LIMIT >= ++curp->reparse_count)
+                               parsebuf(curp, ln, 0);
+                       else
+                               mmsg(MANDOCERR_ROFFLOOP, curp, 
+                                   curp->line, pos, NULL);

                        pos = 0;
                        continue;
                case (ROFF_APPEND):
                        pos = 0;
                        continue;
                case (ROFF_APPEND):