From 91d92e342a042f1c1480f68cb321010c7ecba91e Mon Sep 17 00:00:00 2001
From: Raffaele Sena <raff367@gmail.com>
Date: Wed, 28 Sep 2022 17:45:44 -0700
Subject: [PATCH] Added --readonly flag (see
 https://github.com/pixel/hexedit/issues/59)

---
 file.c    | 2 +-
 hexedit.c | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/file.c b/file.c
index 000a962..77901cb 100644
--- a/file.c
+++ b/file.c
@@ -26,7 +26,7 @@ void openFile(void)
   }
 
   /* edited should be cleaned here (assert(edited == NULL)) */
-  if ((fd = open(fileName, O_RDWR)) == -1) {
+  if (isReadOnly || (fd = open(fileName, O_RDWR)) == -1) {
     isReadOnly = TRUE;
     if ((fd = open(fileName, O_RDONLY)) == -1) {
       if (page) exitCurses();
diff --git a/hexedit.c b/hexedit.c
index 6ab2ed7..c00515d 100644
--- a/hexedit.c
+++ b/hexedit.c
@@ -25,7 +25,7 @@ INT mark_min, mark_max, mark_set;
 INT base, oldbase;
 int normalSpaces, cursor, cursorOffset, hexOrAscii;
 int cursor, blocSize, lineLength, colsUsed, page;
-int isReadOnly, fd, nbBytes, oldcursor, oldattr, oldcursorOffset;
+int fd, nbBytes, oldcursor, oldattr, oldcursorOffset;
 int sizeCopyBuffer, *bufferAttr;
 char *progName, *fileName, *baseName;
 unsigned char *buffer, *copyBuffer;
@@ -40,8 +40,9 @@ const modeParams modes[LAST] = {
 };
 modeType mode = maximized;
 int colored = FALSE;
+int isReadOnly = FALSE;
 
-const char * const usage = "usage: %s [-s | --sector] [-m | --maximize] [-l<n> | --linelength <n>]"
+const char * const usage = "usage: %s [-s | --sector] [-m | --maximize] [-l<n> | --linelength <n>] [-r | --readonly]"
 #ifdef HAVE_COLORS 
      " [--color]"
 #endif 
@@ -60,6 +61,8 @@ int main(int argc, char **argv)
     {
       if (streq(*argv, "-s") || streq(*argv, "--sector"))
 	mode = bySector;
+      else if (streq(*argv, "-r") || streq(*argv, "--readonly"))
+	isReadOnly = TRUE;
       else if (streq(*argv, "-m") || streq(*argv, "--maximize")) {
 	mode = maximized;
 	lineLength = 0;