-/* $Id: mdoc.c,v 1.141 2010/05/31 10:28:04 kristaps Exp $ */
+/* $Id: mdoc.c,v 1.275 2020/04/06 10:16:17 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2010, 2012-2018, 2020 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
*
* 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
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Top level and utility functions of the mdoc(7) parser for mandoc(1).
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include <sys/types.h>
#include <string.h>
#include <time.h>
+#include "mandoc_aux.h"
#include "mandoc.h"
-#include "libmdoc.h"
+#include "roff.h"
+#include "mdoc.h"
#include "libmandoc.h"
+#include "roff_int.h"
+#include "libmdoc.h"
-const char *const __mdoc_macronames[MDOC_MAX] = {
- "Ap", "Dd", "Dt", "Os",
- "Sh", "Ss", "Pp", "D1",
- "Dl", "Bd", "Ed", "Bl",
- "El", "It", "Ad", "An",
- "Ar", "Cd", "Cm", "Dv",
- "Er", "Ev", "Ex", "Fa",
- "Fd", "Fl", "Fn", "Ft",
- "Ic", "In", "Li", "Nd",
- "Nm", "Op", "Ot", "Pa",
- "Rv", "St", "Va", "Vt",
- /* LINTED */
- "Xr", "%A", "%B", "%D",
- /* LINTED */
- "%I", "%J", "%N", "%O",
- /* LINTED */
- "%P", "%R", "%T", "%V",
- "Ac", "Ao", "Aq", "At",
- "Bc", "Bf", "Bo", "Bq",
- "Bsx", "Bx", "Db", "Dc",
- "Do", "Dq", "Ec", "Ef",
- "Em", "Eo", "Fx", "Ms",
- "No", "Ns", "Nx", "Ox",
- "Pc", "Pf", "Po", "Pq",
- "Qc", "Ql", "Qo", "Qq",
- "Re", "Rs", "Sc", "So",
- "Sq", "Sm", "Sx", "Sy",
- "Tn", "Ux", "Xc", "Xo",
- "Fo", "Fc", "Oo", "Oc",
- "Bk", "Ek", "Bt", "Hf",
- "Fr", "Ud", "Lb", "Lp",
- "Lk", "Mt", "Brq", "Bro",
- /* LINTED */
- "Brc", "%C", "Es", "En",
- /* LINTED */
- "Dx", "%Q", "br", "sp",
- /* LINTED */
- "%U", "Ta"
- };
-
-const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
+const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
"split", "nosplit", "ragged",
- "unfilled", "literal", "file",
- "offset", "bullet", "dash",
- "hyphen", "item", "enum",
- "tag", "diag", "hang",
- "ohang", "inset", "column",
- "width", "compact", "std",
+ "unfilled", "literal", "file",
+ "offset", "bullet", "dash",
+ "hyphen", "item", "enum",
+ "tag", "diag", "hang",
+ "ohang", "inset", "column",
+ "width", "compact", "std",
"filled", "words", "emphasis",
"symbolic", "nested", "centered"
- };
-
-const char * const *mdoc_macronames = __mdoc_macronames;
+};
const char * const *mdoc_argnames = __mdoc_argnames;
-static void mdoc_node_free(struct mdoc_node *);
-static void mdoc_node_unlink(struct mdoc *,
- struct mdoc_node *);
-static void mdoc_free1(struct mdoc *);
-static void mdoc_alloc1(struct mdoc *);
-static struct mdoc_node *node_alloc(struct mdoc *, int, int,
- enum mdoct, enum mdoc_type);
-static int node_append(struct mdoc *,
- struct mdoc_node *);
-static int mdoc_ptext(struct mdoc *, int, char *, int);
-static int mdoc_pmacro(struct mdoc *, int, char *, int);
-static int macrowarn(struct mdoc *, int,
- const char *, int);
-
-
-const struct mdoc_node *
-mdoc_node(const struct mdoc *m)
-{
-
- return(MDOC_HALT & m->flags ? NULL : m->first);
-}
-
-
-const struct mdoc_meta *
-mdoc_meta(const struct mdoc *m)
-{
-
- return(MDOC_HALT & m->flags ? NULL : &m->meta);
-}
-
-
-/*
- * Frees volatile resources (parse tree, meta-data, fields).
- */
-static void
-mdoc_free1(struct mdoc *mdoc)
-{
-
- if (mdoc->first)
- mdoc_node_delete(mdoc, mdoc->first);
- if (mdoc->meta.title)
- free(mdoc->meta.title);
- if (mdoc->meta.os)
- free(mdoc->meta.os);
- if (mdoc->meta.name)
- free(mdoc->meta.name);
- if (mdoc->meta.arch)
- free(mdoc->meta.arch);
- if (mdoc->meta.vol)
- free(mdoc->meta.vol);
- if (mdoc->meta.msec)
- free(mdoc->meta.msec);
-}
-
-
-/*
- * Allocate all volatile resources (parse tree, meta-data, fields).
- */
-static void
-mdoc_alloc1(struct mdoc *mdoc)
-{
-
- memset(&mdoc->meta, 0, sizeof(struct mdoc_meta));
- mdoc->flags = 0;
- mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
- mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node));
- mdoc->first = mdoc->last;
- mdoc->last->type = MDOC_ROOT;
- mdoc->next = MDOC_NEXT_CHILD;
-}
-
-
-/*
- * Free up volatile resources (see mdoc_free1()) then re-initialises the
- * data with mdoc_alloc1(). After invocation, parse data has been reset
- * and the parser is ready for re-invocation on a new tree; however,
- * cross-parse non-volatile data is kept intact.
- */
-void
-mdoc_reset(struct mdoc *mdoc)
-{
-
- mdoc_free1(mdoc);
- mdoc_alloc1(mdoc);
-}
-
-
-/*
- * Completely free up all volatile and non-volatile parse resources.
- * After invocation, the pointer is no longer usable.
- */
-void
-mdoc_free(struct mdoc *mdoc)
-{
-
- mdoc_free1(mdoc);
- free(mdoc);
-}
-
-
-/*
- * Allocate volatile and non-volatile parse resources.
- */
-struct mdoc *
-mdoc_alloc(void *data, int pflags, mandocmsg msg)
-{
- struct mdoc *p;
-
- p = mandoc_calloc(1, sizeof(struct mdoc));
-
- p->msg = msg;
- p->data = data;
- p->pflags = pflags;
-
- mdoc_hash_init();
- mdoc_alloc1(p);
- return(p);
-}
-
-
-/*
- * Climb back up the parse tree, validating open scopes. Mostly calls
- * through to macro_end() in macro.c.
- */
-int
-mdoc_endparse(struct mdoc *m)
-{
-
- if (MDOC_HALT & m->flags)
- return(0);
- else if (mdoc_macroend(m))
- return(1);
- m->flags |= MDOC_HALT;
- return(0);
-}
+static int mdoc_ptext(struct roff_man *, int, char *, int);
+static int mdoc_pmacro(struct roff_man *, int, char *, int);
/*
* the macro (mdoc_pmacro()) or text parser (mdoc_ptext()).
*/
int
-mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs)
+mdoc_parseln(struct roff_man *mdoc, int ln, char *buf, int offs)
{
- if (MDOC_HALT & m->flags)
- return(0);
+ if (mdoc->last->type != ROFFT_EQN || ln > mdoc->last->line)
+ mdoc->flags |= MDOC_NEWLINE;
- m->flags |= MDOC_NEWLINE;
- return(('.' == buf[offs] || '\'' == buf[offs]) ?
- mdoc_pmacro(m, ln, buf, offs) :
- mdoc_ptext(m, ln, buf, offs));
+ /*
+ * Let the roff nS register switch SYNOPSIS mode early,
+ * such that the parser knows at all times
+ * whether this mode is on or off.
+ * Note that this mode is also switched by the Sh macro.
+ */
+ if (roff_getreg(mdoc->roff, "nS"))
+ mdoc->flags |= MDOC_SYNOPSIS;
+ else
+ mdoc->flags &= ~MDOC_SYNOPSIS;
+
+ return roff_getcontrol(mdoc->roff, buf, &offs) ?
+ mdoc_pmacro(mdoc, ln, buf, offs) :
+ mdoc_ptext(mdoc, ln, buf, offs);
}
-
-int
-mdoc_vmsg(struct mdoc *mdoc, enum mandocerr t,
- int ln, int pos, const char *fmt, ...)
+void
+mdoc_tail_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok)
{
- char buf[256];
- va_list ap;
-
- va_start(ap, fmt);
- vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
+ struct roff_node *p;
- return((*mdoc->msg)(t, mdoc->data, ln, pos, buf));
+ p = roff_node_alloc(mdoc, line, pos, ROFFT_TAIL, tok);
+ roff_node_append(mdoc, p);
+ mdoc->next = ROFF_NEXT_CHILD;
}
-
-int
-mdoc_macro(struct mdoc *m, enum mdoct tok,
- int ln, int pp, int *pos, char *buf)
+struct roff_node *
+mdoc_endbody_alloc(struct roff_man *mdoc, int line, int pos,
+ enum roff_tok tok, struct roff_node *body)
{
- assert(tok < MDOC_MAX);
-
- /* If we're in the body, deny prologue calls. */
-
- if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
- MDOC_PBODY & m->flags)
- return(mdoc_pmsg(m, ln, pp, MANDOCERR_BADBODY));
-
- /* If we're in the prologue, deny "body" macros. */
-
- if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
- ! (MDOC_PBODY & m->flags)) {
- if ( ! mdoc_pmsg(m, ln, pp, MANDOCERR_BADPROLOG))
- return(0);
- if (NULL == m->meta.title)
- m->meta.title = mandoc_strdup("UNKNOWN");
- if (NULL == m->meta.vol)
- m->meta.vol = mandoc_strdup("LOCAL");
- if (NULL == m->meta.os)
- m->meta.os = mandoc_strdup("LOCAL");
- if (0 == m->meta.date)
- m->meta.date = time(NULL);
- m->flags |= MDOC_PBODY;
- }
-
- return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
+ struct roff_node *p;
+
+ body->flags |= NODE_ENDED;
+ body->parent->flags |= NODE_ENDED;
+ p = roff_node_alloc(mdoc, line, pos, ROFFT_BODY, tok);
+ p->body = body;
+ p->norm = body->norm;
+ p->end = ENDBODY_SPACE;
+ roff_node_append(mdoc, p);
+ mdoc->next = ROFF_NEXT_SIBLING;
+ return p;
}
-
-static int
-node_append(struct mdoc *mdoc, struct mdoc_node *p)
+struct roff_node *
+mdoc_block_alloc(struct roff_man *mdoc, int line, int pos,
+ enum roff_tok tok, struct mdoc_arg *args)
{
+ struct roff_node *p;
- assert(mdoc->last);
- assert(mdoc->first);
- assert(MDOC_ROOT != p->type);
-
- switch (mdoc->next) {
- case (MDOC_NEXT_SIBLING):
- mdoc->last->next = p;
- p->prev = mdoc->last;
- p->parent = mdoc->last->parent;
- break;
- case (MDOC_NEXT_CHILD):
- mdoc->last->child = p;
- p->parent = mdoc->last;
- break;
- default:
- abort();
- /* NOTREACHED */
- }
-
- p->parent->nchild++;
-
- if ( ! mdoc_valid_pre(mdoc, p))
- return(0);
- if ( ! mdoc_action_pre(mdoc, p))
- return(0);
-
- switch (p->type) {
- case (MDOC_HEAD):
- assert(MDOC_BLOCK == p->parent->type);
- p->parent->head = p;
- break;
- case (MDOC_TAIL):
- assert(MDOC_BLOCK == p->parent->type);
- p->parent->tail = p;
- break;
- case (MDOC_BODY):
- assert(MDOC_BLOCK == p->parent->type);
- p->parent->body = p;
- break;
- default:
- break;
- }
-
- mdoc->last = p;
+ p = roff_node_alloc(mdoc, line, pos, ROFFT_BLOCK, tok);
+ p->args = args;
+ if (p->args)
+ (args->refcnt)++;
- switch (p->type) {
- case (MDOC_TEXT):
- if ( ! mdoc_valid_post(mdoc))
- return(0);
- if ( ! mdoc_action_post(mdoc))
- return(0);
+ switch (tok) {
+ case MDOC_Bd:
+ case MDOC_Bf:
+ case MDOC_Bl:
+ case MDOC_En:
+ case MDOC_Rs:
+ p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
break;
default:
break;
}
-
- return(1);
-}
-
-
-static struct mdoc_node *
-node_alloc(struct mdoc *m, int line, int pos,
- enum mdoct tok, enum mdoc_type type)
-{
- struct mdoc_node *p;
-
- p = mandoc_calloc(1, sizeof(struct mdoc_node));
- p->sec = m->lastsec;
- p->line = line;
- p->pos = pos;
- p->tok = tok;
- p->type = type;
- if (MDOC_NEWLINE & m->flags)
- p->flags |= MDOC_LINE;
- m->flags &= ~MDOC_NEWLINE;
- return(p);
-}
-
-
-int
-mdoc_tail_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
-{
- struct mdoc_node *p;
-
- p = node_alloc(m, line, pos, tok, MDOC_TAIL);
- if ( ! node_append(m, p))
- return(0);
- m->next = MDOC_NEXT_CHILD;
- return(1);
-}
-
-
-int
-mdoc_head_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
-{
- struct mdoc_node *p;
-
- assert(m->first);
- assert(m->last);
-
- p = node_alloc(m, line, pos, tok, MDOC_HEAD);
- if ( ! node_append(m, p))
- return(0);
- m->next = MDOC_NEXT_CHILD;
- return(1);
+ roff_node_append(mdoc, p);
+ mdoc->next = ROFF_NEXT_CHILD;
+ return p;
}
-
-int
-mdoc_body_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
-{
- struct mdoc_node *p;
-
- p = node_alloc(m, line, pos, tok, MDOC_BODY);
- if ( ! node_append(m, p))
- return(0);
- m->next = MDOC_NEXT_CHILD;
- return(1);
-}
-
-
-int
-mdoc_block_alloc(struct mdoc *m, int line, int pos,
- enum mdoct tok, struct mdoc_arg *args)
-{
- struct mdoc_node *p;
-
- p = node_alloc(m, line, pos, tok, MDOC_BLOCK);
- p->args = args;
- if (p->args)
- (args->refcnt)++;
- if ( ! node_append(m, p))
- return(0);
- m->next = MDOC_NEXT_CHILD;
- return(1);
-}
-
-
-int
-mdoc_elem_alloc(struct mdoc *m, int line, int pos,
- enum mdoct tok, struct mdoc_arg *args)
+void
+mdoc_elem_alloc(struct roff_man *mdoc, int line, int pos,
+ enum roff_tok tok, struct mdoc_arg *args)
{
- struct mdoc_node *p;
+ struct roff_node *p;
- p = node_alloc(m, line, pos, tok, MDOC_ELEM);
+ p = roff_node_alloc(mdoc, line, pos, ROFFT_ELEM, tok);
p->args = args;
if (p->args)
(args->refcnt)++;
- if ( ! node_append(m, p))
- return(0);
- m->next = MDOC_NEXT_CHILD;
- return(1);
-}
-
-
-int
-mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
-{
- struct mdoc_node *n;
- size_t sv, len;
-
- len = strlen(p);
-
- n = node_alloc(m, line, pos, MDOC_MAX, MDOC_TEXT);
- n->string = mandoc_malloc(len + 1);
- sv = strlcpy(n->string, p, len + 1);
-
- /* Prohibit truncation. */
- assert(sv < len + 1);
-
- if ( ! node_append(m, n))
- return(0);
-
- m->next = MDOC_NEXT_SIBLING;
- return(1);
-}
-
-
-void
-mdoc_node_free(struct mdoc_node *p)
-{
- if (p->string)
- free(p->string);
- if (p->args)
- mdoc_argv_free(p->args);
- free(p);
-}
-
-
-static void
-mdoc_node_unlink(struct mdoc *m, struct mdoc_node *n)
-{
-
- /* Adjust siblings. */
-
- if (n->prev)
- n->prev->next = n->next;
- if (n->next)
- n->next->prev = n->prev;
-
- /* Adjust parent. */
-
- if (n->parent) {
- n->parent->nchild--;
- if (n->parent->child == n)
- n->parent->child = n->prev ? n->prev : n->next;
- }
-
- /* Adjust parse point, if applicable. */
-
- if (m && m->last == n) {
- if (n->prev) {
- m->last = n->prev;
- m->next = MDOC_NEXT_SIBLING;
- } else {
- m->last = n->parent;
- m->next = MDOC_NEXT_CHILD;
- }
- }
-
- if (m && m->first == n)
- m->first = NULL;
-}
-
-
-void
-mdoc_node_delete(struct mdoc *m, struct mdoc_node *p)
-{
-
- while (p->child) {
- assert(p->nchild);
- mdoc_node_delete(m, p->child);
+ switch (tok) {
+ case MDOC_An:
+ p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
+ break;
+ default:
+ break;
}
- assert(0 == p->nchild);
-
- mdoc_node_unlink(m, p);
- mdoc_node_free(p);
+ roff_node_append(mdoc, p);
+ mdoc->next = ROFF_NEXT_CHILD;
}
-
/*
* Parse free-form text, that is, a line that does not begin with the
* control character.
*/
static int
-mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
+mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs)
{
- char *c, *ws, *end;
-
- /* Ignore bogus comments. */
+ struct roff_node *n;
+ const char *cp, *sp;
+ char *c, *ws, *end;
- if ('\\' == buf[offs] &&
- '.' == buf[offs + 1] &&
- '"' == buf[offs + 2])
- return(mdoc_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
+ n = mdoc->last;
- /* No text before an initial macro. */
+ /*
+ * If a column list contains plain text, assume an implicit item
+ * macro. This can happen one or more times at the beginning
+ * of such a list, intermixed with non-It mdoc macros and with
+ * nodes generated on the roff level, for example by tbl.
+ */
- if (SEC_NONE == m->lastnamed)
- return(mdoc_pmsg(m, line, offs, MANDOCERR_NOTEXT));
+ if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY &&
+ n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) ||
+ (n->parent != NULL && n->parent->tok == MDOC_Bl &&
+ n->parent->norm->Bl.type == LIST_column)) {
+ mdoc->flags |= MDOC_FREECOL;
+ (*mdoc_macro(MDOC_It)->fp)(mdoc, MDOC_It,
+ line, offs, &offs, buf);
+ return 1;
+ }
/*
* Search for the beginning of unescaped trailing whitespace (ws)
ws = NULL;
for (c = end = buf + offs; *c; c++) {
switch (*c) {
- case '-':
- if (mandoc_hyph(buf + offs, c))
- *c = ASCII_HYPH;
- break;
case ' ':
if (NULL == ws)
ws = c;
* Strip trailing tabs in literal context only;
* outside, they affect the next line.
*/
- if (MDOC_LITERAL & m->flags)
+ if (mdoc->flags & ROFF_NOFILL)
continue;
break;
case '\\':
*end = '\0';
if (ws)
- if ( ! mdoc_pmsg(m, line, (int)(ws-buf), MANDOCERR_EOLNSPACE))
- return(0);
-
- if ('\0' == buf[offs] && ! (MDOC_LITERAL & m->flags)) {
- if ( ! mdoc_pmsg(m, line, (int)(c-buf), MANDOCERR_NOBLANKLN))
- return(0);
-
- /*
- * Insert a `Pp' in the case of a blank line. Technically,
- * blank lines aren't allowed, but enough manuals assume this
- * behaviour that we want to work around it.
- */
- if ( ! mdoc_elem_alloc(m, line, offs, MDOC_Pp, NULL))
- return(0);
-
- m->next = MDOC_NEXT_SIBLING;
- return(1);
+ mandoc_msg(MANDOCERR_SPACE_EOL, line, (int)(ws - buf), NULL);
+
+ /*
+ * Blank lines are allowed in no-fill mode
+ * and cancel preceding \c,
+ * but add a single vertical space elsewhere.
+ */
+
+ if (buf[offs] == '\0' && (mdoc->flags & ROFF_NOFILL) == 0) {
+ switch (mdoc->last->type) {
+ case ROFFT_TEXT:
+ sp = mdoc->last->string;
+ cp = end = strchr(sp, '\0') - 2;
+ if (cp < sp || cp[0] != '\\' || cp[1] != 'c')
+ break;
+ while (cp > sp && cp[-1] == '\\')
+ cp--;
+ if ((end - cp) % 2)
+ break;
+ *end = '\0';
+ return 1;
+ default:
+ break;
+ }
+ mandoc_msg(MANDOCERR_FI_BLANK, line, (int)(c - buf), NULL);
+ roff_elem_alloc(mdoc, line, offs, ROFF_sp);
+ mdoc->last->flags |= NODE_VALID | NODE_ENDED;
+ mdoc->next = ROFF_NEXT_SIBLING;
+ return 1;
}
- if ( ! mdoc_word_alloc(m, line, offs, buf+offs))
- return(0);
+ roff_word_alloc(mdoc, line, offs, buf+offs);
- if (MDOC_LITERAL & m->flags)
- return(1);
+ if (mdoc->flags & ROFF_NOFILL)
+ return 1;
/*
* End-of-sentence check. If the last character is an unescaped
assert(buf < end);
if (mandoc_eos(buf+offs, (size_t)(end-buf-offs)))
- m->last->flags |= MDOC_EOS;
-
- return(1);
-}
-
-
-static int
-macrowarn(struct mdoc *m, int ln, const char *buf, int offs)
-{
- int rc;
+ mdoc->last->flags |= NODE_EOS;
- rc = mdoc_vmsg(m, MANDOCERR_MACRO, ln, offs,
- "unknown macro: %s%s",
- buf, strlen(buf) > 3 ? "..." : "");
+ for (c = buf + offs; c != NULL; c = strchr(c + 1, '.')) {
+ if (c - buf < offs + 2)
+ continue;
+ if (end - c < 3)
+ break;
+ if (c[1] != ' ' ||
+ isalnum((unsigned char)c[-2]) == 0 ||
+ isalnum((unsigned char)c[-1]) == 0 ||
+ (c[-2] == 'n' && c[-1] == 'c') ||
+ (c[-2] == 'v' && c[-1] == 's'))
+ continue;
+ c += 2;
+ if (*c == ' ')
+ c++;
+ if (*c == ' ')
+ c++;
+ if (isupper((unsigned char)(*c)))
+ mandoc_msg(MANDOCERR_EOS, line, (int)(c - buf), NULL);
+ }
- /* FIXME: logic should be in driver. */
- return(MDOC_IGN_MACRO & m->pflags ? rc : 0);
+ return 1;
}
-
/*
* Parse a macro line, that is, a line beginning with the control
* character.
*/
-int
-mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
+static int
+mdoc_pmacro(struct roff_man *mdoc, int ln, char *buf, int offs)
{
- enum mdoct tok;
- int i, j, sv;
- char mac[5];
-
- /* Empty lines are ignored. */
-
- offs++;
-
- if ('\0' == buf[offs])
- return(1);
-
- i = offs;
+ struct roff_node *n;
+ const char *cp;
+ size_t sz;
+ enum roff_tok tok;
+ int sv;
+
+ /* Determine the line macro. */
+
+ sv = offs;
+ tok = TOKEN_NONE;
+ for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++)
+ offs++;
+ if (sz == 2 || sz == 3)
+ tok = roffhash_find(mdoc->mdocmac, buf + sv, sz);
+ if (tok == TOKEN_NONE) {
+ mandoc_msg(MANDOCERR_MACRO, ln, sv, "%s", buf + sv - 1);
+ return 1;
+ }
- /* Accept whitespace after the initial control char. */
+ /* Skip a leading escape sequence or tab. */
- if (' ' == buf[i]) {
- i++;
- while (buf[i] && ' ' == buf[i])
- i++;
- if ('\0' == buf[i])
- return(1);
+ switch (buf[offs]) {
+ case '\\':
+ cp = buf + offs + 1;
+ mandoc_escape(&cp, NULL, NULL);
+ offs = cp - buf;
+ break;
+ case '\t':
+ offs++;
+ break;
+ default:
+ break;
}
- sv = i;
+ /* Jump to the next non-whitespace word. */
- /* Copy the first word into a nil-terminated buffer. */
+ while (buf[offs] == ' ')
+ offs++;
- for (j = 0; j < 4; j++, i++) {
- if ('\0' == (mac[j] = buf[i]))
- break;
- else if (' ' == buf[i])
- break;
+ /*
+ * Trailing whitespace. Note that tabs are allowed to be passed
+ * into the parser as "text", so we only warn about spaces here.
+ */
- /* Check for invalid characters. */
+ if ('\0' == buf[offs] && ' ' == buf[offs - 1])
+ mandoc_msg(MANDOCERR_SPACE_EOL, ln, offs - 1, NULL);
- if (isgraph((u_char)buf[i]))
- continue;
- if ( ! mdoc_pmsg(m, ln, i, MANDOCERR_BADCHAR))
- return(0);
- i--;
+ /*
+ * If an initial or transparent macro or a list invocation,
+ * divert directly into macro processing.
+ */
+
+ n = mdoc->last;
+ if (n == NULL || tok == MDOC_It || tok == MDOC_El ||
+ roff_tok_transparent(tok)) {
+ (*mdoc_macro(tok)->fp)(mdoc, tok, ln, sv, &offs, buf);
+ return 1;
}
- mac[j] = '\0';
-
- if (j == 4 || j < 2) {
- if ( ! macrowarn(m, ln, mac, sv))
- goto err;
- return(1);
- }
-
- if (MDOC_MAX == (tok = mdoc_hash_find(mac))) {
- if ( ! macrowarn(m, ln, mac, sv))
- goto err;
- return(1);
+ /*
+ * If a column list contains a non-It macro, assume an implicit
+ * item macro. This can happen one or more times at the
+ * beginning of such a list, intermixed with text lines and
+ * with nodes generated on the roff level, for example by tbl.
+ */
+
+ if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY &&
+ n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) ||
+ (n->parent != NULL && n->parent->tok == MDOC_Bl &&
+ n->parent->norm->Bl.type == LIST_column)) {
+ mdoc->flags |= MDOC_FREECOL;
+ (*mdoc_macro(MDOC_It)->fp)(mdoc, MDOC_It, ln, sv, &sv, buf);
+ return 1;
}
- /* The macro is sane. Jump to the next word. */
+ /* Normal processing of a macro. */
- while (buf[i] && ' ' == buf[i])
- i++;
+ (*mdoc_macro(tok)->fp)(mdoc, tok, ln, sv, &offs, buf);
- /*
- * Trailing whitespace. Note that tabs are allowed to be passed
- * into the parser as "text", so we only warn about spaces here.
- */
+ /* In quick mode (for mandocdb), abort after the NAME section. */
- if ('\0' == buf[i] && ' ' == buf[i - 1])
- if ( ! mdoc_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
- goto err;
+ if (mdoc->quick && MDOC_Sh == tok &&
+ SEC_NAME != mdoc->last->sec)
+ return 2;
- /*
- * Begin recursive parse sequence. Since we're at the start of
- * the line, we don't need to do callable/parseable checks.
- */
- if ( ! mdoc_macro(m, tok, ln, sv, &i, buf))
- goto err;
+ return 1;
+}
- return(1);
+enum mdelim
+mdoc_isdelim(const char *p)
+{
-err: /* Error out. */
+ if ('\0' == p[0])
+ return DELIM_NONE;
+
+ if ('\0' == p[1])
+ switch (p[0]) {
+ case '(':
+ case '[':
+ return DELIM_OPEN;
+ case '|':
+ return DELIM_MIDDLE;
+ case '.':
+ case ',':
+ case ';':
+ case ':':
+ case '?':
+ case '!':
+ case ')':
+ case ']':
+ return DELIM_CLOSE;
+ default:
+ return DELIM_NONE;
+ }
- m->flags |= MDOC_HALT;
- return(0);
-}
+ if ('\\' != p[0])
+ return DELIM_NONE;
+ if (0 == strcmp(p + 1, "."))
+ return DELIM_CLOSE;
+ if (0 == strcmp(p + 1, "fR|\\fP"))
+ return DELIM_MIDDLE;
+ return DELIM_NONE;
+}
git.ckatri.com / mandoc.git / blobdiff