-/* $Id: mdoc.c,v 1.77 2009/06/12 12:52:51 kristaps Exp $ */
+/* $Id: mdoc.c,v 1.127 2010/05/08 10:25:27 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 <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
#include "libmdoc.h"
-
-enum merr {
- ENOCALL,
- EBODYPROL,
- EPROLBODY,
- ESPACE,
- ETEXTPROL,
- ENOBLANK,
- EMALLOC
+#include "libmandoc.h"
+
+const char *const __mdoc_merrnames[MERRMAX] = {
+ "trailing whitespace", /* ETAILWS */
+ "unexpected quoted parameter", /* EQUOTPARM */
+ "unterminated quoted parameter", /* EQUOTTERM */
+ "argument parameter suggested", /* EARGVAL */
+ "macro disallowed in prologue", /* EBODYPROL */
+ "macro disallowed in body", /* EPROLBODY */
+ "text disallowed in prologue", /* ETEXTPROL */
+ "blank line disallowed", /* ENOBLANK */
+ "text parameter too long", /* ETOOLONG */
+ "invalid escape sequence", /* EESCAPE */
+ "invalid character", /* EPRINT */
+ "document has no body", /* ENODAT */
+ "document has no prologue", /* ENOPROLOGUE */
+ "expected line arguments", /* ELINE */
+ "invalid AT&T argument", /* EATT */
+ "default name not yet set", /* ENAME */
+ "missing list type", /* ELISTTYPE */
+ "missing display type", /* EDISPTYPE */
+ "too many display types", /* EMULTIDISP */
+ "too many list types", /* EMULTILIST */
+ "NAME section must be first", /* ESECNAME */
+ "badly-formed NAME section", /* ENAMESECINC */
+ "argument repeated", /* EARGREP */
+ "expected boolean parameter", /* EBOOL */
+ "inconsistent column syntax", /* ECOLMIS */
+ "nested display invalid", /* ENESTDISP */
+ "width argument missing", /* EMISSWIDTH */
+ "invalid section for this manual section", /* EWRONGMSEC */
+ "section out of conventional order", /* ESECOOO */
+ "section repeated", /* ESECREP */
+ "invalid standard argument", /* EBADSTAND */
+ "multi-line arguments discouraged", /* ENOMULTILINE */
+ "multi-line arguments suggested", /* EMULTILINE */
+ "line arguments discouraged", /* ENOLINE */
+ "prologue macro out of conventional order", /* EPROLOOO */
+ "prologue macro repeated", /* EPROLREP */
+ "invalid manual section", /* EBADMSEC */
+ "invalid section", /* EBADSEC */
+ "invalid font mode", /* EFONT */
+ "invalid date syntax", /* EBADDATE */
+ "invalid number format", /* ENUMFMT */
+ "superfluous width argument", /* ENOWIDTH */
+ "system: utsname error", /* EUTSNAME */
+ "obsolete macro", /* EOBS */
+ "end-of-line scope violation", /* EIMPBRK */
+ "empty macro ignored", /* EIGNE */
+ "unclosed explicit scope", /* EOPEN */
+ "unterminated quoted phrase", /* EQUOTPHR */
+ "closure macro without prior context", /* ENOCTX */
+ "no description found for library", /* ELIB */
+ "bad child for parent context", /* EBADCHILD */
+ "list arguments preceding type", /* ENOTYPE */
+ "deprecated comment style", /* EBADCOMMENT */
};
const char *const __mdoc_macronames[MDOC_MAX] = {
- "\\\"", "Dd", "Dt", "Os",
+ "Ap", "Dd", "Dt", "Os",
"Sh", "Ss", "Pp", "D1",
"Dl", "Bd", "Ed", "Bl",
"El", "It", "Ad", "An",
"Nm", "Op", "Ot", "Pa",
"Rv", "St", "Va", "Vt",
/* LINTED */
- "Xr", "\%A", "\%B", "\%D",
+ "Xr", "%A", "%B", "%D",
/* LINTED */
- "\%I", "\%J", "\%N", "\%O",
+ "%I", "%J", "%N", "%O",
/* LINTED */
- "\%P", "\%R", "\%T", "\%V",
+ "%P", "%R", "%T", "%V",
"Ac", "Ao", "Aq", "At",
"Bc", "Bf", "Bo", "Bq",
"Bsx", "Bx", "Db", "Dc",
"Tn", "Ux", "Xc", "Xo",
"Fo", "Fc", "Oo", "Oc",
"Bk", "Ek", "Bt", "Hf",
- "Fr", "Ud", "Lb", "Ap",
- "Lp", "Lk", "Mt", "Brq",
+ "Fr", "Ud", "Lb", "Lp",
+ "Lk", "Mt", "Brq", "Bro",
/* LINTED */
- "Bro", "Brc", "\%C", "Es",
+ "Brc", "%C", "Es", "En",
/* LINTED */
- "En", "Dx", "\%Q"
+ "Dx", "%Q", "br", "sp",
+ /* LINTED */
+ "%U"
};
const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
"ohang", "inset", "column",
"width", "compact", "std",
"filled", "words", "emphasis",
- "symbolic", "nested"
+ "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 int mdoc_alloc1(struct mdoc *);
+static void mdoc_alloc1(struct mdoc *);
static struct mdoc_node *node_alloc(struct mdoc *, int, int,
- int, enum mdoc_type);
+ enum mdoct, 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 mdoc_ptext(struct mdoc *, int, char *);
+static int mdoc_pmacro(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)
{
}
+/*
+ * Frees volatile resources (parse tree, meta-data, fields).
+ */
static void
mdoc_free1(struct mdoc *mdoc)
{
if (mdoc->first)
- mdoc_node_freelist(mdoc->first);
+ mdoc_node_delete(mdoc, mdoc->first);
if (mdoc->meta.title)
free(mdoc->meta.title);
if (mdoc->meta.os)
}
-static int
+/*
+ * Allocate all volatile resources (parse tree, meta-data, fields).
+ */
+static void
mdoc_alloc1(struct mdoc *mdoc)
{
- bzero(&mdoc->meta, sizeof(struct mdoc_meta));
+ memset(&mdoc->meta, 0, 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->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;
- 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.
+ * 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.
*/
-int
+void
mdoc_reset(struct mdoc *mdoc)
{
mdoc_free1(mdoc);
- return(mdoc_alloc1(mdoc));
+ mdoc_alloc1(mdoc);
}
/*
- * Completely free up all resources.
+ * 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);
- if (mdoc->htab)
- mdoc_hash_free(mdoc->htab);
free(mdoc);
}
+/*
+ * Allocate volatile and non-volatile parse resources.
+ */
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);
+ p = mandoc_calloc(1, sizeof(struct mdoc));
+
if (cb)
- (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
+ 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);
+ 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.
+ * through to macro_end() in macro.c.
*/
int
mdoc_endparse(struct mdoc *m)
/*
* 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)
{
- /* If in error-mode, then we parse no more. */
-
if (MDOC_HALT & m->flags)
return(0);
- return('.' == *buf ? parsemacro(m, ln, buf) :
- parsetext(m, ln, buf));
-}
-
-
-void
-mdoc_vmsg(struct mdoc *mdoc, int ln, 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, ln, pos, buf);
+ return('.' == *buf ? mdoc_pmacro(m, ln, buf) :
+ mdoc_ptext(m, ln, buf));
}
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, ...)
+mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...)
{
char buf[256];
va_list ap;
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));
+
+ return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, buf));
}
int
-mdoc_macro(struct mdoc *m, int tok,
- int ln, int pp, int *pos, char *buf)
+mdoc_err(struct mdoc *m, int line, int pos, int iserr, enum merr type)
{
+ const char *p;
- /* FIXME - these should happen during validation. */
-
- if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
- SEC_PROLOGUE != m->lastnamed)
- return(perr(m, ln, pp, EPROLBODY));
-
- if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
- SEC_PROLOGUE == m->lastnamed)
- return(perr(m, ln, pp, EBODYPROL));
+ p = __mdoc_merrnames[(int)type];
+ assert(p);
- if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
- return(perr(m, ln, pp, ENOCALL));
+ if (iserr)
+ return(mdoc_verr(m, line, pos, p));
- return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
+ return(mdoc_vwarn(m, line, pos, p));
}
-static int
-perr(struct mdoc *m, int line, int pos, enum merr type)
+int
+mdoc_macro(struct mdoc *m, enum mdoct tok,
+ int ln, int pp, int *pos, char *buf)
{
- char *p;
+ assert(tok < MDOC_MAX);
- 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";
- 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";
- break;
+ /* If we're in the body, deny prologue calls. */
+
+ if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
+ MDOC_PBODY & m->flags)
+ return(mdoc_perr(m, ln, pp, EPROLBODY));
+
+ /* If we're in the prologue, deny "body" macros. */
+
+ if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
+ ! (MDOC_PBODY & m->flags)) {
+ if ( ! mdoc_pwarn(m, ln, pp, EBODYPROL))
+ 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;
}
- assert(p);
- return(mdoc_perr(m, line, pos, p));
+
+ return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
}
/* NOTREACHED */
}
+ p->parent->nchild++;
+
if ( ! mdoc_valid_pre(mdoc, p))
return(0);
if ( ! mdoc_action_pre(mdoc, p))
static struct mdoc_node *
-node_alloc(struct mdoc *mdoc, int line,
- int pos, int tok, enum mdoc_type type)
+node_alloc(struct mdoc *m, int line, int pos,
+ enum mdoct tok, enum mdoc_type type)
{
struct mdoc_node *p;
- if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
- (void)verr(mdoc, EMALLOC);
- return(NULL);
- }
-
- p->sec = mdoc->lastsec;
+ p = mandoc_calloc(1, sizeof(struct mdoc_node));
+ p->sec = m->lastsec;
p->line = line;
p->pos = pos;
p->tok = tok;
- if (MDOC_TEXT != (p->type = type))
- assert(p->tok >= 0);
+ p->type = type;
return(p);
}
int
-mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
+mdoc_tail_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
{
struct mdoc_node *p;
- p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
- if (NULL == p)
+ p = node_alloc(m, line, pos, tok, MDOC_TAIL);
+ if ( ! node_append(m, p))
return(0);
- return(node_append(mdoc, p));
+ m->next = MDOC_NEXT_CHILD;
+ return(1);
}
int
-mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
+mdoc_head_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
{
struct mdoc_node *p;
- assert(mdoc->first);
- assert(mdoc->last);
+ assert(m->first);
+ assert(m->last);
- p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
- if (NULL == p)
+ p = node_alloc(m, line, pos, tok, MDOC_HEAD);
+ if ( ! node_append(m, p))
return(0);
- return(node_append(mdoc, p));
+ m->next = MDOC_NEXT_CHILD;
+ return(1);
}
int
-mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
+mdoc_body_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
{
struct mdoc_node *p;
- p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
- if (NULL == p)
+ p = node_alloc(m, line, pos, tok, MDOC_BODY);
+ if ( ! node_append(m, p))
return(0);
- return(node_append(mdoc, p));
+ m->next = MDOC_NEXT_CHILD;
+ return(1);
}
int
-mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
- int tok, struct mdoc_arg *args)
+mdoc_block_alloc(struct mdoc *m, int line, int pos,
+ enum mdoct tok, struct mdoc_arg *args)
{
struct mdoc_node *p;
- p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
- if (NULL == p)
- return(0);
+ p = node_alloc(m, line, pos, tok, MDOC_BLOCK);
p->args = args;
if (p->args)
(args->refcnt)++;
- return(node_append(mdoc, p));
+ if ( ! node_append(m, p))
+ return(0);
+ m->next = MDOC_NEXT_CHILD;
+ return(1);
}
int
-mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
- int tok, struct mdoc_arg *args)
+mdoc_elem_alloc(struct mdoc *m, int line, int pos,
+ enum mdoct tok, struct mdoc_arg *args)
{
struct mdoc_node *p;
- p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
- if (NULL == p)
- return(0);
+ p = node_alloc(m, line, pos, tok, MDOC_ELEM);
p->args = args;
if (p->args)
(args->refcnt)++;
- return(node_append(mdoc, p));
+ if ( ! node_append(m, p))
+ return(0);
+ m->next = MDOC_NEXT_CHILD;
+ return(1);
}
int
-mdoc_word_alloc(struct mdoc *mdoc,
- int line, int pos, const char *word)
+mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
{
- struct mdoc_node *p;
+ struct mdoc_node *n;
+ size_t sv, len;
- p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
- if (NULL == p)
- return(0);
- if (NULL == (p->string = strdup(word))) {
- (void)verr(mdoc, EMALLOC);
+ 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);
- }
- return(node_append(mdoc, p));
+
+ m->next = MDOC_NEXT_SIBLING;
+ return(1);
}
}
+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_freelist(struct mdoc_node *p)
+mdoc_node_delete(struct mdoc *m, struct mdoc_node *p)
{
- if (p->child)
- mdoc_node_freelist(p->child);
- if (p->next)
- mdoc_node_freelist(p->next);
+ while (p->child) {
+ assert(p->nchild);
+ mdoc_node_delete(m, p->child);
+ }
+ assert(0 == p->nchild);
+ mdoc_node_unlink(m, p);
mdoc_node_free(p);
}
* control character.
*/
static int
-parsetext(struct mdoc *m, int line, char *buf)
+mdoc_ptext(struct mdoc *m, int line, char *buf)
{
+ int i;
- if (SEC_PROLOGUE == m->lastnamed)
- return(perr(m, line, 0, ETEXTPROL));
+ /* Ignore bogus comments. */
- if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
- return(perr(m, line, 0, ENOBLANK));
+ if ('\\' == buf[0] && '.' == buf[1] && '\"' == buf[2])
+ return(mdoc_pwarn(m, line, 0, EBADCOMMENT));
- if ( ! mdoc_word_alloc(m, line, 0, buf))
- return(0);
+ /* No text before an initial macro. */
- m->next = MDOC_NEXT_SIBLING;
- return(1);
+ if (SEC_NONE == m->lastnamed)
+ return(mdoc_perr(m, line, 0, ETEXTPROL));
+
+ /* Literal just gets pulled in as-is. */
+
+ if (MDOC_LITERAL & m->flags)
+ return(mdoc_word_alloc(m, line, 0, buf));
+
+ /* Check for a blank line, which may also consist of spaces. */
+
+ for (i = 0; ' ' == buf[i]; i++)
+ /* Skip to first non-space. */ ;
+
+ if ('\0' == buf[i]) {
+ if ( ! mdoc_pwarn(m, line, 0, ENOBLANK))
+ 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, 0, MDOC_Pp, NULL))
+ return(0);
+
+ m->next = MDOC_NEXT_SIBLING;
+ return(1);
+ }
+
+ /*
+ * Warn if the last un-escaped character is whitespace. Then
+ * strip away the remaining spaces (tabs stay!).
+ */
+
+ i = (int)strlen(buf);
+ assert(i);
+
+ if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
+ if (i > 1 && '\\' != buf[i - 2])
+ if ( ! mdoc_pwarn(m, line, i - 1, ETAILWS))
+ return(0);
+
+ for (--i; i && ' ' == buf[i]; i--)
+ /* Spin back to non-space. */ ;
+
+ /* Jump ahead of escaped whitespace. */
+ i += '\\' == buf[i] ? 2 : 1;
+
+ buf[i] = '\0';
+ }
+
+ /* Allocate the whole word. */
+
+ return(mdoc_word_alloc(m, line, 0, buf));
}
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",
+ return(mdoc_verr(m, ln, 0, "unknown macro: %s%s",
buf, strlen(buf) > 3 ? "..." : ""));
- return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
- "unknown macro: %s%s",
+ return(mdoc_vwarn(m, ln, 0, "unknown macro: %s%s",
buf, strlen(buf) > 3 ? "..." : ""));
}
-
/*
* Parse a macro line, that is, a line beginning with the control
* character.
*/
int
-parsemacro(struct mdoc *m, int ln, char *buf)
+mdoc_pmacro(struct mdoc *m, int ln, char *buf)
{
- int i, c;
- char mac[5];
+ enum mdoct tok;
+ int i, j;
+ char mac[5];
- /* Comments and empties are quickly ignored. */
+ /* Empty lines are ignored. */
- if (0 == buf[1])
+ if ('\0' == buf[1])
return(1);
- if (' ' == buf[1]) {
- i = 2;
+ i = 1;
+
+ /* Accept whitespace after the initial control char. */
+
+ if (' ' == buf[i]) {
+ i++;
while (buf[i] && ' ' == buf[i])
i++;
- if (0 == buf[i])
+ if ('\0' == buf[i])
return(1);
- return(perr(m, ln, 1, ESPACE));
}
- 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]))
+ for (j = 0; j < 4; j++, i++) {
+ if ('\0' == (mac[j] = buf[i]))
break;
else if (' ' == buf[i])
break;
+
+ /* Check for invalid characters. */
+
+ if (isgraph((u_char)buf[i]))
+ continue;
+ return(mdoc_perr(m, ln, i, EPRINT));
}
- mac[i - 1] = 0;
+ mac[j] = 0;
- if (i == 5 || i <= 2) {
+ if (j == 4 || j < 2) {
if ( ! macrowarn(m, ln, mac))
goto err;
return(1);
}
- if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
+ if (MDOC_MAX == (tok = mdoc_hash_find(mac))) {
if ( ! macrowarn(m, ln, mac))
goto err;
return(1);
while (buf[i] && ' ' == buf[i])
i++;
- /* Begin recursive parse sequence. */
+ /*
+ * Trailing whitespace. Note that tabs are allowed to be passed
+ * into the parser as "text", so we only warn about spaces here.
+ */
- if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
+ if ('\0' == buf[i] && ' ' == buf[i - 1])
+ if ( ! mdoc_pwarn(m, ln, i - 1, ETAILWS))
+ goto err;
+
+ /*
+ * 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, 1, &i, buf))
goto err;
return(1);
m->flags |= MDOC_HALT;
return(0);
}
+
+
git.ckatri.com / mandoc.git / blobdiff