-/* $Id: mdoc.c,v 1.52 2009/03/06 14:13:47 kristaps Exp $ */
+/* $Id: mdoc.c,v 1.54 2009/03/08 12:40:27 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* in macro.c and validate.c.
*/
-static struct mdoc_arg *argdup(size_t, const struct mdoc_arg *);
-static void argfree(size_t, struct mdoc_arg *);
-static void argcpy(struct mdoc_arg *,
- const struct mdoc_arg *);
-
static struct mdoc_node *mdoc_node_alloc(const struct mdoc *);
static int mdoc_node_append(struct mdoc *,
struct mdoc_node *);
-static void mdoc_elem_free(struct mdoc_elem *);
-static void mdoc_text_free(struct mdoc_text *);
+
+static int parsetext(struct mdoc *, int, char *);
+static int parsemacro(struct mdoc *, int, char *);
const char *const __mdoc_macronames[MDOC_MAX] = {
/*
- * Main line-parsing routine. If the line is a macro-line (started with
- * a '.' control character), then pass along to the parser, which parses
- * subsequent macros until the end of line. If normal text, simply
- * append the entire line to the chain.
+ * Main parse routine. Parses a single line -- really just hands off to
+ * the macro or text parser.
*/
int
-mdoc_parseln(struct mdoc *mdoc, int line, char *buf)
+mdoc_parseln(struct mdoc *m, int ln, char *buf)
{
- int c, i;
- char tmp[5];
-
- if (MDOC_HALT & mdoc->flags)
- return(0);
-
- mdoc->linetok = 0;
-
- if ('.' != *buf) {
- /*
- * Free-form text. Not allowed in the prologue.
- */
- if (SEC_PROLOGUE == mdoc->lastnamed)
- return(mdoc_perr(mdoc, line, 0,
- "no text in prologue"));
-
- if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
- return(0);
- mdoc->next = MDOC_NEXT_SIBLING;
- return(1);
- }
-
- /*
- * Control-character detected. Begin the parsing sequence.
- */
-
- if (buf[1] && '\\' == buf[1])
- if (buf[2] && '\"' == buf[2])
- return(1);
-
- i = 1;
- while (buf[i] && ! isspace((u_char)buf[i]) &&
- i < (int)sizeof(tmp))
- i++;
-
- if (i == (int)sizeof(tmp)) {
- mdoc->flags |= MDOC_HALT;
- return(mdoc_perr(mdoc, line, 1, "unknown macro"));
- } else if (i <= 2) {
- mdoc->flags |= MDOC_HALT;
- return(mdoc_perr(mdoc, line, 1, "unknown macro"));
- }
- i--;
+ /* If in error-mode, then we parse no more. */
- (void)memcpy(tmp, buf + 1, (size_t)i);
- tmp[i++] = 0;
-
- if (MDOC_MAX == (c = mdoc_find(mdoc, tmp))) {
- mdoc->flags |= MDOC_HALT;
- return(mdoc_perr(mdoc, line, 1, "unknown macro"));
- }
-
- while (buf[i] && isspace((u_char)buf[i]))
- i++;
-
- if ( ! mdoc_macro(mdoc, c, line, 1, &i, buf)) {
- mdoc->flags |= MDOC_HALT;
+ if (MDOC_HALT & m->flags)
return(0);
- }
- return(1);
+ return('.' == *buf ? parsemacro(m, ln, buf) :
+ parsetext(m, ln, buf));
}
int
-mdoc_macro(struct mdoc *mdoc, int tok,
- int ln, int ppos, int *pos, char *buf)
+mdoc_macro(struct mdoc *m, int tok,
+ int ln, int pp, int *pos, char *buf)
{
- assert(mdoc_macros[tok].fp);
+ /* FIXME - these should happen during validation. */
if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
- SEC_PROLOGUE != mdoc->lastnamed)
- return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document body"));
+ SEC_PROLOGUE != m->lastnamed)
+ return(mdoc_perr(m, ln, pp,
+ "disallowed in document body"));
+
if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
- SEC_PROLOGUE == mdoc->lastnamed)
- return(mdoc_perr(mdoc, ln, ppos, "macro disallowed in document prologue"));
- if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
- return(mdoc_perr(mdoc, ln, ppos, "macro not callable"));
- return((*mdoc_macros[tok].fp)(mdoc, tok, ln, ppos, pos, buf));
+ SEC_PROLOGUE == m->lastnamed)
+ return(mdoc_perr(m, ln, pp,
+ "disallowed in prologue"));
+
+ if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
+ return(mdoc_perr(m, ln, pp, "not callable"));
+
+ return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
}
assert(mdoc->first);
assert(MDOC_ROOT != p->type);
- /* See if we exceed the suggest line-max. */
-
- switch (p->type) {
- case (MDOC_TEXT):
- /* FALLTHROUGH */
- case (MDOC_ELEM):
- /* FALLTHROUGH */
- case (MDOC_BLOCK):
- mdoc->linetok++;
- break;
- default:
- break;
- }
-
- /* This sort-of works (re-opening of text macros...). */
- if (mdoc->linetok > MDOC_LINEARG_SOFTMAX)
- if ( ! mdoc_nwarn(mdoc, p, WARN_COMPAT,
- "suggested %d tokens per line exceeded (has %d)",
- MDOC_LINEARG_SOFTMAX, mdoc->linetok))
- return(0);
-
switch (mdoc->next) {
case (MDOC_NEXT_SIBLING):
mdoc->last->next = p;
switch (p->type) {
case (MDOC_HEAD):
assert(MDOC_BLOCK == p->parent->type);
- p->parent->data.block.head = p;
+ p->parent->head = p;
break;
case (MDOC_TAIL):
assert(MDOC_BLOCK == p->parent->type);
- p->parent->data.block.tail = p;
+ p->parent->tail = p;
break;
case (MDOC_BODY):
assert(MDOC_BLOCK == p->parent->type);
- p->parent->data.block.body = p;
+ p->parent->body = p;
break;
default:
break;
int
mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
- int tok, size_t argsz, const struct mdoc_arg *args)
+ int tok, struct mdoc_arg *args)
{
struct mdoc_node *p;
p->line = line;
p->type = MDOC_BLOCK;
p->tok = tok;
- p->data.block.argc = argsz;
- p->data.block.argv = argdup(argsz, args);
+ p->args = args;
+
+ if (args)
+ (args->refcnt)++;
return(mdoc_node_append(mdoc, p));
}
int
mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
- int tok, size_t argsz, const struct mdoc_arg *args)
+ int tok, struct mdoc_arg *args)
{
struct mdoc_node *p;
p->pos = pos;
p->type = MDOC_ELEM;
p->tok = tok;
- p->data.elem.argc = argsz;
- p->data.elem.argv = argdup(argsz, args);
+ p->args = args;
+
+ if (args)
+ (args->refcnt)++;
return(mdoc_node_append(mdoc, p));
}
p->line = line;
p->pos = pos;
p->type = MDOC_TEXT;
- p->data.text.string = xstrdup(word);
+ p->string = xstrdup(word);
return(mdoc_node_append(mdoc, p));
}
-static void
-argfree(size_t sz, struct mdoc_arg *p)
-{
- int i, j;
-
- if (0 == sz)
- return;
-
- assert(p);
- /* LINTED */
- for (i = 0; i < (int)sz; i++)
- if (p[i].sz > 0) {
- assert(p[i].value);
- /* LINTED */
- for (j = 0; j < (int)p[i].sz; j++)
- free(p[i].value[j]);
- free(p[i].value);
- }
- free(p);
-}
-
-
-static void
-mdoc_elem_free(struct mdoc_elem *p)
-{
-
- argfree(p->argc, p->argv);
-}
-
-
-static void
-mdoc_block_free(struct mdoc_block *p)
-{
-
- argfree(p->argc, p->argv);
-}
-
-
-static void
-mdoc_text_free(struct mdoc_text *p)
-{
-
- if (p->string)
- free(p->string);
-}
-
-
void
mdoc_node_free(struct mdoc_node *p)
{
- switch (p->type) {
- case (MDOC_TEXT):
- mdoc_text_free(&p->data.text);
- break;
- case (MDOC_ELEM):
- mdoc_elem_free(&p->data.elem);
- break;
- case (MDOC_BLOCK):
- mdoc_block_free(&p->data.block);
- break;
- default:
- break;
- }
-
+ if (p->string)
+ free(p->string);
+ if (p->args)
+ mdoc_argv_free(p->args);
free(p);
}
}
-int
-mdoc_find(const struct mdoc *mdoc, const char *key)
+/*
+ * Parse free-form text, that is, a line that does not begin with the
+ * control character.
+ */
+static int
+parsetext(struct mdoc *mdoc, int line, char *buf)
{
- return(mdoc_tokhash_find(mdoc->htab, key));
+ if (SEC_PROLOGUE == mdoc->lastnamed)
+ return(mdoc_perr(mdoc, line, 0,
+ "text disallowed in prologue"));
+
+ if ( ! mdoc_word_alloc(mdoc, line, 0, buf))
+ return(0);
+
+ mdoc->next = MDOC_NEXT_SIBLING;
+ return(1);
}
-static void
-argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src)
+/*
+ * Parse a macro line, that is, a line beginning with the control
+ * character.
+ */
+int
+parsemacro(struct mdoc *m, int ln, char *buf)
{
- int i;
+ int i, c;
+ char mac[5];
- dst->line = src->line;
- dst->pos = src->pos;
- dst->arg = src->arg;
- if (0 == (dst->sz = src->sz))
- return;
- dst->value = xcalloc(dst->sz, sizeof(char *));
- for (i = 0; i < (int)dst->sz; i++)
- dst->value[i] = xstrdup(src->value[i]);
-}
+ /* Comments are quickly ignored. */
+ if (buf[1] && '\\' == buf[1])
+ if (buf[2] && '\"' == buf[2])
+ return(1);
-static struct mdoc_arg *
-argdup(size_t argsz, const struct mdoc_arg *args)
-{
- struct mdoc_arg *pp;
- int i;
+ /* Copy the first word into a nil-terminated buffer. */
- if (0 == argsz)
- return(NULL);
+ for (i = 1; i < 5; i++) {
+ if (0 == (mac[i - 1] = buf[i]))
+ break;
+ else if (isspace((unsigned char)buf[i]))
+ break;
+ }
- pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg));
- for (i = 0; i < (int)argsz; i++)
- argcpy(&pp[i], &args[i]);
+ /* FIXME: be able to skip unknown macro lines! */
- return(pp);
-}
+ mac[i - 1] = 0;
+
+ if (i == 5 || i <= 2) {
+ (void)mdoc_perr(m, ln, 1, "unknown macro: %s%s",
+ mac, i == 5 ? "..." : "");
+ goto err;
+ }
+
+ if (MDOC_MAX == (c = mdoc_tokhash_find(m->htab, mac))) {
+ (void)mdoc_perr(m, ln, 1, "unknown macro: %s", mac);
+ goto err;
+ }
+
+ /* The macro is sane. Jump to the next word. */
+
+ while (buf[i] && isspace((unsigned char)buf[i]))
+ i++;
+ /* Begin recursive parse sequence. */
+
+ if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
+ goto err;
+
+ return(1);
+
+err: /* Error out. */
+
+ m->flags |= MDOC_HALT;
+ return(0);
+}
git.ckatri.com / mandoc.git / blobdiff