-/* $Id: man.c,v 1.43 2009/10/26 07:11:06 kristaps Exp $ */
+/* $Id: man.c,v 1.74 2010/05/17 22:11:42 kristaps Exp $ */
/*
* Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
*
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <sys/types.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>
+#include "mandoc.h"
#include "libman.h"
-
-const char *const __man_merrnames[WERRMAX] = {
- "invalid character", /* WNPRINT */
- "system: malloc error", /* WNMEM */
- "invalid manual section", /* WMSEC */
- "invalid date format", /* WDATE */
- "scope of prior line violated", /* WLNSCOPE */
- "trailing whitespace", /* WTSPACE */
- "unterminated quoted parameter", /* WTQUOTE */
- "document has no body", /* WNODATA */
- "document has no title/section", /* WNOTITLE */
- "invalid escape sequence", /* WESCAPE */
- "invalid number format", /* WNUMFMT */
- "expected block head arguments", /* WHEADARGS */
- "expected block body arguments", /* WBODYARGS */
- "expected empty block head", /* WNHEADARGS */
- "ill-formed macro", /* WMACROFORM */
- "scope open on exit", /* WEXITSCOPE */
- "no scope context", /* WNOSCOPE */
- "literal context already open", /* WOLITERAL */
- "no literal context open" /* WNLITERAL */
-};
+#include "libmandoc.h"
const char *const __man_macronames[MAN_MAX] = {
"br", "TH", "SH", "SS",
"R", "B", "I", "IR",
"RI", "na", "i", "sp",
"nf", "fi", "r", "RE",
- "RS", "DT", "UC", "PD"
+ "RS", "DT", "UC", "PD",
+ "Sp", "Vb", "Ve", "AT",
};
const char * const *man_macronames = __man_macronames;
static struct man_node *man_node_alloc(int, int,
- enum man_type, int);
+ enum man_type, enum mant);
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_node_free(struct man_node *);
+static void man_node_unlink(struct man *,
+ struct man_node *);
+static int man_ptext(struct man *, int, char *, int);
+static int man_pmacro(struct man *, int, char *, int);
static void man_free1(struct man *);
-static int man_alloc1(struct man *);
-static int pstring(struct man *, int, int,
- const char *, size_t);
-static int macrowarn(struct man *, int, const char *);
-
-#ifdef __linux__
-extern size_t strlcpy(char *, const char *, size_t);
-#endif
+static void man_alloc1(struct man *);
+static int macrowarn(struct man *, int, const char *, int);
const struct man_node *
}
-int
+void
man_reset(struct man *man)
{
man_free1(man);
- return(man_alloc1(man));
+ man_alloc1(man);
}
struct man *
-man_alloc(void *data, int pflags, const struct man_cb *cb)
+man_alloc(void *data, int pflags, mandocmsg msg)
{
struct man *p;
- if (NULL == (p = calloc(1, sizeof(struct man))))
- return(NULL);
-
- if ( ! man_alloc1(p)) {
- free(p);
- return(NULL);
- }
+ p = mandoc_calloc(1, sizeof(struct man));
man_hash_init();
-
p->data = data;
p->pflags = pflags;
- (void)memcpy(&p->cb, cb, sizeof(struct man_cb));
+ p->msg = msg;
+
+ man_alloc1(p);
return(p);
}
int
-man_parseln(struct man *m, int ln, char *buf)
+man_parseln(struct man *m, int ln, char *buf, int offs)
{
- return('.' == *buf ?
- man_pmacro(m, ln, buf) :
- man_ptext(m, ln, buf));
+ if (MAN_HALT & m->flags)
+ return(0);
+
+ return(('.' == buf[offs] || '\'' == buf[offs]) ?
+ man_pmacro(m, ln, buf, offs) :
+ man_ptext(m, ln, buf, offs));
}
{
if (man->first)
- man_node_freelist(man->first);
+ man_node_delete(man, man->first);
if (man->meta.title)
free(man->meta.title);
if (man->meta.source)
free(man->meta.source);
if (man->meta.vol)
free(man->meta.vol);
+ if (man->meta.msec)
+ free(man->meta.msec);
}
-static int
+static void
man_alloc1(struct man *m)
{
- bzero(&m->meta, sizeof(struct man_meta));
+ memset(&m->meta, 0, sizeof(struct man_meta));
m->flags = 0;
- m->last = calloc(1, sizeof(struct man_node));
- if (NULL == m->last)
- return(0);
+ m->last = mandoc_calloc(1, sizeof(struct man_node));
m->first = m->last;
m->last->type = MAN_ROOT;
+ m->last->tok = MAN_MAX;
m->next = MAN_NEXT_CHILD;
- return(1);
}
/* NOTREACHED */
}
+ assert(p->parent);
p->parent->nchild++;
if ( ! man_valid_pre(man, p))
static struct man_node *
-man_node_alloc(int line, int pos, enum man_type type, int tok)
+man_node_alloc(int line, int pos, enum man_type type, enum mant tok)
{
struct man_node *p;
- p = calloc(1, sizeof(struct man_node));
- if (NULL == p)
- return(NULL);
-
+ p = mandoc_calloc(1, sizeof(struct man_node));
p->line = line;
p->pos = pos;
p->type = type;
int
-man_elem_alloc(struct man *m, int line, int pos, int tok)
+man_elem_alloc(struct man *m, int line, int pos, enum mant tok)
{
struct man_node *p;
p = man_node_alloc(line, pos, MAN_ELEM, tok);
- if (NULL == p)
- return(0);
if ( ! man_node_append(m, p))
return(0);
m->next = MAN_NEXT_CHILD;
int
-man_head_alloc(struct man *m, int line, int pos, int tok)
+man_head_alloc(struct man *m, int line, int pos, enum mant tok)
{
struct man_node *p;
p = man_node_alloc(line, pos, MAN_HEAD, tok);
- if (NULL == p)
- return(0);
if ( ! man_node_append(m, p))
return(0);
m->next = MAN_NEXT_CHILD;
int
-man_body_alloc(struct man *m, int line, int pos, int tok)
+man_body_alloc(struct man *m, int line, int pos, enum mant tok)
{
struct man_node *p;
p = man_node_alloc(line, pos, MAN_BODY, tok);
- if (NULL == p)
- return(0);
if ( ! man_node_append(m, p))
return(0);
m->next = MAN_NEXT_CHILD;
int
-man_block_alloc(struct man *m, int line, int pos, int tok)
+man_block_alloc(struct man *m, int line, int pos, enum mant tok)
{
struct man_node *p;
p = man_node_alloc(line, pos, MAN_BLOCK, tok);
- if (NULL == p)
- return(0);
if ( ! man_node_append(m, p))
return(0);
m->next = MAN_NEXT_CHILD;
}
-static int
-pstring(struct man *m, int line, int pos,
- const char *p, size_t len)
+int
+man_word_alloc(struct man *m, int line, int pos, const char *word)
{
struct man_node *n;
- size_t sv;
-
- n = man_node_alloc(line, pos, MAN_TEXT, -1);
- if (NULL == n)
- return(0);
+ size_t sv, len;
- n->string = malloc(len + 1);
- if (NULL == n->string) {
- free(n);
- return(0);
- }
+ len = strlen(word);
- sv = strlcpy(n->string, p, len + 1);
+ n = man_node_alloc(line, pos, MAN_TEXT, MAN_MAX);
+ n->string = mandoc_malloc(len + 1);
+ sv = strlcpy(n->string, word, len + 1);
/* Prohibit truncation. */
assert(sv < len + 1);
if ( ! man_node_append(m, n))
return(0);
+
m->next = MAN_NEXT_SIBLING;
return(1);
}
-int
-man_word_alloc(struct man *m, int line, int pos, const char *word)
-{
-
- return(pstring(m, line, pos, word, strlen(word)));
-}
-
-
-void
+/*
+ * Free all of the resources held by a node. This does NOT unlink a
+ * node from its context; for that, see man_node_unlink().
+ */
+static void
man_node_free(struct man_node *p)
{
if (p->string)
free(p->string);
- if (p->parent)
- p->parent->nchild--;
free(p);
}
void
-man_node_freelist(struct man_node *p)
+man_node_delete(struct man *m, struct man_node *p)
{
- struct man_node *n;
- if (p->child)
- man_node_freelist(p->child);
- assert(0 == p->nchild);
- n = p->next;
+ while (p->child)
+ man_node_delete(m, p->child);
+
+ man_node_unlink(m, p);
man_node_free(p);
- if (n)
- man_node_freelist(n);
}
static int
-man_ptext(struct man *m, int line, char *buf)
+man_ptext(struct man *m, int line, char *buf, int offs)
{
- int i, j;
+ int i;
+
+ /* Ignore bogus comments. */
+
+ if ('\\' == buf[offs] &&
+ '.' == buf[offs + 1] &&
+ '"' == buf[offs + 2])
+ return(man_pmsg(m, line, offs, MANDOCERR_BADCOMMENT));
/* Literal free-form text whitespace is preserved. */
if (MAN_LITERAL & m->flags) {
- if ( ! man_word_alloc(m, line, 0, buf))
+ if ( ! man_word_alloc(m, line, offs, buf + offs))
return(0);
goto descope;
}
- /* First de-chunk and allocate words. */
+ /* Pump blank lines directly into the backend. */
- for (i = 0; ' ' == buf[i]; i++)
+ for (i = offs; ' ' == buf[i]; i++)
/* Skip leading whitespace. */ ;
- if (0 == buf[i]) {
- if ( ! pstring(m, line, 0, &buf[i], 0))
+
+ if ('\0' == buf[i]) {
+ /* Allocate a blank entry. */
+ if ( ! man_word_alloc(m, line, offs, ""))
return(0);
goto descope;
}
- for (j = i; buf[i]; i++) {
- if (' ' != buf[i])
- continue;
+ /*
+ * Warn if the last un-escaped character is whitespace. Then
+ * strip away the remaining spaces (tabs stay!).
+ */
- /* Escaped whitespace. */
- if (i && ' ' == buf[i] && '\\' == buf[i - 1])
- continue;
+ i = (int)strlen(buf);
+ assert(i);
- buf[i++] = 0;
- if ( ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
- return(0);
+ if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
+ if (i > 1 && '\\' != buf[i - 2])
+ if ( ! man_pmsg(m, line, i - 1, MANDOCERR_EOLNSPACE))
+ return(0);
- for ( ; ' ' == buf[i]; i++)
- /* Skip trailing whitespace. */ ;
+ for (--i; i && ' ' == buf[i]; i--)
+ /* Spin back to non-space. */ ;
- j = i;
- if (0 == buf[i])
- break;
+ /* Jump ahead of escaped whitespace. */
+ i += '\\' == buf[i] ? 2 : 1;
+
+ buf[i] = '\0';
}
- if (j != i && ! pstring(m, line, j, &buf[j], (size_t)(i - j)))
+ if ( ! man_word_alloc(m, line, offs, buf + offs))
return(0);
-descope:
+ /*
+ * 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(i);
+ if (mandoc_eos(buf, (size_t)i))
+ m->last->flags |= MAN_EOS;
+
+descope:
/*
* Co-ordinate what happens with having a next-line scope open:
* first close out the element scope (if applicable), then close
if (MAN_ELINE & m->flags) {
m->flags &= ~MAN_ELINE;
- if ( ! man_unscope(m, m->last->parent))
+ if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
return(0);
}
return(1);
m->flags &= ~MAN_BLINE;
- if ( ! man_unscope(m, m->last->parent))
+ if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
return(0);
- return(man_body_alloc(m, line, 0, m->last->tok));
+ return(man_body_alloc(m, line, offs, m->last->tok));
}
static int
-macrowarn(struct man *m, int ln, const char *buf)
+macrowarn(struct man *m, int ln, const char *buf, int offs)
{
- if ( ! (MAN_IGN_MACRO & m->pflags))
- return(man_verr(m, ln, 0,
- "unknown macro: %s%s",
- buf, strlen(buf) > 3 ? "..." : ""));
- return(man_vwarn(m, ln, 0, "unknown macro: %s%s",
- buf, strlen(buf) > 3 ? "..." : ""));
+ int rc;
+
+ rc = man_vmsg(m, MANDOCERR_MACRO, ln, offs,
+ "unknown macro: %s%s",
+ buf, strlen(buf) > 3 ? "..." : "");
+
+ return(MAN_IGN_MACRO & m->pflags ? rc : 0);
}
int
-man_pmacro(struct man *m, int ln, char *buf)
+man_pmacro(struct man *m, int ln, char *buf, int offs)
{
- int i, j, c, ppos, fl;
+ int i, j, ppos;
+ enum mant tok;
char mac[5];
struct man_node *n;
/* Comments and empties are quickly ignored. */
- fl = m->flags;
+ offs++;
+
+ if ('\0' == buf[offs])
+ return(1);
- if (0 == buf[1])
- goto out;
+ i = offs;
- i = 1;
+ /*
+ * Skip whitespace between the control character and initial
+ * text. "Whitespace" is both spaces and tabs.
+ */
- if (' ' == buf[i]) {
+ if (' ' == buf[i] || '\t' == buf[i]) {
i++;
- while (buf[i] && ' ' == buf[i])
+ while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
i++;
- if (0 == buf[i])
+ if ('\0' == buf[i])
goto out;
}
/* Copy the first word into a nil-terminated buffer. */
for (j = 0; j < 4; j++, i++) {
- if (0 == (mac[j] = buf[i]))
+ if ('\0' == (mac[j] = buf[i]))
break;
else if (' ' == buf[i])
break;
if (isgraph((u_char)buf[i]))
continue;
- return(man_perr(m, ln, i, WNPRINT));
+ if ( ! man_pmsg(m, ln, i, MANDOCERR_BADCHAR))
+ return(0);
+ i--;
}
- mac[j] = 0;
+ mac[j] = '\0';
if (j == 4 || j < 1) {
- if ( ! (MAN_IGN_MACRO & m->pflags)) {
- (void)man_perr(m, ln, ppos, WMACROFORM);
- goto err;
- }
- if ( ! man_pwarn(m, ln, ppos, WMACROFORM))
+ if ( ! macrowarn(m, ln, mac, ppos))
goto err;
return(1);
}
- if (MAN_MAX == (c = man_hash_find(mac))) {
- if ( ! macrowarn(m, ln, mac))
+ if (MAN_MAX == (tok = man_hash_find(mac))) {
+ if ( ! macrowarn(m, ln, mac, ppos))
goto err;
return(1);
}
while (buf[i] && ' ' == buf[i])
i++;
- /* Remove prior ELINE macro, if applicable. */
+ /*
+ * Trailing whitespace. Note that tabs are allowed to be passed
+ * into the parser as "text", so we only warn about spaces here.
+ */
+
+ if ('\0' == buf[i] && ' ' == buf[i - 1])
+ if ( ! man_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE))
+ goto err;
+
+ /*
+ * Remove prior ELINE macro, as it's being clobbering by a new
+ * macro. Note that NSCOPED macros do not close out ELINE
+ * macros---they don't print text---so we let those slip by.
+ */
+
+ if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
+ m->flags & MAN_ELINE) {
+ assert(MAN_TEXT != m->last->type);
+
+ /*
+ * This occurs in the following construction:
+ * .B
+ * .br
+ * .B
+ * .br
+ * I hate man macros.
+ * Flat-out disallow this madness.
+ */
+ if (MAN_NSCOPED & man_macros[m->last->tok].flags) {
+ man_pmsg(m, ln, ppos, MANDOCERR_SYNTLINESCOPE);
+ return(0);
+ }
- if (m->flags & MAN_ELINE) {
n = m->last;
+
+ assert(n);
assert(NULL == n->child);
assert(0 == n->nchild);
- if ( ! man_nwarn(m, n, WLNSCOPE))
- return(0);
- if (n->prev) {
- assert(n != n->parent->child);
- assert(n == n->prev->next);
- n->prev->next = NULL;
- m->last = n->prev;
- m->next = MAN_NEXT_SIBLING;
- } else {
- assert(n == n->parent->child);
- n->parent->child = NULL;
- m->last = n->parent;
- m->next = MAN_NEXT_CHILD;
- }
+ if ( ! man_nmsg(m, n, MANDOCERR_LINESCOPE))
+ return(0);
- man_node_free(n);
+ man_node_delete(m, n);
m->flags &= ~MAN_ELINE;
}
- /* Begin recursive parse sequence. */
+ /*
+ * Save the fact that we're in the next-line for a block. In
+ * this way, embedded roff instructions can "remember" state
+ * when they exit.
+ */
+
+ if (MAN_BLINE & m->flags)
+ m->flags |= MAN_BPLINE;
- assert(man_macros[c].fp);
+ /* Call to handler... */
- if ( ! (*man_macros[c].fp)(m, c, ln, ppos, &i, buf))
+ assert(man_macros[tok].fp);
+ if ( ! (*man_macros[tok].fp)(m, tok, ln, ppos, &i, buf))
goto err;
out:
- if ( ! (MAN_BLINE & fl))
+ /*
+ * We weren't in a block-line scope when entering the
+ * above-parsed macro, so return.
+ */
+
+ if ( ! (MAN_BPLINE & m->flags)) {
+ m->flags &= ~MAN_ILINE;
return(1);
+ }
+ m->flags &= ~MAN_BPLINE;
+
+ /*
+ * If we're in a block scope, then allow this macro to slip by
+ * without closing scope around it.
+ */
+
+ if (MAN_ILINE & m->flags) {
+ m->flags &= ~MAN_ILINE;
+ return(1);
+ }
/*
* If we've opened a new next-line element scope, then return
assert(MAN_BLINE & m->flags);
m->flags &= ~MAN_BLINE;
- if ( ! man_unscope(m, m->last->parent))
+ if ( ! man_unscope(m, m->last->parent, MANDOCERR_MAX))
return(0);
- return(man_body_alloc(m, ln, 0, m->last->tok));
+ return(man_body_alloc(m, ln, offs, m->last->tok));
err: /* Error out. */
int
-man_verr(struct man *man, int ln, int pos, const char *fmt, ...)
+man_vmsg(struct man *man, enum mandocerr t,
+ int ln, int pos, const char *fmt, ...)
{
char buf[256];
va_list ap;
- if (NULL == man->cb.man_err)
- return(0);
-
va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
+ vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
va_end(ap);
- return((*man->cb.man_err)(man->data, ln, pos, buf));
+ return((*man->msg)(t, man->data, ln, pos, buf));
}
-int
-man_vwarn(struct man *man, int ln, int pos, const char *fmt, ...)
+/*
+ * Unlink a node from its context. If "m" is provided, the last parse
+ * point will also be adjusted accordingly.
+ */
+static void
+man_node_unlink(struct man *m, struct man_node *n)
{
- char buf[256];
- va_list ap;
- if (NULL == man->cb.man_warn)
- return(0);
+ /* Adjust siblings. */
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
- va_end(ap);
- return((*man->cb.man_warn)(man->data, ln, pos, buf));
-}
+ if (n->prev)
+ n->prev->next = n->next;
+ if (n->next)
+ n->next->prev = n->prev;
+ /* Adjust parent. */
-int
-man_err(struct man *m, int line, int pos, int iserr, enum merr type)
-{
- const char *p;
-
- p = __man_merrnames[(int)type];
- assert(p);
+ if (n->parent) {
+ n->parent->nchild--;
+ if (n->parent->child == n)
+ n->parent->child = n->prev ? n->prev : n->next;
+ }
- if (iserr)
- return(man_verr(m, line, pos, p));
+ /* Adjust parse point, if applicable. */
+
+ if (m && m->last == n) {
+ /*XXX: this can occur when bailing from validation. */
+ /*assert(NULL == n->next);*/
+ if (n->prev) {
+ m->last = n->prev;
+ m->next = MAN_NEXT_SIBLING;
+ } else {
+ m->last = n->parent;
+ m->next = MAN_NEXT_CHILD;
+ }
+ }
- return(man_vwarn(m, line, pos, p));
+ if (m && m->first == n)
+ m->first = NULL;
}
git.ckatri.com / mandoc.git / blobdiff