MORE prompt

5 files changed, 20 insertions, 3 deletions

diff --git a/doc.c b/doc.c
index d41db7c..38b4802 100644
--- a/doc.c
+++ b/doc.c
@@ -71,6 +71,14 @@ struct doc_line *doc_line_at(struct doc *d, size_t ofs) {
 	return (struct doc_line *)&d->txt.buf[ofs];
 }
 
+int doc_line_nextp(struct doc *d, size_t ofs) {
+	return ofs + doc_line_at(d, ofs)->len + sizeof(struct doc_line) < d->txt.sz;
+}
+
+int doc_line_prevp(struct doc *d, size_t ofs) {
+	return ofs >= doc_line_at(d, ofs)->prev + sizeof(struct doc_line);
+}
+
 int doc_line_prev(struct doc *d, size_t *ofs) {
 	size_t n = doc_line_at(d, *ofs)->prev + sizeof(struct doc_line);
 	if (*ofs >= n) {
diff --git a/doc.h b/doc.h
index ab66272..132999e 100644
--- a/doc.h
+++ b/doc.h
@@ -32,6 +32,8 @@ void doc_add_text(struct doc *, const char *);
 void doc_add_textn(struct doc *, const char *, size_t);
 
 struct doc_line *doc_line_at(struct doc *d, size_t ofs);
+int doc_line_prevp(struct doc *d, size_t ofs);
+int doc_line_nextp(struct doc *d, size_t ofs);
 int doc_line_prev(struct doc *d, size_t *ofs);
 int doc_line_next(struct doc *d, size_t *ofs);
 
diff --git a/main.c b/main.c
index 3026e23..2150d57 100644
--- a/main.c
+++ b/main.c
@@ -74,8 +74,8 @@ void cmd_trim(char *buf, size_t max) {
 	}
 }
 
-int cmd_get(char *buf, size_t n) {
-	fputs("* ", stdout);
+int cmd_get(char *buf, size_t n, struct nav_state *ns) {
+	nav_prompt(ns);
 	return !!fgets(buf, n, stdin);
 }
 
@@ -88,7 +88,7 @@ int main(int argc, const char **argv) {
 	} else {
 		nav_redraw(&ns);
 	}
-	while (cmd_get(cmd_buf, sizeof cmd_buf)) {
+	while (cmd_get(cmd_buf, sizeof cmd_buf, &ns)) {
 		cmd_trim(cmd_buf, sizeof cmd_buf);
 		if (cmd_do(cmd_buf, &ns)) {
 			break;
diff --git a/nav.c b/nav.c
index 0a3e773..8456a76 100644
--- a/nav.c
+++ b/nav.c
@@ -129,3 +129,8 @@ int nav_link_nr(struct nav_state *ns, unsigned long link_nr) {
 	}
 	return 0;
 }
+
+void nav_prompt(struct nav_state *ns) {
+	int m = doc_line_nextp(&ns->histv[ns->cur_doc], ns->cur_ofs[ns->cur_doc]);
+	fputs(m ? "MORE* " : "* ", stdout);
+}
diff --git a/nav.h b/nav.h
index 0afcfaf..769096f 100644
--- a/nav.h
+++ b/nav.h
@@ -25,4 +25,6 @@ void nav_redraw(struct nav_state *ns);
 int nav_to(struct nav_state *ns, const char *url);
 int nav_link_nr(struct nav_state *ns, unsigned long link_nr);
 
+void nav_prompt(struct nav_state *ns);
+
 #endif