+ mdoc->meta.os = xstrdup(buf[0] ? buf : "LOCAL");
+ mdoc->lastnamed = SEC_BODY;
+
+ return(post_prologue(mdoc));
+}
+
+
+static int
+post_bl_tagwidth(struct mdoc *mdoc)
+{
+ struct mdoc_node *n;
+ struct mdoc_block *b;
+ int sz;
+ char buf[32];
+
+ /*
+ * If -tag has been specified and -width has not been, then try
+ * to intuit our width from the first body element.
+ */
+
+ b = &mdoc->last->data.block;
+
+ if (NULL == (n = b->body->child))
+ return(1);
+ assert(MDOC_It == n->tok);
+
+ /*
+ * Use the text width, if a text node, or the default macro
+ * width if a macro.
+ */
+
+ if ((n = n->data.block.head->child)) {
+ if (MDOC_TEXT != n->type) {
+ if (0 == (sz = mdoc_macro2len(n->tok)))
+ sz = -1;
+ } else
+ sz = (int)strlen(n->data.text.string) + 1;
+ } else
+ sz = -1;
+
+ if (-1 == sz) {
+ if ( ! mdoc_warn(mdoc, WARN_SYNTAX,
+ "cannot determine default %s",
+ mdoc_argnames[MDOC_Width]))
+ return(0);
+ sz = 10;
+ }
+
+ (void)snprintf(buf, sizeof(buf), "%dn", sz);
+
+ /*
+ * We have to dynamically add this to the macro's argument list.
+ * We're guaranteed that a MDOC_Width doesn't already exist.
+ */
+
+ (b->argc)++;
+ b->argv = xrealloc(b->argv, b->argc * sizeof(struct mdoc_arg));
+
+ b->argv[b->argc - 1].arg = MDOC_Width;
+ b->argv[b->argc - 1].line = mdoc->last->line;
+ b->argv[b->argc - 1].pos = mdoc->last->pos;
+ b->argv[b->argc - 1].sz = 1;
+ b->argv[b->argc - 1].value = xcalloc(1, sizeof(char *));
+ b->argv[b->argc - 1].value[0] = xstrdup(buf);
+
+ mdoc_msg(mdoc, "adding %s argument: %dn",
+ mdoc_argnames[MDOC_Width], sz);
+
+ return(1);
+}
+
+
+static int
+post_bl_width(struct mdoc *mdoc)
+{
+ size_t width;
+ int i, tok;
+ char buf[32];
+ char **p;
+
+ for (i = 0; i < (int)mdoc->last->data.block.argc; i++)
+ if (MDOC_Width == mdoc->last->data.block.argv[i].arg)
+ break;
+
+ assert(i < (int)mdoc->last->data.block.argc);
+ assert(1 == mdoc->last->data.block.argv[i].sz);
+ p = &mdoc->last->data.block.argv[i].value[0];
+
+ /*
+ * If the value to -width is a macro, then we re-write it to be
+ * the macro's width as set in share/tmac/mdoc/doc-common.
+ */
+
+ if (xstrcmp(*p, "Ds"))
+ width = 8;
+ else if (MDOC_MAX == (tok = mdoc_find(mdoc, *p)))
+ return(1);
+ else if (0 == (width = mdoc_macro2len(tok)))
+ return(mdoc_warn(mdoc, WARN_SYNTAX,
+ "%s macro has no length",
+ mdoc_argnames[MDOC_Width]));
+
+ mdoc_msg(mdoc, "re-writing %s argument: %s -> %zun",
+ mdoc_argnames[MDOC_Width], *p, width);
+
+ /* The value already exists: free and reallocate it. */
+
+ (void)snprintf(buf, sizeof(buf), "%zun", width);
+
+ free(*p);
+ *p = strdup(buf);
+
+ return(1);
+}
+
+
+static int
+post_bl(struct mdoc *mdoc)
+{
+ int i, r;
+
+ if (MDOC_BLOCK != mdoc->last->type)
+ return(1);
+
+ /*
+ * These are fairly complicated, so we've broken them into two
+ * functions. post_bl_tagwidth() is called when a -tag is
+ * specified, but no -width (it must be guessed). The second
+ * when a -width is specified (macro indicators must be
+ * rewritten into real lengths).
+ */
+
+ for (r = i = 0; i < (int)mdoc->last->data.block.argc; i++) {
+ if (MDOC_Tag == mdoc->last->data.block.argv[i].arg)
+ r |= 1 << 0;
+ if (MDOC_Width == mdoc->last->data.block.argv[i].arg)
+ r |= 1 << 1;
+ }
+
+ if (r & (1 << 0) && ! (r & (1 << 1))) {
+ if ( ! post_bl_tagwidth(mdoc))
+ return(0);
+ } else if (r & (1 << 1))
+ if ( ! post_bl_width(mdoc))
+ return(0);
+
git.ckatri.com / mandoc.git / blobdiff