-/* $Id: man.c,v 1.2 2009/03/23 15:20:51 kristaps Exp $ */
+/* $Id: man.c,v 1.166 2015/10/22 21:54:23 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
+ * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2013, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2011 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 copyright notice and this permission notice appear in all
- * copies.
+ * 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 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
- * AUTHOR 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.
+ * 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 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.
*/
+#include "config.h"
+
+#include <sys/types.h>
+
#include <assert.h>
#include <ctype.h>
-#include <err.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include "mandoc_aux.h"
+#include "mandoc.h"
+#include "roff.h"
+#include "man.h"
+#include "libmandoc.h"
+#include "roff_int.h"
#include "libman.h"
-const char *const __man_macronames[MAN_MAX] = {
- "\\\"", "TH", "SH", "SS",
- "TP", "LP", "PP", "P",
+const char *const __man_macronames[MAN_MAX] = {
+ "br", "TH", "SH", "SS",
+ "TP", "LP", "PP", "P",
"IP", "HP", "SM", "SB",
"BI", "IB", "BR", "RB",
- "R", "B", "I", "IR"
+ "R", "B", "I", "IR",
+ "RI", "sp", "nf",
+ "fi", "RE", "RS", "DT",
+ "UC", "PD", "AT", "in",
+ "ft", "OP", "EX", "EE",
+ "UR", "UE", "ll"
};
const char * const *man_macronames = __man_macronames;
-static struct man_node *man_node_alloc(int, int, enum man_type);
-static int man_node_append(struct man *,
- struct man_node *);
-static int man_ptext(struct man *, int, char *);
-static int man_pmacro(struct man *, int, char *);
-static void man_free1(struct man *);
-static void man_alloc1(struct man *);
+static void man_descope(struct roff_man *, int, int);
+static int man_ptext(struct roff_man *, int, char *, int);
+static int man_pmacro(struct roff_man *, int, char *, int);
-const struct man_node *
-man_node(const struct man *m)
+int
+man_parseln(struct roff_man *man, int ln, char *buf, int offs)
{
- return(MAN_HALT & m->flags ? NULL : m->first);
-}
-
+ if (man->last->type != ROFFT_EQN || ln > man->last->line)
+ man->flags |= MAN_NEWLINE;
-const struct man_meta *
-man_meta(const struct man *m)
-{
-
- return(MAN_HALT & m->flags ? NULL : &m->meta);
+ return roff_getcontrol(man->roff, buf, &offs) ?
+ man_pmacro(man, ln, buf, offs) :
+ man_ptext(man, ln, buf, offs);
}
-
-void
-man_reset(struct man *man)
+static void
+man_descope(struct roff_man *man, int line, int offs)
{
-
- man_free1(man);
- man_alloc1(man);
+ /*
+ * Co-ordinate what happens with having a next-line scope open:
+ * first close out the element scope (if applicable), then close
+ * out the block scope (also if applicable).
+ */
+
+ if (man->flags & MAN_ELINE) {
+ man->flags &= ~MAN_ELINE;
+ man_unscope(man, man->last->parent);
+ }
+ if ( ! (man->flags & MAN_BLINE))
+ return;
+ man->flags &= ~MAN_BLINE;
+ man_unscope(man, man->last->parent);
+ roff_body_alloc(man, line, offs, man->last->tok);
}
-
-void
-man_free(struct man *man)
+static int
+man_ptext(struct roff_man *man, int line, char *buf, int offs)
{
+ int i;
- man_free1(man);
+ /* Literal free-form text whitespace is preserved. */
- if (man->htab)
- man_hash_free(man->htab);
- free(man);
-}
+ if (man->flags & MAN_LITERAL) {
+ roff_word_alloc(man, line, offs, buf + offs);
+ man_descope(man, line, offs);
+ return 1;
+ }
+ for (i = offs; buf[i] == ' '; i++)
+ /* Skip leading whitespace. */ ;
+
+ /*
+ * Blank lines are ignored right after headings
+ * but add a single vertical space elsewhere.
+ */
+
+ if (buf[i] == '\0') {
+ /* Allocate a blank entry. */
+ if (man->last->tok != MAN_SH &&
+ man->last->tok != MAN_SS) {
+ roff_elem_alloc(man, line, offs, MAN_sp);
+ man->next = ROFF_NEXT_SIBLING;
+ }
+ return 1;
+ }
-struct man *
-man_alloc(void)
-{
- struct man *p;
+ /*
+ * Warn if the last un-escaped character is whitespace. Then
+ * strip away the remaining spaces (tabs stay!).
+ */
- p = calloc(1, sizeof(struct man));
- if (NULL == p)
- err(1, "calloc");
+ i = (int)strlen(buf);
+ assert(i);
- man_alloc1(p);
+ if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
+ if (i > 1 && '\\' != buf[i - 2])
+ mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
+ line, i - 1, NULL);
- p->htab = man_hash_alloc();
- return(p);
-}
+ for (--i; i && ' ' == buf[i]; i--)
+ /* Spin back to non-space. */ ;
+ /* Jump ahead of escaped whitespace. */
+ i += '\\' == buf[i] ? 2 : 1;
-int
-man_endparse(struct man *m)
-{
-
- /* FIXME. */
- return(1);
-}
+ buf[i] = '\0';
+ }
+ roff_word_alloc(man, line, offs, buf + offs);
+ /*
+ * 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.
+ */
-int
-man_parseln(struct man *m, int ln, char *buf)
-{
+ assert(i);
+ if (mandoc_eos(buf, (size_t)i))
+ man->last->flags |= MAN_EOS;
- return('.' == *buf ?
- man_pmacro(m, ln, buf) :
- man_ptext(m, ln, buf));
+ man_descope(man, line, offs);
+ return 1;
}
-
-static void
-man_free1(struct man *man)
+static int
+man_pmacro(struct roff_man *man, int ln, char *buf, int offs)
{
+ struct roff_node *n;
+ const char *cp;
+ int tok;
+ int i, ppos;
+ int bline;
+ char mac[5];
- if (man->first)
- man_node_freelist(man->first);
- if (man->meta.title)
- free(man->meta.title);
- if (man->meta.os)
- free(man->meta.os);
- if (man->meta.vol)
- free(man->meta.vol);
-}
+ ppos = offs;
+ /*
+ * Copy the first word into a nil-terminated buffer.
+ * Stop when a space, tab, escape, or eoln is encountered.
+ */
-static void
-man_alloc1(struct man *m)
-{
+ i = 0;
+ while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
+ mac[i++] = buf[offs++];
- bzero(&m->meta, sizeof(struct man_meta));
- m->flags = 0;
- m->last = calloc(1, sizeof(struct man_node));
- if (NULL == m->last)
- err(1, "calloc");
- m->first = m->last;
- m->last->type = MAN_ROOT;
- m->next = MAN_NEXT_CHILD;
-}
+ mac[i] = '\0';
+ tok = (i > 0 && i < 4) ? man_hash_find(mac) : TOKEN_NONE;
-static int
-man_node_append(struct man *man, struct man_node *p)
-{
+ if (tok == TOKEN_NONE) {
+ mandoc_msg(MANDOCERR_MACRO, man->parse,
+ ln, ppos, buf + ppos - 1);
+ return 1;
+ }
- assert(man->last);
- assert(man->first);
- assert(MAN_ROOT != p->type);
+ /* Skip a leading escape sequence or tab. */
- switch (man->next) {
- case (MAN_NEXT_SIBLING):
- man->last->next = p;
- p->prev = man->last;
- p->parent = man->last->parent;
- break;
- case (MAN_NEXT_CHILD):
- man->last->child = p;
- p->parent = man->last;
+ switch (buf[offs]) {
+ case '\\':
+ cp = buf + offs + 1;
+ mandoc_escape(&cp, NULL, NULL);
+ offs = cp - buf;
break;
- default:
- abort();
- /* NOTREACHED */
- }
-
-#if 0
- if ( ! man_valid_pre(man, p))
- return(0);
- if ( ! man_action_pre(man, p))
- return(0);
-#endif
-
- man->last = p;
-
- switch (p->type) {
- case (MAN_TEXT):
-#if 0
- if ( ! man_valid_post(man))
- return(0);
- if ( ! man_action_post(man))
- return(0);
-#endif
+ case '\t':
+ offs++;
break;
default:
break;
}
- return(1);
-}
+ /* Jump to the next non-whitespace word. */
+ while (buf[offs] && buf[offs] == ' ')
+ offs++;
-static struct man_node *
-man_node_alloc(int line, int pos, enum man_type type)
-{
- struct man_node *p;
+ /*
+ * Trailing whitespace. Note that tabs are allowed to be passed
+ * into the parser as "text", so we only warn about spaces here.
+ */
- if (NULL == (p = calloc(1, sizeof(struct man_node))))
- err(1, "malloc");
- p->line = line;
- p->pos = pos;
- p->type = type;
+ if (buf[offs] == '\0' && buf[offs - 1] == ' ')
+ mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
+ ln, offs - 1, NULL);
- return(p);
-}
+ /*
+ * Some macros break next-line scopes; otherwise, remember
+ * whether we are in next-line scope for a block head.
+ */
+ man_breakscope(man, tok);
+ bline = man->flags & MAN_BLINE;
-int
-man_elem_alloc(struct man *man, int line, int pos, int tok)
-{
- struct man_node *p;
+ /* Call to handler... */
- p = man_node_alloc(line, pos, MAN_ELEM);
- p->tok = tok;
+ assert(man_macros[tok].fp);
+ (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
- return(man_node_append(man, p));
-}
+ /* In quick mode (for mandocdb), abort after the NAME section. */
+ if (man->quick && tok == MAN_SH) {
+ n = man->last;
+ if (n->type == ROFFT_BODY &&
+ strcmp(n->prev->child->string, "NAME"))
+ return 2;
+ }
-int
-man_word_alloc(struct man *man,
- int line, int pos, const char *word)
-{
- struct man_node *p;
-
- p = man_node_alloc(line, pos, MAN_TEXT);
- if (NULL == (p->string = strdup(word)))
- err(1, "strdup");
+ /*
+ * If we are in a next-line scope for a block head,
+ * close it out now and switch to the body,
+ * unless the next-line scope is allowed to continue.
+ */
- return(man_node_append(man, p));
-}
+ if ( ! bline || man->flags & MAN_ELINE ||
+ man_macros[tok].flags & MAN_NSCOPED)
+ return 1;
+ assert(man->flags & MAN_BLINE);
+ man->flags &= ~MAN_BLINE;
-void
-man_node_free(struct man_node *p)
-{
-
- if (p->string)
- free(p->string);
- free(p);
+ man_unscope(man, man->last->parent);
+ roff_body_alloc(man, ln, ppos, man->last->tok);
+ return 1;
}
-
void
-man_node_freelist(struct man_node *p)
+man_breakscope(struct roff_man *man, int tok)
{
+ struct roff_node *n;
+
+ /*
+ * An element next line scope is open,
+ * and the new macro is not allowed inside elements.
+ * Delete the element that is being broken.
+ */
+
+ if (man->flags & MAN_ELINE && (tok == TOKEN_NONE ||
+ ! (man_macros[tok].flags & MAN_NSCOPED))) {
+ n = man->last;
+ assert(n->type != ROFFT_TEXT);
+ if (man_macros[n->tok].flags & MAN_NSCOPED)
+ n = n->parent;
+
+ mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
+ n->line, n->pos, "%s breaks %s",
+ tok == TOKEN_NONE ? "TS" : man_macronames[tok],
+ man_macronames[n->tok]);
+
+ roff_node_delete(man, n);
+ man->flags &= ~MAN_ELINE;
+ }
- if (p->child)
- man_node_freelist(p->child);
- if (p->next)
- man_node_freelist(p->next);
+ /*
+ * Weird special case:
+ * Switching fill mode closes section headers.
+ */
+
+ if (man->flags & MAN_BLINE &&
+ (tok == MAN_nf || tok == MAN_fi) &&
+ (man->last->tok == MAN_SH || man->last->tok == MAN_SS)) {
+ n = man->last;
+ man_unscope(man, n);
+ roff_body_alloc(man, n->line, n->pos, n->tok);
+ man->flags &= ~MAN_BLINE;
+ }
- man_node_free(p);
+ /*
+ * A block header next line scope is open,
+ * and the new macro is not allowed inside block headers.
+ * Delete the block that is being broken.
+ */
+
+ if (man->flags & MAN_BLINE && (tok == TOKEN_NONE ||
+ man_macros[tok].flags & MAN_BSCOPE)) {
+ n = man->last;
+ if (n->type == ROFFT_TEXT)
+ n = n->parent;
+ if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
+ n = n->parent;
+
+ assert(n->type == ROFFT_HEAD);
+ n = n->parent;
+ assert(n->type == ROFFT_BLOCK);
+ assert(man_macros[n->tok].flags & MAN_SCOPED);
+
+ mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
+ n->line, n->pos, "%s breaks %s",
+ tok == TOKEN_NONE ? "TS" : man_macronames[tok],
+ man_macronames[n->tok]);
+
+ roff_node_delete(man, n);
+ man->flags &= ~MAN_BLINE;
+ }
}
-
-static int
-man_ptext(struct man *m, int line, char *buf)
+const struct mparse *
+man_mparse(const struct roff_man *man)
{
- if ( ! man_word_alloc(m, line, 0, buf))
- return(0);
- m->next = MAN_NEXT_SIBLING;
- return(1);
+ assert(man && man->parse);
+ return man->parse;
}
-
-int
-man_pmacro(struct man *m, int ln, char *buf)
+void
+man_state(struct roff_man *man, struct roff_node *n)
{
- 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);
- warnx("invalid syntax");
- return(0);
- }
-
- if (buf[1] && '\\' == buf[1])
- if (buf[2] && '\"' == buf[2])
- return(1);
-
- /* Copy the first word into a nil-terminated buffer. */
- for (i = 1; i < 5; i++) {
- if (0 == (mac[i - 1] = buf[i]))
- break;
- else if (' ' == buf[i])
- break;
- }
-
- mac[i - 1] = 0;
-
- if (i == 5 || i <= 1) {
- warnx("unknown macro: %s", mac);
- goto err;
- }
-
- if (MAN_MAX == (c = man_hash_find(m->htab, mac))) {
- warnx("unknown macro: %s", mac);
- goto err;
+ switch(n->tok) {
+ case MAN_nf:
+ case MAN_EX:
+ if (man->flags & MAN_LITERAL && ! (n->flags & MAN_VALID))
+ mandoc_msg(MANDOCERR_NF_SKIP, man->parse,
+ n->line, n->pos, "nf");
+ man->flags |= MAN_LITERAL;
+ break;
+ case MAN_fi:
+ case MAN_EE:
+ if ( ! (man->flags & MAN_LITERAL) &&
+ ! (n->flags & MAN_VALID))
+ mandoc_msg(MANDOCERR_FI_SKIP, man->parse,
+ n->line, n->pos, "fi");
+ man->flags &= ~MAN_LITERAL;
+ break;
+ default:
+ break;
}
+ man->last->flags |= MAN_VALID;
+}
- /* The macro is sane. Jump to the next word. */
-
- while (buf[i] && ' ' == buf[i])
- i++;
-
- /* Begin recursive parse sequence. */
-
- if ( ! man_macro(m, c, ln, 1, &i, buf))
- goto err;
-
- return(1);
-
-err: /* Error out. */
+void
+man_validate(struct roff_man *man)
+{
- m->flags |= MAN_HALT;
- return(0);
+ man->last = man->first;
+ man_node_validate(man);
+ man->flags &= ~MAN_LITERAL;
}
git.ckatri.com / mandoc.git / blobdiff