Add --template functionality to -tlatex.

latex.c

@@ -32,10 +32,11 @@
 #include "extern.h"
 
 struct latex {
-	unsigned int	oflags; /* same as in lowdown_opts */
-	struct hentryq	headers_used; /* headers we've seen */
-	ssize_t		headers_offs; /* header offset */
-	size_t		footsz; /* current footnote */
+	unsigned int	 oflags; /* same as in lowdown_opts */
+	struct hentryq	 headers_used; /* headers we've seen */
+	ssize_t		 headers_offs; /* header offset */
+	size_t		 footsz; /* current footnote */
+	const char	*templ; /* output template */
 };
 
 /*
@@ -663,17 +664,8 @@ rndr_math(struct lowdown_buf *ob,
 }
 
 static int
-rndr_doc_footer(struct lowdown_buf *ob, const struct latex *st)
-{
-
-	if (st->oflags & LOWDOWN_STANDALONE)
-		return HBUF_PUTSL(ob, "\\end{document}\n");
-	return 1;
-}
-
-static int
-rndr_doc_header(const struct latex *st, struct lowdown_buf *ob,
-    const struct lowdown_metaq *mq)
+rndr_root(const struct latex *st, struct lowdown_buf *ob,
+    const struct lowdown_metaq *mq, const struct lowdown_buf *content)
 {
 	const struct lowdown_meta	*m;
 	const char			*author = NULL, *title = NULL,
@@ -682,7 +674,9 @@ rndr_doc_header(const struct latex *st, struct lowdown_buf *ob,
 					*rcsdate = NULL, *header = NULL;
 
 	if (!(st->oflags & LOWDOWN_STANDALONE))
-		return 1;
+		return hbuf_putb(ob, content);
+	if (st->templ != NULL)
+		return lowdown_template(st->templ, content, ob, mq);
 
 	TAILQ_FOREACH(m, mq, entries)
 		if (strcasecmp(m->key, "author") == 0)
@@ -789,7 +783,10 @@ rndr_doc_header(const struct latex *st, struct lowdown_buf *ob,
 	    !HBUF_PUTSL(ob, "\\maketitle\n"))
 		return 0;
 
-	return 1;
+	if (!hbuf_putb(ob, content))
+		return 0;
+
+	return HBUF_PUTSL(ob, "\\end{document}\n");
 }
 
 static int
@@ -850,6 +847,9 @@ rndr(struct lowdown_buf *ob,
 		if (!rndr_blockcode(ob, &n->rndr_blockcode))
 			return 0;
 		break;
+	case LOWDOWN_DOC_HEADER:
+		/* Don't output anything for this. */
+		break;
 	case LOWDOWN_BLOCKQUOTE:
 		if (!rndr_blockquote(ob, tmp))
 			return 0;
@@ -862,10 +862,6 @@ rndr(struct lowdown_buf *ob,
 		if (!rndr_definition_title(ob, tmp))
 			return 0;
 		break;
-	case LOWDOWN_DOC_HEADER:
-		if (!rndr_doc_header(st, ob, mq))
-			return 0;
-		break;
 	case LOWDOWN_META:
 		if (n->chng != LOWDOWN_CHNG_DELETE &&
 		    !rndr_meta(st, n, mq))
@@ -972,9 +968,7 @@ rndr(struct lowdown_buf *ob,
 			return 0;
 		break;
 	case LOWDOWN_ROOT:
-		if (!hbuf_putb(ob, tmp))
-			return 0;
-		if (!rndr_doc_footer(ob, st))
+		if (!rndr_root(st, ob, mq, tmp))
 			return 0;
 		break;
 	default:
@@ -1022,6 +1016,7 @@ lowdown_latex_new(const struct lowdown_opts *opts)
 		return NULL;
 
 	p->oflags = opts == NULL ? 0 : opts->oflags;
+	p->templ = opts == NULL ? NULL : opts->templ;
 	return p;
 }
 

man/lowdown-diff.1

@@ -200,7 +200,9 @@ See
 .Sx Templates .
 This is experimental functionality.
 Currently only for
-.Fl t Ns Ar html .
+.Fl t Ns Ar html
+and
+.Fl t Ns Ar latex .
 .El
 .Pp
 What follows are per-output long options.
@@ -927,6 +929,11 @@ The default template used if
 .Fl -template
 is not provided to
 .Fl t Ns Ar html .
+.It Pa share/latex/default.latex
+The default template used if
+.Fl -template
+is not provided to
+.Fl t Ns Ar latex .
 .It Pa share/odt/styles.xml
 Default styles used when generating standalone
 .Fl t Ns Ar fodt

man/lowdown.1

@@ -218,7 +218,9 @@ See
 .Sx Templates .
 This is experimental functionality.
 Currently only for
-.Fl t Ns Ar html .
+.Fl t Ns Ar html
+and
+.Fl t Ns Ar latex .
 .El
 .Pp
 What follows are per-output long options.
@@ -920,6 +922,11 @@ The default template used if
 .Fl -template
 is not provided to
 .Fl t Ns Ar html .
+.It Pa share/latex/default.latex
+The default template used if
+.Fl -template
+is not provided to
+.Fl t Ns Ar latex .
 .It Pa share/odt/styles.xml
 Default styles used when generating standalone
 .Fl t Ns Ar fodt

regress/diff/metadata-add.latex

@@ -23,7 +23,6 @@
 \title{}
 \author{kristaps}
 \maketitle
-
 \hypertarget{section}{%
 \section{section}\label{section}}
 

regress/diff/metadata-change.latex

@@ -23,7 +23,6 @@
 \title{}
 \author{shmistaps}
 \maketitle
-
 \hypertarget{section}{%
 \section{section}\label{section}}
 

regress/diff/metadata-remove.latex

@@ -20,7 +20,6 @@
 \usepackage{longtable}
 \usepackage{hyperref}
 \begin{document}
-
 \hypertarget{section}{%
 \section{section}\label{section}}
 

share/latex/default.latex

@@ -0,0 +1,31 @@
+% Options for packages loaded elsewhere
+\PassOptionsToPackage{unicode}{hyperref}
+\PassOptionsToPackage{hyphens}{url}
+%
+\documentclass[11pt,a4paper]{article}
+\usepackage{amsmath,amssymb}
+\usepackage{lmodern}
+\usepackage{iftex}
+\ifPDFTeX
+  \usepackage[T1]{fontenc}
+  \usepackage[utf8]{inputenc}
+  \usepackage{textcomp} % provide euro and other symbols
+\else % if luatex or xetex
+  \usepackage{unicode-math}
+  \defaultfontfeatures{Scale=MatchLowercase}
+  \defaultfontfeatures[\\rmfamily]{Ligatures=TeX,Scale=1}
+\fi
+\usepackage{xcolor}
+\usepackage{graphicx}
+\usepackage{longtable}
+\usepackage{hyperref}
+$latexheader$
+\begin{document}
+$ifdef(or(title,author,date))$\title{$title.escapelatex$}$endif$
+$ifdef(author)$
+\author{$author.escapelatex$$ifdef(affiliation)$ \\ $affiliation.escapelatex$$endif$}
+$endif$
+$ifdef(date)$\date{$date.escapelatex$}$endif$
+$ifdef(or(title,author,date))$\maketitle$endif$
+$body$
+\end{document}