lib/mp-readline: Export readline_push_history function.

dpgeorge · dpgeorge · commit 2acfb7c00225 · 2015-05-27T15:06:17.000+01:00
diff --git a/lib/mp-readline/readline.c b/lib/mp-readline/readline.c
@@ -81,18 +81,18 @@ STATIC void erase_line_from_cursor(void) {
 
 typedef struct _readline_t {
     vstr_t *line;
-    int orig_line_len;
+    size_t orig_line_len;
     int escape_seq;
     int hist_cur;
-    int cursor_pos;
+    size_t cursor_pos;
     char escape_seq_buf[1];
     const char *prompt;
 } readline_t;
 
 STATIC readline_t rl;
 
 int readline_process_char(int c) {
-    int last_line_len = rl.line->len;
+    size_t last_line_len = rl.line->len;
     int redraw_step_back = 0;
     bool redraw_from_cursor = false;
     int redraw_step_forward = 0;
@@ -112,17 +112,7 @@ int readline_process_char(int c) {
         } else if (c == '\r') {
             // newline
             mp_hal_stdout_tx_str("\r\n");
-            if (rl.line->len > rl.orig_line_len && (MP_STATE_PORT(readline_hist)[0] == NULL || strcmp(MP_STATE_PORT(readline_hist)[0], rl.line->buf + rl.orig_line_len) != 0)) {
-                // a line which is not empty and different from the last one
-                // so update the history
-                char *most_recent_hist = str_dup_maybe(vstr_null_terminated_str(rl.line) + rl.orig_line_len);
-                if (most_recent_hist != NULL) {
-                    for (int i = READLINE_HIST_SIZE - 1; i > 0; i--) {
-                        MP_STATE_PORT(readline_hist)[i] = MP_STATE_PORT(readline_hist)[i - 1];
-                    }
-                    MP_STATE_PORT(readline_hist)[0] = most_recent_hist;
-                }
-            }
+            readline_push_history(vstr_null_terminated_str(rl.line) + rl.orig_line_len);
             return 0;
         } else if (c == 27) {
             // escape sequence
@@ -149,7 +139,7 @@ int readline_process_char(int c) {
                 redraw_from_cursor = true;
             } else {
                 // one match
-                for (int i = 0; i < compl_len; ++i) {
+                for (mp_uint_t i = 0; i < compl_len; ++i) {
                     vstr_ins_byte(rl.line, rl.cursor_pos + i, *compl_str++);
                 }
                 // set redraw parameters
@@ -184,7 +174,7 @@ int readline_process_char(int c) {
             rl.escape_seq = ESEQ_NONE;
             if (c == 'A') {
                 // up arrow
-                if (rl.hist_cur + 1 < READLINE_HIST_SIZE && MP_STATE_PORT(readline_hist)[rl.hist_cur + 1] != NULL) {
+                if (rl.hist_cur + 1 < (int)READLINE_HIST_SIZE && MP_STATE_PORT(readline_hist)[rl.hist_cur + 1] != NULL) {
                     // increase hist num
                     rl.hist_cur += 1;
                     // set line to history
@@ -312,3 +302,19 @@ int readline(vstr_t *line, const char *prompt) {
         }
     }
 }
+
+void readline_push_history(const char *line) {
+    if (line[0] != '\0'
+        && (MP_STATE_PORT(readline_hist)[0] == NULL
+            || strcmp(MP_STATE_PORT(readline_hist)[0], line) != 0)) {
+        // a line which is not empty and different from the last one
+        // so update the history
+        char *most_recent_hist = str_dup_maybe(line);
+        if (most_recent_hist != NULL) {
+            for (int i = READLINE_HIST_SIZE - 1; i > 0; i--) {
+                MP_STATE_PORT(readline_hist)[i] = MP_STATE_PORT(readline_hist)[i - 1];
+            }
+            MP_STATE_PORT(readline_hist)[0] = most_recent_hist;
+        }
+    }
+}
diff --git a/lib/mp-readline/readline.h b/lib/mp-readline/readline.h
@@ -32,6 +32,7 @@
 
 void readline_init0(void);
 int readline(vstr_t *line, const char *prompt);
+void readline_push_history(const char *line);
 
 void readline_init(vstr_t *line, const char *prompt);
 void readline_note_newline(const char *prompt);
