- General: - Preliminary prepend code. This may be a bad idea, but I've been wanting it for awhile now and we'll see how bad it messes everything up. Changes to files.c:do_writeout(), write_file()

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1188 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -8,6 +8,9 @@ CVS code -
 	  New functions nano.c:make_new_opennode(), free_openfilestruct(), 
 	  delete_opennode(), unlink_opennode(), splice_opennode(),  
 	  new struct openfilestruct in nano.h. 
+	- Preliminary prepend code.  This may be a bad idea, but I've
+	  been wanting it for awhile now and we'll see how bad it messes
+	  everything up.  Changes to files.c:do_writeout(), write_file().
 - configure.ac:
 	- Define NDEBUG to silence asserts (David Benbennick).
 - files.c:

files.c

@@ -1178,8 +1178,8 @@ int check_operating_dir(char *currpath, int allow_tabcomp)
  * tmp means we are writing a tmp file in a secure fashion.  We use
  * it when spell checking or dumping the file on an error.
  *
- * append means, not surprisingly, whether we are appending instead
+ * append == 1 means we are appending instead of overwriting.
- * of overwriting.
+ * append == 2 means we are prepending instead of overwriting.
  *
  * nonamechange means don't change the current filename, it is ignored
  * if tmp == 1.
@@ -1187,9 +1187,9 @@ int check_operating_dir(char *currpath, int allow_tabcomp)
 int write_file(char *name, int tmp, int append, int nonamechange)
 {
     long size, lineswritten = 0;
-    char *buf = NULL;
+    char *buf = NULL, prechar;
     filestruct *fileptr;
-    int fd, mask = 0, realexists, anyexists;
+    int fd, fd2, mask = 0, realexists, anyexists;
     struct stat st, lst;
     char *realname = NULL;
 
@@ -1238,7 +1238,8 @@ int write_file(char *name, int tmp, int append, int nonamechange)
 		if (realexists == -1 || tmp || (!ISSET(FOLLOW_SYMLINKS) &&
 		S_ISLNK(lst.st_mode))) {
        to reflect whether or not to link/unlink/rename the file */
-    else if (ISSET(FOLLOW_SYMLINKS) || !S_ISLNK(lst.st_mode) || tmp) {
+    else if (append != 2 && (ISSET(FOLLOW_SYMLINKS) || !S_ISLNK(lst.st_mode) 
+		|| tmp)) {
 	/* Use O_EXCL if tmp == 1.  This is now copied from joe, because
 	   wiggy says so *shrug*. */
 	if (append)
@@ -1343,6 +1344,26 @@ int write_file(char *name, int tmp, int append, int nonamechange)
 	return -1;
     }
 
+    /* if we're prepending, open the real file, and append it here */
+    if (append == 2) {
+	if ((fd = open(buf, O_WRONLY | O_APPEND, (S_IRUSR|S_IWUSR))) == -1) {
+	    statusbar(_("Could not reopen %s: %s"), buf, strerror(errno));
+	    return -1;
+	}
+	if ((fd2 = open(realname, O_RDONLY)) == -1) {
+	    statusbar(_("Could open %s for prepend: %s"), realname, strerror(errno));
+	    return -1;
+	}
+
+	while (read(fd2, &prechar, 1) > 0)
+	    write(fd, &prechar, 1);
+
+	close(fd);
+	close(fd2);
+
+    }
+
+
     if (realexists == -1 || tmp ||
 	(!ISSET(FOLLOW_SYMLINKS) && S_ISLNK(lst.st_mode))) {
 
@@ -1358,7 +1379,8 @@ int write_file(char *name, int tmp, int append, int nonamechange)
 	/* Use permissions from file we are overwriting. */
 	mask = st.st_mode;
 
-    if (!tmp && (!ISSET(FOLLOW_SYMLINKS) && S_ISLNK(lst.st_mode))) {
+    if (append == 2 || 
+		(!tmp && (!ISSET(FOLLOW_SYMLINKS) && S_ISLNK(lst.st_mode)))) {
 	if (unlink(realname) == -1) {
 	    if (errno != ENOENT) {
 		statusbar(_("Could not open %s for writing: %s"),
@@ -1438,7 +1460,10 @@ int do_writeout(char *path, int exiting, int append)
 
 	/* Be nice to the translation folks */
 	if (ISSET(MARK_ISSET) && !exiting) {
-	    if (append)
+	    if (append == 2)
+		i = statusq(1, writefile_list, "",
+		    "%s%s", _("Prepend Selection to File"), formatstr);
+	    else if (append)
 		i = statusq(1, writefile_list, "",
 		    "%s%s", _("Append Selection to File"), formatstr);
 	    else
@@ -1447,7 +1472,10 @@ int do_writeout(char *path, int exiting, int append)
 	} else
 #endif
 	{
-	    if (append)
+	    if (append == 2)
+		i = statusq(1, writefile_list, answer,
+		    "%s%s", _("File Name to Prepend"), formatstr);
+	    else if (append)
 		i = statusq(1, writefile_list, answer,
 		    "%s%s", _("File Name to Append"), formatstr);
 	    else
@@ -1481,8 +1509,12 @@ int do_writeout(char *path, int exiting, int append)
 	    UNSET(DOS_FILE);
 	    TOGGLE(MAC_FILE);
 	    return(do_writeout(answer, exiting, append));
-	} else if (i == NANO_APPEND_KEY)
+	} else if (i == NANO_PREPEND_KEY)
-	    return(do_writeout(answer, exiting, 1 - append));
+	    return(do_writeout(answer, exiting, 2));
+	else if (i == NANO_APPEND_KEY && append != 1)
+	    return(do_writeout(answer, exiting, 1));
+	else if (i == NANO_APPEND_KEY)
+	    return(do_writeout(answer, exiting, 0));
 
 #ifdef DEBUG
 	    fprintf(stderr, _("filename is %s"), answer);

global.c

@@ -272,7 +272,7 @@ void shortcut_init(int unjustify)
 	"", *nano_backspace_msg = "", *nano_tab_msg =
 	"", *nano_enter_msg = "", *nano_cancel_msg = 
 	"", *nano_unjustify_msg = "", *nano_append_msg =
-	""; 
+	"", *nano_prepend_msg = ""; 
 
 #ifdef ENABLE_MULTIBUFFER
     char *nano_openprev_msg = "", *nano_opennext_msg = "";
@@ -330,6 +330,7 @@ void shortcut_init(int unjustify)
     nano_gotodir_msg = _("Goto Directory");
     nano_cancel_msg = _("Cancel the current function");
     nano_append_msg = _("Append to the current file");
+    nano_prepend_msg = _("Prepend to the current file");
     nano_reverse_msg = _("Search backwards");
     nano_dos_msg = _("Write file out in DOS format");
     nano_mac_msg = _("Write file out in Mac format");
@@ -632,6 +633,10 @@ void shortcut_init(int unjustify)
 		NANO_APPEND_KEY, _("Append"),
 		nano_append_msg, 0, 0, 0, NOVIEW, 0);
 
+    sc_init_one(&writefile_list, 
+		NANO_PREPEND_KEY, _("Prepend"),
+		nano_prepend_msg, 0, 0, 0, NOVIEW, 0);
+
     sc_init_one(&writefile_list, NANO_CANCEL_KEY, 
 		_("Cancel"), nano_cancel_msg, 0, 0, 0, VIEW, 0);
 

nano.h

@@ -289,6 +289,7 @@ know what you're doing */
 #define NANO_FROMSEARCHTOGOTO_KEY NANO_CONTROL_T
 #define NANO_TOFILES_KEY	NANO_CONTROL_T
 #define NANO_APPEND_KEY		NANO_ALT_A
+#define NANO_PREPEND_KEY	NANO_ALT_P
 #define NANO_OPENPREV_KEY	NANO_ALT_LCARAT
 #define NANO_OPENNEXT_KEY	NANO_ALT_RCARAT
 #define NANO_OPENPREV_ALTKEY	NANO_ALT_COMMA