add pager

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/cstr/cstr.h b/lib/cstr/cstr.h
index 80dc359..ce27eb0 100644
--- a/lib/cstr/cstr.h
+++ b/lib/cstr/cstr.h
@@ -3,6 +3,11 @@
 
 #include "../sys/sizes.h"
 
+typedef struct {
+	char *begin;
+	char *end;
+} substr_t;
+
 u64        cstr_length(const char *);
 i8         cstr_compare(const char *a, const char *b);
 u64        cstr_split(char *cstr, char split);
@@ -10,6 +15,10 @@ const char *next_split(const char *previous);
 u64        strip_front(char *cstr, char strip);
 u64        strip_back(char *cstr, char strip);
 u64        strip_cstr(char *cstr, char strip);
+u64        number_of_lines(const char *cstr);
+
+substr_t   getline(const char *cstr, u64 n);
+substr_t   nextline(substr_t line);
 
 u64 cstr_utf8_length(const char *);
 u8  next_utf8(const char **);