-/* $Id: mdoc.c,v 1.78 2009/06/15 09:55:43 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).
*/
+#include "config.h"
+
+#include <sys/types.h>
+
#include <assert.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-
+#include <time.h>
+
+#include "mandoc_aux.h"
+#include "mandoc.h"
+#include "roff.h"
+#include "mdoc.h"
+#include "libmandoc.h"
+#include "roff_int.h"
#include "libmdoc.h"
-enum merr {
- ENOCALL,
- EBODYPROL,
- EPROLBODY,
- ESPACE,
- ETEXTPROL,
- ENOBLANK,
- EMALLOC
-};
-
-const char *const __mdoc_macronames[MDOC_MAX] = {
- "\\\"", "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", "Ap",
- "Lp", "Lk", "Mt", "Brq",
- /* LINTED */
- "Bro", "Brc", "\%C", "Es",
- /* LINTED */
- "En", "Dx", "\%Q"
- };
-
-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"
- };
-
-const char * const *mdoc_macronames = __mdoc_macronames;
+ "symbolic", "nested", "centered"
+};
const char * const *mdoc_argnames = __mdoc_argnames;
-static void mdoc_free1(struct mdoc *);
-static int mdoc_alloc1(struct mdoc *);
-static struct mdoc_node *node_alloc(struct mdoc *, int, int,
- int, enum mdoc_type);
-static int node_append(struct mdoc *,
- struct mdoc_node *);
-static int parsetext(struct mdoc *, int, char *);
-static int parsemacro(struct mdoc *, int, char *);
-static int macrowarn(struct mdoc *, int, const char *);
-static int perr(struct mdoc *, int, int, enum merr);
-
-#define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
-
-/*
- * Get the first (root) node of the parse tree.
- */
-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);
-}
-
-
-static void
-mdoc_free1(struct mdoc *mdoc)
-{
-
- if (mdoc->first)
- mdoc_node_freelist(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);
-}
-
-
-static int
-mdoc_alloc1(struct mdoc *mdoc)
-{
-
- bzero(&mdoc->meta, sizeof(struct mdoc_meta));
- mdoc->flags = 0;
- mdoc->lastnamed = mdoc->lastsec = 0;
- mdoc->last = calloc(1, sizeof(struct mdoc_node));
- if (NULL == mdoc->last)
- return(0);
-
- mdoc->first = mdoc->last;
- mdoc->last->type = MDOC_ROOT;
- mdoc->next = MDOC_NEXT_CHILD;
- return(1);
-}
-
-
-/*
- * Free up all resources contributed by a parse: the node tree,
- * meta-data and so on. Then reallocate the root node for another
- * parse.
- */
-int
-mdoc_reset(struct mdoc *mdoc)
-{
-
- mdoc_free1(mdoc);
- return(mdoc_alloc1(mdoc));
-}
-
-
-/*
- * Completely free up all resources.
- */
-void
-mdoc_free(struct mdoc *mdoc)
-{
-
- mdoc_free1(mdoc);
- if (mdoc->htab)
- mdoc_hash_free(mdoc->htab);
- free(mdoc);
-}
-
-
-struct mdoc *
-mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
-{
- struct mdoc *p;
-
- if (NULL == (p = calloc(1, sizeof(struct mdoc))))
- return(NULL);
- if (cb)
- (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
-
- p->data = data;
- p->pflags = pflags;
-
- if (NULL == (p->htab = mdoc_hash_alloc())) {
- free(p);
- return(NULL);
- } else if (mdoc_alloc1(p))
- return(p);
-
- free(p);
- return(NULL);
-}
-
-
-/*
- * 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);
/*
* Main parse routine. Parses a single line -- really just hands off to
- * the macro or text parser.
+ * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()).
*/
int
-mdoc_parseln(struct mdoc *m, int ln, char *buf)
+mdoc_parseln(struct roff_man *mdoc, int ln, char *buf, int offs)
{
- /* If in error-mode, then we parse no more. */
+ if (mdoc->last->type != ROFFT_EQN || ln > mdoc->last->line)
+ mdoc->flags |= MDOC_NEWLINE;
- if (MDOC_HALT & m->flags)
- return(0);
+ /*
+ * 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('.' == *buf ? parsemacro(m, ln, buf) :
- parsetext(m, ln, buf));
+ return roff_getcontrol(mdoc->roff, buf, &offs) ?
+ mdoc_pmacro(mdoc, ln, buf, offs) :
+ mdoc_ptext(mdoc, ln, buf, offs);
}
-
void
-mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
+mdoc_tail_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok)
{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_msg)
- return;
+ struct roff_node *p;
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- (*mdoc->cb.mdoc_msg)(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_verr(struct mdoc *mdoc, int ln, int pos,
- const char *fmt, ...)
+struct roff_node *
+mdoc_endbody_alloc(struct roff_man *mdoc, int line, int pos,
+ enum roff_tok tok, struct roff_node *body)
{
- char buf[256];
- va_list ap;
+ struct roff_node *p;
- if (NULL == mdoc->cb.mdoc_err)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
-}
-
-
-int
-mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
- enum mdoc_warn type, const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_warn)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
-}
-
-
-int
-mdoc_nwarn(struct mdoc *mdoc, const struct mdoc_node *node, enum mdoc_warn type,
- const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_warn)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_warn)(mdoc->data, node->line, node->pos, type,
- buf));
-}
-
-int
-mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node, const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_err)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_err)(mdoc->data, node->line, node->pos, buf));
-}
-
-
-int
-mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type, const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_warn)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
- mdoc->last->pos, type, buf));
-}
-
-
-int
-mdoc_err(struct mdoc *mdoc, const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_err)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_err)(mdoc->data, mdoc->last->line,
- mdoc->last->pos, buf));
+ 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;
}
-
-void
-mdoc_msg(struct mdoc *mdoc, const char *fmt, ...)
+struct roff_node *
+mdoc_block_alloc(struct roff_man *mdoc, int line, int pos,
+ enum roff_tok tok, struct mdoc_arg *args)
{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_msg)
- return;
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- (*mdoc->cb.mdoc_msg)(mdoc->data, mdoc->last->line, mdoc->last->pos,
- buf);
-}
-
-
-void
-mdoc_pmsg(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_msg)
- return;
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- (*mdoc->cb.mdoc_msg)(mdoc->data, line, pos, buf);
-}
-
-
-int
-mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type,
- const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_warn)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, type, buf));
-}
-
-int
-mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
-{
- char buf[256];
- va_list ap;
-
- if (NULL == mdoc->cb.mdoc_err)
- return(0);
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf));
-}
-
-
-int
-mdoc_macro(struct mdoc *m, int tok,
- int ln, int pp, int *pos, char *buf)
-{
-
- /* FIXME - these should happen during validation. */
-
- if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
- SEC_PROLOGUE != m->lastnamed)
- return(perr(m, ln, pp, EPROLBODY));
+ struct roff_node *p;
- if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
- SEC_PROLOGUE == m->lastnamed)
- return(perr(m, ln, pp, EBODYPROL));
-
- if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
- return(perr(m, ln, pp, ENOCALL));
-
- return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
-}
-
-
-static int
-perr(struct mdoc *m, int line, int pos, enum merr type)
-{
- char *p;
+ p = roff_node_alloc(mdoc, line, pos, ROFFT_BLOCK, tok);
+ p->args = args;
+ if (p->args)
+ (args->refcnt)++;
- p = NULL;
- switch (type) {
- case (ENOCALL):
- p = "not callable";
- break;
- case (EPROLBODY):
- p = "macro disallowed in document body";
- break;
- case (EBODYPROL):
- p = "macro disallowed in document prologue";
- break;
- case (EMALLOC):
- p = "memory exhausted";
+ 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;
- case (ETEXTPROL):
- p = "text disallowed in document prologue";
- break;
- case (ENOBLANK):
- p = "blank lines disallowed in non-literal contexts";
- break;
- case (ESPACE):
- p = "whitespace disallowed after delimiter";
+ default:
break;
}
- assert(p);
- return(mdoc_perr(m, line, pos, p));
+ roff_node_append(mdoc, p);
+ mdoc->next = ROFF_NEXT_CHILD;
+ return p;
}
-
-static int
-node_append(struct mdoc *mdoc, struct mdoc_node *p)
+void
+mdoc_elem_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 */
- }
-
- 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_ELEM, 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_An:
+ p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
break;
default:
break;
}
-
- return(1);
+ roff_node_append(mdoc, p);
+ mdoc->next = ROFF_NEXT_CHILD;
}
-
-static struct mdoc_node *
-node_alloc(struct mdoc *mdoc, int line,
- int pos, int tok, enum mdoc_type type)
-{
- struct mdoc_node *p;
-
- if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
- (void)verr(mdoc, EMALLOC);
- return(NULL);
+/*
+ * Parse free-form text, that is, a line that does not begin with the
+ * control character.
+ */
+static int
+mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs)
+{
+ struct roff_node *n;
+ const char *cp, *sp;
+ char *c, *ws, *end;
+
+ n = mdoc->last;
+
+ /*
+ * 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 ((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;
}
- p->sec = mdoc->lastsec;
- p->line = line;
- p->pos = pos;
- p->tok = tok;
- if (MDOC_TEXT != (p->type = type))
- assert(p->tok >= 0);
-
- return(p);
-}
-
-
-int
-mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
-{
- struct mdoc_node *p;
-
- p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
- if (NULL == p)
- return(0);
- return(node_append(mdoc, p));
-}
-
-
-int
-mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
-{
- struct mdoc_node *p;
-
- assert(mdoc->first);
- assert(mdoc->last);
-
- p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
- if (NULL == p)
- return(0);
- return(node_append(mdoc, p));
-}
-
-
-int
-mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
-{
- struct mdoc_node *p;
-
- p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
- if (NULL == p)
- return(0);
- return(node_append(mdoc, p));
-}
-
-
-int
-mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
- int tok, struct mdoc_arg *args)
-{
- struct mdoc_node *p;
-
- p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
- if (NULL == p)
- return(0);
- p->args = args;
- if (p->args)
- (args->refcnt)++;
- return(node_append(mdoc, p));
-}
-
-
-int
-mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
- int tok, struct mdoc_arg *args)
-{
- struct mdoc_node *p;
-
- p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
- if (NULL == p)
- return(0);
- p->args = args;
- if (p->args)
- (args->refcnt)++;
- return(node_append(mdoc, p));
-}
-
-
-int
-mdoc_word_alloc(struct mdoc *mdoc,
- int line, int pos, const char *word)
-{
- struct mdoc_node *p;
-
- p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
- if (NULL == p)
- return(0);
- if (NULL == (p->string = strdup(word))) {
- (void)verr(mdoc, EMALLOC);
- return(0);
+ /*
+ * Search for the beginning of unescaped trailing whitespace (ws)
+ * and for the first character not to be output (end).
+ */
+
+ /* FIXME: replace with strcspn(). */
+ ws = NULL;
+ for (c = end = buf + offs; *c; c++) {
+ switch (*c) {
+ case ' ':
+ if (NULL == ws)
+ ws = c;
+ continue;
+ case '\t':
+ /*
+ * Always warn about trailing tabs,
+ * even outside literal context,
+ * where they should be put on the next line.
+ */
+ if (NULL == ws)
+ ws = c;
+ /*
+ * Strip trailing tabs in literal context only;
+ * outside, they affect the next line.
+ */
+ if (mdoc->flags & ROFF_NOFILL)
+ continue;
+ break;
+ case '\\':
+ /* Skip the escaped character, too, if any. */
+ if (c[1])
+ c++;
+ /* FALLTHROUGH */
+ default:
+ ws = NULL;
+ break;
+ }
+ end = c + 1;
+ }
+ *end = '\0';
+
+ if (ws)
+ 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;
}
- return(node_append(mdoc, p));
-}
+ roff_word_alloc(mdoc, line, offs, buf+offs);
-void
-mdoc_node_free(struct mdoc_node *p)
-{
+ if (mdoc->flags & ROFF_NOFILL)
+ return 1;
- if (p->string)
- free(p->string);
- if (p->args)
- mdoc_argv_free(p->args);
- free(p);
-}
+ /*
+ * End-of-sentence check. If the last character is an unescaped
+ * EOS character, then flag the node as being the end of a
+ * sentence. The front-end will know how to interpret this.
+ */
+ assert(buf < end);
-void
-mdoc_node_freelist(struct mdoc_node *p)
-{
+ if (mandoc_eos(buf+offs, (size_t)(end-buf-offs)))
+ mdoc->last->flags |= NODE_EOS;
- if (p->child)
- mdoc_node_freelist(p->child);
- if (p->next)
- mdoc_node_freelist(p->next);
+ 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);
+ }
- mdoc_node_free(p);
+ return 1;
}
-
/*
- * Parse free-form text, that is, a line that does not begin with the
- * control character.
+ * Parse a macro line, that is, a line beginning with the control
+ * character.
*/
static int
-parsetext(struct mdoc *m, int line, char *buf)
-{
+mdoc_pmacro(struct roff_man *mdoc, int ln, char *buf, int 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;
+ }
- if (SEC_PROLOGUE == m->lastnamed)
- return(perr(m, line, 0, ETEXTPROL));
+ /* Skip a leading escape sequence or tab. */
- if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
- return(perr(m, line, 0, ENOBLANK));
+ switch (buf[offs]) {
+ case '\\':
+ cp = buf + offs + 1;
+ mandoc_escape(&cp, NULL, NULL);
+ offs = cp - buf;
+ break;
+ case '\t':
+ offs++;
+ break;
+ default:
+ break;
+ }
- if ( ! mdoc_word_alloc(m, line, 0, buf))
- return(0);
+ /* Jump to the next non-whitespace word. */
- m->next = MDOC_NEXT_SIBLING;
- return(1);
-}
+ while (buf[offs] == ' ')
+ offs++;
+ /*
+ * Trailing whitespace. Note that tabs are allowed to be passed
+ * into the parser as "text", so we only warn about spaces here.
+ */
-static int
-macrowarn(struct mdoc *m, int ln, const char *buf)
-{
- if ( ! (MDOC_IGN_MACRO & m->pflags))
- return(mdoc_perr(m, ln, 1,
- "unknown macro: %s%s",
- buf, strlen(buf) > 3 ? "..." : ""));
- return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
- "unknown macro: %s%s",
- buf, strlen(buf) > 3 ? "..." : ""));
-}
+ if ('\0' == buf[offs] && ' ' == buf[offs - 1])
+ mandoc_msg(MANDOCERR_SPACE_EOL, ln, offs - 1, NULL);
+ /*
+ * 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;
+ }
-/*
- * Parse a macro line, that is, a line beginning with the control
- * character.
- */
-int
-parsemacro(struct mdoc *m, int ln, char *buf)
-{
- int i, c;
- char mac[5];
-
- /* Comments and empties are quickly ignored. */
-
- if (0 == buf[1])
- return(1);
-
- if (' ' == buf[1]) {
- i = 2;
- while (buf[i] && ' ' == buf[i])
- i++;
- if (0 == buf[i])
- return(1);
- return(perr(m, ln, 1, ESPACE));
+ /*
+ * 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;
}
- if (buf[1] && '\\' == buf[1])
- if (buf[2] && '\"' == buf[2])
- return(1);
+ /* Normal processing of a macro. */
- /* Copy the first word into a nil-terminated buffer. */
+ (*mdoc_macro(tok)->fp)(mdoc, tok, ln, sv, &offs, buf);
- for (i = 1; i < 5; i++) {
- if (0 == (mac[i - 1] = buf[i]))
- break;
- else if (' ' == buf[i])
- break;
- }
+ /* In quick mode (for mandocdb), abort after the NAME section. */
- mac[i - 1] = 0;
-
- if (i == 5 || i <= 2) {
- if ( ! macrowarn(m, ln, mac))
- goto err;
- return(1);
- }
-
- if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
- if ( ! macrowarn(m, ln, mac))
- goto err;
- return(1);
- }
+ if (mdoc->quick && MDOC_Sh == tok &&
+ SEC_NAME != mdoc->last->sec)
+ return 2;
- /* The macro is sane. Jump to the next word. */
+ return 1;
+}
- while (buf[i] && ' ' == buf[i])
- i++;
+enum mdelim
+mdoc_isdelim(const char *p)
+{
- /* Begin recursive parse sequence. */
+ if ('\0' == p[0])
+ return DELIM_NONE;
- if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
- goto err;
+ 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;
+ }
- return(1);
+ if ('\\' != p[0])
+ return DELIM_NONE;
-err: /* Error out. */
+ if (0 == strcmp(p + 1, "."))
+ return DELIM_CLOSE;
+ if (0 == strcmp(p + 1, "fR|\\fP"))
+ return DELIM_MIDDLE;
- m->flags |= MDOC_HALT;
- return(0);
+ return DELIM_NONE;
}
git.ckatri.com / mandoc.git / blobdiff