-/* $Id: man.c,v 1.156 2015/04/18 17:28:36 schwarze Exp $ */
+/* $Id: man.c,v 1.187 2019/01/05 00:36:50 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2013, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2013-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
* Copyright (c) 2011 Joerg Sonnenberger <joerg@netbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
#include "roff.h"
#include "man.h"
#include "libmandoc.h"
+#include "roff_int.h"
#include "libman.h"
-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",
- "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 void man_breakscope(struct roff_man *, int);
-static void man_descope(struct roff_man *, int, int);
-static struct roff_node *man_node_alloc(struct roff_man *, int, int,
- enum roff_type, int);
-static void man_node_append(struct roff_man *,
- struct roff_node *);
-static void man_node_free(struct roff_node *);
-static void man_node_unlink(struct roff_man *,
- struct roff_node *);
+static char *man_hasc(char *);
static int man_ptext(struct roff_man *, int, char *, int);
static int man_pmacro(struct roff_man *, int, char *, int);
-const struct roff_node *
-man_node(const struct roff_man *man)
-{
-
- return(man->first);
-}
-
-const struct roff_meta *
-man_meta(const struct roff_man *man)
-{
-
- return(&man->meta);
-}
-
-void
-man_endparse(struct roff_man *man)
-{
-
- man_macroend(man);
-}
-
int
man_parseln(struct roff_man *man, int ln, char *buf, int offs)
{
if (man->last->type != ROFFT_EQN || ln > man->last->line)
man->flags |= MAN_NEWLINE;
- return (roff_getcontrol(man->roff, buf, &offs) ?
+ return roff_getcontrol(man->roff, buf, &offs) ?
man_pmacro(man, ln, buf, offs) :
- man_ptext(man, ln, buf, offs));
-}
-
-static void
-man_node_append(struct roff_man *man, struct roff_node *p)
-{
-
- assert(man->last);
- assert(man->first);
- assert(p->type != ROFFT_ROOT);
-
- switch (man->next) {
- case ROFF_NEXT_SIBLING:
- man->last->next = p;
- p->prev = man->last;
- p->parent = man->last->parent;
- break;
- case ROFF_NEXT_CHILD:
- man->last->child = p;
- p->parent = man->last;
- break;
- default:
- abort();
- /* NOTREACHED */
- }
-
- assert(p->parent);
- p->parent->nchild++;
-
- switch (p->type) {
- case ROFFT_BLOCK:
- if (p->tok == MAN_SH || p->tok == MAN_SS)
- man->flags &= ~MAN_LITERAL;
- break;
- case ROFFT_HEAD:
- assert(p->parent->type == ROFFT_BLOCK);
- p->parent->head = p;
- break;
- case ROFFT_BODY:
- assert(p->parent->type == ROFFT_BLOCK);
- p->parent->body = p;
- break;
- default:
- break;
- }
-
- man->last = p;
-
- switch (p->type) {
- case ROFFT_TBL:
- /* FALLTHROUGH */
- case ROFFT_TEXT:
- man_valid_post(man);
- break;
- default:
- break;
- }
-}
-
-static struct roff_node *
-man_node_alloc(struct roff_man *man, int line, int pos,
- enum roff_type type, int tok)
-{
- struct roff_node *p;
-
- p = mandoc_calloc(1, sizeof(*p));
- p->line = line;
- p->pos = pos;
- p->type = type;
- p->tok = tok;
-
- if (man->flags & MAN_NEWLINE)
- p->flags |= MAN_LINE;
- man->flags &= ~MAN_NEWLINE;
- return(p);
-}
-
-void
-man_elem_alloc(struct roff_man *man, int line, int pos, int tok)
-{
- struct roff_node *p;
-
- p = man_node_alloc(man, line, pos, ROFFT_ELEM, tok);
- man_node_append(man, p);
- man->next = ROFF_NEXT_CHILD;
-}
-
-void
-man_head_alloc(struct roff_man *man, int line, int pos, int tok)
-{
- struct roff_node *p;
-
- p = man_node_alloc(man, line, pos, ROFFT_HEAD, tok);
- man_node_append(man, p);
- man->next = ROFF_NEXT_CHILD;
-}
-
-void
-man_body_alloc(struct roff_man *man, int line, int pos, int tok)
-{
- struct roff_node *p;
-
- p = man_node_alloc(man, line, pos, ROFFT_BODY, tok);
- man_node_append(man, p);
- man->next = ROFF_NEXT_CHILD;
-}
-
-void
-man_block_alloc(struct roff_man *man, int line, int pos, int tok)
-{
- struct roff_node *p;
-
- p = man_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
- man_node_append(man, p);
- man->next = ROFF_NEXT_CHILD;
-}
-
-void
-man_word_alloc(struct roff_man *man, int line, int pos, const char *word)
-{
- struct roff_node *n;
-
- n = man_node_alloc(man, line, pos, ROFFT_TEXT, MAN_MAX);
- n->string = roff_strdup(man->roff, word);
- man_node_append(man, n);
- man->next = ROFF_NEXT_SIBLING;
-}
-
-void
-man_word_append(struct roff_man *man, const char *word)
-{
- struct roff_node *n;
- char *addstr, *newstr;
-
- n = man->last;
- addstr = roff_strdup(man->roff, word);
- mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
- free(addstr);
- free(n->string);
- n->string = newstr;
- man->next = ROFF_NEXT_SIBLING;
+ man_ptext(man, ln, buf, offs);
}
/*
- * Free all of the resources held by a node. This does NOT unlink a
- * node from its context; for that, see man_node_unlink().
+ * If the string ends with \c, return a pointer to the backslash.
+ * Otherwise, return NULL.
*/
-static void
-man_node_free(struct roff_node *p)
-{
-
- free(p->string);
- free(p);
-}
-
-void
-man_node_delete(struct roff_man *man, struct roff_node *p)
+static char *
+man_hasc(char *start)
{
+ char *cp, *ep;
- while (p->child)
- man_node_delete(man, p->child);
-
- man_node_unlink(man, p);
- man_node_free(p);
-}
-
-void
-man_addeqn(struct roff_man *man, const struct eqn *ep)
-{
- struct roff_node *n;
-
- n = man_node_alloc(man, ep->ln, ep->pos, ROFFT_EQN, MAN_MAX);
- n->eqn = ep;
- if (ep->ln > man->last->line)
- n->flags |= MAN_LINE;
- man_node_append(man, n);
- man->next = ROFF_NEXT_SIBLING;
- man_descope(man, ep->ln, ep->pos);
+ ep = strchr(start, '\0') - 2;
+ if (ep < start || ep[0] != '\\' || ep[1] != 'c')
+ return NULL;
+ for (cp = ep; cp > start; cp--)
+ if (cp[-1] != '\\')
+ break;
+ return (ep - cp) % 2 ? NULL : ep;
}
void
-man_addspan(struct roff_man *man, const struct tbl_span *sp)
+man_descope(struct roff_man *man, int line, int offs, char *start)
{
- struct roff_node *n;
+ /* Trailing \c keeps next-line scope open. */
- man_breakscope(man, MAN_MAX);
- n = man_node_alloc(man, sp->line, 0, ROFFT_TBL, MAN_MAX);
- n->span = sp;
- man_node_append(man, n);
- man->next = ROFF_NEXT_SIBLING;
- man_descope(man, sp->line, 0);
-}
+ if (start != NULL && man_hasc(start) != NULL)
+ return;
-static void
-man_descope(struct roff_man *man, int line, int offs)
-{
/*
* 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).
+ * first close out the element scopes (if applicable),
+ * then close out the block scope (also if applicable).
*/
if (man->flags & MAN_ELINE) {
+ while (man->last->parent->type != ROFFT_ROOT &&
+ man_macro(man->last->parent->tok)->flags & MAN_ESCOPED)
+ man_unscope(man, man->last->parent);
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);
- man_body_alloc(man, line, offs, man->last->tok);
+ roff_body_alloc(man, line, offs, man->last->tok);
+ man->flags &= ~(MAN_BLINE | ROFF_NONOFILL);
}
static int
man_ptext(struct roff_man *man, int line, char *buf, int offs)
{
int i;
+ char *ep;
- /* Literal free-form text whitespace is preserved. */
+ /* In no-fill mode, whitespace is preserved on text lines. */
- if (man->flags & MAN_LITERAL) {
- man_word_alloc(man, line, offs, buf + offs);
- man_descope(man, line, offs);
- return(1);
+ if (man->flags & ROFF_NOFILL) {
+ roff_word_alloc(man, line, offs, buf + offs);
+ man_descope(man, line, offs, buf + offs);
+ return 1;
}
for (i = offs; buf[i] == ' '; i++)
/* Skip leading whitespace. */ ;
/*
- * Blank lines are ignored right after headings
+ * Blank lines are ignored in next line scope
+ * and right after headings and cancel preceding \c,
* 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) {
- man_elem_alloc(man, line, offs, MAN_sp);
- man->next = ROFF_NEXT_SIBLING;
+ if (man->flags & (MAN_ELINE | MAN_BLINE)) {
+ mandoc_msg(MANDOCERR_BLK_BLANK, line, 0, NULL);
+ return 1;
+ }
+ if (man->last->tok == MAN_SH || man->last->tok == MAN_SS)
+ return 1;
+ if (man->last->type == ROFFT_TEXT &&
+ ((ep = man_hasc(man->last->string)) != NULL)) {
+ *ep = '\0';
+ return 1;
}
- return(1);
+ roff_elem_alloc(man, line, offs, ROFF_sp);
+ man->next = ROFF_NEXT_SIBLING;
+ return 1;
}
/*
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);
+ mandoc_msg(MANDOCERR_SPACE_EOL, line, i - 1, NULL);
for (--i; i && ' ' == buf[i]; i--)
/* Spin back to non-space. */ ;
buf[i] = '\0';
}
- man_word_alloc(man, line, offs, buf + offs);
+ roff_word_alloc(man, line, offs, buf + offs);
/*
* End-of-sentence check. If the last character is an unescaped
assert(i);
if (mandoc_eos(buf, (size_t)i))
- man->last->flags |= MAN_EOS;
+ man->last->flags |= NODE_EOS;
- man_descope(man, line, offs);
- return(1);
+ man_descope(man, line, offs, buf + offs);
+ return 1;
}
static int
{
struct roff_node *n;
const char *cp;
- int tok;
- int i, ppos;
+ size_t sz;
+ enum roff_tok tok;
+ int ppos;
int bline;
- char mac[5];
-
- ppos = offs;
-
- /*
- * Copy the first word into a nil-terminated buffer.
- * Stop when a space, tab, escape, or eoln is encountered.
- */
-
- i = 0;
- while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
- mac[i++] = buf[offs++];
- mac[i] = '\0';
+ /* Determine the line macro. */
- tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
-
- if (tok == MAN_MAX) {
- mandoc_msg(MANDOCERR_MACRO, man->parse,
- ln, ppos, buf + ppos - 1);
- return(1);
+ ppos = offs;
+ tok = TOKEN_NONE;
+ for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++)
+ offs++;
+ if (sz > 0 && sz < 4)
+ tok = roffhash_find(man->manmac, buf + ppos, sz);
+ if (tok == TOKEN_NONE) {
+ mandoc_msg(MANDOCERR_MACRO, ln, ppos, "%s", buf + ppos - 1);
+ return 1;
}
/* Skip a leading escape sequence or tab. */
/* Jump to the next non-whitespace word. */
- while (buf[offs] && buf[offs] == ' ')
+ while (buf[offs] == ' ')
offs++;
/*
*/
if (buf[offs] == '\0' && buf[offs - 1] == ' ')
- mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
- ln, offs - 1, NULL);
+ mandoc_msg(MANDOCERR_SPACE_EOL, ln, offs - 1, NULL);
/*
* Some macros break next-line scopes; otherwise, remember
man_breakscope(man, tok);
bline = man->flags & MAN_BLINE;
+ /*
+ * If the line in next-line scope ends with \c, keep the
+ * next-line scope open for the subsequent input line.
+ * That is not at all portable, only groff >= 1.22.4
+ * does it, but *if* this weird idiom occurs in a manual
+ * page, that's very likely what the author intended.
+ */
+
+ if (bline && man_hasc(buf + offs))
+ bline = 0;
+
/* Call to handler... */
- assert(man_macros[tok].fp);
- (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
+ (*man_macro(tok)->fp)(man, tok, ln, ppos, &offs, buf);
/* In quick mode (for mandocdb), abort after the NAME section. */
n = man->last;
if (n->type == ROFFT_BODY &&
strcmp(n->prev->child->string, "NAME"))
- return(2);
+ return 2;
}
/*
* unless the next-line scope is allowed to continue.
*/
- if ( ! bline || man->flags & MAN_ELINE ||
- man_macros[tok].flags & MAN_NSCOPED)
- return(1);
-
- assert(man->flags & MAN_BLINE);
- man->flags &= ~MAN_BLINE;
+ if (bline == 0 ||
+ (man->flags & MAN_BLINE) == 0 ||
+ man->flags & MAN_ELINE ||
+ man_macro(tok)->flags & MAN_NSCOPED)
+ return 1;
man_unscope(man, man->last->parent);
- man_body_alloc(man, ln, ppos, man->last->tok);
- return(1);
+ roff_body_alloc(man, ln, ppos, man->last->tok);
+ man->flags &= ~(MAN_BLINE | ROFF_NONOFILL);
+ return 1;
}
void
* Delete the element that is being broken.
*/
- if (man->flags & MAN_ELINE && (tok == MAN_MAX ||
- ! (man_macros[tok].flags & MAN_NSCOPED))) {
+ if (man->flags & MAN_ELINE && (tok < MAN_TH ||
+ (man_macro(tok)->flags & MAN_NSCOPED) == 0)) {
n = man->last;
- assert(n->type != ROFFT_TEXT);
- if (man_macros[n->tok].flags & MAN_NSCOPED)
+ if (n->type == ROFFT_TEXT)
+ n = n->parent;
+ if (n->tok < MAN_TH ||
+ (man_macro(n->tok)->flags & (MAN_NSCOPED | MAN_ESCOPED))
+ == MAN_NSCOPED)
n = n->parent;
- mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
- n->line, n->pos, "%s breaks %s",
- tok == MAN_MAX ? "TS" : man_macronames[tok],
- man_macronames[n->tok]);
+ mandoc_msg(MANDOCERR_BLK_LINE, n->line, n->pos,
+ "%s breaks %s", roff_name[tok], roff_name[n->tok]);
- man_node_delete(man, n);
+ roff_node_delete(man, n);
man->flags &= ~MAN_ELINE;
}
+ /*
+ * Weird special case:
+ * Switching fill mode closes section headers.
+ */
+
+ if (man->flags & MAN_BLINE &&
+ (tok == ROFF_nf || tok == ROFF_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 | ROFF_NONOFILL);
+ }
+
/*
* 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 == MAN_MAX ||
- man_macros[tok].flags & MAN_BSCOPE)) {
+ if (man->flags & MAN_BLINE && tok != ROFF_nf && tok != ROFF_fi &&
+ (tok < MAN_TH || man_macro(tok)->flags & MAN_XSCOPE)) {
n = man->last;
if (n->type == ROFFT_TEXT)
n = n->parent;
- if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
+ if (n->tok < MAN_TH ||
+ (man_macro(n->tok)->flags & MAN_XSCOPE) == 0)
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 == MAN_MAX ? "TS" : man_macronames[tok],
- man_macronames[n->tok]);
-
- man_node_delete(man, n);
- man->flags &= ~MAN_BLINE;
- }
-}
-
-/*
- * Unlink a node from its context. If "man" is provided, the last parse
- * point will also be adjusted accordingly.
- */
-static void
-man_node_unlink(struct roff_man *man, struct roff_node *n)
-{
-
- /* Adjust siblings. */
-
- if (n->prev)
- n->prev->next = n->next;
- if (n->next)
- n->next->prev = n->prev;
+ assert(man_macro(n->tok)->flags & MAN_BSCOPED);
- /* Adjust parent. */
+ mandoc_msg(MANDOCERR_BLK_LINE, n->line, n->pos,
+ "%s breaks %s", roff_name[tok], roff_name[n->tok]);
- if (n->parent) {
- n->parent->nchild--;
- if (n->parent->child == n)
- n->parent->child = n->prev ? n->prev : n->next;
+ roff_node_delete(man, n);
+ man->flags &= ~(MAN_BLINE | ROFF_NONOFILL);
}
-
- /* Adjust parse point, if applicable. */
-
- if (man && man->last == n) {
- /*XXX: this can occur when bailing from validation. */
- /*assert(NULL == n->next);*/
- if (n->prev) {
- man->last = n->prev;
- man->next = ROFF_NEXT_SIBLING;
- } else {
- man->last = n->parent;
- man->next = ROFF_NEXT_CHILD;
- }
- }
-
- if (man && man->first == n)
- man->first = NULL;
-}
-
-const struct mparse *
-man_mparse(const struct roff_man *man)
-{
-
- assert(man && man->parse);
- return(man->parse);
-}
-
-void
-man_deroff(char **dest, const struct roff_node *n)
-{
- char *cp;
- size_t sz;
-
- if (n->type != ROFFT_TEXT) {
- for (n = n->child; n; n = n->next)
- man_deroff(dest, n);
- return;
- }
-
- /* Skip leading whitespace and escape sequences. */
-
- cp = n->string;
- while ('\0' != *cp) {
- if ('\\' == *cp) {
- cp++;
- mandoc_escape((const char **)&cp, NULL, NULL);
- } else if (isspace((unsigned char)*cp))
- cp++;
- else
- break;
- }
-
- /* Skip trailing whitespace. */
-
- for (sz = strlen(cp); sz; sz--)
- if (0 == isspace((unsigned char)cp[sz-1]))
- break;
-
- /* Skip empty strings. */
-
- if (0 == sz)
- return;
-
- if (NULL == *dest) {
- *dest = mandoc_strndup(cp, sz);
- return;
- }
-
- mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
- free(*dest);
- *dest = cp;
}
git.ckatri.com / mandoc.git / blobdiff