Add support for read_history(char *filename) and write_history(char *filename)

examples/cli.c

@@ -22,6 +22,8 @@
 #include "editline.h"
 #include <string.h>
 
+#define HISTORY "/tmp/.cli-history"
+
 static char *list[] = {
    "foo ", "bar ", "bsd ", "cli ", "ls ", "cd ", "malloc ", "tee ", NULL
 };
@@ -86,11 +88,14 @@ int main(int ac __attribute__ ((unused)), char *av[] __attribute__ ((unused)))
    /* Setup callbacks */
    rl_set_complete_func(&my_rl_complete);
    rl_set_list_possib_func(&my_rl_list_possib);
+   read_history(HISTORY);
 
    while ((line = readline(prompt)) != NULL) {
       printf("\t\t\t|%s|\n", line);
       free(line);
    }
 
+   write_history(HISTORY);
+
    return 0;
 }

include/editline.h

@@ -56,4 +56,7 @@ extern void rl_reset_terminal(char *p);
 extern char *readline(const char *prompt);
 extern void add_history(const char *line);
 
+extern int read_history(const char *filename);
+extern int write_history(const char *filename);
+
 #endif  /* __EDITLINE_H__ */

src/editline.c

@@ -1155,6 +1155,50 @@ void add_history(const char *p)
 
     hist_add(p);
 }
+
+
+int read_history(const char *filename)
+{
+    FILE *fp;
+    char buf[SCREEN_INC];
+
+    hist_alloc();
+    fp = fopen(filename, "r");
+    if (fp) {
+	H.Size = 0;
+	while (H.Size < el_hist_size) {
+	    if (!fgets(buf, SCREEN_INC, fp))
+		break;
+	    buf[strlen(buf) - 1] = 0; /* Remove '\n' */
+	    add_history(buf);
+	}
+	fclose(fp);
+
+	return 0;
+    }
+
+    return errno;
+}
+
+int write_history(const char *filename)
+{
+    FILE *fp;
+
+    hist_alloc();
+    fp = fopen(filename, "w");
+    if (fp) {
+	int i = 0;
+
+	while (i < H.Size) {
+	    fprintf(fp, "%s\n", H.Lines[i++]);
+	}
+	fclose(fp);
+
+	return 0;
+    }
+
+    return errno;
+}
 
 
 /*