commit 0fe9ac228cc8e9b9115a6b613ddbb87589335180
from: Omar Polo <op@omarpolo.com>
date: Mon Jun 03 11:15:54 2024 UTC

parsers: add a parseline method

all our parsers just need a line to parse and don't always need the
free method.  The gemtext parser could also be simplified with this,
but defer it for later.

commit - ef1a5eb9f7f71d8d27af99f0766c5d5d9dba62f2
commit + 0fe9ac228cc8e9b9115a6b613ddbb87589335180
blob - 792a676e94ed7fc9dbe717a6bbc97d808856896f
blob + 4e45c652434cb4ffda798cc764d23dcb0fc2bf1d
--- parser.c
+++ parser.c
@@ -34,7 +34,11 @@ parser_init(struct tab *tab, parserfn fn)
 int
 parser_parse(struct tab *tab, const char *chunk, size_t len)
 {
-	return tab->buffer.page.parse(&tab->buffer.page, chunk, len);
+	struct parser *p = &tab->buffer.page;
+
+	if (p->parse)
+		return p->parse(p, chunk, len);
+	return parser_foreach_line(p, chunk, len, p->parseline);
 }
 
 int
@@ -59,12 +63,21 @@ parser_parsef(struct tab *tab, const char *fmt, ...)
 int
 parser_free(struct tab *tab)
 {
-	int	 r;
-	char	*tilde, *slash;
+	struct parser	*p = &tab->buffer.page;
+	int		 r = 1;
+	char		*tilde, *slash;
 
-	r = tab->buffer.page.free(&tab->buffer.page);
+	if (p->free) {
+		r = p->free(p);
+	} else if (p->len != 0) {
+		if (p->parse)
+			r = p->parse(p, p->buf, p->len);
+		else
+			r = parser_foreach_line(p, p->buf, p->len,
+			    p->parseline);
+	}
 
-	if (*tab->buffer.page.title != '\0')
+	if (*p->title != '\0')
 		return r;
 
 	/*
@@ -72,14 +85,12 @@ parser_free(struct tab *tab)
 	 * page title, using the full domain name as fallback.
 	 */
 	if ((tilde = strstr(hist_cur(tab->hist), "/~")) != NULL) {
-		strlcpy(tab->buffer.page.title, tilde+1,
-		    sizeof(tab->buffer.page.title));
+		strlcpy(p->title, tilde+1, sizeof(p->title));
 
-		if ((slash = strchr(tab->buffer.page.title, '/')) != NULL)
+		if ((slash = strchr(p->title, '/')) != NULL)
 			*slash = '\0';
 	} else
-		strlcpy(tab->buffer.page.title, tab->iri.iri_host,
-		    sizeof(tab->buffer.page.title));
+		strlcpy(p->title, tab->iri.iri_host, sizeof(p->title));
 
 	return r;
 }
blob - b0d9ca3a298cb4d901692cd4e411de3f15072874
blob + bbec8913bcd5b600485f55b4caa29c553af7d851
--- parser_gemtext.c
+++ parser_gemtext.c
@@ -47,9 +47,9 @@ static int	parse_pre_cnt(struct parser*, enum line_typ
 static int	parse_pre_end(struct parser*, enum line_type, const char*, size_t);
 static void	search_title(struct parser*, enum line_type);
 
-typedef int (parselinefn)(struct parser*, enum line_type, const char*, size_t);
+typedef int (plinefn)(struct parser*, enum line_type, const char*, size_t);
 
-static parselinefn *parsers[] = {
+static plinefn *parsers[] = {
 	[LINE_TEXT]		= parse_text,
 	[LINE_LINK]		= parse_link,
 	[LINE_TITLE_1]		= parse_title,
blob - ba333328471a966bb716d45587b30befead9bf0d
blob + 6e951cadd8be59d8108eb6c9052b287e250ad451
--- parser_gophermap.c
+++ parser_gophermap.c
@@ -38,9 +38,7 @@ struct gm_selector {
 
 static void	gm_parse_selector(char *, struct gm_selector *);
 
-static int	gm_parse(struct parser *, const char *, size_t);
-static int	gm_foreach_line(struct parser *, const char *, size_t);
-static int	gm_free(struct parser *);
+static int	gm_parse_line(struct parser *, const char *, size_t);
 static int	gm_serialize(struct parser *, FILE *);
 
 void
@@ -49,8 +47,7 @@ gophermap_initparser(struct parser *p)
 	memset(p, 0, sizeof(*p));
 
 	p->name = "gophermap";
-	p->parse = &gm_parse;
-	p->free = &gm_free;
+	p->parseline = &gm_parse_line;
 	p->serialize = &gm_serialize;
 
 	TAILQ_INIT(&p->head);
@@ -82,12 +79,6 @@ gm_parse_selector(char *line, struct gm_selector *s)
 }
 
 static int
-gm_parse(struct parser *p, const char *buf, size_t size)
-{
-	return parser_foreach_line(p, buf, size, gm_foreach_line);
-}
-
-static int
 selector2uri(struct gm_selector *s, char *buf, size_t len)
 {
 	int	 r;
@@ -143,7 +134,7 @@ err:
 }
 
 static int
-gm_foreach_line(struct parser *p, const char *line, size_t linelen)
+gm_parse_line(struct parser *p, const char *line, size_t linelen)
 {
 	char buf[LINE_MAX] = {0};
 	struct gm_selector s = {0};
@@ -188,18 +179,6 @@ gm_foreach_line(struct parser *p, const char *line, si
 	return 1;
 }
 
-static int
-gm_free(struct parser *p)
-{
-	/* flush the buffer */
-	if (p->len != 0)
-		gm_foreach_line(p, p->buf, p->len);
-
-	free(p->buf);
-
-	return 1;
-}
-
 static inline const char *
 gopher_skip_selector(const char *path, int *ret_type)
 {
blob - 3f37bb628759061e405c7e346dc716cbb568629f
blob + 509eb9750e8073134721617555126699eb403f64
--- parser_textpatch.c
+++ parser_textpatch.c
@@ -26,10 +26,8 @@
 #include "parser.h"
 #include "utils.h"
 
-static int	tpatch_parse(struct parser *, const char *, size_t);
 static int	tpatch_emit_line(struct parser *, const char *, size_t);
-static int	tpatch_foreach_line(struct parser *, const char *, size_t);
-static int	tpatch_free(struct parser *);
+static int	tpatch_parse_line(struct parser *, const char *, size_t);
 
 void
 textpatch_initparser(struct parser *p)
@@ -37,8 +35,7 @@ textpatch_initparser(struct parser *p)
 	memset(p, 0, sizeof(*p));
 
 	p->name = "text/x-patch";
-	p->parse = &tpatch_parse;
-	p->free = &tpatch_free;
+	p->parseline = &tpatch_parse_line;
 
 	p->flags = PARSER_IN_PATCH_HDR;
 
@@ -46,12 +43,6 @@ textpatch_initparser(struct parser *p)
 }
 
 static int
-tpatch_parse(struct parser *p, const char *buf, size_t size)
-{
-	return parser_foreach_line(p, buf, size, tpatch_foreach_line);
-}
-
-static int
 tpatch_emit_line(struct parser *p, const char *line, size_t linelen)
 {
 	struct line *l;
@@ -107,15 +98,7 @@ tpatch_emit_line(struct parser *p, const char *line, s
 }
 
 static int
-tpatch_foreach_line(struct parser *p, const char *line, size_t linelen)
+tpatch_parse_line(struct parser *p, const char *line, size_t linelen)
 {
 	return tpatch_emit_line(p, line, linelen);
 }
-
-static int
-tpatch_free(struct parser *p)
-{
-	if (p->len != 0)
-		return tpatch_emit_line(p, p->buf, p->len);
-	return 1;
-}
blob - 5c873c362908fb136108098ac6e44f0796a1da91
blob + 5158068417703854a2dd0fd02b72d9aa20717937
--- parser_textplain.c
+++ parser_textplain.c
@@ -25,9 +25,7 @@
 
 #include "parser.h"
 
-static int	textplain_parse(struct parser*, const char*, size_t);
-static int	textplain_foreach_line(struct parser*, const char*, size_t);
-static int	textplain_free(struct parser*);
+static int	textplain_parse_line(struct parser*, const char*, size_t);
 
 static inline int
 emit_line(struct parser *p, const char *line, size_t len)
@@ -59,28 +57,13 @@ textplain_initparser(struct parser *p)
 	memset(p, 0, sizeof(*p));
 
 	p->name = "text/plain";
-	p->parse = &textplain_parse;
-	p->free = &textplain_free;
+	p->parseline = &textplain_parse_line;
 
 	TAILQ_INIT(&p->head);
 }
 
 static int
-textplain_parse(struct parser *p, const char *buf, size_t size)
+textplain_parse_line(struct parser *p, const char *line, size_t linelen)
 {
-	return parser_foreach_line(p, buf, size, textplain_foreach_line);
-}
-
-static int
-textplain_foreach_line(struct parser *p, const char *line, size_t linelen)
-{
 	return emit_line(p, line, linelen);
 }
-
-static int
-textplain_free(struct parser *p)
-{
-	if (p->len != 0)
-		return emit_line(p, p->buf, p->len);
-	return 1;
-}
blob - 0f01b1ef285be3e0ee68e7890b1ba4fcc4f923ed
blob + a099c7f70b13aef4d6ea62cf11276bf5f31af07d
--- telescope.h
+++ telescope.h
@@ -94,6 +94,7 @@ struct parser;
 typedef void	(*parserinit)(struct parser *);
 
 typedef int	(*parsechunkfn)(struct parser *, const char *, size_t);
+typedef int	(*parselinefn)(struct parser *, const char *, size_t);
 typedef int	(*parserfreefn)(struct parser *);
 typedef int	(*parserserial)(struct parser *, FILE *);
 
@@ -110,6 +111,7 @@ struct parser {
 	int		 flags;
 	parserinit	 init;
 	parsechunkfn	 parse;
+	parselinefn	 parseline;
 	parserfreefn	 free;
 	parserserial	 serialize;