From ea9682b12b2f563cbc92a795fe1818119d5c0240 Mon Sep 17 00:00:00 2001
From: cancel <cancel@cancel.fm>
Date: Tue, 18 Dec 2018 04:52:46 +0900
Subject: [PATCH] Add more file save as logic

---
 term_util.c | 49 +++++++++++++++++++++++++++++++++++++++++++++----
 term_util.h |  2 ++
 tui_main.c  | 10 ++++++++++
 3 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/term_util.c b/term_util.c
index db483c8..6947ba2 100644
--- a/term_util.c
+++ b/term_util.c
@@ -1,4 +1,5 @@
 #include "term_util.h"
+#include <ctype.h>
 #include <form.h>
 #include <menu.h>
 
@@ -26,15 +27,14 @@ void heapstr_reserve(Heapstr* hs, Usz capacity) {
 }
 void heapstr_set_cstrlen(Heapstr* hs, char const* cstr, Usz len) {
   heapstr_reserve(hs, len + 1);
-  memcpy(hs->str, cstr, len + 1);
+  memcpy(hs->str, cstr, len);
+  hs->str[len] = 0;
 }
 void heapstr_set_cstr(Heapstr* hs, char const* cstr) {
   Usz len = strlen(cstr);
   heapstr_set_cstrlen(hs, cstr, len);
 }
-Usz heapstr_len(Heapstr const* hs) {
-  return strlen(hs->str);
-}
+Usz heapstr_len(Heapstr const* hs) { return strlen(hs->str); }
 
 void term_util_init_colors() {
   if (has_colors()) {
@@ -416,9 +416,50 @@ bool qform_drive(Qform* qf, int key, Qform_action* out_action) {
   case CTRL_PLUS('h'):
     form_driver(qf->ncurses_form, REQ_DEL_PREV);
     return false;
+  case ' ':
+  case '\r':
+  case KEY_ENTER: {
+    out_action->any.type = Qform_action_type_submitted;
+    return true;
+  } break;
   default:
     form_driver(qf->ncurses_form, key);
     return false;
   }
   return false;
 }
+
+static Usz size_without_trailing_spaces(char const* str) {
+  Usz size = strlen(str);
+  for (;;) {
+    if (size == 0)
+      break;
+    if (!isspace(str[size - 1]))
+      break;
+    --size;
+  }
+  return size;
+}
+
+FIELD* qform_find_field(Qform const* qf, int id) {
+  Usz count = qf->fields_count;
+  for (Usz i = 0; i < count; ++i) {
+    FIELD* f = qf->ncurses_fields[i];
+    if ((int)(intptr_t)field_userptr(f) == id)
+      return f;
+  }
+  return NULL;
+}
+
+bool qform_get_text_line(Qform const* qf, int id, Heapstr* out) {
+  FIELD* f = qform_find_field(qf, id);
+  if (!f)
+    return false;
+  form_driver(qf->ncurses_form, REQ_VALIDATION);
+  char* buf = field_buffer(f, 0);
+  if (!buf)
+    return false;
+  Usz trimmed = size_without_trailing_spaces(buf);
+  heapstr_set_cstrlen(out, buf, trimmed);
+  return true;
+}
diff --git a/term_util.h b/term_util.h
index f2d883c..826f0fe 100644
--- a/term_util.h
+++ b/term_util.h
@@ -99,6 +99,7 @@ typedef struct Qform Qform;
 
 typedef enum {
   Qform_action_type_canceled,
+  Qform_action_type_submitted,
 } Qform_action_type;
 typedef struct {
   Qform_action_type type;
@@ -138,5 +139,6 @@ void qform_add_text_line(Qform* qf, int id, char const* initial);
 void qform_push_to_nav(Qform* qf);
 void qform_set_title(Qform* qf, char const* title);
 bool qform_drive(Qform* qf, int key, Qform_action* out_action);
+bool qform_get_text_line(Qform const* qf, int id, Heapstr* out);
 
 extern Qnav_stack qnav_stack;
diff --git a/tui_main.c b/tui_main.c
index 4c5a3d6..ec6a1fd 100644
--- a/tui_main.c
+++ b/tui_main.c
@@ -1982,6 +1982,16 @@ int main(int argc, char** argv) {
           case Qform_action_type_canceled:
             qnav_stack_pop();
             break;
+          case Qform_action_type_submitted: {
+            switch (qform_id(qf)) {
+            case Save_as_form_id: {
+              if (qform_get_text_line(qf, Save_as_name_id, &file_name)) {
+                fprintf(stderr, "new file name: %s\n", file_name.str);
+                ged_state.filename = file_name.str;
+              }
+            } break;
+            }
+          } break;
           }
         }
       } break;